巴西专利BR112012025163B1 bone fixation systems

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专利摘要:
Invention Patent for BONE FIXATION SYSTEMS. A bone fixation system that can be configured to move at least one of a first bone segment and a second bone segment relative to another, as disclosed. The system can include a first lever and a second lever pivotally coupled to the first lever. The first lever can include a first handle, a first jaw extending through the first handle, and an opening extending through the first jaw. The opening will be configured to receive a fastening element there, fixedly couples the first lever to the bone plate. The second lever can include a second handle, a second jaw extending from the handle, and an opening extending through the second jaw. The opening can be configured to temporarily receive a fastener to operatively couple a second lever to the second bone segment.
公开号:BR112012025163B1
申请号:R112012025163-5
申请日:2011-04-27
公开日:2020-10-27
发明作者:Alfred Neideberger；Johann Fierlbeck；Alexander Hatt；Guido Hertig
申请人:Synthes Gmbh；
IPC主号:

专利说明:

CROSS REFERENCE TO RELATED ORDERS
This order claims the benefit of US Provisional Serial Order No. 61 / 328,347 filed on April 27, 2010, and US Provisional Serial Order No. 61 / 328,381 filed on April 27, 2010, the contents of which are incorporated here for reference in its entirety. BACKGROUND
In order to restore the correct position of a first and a second bone segment of a fractured bone, it is often desired to close or reduce the gap between the two bone segments. Similarly, in the case of arthrodesis, where two separate bones have to be fused, an opening has to be closed. Surgical compression forceps are commonly used to move bone segments towards each other. After reducing the fractured bone, a bone plate is attached to the bone segments to hold the bone segments in place.
Because the bone plate is attached to the bone segments in the same region as the compression forceps are attached to the bone segments, it is often difficult to retain the reduced bone segments in position as the compression forceps and bone implant interfere. with each other. SUMMARY
In one embodiment, a bone fixation system can be configured to move at least one first segment and a second segment relative to the other. The first and second segments can be separated by an opening in the bone. The system can include a first lever and a second lever pivotally coupled to the first lever. The first lever may include a first handle, a first jaw extending from the first handle, and an opening extending through the first jaw. The opening can be configured to receive a fastening element attached thereon the first lever to a bone plate. The second lever can include a handle, a second jaw extending from the second handle, and an opening extending through the second jaw. The opening can be configured to receive a temporary fixation element to operatively couple the second lever to the second bone segment so that in use, the bone fixation element is able to transform relative to the bone plate in a way that allows reduction of the first and second segments.
The forceps can be welded as part of a set. The assembly may include at least one bone fixation plate having a first body part and a second body part. The first body part can define at least two openings. The first opening of at least two openings is configured to receive a bone anchor to fix the bone fixation plate there to the first bone segment there. A second opening of at least one of the two openings may include a coupler configured to loosely couple the bone fixation plate to the forceps. A second body part can define at least two openings. The first opening of at least two openings can be configured to receive a bone anchor to affix the bone fixation plate to the second segment there. The second opening of at least two openings can include a groove having a lateral dimension and a longitudinal dimension that is larger than the lateral dimension. The groove can be configured to receive a temporary bone fastener so that the temporary bone fastener is longitudinally transformed with the groove.
Also disclosed is a method of attaching a bone plate having a first body part and a second body part to a first and second bone segments. The first and second bone segments can be arranged in a position relative to each other and can be separated by a bone opening. According to the method, a bone plate can be aligned with the first and second bone segments so that the first plurality of openings extending through the first bone part of the bone plate are aligned with the first bone segment and a second plurality of openings extending through the second body part of a bone plate are aligned with the second bone alignment. A forceps having a first and a second jaw can be attached to the bone plate both after and before the bone plate is aligned, by inserting a fixation element through the first jaw and into the first opening of the plurality of openings extending through the first body part of the bone plate. The first body part of a bone plate can be attached to a first bone segment with a bone anchor. The temporary fixation element can be coupled to a second segment of bone so that the temporary fixation element extends through the second forceps jaw and through an opening of the second plurality of openings that extend through the second part of the body. bone plate. By the actuation of the forces, at least one temporary fixation element is biased so that a relative translation to the bone plate, thus adjusting the relative positions of the first and second bone segments in relation to each other. BRIEF DESCRIPTION OF THE DRAWINGS
The above mentioned summary, as well as the following detailed description of the application's preferred modalities, will be better understood when read in conjunction with the attached drawings. In order to illustrate the forceps and bone plates of this application, it has been shown in the drawings of the preferred modalities. It must be understood, therefore, that the application is not limited to the precise systems and methods shown. In the drawings:
Figure 1 is a perspective view of a bone fixation system built according to one embodiment and operatively coupled to a pair of bone segments illustrated schematically separated by a bone opening, the bone fixation system including a plate bone fixation, a forceps fixedly attached to a bone plate with a fixation element, and a temporary fixation element that extends through both forceps and bone plate;
Figure 2A is a perspective view of a bone fixation plate illustrated in figure 1, the bone fixation plate includes a plurality of openings, two of the openings are configured to receive the bone anchors, an opening is configured for receiving a fixation element so that the forceps are fixedly attached to the bone fixation plate, and an opening defines a groove and is configured to receive a temporary fixation element;
Figure 2B is a top plan view of a bone fixation plate shown in Figure 2A;
Figure 3A is a perspective view of a constructed bone fixation plate similar to the bone plate illustrated in figure 2A, but according to another embodiment;
Figure 3B is a top plan view of a bone fixation plate shown in Figure 3A;
Figure 4A is an expanded view of the forceps shown in Figure 1, the forceps including a first lever and a second lever hingedly coupled to the first lever, the first and second lever each having a handle, and a jaw extending from the handle, the first jaw of the first lever including an opening configured to receive a bone anchor, and an opening configured to receive the bone fixation element so that it securely couples the first jaw to the bone fixation plate, and the second jaw the second lever including an opening configured to receive a bone fixation element so that the temporary fixation element extends through the opening and into the groove of the bone fixation plate;
Figure 4B is a top perspective view of the first and second jaws of the lever shown in figure 4A positioned on the bone fixation plate shown in figure 2A, the first opening of the first jaw receiving a fixation element so that it attaches securely the first mandible the bone fixation plate, and the opening of the second mandible receiving a temporary fixation element;
Figure 4C is a bottom perspective view of the first and second jaws shown in figure 4B;
Figure 4D is a bottom plan view of the first mandible fixedly attached to the bone fixation plate, which is shown in dashed lines;
Figure 4E is a sectional side elevation view of the first and second jaws through lines 4E-4E shown in figure 4D;
Figure 4F is a sectional elevation view of the first mandible through line 4F-4F shown in figure 4D;
