CN214761261U - Endoscope nail anvil of stapler for folding stomach fundus - Google Patents

Abstract

The utility model discloses an endoscope nail anvil of a stapler for folding the fundus of the stomach, which comprises a nail anvil body, wherein the upper surface of the nail anvil body is arc-shaped; the arc-shaped upper surface of the anvil body is matched with the side part of the rigid section; the lower surface of the anvil body is a plane, and the lower part of the anvil body is matched with the anvil positioning groove of the tip seat; nail anvil fixing threaded holes are formed in the two ends of the nail anvil body respectively, and through the cooperation of the nail anvil fixing screws and the nail anvil fixing threaded holes, the threaded connection between the nail anvil fixing screws and the nail anvil body can be achieved. The utility model discloses a nail anvil set screw realize with the front end seat between fixed connection, the nail anvil of not only can being convenient for dismantlement, can increase the stability of being connected between nail anvil and the front end seat moreover, make the nail anvil bear huge instantaneous nail and join in marriage the connection state that still remains stable behind the power.

Description

Endoscope nail anvil of stapler for folding stomach fundus

Technical Field

The utility model relates to an accessory of minimally invasive surgery treatment instrument, in particular to an endoscope nail anvil of a stapler for folding the stomach fundus.

Background

Gastroesophageal reflux disease (GERD) refers to the reflux of excess contents of the stomach or duodenum into the esophagus, causing symptoms such as acid regurgitation, heartburn, and the like, and may cause esophagitis and tissue damage other than the esophagus, such as the pharynx, larynx, trachea, and the like. Gastroesophageal reflux disease (GERD) is a common disease in Western countries, and studies have shown that the incidence rate of gastroesophageal reflux disease in Western countries is about 10% -20%, Australia is about 11.6%, and Asian is about 5% in recent years. The incidence rate increases with the age, and the age of 40-60 years is the peak incidence age, and men and women have no difference, but patients with reflux esophagitis are more male than female. With the improvement of the living standard of residents, the requirements of people on the quality of life are continuously improved, and the gastroesophageal reflux prevalence rate is 5.77 percent in China according to the statistics of the digestive disease society of the Chinese medical society. Patients with gastroesophageal reflux disease in general can be cured by changing lifestyle or medication. However, some patients with cardia laxity or hiatal hernia have poor effects after drug treatment, some patients can only solve part of symptoms after drug treatment, and some patients need to insist on taking the medicine for a long time, and the patients need to be treated by surgical operation. Studies have shown that about 25% to 30% of patients with GERD have poor drug therapy or are intolerant of long-term medication and require surgical treatment.

The existing surgical treatment of gastroesophageal reflux disease generally adopts laparoscopic fundoplication or endoscopic suturing technology and radio frequency ablation technology, although the problem of repeated attack of symptoms can be solved, postoperative complications are often accompanied, and the postoperative quality of life is greatly influenced, so the mode of surgical treatment of gastroesophageal reflux disease is not popularized, and once the gastroesophageal reflux disease is suffered, the quality of life of a patient is obviously reduced.

In order to improve the quality of life of a patient, chinese patent document CN111671480A discloses an endoscopic stapling device for performing fundoplication, which is used in fundoplication minimally invasive stapling surgery under an endoscope, can treat moderate to severe gastroesophageal reflux disease, does not need to cut the abdominal cavity or any body surface incision in the whole operation process, as in the conventional gastroscopy, selects a suture position from the oral cavity through the esophagus and from the endoscope to the fundus, utilizes a visual internal camera to determine the positions of a staple box and the top end of the endoscope through an ultrasonic detector for positioning, selects 3 or more than 3 positions to staple the fundus to the lower esophageal segment, performs anterior fundoplication, performs the whole operation under the endoscope, can be completed in only 1-2 hours, has high patient compliance, small wound, no body surface incision and quick recovery, and significantly shortens the hospitalization time and recovery time, can effectively replace the lifelong drug therapy and the traditional operation mode of the gastroesophageal reflux disease.

The working principle of the instrument is that part of the fundus stomach is folded outside the lower esophageal segment by controlling the movement of the top part, and the fundus stomach and the lower esophageal segment are fixed together by nailing, so that a new acute angle His angle is formed around the esophagus, and the cardia anti-reflux barrier is strengthened to prevent the reflux of the gastroesophageal tract. Therefore, the therapeutic effect of the operation is directly dependent on the stapling effect of the fundus and the lower esophageal segment. The good and bad nailing and fixing effect of the fundus stomach and the lower esophagus depends on the matching performance of the top end part and the chopping board.

