• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a surgical instrument (10) for applying a U-shaped osteosynthesis clip (1) having two lateral bars (2, 3) interconnected at their proximal ends by a transverse bar (4), said transverse bar and the proximal portions of said two lateral bars forming a proximal region of said clip, said instrument comprising: - at least one housing (13, 14) for temporarily receiving said proximal region of said osteosynthesis clip, the distal ends of said two bars lateral protruding out of said instrument, - at least locking means (13c, 13d) adapted to prevent the translation of said transverse bar in the proximal and distal directions, - at least anti-rotation means (14) of the staple around its crossbar, - at least spacer means (15a, 15b, 18) adapted to cooperate with said proximal region of said clip to increase the distance istance between the distal ends of the two side bars. The present invention also relates to a kit comprising such an instrument and a clip intended to be received in such an instrument.
    公开号:FR3016510A1
    申请号:FR1450418
    申请日:2014-01-20
    公开日:2015-07-24
    发明作者:Christophe Averous；Gualter Vaz；Frederic Leiber-Wackenheim；Christophe Cermolacce；Patrice Determe；Stephane Guillo；Hubert Rocher；Christophe Roy；Jean-Charles Roussouly；Arnaud Fiquet；Bertrand Seutin
    申请人:Arthroplastie Diffusion；
    IPC主号:
    专利说明:

    [0001] The present invention relates to an instrument for placing an osteosynthesis clip, for example for performing osteotomies, arthrodeses between two bone fragments, or for fixing soft tissues to the bone. Many surgical staples for bone repair exist. Some of these staples have a global inverted U shape, the distal ends of the U side bars, or anchor bars, being intended to be inserted into two different bone fragments, in order to bring them together. with a compression to obtain a bone fusion for example. The anchor bars are interconnected by a central beam forming the solid connection between these anchor bars and hereinafter cross bar. In the present application, the distal end of a device, such as an instrument or staple, should be understood to mean the end furthest from the surgeon's hand and the proximal end to be understood as meaning the end closest to the surgeon's hand. Also, in this application, the "distal direction" should be understood to mean the impaction direction of the staple and the "proximal direction" should be understood to mean the direction opposite to the direction of impaction. The U-shaped staples must be able to provide some elasticity in order to promote bending of the side bars and the cross bar. In fact, generally, an osteosynthesis clip is elastically deformable and is adapted to adopt a closed rest configuration, in which each side bar forms an angle α with the transverse bar, and an open, constrained configuration in which each side bar forms an angle 13 with the transverse bar, the angle 13 being greater than the angle a so that the side bars move away from each other during the passage of the staple of its closed configuration to its open configuration. Thus, in the open configuration of the staple, the distal ends of the two side bars are separated by a distance greater than the distance between these two same distal ends in the configuration of the staple at rest. An osteosynthesis clip is intended to be implanted in its open configuration under stress in two bone elements to be brought together. Thus, once implanted, it naturally tends to return to its configuration at rest, without constraint, each side bar thus exerting a compressive force tending to bring the bone element in which it is implanted towards the other bone element in which the another sidebar is implanted. The osteosynthesis clip thus allows the postoperative maintenance of the bone elements in a normal physiological position and a compression during the time of the bone consolidation. There is therefore the need for an easy manipulation instrument, capable at first to receive the staple in its rest configuration, then in a second step to place it in its configuration under stress, and finally to implant it, in other words, to insert it into the bone fragments to be approximated. The present invention aims to remedy this need by providing a surgical instrument for the installation of a U-shaped osteosynthesis clip, to be placed in a configuration under stress at the time of implantation into the bone fragments.
