A prepuce cutting anastomat with high structural strength

Abstract

The utility model discloses a foreskin cutting anastomat with high structural strength, which comprises a glans cap, a nail bin, a nail bin cover, an annular cutter, a nail pushing cover, a reset spring, an intermediate cover, an adjusting nut and two handles. The left ends of the two handles are hingedly connected to the outer sides of the right end of the nail bin cover. The central rod at the right end of the glans cap is slidably sleeved with a transmission cover. The left end of the transmission cover is fixedly connected with the right end of the nail pushing cover. The reset spring is limited between the nail bin cover and the transmission cover. The intermediate cover has two guide through grooves corresponding to the two sides and extending along the axial direction. The two handles are each fixedly provided with a driving arm extending towards the right end of the intermediate cover. The right end portions of the two driving arms respectively pass through a corresponding guide through groove and abut against the right end face of the transmission cover. The handle, the driving arm, the transmission cover and the spring form a spring lever structure, which has better stress intensity and effectively eliminates or reduces the risk of cracking or deformation of the transmission cover when the handle is fired during the foreskin cutting operation. The handle is more labor-saving when fired, and the use is more smooth and comfortable.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a circumcision stapler with high structural strength. Background Technology

[0002] Currently, the main treatment for phimosis and paraphimosis in men is circumcision. Common methods include conventional surgical cutting, laser cutting, and circumcision stapler method. Conventional surgical cutting can completely protect the frenulum and allow the glans to retract and relax normally, but it has drawbacks such as more intraoperative bleeding, longer operation time, pain, and unsightly postoperative results. Laser cutting is expensive, the technology is not very mature, the energy generated by the laser is high, which increases the recovery period and can cause a burning sensation on the penis, and in severe cases, damage to the penis. The most commonly used method is the circumcision stapler method, which uses a circumcision stapler (also known as a circumcision stapler) to perform circumcision on patients with phimosis. It has advantages such as simple operation, short operation time, clean incision, and less bleeding.

[0003] In existing circumcision staplers, the handle pushing mechanism typically includes a central rod coaxially located on the right side of the glans cover, a connecting tube at the right end of the staple pusher sleeve, a return spring, a transmission sleeve, a handle, a handle connector, and an intermediate sleeve. The central rod passes through the staple pusher sleeve, transmission sleeve, intermediate sleeve, and adjusting nut sequentially from left to right. The adjusting nut is screwed onto the threaded section at the right end of the central rod. The right end of the connecting tube is fixedly connected to the left end of the transmission sleeve. The left end of the handle is hinged to the outer right end of the staple cartridge sleeve via a pin, and the middle part is hinged to the ear plate on the outer side of the transmission sleeve via the handle connector and a pin. The return spring is sleeved on the connecting tube and confined between the staple cartridge sleeve and the transmission sleeve. During use, by pressing the handles together, the handle, through the handle connector, drives the transmission sleeve to move to the left, compressing the return spring and causing it to deform, thus driving the staple pusher sleeve to move to the left for circumcision. The problem with this handle pushing mechanism is that the transmission sleeve, being a thin-walled tubular structure, is prone to cracking and deformation under the pressure of the handle, potentially affecting the success rate of the circumcision. Therefore, this utility model proposes a circumcision stapler with high structural strength in order to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide a circumcision stapler with high structural strength. The handle, drive arm, transmission sleeve, and spring form a spring lever structure, which has better force strength than the traditional spring slider push structure. It effectively eliminates or reduces the risk of cracking or deformation of the transmission sleeve when the handle is fired during circumcision surgery. At the same time, it is more effortless to fire the handle during circumcision surgery and has better smoothness and comfort. The overall structure is ingeniously and reasonably designed, with high feasibility for preparation and implementation and strong practicality.

