巴西专利BR112015005971B1 SURGICAL INSTRUMENT ACTUATOR

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专利摘要:
improved surgical instrument actuator. the present invention, in the field of surgical instruments, provides an improved surgical instrument actuator, including an attached cartridge set and an anvil set, and a unit set that controls the conversion between the opening and closing state of the set of cartridge and the anvil assembly. due to the design in combination of multiple components with different functions, the present invention reduces the difficulty of processing the element, improves the flexural deformation resistance of the actuator chuck, improves the product performance, reduces the risk of instrument failures and improves the clinical effect of the instrument.
公开号:BR112015005971B1
申请号:R112015005971-6
申请日:2013-08-22
公开日:2021-04-13
发明作者:Honglin Nie；Xiliang Zhang；Anhua Li
申请人:Shanghai Yisi Medical Technology Co., Ltd；
IPC主号:

专利说明:

Application field
[1] The present invention relates to a surgical instrument, in particular, to a surgical stapler, in particular, to a surgical instrument actuator. Background technology
[2] The principle of a surgical stapler is that the two corresponding jaws (often referred to as the anvil and cartridge assembly) are closed to secure the tissue and then pull the metal staples from the stapler cartridge to form sutures. of fabric together. In some staplers, it is also equipped with a cutter to cut the sutured tissues.
[3] The stapler with the above function includes an actuator, the intermediate connector, and the controller. The actuator consists of the anvil set, the cartridge set and the drive set. The anvil set includes a nail molding surface, the nail molding surface contains multi-line nail groove, the nail groove is used for forming a metal clamp. The cartridge assembly generally includes cartridge, staples, nail puller block, sliding nail puller block and cartridge holder, the top surface of the cartridge is the contact surface of the fabric, the cartridge is installed in the cartridge holder. The proximal end of the anvil assembly is movably connected with the proximal end of the cartridge assembly, and can be switched between the open state and the closed state. The drive assembly is connected to the drive mechanism to convert the action of the discharge trigger to the action of closing, stacking and opening the actuator. In general, the anvil assembly and the cartridge holder still include a longitudinal groove respectively, said longitudinal groove being used to receive the drive assembly for passing. When the drive assembly moves to the distal end of the actuator through said longitudinal groove, it will drive the anvil and anvil cartridge assembly from the open state to the closed state, and drive the nail pull block and the slide pull nail block to push out of the clamp and form in the nail groove of the nail molding surface. In general, the drive set also includes a cutter, used to cut fabric on the nail line in several lines after the fabric is stapled. The controller is used to manually control the operating instrument, usually including a fixed handle, a movable discharge trigger connected in relation to the fixed handle, a drive mechanism that transfers the action of the discharge trigger to the actuator. The distal end of the intermediate connector is movably connected with the distal end of the controller, and is connected with the proximal end of the actuator, the intermediate connector constitutes a connection channel, to transfer the action of the discharge trigger to the actuator.
[4] The Endo GIA Universal cutting stapler from the American Tyco Healthcare company (later renamed Covidien) and the Echelon cutting stapler from the American company Ethicon Endo-Surgery are the representative products to achieve the above functions. The above products have been sold for many years, and are also proven by the market to have good clinical results. When the anvil and cartridge assembly is closed, the blue cartridge actuator of the said product compresses the natural thickness of human tissues (such as stomach tissue, lung tissue, intestinal tissue, etc.) from 5 mm -8 mm to the closed thickness of 1.5 mm. From the point of view of product characteristics, the closed thickness of the tissue from the proximal to the distal end of the anvil must be uniform in order to ensure the high formed after the staple is formed is consistent, the quality of the sutured tissue of the staple is stable , the suture effect can be guaranteed. Thus, the anvil assembly needs to have high flexural strength. In the manufacturing process of the anvil assembly, there will be a large number of displacement of the material from the nail groove when the mold is formed by stamping, objectively the material of the anvil assembly needs to have good fluidity, it is easy to produce large plastic deformation scale. The plastic demand and the flexural strength demand of the anvil set for the material are contradictory. The technical solutions adopted by the Endo GIA Universal cutting stapler and Echelon GIA solve these contradictions better, but there is still a need for improvement, for example: the flexural strength of the Endo GIA Universal cutting stapler anvil set it is also not high enough in any clinical application, the processing difficulty is high; The flexural strength of the Echelon GIA cutting stapler is sufficient, but the processing process is complicated and expensive.