    [0002] The present invention relates to a surgical instrument for implanting a U-shaped osteosynthesis clip having two lateral bars interconnected at their respective proximal ends by a transverse bar, said transverse bar and the proximal portions of said two lateral bars forming a proximal region of said staple, said instrument comprising: - at least one housing for temporarily receiving said proximal region of said staple, the distal ends of said two side bars protruding from said instrument, - at least one locking means adapted to prevent translation of said staple transverse bar in the proximal and distal directions, at least anti-rotation means of the staple around its transverse bar, at least separation means able to cooperate with said proximal region of said staple in order to increase the distance between the distal ends of the two bars atérales. The instrument according to the invention makes it easy to place a U-shaped osteosynthesis clip under stress. As will become apparent from the description which follows, the manipulation of the instrument according to the invention is particularly easy. In one embodiment, at least a portion of said spacing means is removable.
    [0003] In one embodiment, said spacing means comprise an abutment structure disposed inside the U formed by the staple, in the proximal region thereof, said structure bearing on the proximal portion of each of said lateral bars, said structure being able to increase its dimension in the transverse direction to separate said distal ends of the two lateral bars. For example, said structure comprises two adjacent lugs movable relative to each other in the transverse direction, and an insert adapted to be temporarily accommodated between said two lugs. Thus, when the insert is not present between the two lugs and that the two lugs are in contact with each other, the dimension of said structure in the transverse direction is formed by the dimensions of the two lugs placed thereon. one next to the other. This dimension corresponds, for example, to the distance between the proximal portions of the two lateral bars of the U-shaped staple, when the U-clip is at rest.
    [0004] On the other hand, when the insert is placed between the two lugs, they separate from one another and the dimension of said structure in the transverse direction is then formed of the dimensions of the two lugs to which is added the dimension of the insert. The dimension of the structure is thus increased and it corresponds to a distance between the distal ends of the two lateral bars of the U-shaped staple increased: the U-shaped staple is then under stress. In one embodiment, the instrument comprises at least one forceps comprising two legs interconnected at their proximal ends by a connecting bridge, the two legs being parallel when they are not subjected to any stress, said two legs being close to each other and form between them a non-zero angle under the effect of a pressure exerted on each of them in the direction of the other leg, each of said two lugs being located on one of said two legs, facing each other. The two legs of the instrument thus form a kind of sugar tongs or U-clamp spring return, and it is easy to bring the lugs from one another, pressing on both legs, as to tighten the clamp. In one embodiment, said insert is a rod whose proximal end passes through the center of said junction bridge and whose distal end is accommodated between said two lugs. When the distal end of the rod is received between the two lugs, the dimension of the abutment structure in the transverse direction is increased relative to the situation in which the two lugs are in contact with each other. The clip in the housing is then placed in its stress configuration and the distal ends of its side bars are spaced from each other with respect to the rest configuration of the clip. In one embodiment, the instrument further comprises on a distal face a transverse groove adapted to accommodate said crossbar. Thus, when the stress staple has begun to be inserted into the bone fragments to be brought together, it is removed from the housing of the instrument. The crossbar of the staple is then slid into the transverse groove on a distal face of the instrument and it is possible to press the instrument to continue to drive the staple into the bone fragments. In one embodiment, the instrument further comprises on a proximal surface a bearing surface adapted to receive a distal pressure. Thus, when the transverse bar of the staple half inserted into the bone fragments is housed in the transverse groove, the surgeon can hammer the surface located on the proximal face of the instrument in order to drive the staple into the bone fragments. .