Figure 5A is a perspective view of a bone fixation system shown in Figure 1 with the first jaw attached to a bone fixation plate by a fixation element, the bone fixation plate positioned against the first and the second bone segments that define a bone opening;
Figure 5B is a perspective view of a first bone anchor being inserted through one of the openings defined by the first deforming jaw that fixes the bone fixation plate to the first bone segment;
Figure 5C is a perspective view of the bone fixation plate attached to the first bone segment with a first bone anchor;
Figure 5D is a perspective view of the bone fixation system shown in Figure 5C, with the second jaw positioned on the bone fixation plate so that the opening of the second jaw is aligned with the groove in the bone fixation plate. ;
Figure 5E is a perspective view of a bone fixation system shown in Figure 5D, with a temporary fixation element extending through the opening of the second jaw and through the groove of the bone fixation plate so that it engages the second mandible to the second bone segment;
Figure 5F is a perspective view of the bone fixation system shown in Figure 5E, after the forceps have been compressed and the first and second bone segments have been transformed in order to reduce the opening of the bone;
Figure 5G is a perspective view of a bone fixation system shown in Figure 5F, after the second bone anchor has affixed the bone fixation plate to the second bone segment;
Figure 5H is a perspective view of the bone fixation plate affixed to the first and second segments, after the forceps and bone fixation element have been removed;
Figure 6 is an expanded view of the bone fixation system according to another embodiment, the bone fixation system including a forceps having a first mandible and a second mandible, a fixation element configured to fix the first mandible of the bone. forceps to the bone fixation plate, and a pair of temporary fixation elements configured to operatively couple the first and second forceps jaws to the first and second bone segments;
Figure 7A is a perspective view of the bone fixation plate constructed according to another embodiment, the bone fixation plate having a plurality of openings, two of these openings configured to receive the bone anchors, one of the openings configured for receiving a bone fixation element so that the forceps are fixedly attached to the bone fixation plate, and one of the openings defines a groove and is configured to receive one of the temporary fixation elements;
Figure 7B is a top plan view of the bone fixation plate shown in Figure 7A;
Figure 8A is a perspective view of the forceps shown in Figure 6 attached firmly to the bone fixation plate shown in Figure 7A with a fixation element, the bone fixation plate positioned against the first and second bone segments that are separated through an opening;
Figure 8B is a perspective view of the first temporary fixation element extending through the fixation element and within the first bone segment so that it engages the first jaw with the first bone segment;
Figure 8C is a perspective view of the second temporary fixation element extending through both the second jaw, and the groove, and then within the second bone segment so that it engages the second jaw with the second bone segment;
Figure 8D is a perspective view of the bone fixation system shown in Figure 8C, after the forceps have been compressed and the first and second bone segments have been transformed in order to reduce the bone gap; and
Figure 8E is a perspective view of the bone fixation system shown in Figure 8E, after the first and second bone anchors have affixed the bone fixation plate to the first and second bone segments. DETAILED DESCRIPTION
Referring to figure 1, a bone fixation system 10 includes a bone fixation plate 14, a temporary fixation element illustrated as a K-wire 26, and a forceps 18. The bone fixation plate 14 can be operatively coupled to an underlying bone 30 having bone segments 30a and 30b that are separated by a bone opening 34. The bone fixation system 10 further includes a plurality of (example, at least two) bone fixation elements or bone anchors 38 that hold the bone fixation plate 14 to the underlying bone 30 on opposite sides of the bone opening 34. Bone anchors 38 are illustrated as bone screws, whereby any anchor of bone capable of affixing the bone fixation plate 14 to the underlying bone 30 can be used. Forceps 18 are configured to be operatively coupled between the bone fixation plate 14 and the K-wire 26 in a way that approximates the bone opening 34 during operation. For example, forceps 18 may include a pair of jaws 204 and 212 and a fixation element 22 which is configured to couple tightly between bone fixation plate 14 and one of jaws 204 and 212. The other of jaws 204 and 212 can be fixedly coupled to the K-wire 26 which extends through an elongated K-wire groove 114 (see figure 2A) of the bone fixation plate 14 and within the corresponding bone segment 30b. One of the bone anchors 38 can couple a bone fixation plate 14 to the opposite bone segment 30a. Therefore, forceps 18 are configured to compress jaws 204 and 212 towards each other in order to apply a polarizing force to at least one or both corresponding fastening elements and K-wire, thus causing at least one bone fixation element 22 and K-wire 26 travel towards each other in a way that approximates the bone opening 34. The bone opening 34 can be a fracture created by a traumatic event, an osteotomy, or it may be the result debridement of a joint of two distinct bones to be joined in an arthrodesis.
The bone fixation plate 14 is placed against or in proximity to the underlying bone 30 and is fixedly attached to forceps 18. The first bone anchor 38a can affix the bone fixation plate 14 to the first bone segment 30a. The K-wire 26 can then be inserted through forceps 18, through the bone fixation plate 14, and into the second bone segment 30b. By applying force to forceps 18 at least one or both of the bone segments 30a and 30b can be transformed, thereby adjusting the relative positions of the bone segments 30a and 30b with respect to each other. For example, forceps 18 can apply a compressive force that brings at least one or both bone segments 30a and 30b towards each other, thereby reducing the bone gap 34 to promote the joining of bone segments 30a and 30b. It should be understood that forceps 18 can also provide a distancing force in order to urge one or both bone segments 30a and 30b apart from one another, thus distancing the bone opening 34. The bone fixation plate 14 can be configured geometrically for attachment to bone 30, which can be a forefoot, midfoot, hindfoot, distal tibia, or any bone in the human body as desired, both in vivo and ex vivo. The bone fixation plate 14 can alternatively be affixed in the manner described above to any bone in the body of a compatible non-human animal, in vivo or ex vivo.
The bone fixation system 10 and the components of the bone fixation system 10 can be made from any compatible biocompatible material, such as titanium, including titanium alloys, stainless steel, ceramics, or polymers such as a polyetheretherketone (PEEK ), chromium-cobalt molybdenum (CoCrMo) with a porous coating of pulverized plasma titanium, or any alternative material compatible as desired.
Referring now to Figures 2A and 2B, the bone fixation plate 14 can be made in different shapes and sizes for use in a wide variety of clinical applications. The bone fixation plate 14 is elongated along a longitudinal direction L, defines a width along a lateral direction A that is perpendicular or substantially perpendicular to the longitudinal direction L, and a thickness along the transverse direction T that is perpendicular or substantially perpendicular to both longitudinal direction L and lateral direction A. In this regard, it should be appreciated that the various directions may extend along directions that are 90 ° angularly displaced from each other, or anywhere with an average of approximately 45 ° and approximately 90 ° angularly offset from each other.
The bone fixation plate 14 includes a bone plate body 40 that extends substantially along a central longitudinal axis 42, and defines a proximal end 44 and a distal end 48 opposite the proximal end 44 along the longitudinal axis 42 The body of the plate 40 further defines an inner surface 52 facing a bone and an opposite outer surface 56 spaced from the inner surface 52 along the transverse direction T. The body of the plate 40 further defines opposite side surfaces 58 and 60 that are spaced one the other along a lateral direction A.
As shown in figures 2A and 2B, the body of plate 40 includes a first body part 64 and a second adjacent body part 68. The first and second body parts 64 and 68 can be integrally formed (i.e., a single limb) and can be configured to contour the underlying bone 30. In particular, the bone fixation plate 14 is configured to encompass the bone opening 34 so that the first body part 64 at least partially outlines the first bone segment 30a and the second body part at least partially outline the second bone segment 30b.
