WO2021253649A1

WO2021253649A1 - Transverse intraluminal stapler having compact structure

Info

Publication number: WO2021253649A1
Application number: PCT/CN2020/114282
Authority: WO
Inventors: 向长林; 施俭; 陆坚
Original assignee: 苏州贝诺医疗器械有限公司
Priority date: 2020-06-18
Filing date: 2020-09-09
Publication date: 2021-12-23
Also published as: CN111700668A; CN111700668B

Abstract

A transverse intraluminal stapler having a compact structure, comprising an end effector (1), a connecting outer tube (3), and a driving assembly (2) at least partially disposed in the connecting outer tube (3). The end effector (1) comprises a staple cartridge housing (11) and a positioning staple (16). The driving assembly (2) comprises a driving housing (21) used for driving the staple cartridge housing (11). The staple cartridge housing (11) is disposed in a staple cartridge accommodating cavity (211) of the driving housing (21). The staple cartridge accommodating cavity (211) is provided with an opening allowing for axial installation of the staple cartridge housing (11) along the central axis of the connecting outer tube (3). One end of the positioning staple (16) is disposed in the staple cartridge accommodating cavity (211). The staple cartridge housing (11) is provided with a positioning staple hole (111) allowing the positioning staple (16) to pass through. The other end of the positioning staple (16) is connected to a positioning staple driving mechanism. This transverse intraluminal stapler improves the structure and installation mode of an original transverse stapler, so that the assembly is more compact, and the radial size of the transverse stapler is effectively reduced. Therefore, the transverse stapler can enter an endoscopic surgery channel having a small inner diameter, and can thus suitable for intraluminal surgery.

Description

A transverse intracavity suture device with compact structure

Technical field

The invention relates to a medical device, in particular to a transverse intracavity suture device with a compact structure.

Background technique

The transverse cutting anastomosis/suturing device is mainly used for the reconstruction of the digestive tract where the surgical field is difficult to be exposed and the creation of the anastomosis and the closure of the stump or incision during the resection of the organ. In the transverse cutting stapler in the prior art, the positioning pin is set on the staple cartridge, and the longitudinal installation perpendicular to the central axis of the stapler needs to be verified along the staple cartridge during installation. The staple cartridge installation position needs to be additionally provided with a transmission mechanism for connecting to the staple cartridge. The positioning pin is matched so that the driving mechanism can drive the positioning needle. For example, the application number 201510357816.4 discloses a surgical cutting and stapling device capable of suturing first and then cutting. The driving mechanism includes a locking handle that is rotatably connected with the handle assembly and a rear end. The connecting rod rotatably connected with the locking handle, the fourth sliding groove formed on the central rod, the fourth rotating shaft slidably arranged in the fourth sliding groove, the rear end and the front end of the connecting rod pass through the fourth A component rack that is rotatably connected with the rotating shaft and can drive the center rod to slide forward with the rotation of the locking handle. The front end of the component rack is respectively connected with the housing of the staple cartridge component and the positioning pin. When the locking handle is in the positioning position , The driving mechanism and the staple cartridge assembly slide forward as a whole, and the assembly frame pushes the positioning pin to slide forward so as to push the positioning pin out of the housing, and the positioning is targeted to the tissue. Compared with the transverse cutting stapler, the transverse stapler has one less cutter. The process of driving the staples to suture the human tissues is roughly the same. It is mainly used for surgical operations that do not require cutting but require sutures.

Lateral cutting anastomoses/suturing devices are often used in open surgery. Open surgery has a better field of vision, but it has disadvantages such as large wounds and slow recovery. The traditional method of laparoscopic surgery is to make three small incisions in the patient's body, insert a pipe-like working channel each, and all subsequent operations will be performed through these three pipes; and then use a special lengthened surgical instrument to complete the same as open surgery under television monitoring The steps to achieve the same surgical effect, compared with open surgery, has greater advantages, but according to the prior art due to the limitation of the structure and installation method, the staple cartridge provided with the positioning needle has a larger longitudinal direction In order to be able to stably install the staple cartridge on the end effector, an additional fixing mechanism is required to prevent it from falling off. Therefore, it is not suitable for small-sized laparoscopic surgery channels.

Therefore, it is necessary to provide a stapler with a compact structure design to solve the above technical problems.