    [0005] In one embodiment, said housing comprises, preferably consists of, an open groove on one side of said instrument. Such an open groove allows particularly easy loading and unloading of the staple on the instrument. In one embodiment, said locking means comprise a transverse groove comprising a proximal face and a distal face, said transverse groove being able to receive the transverse bar of the staple. Engagement of the staple cross bar in the transverse groove blocks any movement of the staple in the distal or proximal direction. The impact of the staple can therefore be achieved safely. In one embodiment, said anti-rotation means comprise two longitudinal grooves adapted to receive the proximal portions of the lateral bars of the staple. Since the proximal portions of the lateral bars are retained within the longitudinal grooves, the staple can not rotate about the axis defined by the transverse bar. Thus, the staple is held in a specific plane, in particular the plane corresponding to the direction of impact of the staple in the bone fragments to be brought together. In one embodiment, the instrument includes information means indicating the spacing of the clip to be received in said instrument when the clip is under stress. The spacing of a U-shaped clip corresponds to the distance between the respective distal ends of the two lateral bars. For example, these information means may be transverse holes in the instrument. Thus, before implantation of the staple, the surgeon can firstly practice in the bone fragments the holes 10 intended to receive the distal ends of the two lateral bars on the basis of the information given by the relative position of the transverse holes of the the instrument, and in particular the distance from one transverse hole to the other. Another aspect of the present invention is a kit comprising an instrument as described above, and at least one U-shaped osteosynthesis clip having two side bars interconnected at their respective proximal ends by a crossbar. The advantages of the present invention will emerge more clearly from the description which follows and the accompanying drawings, in which: FIG. 1 is a front view of a U-shaped clip that can be used with the instrument according to the invention, in its configuration Figure 2A is a perspective view of an embodiment of the instrument according to the invention. Figure 2B is a front view of the pliers of the instrument of Figure 2A. is a front view of the instrument according to the invention with the clip of FIG. 1 loaded on the instrument, in the rest configuration; FIG. 4 is a front view of the instrument according to the invention with the FIG. 5 is a front view of the instrument according to the invention with the staple of FIG. FIG. 1 loaded onto the instrument, with the insert inserted and the clip in constrained configuration, FIG. 6 is a perspective view of the first step of placing the clip of FIG. 1 in bone fragments using the instrument 35 of FIG. 2A; FIG. 7 is a perspective view of the second step of FIG. Figure 1 is a perspective view of a third step of the placement of the staple of Figure 1 with the instrument of Figure 2A, the staple being half-inserted into the bone fragments. the clip of FIG. 1 with the instrument of FIG. 2A, the staple being half-inserted in the bone fragments, the insert having been removed, FIG. 9 is a perspective view of the staple of FIG. FIG. 10 is a front view of a fourth step of laying the clip of FIG. 1 with the aid of the instrument of FIG. 2A, the staple being shown in FIG. half inserted into the bone fragments, the instrument according to the invention being used to continue the insertion of the staple into the Fig. 11 is a front view of a fifth step of laying the clip of Fig. 1 with the instrument of Fig. 2A, the clip being fully inserted into the bone fragments, Figure 12 is a perspective view of the staple of Figure 1 completely inserted into the bone fragments. Referring to Figure 1, there is shown a clip 1 used with the instrument 10 according to the invention (see Figure 2A), for example for the approximation of two bone fragments (21, 22) (see Figure 6). The bone fragments may be bone fragments of the foot or hand, or two adjacent vertebrae to be brought together, or any other fragmented bone. The clip 1 has an inverted U-shaped overall shape and comprises two lateral bars (2, 3) corresponding to the vertical bars of the U. Each lateral bar (2, 3) comprises a distal end (2a, 3a) intended to be inserted in a bone fragment. Each lateral bar (2, 3) also has a proximal end (2b, 3b) located opposite the distal end (2a, 3a). The staple 1 further comprises a transverse bar 4 corresponding to the horizontal bar of the U and interconnecting the respective proximal ends (2b, 3b) of the two lateral bars (2, 3). As can be seen from the figures, the two lateral bars (2, 3) and the transverse bar 4 are located in the same plane, the plane of the U. The transverse bar may for example have a square or rectangular section. The transverse bar 4 and the proximal portions of the two lateral bars (2, 3) form a proximal region 1b of the staple 1, as shown in FIG.