With continuous reference to figures 2A-2B, the bone plate 14 defines a plurality of openings 72 that extend transversely across the body of the plate 40, from the inner surface facing the bone 52 through the outer surface 56. In particular, the first part body 72 of the plate body 40 defines at least two openings 72, and the second body part 68 of the plate body 40 defines at least two openings 72. In the illustrated embodiment, the first body part 64 defines three openings 72 and the second body part 68 defines two openings 72, although it should be understood that any number of openings 72 can extend through the first and second body parts 64 and 68.
As shown, the first body part 64 of the bone fixation plate 14 includes a first or bone anchor opening 76 that is configured to receive a bone anchor 38, and a second fixture receiving an opening 80 that is configured to receive a bone fixation element 22. The first opening 76 extends through the bone fixation plate 14 and is configured to receive the bone anchor 38 so that it attaches the first body part 64 of the bone fixation plate 14 to the first bone segment 30a. The first opening 76 is positioned between the proximal end 44 and the second opening 80. The first opening 76 can include a tapered inner thread that screws towards the inner surface facing bone 52. The first screw opening 76 can prevent the anchor from bone 38 comes out after bone anchor 38 has affixed bone fixation plate 14 to the first bone segment 30a.
As shown in figures 2A and 2B, the second opening 80 also extends through the bone fixation plate 14 and includes a coupler 84 that is configured to be fitted by the fixation element 22 so that it securely couples the forceps 18 to the compression plate. bone fixation 14. In the illustrated embodiment, coupler 84 includes internal threads 88 which are configured to be fitted by external threads 318 defined by the fastening element 22 (see example in figure 4B). It should be understood, however, that the coupler 84 can include a structure other than the internal threads 88. For example, the coupler 84 can define a pressure on the assembly. Furthermore, while the bone fixation element 22 is illustrated as a pin, it should be understood that the fixation element 22 can be any structure capable of securely coupling forceps 18 to the bone fixation plate 14.
As shown, the second opening 80 and the third opening 102 are displaced and aligned in the lateral direction A on the opposite sides of the central axis 42. Both openings 80 and 102 are located distally from the first opening 76, but extends through the first part of the body 64 of the bone fixation plate 14.
As shown, the second body part 68 of the bone fixation plate 14 includes a first or a bone anchor opening 106 that is configured to receive a bone anchor 38, and a second opening 110 that is configured to receive the wire -K 26. The first opening 106 extends through the bone fixation plate 14 and is configured to receive the bone anchor 38 so that it affixes the second body part 68 of the bone fixation plate 14 to the second bone segment 30b. the bone anchor opening 106 is positioned between the distal end 48 and the second opening 110. The first opening 106 may include a tapered inner thread that screws towards the inner surface facing bone 52. The first screw opening 106 can help to preventing the bone anchor 38 from coming out after the bone anchor 38 has affixed the bone fixation plate 14 to the second bone segment 30b.
As shown in figures 2A and 2B, the second opening 110 also extends through the bone fixing plate 14 and defines a K-wire groove 114 which is configured to receive a K-26 wire so that the K-26 wire it may fit or otherwise extend into the second bone segment 30b. As shown in Figure 2B, the K-wire groove 114 has a lateral width Ws and a longitudinal length Ls that is substantially greater than the lateral width Ws. The lateral width Ws of the K-wire groove 114 can be substantially equal to the diameter of the K-wire 26 so as to prevent misalignment of the bone fixation plate 14 during compression of the bone segments, while at the same time allowing the K-wire 26 turns into groove 114 along the longitudinal direction L The longitudinal length Ls of the K-wire groove 114 can be a length that allows K-wire 26 and thus the second bone segment 30b to turn in direction of the first bone segment 30a under forceps compression 18. It should be understood, however, that the second opening 110 can have any desired dimension. For example, the second opening 110 may be a K-wire groove having a lateral width that is greater than the diameter of the K-wire or the second opening 110 may have dimensions that receive another structure as long as the structure is able to transform into the opening.
As shown in figures 2A and 2B, the second opening 80 of the first body part 64 and the second opening 110 of the second body part 68 are spaced from each other along a longitudinal direction L by a width WB. The second openings 80 and 110 are separated so that a solid piece of the bone plate body 40 is disposed between the two openings.
Referring to Figures 3A and 3B, an alternately constructed bone fixation plate 120 includes a bone plate body 124 that defines a first body part 128 and a second body part 132. The body of the bone plate 124 is still defines a pair of laterally opposed widened regions 136a extending distally and laterally outwardly from a proximal end 140 of the first body part 128, and a second pair of laterally opposed widened regions 136b extending proximally and laterally outwardly to from a distal end 144 of the second body part 132. The first and second body parts 128 and 132, and the first and second enlarged regions 136a and 136b transmit a substantial X shape to the bone plate body 124.
Similar to the bone fixation plate 14, the bone fixation plate 120 includes a plurality of openings that extend through the body of the bone plate 124. In particular. The first body part 128 includes an opening 150 which is configured to receive a fastener in order to securely couple the forceps 18 to the bone fixation plate 120, and the second body part 132 includes an opening 154 that defines a groove K-wire 158 and is configured to receive K-wire 26. As shown, opening 150 includes a coupler 162, which in the illustrated embodiment is an internal thread that allows the bone fixation plate 120 to be fixedly attached to the forceps 18. To affix the bone fixation plate 120 to the underlying bone each enlarged region 136a and 136b defines a respective bone anchor opening 166 which is configured to receive a respective bone anchor.
Also similar to the bone fixation plate 14, the first body part 128 of the bone fixation plate 120 can further include a positioning element 170 which is configured to be engaged by a positioning element defined by the forceps 18 in order to align forceps 18 and bone fixation plate 120 with the defined position and to prevent rotation of bone fixation plate 120 relative to forceps 18. As shown, the positioning element 170 is configured as a hole or a third opening that 174 which extends at least partially within the body of the plate 124. As illustrated, the third opening 174 extends completely through the body of the plate 124.
Now referring to figures 1 and 4A-4F, forceps 18 include a first lever 180 and a second lever 184 hingedly connected together in a joint 188 (that is, a pin inserted into an opening defined by both levers), which divides levers 180 and 184 between a proximal part 192 and an opposite distal part 196. The proximal part 192 of the first lever 180 defines a first handle 200 and the distal part 196 of the first lever defines the first jaw 204 which extends distally from of the first handle 200. Similarly, the proximal part 192 of the second lever 184 defines a second handle 208, and distal 196 of the second lever 184 defines a second jaw 212. The first and second handles 200 and 208 may have external adhesion surfaces 220, while the first and second jaws 204 and 212 define the engagement of the members 224. The forceps 18 include a fixture 22 which is configured to be fixedly coupled and to the bone fixation plate 14, so that selected one of the locking members 224 can be fixedly coupled to a fixation element 22 in order to fix the forceps firmly to the bone fixation plate 14. Therefore, the locking member selected 224 is configured to apply a force against the fastener 22, and thus to the bone fastener plate 14, along a direction from the fastener 22 towards the K-wire groove 114. it will be appreciated, therefore, that when the K-wire groove 114 receives a temporary fixing element (such as the K-wire 26), and the other of the locking members 224 is operatively coupled to the K-wire 26, the movement of the first and second jaws 204 and 212 towards each other approach the opening of bone 28 (see example in figure 1).