Summary of the invention

The technical scheme of the present invention is realized as follows:

The present application provides a transverse intraluminal stapler with a compact structure, including an end effector, a connecting outer tube, and a drive assembly at least partially disposed in the connecting outer tube. The end effector includes a staple cartridge housing and a positioning needle ；

The drive assembly includes a drive housing for driving a nail cartridge housing; the nail cartridge housing is arranged in a nail cartridge accommodating cavity of the drive housing, and the nail cartridge accommodating cavity is provided with an opening for the nails. The cartridge housing is installed along the axial direction of the central axis of the connecting outer tube, one end of the positioning pin is arranged in the staple cartridge accommodating cavity, and the staple cartridge is provided with a positioning pin hole for the positioning pin to pass through , The other end of the positioning pin is connected with the positioning pin driving mechanism.

Further, the drive assembly further includes a drive push rod, a hollow drive link is connected to the proximal end of the drive housing, and the drive push rod sequentially passes through the inner cavity of the hollow drive link and the inner cavity of the drive housing.

Further, the drive housing further includes a drive cavity communicating with the staple cartridge accommodating cavity, the drive push rod includes a drive end portion and a drive connection portion, the drive end portion is slidably arranged in the drive cavity, the The driving end part passes through the driving cavity and then enters the staple cartridge accommodating cavity to contact and push the staple push block arranged in the staple cartridge housing.

Further, an empty staple cartridge protector is provided on the drive housing, and before the suture staples are pushed, the locking end of the empty staple cartridge protector biases against one side of the staple block, When the driving push rod drives the nail push block to push up the suture nails and after the driving push rod is reset, the locking end is inserted into the drive push rod and the push nail block by a biasing force. In the gap between.

Further, the empty staple cartridge protector further includes an elastic biasing member, a pivoting part, and a fixed connecting part; the empty staple cartridge protector rotates relative to the drive housing through the pivoting part, and the lock The stop end is connected to the pivoting portion through a fixed connecting portion;

One end of the elastic biasing member deformably abuts with the drive housing, and the other end is relatively fixed to the locking end, so as to provide the locking end with a side abutting against the nail push block Of bias.

Further, the staple cartridge housing is provided with an opening slot, and the locking end of the empty staple cartridge protector passes through the opening slot and biases against one side of the nail push block.

Further, the end effector further includes an anvil, and a bottom surface of the anvil is perpendicular to the central axis of the connecting outer tube and corresponds to the opening of the staple cartridge accommodating cavity.

Further, the staple cartridge housing includes a nail ejection portion and an installation portion, the installation portion is matched with the staple cartridge accommodating cavity; the width of the nail ejection portion is greater than the opening width of the staple cartridge accommodating cavity .

Further, a clamping protrusion is provided on the mounting portion, and a clamping groove matched with the clamping protrusion is provided in the staple cartridge accommodating cavity.

Further, the end effector further includes an anvil connector connected to one end of the anvil and perpendicular to the anvil, and the other end of the anvil connector is fixedly connected to the connecting outer tube.

Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art:

(1) The structural installation method of the original transverse suture device is improved, the assembly is more compact, and the radial size of the transverse suture device is effectively reduced, so that it can enter a channel with a small inner diameter, so that it can be used in the cavity Operation;

(2) Change the original method of pre-installing the positioning needle of the transverse suture device in the staple cartridge, directly pre-install the positioning needle on the transmission mechanism, and realize the assembly of the positioning needle by changing the installation method of the staple cartridge. In the prior art, the positioning needle in the present application is more stable and safer, and simple to assemble, and does not require the alignment of the transmission mechanism.