    [0006] As will appear from FIG. 5, the staple 1 is elastically deformable and is able to adopt a closed rest configuration, represented in FIG. 1, in which each lateral bar (2, 3) forms an angle a with the bar 4, and an open stress configuration, shown in FIG. 5, in which each lateral bar (2, 3) forms an angle R with the transverse bar 4, the angle R being greater than the angle a so that that the distal ends (2a, 3a) of the lateral bars (2, 3) deviate from one another during the passage of the staple 1 from its closed configuration to its open configuration.
    [0007] Thus, in the example shown, the angle a is an acute angle so that the distal ends (2a, 3a) of the lateral bars (2, 3) are directed towards the inside of the U in the rest configuration of the staple 1 (FIG. 1), when no stress is exerted on the lateral bars (2, 3). In this same example, the angle R is a substantially straight angle, so that, in the open, constrained configuration of the staple 1, shown in FIG. 5, the two lateral bars (2, 3) are substantially parallel to each other. The distance D2 separating the distal ends (2a, 3a) of the lateral bars (2, 3) in the constrained configuration (FIG. 5) of the staple 1 is therefore greater than the distance D1 separating the distal ends (2a, 3a). lateral bars (2, 3) in the idle configuration (FIG. 1) of said staple 1. However, in embodiments not shown, the angles a and 13 could have different values than those mentioned above.
    [0008] The clip 1 may be made of a biocompatible material allowing the elastic deformation of the clip, for example a biocompatible material chosen from stainless steel, the alloys Chrome / Cobalt, polylactic acid, polyetheretherketone, titanium and its alloys, and mixtures thereof.
    [0009] Referring to FIG. 2A, there is shown an instrument 10 according to the invention for implanting a staple 1 of FIG. 1 into bone fragments, for the purpose of bringing said fragments together. The instrument 10 as shown in Figure 2A comprises a clamp 10a and a rod 18 forming an insert.
    [0010] The clamp 10a comprises a first leg 11 and a second leg 12, symmetrical with respect to a longitudinal axis A aligned in the proximal-distal direction in the example shown, interconnected by their respective proximal ends (11b, 12b) by a connecting bridge 30, their respective distal ends (11a, 12a) remaining free. In the rest position of the clamp 10a, that is to say when no stress is exerted on the two legs (11, 12), as shown in FIGS. 2A and 2B, said two legs (11, 12 ) are parallel to each other. In Figure 2B are shown the longitudinal axis B11 of the leg 11 and the longitudinal axis B12 of the leg 12. These two axes are parallel to each other. The two legs (11, 12) can be brought closer together under the effect of a pressure exerted on each of them, in particular at its distal end (11a, 12a), in the direction of the other leg or the longitudinal axis A, as for a sugar tong. The legs (11, 12) then form between them a non-zero angle (see Figure 3). The clamp 10a of the instrument 10 is provided on its front face with a transverse groove 13 formed of a first groove portion 13a located on the front face of the distal end of the first leg 11 and a second portion. 13b of groove located on the front face of the distal end of the second leg 12, said two portions being in the transverse extension of each other, so that when pressure is exerted on said distal ends in view to bring the legs (11, 12) closer together, the two portions form more than one continuous groove 13 (see Figure 3). In the example shown, the transverse groove 13 is arcuate in order to adapt to the deformation of the crossbar 4 of the clip 1 when the latter is in its configuration under stress. In other embodiments, the shape of the groove may be different in order to adapt to the shape of the crossbar when the clip is under stress. With reference to FIGS. 2A and 2B, the transverse groove 13 has a proximal face 13c and a distal face 13d. The distal ends (11a, 12a) of the legs (11, 12) are symmetrical with respect to the longitudinal axis A. The transverse groove 13 is extended at each of its ends by a longitudinal groove 14 extending in the distal direction . As will appear in the following description, the transverse groove 13 and the two longitudinal grooves 14 form a U-shaped housing adapted to receive the proximal region 1b of the clip 1 of Figure 1 in its