The levers 180 and 184 are hinged together, so that when the handles 200 and 208 are brought together, the locking members 224 are also brought together, and when the handles 200 and 208 are pushed apart, the locking members 224 are pulled together. also away. Referring to figure 4A, forceps 18 include a ratchet 228 that causes levers 180 and 184 to move together gradually. For example, in the illustrated embodiment the first lever 180 carries a rack that carries a plurality of teeth 236 extending from the proximal part 192 of the first lever 180, and is pivotally connected to lever 180 at a joint 244. A first arm 180 also it carries a guide 248 that defines a guide channel 252 that receives the rack 232.
The second lever 184 carries a pair of opposite channel walls 256 which defines a channel 260 between them. Channel 260 receives rack 232 which is guided into channel 260 by a guide 248, so that rack 232 is transformed into channel 260. The walls of channel 256 still carry at least one tooth 264 which can be a skewed spring inside the slot with the teeth 236 of the rack 232. The tooth 264 and the teeth 236 can be configured in such a way that the tooth 264 moves over the teeth 236 when the handles 200 and 208 are brought together. The force of the spring provides resistance while the tooth 264 walks along each tooth 236, biases of the tooth 264 into the valleys between the adjacent teeth 236 in order to provide a tactile return like the handles 200 and 208, and thus, the members of slot 224 close gradually. Teeth 236 and 264 can further be configured in such a way that interference prevents tooth 264 from walking along teeth 236 when the separating force is applied to handles 200 and 208, if desired. The tooth 264 can include a locking surface that can be pressed by the user against the force of the spring to bring the tooth 264 out of the slot with the teeth 236 in a way that allows the separation of handles 200 and 208, and thus, the separation of the locking members 224. In another embodiment, the teeth 236 and 264 can be configured so that the tooth 236 gradually moves along the teeth 264 in a manner described above both when the handles 200 and 208, and thus, the members of housing 224 are separated, and when handles 200 and 208, and thus housing member 224 are brought together.
As shown in figure 4A, handles 200 and 208, and jaws 204 and 212 can be separate components that are coupled together. It should be understood, however, that handles 200 and 208, and jaws 204 and 212 can be integrally formed so that levers 180 and 184 each define a single arm.
As best shown in figures 4B and 4C, the engaging member 224 of the first jaw 204 can be configured to be fixedly coupled to a fixing plate 14. As shown, the first jaw 204 includes a first or a fixing element receiving an opening 300 extending transversely through the locking member 224, and a second or access opening 304 extending transversely through the locking member 224, so that the central axes of the first and second openings 300 and 304 are generally perpendicular to the outer surface 56 of the bone fixation plate 14. As shown in figure 4B-4D, the first opening 300 is configured to receive the fastening element 22 so that the fastening element 22 extends completely through the first opening 300 and fits in the second opening 80 of the bone fixation plate 14 so that the first jaw 204 is fixedly attached to the bone fixation plate 14. As shown, the element bone anchor 22 is a pin having a pin body 310 and a coupler 314 extending from a distal end of the pin body. In the illustrated embodiment, the coupler 314 defines external threads 318 which are configured to fit the internal threads 88 of the second opening 80 of the bone fixation plate 14. As best shown in figure 4F, the coupler part 314 of the pin has a dimension which is smaller than the dimension of the proximal part of the pin body 310, so as to define a shoulder at the junction of the proximal part and the coupling part of the pin body 310. The first opening 300 includes a dimension such that a diameter that is substantially equal to the size or diameter of the fastener 22 so that when the fastener 22 securely engages the first jaw 204 with the bone plate 14, the bone plate 14 cannot be moved relative to the first jaw 204, although it should be understood that aperture 300 can be of any size as desired. When the coupler 314 is inserted through the opening 300 and is fixedly coupled to the bone fixation plate 14, the first jaw 204 will be attached between the shoulder and the fixation element 22 and the bone fixation plate 14 to thus firmly couple the first jaw 204 of the bone fixation plate 14.
As shown in figures 4B and 4C, the second opening 304 is positioned adjacent the first opening 300 and is configured to receive or otherwise provide an access path for a drill and / or a bone anchor 38a to pass through the first opening 76 of the bone fixation plate 14 so that the bone anchor 38a can affix the first body part 64 of the bone fixation plate 14 to the first bone segment 30a. The second opening 304 can include any dimension, such as a diameter, as desired, as long as the dimension allows the bone anchor 38a to pass there.
As shown in figures 4C and 4F, the first jaw 204 still includes a positioning element 322 that extends from the bottom surface of the locking element 224 and towards the bone plate 14. As shown, the positioning element 322 defines a cylindrical rod or pin which is configured to fit or otherwise join with the opening 96 of the bone fixing plate 14. When the pin 322 is engaged with the opening 96, and the fastening element 22 is engaged with the opening 80, the bone fixation plate 14 will be fixed relative to the first jaw 204 in a defined known position. That is, the bone fixation plate 14 can be properly aligned with the first jaw 204, and can be prevented from rotating.
As shown in figures 4B-4E, the second jaw 212 includes a temporary fastening element receiving an opening 326 that extends transversely through the engaging member 224 of the second jaw 212 so that a central axis of the opening 326 is generally perpendicular to the outer surface. 56 of the bone fixation plate 14. The opening 326 is sized to receive the temporary fixation element 26 in order to guide the temporary fixation element 26 through the second jaw 212 and into the groove 114 of the bone fixation plate 14 As shown in figure 4E, the bone fixation element 26 includes a distal end 330 which is configured to fit or otherwise extend within the second bone segment 30b in order to operatively couple the second jaw 212 to the second segment of bone. bone 30b. Therefore, when the second jaw 212 is transformed, the temporary fixation element 26 and thus the second bone segment 30b will be transformed along with the second jaw 212. Opening 326 may include a dimension, such as a diameter, that is substantially equal the size or diameter of the temporary fixing element 26, so that when the opening 326 has received the temporary fixing element 26, the temporary fixing element 26 will not move relative to the second jaw 212.
As best shown in Figure 4D, locking members 224 define the internal or opposite surfaces 350 that are shaped to allow the first and second jaws 204 and 212 to compress bone segments 30a and 30b without interference from each other. In particular, each inner surface 350 defines the recess 354 which provides a gap for the opposite engaging member 224. As shown in Figure 4D, when the inner surfaces 350 of the engaging members 224 are fully compressed substantially conform to each other that they can lean on each other.
In operation and with reference to figures 5A-5H, the bone plate 14 is aligned with and placed on or on top of the underlying bone 30 so that the bone anchor opening 76 of the first body part 64 of the plate 14 is aligned with the first bone segment 30a, and the bone anchor opening 106 of the second body part 68 of the plate 14 is aligned with the second bone segment 30b. Both before and after the bone fixation plate 14 has been aligned with the bone 30, the forceps 18 can be fixedly attached to the bone plate 14. In doing so, the bone fixation element 22 is advanced through the opening 300 of the first jaw 304 and within the opening 80 of the bone plate. The threads 318 of the fastening element 22 fit the threads 88 defined by the openings 80 in order to securely or otherwise fixedly attach the plate 14 to the first jaw 204. At this point, the forceps 18 are fixedly coupled to the bone plate 14 so that the bone plate 14 cannot move relative to forceps 18.
