CN211213310U

CN211213310U - Nail anvil assembly and loading unit of surgical stapler and surgical stapler

Info

Publication number: CN211213310U
Application number: CN201921851967.5U
Authority: CN
Inventors: 张海红
Original assignee: Reach Surgical Inc
Current assignee: Reach Surgical Inc
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-08-11
Anticipated expiration: 2029-10-30

Abstract

The utility model relates to the technical field of medical equipment, concretely relates to nail anvil subassembly of surgery stitching instrument, include: the nail anvil comprises a nail anvil body, wherein a plurality of nail grooves are formed in the surface of the nail anvil body, each nail groove comprises a pair of nail recess seats, and the nail recesses are respectively formed in the nail grooves; the muscle sets up between the nail recess, protrusion nail anvil surface, when the nail leg of sewing up the nail impeld respectively to in the nail recess of sewing up the nail groove, the nail leg quilt the both sides portion of muscle leads respectively and the both sides of muscle are bent. The utility model discloses the effectual solution leads to the unable nail groove counterpoint with the sewing up of nail anvil of nail leg because sliding of tissue, leads to the bad problem of actual sewing up nail take-up. The utility model also provides a loading unit and surgical stitching ware for surgical stitching ware.

Description

Nail anvil assembly and loading unit of surgical stapler and surgical stapler

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to nail anvil subassembly and loading unit and surgery stitching instrument of surgery stitching instrument.

Background

With the development of medicine and product research and development, more and more multifunctional staple products are applied to clinic, the application range relates to various fields of gastrointestinal surgery, hepatobiliary surgery, thoracic surgery, urology surgery, gynecology and the like, and the multifunctional staple products become one of the indispensable tools of doctors, so the surgical stapler becomes an indispensable auxiliary medical instrument in the process of suturing human tissues. The application of the surgical suture instrument has the advantages of less bleeding in the operation, shorter operation time, capability of reducing manual operation errors, infection avoidance, quick functional recovery after the operation and the like.

In surgical procedures for stapling human tissue, a surgical stapler, including an anvil having a staple pocket defined therein, is often used. In use, staples are pushed out of the staple cartridge by the staple pusher and through a section of tissue to be stapled, and the staple slots receive and progressively bend the legs of the staples into a closed position to form a B-shape. However, when the jaws are closed and fired, due to the slippage of tissues, the legs of the staples often slip and cannot be aligned with the staple grooves of the staple anvil, so that the actual staples are badly formed, the suturing is not good, and the clinical bleeding and blood leakage can still occur.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art because the slippage of tissue leads to the staple leg can't counterpoint with the sewing nail groove of nail anvil, leads to the bad defect of actual nail take shape to a nail anvil subassembly and loading unit and the surgery stitching instrument of surgery stitching instrument are provided.

In order to solve the technical problem, the utility model provides a nail anvil component of surgical stitching instrument, include: the nail anvil comprises a nail anvil body, wherein a plurality of nail grooves are formed in the surface of the nail anvil body, each nail groove comprises a pair of nail recess seats, and the nail recesses are respectively formed in the nail grooves; the muscle sets up between the nail recess, protrusion nail anvil surface, when the nail leg of sewing up the nail impeld respectively to in the nail recess of sewing up the nail groove, the nail leg by both sides portion of muscle 120 leads respectively and the both sides of muscle are bent.

Further, the linear distance between the anvil surface and the top of the rib is greater than 0mm and less than the closure gap.

Further, the maximum width of the projection of the part of the rib, which is positioned above the anvil surface, on the anvil surface is less than or equal to 0.37 mm.

Further, the staple pocket includes a smooth curved surface to facilitate advancement of the staple legs.

Further, the closing gap is less than or equal to 2 mm.

Further, the two staple pockets are located on the same horizontal line.

Further, two sewing nail recesses are distributed in a mirror symmetry mode.

The utility model also provides a loading unit for the surgical suturing device, which comprises the nail anvil component of the surgical suturing device.