In addition, the apparatus is in the nailing operation in-process, and the chopping block can receive huge instantaneous nailing resultant force, if the stability that sets up the chopping block at top portion is not enough, can seriously influence the deformation effect of titanium nail after the nailing operation to finally influence the fixed effect of nailing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an scope nail anvil of stapler is used in stomach fundus fold is provided, it can lead to the direction of bending of titanium nail at the stapling in-process, makes the titanium nail after the stapling operation warp to the stapling state.

In order to solve the technical problem, the utility model discloses the folding scope nail anvil with stapler in stomach end's technical solution does:

comprises an anvil body 6-2-0, wherein the upper surface of the anvil body 6-2-0 is arc-shaped; the arc-shaped upper surface of the anvil body 6-2-0 is matched with the side part of the rigid section; the lower surface of the nail anvil body 6-2-0 is a plane, and the lower part of the nail anvil body 6-2-0 is matched with the nail anvil positioning groove 6-1-2 of the front end seat 6-1; the two ends of the nail anvil body 6-2-0 are respectively provided with nail anvil fixing threaded holes 6-2-9, and the nail anvil fixing screws 6-8 and the nail anvil fixing threaded holes 6-2-9 are matched to realize threaded connection between the nail anvil fixing screws 6-8 and the nail anvil body 6-2-0.

In another embodiment, the two ends of the anvil body 6-2-0 are respectively provided with a groove 6-2-10, and the anvil fixing threaded hole 6-2-9 is positioned in the groove 6-2-10.

In another embodiment, the anvil body 6-2-0 is provided with an anvil screw through hole 6-2-1, and the anvil screw through hole 6-2-1 corresponds to the anvil screw 6-3 of the tip seat 6-1.

In another embodiment, the anvil body 6-2-0 is provided at its side with two positioning protrusions 6-2-7, 6-2-8; the two positioning bulges 6-2-7 and 6-2-8 are centrosymmetric relative to the center of the circle where the anvil body 6-2-0 is located; notches 6-2-81 are formed on the outer side of the positioning projections 6-2-8 corresponding to the ultrasonic probe 10.

In another embodiment, the arc shape of the upper surface of the anvil body 6-2-0 extends along the length of the anvil body 6-2-0; the anvil body 6-2-0 has a length direction corresponding to the circumferential direction of the rigid section.

In another embodiment, a plurality of groups of titanium nail bending guide grooves are distributed on the upper surface of the anvil body 6-2-0, and each group of titanium nail bending guide grooves comprises two parallel bending guide grooves; the positions of the titanium nail bending guide grooves of each group correspond to the titanium nail accommodating grooves of the nail bin seat one by one; the groove bottom of each bending guide groove is arc-shaped.

In another embodiment, the two arc-shaped groove bottoms of each group of titanium nail bending guide grooves are symmetrically arranged.

In another embodiment, the bending guide groove is large at the top and small at the bottom in the width direction.

In another embodiment, the bending guide grooves of the titanium nail bending guide grooves of each group correspond to the nail legs of the titanium nails arranged in the titanium nail accommodating grooves one by one; and the two bending guide grooves of each group of titanium nail bending guide grooves respectively correspond to the two nail legs of the same titanium nail.

In another embodiment, the length of the bending guide groove is less than the length of the nail leg of the titanium nail; the length difference between the nail legs and the bending guide grooves is the nailing thickness of the titanium nail.

The utility model discloses the technological effect that can reach is:

the utility model discloses can provide the deformability of bending for a plurality of titanium nails that jet out from the titanium nail storage tank of rigidity section, the nail leg of titanium nail is under the guide effect of the tank bottom of the guide recess of bending, and two nail legs of same titanium nail can take place twice and inwards bend to warp and become the nail state of closing. The titanium nail in the nailing state can tightly fix two layers of tissues together, so that a new acute angle His angle is formed, the gastroesophageal flap valve is restored, and an effective barrier for preventing gastroesophageal reflux is established.

The utility model discloses a nail anvil set screw realize with the front end seat between fixed connection, the nail anvil of not only can being convenient for dismantlement, can increase the stability of being connected between nail anvil and the front end seat moreover, make the nail anvil bear huge instantaneous nail and join in marriage the connection state that still remains stable behind the power.