As shown in figures 5B and 5C, the bone anchor 38a can then be inserted through the access opening 304 of the first jaw 204 and into the bone anchor opening 76 of the bone plate 14 to thereby affix the first body part 64 from the bone plate 14 to the first bone segment 30a. Before the bone anchor 38a is inserted, a drill can be inserted through the access opening 304 and the bone anchor opening 76 to form a hole in the bone segment 30a that will be configured to receive the bone anchor 38a. When the first jaw 204 is fixedly coupled to the bone plate 14 and the bone plate 14 is attached to the first bone segment 30a, it can be said that the first jaw 204 is operatively coupled to the first bone segment 30a.
As shown in figure 5D, the second jaw 212 can then be positioned so that the opening 326 is positioned over the groove 114 of the bone plate 14. In particular, the opening 326 of the second jaw 212 can be positioned approximately on the distal side of the groove 114. Once in position, the K-wire 26 can be advanced through the opening 326 and into the groove 114 so that the distal end 330 of the K-wire 22 engages or otherwise extends into the second bone segment 30b , as shown in figure 5E. At this point, it can be said that the second jaw 212 is operatively coupled to the second bone segment 30b.
Then, the forceps 18 are driven to drive the first and second jaws 204 and 212 together so that at least one of the engaging members 224 of the first and second jaws 204 and 212 move along the longitudinal direction. As the locking members 224 move together, at least one of the first and second segments 30a and 30b will be moved towards each other so that the opening of the bone 34 is reduced. In this way the relative positions of the first and second segments have been compressed and the opening of the bone 34 reduced, the second bone anchor 38b can be advanced through the opening 106 of the second body part 68 of the bone plate 14 in order to fix the second body part 68 to the second bone segment 30b, as shown in figure 5G. Finally, forceps 18 and K-wire can be removed, leaving bone plate 14 affixed to compressed bone segments 30a and 30b as shown in figure 5H.
In another embodiment and with reference to figure 6, the bone fixation system can include a forceps having levers that are articulated together in a joint similar to the forceps shown in figures 4A-4F, except the forceps shown in figure 6 include jaws that are configured according to another modality. As shown in figure 6, the levers can include a first and a second jaw 400 and 404 respectively which are configured to compress the first and second segments 30a and 30b together in order to reduce the opening of the bone 34. As shown, the first and the second jaws 400 and 404 each include a locking member 408 arranged at a distal end of the respective extension 414.
As shown in figure 6, each extension 414 is substantially parallel to the outer surface of the bone plate and is configured so that when the forceps are compressed, the extensions 414 are able to bring the locking members 408 together. In this regard, extension 414 of the second jaw 404 is positioned vertically higher in the transverse direction than extension 414 of the first jaw 400. Therefore, when jaws 400 and 404 are compressed together, extension 414 of the second jaw 404 will be at less partially overlapped with extension 414 of the first jaw 400. This allows the engaging members 408 of the first and second jaws 400 and 404 to abut against each other when the first and second jaws 400 and 404 are fully compressed without interference from the other.
As shown in figure 6, the engaging member 408 of the first jaw 400 can be configured to be fixedly attached to the bone fixation plate, such as the bone fixation plate 420 shown in figures 7A and 7B. As shown, the first jaw 400 includes a first or fastener receiving an opening 424 that extends transversely through the engaging member 408, so that the central axis of the opening 424 will generally be perpendicular to the outer surface of the bone plate 420. Aperture 424 is configured to receive a fixture 430 so that fixture 430 extends completely through aperture 424 and engages the bone plate 14 so as to securely couple the first jaw 400 to the bone plate 420.
As shown, the fixing element 430 is a guide tube 434 having a guide body 438, and a hole 442 that extends transversely through the body of tube 438 and thus includes a central axis that is substantially perpendicular to another outer surface of the plate of bone 420. The guide tube 434 can also include a coupler 446 that extends from the distal end of the tube body 438. In the illustrated embodiment, the coupler 446 defines the outer threads 450 that are configured to fit the inner threads defined by an opening of the fixing plate 420. The guide tube 434 can be fixedly attached to the first jaw 400 with either a nut, an interference fit or any other structure capable of securely coupling the guide tube 434 to the first jaw 400. For example, in the illustrated embodiment, the guide tube body 438 defines a recess that is configured to be fitted by a reinforcement or other structure into the hole 442. When the guide tube 434 is coupled fixed to the bone fixation plate 420 and the tube body 438 is inserted into the opening 424 of the first jaw 400 so that the crimp fits into the recess of the tube body 438, the first jaw 400 will be fixedly attached to the fixation plate of bone 420. It should be understood that the guide tube 434 can also be integrally formed with the first jaw 400, and the bone plate 420 can be fixedly attached to the first jaw 400 before the bone plate 420 is positioned against the bone 30.
As shown in figure 6, the hole 442 of the guide tube 434 is configured to receive a temporary fixing element 452, which is illustrated as a K-wire 454 having a distal end 458 that is configured to fit or otherwise extend within the first bone segment 30a in order to operatively couple the first jaw 400 to the first bone segment 30a. Therefore, like hole 442, the K-wire 454 will have a central axis that extends substantially perpendicular to the other surface of the fixing plate 420.
As shown in figure 6, the second jaw 404 includes a temporary fixing element receiving an opening 460 that extends transversely through the engaging member 408 of the second jaw 404 so that the central axis of the opening 460 is generally perpendicular to the outer surface of the bone fixation plate 420. Opening 460 is sized to receive or otherwise join with guide tube 464 having a guide tube body 468 and a hole 472 extending transversely through body 468. Hole 472 has the size to receive the temporary fixation element 476, which is illustrated as the cold-K 480 having a distal end 484 which is configured to fit the second bone segment 30a. Therefore, K-wire 480 can extend through hole 472 through bone plate 420 and into the second bone segment 30b. It should be understood, however, that the bone fixation element 476 can be inserted through opening 460 without the use of guide tube 464.
As shown in figures 7A and 7B, the bone fixation plate 420 can be configured to affix the first and second segments 30a and 30b to each other. The bone fixation plate 420 can be made in different shapes and sizes for use in a wide variety of clinical applications. The bone fixation plate 420 includes a bone plate body 500 that extends substantially along a central longitudinal axis 504, and defines a proximal end 508 and a distal end 512 opposite the proximal end 508 along the longitudinal axis 504 The body of the plate 500 further defines an internal surface facing a bone 516 and an opposite external surface 520 spaced from the internal surface 516 along the transverse direction T. The body of the plate 500 still defines surfaces on opposite sides 524 and 528 which are spaced from each other along side direction A.
As shown in figures 7A and 7B, the plate body 500 includes a first body part 534 and a second adjacent body part 538. The first and second part 534 and 538 can be integrally formed (i.e., only one member) and can be configured to circumvent the underlying bone 30. In particular, the bone fixation plate 420 is configured to span the bone opening 34 so that the second body part 538 at least partially outlines the second bone segment 30b.
With continuous reference to figures 7A-7B, the bone plate 420 defines a plurality of openings 572 that extend transversely through the body of the plate 500, from the inner surface facing the bone 516 through the outer surface 520. In particular, the first part body 534 of plate body 500 defines at least two openings 572, and a second body part 538 of plate body 500 defines at least two openings 572, although it should be understood that any number of openings 572 can extend through the first and the second part 534 and 538. As shown, the openings 572 can be aligned along the longitudinal direction or the central axis of the bone plate 420.