The utility model also provides a surgical stitching instrument, which comprises the nail anvil component of the surgical stitching instrument.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a pair of nail anvil subassembly of surgery stitching instrument, include: the nail anvil comprises a nail anvil body, wherein a plurality of nail grooves are formed in the surface of the nail anvil body, each nail groove comprises a pair of nail recess seats, and the nail recesses are respectively formed in the nail grooves; the muscle sets up between the nail recess, protrusion nail anvil surface, when the nail leg of sewing up the nail impeld respectively to in the nail recess of sewing up the nail groove, the nail leg quilt the both sides portion of muscle leads respectively and the both sides of muscle are bent. When sewing up the tissue, because the setting of muscle, the muscle has played the effect of fixed tissue, enters into the in-process of sewing up the nail groove at the nail leg simultaneously, has played the effect of direction, has restricted the home range of nail leg for the nail leg can be complete with the alignment of sewing up the nail groove, improved the accuracy of sewing up the nail, thereby guaranteed sutural precision, the effectual condition of still can appearing clinical oozing blood and leaking blood after having avoided sewing up.

2. The utility model provides a pair of nail anvil subassembly of surgery stitching instrument, sew up the nail saddle and include smooth cambered surface, so that the nail leg impels. The smooth arc facilitates the advancement of the staple legs, reducing the force required to be applied to advance the staple legs into the staple pockets.

3. The utility model provides a pair of nail anvil subassembly of surgery stitching instrument, two sew the nail recess and be mirror symmetry and distribute. The two suturing nail recesses are arranged in a mirror symmetry mode, so that the suturing nails can be conveniently inserted, and meanwhile, the machining of the suturing nail recesses is also facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a staple anvil arrangement according to the present invention;

FIG. 2 is a schematic view of the structure of the staple magazine of FIG. 1;

FIG. 3 is a top view of FIG. 2;

FIG. 4A is a schematic structural view of a staple contacting a staple pocket;

FIG. 4B is a schematic view of the staple in a bending process;

FIG. 4C is a schematic view of the staple after it has been bent;

FIG. 5 is a schematic structural view of a loading unit;

FIG. 6 is a schematic structural view of the staple anvil block;

FIG. 7 is a schematic structural view of the surgical stapler;

description of reference numerals:

1-a loading unit; 11-a first anvil assembly; 12-a first magazine assembly; 10-a staple anvil block; 100-anvil surface; 110-a staple slot; 110a, 110 b-staple pockets; 120-ribs; 150-staples; 150a, 150 b-legs; 2-a surgical stapler; 21-an end effector; 22-an elongated body; 23-a handle portion; 210-a second anvil assembly; 220-a second magazine assembly; 231-a handle housing; 232-a handle; 233-closure trigger; 234-firing trigger;

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

In various embodiments of the present invention, "distal" refers to the end of the surgical instrument that is distal from the user when the surgical instrument is manipulated, and "proximal" refers to the end of the surgical instrument that is proximal to the user when the surgical instrument is manipulated.

An embodiment of the present invention provides a nail anvil assembly for a surgical stapler, including a nail anvil block 10 having a plurality of staple slots 110 disposed on a nail anvil surface 100 of the nail anvil block 10. FIG. 1 is a top view of the staple pockets and staple pockets disposed on the anvil surface of the anvil seat of the anvil assembly. Specifically, as shown in FIG. 1, a plurality of staple pockets 110 are provided on the anvil surface 100 of the anvil 10, the staple pockets 110 including pairs of

staple pockets

110a, 110b corresponding to each staple to be closed. To more clearly describe the staple pockets 110 and

staple pockets

110a, 110b described in this embodiment, FIGS. 2-3 illustrate the configuration of one pair of