The utility model discloses a nail anvil appearance rule, not only easily processing has reduced manufacturing cost, and rigidity is better moreover, can bear bigger instantaneous nail and combine together, consequently can carry out the deformation of titanium nail more regular after the operation of stitching at the stapler.

Drawings

It is to be understood by those skilled in the art that the following description is merely exemplary in nature and that the principles of the present invention may be applied in numerous ways to achieve many different alternative embodiments. These descriptions are only used to illustrate the general principles of the teachings of the present invention and are not meant to limit the inventive concepts disclosed herein.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the general description given above and the detailed description of the drawings given below, serve to explain the principles of the invention.

The invention will be described in further detail with reference to the following drawings and detailed description:

FIG. 1 is a schematic view of the endoscope distal end portion of the stapler for fundoplication of the present invention;

fig. 2 is a schematic end view of the present invention;

FIG. 3 is a schematic sectional view A-A of FIG. 2;

fig. 4 is a side schematic view of the present invention;

fig. 5 is a schematic cross-sectional view of fig. 4 taken along line C-C.

Fig. 6 is an exploded schematic view of the present invention;

FIG. 7 is a schematic view of an anvil of the present invention;

FIG. 8 is a schematic view of an alternative angle of the anvil of the present invention;

fig. 9 is a schematic view of a tip seat of the present invention;

fig. 10 is a side schematic view of a tip seat of the present invention;

fig. 11 is a schematic sectional view B-B of fig. 10.

The reference numbers in the figures illustrate:

8 is a miniature camera, 9 is an LED lamp,

10 is an ultrasonic detector, 11 is an end positioning pin,

6-1 is a tip seat, 6-2 is a nail anvil,

6-3 is a nail anvil screw, 6-4 is a nail anvil screw driving shaft,

6-5 is a driven gear, 6-6 is a nail anvil screw guide sleeve,

6-7 are driven gear axial positioning pins, 6-8 are nail anvil fixing screws,

6-1-1 is a front end seat body, 6-1-2 is a nail anvil positioning groove,

6-1-3 is a through hole of a nail anvil screw driving shaft, 6-1-4 is a through hole of a driven gear,

6-1-5 is an LED lamp positioning hole, 6-1-6 is a micro camera positioning hole,

6-1-7 is an ultrasonic detector mounting hole, 6-1-8 is an end positioning pin accommodating hole,

6-1-20 is the end face of the front end seat, 6-1-21 is the screw hole of the front end seat,

6-1-22 is a notch, 6-1-23 is a water injection hole,

6-1-24 is a gas injection hole, 6-1-25 is the bottom surface of a nail anvil positioning groove,

21 is a gas nozzle, 22 is a water nozzle,

6-2-0 is a nail anvil body, 6-2-1 is a hole for the nail anvil screw to pass through,

6-2-2, 6-2-3, 6-2-4, 6-2-5 and 6-2-6 are titanium nail bending guide grooves,

6-2-7 and 6-2-8 are positioning projections, 6-2-81 are gaps,

the nail anvil fixing threaded hole is 6-2-9, and the groove is 6-2-10.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.

As shown in fig. 1 to 6, the endoscope tip of the stapler for folding the fundus of the stomach of the present invention comprises a tip seat 6-1, the end surface of the tip seat 6-1 is provided with a nail anvil 6-2, a micro camera 8, an LED lamp 9, an ultrasonic detector 10 and a tip positioning pin 11, the nail anvil 6-2 is fixedly arranged in the middle of the end surface of the tip seat 6-1, and both ends of the nail anvil 6-2 are fixedly connected with the tip seat 6-1 through nail anvil fixing screws 6-8 respectively; the surface of the nail anvil 6-2 protrudes out of the end surface of the front end seat 6-1, so that bending force can be provided for the titanium nail; the length direction of the nail anvil 6-2 is the circumference of the rigid section of the stapler; the miniature camera 8 and the LED lamp 9 are positioned at one side of the nail anvil 6-2, and the ultrasonic detector 10 and the end positioning pin 11 are positioned at the other side of the nail anvil 6-2; the LED lamp 9 is used for providing an illumination light source, and the micro camera 8 is used for collecting images; the ultrasonic detector 10 is used for transmitting and receiving ultrasonic signals;

as shown in fig. 3, the middle part of the end positioning pin 11 forms an external thread, and the end positioning pin 11 is connected with the front end seat 6-1 through a thread; the free end of the end positioning pin 11 is a tip end, and the fixed end of the end positioning pin 11 is connected with a positioning pin driving motor; the end positioning pin 11 is driven to rotate by the positioning pin driving motor, so that the end positioning pin 11 can move in a telescopic manner relative to the front end seat 6-1; the free end of the end positioning pin 11 is matched with the positioning pin hole of the rigid section of the stapler, so that tissue positioning can be carried out, and the deviation of the positioning position of the tissue in the operation process is avoided or reduced.