rest configuration, when the distal ends of the legs (11, 12) are brought together in contact with each other. The open nature of the transverse grooves 13 and longitudinal 14 allows easy loading and unloading of the clip 1 on the clamp 10a. As will become apparent from the following description, the proximal face 13c and the distal face 13d form locking means capable of preventing translation in the proximal and distal directions of the cross bar of the staple 1 when the staple is mounted on 10. Similarly, it will be apparent from the following description that the longitudinal grooves 14 form anti-rotation means of the staple 1 around its transverse bar 4 when the staple 1 is mounted on the clip 10a. the instrument 10. The distal face 13d of the transverse groove 13 and the longitudinal grooves 14 define a stop structure 15 formed on the front face of the clamp 10a of the instrument 10. The abutment structure 15 is formed of a first lug 15a located on the front face of the distal end of the first leg 11, and a second lug 15b located on the front face of the distal end of the second leg 12. The two lugs (15a, 15b) are adjacent and in extension of one another in the transverse direction, so that when pressure is exerted on said distal ends to bring the legs together, the two lugs (15a, 15b) are in contact with each other and form only one continuous abutment structure (see FIG. 3). The distal face of the clamp 10a of the instrument 10 further comprises a transverse groove 16, of which only one end is visible in Figure 2A. Like the transverse groove 13, the transverse groove 16 is formed of a first groove portion situated on the distal face of the distal end of the first leg 11 and of a second groove portion situated on the distal face of the groove. distal end of the second leg 12, said two portions being in extension of each other, so that when pressure is exerted on said distal ends to bring the legs (11, 12) between they, the two portions form more than one continuous groove 16. The distal end 11a of the first leg 11 comprises on its face 11c facing the distal end 12a of the second leg 12 a partially semi-cylindrical longitudinal recess 11d extending to the distal end of the first leg 11a. ergot 15a. In the same way, the distal end 12a of the second leg 12 comprises on its face 12c located opposite the distal end 11a of the first leg 11 a partially semi-cylindrical longitudinal recess 12d extending to the distal end of the second lug 15b. The two semicylindrical longitudinal recesses (11d, 12d) are facing one another, so that when pressure is exerted on said distal ends to bring the legs together, the two semi-circular recesses cylindrical cylinders together form a longitudinal recess of substantially conical shape in the example shown. Each leg (11, 12) also has in the proximal region of its front face a transverse hole (11e, 12e), see FIG. 2B, located on its longitudinal axis (B11, B12): the distance between the two transverse holes ( 11e, 12e) when no pressure is exerted on the legs (11, 12) of the clamp 10a, corresponds to the spacing of the distal ends (2a, 3a) of the clip 1 under stress (see also FIG. ). Thus, the position of the legs (11, 12) of the clamp 10a, namely parallel to each other, is the same at a time when the clamp 10a is not subjected to any stress as shown in FIGS. 2A and 2B, and when the clip 1 is mounted on this clip 10a and that the rod 18 forming an insert is also mounted on the clip 10a, as shown in FIG. 5. The transverse holes (11e, 12e) thus make it possible to inform the surgeon of the distance to be provided between the holes 23 (see Figure 6) to be provided in the bone fragments (21, 22 prior to the implantation of the staple 1. The transverse holes (11e, 12e) and serve as a drilling template for the holes of the The connecting bridge 30 is provided at its center with an axial hole 17 (see Fig. 2A) .Also with reference to Fig. 2A, the instrument 10 further comprises a removable insert in the form of a rod 18 provided at its proximal end with a transverse projection 19a gripping e t at its distal end of a flat 19b. As will become apparent from the following description, the flat 19b contributes to the holding of the clip 1 in the plane of the clip 10a, in other words helps to prevent the rotation of the clip 1 around its cross bar 4 at the moment of stabbing. the impaction of said clip 1. The rod 18 is dimensioned