staple pockets

110a, 110b on the anvil surface 100. Specifically, as shown in fig. 2 and 3, staple pocket 110 includes staple pockets 110a for receiving and closing distal legs 150a of staples 150 and staple pockets 110b for receiving and closing proximal legs 150b of staples 150 (see fig. 4A-C). Further, a rib 120 is disposed on the staple slot 110, and the rib 120 is disposed between the staple pocket 110a and the staple pocket 110b and protrudes from the anvil surface 100. When the distal leg 150a and the proximal leg 150B of the staple 150 are respectively pushed into the staple recesses 110a, 110B of the staple slot 110, the distal leg 150a and the proximal leg 150B of the staple 150 are respectively bent along the staple recesses 110a, 110B in the direction of the rib 120 (as shown by arrow a in fig. 4B), and guided by the two side portions of the rib 120 and then bent into a B shape.

The embodiment of the utility model provides a nail anvil component, muscle 120 shaping is at the middle part of suture nail groove 110 to protrusion in nail anvil surface 100, be higher than nail anvil surface 100 promptly. Preferably, the linear distance between the anvil surface 100 and the top of the ribs 120 is greater than 0mm and less than the closure gap of the surgical stapler. The closure gap is the distance between the anvil surface 100 and the cartridge surface when the surgical stapler jaws are closed. Typically, the closure gap of a surgical stapler is set to 2mm or less. Preferably, the maximum width of the projection of the rib 120 on the anvil surface 100 at the upper part of the anvil surface 100 is less than or equal to 0.37 mm.

The staple forming process of the present embodiment is shown in fig. 4A-C, specifically, when the staple is sewn, the staple is pushed out of the surface of the staple cartridge by the staple pusher (not shown) and passes through the tissue to be sewn, and the staple recess 110a and the staple recess 110b of the staple slot 110 receive the distal leg 150a and the proximal leg 150b of the staple 150, respectively, as shown in fig. 4A. As the staple pusher pushes the staples further out of the staple cartridge surface, the distal leg 150a and the proximal leg 150B of the staple 150 will progressively bend along the staple pocket 110a and the staple pocket 110B, respectively (as shown in fig. 4B); due to the arrangement of the rib 120, when the distal leg 150a and the proximal leg 150B of the staple 150 meet the rib 120 during bending, the distal leg 150a and the proximal leg 150B are guided by two side portions of the rib 120 respectively, bent at two sides thereof, and finally closed into a B-shape, as shown in fig. 4C.

Due to the arrangement of the ribs 120, on one hand, when the tissue is sutured, the tissue fixing function is achieved, on the other hand, when the far-end nail leg 150a and the near-end nail leg 150B of the suturing nail 150 are bent gradually along the suturing nail recess 110a and the suturing nail recess 110B respectively, the guiding function is achieved, the moving range of the far-end nail leg 150a and the near-end nail leg 150B of the suturing nail 150 is limited, and the phenomenon that the tissue slides towards the far end in the closing process to drive the suturing nail legs to slide is prevented, so that one or more of the nail legs cannot be clasped and bent at a preset position and penetrate out of the suturing nail recess, and the suturing nail is badly formed, namely the suturing nail cannot be clasped into a.

In the embodiment of the present invention, the height of the rib 120 is greater than 0mm and smaller than the closing gap of the surgical stapler, i.e. the rib 120 protrudes from the surface 100 of the nail anvil to play a guiding role in the forming process of the suturing nail 150, and the height of the rib 120 is lower than the closing gap, so as to avoid the situation of interference with the surface of the nail cartridge and influence the closing of the surgical stapler.

In this embodiment, the staple pockets 110a, 110b preferably have a smooth curved surface to facilitate advancement of the staple 150 to form the staple, to reduce the force required to advance the staple 150 into the staple channel 110 for forming.

In this embodiment, the two

staple pockets

110a, 110b are located on the same horizontal line. The two

staple pockets

110a, 110b are arranged in mirror symmetry. Positioning the two

staple pockets

110a, 110b on the same horizontal line facilitates the formation of staples 150 along the

staple pockets

110a, 110b of the staple channel 110.