As shown in fig. 5, two nail anvil screws 6-3 are movably arranged inside the front end seat 6-1, the nail anvil screws 6-3 are fixedly connected with driven gears 6-5, and the two driven gears 6-5 are jointly engaged with a driving gear; the driving gear is arranged on the nail anvil screw driving shaft 6-4, and the nail anvil screw driving shaft 6-4 can rotate under the driving of power;

the nail anvil screw driving shaft 6-4 drives the two driven gears 6-5 to synchronously rotate, and can drive the nail anvil screw 6-3 to make telescopic motion relative to the nail anvil 6-2, so that the head part of the nail anvil screw 6-3 extends outwards from the nail anvil screw penetrating hole 6-2-1 of the nail anvil 6-2, and can extend into the nail bin seat, and the relative positioning between the tip part and the rigid section is realized;

the bottom of the nail anvil 6-2 is fixedly provided with two nail anvil screw guide sleeves 6-6, and the nail anvil screw guide sleeves 6-6 are connected with the nail anvil screws 6-3 through threads; the nail anvil screw guide sleeves 6-6 are in one-to-one correspondence with the driven gears 6-5 and are coaxially arranged; the nail anvil screw guide sleeve 6-6 can guide the nail anvil screw 6-3, so that the stroke of the nail anvil screw 6-3 can be accurately controlled;

the bottom of the driven gear 6-5 is provided with a driven gear axial positioning pin 6-7; the driven gear axial positioning pin 6-7 is longitudinally arranged in a driven gear axial positioning pin hole of the front end seat 6-1 in a penetrating way; the driven gear axial positioning pin 6-7 can axially limit the driven gear 6-5, and prevent the driven gear 6-5 from axial displacement.

As shown in fig. 7 and 8, the nail anvil 6-2 comprises a nail anvil body 6-2-0 with an arc-shaped upper surface, and the arc-shaped upper surface of the nail anvil body 6-2-0 is matched with the side part of the rigid section; the length direction of the anvil body 6-2-0 corresponds to the circumferential direction (i.e., the arc length direction) of the rigid section; when the end part is in a nailing state, the surface of the nail anvil body 6-2-0 is matched with the side part of the rigid section; the upper surface of the nail anvil 6-2 is used as a working surface thereof;

the nail anvil body 6-2-0 is provided with two nail anvil screw penetrating holes 6-2-1, and the nail anvil screw penetrating holes 6-2-1 correspond to the nail anvil screws 6-3;

five groups of titanium nail bending guide grooves 6-2-2, 6-2-3, 6-2-4, 6-2-5 and 6-2-6 are distributed on the surface of the nail anvil body 6-2-0 (five different patterns are used for respectively representing the groove bottoms of the five groups of titanium nail bending guide grooves in figure 7); each group of titanium nail bending guide grooves comprises two parallel bending guide grooves, and each bending guide groove corresponds to one nail leg of a titanium nail; the bottom of each bending guide groove is arc-shaped with two high ends and a low middle part, and the bottom of each group of titanium nail bending guide grooves is symmetrically arranged; the bending guide groove can guide the bending direction of the titanium nail leg.

The side part of the anvil body 6-2-0 is provided with two positioning bulges 6-2-7 and 6-2-8; the two positioning bulges 6-2-7 and 6-2-8 are centrosymmetric relative to the center of the circle where the anvil body 6-2-0 is located; in order to avoid the interference between the positioning bulge 6-2-8 and the ultrasonic detector 10, a notch 6-2-81 is formed on the outer side of the positioning bulge 6-2-8;

the two ends of the nail anvil body 6-2-0 are respectively provided with nail anvil fixing threaded holes 6-2-9, and the screw connection between the nail anvil fixing screws 6-8 and the nail anvil 6-2 can be realized through the matching of the nail anvil fixing screws 6-8 and the nail anvil fixing threaded holes 6-2-9; the utility model realizes the fixed connection between the nail anvil 6-2 and the first end seat 6-1 through two nail anvil fixing screws 6-8, which not only can facilitate the disassembly of the nail anvil 6-2, but also can increase the connection stability between the nail anvil 6-2 and the first end seat 6-1, so that the nail anvil 6-2 still keeps a stable connection state after bearing huge instantaneous nail resultant force;