[5] For example, in the US5,865,361 patent, Tyco Healthcare describes the Endo GIA Universal cutting stapler anvil assembly. Refer to the patent description of US5,865,361, combining with the adopted design of the products actually sold on the market, the anvil anvil set consists of welding the anvil piece with a rear cover plate. The cavity formed between the upper surface of the rear cover plate and the anvil piece is a sliding space of the turret pin, the role of the rear cover plate is to prevent the fabric from being pinched by the turret pin. The back cover plate is made by stamping the thin sheet of stainless steel with a thickness of 0.2 mm - 0.3 mm, the anvil piece is made by stamping the stainless steel sheet with a thickness of 1 mm. These two parts are made of 304 stainless steel material, which can be increased by heat treatment, can produce significant hardening in the processing process. Many nail grooves formed by the cold stamping process distribute under the bottom surface of the anvil piece. For anvil piece with specifications of the Endo GIA Universal 45mm anvil line, stamping (cold stone block) to 6 lines x 11 nail grooves = 66 nail grooves on a 45mmx9mm surface, the depth of the nail groove is about 0.5 mm. The depth of the nail groove reaches half the thickness of the material of the anvil piece, which results in severe hardening on the surface of the material that the anvil piece contacts with the upper part of the mold drift, which makes the nail groove difficult. to form more, also increase mold drift wear, reduce mold life, which leads to increased fluctuation in the dimensions of the mold, less accuracy, and ultimately affect the quality of clamp formation.
[6] In response to these nail groove formation difficulties, speculate that when the Endo GIA Universal cutting stapler manufactures anvil piece, the anvil piece uses 304 annealed stainless steel plate in order to minimize initial hardness. of the materials to improve the precision of nail groove formation and the service life of the mold. However, the flexural strength of the anvil part made of annealed stainless steel 304 is reduced, thus resulting in the flexural strength of the anvil assembly is reduced, so that when the product is applied to staple and cut some thick fabrics , severe curved deformation in the anvil assembly occurs after the anvil and cartridge assembly is closed, the consistency of the compression thickness of the tight tissues in the jaw cannot be guaranteed, especially since the tissue at the distal end of the jaw is not fully compressed, the closure effect is poor, so the fabric is easy to spill to the distal end of the jaw when cutting, resulting in the width of the fabric after stapling is greater than the initial compression length of the fabric, in some cases, result in the need to increase the number of surgical staple cartridges, increasing medical costs; When it is severe, the formation of the clamp is poor. Content of the invention
[7] For deficiencies in existing technology, the object of this invention is to provide a surgical instrument actuator and the stapler including said actuator. According to the instrument of this invention (that is, stapler) it can hold the fabric, to reach at least one row of staple formation; Under certain application conditions, you can also cut the fabric, cut the fabric between the staple lines in several rows.
[8] In accordance with an aspect of the present invention, a surgical instrument actuator is provided, including a connected cartridge assembly and an anvil assembly, and a drive assembly that controls the conversion between the opening and closing state of the assembly of the cartridge and the anvil set, said anvil set includes anvil piece, the anvil holder, said anvil piece is configured on the inner side surface, said anvil piece is made through cold stamping processing stainless steel plate, the thickness of the stainless steel plate is less than the maximum depth formed of the nail groove of said anvil piece, said anvil piece is configured with the first guide groove, said anvil support is configured with the second guide groove, said first guide groove and said second guide groove are arranged along the same axis, said drive assembly it slides under the guide of said first guide groove and said second guide groove.
[9] Preferably, the anvil piece is made by processing the stainless steel sheet drawing process.
[10] Preferably, the thickness of the stainless steel sheet is 0.1 0.4 mm.
[11] Preferably, the thickness of the stainless steel sheet is 0.2 0.3mm.
[12] Preferably, the tensile strength of the material used from the anvil holder is greater than the tensile strength of the stainless steel sheet.
[13] Preferably, the anvil support is made by processing in combination with one or more processes in the forging process, powder metallurgy molding process, casting process or mechanical cutting processing process. Among them, the powder metallurgy process includes powder injection molding technology (MIM, Metal Injection Molding) and powder pressing technology.