Description of the drawings

Figure 1 is a top view of the overall appearance of an embodiment of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the positioning pin of the embodiment of the present invention after the positioning is completed;

Figure 3 is a schematic diagram of the structure of the first splicing housing and the staple cartridge housing in the driving housing according to the embodiment of the present invention

Fig. 4 is a schematic view of the structure of the anvil connector and the drive housing in the embodiment of the present invention;

Figure 5 is a partial cross-sectional view of an embodiment of the present invention when viewed from above;

Fig. 6 is a schematic cross-sectional view of an embodiment of the present invention when viewed from above;

Fig. 7 is a schematic structural diagram of the connection between the drive housing and the hollow drive connecting rod in the embodiment of the present application;

Fig. 8 is a schematic diagram of the structure of the second splicing shell in the embodiment of the present application;

Fig. 9 is a schematic structural diagram of a first splicing shell according to an embodiment of the present invention;

Fig. 10 is a schematic structural diagram of the connection between the second splicing housing and the hollow drive connecting rod in the embodiment of the present application;

Figure 11 is a schematic diagram of the structure of the anvil connector, the drive housing, and the circumscribed pipe in accordance with the embodiment of the present invention;

Fig. 12 is a schematic diagram of the structure of the anvil connector and the drive housing in accordance with the embodiment of the present invention;

Fig. 13 is a schematic structural diagram of a hollow drive connecting rod installed with a driving push rod in an embodiment of the application;

Fig. 14 is a schematic diagram of the structure of a driving push rod according to an embodiment of the application;

Figure 15 is a schematic structural diagram of a staple cartridge housing according to an embodiment of the present invention;

Figure 16 is a schematic structural diagram of a staple cartridge housing according to an embodiment of the present invention;

Fig. 17 is a schematic structural diagram of an empty staple cartridge protector according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

As shown in Figures 1-17, this embodiment provides a transverse intracavitary stapler with a compact structure. The surgical stapler includes an end effector 1, a drive assembly 2, a connecting outer tube 3, and a handle mechanism 4, which drive The assembly 2 is used to drive the end effector 1 for stitching. The drive assembly 2 is at least partially arranged in the connecting outer tube 3, the end actuator is arranged at one end of the connecting outer tube 4, and the handle mechanism 4 is arranged at the other end of the end effector. At one end, the handle mechanism 4 is drivingly connected with the drive assembly 2. For details, please refer to the connection method of the stapler drive structure in the prior art. By controlling the handle mechanism 4 by the operator, the drive assembly 2 can be controlled to actuate multiple actions, thereby controlling the end The actuator 1 performs the final stitching operation.

The drive assembly 2 includes a drive housing 21; the staple cartridge housing 11 is arranged in the staple cartridge accommodating cavity 211 of the drive housing 21 and is arranged corresponding to the lower surface of the anvil 14. The drive housing 21 is used to drive the staple cartridge housing 11 Move to the anvil 14; so as to clamp the tissue before suture;

The end effector 1 includes a staple cartridge housing 11, a staple 12, a staple push block 13, and an anvil 14. The upper surface of the staple cartridge housing 11 is provided with a staple outlet 15 for the staples 12 to push out; for the staple block 13 The suture nail 12 is pushed upward to push the suture nail 12 out of the nail exit hole 15 and bend after encountering the anvil 14 to suture the human body. In this embodiment, it is a stapler without a cutter. In other embodiments, a cutter may also be provided. The cutter and the staple block 13 move upward together to complete the suture while cutting the tissue.

In this embodiment, specifically, the end effector 1 further includes a positioning pin 16; one end of the positioning pin 16 is provided in the staple cartridge accommodating cavity 211, and the staple cartridge 11 is provided with a positioning pin hole 111 for the positioning pin 16 to pass through. The cartridge accommodating cavity 211 is provided with an opening for the staple cartridge housing 11 to be installed along the axial direction of the central axis of the connecting outer tube 3, and the positioning pin 16 passes through the housing of the drive cavity 212 and the hollow drive connecting rod 24 and is connected to the positioning pin drive mechanism. Therefore, there is no need to pre-install positioning needles and corresponding transmission mechanisms in the staple cartridge as in the prior art, and the original method of pre-installing the positioning needles of the transverse stapler in the staple cartridge is changed, and the positioning needles are directly pre-installed on the transmission mechanism. , And the assembly with the positioning pin is realized by changing the installation mode of the staple cartridge. Compared with the prior art, the positioning pin in the present application is more stable and safe, and the assembly is simple, and the alignment of the transmission mechanism is not required; The structural installation method of the transverse stapler has been improved, the assembly is more compact, and the radial size of the transverse stapler is effectively reduced, so that it can enter the endoscopic surgery channel with a small inner diameter, so that it can be suitable for intracavitary surgery.

