WO2019075609A1

WO2019075609A1 - Anastomat device for surgery

Info

Publication number: WO2019075609A1
Application number: PCT/CN2017/106350
Authority: WO
Inventors: 肖继里; 朱志远; 曾静雯; 潘高峰
Original assignee: 成都颐合恒瑞医疗科技有限公司
Priority date: 2017-10-16
Filing date: 2017-10-16
Publication date: 2019-04-25

Abstract

An anastomat device for surgery comprises a nail bin assembly (100), a cutting board assembly (200), and a driving assembly (300). The nail bin assembly (100) comprises a nail bin base (110) and a nail bin box (120) mounted on the nail bin base (110). The far end of the cutting board assembly (200) is distant from the nail bin assembly (100), and the near end of the cutting board assembly (200) is close to the near end of the nail bin box (120) and is pivotally connected to the nail bin base (110) so as to be rotatably disposed on the nail bin assembly (100). The driving assembly (300) is disposed on the nail bin base (110) and is close to the near ends of the nail bin box (120) and the cutting board assembly (200). A nail bin gasket (130) is mounted on the nail bin box (120), a cutting board gasket (230) is mounted on the cutting board assembly (200), and a cutting knife (310) is disposed on the driving assembly (300). When the cutting knife (310) moves from the near ends of the nail bin box (120) and the cutting board assembly (200) to the far ends of the nail bin box (120) and the cutting board assembly (200), the nail bin gasket (130) and the cutting board gasket (230) are cut and are separated from the nail bin box (120) and the cutting board assembly (200). This way helps to release the cutting board gasket (230) and the nail bin gasket (130), and the positioning is reliable, thereby improving the anastomosis efficiency.

Description

Surgical stapler device

【技术领域】[Technical Field]

The present invention relates to the field of medical devices, and in particular to a surgical stapler device.

【背景技术】【Background technique】

The stapler is a mechanically used device for replacing manual hand-stitching in medicine. Compared with the traditional hand-stitching technique, the mechanically-stitched stapler has the advantages of small tissue reaction, neatly arranged staples, and equal spacing. The problem of manual suturing and over-tightening and loosening is effectively avoided; at the same time, the mechanical sutured stapler is easy to operate and can greatly shorten the doctor's operation time.

With the widespread use of staplers, complications associated with staplers have become more and more important. Because the staples used in the stapler are usually made of titanium or other metal materials, the texture is hard, and the mechanical compatibility is poor when used for soft tissue suture, which is easy to cause mechanical damage to the fragile soft tissue, and prone to anastomotic leakage, bleeding, paralysis, etc. Therefore, in response to the above problems, various methods have been used clinically to reduce the occurrence of complications. Among them, it is currently the simplest and most effective to add a spacer between the stapler and the tissue to enhance the anastomotic site. One of the methods. The added gasket can cushion the patient's tissue, strengthen the tensile strength of the local tissue, improve the sealing performance of the anastomosis, prevent the occurrence of anastomotic leakage; reduce the separation of the staple to the tissue, and prevent the anastomosis The fracture and bleeding; and can balance the local pressure of the anastomosis, to avoid stress concentration and cause abnormal blood flow and anastomotic leakage and stenosis.

However, the inventors of the present application have found in the long-term research and development that the current anastomotic device with a gasket has a problem that the release structure of the gasket is complicated and the release reliability is low, and it is difficult to promote the application.

【发明内容】 [Summary of the Invention]

In order to at least partially solve the above problems, the present invention provides a surgical stapler device, wherein the stapler device comprises:

a cartridge assembly comprising a staple cartridge base and a staple cartridge mounted on the staple cartridge base, wherein a distal end of the staple cartridge cartridge is exposed outside the staple cartridge base, and the staple cartridge The proximal end of the crucible is mounted on the base of the staple cartridge;

a cutting block assembly having a distal end remote from the cartridge assembly and a proximal end proximate to a proximal end of the cartridge cartridge and pivotally coupled to the cartridge base for rotatably disposed on the cartridge assembly;

a drive assembly disposed on the staple cartridge base proximate the proximal end of the staple cartridge and the anvil assembly, wherein the drive assembly is separable from the staple cartridge base along the staple cartridge base a proximal end of the anvil assembly moves toward the staple cartridge and a distal end of the anvil assembly to conform the anvil assembly to the staple cartridge;

Wherein the staple cartridge is mounted with a staple cartridge gasket, the anvil plate assembly is mounted with a cutting block gasket, and the drive assembly is provided with a cutting knife, when the cutting knife is from the staple cartridge When the proximal end of the chopping block assembly moves toward the staple cartridge and the distal end of the anvil assembly, the staple cartridge spacer and the anvil pad are cut and respectively from the staple cartridge and the anvil assembly Get out of the way.