[0005] To achieve the above objectives, the technical solution of this utility model is to design a high-strength circumcision stapler, including a glans cover, a staple cartridge, a staple cartridge sleeve, an annular cutter, a staple pusher sleeve, a return spring, an intermediate sleeve, an adjusting nut, and two handles. A central rod is vertically fixed to the center of the right side of the glans cover. The central rod passes through the staple pusher sleeve, the intermediate sleeve, and the adjusting nut sequentially from left to right. The staple cartridge sleeve is coaxially fitted onto the outer periphery of the staple pusher sleeve, and its right end is fixedly connected to the left end of the intermediate sleeve. The staple cartridge is coaxially fixed to the left end of the staple cartridge sleeve. The staple cartridge has several staple mounting holes spaced circumferentially through its axial left and right ends. The annular cutter is coaxially injection molded and fixed to the inner side of the left end of the staple pusher sleeve. A connecting tube is coaxially fixed to the right end of the staple pusher sleeve. The adjusting nut is screwed onto the threaded section of the right end of the central rod and is adjusted... The left end of the nut abuts against the right end of the intermediate sleeve. The return spring is sleeved on the second connecting tube. The two handles are distributed on the outer sides of the intermediate sleeve. The left end of the handle is hinged to the outer side of the right end of the staple cartridge sleeve. A transmission sleeve is also slidably sleeved on the outside of the center rod. The left end of the transmission sleeve is fixedly connected to the right end of the second connecting tube. The return spring is limited between the staple cartridge sleeve and the transmission sleeve. The intermediate sleeve has two guide slots located on both sides of its outer peripheral wall and extending along the axial direction. Both handles are fixed with drive arms that gradually extend towards the right end of the intermediate sleeve. The right end of the drive arm on one handle passes through a corresponding guide slot and abuts against one side of the right end face of the transmission sleeve. The right end of the drive arm on the other handle passes through another corresponding guide slot and abuts against the other side of the right end face of the transmission sleeve.

[0006] This utility model discloses a high-strength circumcision stapler. The handle, drive arm, transmission sleeve, and spring form a spring lever structure, which has better force strength compared with the traditional spring slider push structure. It effectively eliminates or reduces the risk of cracking or deformation of the transmission sleeve when the handle is fired during circumcision surgery. At the same time, it is more effortless to fire the handle during circumcision surgery, and the use is smoother and more comfortable. The overall structure is ingeniously and reasonably designed, with high feasibility for manufacturing and implementation, and strong practicality.

[0007] The preferred technical solution is that the transmission sleeve is a frustum-shaped structure with a larger left side and a smaller right side, and the left end of the transmission sleeve is fixedly connected to the right end of the connecting tube two via a snap-fit ​​assembly. The frustum-shaped structure of the transmission sleeve ensures good fit between its outer surface and the inner surface of the right end of the drive arm, thus helping to ensure stability when the drive arm drives the transmission sleeve to the left during the cutting and suturing of the foreskin tissue with the firing handle, preventing slippage.

[0008] A further preferred technical solution includes an annular groove on the outer circumferential surface of the right end of the second connecting tube, and a mounting block with planar upper and lower end faces at the middle of the left end of the transmission sleeve. The mounting block has a mounting groove penetrating both end faces. The left end face of the mounting block has two locking blocks extending towards the axial center line of the transmission sleeve. The opposing sides of the two locking blocks have corresponding arc-shaped grooves. The transmission sleeve is engaged with the right end of the second connecting tube via the mounting groove, and the two locking blocks engage with the annular groove from both sides. The annular groove and the two locking blocks on the mounting block constitute the first snap-fit ​​assembly. The snap-fit ​​assembly is ingeniously and reasonably designed, making the assembly of the transmission sleeve and the right end of the second connecting tube convenient and improving the assembly efficiency of the circumcision stapler of this invention.

[0009] A further preferred technical solution includes an anti-rotation block inside the annular groove, which is embedded between the two locking blocks. The anti-rotation block effectively prevents the transmission sleeve from rotating axially relative to the central rod, further ensuring the smoothness of the drive arm driving the transmission sleeve to the left during the cutting and suturing of the foreskin tissue by the firing handle, while also ensuring good correspondence between the anastomosis staple installed inside the staple mounting hole and the staple groove on the glans cover.