Further, the drive assembly further includes a drive push rod 22, a hollow drive link 24 is connected to the proximal end of the drive housing 21, and the drive push rod 22 sequentially passes through the inner cavity of the hollow drive link 24 and the inner cavity of the drive housing 21 . The hollow drive link 24 is used to push and pull the drive housing 21 to realize the forward and backward movement of the drive housing 21, thereby controlling the forward and backward movement of the staple cartridge housing 11. Specifically, the drive housing snap joint 219 and the hollow drive link snap joint 243 are fixedly connected after snapping and fitting; in this embodiment, specifically, the drive housing 21 includes a drive cavity 212 communicating with the staple cartridge accommodating cavity 211; The end effector 1 further includes a suture nail 12 and a push nail block 13. The driving assembly 2 also includes a driving push rod 22; the driving push rod 22 includes a driving end 223 and a driving connection part 224, and the driving end 223 is in the driving cavity 212 Sliding arrangement, the drive end 223 passes through the drive cavity 212 and then enters the staple cartridge accommodating cavity 211 to contact and push the staple block 13

Further, the driving assembly 2 further includes an empty staple cartridge protector 23. Before the staples are pushed, the locking end 231 of the empty staple cartridge protector 23 abuts against one side of the staple block 13 in a biased manner. The rod 22 drives the nail pusher block 13 to push the suture nail 12 upwards and after the pusher rod 22 is reset, the locking end 231 is inserted into the gap between the pusher rod 22 and the nail pusher block 13 by a biasing force;

The empty staple cartridge protector 23 further includes an elastic biasing member 232, a pivoting portion 233, and a fixed connecting portion 234; the empty staple cartridge protector 23 rotates relative to the drive housing 21 through the pivoted portion 233, and the locking end 231 is fixedly connected The part 234 is connected to the pivoting part 233;

One end of the elastic biasing member 232 deforms and abuts against the driving housing 21, and the other end is relatively fixed to the locking end 231, so as to provide the locking end 231 with a biasing force against one side of the nail block 13. The staple cartridge housing 11 is provided with an opening slot 111, and the locking end 231 of the empty staple cartridge protector 23 passes through the opening slot 111 and then biases against one side of the staple block 13. The above arrangement can prevent the driving push rod 22 from firing the staple cartridge upward again when the staple cartridge is empty, which has a protective effect. For the specific address, the opening slot 111 is set on the side of the staple cartridge housing 11 with a relatively large width, and the side is parallel to the longitudinal direction of the anvil 14. The opening slot 111 on the side cooperates with the empty staple cartridge protector 23, and the empty staple cartridge The protector 23 has a larger installation space, and has a better compactness effect than when the empty staple cartridge protector is arranged on the side with a narrower width of the corresponding staple cartridge in the prior art.

The bottom surface of the anvil 14 of the end effector 1 is perpendicular to the central axis of the connecting outer tube 3 and corresponds to the opening of the staple cartridge accommodating cavity 211. The end effector 1 also includes an anvil connecting piece 17, which is connected to one end of the anvil 14 and is arranged perpendicular to the anvil 14; the other end of the anvil connecting piece 17 is fixedly connected to the connecting outer tube 3; the traditional The anvil of the transverse stapler or transverse stapler is assembled by splicing multiple stamping pieces, and its driving mechanism is not provided with a connecting outer tube, and is directly connected to the handle mechanism. In this embodiment, the connecting outer tube 4 is used to connect the driving assembly 2 Integrating in it, the structure is more compact, the fit is tighter and it is not easy to break, the anvil 14 is directly connected to the pipe through the anvil connector 17, and the structure is stronger. In this embodiment, the anvil 14 and the anvil connecting piece 17 are connected by welding. In other embodiments, the anvil 14 and the anvil connecting piece 17 can also be made by integral molding. Both methods provide the anvil with strength. Strong support. Compared with the structure formed by splicing plate-shaped parts for cross-cutting in the prior art, the structure is more stable and the strength is higher. The anvil is not prone to break during operation, and it can maintain high strength even after its size is reduced. The operation is safe.