Wherein the staple cartridge and the cartridge assembly form a first receiving space, the staple cartridge is open with a first guiding path for the cutting knife to follow the nail along the first guiding path The proximal end of the cartridge moves toward its distal end, and the cartridge assembly further includes:

a first elastic fixing member disposed in the first receiving space and adjacent to a distal end of the staple cartridge to fix a distal end of the staple cartridge spacer;

An abutment disposed in the first receiving space and in contact with the cutting blade to move with movement of the cutting blade, wherein when the abutment moves to the first elastic fixing member The first elastic fixing member is deformed to release the distal end of the staple cartridge spacer;

a staple cartridge 匣 cantilevered on the staple cartridge for securing a proximal end of the staple cartridge spacer, wherein when the cutter moves to a position corresponding to the staple cartridge 匣 cantilever The proximal end of the staple cartridge spacer is detached from the staple cartridge cantilever to release the proximal end of the staple cartridge spacer.

Wherein the distal end of the staple cartridge is opened with a staple cartridge slot, and the distal end of the staple cartridge spacer is inserted into the first receiving space through the staple cartridge slot, and is subjected to the first elasticity The fixing member is fixed.

Wherein the proximal end of the staple cartridge gasket is provided with a staple cartridge fixing hole, and the proximal end of the staple cartridge gasket is sleeved on the staple cartridge crucible by the staple cartridge fixing hole to fix the nail The proximal end of the cartridge gasket.

Wherein the abutment includes an abutment body and a protruding structure, the protruding structure having a length of 1.2-5 times the length of the abutment body.

Wherein the cutting board assembly comprises:

Chopping shell

a cutting board body disposed on the anvil board shell to form a second receiving space with the anvil board shell, wherein the anvil board body is provided with a second guiding path, and the second guiding path is opposite to the first guiding path Corresponding for the cutting blade to move from the proximal end of the anvil assembly to the distal end thereof along the second guiding path, the anvil plate gasket being mounted on the anvil body;

a second elastic fixing member disposed in the second receiving space and disposed near a distal end of the anvil plate assembly to fix a distal end of the anvil plate spacer;

A locating pin is mounted on the anvil body and disposed proximate the proximal end of the anvil assembly to secure the proximal end of the anvil shim.

Wherein, the anvil plate gasket is made of a flexible material.

Wherein, the material of the chopping pad is one of a non-woven fabric, a knitted fabric, a needle punch, a woven fabric, a film or a pressed sheet.

Wherein, the thickness of the anvil plate gasket is not uniform.

Wherein, the thickness of the anvil plate gasket is uniform.

Wherein the cutting plate fixing hole is located at a proximal end of the anvil plate gasket, and the proximal end of the anvil plate gasket is sleeved on the positioning pin through the anvil plate fixing hole to fix the proximal end of the anvil plate gasket .

Wherein, the cutting plate fixing hole is a rectangular through hole.

Wherein, the positioning pin is L-shaped, including a vertical fixed end and a horizontal cantilever extending from the fixed end.

Wherein, the anvil pad includes an anvil pad auxiliary cutting line disposed at a center line of the chopping pad, and the horizontal cantilever extends in a direction perpendicular to a direction of the auxiliary pad cutting line of the anvil pad.

Wherein, the second elastic fixing member is one of a gasket spring, an elastic piece, a cylindrical spring or a torsion spring.

Wherein, the material of the second elastic fixing member is one of metal or plastic.

Wherein the second elastic fixing member is a gasket spring, comprising a pressure applying arm and a connecting end, wherein the connecting end is connected to the anvil shell, and the pressure applying arm is connected to the connecting end and A distal end for securing the anvil pad.

Wherein, the connecting end is fixed on the anvil shell by welding, riveting, bonding or snapping.

Wherein, the cutting board body is provided with an anvil plate slot, and the distal end of the anvil plate spacer is inserted into the second receiving space through the anvil plate slot, and is fixed by the second elastic fixing member.

Wherein the cutting blade comprises: an upper blade body portion, a lower blade body portion and a blade portion, wherein the blade portion is disposed between the upper blade body portion and the lower blade body portion, and the upper blade body portion a front end is provided with a protruding portion, the convex portion of the upper blade body portion abuts against the second elastic fixing member to force the second portion when the cutting blade is moved to the distal end of the anvil plate assembly The resilient fastener releases the distal end of the anvil pad.

The invention has the beneficial effects that: since the staple cartridge is mounted on the staple cartridge, the cutting block assembly is provided with a cutting block gasket, and the driving assembly is provided with a cutting knife when the cutting knife is When moving from the proximal end of the staple cartridge and the anvil assembly to the distal ends of the staple cartridge and the anvil assembly, the staple cartridge gasket and the anvil gasket are cut and respectively from the The staple cartridge and the anvil assembly are disengaged; since the anvil spacer and the staple cartridge gasket are respectively released from the anvil assembly and the staple cartridge during the movement of the cutter, different pads The releasing action of the sheet is implemented by the cutting knife, which reduces the intermediate transmission link, simplifies the linkage release process, makes the release structure simple, and has high release reliability, which is beneficial to the popularization and application of the surgical anastomosis device.