[0010] A further preferred technical solution includes a clearance groove on the left side of the handle facing the intermediate sleeve. The right end of one drive arm abuts against the rear right end face of the transmission sleeve, and the right end of the other drive arm abuts against the front right end face of the transmission sleeve. A central rod is located between the right ends of the two drive arms. The clearance groove improves the ease of fixing the left end of the drive arm to the left end of the handle. The central rod, located between the right ends of the two drive arms, effectively avoids the right ends of the drive arms during the foreskin tissue cutting and suturing process, allowing the drive arms to push the transmission sleeve to the left so that the annular cutter and staples can effectively abut against the anvil on the glans cover, increasing the success rate of the circumcision surgery.

[0011] A further preferred technical solution includes a connecting tube coaxially arranged at the right end of the staple cartridge sleeve. Two ear plates are correspondingly provided on the outside of the connecting tube. The right end of the connecting tube has two positioning blocks. The left ends of the two handles are respectively hinged to one of the corresponding ear plates via pins. The left end of the guide groove is open. The right end of the connecting tube and the left end of the intermediate sleeve are fastened together by a snap-fit ​​assembly. The two positioning blocks are inserted and embedded in the corresponding left ends of the guide grooves. The connection method between the connecting tube at the right end of the staple cartridge sleeve and the intermediate sleeve and handles is simple. The positioning blocks are inserted and embedded in the corresponding left ends of the guide grooves, effectively preventing axial rotation of the intermediate sleeve and the staple cartridge sleeve, thus ensuring good stability.

[0012] A further preferred technical solution includes a pad ring embedded on the outer periphery of the right end face of the glans cover, and the pad ring is coaxially corresponding to the annular cutter. A silicone pad is fitted to the left end face of the staple cartridge, and a staple cartridge cover is sleeved on the left end of the staple cartridge sleeve.

[0013] A further preferred technical solution includes a plurality of push pin plates spaced circumferentially on the left end of the push pin sleeve, and a plurality of pin grooves circumferentially distributed on the outer periphery of the glans cover on the right end face. The pin grooves, push pin plates, and anastomosis pin mounting holes correspond one-to-one, and the left end of the push pin plate is movably inserted into the right end of the corresponding anastomosis pin mounting hole. One end of the bottom surface of the pin groove is provided with a spiral groove I for gradually guiding and bending one pin leg of the anastomosis pin towards the outside of the glans cover, and the other end of the bottom surface of the pin groove is provided with a spiral groove II for gradually guiding and bending the other pin leg of the anastomosis pin towards the inside of the glans cover. The spiral groove at one end of the bottom surface of the staple groove on the glans cover gradually guides one of the staple legs on the corresponding staple to bend outwards towards the outside of the glans cover, while the spiral groove at the other end of the bottom surface of the staple groove gradually guides the other staple leg on the corresponding staple to bend inwards towards the inside of the glans cover. This causes the two staple legs on the staple to bend and staggered towards one side of the staple plate, forming a 3D "B" shaped structure. This significantly increases the space between the staple leg and the staple plate, thereby ensuring a strong fit between the staple and the foreskin tissue cutting site and helping to reduce the pressure of the staple on the foreskin tissue cutting site, thus improving bleeding.

[0014] The advantages and beneficial effects of this utility model are as follows:

[0015] 1. This utility model discloses a high-strength circumcision stapler. The handle, drive arm, transmission sleeve, and spring form a spring lever structure. Compared with the traditional spring slider push structure, it has better force strength and effectively eliminates or reduces the risk of cracking or deformation of the transmission sleeve when the handle is fired during circumcision surgery. At the same time, it is more labor-saving when firing the handle during circumcision surgery, and the use is smoother and more comfortable. The overall structural design is ingenious and reasonable, and the manufacturing and implementation are highly feasible and practical.