[14] Preferably, it also includes the rear cover plate that is configured on the outer side surface of said anvil support, the outer side surface of said anvil support includes a guide surface, there is a cavity between the guide surfaces of the rear cover plate and anvil support, the drive assembly moves in the cavity along the guide surface.
[15] Preferably, the respective components of the said anvil assembly are connected in a unitary structure by means of welding and / or mechanical riveting.
[16] Preferably, the nail grooves of said anvil piece are arranged selectively in parallel lines in parallel rows or curves.
[17] Preferably, the nail grooves of said anvil piece are arranged in 4 rows or 6 rows.
[18] In accordance with another aspect of the present invention, a surgical instrument is still provided, including the controller, the intermediate connector, the actuator, the actuator, the intermediate connector and the controller are connected in turn.
[19] In comparison with the present technology, the present invention has the following beneficial effects:
[20] The anvil set consists of anvil piece and anvil holder made of different materials, thus satisfying both the plastic demand and the flexural demand of the anvil set to the material, in which the piece anvil adopts thin stainless steel plate, to form by stretching process, in order to improve the difficulty of forming the nail groove, provide nail groove with high precision; The holder adopts the structure, material and processing process program that can provide high bending performance to provide higher bending performance for the entire anvil assembly;
[21] The tensile strength of the material used from the anvil support is greater than the tensile strength of the material used from the anvil piece, so the anvil support provides the greatest tensile strength and flexural strength, so that the anvil piece is easier to form by stretching, to overcome the problem that the flexural strength of the anvil assembly in the existing instrument design is insufficient so as to cause the tissue to spill and poor staple formation;
[22] The anvil set consists of multiple components having different functions, increasing the uniformity of the thickness of the tight tissue when the actuator is closed, compared to the existing product design program, the closing effect of the actuator is better, the manufacturing cost is lower, the clinical risk is lower.
[23] When the thickness of the stainless steel plate of the processed anvil piece t is less than the maximum forming depth of the nail groove h, so that the cold stamping process that processes the processed anvil piece can use the drawing stamping process to replace the stamping process when forming a nail groove in the thick plate, so as to improve the accuracy of the nail groove dimensions. Instruction of attached drawings
[24] By reading and referring to the detailed description of the following attached drawings for realized non-limiting examples, other characteristics, objects and advantages of the present invention will be more evident:
[25] Figure 1 is a schematic view of the structure of the surgical instrument according to the first example of the present invention;
[26] Figure 2 is the schematic view of the explosion structure of the surgical instrument shown in Figure 1;
[27] Figure 3 is the schematic view of the partially enlarged structure of the actuator of the surgical instrument shown in Figure 1;
[28] Figure 4 is the schematic front view of the anvil assembly of the surgical instrument shown in Figure 1;
[29] Figure 5 is a schematic view of the three-dimensional structure of the anvil set of the surgical instrument shown in Figure 1;
[30] Figure 6 is a schematic view of the structure of the anvil part of the surgical instrument shown in Figure 1;
[31] Figure 7 is a schematic view of partial cross-sectional structure of the anvil part of the surgical instrument shown in Figure 1 in A-A of Figure 6;
[32] Figure 8 is the schematic view of the structure of the anvil of the surgical instrument shown in Figure 1;
[33] Figure 9 is a schematic view of the front structure of the whisker support in that shown in Figure 8;
[34] Figure 10 is the schematic view of the cross-sectional structure of the anvil support shown in Figure 9 in B-B;
[35] Figure 11 is a schematic view of the structure of the anvil support of the surgical instrument according to the second example of the present invention;
[36] Figure 12 is a schematic view of the cross-sectional structure of the anvil support shown in Figure 11 in D-D; Specific embodiment
[37] In the following, with reference to specific realized examples, the present invention will be described in detail. The following realized examples will help those skilled in the art to understand the present invention more, but not to limit the invention in any way. It should be noted that for ordinary technicians in the field, without departing from the concept premise of the present invention, but also a number of variations and modifications can be made. These belong to the scope of protection of the present invention.
[38] The present invention is applied to the actuator of the surgical instrument, using the special combination of parts, the combination of materials and processing process program for the manufacture of the actuator, to obtain an anvil set with better integrated flexural strength.