The anvil assembly of the surgical stapler of the present invention can be adapted to various types of surgical staplers, such as a surgical stapler with or without a knife slot or having any other structural feature, for example, an endoscopic surgical stapler, a loading unit for an endoscopic surgical stapler, a linear stapler, a tubular stapler, and the like.

For example, as shown in FIGS. 5 and 6, a loading unit 1 for a surgical stapler includes a first anvil assembly 11 and a first cartridge assembly 12, according to an embodiment of the present invention, the first anvil assembly 11 is pivotally mounted on the first cartridge assembly 12. First anvil subassembly 11 includes staple anvil 10, be provided with a plurality of the utility model embodiment on the anvil surface 100 of staple anvil 10 staple nail groove 110 and

sewing nail recess

110a, 110b to and muscle 120, muscle 120 sets up between sewing nail recess 110a and sewing nail recess 110b, and protrudes anvil surface 100.

The present invention also provides a surgical stapler 2, as shown in fig. 7, the surgical stapler 2 comprising an end effector 21, an elongated body 22, and a handle portion 23, wherein a proximal end of the elongated body 22 is connected to the handle portion 23 and a distal end of the elongated body 22 is connected to the end effector 21. The end effector 21 includes a second anvil assembly 210 and a second magazine assembly 220, the second anvil assembly 210 being pivotally mounted to the second magazine assembly 220; the handle portion 23 includes a handle housing 231, a handle 232, a closure trigger 233, and a firing trigger 234, wherein the closure trigger 233 is adapted to drive the second anvil assembly 210 to pivot relative to the second staple cartridge assembly 220 via a closure drive assembly (not shown) to effect closure and opening of the end effector 21; the firing trigger 234 is adapted to fire staples disposed within the second staple cartridge assembly 220 to effect stapling of tissue after the end effector 21 is closed. Further, a second anvil assembly 210 includes the anvil 10, with a plurality of staple slots 110 and

staple pockets

110a, 110b disposed on the anvil surface 100 of the anvil 10, and a rib 120 disposed between the

staple pockets

110a, 110b and protruding from the anvil surface 100, the rib 120.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. An anvil assembly for a surgical stapler, comprising: a staple anvil (10) having a plurality of staple pockets (110) disposed on an anvil surface (100) of the staple anvil (10), characterized in that:

the staple magazine (110) includes a pair of staple pockets (110a, 110b) respectively formed in the staple magazine (110); and the rib (120) is arranged between the staple recesses (110a and 110b) and protrudes out of the anvil surface (100), and when the legs (150a and 150b) of the staple (150) are respectively pushed into the staple recesses (110a and 110b) of the staple groove (110), the legs (150a and 150b) are respectively guided by two side parts of the rib (120) and two sides of the rib (120) are bent.

2. The anvil assembly of the surgical stapler of claim 1, wherein a linear distance between the anvil surface (100) and a top of the rib (120) is greater than 0mm and less than a closure gap.

3. The anvil assembly of the surgical stapler according to claim 2, wherein a maximum width of a projection of the rib (120) on the anvil surface (100) at an upper portion of the anvil surface (100) is less than or equal to 0.37 mm.

4. The anvil assembly of the surgical stapler of claim 1, wherein the staple pockets (110a, 110b) include a smooth curved surface to facilitate advancement of the staple legs (150a, 150 b).

5. The anvil assembly of the surgical stapler of claim 2, wherein the closure gap is less than or equal to 2 mm.

6. The anvil assembly of a surgical stapler according to claim 1, wherein the two staple pockets (110a, 110b) are located on the same horizontal line.

7. The anvil assembly of the surgical stapler of claim 1, wherein two of the staple pockets (110a, 110b) are arranged in mirror symmetry.

8. A loading unit for a surgical stapler, comprising an anvil assembly of the surgical stapler of any one of claims 1-7.

9. A surgical stapler, comprising an anvil assembly of the surgical stapler of any one of claims 1-7.