As shown, the first body part 534 of the bone fixation plate 420 includes a first or bone anchor opening 576 that is configured to receive a bone anchor 38, and a second or fixture receiving an opening 580 that is configured to receive the fixation element 430. The first opening 576 extends through the bone fixation plate 420 and is configured to receive the bone anchor 38a in order to affix the first body part 534 of the bone fixation plate 420 to the first segment 30a. The first aperture 576 may be a variable angle hole defined by the inner surface 577 which includes a plurality of columns extending vertically or transversely 578. According to the illustrated embodiment, four columns 578 are spaced equidistantly circumferentially over the hole, although the hole can include any number of columns 578 as desired. Each column 578 has internal threads 579 so that if columns 578 are expanded to join one another (that is, if extended completely around the inner surface 577), columns 578 would form a continuous helical thread that extends over the central transverse axis of the hole. In this way, it can be said that the threads 579 of the adjacent columns 578 are operatively aligned with each other. The columns 578 are spaced circumferentially from each other in order to define the corresponding axes that are angled in relation to the central transverse axis, so that a screw can extend through hole 576, and any of the angles while being threadedly fixed to the threads 579.
The inner surface 577 that defines the hole further includes a plurality of arched pockets 581 that protrude into the body of the plate in a circumferential location between adjacent columns 578. Pockets 581 each have an arched surface582 that is concave with respect to a direction radially out of the center axis of the hole. Bone anchor 38 can be provided as a variable lock bone anchor that can thread threads 579 at variable angular positions. Alternatively, the bone anchor 38 can be provided as a fixed angle closing screw. The variable angle hole can be configured to allow the bone anchor to fit the 579 threads in any angular orientation as desired, up to +/- 15 ° (example, within an average of 30 °) in relation to the central axis, which extends along the transverse direction T.
As shown in figures 7A and 7B, the second opening 580 also extends through the bone fixation plate 420 and includes a coupler 584 that is configured to be fitted by the fixing element 430 in order to fix the first jaw 400 firmly to the plate bone fixation 420. In the illustrated embodiment, coupler 584 includes internal threads 588 that are configured to be fitted by the external threads 450 defined by fixing element 430. It should be understood, however, that coupler 584 can include another structure that not internal threads 588. For example, coupler 584 can define a break in the assembly.
As shown, the second body part 538 of the bone fixation plate 14 includes a first or bone anchor opening 606 that is configured to receive a bone anchor 38, and the second opening 610 that is configured to receive the lead wire. K 454. The first opening 606 extends through the bone fixation plate 420 and is configured to receive the bone anchor 38b in order to affix the second body part 538 of the bone fixation plate 420 to the second bone segment 30b . first opening 606 is identical to first opening 576 of first body part 534 of bone plate 420, and therefore includes columns 578 and pockets 581 as described above.
As shown in figures 7A and 7B, the second opening 610 also extends through the bone fixation plate 420 and defines a K-wire groove 614 that is configured to receive the K-wire 454 so that the K-wire 454 can fit the second bone segment 30b. As shown in figure 7B, the K-wire groove 614 has a side width Ws and a longitudinal length Ls that is substantially larger than the side width Ws. The lateral width Ws of the K-wire groove 614 can be substantially equal to the diameter of the K-wire 454 in order to prevent lateral misalignment of the bone fixation plate 420 during compression of the bone segments, while at the same time allowing the K-wire 454 turns into the groove 614 along the longitudinal direction L. The longitudinal length Ls of the K-wire groove 614 can be a length that allows the K-wire 454 and thus the second bone segment 30b to turn towards the first bone segment 30a on the forceps compression. It should be understood, however, that the second opening 610 can have any desired dimension. For example, the second opening 610 can be a K-wire groove having a lateral width that is greater than the diameter of the K-wire or the second opening 610 can define a shape other than the groove that allows the wire K transform.
In operation and with reference to figures 8A-8E, the bone plate 420 is aligned with and placed on or on top of the underlying bone 30 so that the bone anchor opening 576 of the first body part 534 of the plate 420 is aligned with the first bone segment 30a, and the bone anchor opening 606 of the second body part 538 of the plate 420 is aligned with the second bone segment 30b. Both before and after the bone fixation plate 420 has been aligned with the bone 30, the forceps 18 can be fixedly attached to the bone plate 420. In doing so, the fixation element 430 is advanced through the opening 424 of the first jaw 400 and inside the opening 580 of the bone plate 420. The threads 450 of the fixing element 430 fit the threads 588 defined by the openings 580 to securely couple the plate 420 to the first jaw 400. At this moment, the forceps are fixedly attached to the bone plate 420 so that bone plate 420 cannot be moved relative to the forceps.
As shown in figures 8B and 8C, the temporary fixation element 452 can be inserted through hole 442 of the fixation element 430 and into the first bone segment 30a and the second temporary fixation element 476 can be inserted through the opening 460 either directly or through a hole 472 of the guide tube 464 and within the second bone segment 30b. At this time, the first and second jaws 400 and 404 are operatively coupled to the first and second segments 30a and 30b.
Referring to figure 8D, forceps 18 can then be operated to drive the first and second jaws 400 and 404 together so that at least the engaging members 408 of the first and second jaws 400 and 404 move along longitudinal direction. As the locking members 408 move together, at least one of the first and second segments 30a and 30b will be moved towards each other so that the bone gap 34 is reduced. In this way, the relative positions of the first and second segments 30 a and 30b are adjusted in relation to each other. Once the bone segments have been compressed and the bone opening 34 reduced, the first and second bone anchors 38a and 38b can be advanced through the openings 576 and 606 of the bone plate 420 in order to affix the bone plate. bone 420 to the first and second bone segments 30a and 30b, as shown in figure 5E. Finally, forceps 18 and K-strands 452 and 476 can be removed, leaving bone plate 420 affixed to compressed bone segments 30a and 30b.
It should be appreciated that the bone fixation system can be provided as a set with one or more, even all, of the disclosed components, including, but not limited to, one or more bone fixation plates that can be of the same size and shape or differently, a plurality of bone anchors configured in the same or differently, and one or more forceps configured in the same or differently. It should be appreciated that the components of the bone assembly can be provided as described above in relation to the various alternative modalities and modalities. In addition, the components of the set can be sold at the same time in a common package, or at different times in different packages.
It should be appreciated that the methods described here may include the step of coupling the first forceps jaw to the bone plate without first placing the bone fixation plate over the bone segments, so that the forceps will be fixedly attached to the plate and can be used to position the bone plate.
The modalities described in connection with the illustrated modalities have been presented by way of illustrations, and the present invention, therefore, is not intended to be limited to the disclosed modalities. In addition, the structure and characteristics of each modality described above can be applied to the other modalities described here, unless otherwise indicated. Therefore, those skilled in the art will realize that the invention is intended to involve all modifications and alternative arrangements including within the spirit and scope of the invention, for example, as mentioned above by the appended claims.