[39] Figures 1 to 10 show the schematic view of the surgical instrument according to the first example of the present invention. Specifically, in this example performed, with reference to Figures 1-2, said surgical instrument includes the controller (300), the intermediate connector (200), the actuator (100), in which the F actuator (100), the intermediate connector ( 200), the controller (300) are connected in turn.
[40] Controller 300 generally includes the first fixed handle 301, the second fixed handle 302, a movable discharge trigger 303, the replacement spring for the discharge trigger 310 and a transmission lever that transfers the rotation action of the discharge trigger 303 to intermediate connector 200, and the movement transmission and conversion mechanism that guides it along longitudinal linear movement. Shown in Figure 2, the movement transmission and conversion mechanism includes pull teeth 313, pull teeth pin 311, pull teeth spring 312, rack 304. Rack 304 is reciprocally mounted on the inner guide on the first fixed handle 301 , in the second fixed handle 302, the pull teeth 313 are rotatably mounted on one end of the discharge trigger 303 by the pull tooth pin 311, the pull tooth spring 312 keeps the pull teeth 313 always tending to mesh with the rack 304. When operating the discharge trigger 303, the rotational movement of the discharge trigger 303 transfers to rack 304 by the pull tooth 313, the drive rack 304 makes linear to distal movement. Controller 300 generally also includes a rack reset mechanism used to replace rack 304 after the instrument has completed function. Shown in Figure 2, said rack replacement mechanism includes the first replacement cap 305, the second replacement cap 306, the replacement pin 308, the replacement spring of the rack 309, the release tooth release sheet 307 When rack 304, due to the operation of the discharge trigger 303, stops from the starting position, the operator pulls the first replacement cap 305, the second replacement cap 306 to the proximal end by the replacement pin 308, first drive the pull-tooth release sheet 307 to move, leading to pull tooth 313 to separate and the mesh position with the rack 304; When continuing to pull the first replacement cap 305, the second replacement cap 306, the replacement pin 308 continues to pull back until the replacement pin contacts rigidly with rack 304, at this point, when continuing to pull the first replacement cap. replacement 305, the second replacement cap 306 for the proximal end, rack 304 will accompany the replacement pin 308 along the proximal movement until restarted.
[41] The intermediate connector 200 is connected to the distal end of the controller 300. In the example of a surgical stapler shown in Figure 2, the intermediate connector 200 includes: the first rotating connector 211, the second rotating connector 212, the transmission lever 204 , the drum 205, the drum sleeve 206, the first nail box inner tube 202, the second nail box inner tube 203, the nail box sleeve 201 and other components. The drum 205 and the first inner tube of the nail box 202, the second inner tube of the nail box 203 are coaxial with the axis, the direction of the axis constitutes the said longitudinal direction of this realized example. The proximal end of the drum 205 is movably connected with the distal end of the controller 300 through the first rotary connector 211, the second rotary connector 212. The transmission lever 204 is arranged in the cavity of the drum 205 and the first inner box tube of nails 202, of the second inner tube of the nail box 203, and can move freely and longitudinally in the cavity of the drum 205 and of the first inner tube of the nail box 202, of the second inner tube of the nail box 203. The distal end of the the transmission lever 204 is connected to the proximal end of the drive assembly, the proximal end of the transmission lever 204 is connected to the rack 304, the transmission lever 204 can transfer the longitudinal movement of the rack 304 to the drive assembly 109.
[42] In the performed surgical stapler example shown in Figure 2, the intermediate connector 200 also includes the load insurance mechanism that can be uninstalled with the actuator 100, including: the load replacement spring 207, the load insurance block load 208, the load limited block 209. After the intermediate connector is loaded with the actuator 100, under the force of the load replacement spring 207, the load safe block 208 prevents relative rotation and unloading on the actuator 100 and in the intermediate connector 200.
[43] Referring to Figures 2-3, Actuator 100 consists mainly of anvil assembly 1001, cartridge assembly 1002 and drive assembly 1003. Cartridge assembly 1002 generally includes cartridge 104, several clamps 105, several blocks nail puller 106, nail puller slide 108 and cartridge holder 107, the top surface of cartridge 104 is the tissue contact surface, cartridge 104 is mounted on cartridge holder 107. The anvil assembly 1001 includes anvil piece 103 and anvil holder 102.
[44] As shown in Figure 6-7, in this example performed, the anvil piece 103 includes a first guide groove 1031 and several nail grooves 1032. The drive assembly 1003 can be slidably guided in the first guide groove 1031. The surface of the anvil piece 103 towards the side of the tight tissue contains several lines of nail grooves 1032, when the staple 105 is guided to move to the anvil piece 103, the staple 105 enters the nail groove 1032 and forms in B-shape or similar B-shape under the curved guide inside nail slot 1032.