the two ends of the nail anvil body 6-2-0 are respectively provided with a groove 6-2-10, and the nail anvil fixing threaded hole 6-2-9 is positioned in the groove 6-2-10, so that the nail anvil fixing screw 6-8 in the nail anvil fixing threaded hole 6-2-9 can be hidden in the groove 6-2-10 and cannot be exposed on the surface of the nail anvil body 6-2-0, the smoothness of the surface of the nail anvil 6-2 is improved, and the injury to a human body caused by the tip part in the process of entering a human body channel is avoided;

the nail anvil 6-2 of the utility model has regular appearance, is easy to process, has better rigidity and can bear larger instantaneous nail resultant force.

As shown in fig. 9 to 11, the tip seat 6-1 includes a tip seat body 6-1-1, an end surface 6-1-20 of the tip seat body 6-1-1 is a plane, a nail anvil positioning slot 6-1-2 extending along the longitudinal direction is arranged in the middle of the end surface 6-1-20, a bottom surface 6-1-25 of the nail anvil positioning slot 6-1-2 is a plane, the nail anvil positioning slot 6-1-2 is matched with the bottom of the nail anvil 6-2, and the nail anvil 6-2 is fixedly arranged in the nail anvil positioning slot 6-1-2;

two ends of the nail anvil positioning groove 6-1-2 are respectively provided with two openings 6-1-22; because the stapler mainly depends on the nail anvil screw 6-3 to realize the relative positioning between the tip and the rigid section in the operation process, and the nail anvil screw 6-3 needs to penetrate through two layers of tissues of the stomach fundus and the esophagus to extrude in the positioning process, considering factors such as operation risk and design risk of surgical instruments, when the nail anvil screw 6-3 fails to retract due to power failure and the nail anvil fixing screw 6-8 slips and the nail anvil 6-2 cannot be normally detached, the detachment tool can be completely fixed by utilizing the notch 6-1-22, so that the nail anvil 6-2 is detached from the tip seat 6-1, and the nail anvil screw 6-3 is retracted;

a nail anvil screw driving shaft penetrating hole 6-1-3 and two driven gear penetrating holes 6-1-4 are formed in the nail anvil positioning groove 6-1-2; the driving shaft through hole 6-1-3 of the nail anvil screw and the driven gear through hole 6-1-4 extend along the axial direction;

both ends of the nail anvil positioning groove 6-1-2 are respectively provided with a screw hole 6-1-21 of a tip seat; the screw holes 6-1-21 of the tip seat extend along the axial direction; the screw hole 6-1-21 of the front end seat corresponds to the screw hole 6-2-9 for fixing the nail anvil of the nail anvil 6-2;

one side of the front end seat body 6-1-1 is provided with a micro camera positioning hole 6-1-6 and an LED lamp positioning hole 6-1-5, a micro camera 8 is fixedly arranged in the micro camera positioning hole 6-1-6, an LED lamp shade is fixedly arranged at the end part of the LED lamp positioning hole 6-1-5, and an LED lamp 9 is fixedly arranged in the LED lamp positioning hole 6-1-5;

the side of the front end seat body 6-1-1 is also provided with a water injection hole 6-1-23 and a gas injection hole 6-1-24; the end of the water injection hole 6-1-23 is fixedly connected with a water nozzle 22 with a side outlet, and the end of the gas injection hole 6-1-24 is fixedly connected with a gas nozzle 21 with a side outlet; when the water injection holes 6-1-23 spray water outwards, the water nozzle 22 sprays water to the miniature camera 8 and the LED lamp 9, so that the lens of the miniature camera 8 and the LED lamp 9 are washed; when the gas injection holes 6-1-24 exhaust outwards, the gas nozzle 21 enables the gas flow to be sprayed to the micro-camera 8 and the LED lamp 9, so that the lens of the micro-camera 8 and the LED lamp 9 are blown;

the other side of the front end seat body 6-1-1 is provided with an end positioning pin accommodating hole 6-1-8 and an ultrasonic detector mounting hole 6-1-7, and an ultrasonic detector 10 is fixedly arranged in the ultrasonic detector mounting hole 6-1-7; the lower part of the end positioning pin accommodating hole 6-1-8 forms an internal threaded hole, and the lower internal threaded hole of the end positioning pin accommodating hole 6-1-8 is connected with the end positioning pin 11 through threads;