[0016] 2. The transmission sleeve is a frustum-shaped conical structure with a larger left side and a smaller right side. The left end of the transmission sleeve is fixedly connected to the right end of the connecting pipe II via a snap-fit ​​assembly. The frustum-shaped structure of the transmission sleeve ensures a good fit between its outer surface and the inner surface of the right end of the drive arm. This helps ensure the stability of the drive arm when driving the transmission sleeve to the left during the cutting and suturing of the foreskin tissue by the firing handle, preventing slippage.

[0017] 3. The annular groove is equipped with an anti-rotation block, which is embedded between the two locking blocks. The anti-rotation block is embedded between the two locking blocks to effectively prevent the transmission sleeve from rotating axially relative to the central rod, further ensuring the stability of the drive arm driving the transmission sleeve to the left during the cutting and suturing of the foreskin tissue by the firing handle, and at the same time ensuring good correspondence between the anastomosis staple installed in the anastomosis staple installation hole and the staple groove on the glans cover.

[0018] 4. The left end of the handle, facing the middle sleeve, also has a clearance groove. The right end of one drive arm abuts against the rear side of the right end face of the transmission sleeve, and the right end of the other drive arm abuts against the front side of the right end face of the transmission sleeve. The center rod is located between the right ends of the two drive arms. The clearance groove improves the convenience of fixing the left end of the drive arm to the left end of the handle. The center rod is located between the right ends of the two drive arms, so that during the process of firing the handle to cut and suture the foreskin tissue, the center rod can effectively avoid the right ends of the drive arms, allowing the drive arms to push the transmission sleeve to the left so that the annular cutter and the anastomosis staple can effectively abut against the anvil on the glans cover, increasing the success rate of the circumcision surgery.

[0019] 5. The spiral groove at one end of the bottom surface of the staple groove on the glans cover gradually guides one of the staple legs on the corresponding staple to bend outwards towards the glans cover, while the spiral groove at the other end of the bottom surface of the staple groove gradually guides the other staple leg on the corresponding staple to bend inwards towards the glans cover. This causes the two staple legs on the staple to bend and staggered towards one side of the staple plate, forming a 3D "B" shaped structure. This significantly increases the space between the staple leg and the staple plate, thereby ensuring a strong fit between the staple and the foreskin tissue cutting site and helping to reduce the pressure of the staple on the foreskin tissue cutting site, thus improving bleeding. Attached Figure Description

[0020] Figure 1 It is the staple formed by the circumcision stapler in the existing technology;

[0021] Figure 2 This is a front-view perspective perspective view of the high-strength circumcision stapler of this utility model;

[0022] Figure 3 This is a longitudinal sectional view along the axial centerline of the high-strength circumcision stapler of this utility model;

[0023] Figure 4 This is a three-dimensional view of the right front side of the high-strength circumcision stapler of this utility model;

[0024] Figure 5 yes Figure 4 A magnified view of a section at point H in the middle;

[0025] Figure 6 This is an exploded view of the high-strength circumcision stapler of this utility model;

[0026] Figure 7 This is an assembly diagram showing the relationship between the push pin sleeve and the return spring;

[0027] Figure 8 This is a three-dimensional view of the left end of the transmission sleeve;

[0028] Figure 9 It is a 3D diagram of the glans penis;

[0029] Figure 10 yes Figure 9 A magnified view of a section at point S in the middle;

[0030] Figure 11 This is a three-dimensional view of one end of the staple;

[0031] Figure 12 This is a three-dimensional view of the other end of the anastomotic staple.