[45] In this example, the anvil piece 103 is made by processing the stainless steel sheet drawing process, the thickness of the stainless steel sheet t is less than the maximum formation depth of the nail groove. 1032 of the anvil piece 103 h, namely: t <h. In practice, for clamp 105 with a diameter of 0.2 mm-0.25 mm, in order to ensure that it can provide adequate guide performance when clamp 105 forms, reaching the maximum depth of formation of the nail groove 1032 h is usually 0.4 mm-0.6 mm; For the clamp with the diameter of 0.25 mm-0.35 mm clamp 105, to ensure that it can provide the proper guide performance when the clamp 105 forms, reaching the maximum depth of formation of the nail groove 1032 h is generally 0.45mm-0.7mm. When the thickness of the stainless steel sheet that processes the 103 t large piece is less than the maximum depth of formation of the nail groove 1032 h. Preferably, the cold embossing process that processes the anvil piece can use the embossing stretch process to replace the embossing process when forming 1032 nail groove in the thick plate.
[46] With reference to Figure 4, Figures 8-10, the anvil holder 102 includes the inner side surface 1022, the outer side surface 1023 and the second guide groove 1021, the anvil piece 103 is arranged on the side surface interior 1022 of the anvil holder 102, the first guide groove 1031 of the anvil piece 103 and the second guide groove 1021 of the anvil holder 102 are arranged along the same Z axis.
[47] As shown in Figure 4, the Z axis is the straight line. At this point, the nail grooves 1032 of the anvil piece 103 are arranged selectively in parallel lines in rows. The number of parallel lines in rows includes 2 rows -8 rows, preferably 6 rows or 4 rows. In a variable example of this example carried out, the difference with the example shown in Figure 4 is that in this variable example, the Z axis is the curve, at this time, the nail grooves 1032 of the anvil piece 103 are arranged selectively in curves in rows . Row curves can be multiple concentric arcs, or they can be multiple parallel asymptotes, or other types of curves in combination with more curves. The number of curves in rows includes 2 rows -8 rows, preferably 6 rows or 4 rows. In order to be arranged selectively in rows, that is, between two rows of adjacent nail grooves 1032, the position of nail groove 1032 is irregular.
[48] To ensure that the anvil piece 103 and the anvil holder 102 are positioned precisely, as shown in Figures 4 to 6, the positioning hole 1033 is configured in the anvil piece 103, the positioning pin 1024 is configured on the anvil holder 102, the positioning hole 1033 on the anvil piece 103 and the positioning pin 1024 on the anvil holder 102 are positioned accordingly.
[49] Anvil support 102 is processed by the forging process. In the variable example of this example performed, the anvil holder 102 can also be processed by the powder metallurgy process, or mechanical cutting process.
[50] Anvil assembly 1001 also includes the rear cover cover 101. The rear cover cover is arranged on the outer side surface of the anvil holder 102.
[51] In a preferred example of this example, among the various components of the anvil assembly, they can be connected as a whole by welding, mechanical riveting, or a combination of both. Among them, the welding mode includes laser welding, resistance welding, fusion welding and other modes.
[52] In the other preferred example of this example, anvil piece 103 uses 304 stainless steel material, anvil holder 102 uses stainless steel material 420, stainless steel material 420 can obtain tensile strength not less than 1300MPa after adequate heat treatment, and after H1 / 2 heat treatment, the tensile strength of 304 stainless steel material is generally not greater than 1050MPa.
[53] Figure 11 and Figure 12 show a schematic view of the surgical instrument according to the second example of the present invention. Technicians can understand that the second example performed in Figure 12 is a variable example from the first example performed shown in Figure 1. Specifically, the difference between this example performed with the first example performed in Figure 1 is that, in this performed example, the cover back cover is omitted, more specifically, as shown in Figure 11-12, anvil assembly 1001 includes anvil piece 103 and anvil holder 102, does not include the back cover cover. Anvil holder 102 includes the inner side surface 1022, the outer side surface 1023 and the second guide groove 1021, the anvil piece 103 is arranged on the inner side surface 1022 of the anvil holder 102, the first guide groove 1031 of the anvil piece 103 and the second guide groove 1021 of the anvil holder 102 are arranged along the same Z axis.
[54] The specific examples of the present invention are described above. It is to be understood that the present invention is not limited to the specific methods of realization above, technicians in the field can make various changes or modifications within the scope of the rights requirements, this does not affect the essence of the present invention.