In order to enable the drive housing 21 and the connecting outer tube 3 to be slidably fitted and limited in the corresponding position, the maximum outer diameter of the first outer housing 213 of the staple cartridge accommodating cavity 211 is greater than the inner diameter of the connecting outer tube 3 and less than or equal to the connecting outer tube 3, the maximum outer diameter of the second outer housing 214 of the drive cavity 212 is less than or equal to the inner diameter of the connecting outer tube 3; in order to facilitate sliding, the second outer housing 214 is provided with a matching inner diameter of the anvil connector 17 Second guide slot 216. Furthermore, the anvil connecting piece 17 is further provided with a connecting piece guide rail 171, and the first outer housing 213 is provided with a first guide groove 215 matching the connecting piece guide rail 171. The above arrangement makes the anvil connecting piece 17 and the drive housing The coordination of the body 21 and the connecting outer tube 3 is more compact, and it is convenient to slide relatively along the guide rails to achieve stable driving, and the mechanism is more compact. When the anvil connecting piece 17 is connected by welding in this embodiment, a connecting groove 31 is provided on the inner side of the connecting outer tube 3, and the outer side of the other end of the anvil connecting piece 17 is fixedly connected to the connecting groove 31.

In this embodiment, specifically, the drive housing 21 includes a drive cavity 212 communicating with the staple cartridge accommodating cavity 211; the end effector 1 further includes a suture nail 12 and a nail push block 13, and the drive assembly 2 also includes a drive push rod 22; the drive push rod 22 includes a drive end 223 and a drive connection 224, the drive end 223 is slidably arranged in the drive cavity 212, the drive end 223 passes through the drive cavity 212 and then enters the staple cartridge accommodating cavity 211 to contact and push the push nail Block 13.

Further, in this embodiment, the driving end portion 223 includes relatively parallel side planes, and the distance between the two side planes is the same as the width of the driving cavity 212 and is smaller than the outer diameter of the driving connection portion 224, and the driving end portion 223 The width of φ is set to match the driving cavity 212, so that the driving end 223 will not shake during the driving process, and the entire driving process is more stable; the size of the driving end 223 is smaller than the driving connecting part 224, and the two are formed as shown in the figure The step surface, the step surface can be set to have a maximum outer diameter smaller than the minimum inner diameter of the hollow drive connecting rod clamping joint 243, so that the two form a limit. Further, for the sealing performance of the stapler in endoscopic surgery, a first sealing ring 221 is provided between the driving push rod 22 and the hollow driving connecting rod 24; a first sealing ring 221 is provided between the hollow driving connecting rod 24 and the connecting outer tube 3 The second sealing ring 241. In addition, the driving push rod 22 is provided with a first sealing ring mounting groove 222 that matches the first sealing ring 221, and the hollow driving link 24 is provided with a second sealing ring mounting groove 242 that matches the second sealing ring 241 , The drive push rod 22 on both sides of the first sealing ring installation groove 222 is cylindrical in shape and its outer diameter matches the inner diameter of the corresponding part of the hollow drive connecting rod 24; the hollow drive connection on both sides of the second sealing ring installation groove 242 The rod 24 is cylindrical in shape and has an outer diameter that matches the inner diameter of the corresponding part of the connecting outer tube 3.

In the above-mentioned embodiment, as a further improvement, the drive housing 21 can be divided into two parts arranged separately, which are specifically the first splicing housing 217 and the second splicing housing 218, which are connected by rivets or other clamping methods. Spliced together, due to the separate arrangement, other structures can be assembled and installed in advance, and finally the two shells are spliced to form a drive shell. Specifically, in this embodiment, the drive housing clamping joint 219 is provided on the second splicing housing 218, and the first splicing housing 217 is provided with a second guide groove 216 matching the anvil connector. The first splicing shell 217 and/or the second connecting shell 218 are also provided with a clamping groove for matching with the clamping protrusion provided on the mounting portion 112.

According to the above-mentioned embodiments, the beneficial effects of this application are mainly as follows:

Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The "one embodiment" or "embodiment" referred to herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation of the present application. In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. are based on the orientation or positional relationship shown in the drawings, and are only for It is convenient to describe the application and simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore cannot be understood as a limitation of the application.

As above, we have described the purpose of the present invention completely, but the present invention is not limited to the above-mentioned embodiments and implementation methods, and the features of the embodiments can be combined with each other without contradicting each other. Practitioners in the relevant technical fields can make various changes and implementations within the scope permitted by the technical idea of the present invention.