so as to be able to pass through the axial hole 17 by its distal end. When pressure is exerted on the distal ends of the legs to bring said legs together, the above-mentioned conical recess formed by the two semi-cylindrical recesses has a cone inlet of diameter greater than the diameter. of the rod 18, so that when the rod 18 is brought opposite the two semi-cylindrical longitudinal recesses (11d, 12d), it separates the two distal ends of the legs (11, 12) from one another as will be apparent from the following description. The semi-cylindrical longitudinal recesses then fit into a cylinder of the diameter of the rod 18. The proximal ends (11b, 12b) of the legs (11, 12) have flat faces forming a bearing surface 20 adapted to receive 10 distal pressure. The instrument 10 may for example be made of a material chosen from steels, plastics for medical use. The application of a staple 1 of FIG. 1, for example, to bring together two bone fragments with the aid of the instrument 10 of FIG. 2A will now be described with reference to FIGS. 3-12. The staple 1 at rest is in its closed configuration of FIG. 1. The instrument 10 is in its position shown in FIG. 2A, with the stem 18 separated, not yet mounted on the clamp 10a of the instrument 10. clip 10a is itself in a stress free position, i.e. the legs (11, 12) are parallel to each other as shown in FIGS. 2A and 2B. With two fingers, the surgeon exerts a pressure on the distal ends (11a, 12a) of the two legs (11, 12) of the clamp 10a in order to bring the latter closer together and to bring them into contact with each other. two legs forming a non-zero angle between them. In such a close configuration of the two legs, the size of the transverse groove 13, in the transverse direction, is slightly less than the length of the crossbar 4 of the staple 1. The surgeon can therefore bring the staple 1 and easily load the transverse bar 4 in the transverse groove 13 of the front face of the instrument 10, as shown in FIG. 3. The proximal portions of the lateral bars (2, 3) of the staple 1 come naturally to accommodating in the longitudinal grooves 14 of the instrument 10. The dimension in the transverse direction of the abutment structure 15, with the lugs (15a, 15b) adjacent and in contact with each other, is also slightly less than the distance separating the respective proximal portions of the two lateral bars (2, 3) from the clip 1 at rest. As also shown in Figure 3, the abutment structure 15 is thus disposed within the U formed by the staple 1, in the proximal region of the latter. The surgeon then releases the pressure he exerted on the two legs (11, 12) of the clamp 10a. The two legs (11, 12) then deviate very slightly until the structure 15 bears on the respective proximal portions of said side bars (2, 3). Finally, the distal ends (2a, 3a) of the lateral bars of the staple 1 protrude out of the instrument 10, in the distal direction. Thus, the proximal region 1b of the staple 1 is in the housing formed of transverse grooves 13 and longitudinal 14. Furthermore, the proximal face 13c and the distal face 13d of the transverse groove 13 form locking means preventing translation crossbar 4 in the proximal and distal directions. The longitudinal grooves 14, they form anti-rotation means of the staple 1 around its crossbar 4. In this position, the staple 1 is always at rest.
    [0011] The surgeon then grasps the stem 18 by its gripping projection 19a and introduces it via its distal end via the flat 19b into the axial hole 17 along the longitudinal axis A in the distal direction, as shown in FIG. its distal progression, the distal end of the rod 18 engages in the two partially semi-cylindrical longitudinal recesses (11d, 12d) and causes the spacing of the two distal ends of the legs (11, 12), as shown in FIG. Figure 5. The projection 19a gripping abuts on the connecting bridge 30 while the flat 19b bears laterally of the crossbar 4 of the clip 1. The flat 19b thus contributes to avoid the rotation of the staple 1 about its transverse bar 4 at the time of implantation of said staple 1. The dimension in the transverse direction of the abutment structure 15 is increased by the diameter of the stem 18 minus the partially semi-cylindrical recesses (11d, 12d), and the abutment 15 grows laterally on the respective proximal portions of the side bars (2, 3), causing the spacing of the distal ends (2a, 3a) of these bars.