权利要求:
Claims (10)
[0001]
1. SURGICAL INSTRUMENT ACTUATOR, including a connected cartridge assembly (1002) and anvil assembly (1001), and a drive assembly (1003) adapted to control the conversion between the opening and closing state of the cartridge assembly ( 1002) and the anvil set (1001), wherein said anvil set (1001) includes an anvil piece (103) and an anvil holder (102), said anvil piece (103) is configured in a inner side surface (1022) of said anvil support (102), said anvil piece (103) is made from a plate, the thickness of the plate is less than a maximum depth formed by a nail groove (1032 ) of said anvil piece (103), said anvil piece (103) is configured with a first guide groove (1031), said anvil support (102) is configured with a second guide groove (1021), said first guide groove (1031) and said second guide groove (1021) are arranged along the same axis, said drive assembly (1003) is adapted to slide under a guide of said first guide groove (1031) and said second guide groove (1021) characterized in that said anvil piece (103 ) be made by cold stamping the said plate, said plate is stainless steel, and the tensile strength of the material used from the anvil support (102) is greater than the tensile strength of said steel plate stainless.
[0002]
2. SURGICAL INSTRUMENT ACTUATOR, according to claim 1, characterized in that the anvil piece (103) is made through the drawing process of stainless steel sheet stamping.
[0003]
3. SURGICAL INSTRUMENT ACTUATOR, according to claim 1, characterized in that the thickness of the stainless steel sheet is 0.1-0.4 mm.
[0004]
4. SURGICAL INSTRUMENT ACTUATOR, according to claim 3, characterized in that the thickness of the stainless steel sheet is 0.2-0.3 mm.
[0005]
5. SURGICAL INSTRUMENT ACTUATOR, according to claim 1, characterized in that said anvil support (102) is made by processing in combination with one or more forging processes, powder metallurgy molding process, casting or mechanical cutting process.
[0006]
6. SURGICAL INSTRUMENT ACTUATOR, according to claim 1, characterized in that it includes the rear cover plate (101) which is configured on the outer side surface (1023) of said anvil support (102), the outer side surface (1023) ) of said anvil support (102) includes a guide surface, a cavity exists between the rear cover plate (101) and the guide surface of the anvil support (102), and the drive assembly (1003) moves into the cavity along the guide surface.
[0007]
7. SURGICAL INSTRUMENT ACTUATOR, according to either of claims 1 or 6, characterized in that the respective components of said anvil assembly (1001) are connected in a unitary structure by means of welding and / or mechanical riveting.
[0008]
8. SURGICAL INSTRUMENT ACTUATOR, according to claim 1, characterized in that the nail grooves (1032) of said anvil piece (103) are arranged selectively in parallel lines in parallel rows or curves.
[0009]
9. SURGICAL INSTRUMENT ACTUATOR, according to claim 8, characterized in that the nail grooves (1032) of said anvil piece (103) are arranged in 4 rows or 6 rows.
[0010]
10. SURGICAL APPARATUS, which includes a controller (300), an intermediate connector (200) and an actuator (100), in which said actuator (100), the intermediate connector (200) and the controller (300) are connected in this order, characterized in that the actuator (100) is an actuator (100) as defined in claim 1.

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法律状态:
2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

2019-11-26| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

2021-03-23| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2021-04-13| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 22/08/2013, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

CN201210349356.7A|CN102885641B|2012-09-18|2012-09-18|Improved performer for surgical instruments|

CN201210349356.7|2012-09-18|

PCT/CN2013/082025|WO2014044108A1|2012-09-18|2013-08-22|Improved actuator of surgical instrument|

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