Claims

A transverse intracavitary suturing device with a compact structure, which is characterized by comprising an end effector (1), a connecting outer tube (3) and a drive assembly (2) at least partially arranged in the connecting outer tube (3), The end effector (1) includes a staple cartridge housing (11) and a positioning pin (16);

The drive assembly (2) includes a drive housing (21) for driving the staple cartridge housing (11); the staple cartridge housing (11) is arranged in the staple cartridge accommodating cavity of the drive housing (21) In (211), the staple cartridge accommodating cavity (211) is provided with an opening for the staple cartridge housing (11) to be installed along the axial direction of the central axis of the connecting outer tube (3), and the positioning pin (16) One end is arranged in the staple cartridge accommodating cavity (211), the staple cartridge (11) is provided with a positioning pin hole (112) for the positioning pin (16) to pass through, the positioning pin (16) The other end is connected with the positioning pin driving mechanism.
The transverse intracavitary suture device with a compact structure according to claim 1, wherein the drive assembly further comprises a drive push rod (22), and a hollow drive connector is connected to the proximal end of the drive housing (21). A rod (24), and the driving push rod (22) sequentially passes through the inner cavity of the hollow driving connecting rod (24) and the inner cavity of the driving housing (21).
The transverse intracavity stapler with a compact structure according to claim 2, characterized in that the drive housing (21) further comprises a drive cavity (212) communicating with the staple cartridge containing cavity (211), so The driving push rod (22) includes a driving end (223) and a driving connecting part (224), the driving end (223) is slidably arranged in the driving cavity (212), and the driving end (223) After passing through the driving cavity (212), it enters the staple cartridge accommodating cavity (211) to contact and push the staple pushing block (13) arranged in the staple cartridge housing (21).
The transverse intracavity stapler with a compact structure according to claim 2, characterized in that an empty staple cartridge protector (23) is provided on the drive housing (21), and before the staples are pushed, The locking end (231) of the empty staple cartridge protector (23) is biased against one side of the nail pushing block (13), when the driving push rod (22) drives the nail pushing block (13) Push the suture nail (12) upwards and after the drive push rod (22) is reset, the locking end (231) is inserted into the drive push rod (22) and the push rod (22) through a biasing force. In the gap between the nail blocks (13).
The transverse intracavitary stapler with a compact structure according to claim 4, wherein the empty staple cartridge protector (23) further comprises an elastic biasing member (232), a pivoting portion (233) and The fixed connecting portion (234); the empty staple cartridge protector (23) rotates relative to the driving housing (21) through the pivoting portion (233), and the locking end (231) passes through the fixed connecting portion (234) Connected to the pivot part (233);

One end of the elastic biasing member (232) deforms and abuts against the driving housing (21), and the other end is relatively fixed to the locking end (231) so as to face the locking end (231). Provide a biasing force against one side of the nail pushing block (13).
The transverse intracavity stapler with a compact structure according to claim 5, wherein the staple cartridge housing (11) is provided with an opening slot (111), and the empty staple cartridge protector (23) The locking end (231) passes through the opening slot (111) and then biases against one side of the nail push block (13).
The transverse intracavitary stapler with a compact structure according to claim 1, wherein the end effector (1) further comprises an anvil (14), and the bottom surface of the anvil (14) is vertical On the central axis of the connecting outer tube (3), and corresponding to the opening of the staple cartridge accommodating cavity (211).
The transverse intracavitary stapler with a compact structure according to claim 1, wherein the staple cartridge housing (11) comprises a staple ejecting portion (113) and a mounting portion (114), and the mounting portion (114) is matched with the staple cartridge accommodating cavity (211); the width of the staple ejecting portion (113) is greater than the opening width of the staple cartridge accommodating cavity (211).
The transverse intracavitary stapler with a compact structure according to claim 8, wherein the mounting portion (114) is provided with a clamping protrusion (115), and the staple cartridge accommodating cavity (211) A clamping groove matched with the clamping protrusion (115) is arranged inside.
The transverse intracavitary stapler with a compact structure according to claim 1, wherein the end effector (1) further comprises one end connected to the anvil (14) and connected to the anvil (14). ) A vertical anvil connecting piece (17), and the other end of the anvil connecting piece (17) is fixedly connected with the connecting outer tube (3).