    [0012] The clip 1 is then under stress, in its open configuration. The clamp 10a, meanwhile, found a configuration identical to that it adopts when it undergoes no stress. Thus, once the rod 18 is inserted, the two legs (11, 12) are again parallel to each other. The surgeon can then impact the staple 1 by inserting the lateral bars (2, 3) by their distal ends (2a, 3a) into holes 23 previously made in the bone fragments (21, 22) to be brought together, as shown on Figure 6. The surgeon exerts a distal pressure with a surgical hammer (not shown) on the bearing surface 20 of the clamp 10a of the instrument 10 according to the arrow F and inserts the clip 1 approximately halfway up the side bars (2, 3), as shown in FIG. 7.
    [0013] Then the surgeon removes the rod 18, as shown in Figure 8. It then exerts with his fingers a pressure on the two legs (11, 12) of the clamp 10a. In doing so, it brings back the two lugs (15a, 15b) in contact with one another and can thus easily disengage the clamp 10a from the proximal region of the clip 1. The clip 1 is half inserted into the clips. bone fragments, as shown in Figure 9. The surgeon then comes to engage the crossbar 4 of the clip 1 in the transverse groove 16 of the distal face of the clamp 10a of the instrument 10, as shown in Figure 10. From again, with the aid of a surgical hammer (not shown), it exerts a distal pressure on the bearing surface of the clamp 10a, thus causing complete insertion of the staple 1 into the bone fragments (21, 22), as shown in FIG. 11. The surgeon then removes the clip 10a, leaving the clip 1 fully inserted into the bone fragments, as shown in FIG. 12. In this configuration of the clip 1, the two lateral bars , seeking to find their position at rest, each exert a restoring force tending to bring the two bone fragments (21, 22) closer to each other. The instrument according to the invention makes it possible to load a U-shaped osteosynthesis staple at rest, to place it in its configuration under stress, then to impact it in bone fragments to be brought together in a particularly easy manner. In particular, the instrument according to the invention does not require the use of sophisticated additional tools and can be manipulated with simple fingers.
    权利要求:
    Claims (13)
    [0001]
    REVENDICATIONS1. A surgical instrument (10) for implanting a U-shaped osteosynthesis clip (1) having two lateral bars (2, 3) interconnected at their respective proximal ends by a transverse bar (4), said cross bar and the proximal portions of said two side bars forming a proximal region of said clip, said instrument comprising: - at least one housing (13,14) for temporarily receiving said proximal region of said clip, the distal ends of said two side bars projecting out of said instrument; at least locking means (13c, 13d) capable of preventing the translation of said transverse bar in the proximal and distal directions, - at least anti-rotation means (14) of the staple around its transverse bar, At least spacer means (15a, 15b, 18) adapted to cooperate with said proximal region of said clip in order to increase the distance between the ends of said clip; istales of the two side bars.
    [0002]
    2. Instrument (10) according to claim 1, characterized in that at least a portion (18) of said spacer means is removable. 20
    [0003]
    3. Instrument (10) according to claim 1 or 2, characterized in that said spacing means comprise an abutment structure (15) disposed inside the U formed by the staple, in the proximal region of this last, said structure being supported on the proximal portion of each of said lateral bars, said structure being able to increase its dimension in the transverse direction in order to move said distal ends of the two lateral bars apart.
    [0004]
    4. Instrument (10) according to claim 3, characterized in that said structure comprises two lugs (15a, 15b) adjacent displaceable relative to each other in the transverse direction, and an insert (18) adapted to be 30 temporarily accommodated between said two lugs.
    [0005]
    5. Instrument (10) according to claim 4, characterized in that it comprises at least one clamp (10a) comprising two legs (11, 12) interconnected at their proximal ends by a connecting bridge (30), the two legs being parallel when not subjected to any stress, said two legs being able to be brought closer to one another and forming between them a non-zero angle under the effect of a pressure exerted on each of them endirection of the other leg, each of said two lugs being located on one of said two legs, facing one another.