【附图说明】 [Description of the Drawings]

Figure 1 is an assembled view of a surgical stapler device of the present invention;

Figure 2 is an exploded perspective view of a surgical stapler device of the present invention;

Figure 3 is a schematic view showing the structure of the cutting blade 310 shown in Figure 2;

4 is a schematic structural view of the anvil holder 260 shown in FIG. 2;

Figure 5 is a schematic structural view of the staple cartridge 120 shown in Figure 2;

Figure 6 is a schematic view showing the structure of the staple cartridge spacer 130 shown in Figure 2;

Figure 7 is a cross-sectional view of the cartridge assembly 100 shown in Figure 1 along the longitudinal axis of symmetry;

Figure 8 is an enlarged plan view of the distal end of the cartridge assembly 100 shown in Figure 1;

Figure 9 is an enlarged plan view of the proximal end of the cartridge assembly 100 shown in Figure 1;

Figure 10 is a schematic illustration of the deformation of the staple cartridge gasket 130 shown in Figure 2;

Figure 11 is a schematic view showing the structure of the anvil body 220 shown in Figure 2;

Figure 12 is a schematic view showing the structure of the anvil body 250 shown in Figure 2;

Figure 13 is a schematic view showing the structure of the anvil shim 230 shown in Figure 2;

Figure 14 is another schematic structural view of the anvil shim 230 shown in Figure 2;

Figure 15 is a schematic view showing the assembly of the anvil plate 230 and the anvil body 220 shown in Figure 2;

Figure 16 is a partial enlarged view of the structure I shown in Figure 15;

Figure 17 is a cross-sectional view of the anvil assembly 200 shown in Figure 1 along the longitudinal axis of symmetry;

Figure 18 is an enlarged plan view of the distal end of the anvil assembly 200 shown in Figure 1;

Figure 19 is an enlarged plan view of the proximal end of the anvil assembly 200 shown in Figure 1;

Figure 20 is a schematic illustration of the deformation of the anvil shim 230 shown in Figure 2.

【具体实施方式】【Detailed ways】

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments, and combinations of different embodiments, which are obtained by those skilled in the art based on the embodiments of the present invention, without departing from the scope of the invention, are all within the scope of the invention. Further, in the following description of the present invention, the "proximal end" refers to the end closer to the user or the operator (ie, the surgeon or physician), and the "distal end" refers to the user. The farther end, however, is only for convenience of description and is not intended to limit the invention.

1 and FIG. 2, FIG. 1 is an assembled view of a surgical stapler device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the surgical stapling device shown in FIG. 1. As shown in FIGS. 1-2, the surgical stapling apparatus shown in the embodiment of the present invention includes a cartridge assembly 100, an anvil assembly 200, and a drive assembly 300. Wherein, during use, the drive assembly 300 squeezes the anvil assembly 200 to form the jaw assembly 200 with the staple cartridge assembly 100 and is rotationally closed to clamp the tissue to be cut.

Specifically, the cartridge assembly 100 includes a staple cartridge base 110 and a staple cartridge 120 mounted on the staple cartridge base 110, wherein a distal end of the staple cartridge 120 is exposed at the staple cartridge base 110 Additionally, the proximal end of the staple cartridge 120 is mounted on the staple cartridge base 110. In addition, the cartridge assembly 100 further includes a staple cartridge spacer 130 and a first resilient fastener 140.

The distal end of the chopping block assembly 200 is remote from the cartridge assembly 200, and its proximal end is adjacent the proximal end of the staple cartridge 120 and pivotally attached to the cartridge base 110 for rotatably disposed in the staple cartridge In addition, the chopping block assembly 200 further includes an anvil plate spacer 230, a second elastic fixing member 240, a positioning pin 250, an abutment 260, a plurality of staples (not shown) and a plurality of push pins ( The figure is not shown).

A drive assembly 300 is disposed on the staple cartridge base 110 proximate the proximal end of the staple cartridge 120 and the anvil assembly 200, wherein the drive assembly 300 is positionable along the staple cartridge base 110 The staple cartridge 120 and the proximal end of the anvil assembly 200 are moved toward the staple cartridge 120 and the distal end of the anvil assembly 200 to conform the anvil assembly 200 to the staple cartridge; The driving assembly 300 includes a cutting blade 310, a driving member (not shown) for driving the movement of the cutting blade 310, a cutter limiting block 320, and a guiding shaft 330, wherein the number of the guiding shafts 330 can be set to 1-3, in one embodiment, the number of the guide shafts 330 is one.

As shown in FIG. 2, the staple cartridge 120 is mounted with the staple cartridge spacer 130. The anvil plate spacer 230 is mounted on the anvil assembly 200, and the drive assembly 300 is provided with a cutting blade 310. When the cutting blade 310 moves from the proximal end of the staple cartridge 120 and the anvil assembly 200 toward the distal ends of the staple cartridge 120 and the anvil assembly 200, the staple cartridge spacers 230 and The anvil pad 130 is cut and detached from the staple cartridge 120 and the anvil assembly 200, respectively.

Please refer to FIG. 3 together, wherein FIG. 3 is a schematic structural view of the cutting blade 310 shown in FIG. 2. As shown in FIG. 3, the cutting blade 310 includes an upper blade body portion 311, a lower blade body portion 313, and a blade portion 312, wherein the blade portion 312 is disposed on the upper blade body portion 311 and the lower blade portion. Between the body portions 313, and the front end of the upper blade body portion 311 is provided with a convex portion, and the front end convex portion of the upper blade body portion 311 can apply pressure to the structure in contact therewith.