权利要求:
Claims (39)
[0001]
1. Bone fixation system (10) configured to move at least one of a first bone segment (30a) and a second bone segment (30b) in relation to the other, the first and second bone segments (30a, 30b) being separated by a bone opening (34), the system characterized by the fact that it comprises: a fixation element (22) configured to be received by an opening of the fixation element (80) defined in a bone fixation plate ( 14) to thus firmly couple the fixing element (22) to the bone fixing plate (14), the bone fixing plate (14) further defining at least one bone screw opening (72) configured to receive a screw bone (38a, 38b); a first lever (180) that defines a first jaw (204), the first jaw (204) including a first locking member (224) that defines an opening (300) that is configured to receive the fastener (22), so that when the opening (300) of the first lever (180) receives the fixing element (22) and the fixing element (22) is fixedly coupled to the bone fixing plate (14), the first lever (180) it is fixedly coupled to the bone fixation plate (14); and a second lever (184) hingedly coupled to the first lever (180), the second lever (184) defining a second jaw (212) defining a second locking member (224), the second locking member (224) configured for receive a temporary fixing element (26) to thus operationally couple the second lever (184) to the second bone segment (30b), so that the central movement of at least one of the first lever (180) and the second lever (184 ) in relation to the other causes movement of at least one of the first bone segment (30a) and of the second bone segment (30b) in relation to the other, in which the first lever (180) is configured to be fixedly coupled to the bone fixation plate (14) with the fixation element (22) without first placing the bone fixation plate (14) on the first and second bone segments (30a, 30b) and before the second fitting member (224 ) receive the temporary fixing element (26).
[0002]
2. Bone fixation system (10), according to claim 1, characterized by the fact that the first and second levers (180, 184) are defined by a forceps that further comprises a joint that articulates coupling to first lever (180) to the second lever (184).
[0003]
3. Bone fixation system (10), according to claim 1, characterized by the fact that the fixation element (22) is a threaded pin that fits threadably into the bone fixation plate (14), in order to couple the fixing element (22) to the bone fixing plate (14).
[0004]
Bone fixation system (10) according to claim 1, characterized in that the fixation element (22) includes a body and a coupler that extend from one end of the body, the coupler having a dimension smaller than that of the body to thereby define a shoulder at a junction of the body and the coupler, where one of the first and second jaws (204, 212) is clamped between the shoulder of the fastener (22) and the plate bone fixation (14) when the fixation element (22) is fixedly coupled to the bone fixation plate (14).
[0005]
5. Bone fixation system (10), according to claim 1, characterized by the fact that the first lever (180) also includes a second opening that extends through the first jaw (204), the second opening configured for providing an access path to the bone plate (14) so that a bone anchor can pass through the second opening to thereby secure the bone plate (14) in the first bone segment (30a).
[0006]
6. Bone fixation system (10) according to claim 5, characterized by the fact that it also comprises the bone anchor, in which the bone anchor is a bone screw (38a, 38b).
[0007]
7. Bone fixation system (10) according to claim 1, characterized in that the fixation element (22) is a guide tube having a body and the guide tube defines a hole that extends through the body .
[0008]
8. Bone fixation system (10) according to claim 7, characterized by the fact that it also comprises a K-wire configured to extend through the hole of the guide tube and fit the first bone segment (30a) to there, operatively couple the first lever (180) to the first bone segment (30a).
[0009]
9. Bone fixation system (10) according to claim 7, characterized by the fact that the body of the guide tube creates interference with the opening of the first jaw (204), so that when the guide tube it is received by opening the first jaw (204) and the guide tube is fixedly coupled to the bone fixation plate (14), the first jaw (204) will be fixedly coupled to the bone fixation plate (14).
[0010]
10. Bone fixation system (10) according to claim 1, characterized by the fact that the second lever (184) also includes a guide tube that is configured to join the second fitting member (224), the guide tube including a body and a hole extending through the body.
[0011]
11. Bone fixation system (10) according to claim 10, characterized in that the guide tube is configured to be received by the second fitting member (224), in order to join the guide tube to the second member plug-in (224).
[0012]
Bone fixation system (10) according to claim 10, characterized in that the temporary fixation element (26) is configured to extend through the hole in the guide tube.
[0013]
13. Bone fixation system (10) according to claim 12, characterized in that the temporary fixation element (26) is a K-wire.
[0014]
14. Bone fixation system (10) according to claim 1, characterized in that the second lever (184) also includes a guide tube that is integral with the second jaw (212), the guide tube including a body and a hole that extend through the body.
[0015]
15. Bone fixation system (10) according to claim 14, characterized in that the temporary fixation element (26) is configured to extend through the orifice of the guide tube.
[0016]
16. Bone fixation system (10) according to claim 1, characterized in that the opening of the first fitting member (224) is a first opening, the second fitting member (224) defines a second opening , and each of the first and second openings extends along the respective first and second central axes that are perpendicular to the respective first and second bone segments when the second lever (184) is operationally coupled to the second bone segment (30b) .
[0017]
17. Bone fixation system (10), according to claim 1, characterized by the fact that it also comprises a ratchet connected between the first and the second levers (180, 184) and configured to gradually move the first and second levers (180, 184) when a compressive force is applied to the first and second levers (180, 184).
[0018]
18. Bone fixation system (10) according to claim 1, characterized by the fact that the opening includes a dimension that is equal to a dimension of the fixation element (22), so that when the fixation element (22) couples the first mandible (204) to the bone plate (14), the bone plate (14) cannot move in relation to the first mandible (204).
[0019]
19. Bone fixation system (10) according to claim 1, characterized by the fact that it also comprises the bone plate (14), the bone plate (14) including a fixation element (22) that receives an opening that is configured to receive the fastener (22).
[0020]
20. Bone fixation system (10) according to claim 19, characterized in that the fixation element (22) that receives an opening includes internal threads that are configured to be engaged by external threads defined by the opening element fixation (22).
[0021]
21. Bone fixation system (10) according to claim 1, characterized by the fact that the fixation element (22) is configured to be inserted through the opening (300) and into the bone plate (14).
[0022]