as shown in fig. 10, the end surface of the mounting hole 6-1-7 of the ultrasonic probe protrudes beyond the end surface 6-1-20 of the tip seat 6-1-1, so that the ultrasonic probe can slightly protrude beyond the end surface 6-1-20 of the tip seat 6-1-1, thereby widening the field of view for transmitting and receiving ultrasonic waves by the ultrasonic probe; the end face of the end positioning pin accommodating hole 6-1-8 is flush with the end face of the ultrasonic detector mounting hole 6-1-7.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications of the present invention fall within the scope of the claims and their equivalent technologies, the present invention is also intended to include such modifications and variations.

Claims (10)

1. An endoscope nail anvil of a stapler for folding the fundus of the stomach is characterized by comprising a nail anvil body (6-2-0), wherein the upper surface of the nail anvil body (6-2-0) is arc-shaped; the arc-shaped upper surface of the anvil body (6-2-0) is matched with the side part of the rigid section; the lower surface of the nail anvil body (6-2-0) is a plane, and the lower part of the nail anvil body (6-2-0) is matched with a nail anvil positioning groove (6-1-2) of the front end seat (6-1); the nail anvil fixing device is characterized in that nail anvil fixing threaded holes (6-2-9) are formed in two ends of the nail anvil body (6-2-0) respectively, and through the cooperation of the nail anvil fixing screws (6-8) and the nail anvil fixing threaded holes (6-2-9), the screw connection between the nail anvil fixing screws (6-8) and the nail anvil body (6-2-0) can be achieved.

2. An endoscopic anvil of a stapler for fundoplication according to claim 1, wherein said anvil body (6-2-0) has grooves (6-2-10) formed at both ends thereof, and said anvil fixing screw hole (6-2-9) is located in the groove (6-2-10).

3. The endoscope nail anvil of the stapler for folding the fundus ventriculi according to claim 1 or 2, wherein the nail anvil body (6-2-0) is provided with a nail anvil screw through hole (6-2-1), and the nail anvil screw through hole (6-2-1) corresponds to the nail anvil screw (6-3) of the tip seat (6-1).

4. Endoscopic anvil of a stapler for fundoplication according to claim 1 or 2, characterized in that the side of said anvil body (6-2-0) is provided with two positioning protrusions (6-2-7, 6-2-8); the two positioning bulges (6-2-7, 6-2-8) are centrosymmetric relative to the center of the circle where the anvil body (6-2-0) is located; notches (6-2-81) are formed on the outer side of the positioning bulge (6-2-8) corresponding to the ultrasonic detector (10).

5. Endoscopic anvil of a stapler for fundoplication according to claim 1, wherein said anvil body (6-2-0) has an upper surface with a curved shape extending in the length direction of the anvil body (6-2-0); the length direction of the anvil body (6-2-0) corresponds to the circumferential direction of the rigid section.

6. The endoscopic nail anvil of the stapler for fundus folding according to claim 1, wherein a plurality of groups of titanium nail bending guide grooves are distributed on the upper surface of the nail anvil body (6-2-0), and each group of titanium nail bending guide grooves comprises two bending guide grooves which are arranged in parallel; the positions of the titanium nail bending guide grooves of each group correspond to the titanium nail accommodating grooves of the nail bin seat one by one; the groove bottom of each bending guide groove is arc-shaped.

7. The endoscopic anvil of a stapler for fundoplication of the stomach according to claim 6, wherein said two curved groove bottoms of each set of titanium staple bending guiding grooves are symmetrically arranged.

8. An endoscopic anvil of a stapler for fundoplication of the stomach according to claim 6, wherein said bending guide groove is large at the top and small at the bottom in the width direction.

9. The endoscopic nail anvil of the stapler for folding the fundus of the stomach according to claim 6, wherein the bending guide grooves of the titanium nail bending guide grooves of each set correspond to the nail legs of the titanium nails disposed in the titanium nail accommodating grooves one to one; and the two bending guide grooves of each group of titanium nail bending guide grooves respectively correspond to the two nail legs of the same titanium nail.

10. The endoscopic anvil of a stapler for fundoplication of the stomach according to claim 6, wherein the length of said bending guide groove is smaller than the leg length of the titanium staple; the length difference between the nail legs and the bending guide grooves is the nailing thickness of the titanium nail.

Images