Please refer to FIG. 4 together, wherein FIG. 4 is a schematic structural view of the anvil holder 260 shown in FIG. 2. As shown in FIG. 4, the abutment seat 260 is disposed in the first receiving space and is in contact with the cutting blade 310 to move with the movement of the cutting blade 310; the abutment seat 260 Further comprising an abutment body 261 and a protruding structure 262 disposed on the abutment body 261, the anvil base 261 is in abutting connection with the cutting blade 310, and the distal end of the protruding structure 262 The height is smaller than the height of the proximal end of the protruding structure 262, and the distal end of the protruding structure 262 is used to apply pressure to the structure in contact therewith; further, the length of the protruding structure 262 is the resisting nail The length of the seat body 261 is 1.2-5 times. In one embodiment, the length of the protruding structure 262 is 1.5 times the length of the abutment body 261.

Please refer to FIG. 5 , wherein FIG. 5 is a schematic structural view of the staple cartridge 120 shown in FIG. 2 . As shown in FIG. 5, the staple cartridge 120 includes a staple cartridge cantilever 121, a first guide path 122 and a staple cartridge slot 123; in one embodiment, the staple cartridge 120 and the cartridge assembly 200 Forming a first receiving space (not shown), the first guiding path 122 opened on the staple cartridge 120 for the cutting blade 310 to follow the first guiding path 122 from the staple cartridge The proximal end of the ankle 120 is moved to its distal end.

Referring to FIG. 2, the cartridge assembly 100 further includes a first elastic fixing member 140 disposed in the first receiving space and adjacent to a distal end of the staple cartridge 120 to fix the staple cartridge pad. The distal end 131 of the sheet; the first elastic fixing member 140 may be a structure such as a gasket spring, an elastic piece, a cylindrical spring or a torsion spring, which can be decomposed into an independent energy storage portion and a pressing portion, which may be a metal material, such as Made of copper, aluminum, etc., or made of a plastic material, such as thermoplastic elastomer TPE, acrylic plastic PMMA, etc., the first elastic fixing member 140 can be made by using an elastic energy storage material. The distal end 131 of the staple cartridge gasket is reliably fastened, and the distal end 131 of the staple cartridge spacer is released by deforming the first elastic fixture 140 at the end of the movement of the cutter blade 310. Safe and reliable, and easy to operate.

In one embodiment, please refer to FIG. 6. FIG. 6 is a schematic structural view of the staple cartridge spacer 130 shown in FIG. 2. As shown in FIG. 6, the staple cartridge spacer 130 includes a distal end 131 of the staple cartridge spacer, a staple cartridge spacer auxiliary cutting line 132, a staple cartridge fixing aperture 133, and a staple cartridge spacer cut 134. The distal end 131 of the staple cartridge spacer is inserted into the first receiving space through the staple cartridge slot 123 and fixed by the first elastic fixing member 140; the proximal of the staple cartridge spacer 130 A staple cartridge fixing hole 133 is disposed at an end thereof, and a proximal end of the staple cartridge gasket 130 is sleeved on the staple cartridge 匣 cantilever 121 by the staple cartridge fixing hole 133 to fix the proximal portion of the cartridge shank 130 end.

Further, the material of the staple cartridge gasket 130 may be an implantable material such as a non-absorbable material, a synthetic absorbable material or a biomass absorbable material. These materials are safe and have no side effects, and are manufactured into a human body. An excellent choice of instruments; the staple cartridge spacer 130 is made of a flexible, thin material. The staple cartridge gasket 130 can be made of a material such as a nonwoven fabric, a knitted fabric, a needle punch, a woven fabric, a film or a pressed sheet, and can be made of a flexible material after the pressure of the force applying arm 141 is released. The distal end 131 of the staple cartridge spacer slides out of the staple cartridge slot 123 to achieve release of the distal end 131 of the staple cartridge spacer, avoiding the preparation of the staple cartridge spacer 130 with a non-flexible material. The problem that the distal end 131 of the staple cartridge spacer is difficult to release increases the reliability of the release of the distal end 131 of the staple cartridge spacer. In another embodiment, the staple cartridge spacer 130 may be made of one or more layers of the flexible material. Alternatively, the staple cartridge spacer 130 may be made of two layers of the flexible material; Further, the thickness of the staple cartridge spacer 130 may be uniform or non-uniform. In one embodiment, the thickness of the staple cartridge spacer 130 is not uniform, and the thickness of the proximal end of the staple cartridge spacer 130 is The thickness of the distal end 131 of the staple cartridge spacer is 1.5-3 times, and the proximal end of the staple cartridge spacer 130 is thickened to increase the strength of the proximal end of the staple cartridge spacer 130, thereby avoiding the thickness of the staple cartridge spacer 130. Too low causes problems such as cracking of the proximal end of the staple cartridge spacer 130 after the staple cartridge fixing hole 133 is disposed, thereby improving the quality and reliability of the product.