    [0006]
    6. Instrument (10) according to claim 5, characterized in that said insert is a rod (18) whose proximal end passes through the center of said junction bridge and whose distal end is accommodated between said two lugs.
    [0007]
    7. Instrument (10) according to any one of the preceding claims, characterized in that it further comprises on a distal face a transverse groove (16) adapted to receive said crossbar. 10
    [0008]
    8. Instrument (10) according to any one of the preceding claims, characterized in that it further comprises on a proximal surface a bearing surface (20) adapted to receive a distal pressure.
    [0009]
    The instrument (10) according to any one of the preceding claims, characterized in that said housing comprises, preferably consists of, an open groove (13, 14) provided on one side of said instrument.
    [0010]
    10. Instrument (10) according to any one of the preceding claims, characterized in that said locking means comprise a transverse groove comprising a proximal face (13c) and a distal face (13d), said transverse groove being able to receive the cross bar 4 of the staple 1.
    [0011]
    11. Instrument (10) according to any one of the preceding claims, characterized in that said anti-rotation means comprise two longitudinal grooves (14) adapted to receive the proximal portions of the lateral bars (2, 3) of the clip. 1.
    [0012]
    12. Instrument (10) according to any one of the preceding claims, characterized in that it comprises information means (30) indicating the distance between the staple (1) intended to be received in said instrument when this staple is under stress. 30
    [0013]
    13. Kit comprising an instrument (10) according to any one of claims 1 to 12, and at least one U-shaped osteosynthesis clip having two lateral bars (2, 3) interconnected at their respective proximal ends by a bar transverse (4). 35
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    WO2008046981A2|2008-04-24|Forceps for gripping and transporting small objects and usable in particular in dental surgery
    WO2014114853A1|2014-07-31|Self-extending implant
    WO2015004391A1|2015-01-15|Surgical staple placement assembly
    FR2764795A1|1998-12-24|Inervertebral spinal fixation cage
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    EP1967150A1|2008-09-10|Vertebral anchoring device using an intrapedicular nail
    FR3036030A1|2016-11-18|IMPLANT FOR FIXING BONE ELEMENTS
    WO2014140503A1|2014-09-18|Spinal ancillary device
    FR2930720A1|2009-11-06|CONNECTION MEMBER BETWEEN A LONGITUDINAL ELEMENT OF A VERTEBRAL OSTEOSYNTHESIS DEVICE AND A VERTEBRA, A VERTEBRAL OSTEOSYNTHESIS DEVICE COMPRISING SAME AND TOOL FOR ITS POSE
    FR3041246A1|2017-03-24|SURGICAL ASSEMBLY FOR ESTABLISHING A PROSTHESIS DISCALE
    同族专利:
    公开号 | 公开日
    FR3016510B1|2018-04-20|
    US20170000482A1|2017-01-05|
    WO2015107311A1|2015-07-23|
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    法律状态:
    2015-10-15| PLFP| Fee payment|Year of fee payment: 3 |
    2017-01-26| PLFP| Fee payment|Year of fee payment: 4 |
    2017-12-29| PLFP| Fee payment|Year of fee payment: 5 |
    2019-09-27| ST| Notification of lapse|Effective date: 20190906 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1450418|2014-01-20|
    FR1450418A|FR3016510B1|2014-01-20|2014-01-20|SURGICAL INSTRUMENT FOR POSTING A OSTEOSYNTHESIS CLIP|FR1450418A| FR3016510B1|2014-01-20|2014-01-20|SURGICAL INSTRUMENT FOR POSTING A OSTEOSYNTHESIS CLIP|
    US15/113,025| US20170000482A1|2014-01-20|2015-01-19|Surgical instrument for fitting an osteosynthesis clip|
    PCT/FR2015/050119| WO2015107311A1|2014-01-20|2015-01-19|Surgical instrument for fitting an osteosynthesis clip|
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