[0032] In the diagram: 1. Glans cover; 2. Blade pad ring; 3. Staple cartridge cover; 4. Silicone pad; 5. Staple cartridge; 6. Staple cartridge sleeve; 7. Annular cutter; 8. Staple pusher sleeve; 9. Return spring; 10. Transmission sleeve; 11. Intermediate sleeve; 12. Adjusting nut; 13. Handle; 14. Drive arm; 15. Anastomotic staple; 1-1. Center rod; 1-2. Staple groove; 1-2a. Spiral groove one; 1-2b. Spiral groove two; 6-1. Connecting tube one; 6-2. Ear plate; 6-3. Positioning block; 8-1. Staple pusher plate; 8-2. Connecting tube two; 8-2a. Annular groove; 8-2b. Anti-rotation block; 10-1. Mounting block; 10-2. Mounting groove; 10-3. Locking block; 10-3a. Arc groove; 11-1. Guide groove; 13-1. Clearance groove; 15-1. Staple plate; 15-2. Staple foot. Detailed Implementation

[0033] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0034] Example

[0035] like Figures 2-10As shown, a high-strength circumcision stapler includes a glans cover 1, a staple cartridge 5, a staple cartridge sleeve 6, a ring cutter 7, a staple pusher sleeve 8, a return spring 9, an intermediate sleeve 11, an adjusting nut 12, and two handles 13. A central rod 1-2 is vertically fixed to the center of the right side of the glans cover 1. The central rod 1-2 passes through the staple pusher sleeve 8, the intermediate sleeve 11, and the adjusting nut 12 sequentially from left to right. The staple cartridge sleeve 6 is coaxially sleeved on the outer periphery of the staple pusher sleeve 8, and its right end is connected to the central rod 1-2. The left end of the intermediate sleeve 11 is fixedly connected, and the staple cartridge 5 is coaxially fixed to the left end of the staple cartridge sleeve 6. The staple cartridge 5 is provided with several matching staple mounting holes that penetrate its axial left and right end faces at intervals. The annular cutter 7 is coaxially injection molded and fixed to the inner side of the left end of the pusher sleeve 8. The right end of the pusher sleeve 8 is coaxially fixed with a connecting tube 2 8-2. The adjusting nut 12 is screwed onto the threaded section of the right end of the center rod 1-2, and the left end of the adjusting nut 12 abuts against the right end of the intermediate sleeve 11. The reset spring 9 is sleeved on the connecting tube 8-2. The two handles 13 are distributed on the outer sides of the intermediate sleeve 11. The left end of the handle 13 is hinged to the outer side of the right end of the staple cartridge sleeve 6. The center rod 1-2 is also slidably sleeved with a transmission sleeve 10. The left end of the transmission sleeve 10 is fixedly connected to the right end of the connecting tube 8-2. The reset spring 9 is limited between the staple cartridge sleeve 6 and the transmission sleeve 10. The intermediate sleeve 11 has two guide slots 11-1 located on both sides of its outer peripheral wall and extending along the axial direction. Both handles 13 are fixed with drive arms 14 that gradually extend towards the right end of the intermediate sleeve 11. The right end of the drive arm 14 on one handle 13 passes through a corresponding guide slot 11-1 and abuts against one side of the right end face of the transmission sleeve 10. The right end of the drive arm 14 on the other handle 13 passes through another corresponding guide slot 11-1 and abuts against the other side of the right end face of the transmission sleeve 10. Specifically, both the handle 13 and the drive arm 14 are metal parts. The left end of the drive arm 14 is welded and fixedly connected to the left end of the handle 13. Both are covered with a plastic coating to improve grip comfort.

[0036] Preferably, the transmission sleeve 10 is a cone-shaped frustum structure with a larger left side and a smaller right side, and the left end of the transmission sleeve 10 is fixedly connected to the right end of the connecting pipe 8-2 by a snap fastener assembly.

[0037] More preferably, the outer circumferential surface of the right end of the connecting pipe 8-2 has an annular groove 8-2a, and the middle of the left end of the transmission sleeve 10 has a mounting block 10-1 with both upper and lower end faces being planar. The mounting block 10-1 has a mounting groove 10-2 that runs through both upper and lower end faces. The left end face of the mounting block 10-1 has two locking blocks 10-3 that extend correspondingly to the axial center line of the transmission sleeve 10. The opposing side faces of the two locking blocks 10-3 have corresponding arc-shaped grooves 10-3a. The transmission sleeve 10 is locked onto the right end of the connecting pipe 8-2 through the mounting groove 10-2, and the two locking blocks 10-3 are locked into the annular groove 8-2a from both sides. The annular groove 8-2a and the two locking blocks 10-3 on the mounting block 10-1 constitute the first buckle assembly.