7-10, FIG. 7 is a cross-sectional view of the cartridge assembly 100 shown in FIG. 1 along the longitudinal axis of symmetry; FIG. 8 is an enlarged view of the distal end of the cartridge assembly 100 shown in FIG. 9 is an enlarged view of the proximal end of the cartridge assembly 100 shown in FIG. 1; FIG. 10 is a schematic view showing deformation of the cartridge spacer 130 shown in FIG. 2, and arrows in FIG. 10 indicate the cutter 310 Direction of movement. As shown in Figures 7-10, when the cutting blade 310 is moved to the proximal end of the staple cartridge 120, the cutting blade edge portion 312 is cut from the staple cartridge spacer auxiliary slit 134 through the After the staple cartridge fixing hole 133 continues to cut the staple cartridge spacer auxiliary cutting line 132, during the cutting process, the proximal end of the staple cartridge spacer 130 is deformed to move to both sides, and further from the staple cartridge The cantilever 121 is detached to release the proximal end of the staple cartridge spacer 130. When the cutting blade 310 is moved to the distal end of the cartridge assembly 200, the abutment 260 is moved to the first elastic fixture 140, and the protruding end 262 of the abutment is pressed against The urging arm 141 of the first elastic fixing member 140 is deformed to move away from the initial position (the position of the broken line in FIG. 10) toward the magazine base 110 to place the staple cartridge pad The distal end 131 of the piece is released.

In one embodiment, referring to FIG. 8 , the first elastic fixing member 140 is a gasket spring, and includes a biasing arm 141 and a fixed end 142 , wherein the fixed end 142 is coupled to the staple cartridge 120 . Above, the force applying arm 141 is coupled to the fixed end 142 and is used to fix the distal end 131 of the cartridge spacer. Specifically, the fixed end 142 is fixed on the distal end of the staple cartridge 120 by welding, riveting, bonding or snapping; in one embodiment, the fixed end 142 is fixed by welding. The distal end of the staple cartridge 120 is welded in such a manner that the fixed end 142 can be more firmly fixed to the distal end of the staple cartridge 120. When the force applying arm 141 is deformed by an external force, It is possible to avoid the safety hazard caused by the unreliable release of the distal end 131 of the cartridge spacer caused by the fixing of the fixed end 142, and in another embodiment, the fixed end 142 is fixed to the staple cartridge. On the base 110.

Referring to FIG. 2, in an embodiment, the anvil board assembly 200 includes: an anvil shell 210; an anvil body 220 disposed on the anvil shell 210 to form a second receiving space with the anvil shell 210 (not shown) Referring to FIG. 11, FIG. 11 is a schematic structural view of the anvil body 220 shown in FIG. 2. As shown in FIG. 11, the anvil body 220 includes an anvil body positioning hole 221, a second guiding path 222, and an anvil slot 223; the second guiding path 222 corresponds to the first guiding path 122 for the A cutting blade 310 is moved from a proximal end of the anvil assembly 200 to a distal end thereof along the second guiding path 222, and the anvil spacer 230 is mounted on the anvil body 220.

Please refer to FIG. 12 and FIG. 13, which is a schematic structural view of the anvil body 250 shown in FIG. 2. FIG. 13 is a schematic structural view of the anvil spacer 230 shown in FIG. As shown in Figures 12-13, the anvil shim 230 includes an anvil shim distal end 231, an anvil shim auxiliary cutting line 232, an anvil fixing hole 233, and an anvil auxiliary slit 234; the distal end 231 of the anvil shim passes The anvil slot 223 is inserted into the second receiving space and fixed by the second elastic fixing member 240. A locating pin 250 is mounted on the anvil body 220 and disposed proximate the proximal end of the anvil assembly 200 to secure a proximal end of the anvil shim 230. The locating pin 250 can be cylindrical or L-shaped. When the positioning pin 250 is L-shaped, the cutting board pad A sheet 230 is sleeved on the positioning pin 250 to fix the proximal end of the anvil shim 230. Specifically, the positioning pin 250 includes a vertical fixed end 251 and a horizontal cantilever 252. The vertical end 251 passes through the anvil fixing hole 233 and the anvil body positioning hole 221, and the horizontal cantilever 252 supports the same. The proximal end of the anvil shim 230 is secured to the proximal end of the anvil shim 230.

Optionally, the anvil fixing hole 233 may be a rectangular hole corresponding to the positioning pin 250 (please refer to FIG. 13 ) or a rectangular through hole (refer to FIG. 14 ), and the cutting plate fixing hole 233 adopts a rectangular through hole. Not only the production molding is facilitated, but also the cutting board fixing hole 233 is quickly detached from the positioning pin 250 and the anvil body 220 during the cutting process, which improves the reliability of the release process of the anvil plate gasket 230.

Optionally, the extending direction of the horizontal cantilever 252 may be parallel or perpendicular to the direction of the anvil shim auxiliary cutting line 232; in one embodiment, please refer to FIGS. 12 and 13, the extension of the horizontal cantilever 252 The direction is parallel to the direction of the anvil shim auxiliary cutting line 232 and corresponds to the position of the rectangular hole mounted on the anvil fixing hole 233; in another embodiment, Referring to Figures 15 and 16, the horizontal cantilever 252 extends in a direction perpendicular to the direction of the anvil shim auxiliary cutting line 232 and away from the anvil shim auxiliary cutting line 232 such that the horizontal cantilever 252 forms a pair The lateral limit of the anvil shim 230 avoids the constraint that the anvil shim 230 is disengaged from the positioning pin 250 when it is finely adjusted front and rear, and the horizontal cantilever 252 faces the anvil shim 230 during the cutting process. The resistance is small to facilitate the release of the proximal end of the chopping pad 230.