22. Bone fixation set configured to fix the first and second bone segments (30a, 30b) which are separated by a bone opening (34), the set characterized by the fact that it comprises: at least one fixation plate bone (14) including a first body part (64) and a second body part (68) spaced from the first body part (64) along a longitudinal direction, the first body part (64) which defines at least at least two openings, a first opening (72) of the at least two openings is configured to receive a bone anchor (38a) to thereby fix the bone fixation plate (14) to the first bone segment (30a) and a second opening (80) of the at least two openings includes a coupler (84), and the second body part (68) defining at least two openings, a first opening (72) of the at least two openings in the second body part (68) is configured to receive a bone anchor (38b) to thus fix the fixation plate connection of bone (14) to the second bone segment (30b), and a second opening (72) of at least two openings includes a groove (114) having a longitudinal dimension that extends in the longitudinal direction and a lateral dimension that extends in the lateral direction which is perpendicular to the longitudinal direction, where the longitudinal dimension is greater than the lateral dimension, and the groove (114) is configured to receive a temporary fastening element (26) so that the temporary fastening element (26 ) is longitudinally translatable into the groove (114); a fastener (22) defining a coupler (314) configured to engage with the coupler (84) of the first body part (64); and a forceps (18) having: a first lever (180) that defines a first jaw (204), the first jaw (204) including a first engaging member (224) that defines an opening (300) that is configured to receive the fixing element (22) so that when the opening (300) receives the fixing element (22) and the fixing element (22) is fixedly coupled to the first body part (64), the first lever ( 180) is fixedly coupled to the bone fixation plate (14); and a second lever (184) hingedly coupled to the first lever (180), the second lever (184) defining a second jaw (212) defining a second locking member (224), the second locking member (224) configured for receive the temporary fixing element (26) to thus operationally couple the second lever (184) to the second bone segment (30b), so that the pivoting movement of at least one of the first lever (180) and the second lever ( 184) in relation to the other cause movement of at least one of the first bone segment (30a) and second bone segment (30b) in relation to the other, in which the first lever (180) is configured to be fixedly coupled to the first body part (64) without first placing the bone fixation plate (14) on the first and second bone segments (30a, 30b) and before the second locking member (224) receives the temporary fixation element ( 26).
[0023]
23. Bone fixation set according to claim 22, characterized in that the first openings of the first and second body parts (64, 68) are tapered and include internal threads.
[0024]
24. Bone fixation set according to claim 22, characterized in that the coupler (84) of the first body part (64) comprises internal threads.
[0025]
25. Bone fixation set according to claim 22, characterized in that the openings are aligned along a longitudinal direction.
[0026]
26. Bone fixation set according to claim 22, characterized in that the first openings of the first and second parts of the body (64, 68) are orifices of varying angle.
[0027]
27. Bone fixation set according to claim 26, characterized by the fact that each variable angle hole includes at least two columns separated by a pocket, each column defining internal threads.
[0028]
28. Bone fixation set according to claim 22, characterized by the fact that it also comprises the temporary fixation element (22) which is configured to be received by the groove (114), in which the temporary fixation element ( 26) is a K-wire.
[0029]
29. Bone fixation set according to claim 22, characterized in that the first body part (64) and the second body part (68) are integrally formed.
[0030]
30. Bone fixation set according to claim 22, characterized by the fact that each of the first and second body parts (64, 68) includes a pair of enlarged regions, each enlarged region defining an opening configured to receive a bone anchor.
[0031]
31. Bone fixation set according to claim 22, characterized in that the first part of the body (64) further defines a positioning element configured to align the bone fixation plate (14) with the forceps with a defined position.
[0032]
32. Bone fixation set according to claim 31, characterized in that the positioning element is a hole.
[0033]
33. Bone fixation set according to claim 22, characterized in that the opening of the first lever (180) is configured to align with the second opening of the first body part (64) of the bone fixation plate (14), so that the fastening element (22) can be received by both openings of the first jaw (204) and the second opening of the first part of the body (64) to thus firmly couple the first lever (180) to the bone fixation plate (14).
[0034]
34. Bone fixation set according to claim 33, characterized in that the first fixation element (22) is a pin.
[0035]
35. Bone fixing assembly according to claim 33, characterized in that the first fixing element (22) is a guide tube having a guide tube body and a hole extending through the guide tube body .
[0036]
36. Bone fixation set according to claim 35, characterized by the fact that it also comprises a K-wire that is configured to extend through the hole of the guide tube and into the first bone segment (30a) so operatively couple the first lever (180) to the first bone segment (30a).
[0037]
37. Bone fixation set according to claim 33, characterized in that the first lever (180) further includes a second opening that extends through the first jaw (204), the second opening configured to align with the first opening of the first body part of the bone fixation plate (14), so that a bone anchor can be inserted through the second opening of the first jaw (204) and the first opening of the first body part (64 ) of the bone fixation plate (14).
[0038]
38. Bone fixation set according to claim 22, characterized in that the second lever (184) also includes an opening that extends through the second jaw (212), the opening configured to receive the fixation element temporary (26) to operationally couple the second lever (184) to the second bone segment (30b).
[0039]
39. Bone fixation set according to claim 22, characterized in that the first lever (180) further includes a positioning element configured to fit the first part of the body of the bone fixation plate (14) for thus preventing the relative rotation between the first jaw (204) and the bone fixation plate (14).

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TW201206392A|2012-02-16|

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EP2563252B1|2016-04-27|

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WO2011139740A1|2011-11-10|

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EP2563252A1|2013-03-06|

CA2789805A1|2011-11-10|

CA2789805C|2018-01-23|

US9113969B2|2015-08-25|

JP2013526926A|2013-06-27|

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法律状态:
2017-03-28| B15I| Others concerning applications: loss of priority|

2017-05-02| B12F| Appeal: other appeals|

2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

2019-08-06| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

2020-03-24| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|

2020-08-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2020-10-27| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 27/04/2011, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

US32834710P| true| 2010-04-27|2010-04-27|

US32838110P| true| 2010-04-27|2010-04-27|

US61/328.381|2010-04-27|

PCT/US2011/034073|WO2011139740A1|2010-04-27|2011-04-27|Bone fixation systems|

US61/328.347|2020-04-27|

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