[0038] More preferably, the annular groove 8-2a is provided with an anti-rotation block 8-2b, and the anti-rotation block 8-2b is embedded between the two locking blocks 10-3.

[0039] More preferably, the left end of the handle 13 facing the middle sleeve 11 also has a relief groove 13-1, the right end of one of the drive arms 14 abuts against the rear side of the right end face of the transmission sleeve 10, the right end of the other drive arm 14 abuts against the front side of the right end face of the transmission sleeve 10, and the center rod 1-2 is located between the right ends of the two drive arms 14.

[0040] More preferably, the right end of the staple cartridge sleeve 6 is coaxially provided with a connecting tube 6-1, and the outside of the connecting tube 6-1 is provided with two ear plates 6-2. The right end of the connecting tube 6-1 has two positioning blocks 6-3. The left ends of the two handles 13 are respectively hinged to the corresponding ear plates 6-2 by pins. The left end of the guide groove 11-1 is open. The right end of the connecting tube 6-1 and the left end of the intermediate sleeve 11 are fastened together by a second snap-fit ​​assembly. The two positioning blocks 6-3 are inserted and embedded in the corresponding left end of the guide groove 11-1. Specifically, the right end of the connecting tube 6-1 has several locking holes, and the left end of the intermediate sleeve 11 has several locking feet. The locking feet of the left end of the intermediate sleeve 11 are correspondingly locked into the locking holes of the right end of the connecting tube 6-1. The several locking feet and locking holes that are correspondingly locked together constitute the second snap-fit ​​assembly.

[0041] More preferably, it also includes a pad ring 2 embedded on the outer periphery of the right end face of the glans cover 1, and the pad ring 2 is coaxially corresponding to the annular cutter 7. A silicone pad 4 is fitted to the left end face of the staple cartridge 5, and a staple cartridge cover 3 is sleeved on the left end of the staple cartridge sleeve 6.

[0042] More preferably, the left end of the pusher sleeve 8 is provided with a plurality of pusher plates 8-1 spaced circumferentially, and the right end face of the glans cover 1 is also provided with a plurality of nail grooves 1-2 circumferentially distributed on the outer periphery of the pad ring 2. The nail grooves 1-2, the pusher plates 8-1 and the anastomosis nail mounting holes correspond one-to-one, and the left end of the pusher plate 8-1 is movably inserted into the right end of the corresponding anastomosis nail mounting hole. One end of the bottom surface of the nail groove 1-2 is provided with a spiral groove 1-2a for gradually guiding and bending one nail leg 15-2 on the anastomosis nail 15 towards the outside of the glans cover 1. The other end of the bottom surface of the nail groove 1-2 is provided with a spiral groove 1-2b for gradually guiding and bending another nail leg 15-2 on the anastomosis nail 15 towards the inside of the glans cover 1.

[0043] The working principle of this utility model of a high-strength circumcision stapler:

[0044] Remove the adjusting nut 12, place the foreskin onto the concave seat of the glans cover 1, and then use cable ties or wire to secure the foreskin to the anti-slip texture of the concave seat on the glans cover 1; remove the nail cartridge cover 3, reinsert the center rod 1-1 into the pusher sleeve 8 and the transmission sleeve 10, and re-screw the adjusting nut 12 onto the threaded section at the right end of the center rod 1-1; remove the safety block (not shown in the figure) that is snapped onto the intermediate sleeve 11; press the two handles 13, and the two handles 13 will rotate around the pivot point of the left end pin and gradually move closer to the intermediate sleeve 11, while simultaneously driving the drive arm 14 to rotate synchronously. The right end of arm 14 drives the transmission sleeve 10 and the return spring 9 to move towards the staple cartridge 5 on the left side. This causes the pusher sleeve 8 to drive the annular cutter 7 and the pusher plate 8-1 to move towards the glans cover 1 on the left side. The annular cutter 7 cuts the pad ring 2 and the foreskin tissue in sequence. At the same time, the pusher plate 8-1 fires the staple 15 installed inside the staple mounting hole and inserts it into the foreskin anastomosis position. It then acts with the abutment on the glans cover 1 to suture the foreskin cutting site. Then, the handles 13 on both sides are released. Under the action of the return spring 9, the annular cutter 7 and the pusher sleeve 8 are driven back into the staple cartridge sleeve 6 to complete the foreskin cutting surgery.