Similarly, the staple cartridge fixing hole 133 may have the same shape as the anvil fixing hole 233 (please refer to FIG. 13 and FIG. 14), so that the staple cartridge fixing hole 133 is conveniently sleeved in the staple cartridge. The detachment of the cantilever arm 121 from the cantilever arm 121 on the cantilever arm 121 and during the cutting process improves the reliability of the process of fixing and releasing the magazine cartridge 130.

Further, the material of the chopping pad 230 may be a non-absorbable material, a synthetic absorbable material or a bio-absorbable material, and the like, which can be implanted into the human body. An excellent choice; the chopping block gasket 230 is made of a flexible thin material, which may be a non-woven fabric, a knitted fabric, a needle punch, a woven fabric, a film or a pressed sheet, and the cutting board gasket 230 is prepared from a flexible material. After the pressure of the pressure applying arm 241 is released, the distal end 231 of the anvil pad can be slid out from the anvil slot 223 to release the distal end 231 of the anvil pad. The problem of difficult release of the distal end 231 of the anvil pad by the non-flexible material preparation of the chopping pad 230 is avoided, improving the reliability of the release of the distal end 231 of the chopping pad. In another embodiment, the anvil shim 230 may be made of one or more layers of the flexible material. Alternatively, the anvil shim 230 may be made of two layers of the flexible material; further The thickness of the anvil shim 230 may be uniform or non-uniform. In one embodiment, the thickness of the anvil shim 230 is not uniform, and the thickness of the proximal end of the anvil shim 230 is the anvil shim. The thickness of the distal end 231 is 1.5-3 times. The proximal end of the anvil shim 230 can be increased to increase the strength of the proximal end of the anvil shim 230, and the thickness of the shim shim 230 is too low to cause the shim shim 230. When the cutting block fixing hole 233 is opened at the proximal end, problems such as cracking occur, and the quality and reliability of the product are improved.

Please refer to FIG. 17. FIG. 17 is a cross-sectional view of the anvil assembly 200 shown in FIG. 1 along a longitudinal axis of symmetry. The second elastic fixture 240 is disposed in the second receiving space and adjacent to the anvil assembly 200. The distal end is disposed to fix the distal end 231 of the anvil pad; the second elastic fixing member 240 may be a spacer spring, an elastic piece, a cylindrical spring or a torsion spring, etc., which can be decomposed into independent energy storage springs and The first elastic fixing member 140 and the second elastic fixing member 240 may be replaced with each other under the pressed structure and under suitable mounting positions and operating conditions. In one embodiment, the second elastic fixing member 240 may be made of a metal material such as copper, aluminum, or the like, or may be made of a plastic material such as a thermoplastic elastomer TPE, an acrylic plastic PMMA, or the like. Elastic Energy Storage Material The second resilient fastener 240 can ensure reliable fastening of the distal end 231 of the anvil pad while enabling the energy storage at the end of the cutting blade 310 The elastic fixing member is deformed to release the distal end 131 of the anvil pad, which is not only safe and reliable, but also easy to operate.

In one embodiment, the second elastic fixing member 240 is a gasket spring, and includes a pressure applying arm 241 and a connecting end 242, wherein the connecting end 242 is connected to the anvil shell 210, the pressure A force applying arm 241 is coupled to the connecting end 242 and is used to secure the distal end 231 of the anvil shim. Specifically, the connecting end 242 is fixed on the anvil shell 210 by welding, riveting, bonding or snapping; in one embodiment, the connecting end 242 is fixed to the anvil shell by welding. In the 210, the way of welding can fix the connecting end 242 to the anvil shell 210 more firmly. When the pressure applying arm 241 is deformed by an external force, the fixing end 242 can be prevented from being fixed firmly. The distal end 231 of the anvil pad cannot be reliably released.

Please refer to FIG. 18 to FIG. 20. FIG. 18 is an enlarged view of the distal end of the anvil assembly 200 shown in FIG. 1. FIG. 19 is an enlarged view of the proximal end of the anvil assembly 200 shown in FIG. 1. FIG. A schematic view of the illustrated cutting block gasket 230 is shown. During the movement of the cutting blade 310, when the cutting blade 310 is moved to the proximal end of the anvil plate assembly 200, the cutting blade edge portion 312 is cut from the anvil pad auxiliary slit 234, passing through After the cutting board fixing hole 233 is continued, the cutting board spacer auxiliary cutting line 232 is continuously cut. During the cutting process, the proximal end of the cutting board spacer 230 is deformed to move to both sides, and then falls off from the fixing pin 250. To release the proximal end of the chopping pad 230. When the cutting blade 310 is moved to the distal end of the cartridge assembly 200, the front end convex portion of the upper blade body portion 311 is moved to the second elastic fixing member 240, and the upper blade body portion 311 The front end projecting portion presses the pressure applying arm 241 of the second elastic fixing member 240 to force the pressure applying arm 241 to deform away from the initial position (the dotted line position in FIG. 20) toward the The chopping block 210 moves in the direction, which itself changes from the L-shape of the initial position to a straight shape, thereby releasing the distal end 131 of the chopping pad.

In summary, the distal end of the anvil plate spacer 230 and the distal end of the staple cartridge spacer 130 are respectively inserted into the anvil plate slot 223 and the staple cartridge slot 123 to be fastened. The distal end 231 of the chopping block spacer and the distal end 131 of the staple cartridge spacer avoid the risk of flanging caused by tissue scraping, and can be naturally smoothed according to the direction of movement of the stapler jaw contact tissue. The risk of wrinkling after the jaws are clamped is reduced, further improving the quality of the anvil plate spacer 230 and the staple cartridge spacer 130 to the tissue. At the same time, the contour shape and size of the anvil shim 230 and the staple cartridge shim 130 are similar to and slightly smaller than the attached tissue contact surfaces of the staple cartridge 120 and the anvil body 220, thereby avoiding In use, there is a risk that the edge of the gasket will be in unnecessary contact with the tissue, resulting in folding or moving. In addition, the pressing elastic members (the first elastic fixing member 140 and the second elastic fixing member 240) in the present embodiment are all made of medical stainless steel material, and the connection manner with the staple cartridge 120 and the anvil shell 210 is not Additional material is added so there is no biosafety risk due to poor filtrate.

The abutment pad distal end 231 and the distal end 131 of the staple cartridge spacer are positioned by pressing, and the force applying arm structure of the first elastic fixing member 140 is appropriately designed due to the rational design of the biasing arm structure of the elastic member 140. And a biasing arm 241) of the second elastic fixture 240 to obtain a suitable pre-stress for the anvil shim 230 and the staple cartridge shim 130, and at the stapler jaws (the cartridge assembly 100 and The multiple repeated clamping and resetting actions of the chopping block assembly 200) do not affect the pre-stress of the pressing elastic element, ensuring that the chopping pad 230 and the staple cartridge spacer 130 during this action Reliable positioning.

At the same time, the fixing and releasing action of the cutting blade spacer distal end 231 and the distal end 131 of the cartridge housing are performed by the same component, which reduces the intermediate transmission link, simplifies the interlocking release process, and applies the arm to the elastic component. The rationalized design of the pressed position makes the force-applying side a labor-saving lever, which greatly reduces the direct force of the user, improves the ergonomics of the system, and releases the movement more quickly, labor-saving and higher reliability.

On the other hand, since the anvil holder 260 is not reset with the cutting blade 310, it will remain at the distal end of the staple cartridge 120 after the completion of the firing, and always maintain the force on the first elastic fixing member 140. The urging arm 241 of the second elastic fixing member 240 has been plastically deformed due to the pressing force of the front end convex portion of the upper blade body portion 311 of the dicing blade 310, and is not freely repositionable. It is achieved that both the anvil shim 230 and the staple cartridge shim 130 are fully released after the firing of the cutting blade 310 is completed.

In addition, the pressing elastic member in this embodiment does not cause any change in the outer shape of the stapler during the movement of positioning and releasing the anvil plate spacer 230 and the staple cartridge spacer 130, and there is no partial structure and human tissue. Contact safety hazards that cause secondary damage. The chopping block gasket 230 and the staple cartridge spacer 130 are fixed to the corresponding position of the stapler jaw by pressing the elastic element before use, and the user only needs to follow the existing standard stapler to complete the solution. The effective use of the device does not require additional operating procedures, which reduces the learning time required for the use of new equipment, and is convenient and quick to use; this embodiment borrows a large number of existing standard stapler components, the process is mature and stable, and the added pad The components of the sheet fastening system are simple in structure and convenient in assembly, and can be mass-produced by conventional processing methods, and the overall process difficulty of the system is low, and the manufacturing cost is low.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A surgical stapler device, characterized in that the stapler device comprises:

a cartridge assembly comprising a staple cartridge base and a staple cartridge mounted on the staple cartridge base, wherein a distal end of the staple cartridge cartridge is exposed outside the staple cartridge base, and the staple cartridge The proximal end of the crucible is mounted on the base of the staple cartridge;

a cutting block assembly having a distal end remote from the cartridge assembly and a proximal end proximate to a proximal end of the cartridge cartridge and pivotally coupled to the cartridge base for rotatably disposed on the cartridge assembly;

a drive assembly disposed on the staple cartridge base proximate the proximal end of the staple cartridge and the anvil assembly, wherein the drive assembly is separable from the staple cartridge base along the staple cartridge base a proximal end of the anvil assembly moves toward the staple cartridge and a distal end of the anvil assembly to conform the anvil assembly to the staple cartridge;

Wherein the staple cartridge is mounted with a staple cartridge gasket, the anvil plate assembly is mounted with a cutting block gasket, and the drive assembly is provided with a cutting knife, when the cutting knife is from the staple cartridge When the proximal end of the chopping block assembly moves toward the staple cartridge and the distal end of the anvil assembly, the staple cartridge spacer and the anvil pad are cut and respectively from the staple cartridge and the anvil assembly Get out of the way.
The stapler device according to claim 1, wherein said staple cartridge and said cartridge assembly constitute a first receiving space, and said staple cartridge has a first guiding path for said cutting The knife moves from the proximal end of the staple cartridge to the distal end thereof along the first guiding path, and the cartridge assembly further comprises:

a first elastic fixing member disposed in the first receiving space and adjacent to a distal end of the staple cartridge to fix a distal end of the staple cartridge spacer;

An abutment disposed in the first receiving space and in contact with the cutting blade to move with movement of the cutting blade, wherein when the abutment moves to the first elastic fixing member The first elastic fixing member is deformed to release the distal end of the staple cartridge spacer;

a staple cartridge 匣 cantilevered on the staple cartridge for securing a proximal end of the staple cartridge spacer, wherein when the cutter moves to a position corresponding to the staple cartridge 匣 cantilever The proximal end of the staple cartridge spacer is detached from the staple cartridge cantilever to release the proximal end of the staple cartridge spacer.
The stapler device according to claim 2, wherein a distal end of the staple cartridge is provided with a staple cartridge slot, and a distal end of the staple cartridge spacer is inserted through the staple cartridge slot The first accommodation space is fixed by the first elastic fixing member.
The stapler device according to claim 2, wherein a proximal end of the staple cartridge spacer is provided with a staple cartridge fixing hole, and a proximal end of the staple cartridge spacer is sleeved through the staple cartridge fixing hole A proximal end of the staple cartridge spacer is secured to the staple cartridge arm.
The stapler device according to claim 2, wherein the abutment base comprises an anvil base and a protruding structure, the protruding structure having a length of 1.2-5 times the length of the anvil base .
The stapler device of claim 2 wherein said cutting block assembly comprises:

Chopping shell

a cutting board body disposed on the anvil board shell to form a second receiving space with the anvil board shell, wherein the anvil board body is provided with a second guiding path, and the second guiding path is opposite to the first guiding path Corresponding for the cutting blade to move from the proximal end of the anvil assembly to the distal end thereof along the second guiding path, the anvil plate gasket being mounted on the anvil body;

a second elastic fixing member disposed in the second receiving space and disposed near a distal end of the anvil plate assembly to fix a distal end of the anvil plate spacer;

A locating pin is mounted on the anvil body and disposed proximate the proximal end of the anvil assembly to secure the proximal end of the anvil shim.
The stapler device according to claim 6, wherein the anvil pad is made of a flexible material.
The stapler device according to claim 6, wherein the material of the anvil pad is one of a nonwoven fabric, a knitted fabric, a needle punch, a woven fabric, a film, or a pressed sheet.
The stapler device according to claim 6, wherein the thickness of the anvil pad is not uniform.
The stapler device according to claim 6, wherein the thickness of the anvil pad is uniform.
The stapler device according to claim 6, wherein the anvil plate spacer is provided with an anvil fixing hole, and the anvil fixing hole is disposed at a proximal end of the anvil pad, the chopping pad The proximal end is sleeved on the positioning pin through the anvil fixing hole to fix the proximal end of the anvil pad.
The stapler device according to claim 10, wherein the anvil plate fixing hole is a rectangular through hole.
The stapler device of claim 6 wherein said locating pin is L-shaped and includes a vertical fixed end and a horizontal cantilever extending from said fixed end.
The stapler device according to claim 13, wherein said anvil pad further comprises an anvil pad auxiliary cutting line disposed at a center line of said anvil pad, said horizontal cantilever extending in a direction The anvil shim assists the direction of the cutting line to be perpendicular.
The stapler device according to claim 13, wherein said anvil pad further comprises an anvil pad auxiliary cutting line disposed at a center line of said anvil pad, said horizontal cantilever extending in a direction The anvil shim assists the direction of the cutting lines in parallel.
The stapler device according to claim 6, wherein the second elastic fixing member is one of a gasket spring, an elastic piece, a cylindrical spring or a torsion spring.
The stapler device according to claim 16, wherein said second elastic fixing member is a gasket spring comprising a pressure applying arm and a connecting end, wherein said connecting end is coupled to said anvil shell The pressure applying arm is coupled to the connecting end and configured to fix a distal end of the anvil pad.
The stapler device according to claim 17, wherein said connecting end is fixed to said anvil shell by welding, riveting, bonding or snapping.
The stapler device according to claim 17, wherein the anvil plate body is provided with an anvil plate slot, and the distal end of the anvil plate spacer is inserted into the second receiving space through the anvil plate slot, And fixed by the second elastic fixing member.
The stapler device according to claim 6, wherein the cutting blade comprises: an upper blade body portion, a lower blade body portion, and a blade portion, wherein the blade portion is disposed at the upper blade portion and the lower portion Between the body portions, and a front end of the upper blade body portion is provided with a convex portion, and when the cutting blade is moved to the distal end of the anvil plate assembly, the convex portion of the upper blade body portion is in contact with The second elastic fixing member is forcing the second elastic fixing member to release the distal end of the anvil plate spacer.