[0045] When a traditional circumcision stapler sutures the circumcision site, the pusher and the anvil interact. Because the bottom surface of the staple groove is a planar structure, the two staple legs 15-2 on the staple 15 are directly bent into a straight "I" shape towards the staple plate 15-1 (see appendix). Figure 1 The problem with this bent anastomosis staple is that the two staple feet do not have enough gripping force with the foreskin tissue cutting site, which poses a risk of falling off. In addition, because the staple feet are straight and bent in a "I" shape, the anastomosis staple exerts excessive pressure on the foreskin tissue cutting site, which can easily lead to bleeding.

[0046] This utility model discloses a high-strength circumcision stapler. A spiral groove 1-2a at one end of the bottom surface of the staple groove 1-2 on the glans cover 1 gradually guides one stud 15-2 on the corresponding staple 15 towards the outside of the glans cover 1, forming a shape. A spiral groove 1-2b at the other end of the bottom surface of the staple groove 1-2 gradually guides the other stud 15-2 on the corresponding staple 15 towards the inside of the glans cover 1, forming a shape. This results in the two studs 15-2 on the staple 15 being misaligned and bent towards the staple plate 15-1, forming a 3D "B"-shaped structure (see attached diagram). Figure 11 and attached Figure 12 This significantly increases the space between the staple foot 15-2 and the staple plate 15-1, thereby ensuring a strong fit between the staple and the foreskin tissue cutting site and helping to reduce the squeezing pressure of the staple on the foreskin tissue cutting site, thus improving bleeding.

[0047] This utility model discloses a high-strength circumcision stapler. The handle, drive arm, transmission sleeve, and spring form a spring lever structure, which has better force strength compared with the traditional spring slider push structure. It effectively eliminates or reduces the risk of cracking or deformation of the transmission sleeve when the handle is fired during circumcision surgery. At the same time, it is more effortless to fire the handle during circumcision surgery, and the use is smoother and more comfortable. The overall structure is ingeniously and reasonably designed, with high feasibility for manufacturing and implementation, and strong practicality.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-strength circumcision stapler, comprising a glans cover (1), a staple cartridge (5), a staple cartridge sleeve (6), a ring cutter (7), a staple pusher sleeve (8), a return spring (9), an intermediate sleeve (11), an adjusting nut (12), and two handles (13). A central rod (1-1) is vertically fixed to the center of the right side of the glans cover (1). The central rod (1-1) passes through the staple pusher sleeve (8), the intermediate sleeve (11), and the adjusting nut (12) sequentially from left to right. The staple cartridge sleeve (6) is coaxially sleeved on the outer periphery of the staple pusher sleeve (8), and its right end is fixedly connected to the left end of the intermediate sleeve (11). The staple cartridge (5) is coaxially fixed to the left end of the staple cartridge sleeve (6). The staple cartridge (5) is provided with a plurality of staple mounting holes that pass through its left and right axial ends. The annular cutter (7) is coaxially injection molded and fixed to the inner side of the left end of the staple pusher sleeve (8). The right end of the staple pusher sleeve (8) is coaxially fixed with a connecting tube (8-2). The adjusting nut (12) is screwed onto the threaded section of the right end of the center rod (1-1), and the left end of the adjusting nut (12) abuts against the right end of the intermediate sleeve (11). The return spring (9) is sleeved on the connecting tube (8-2). The two handles (13) are distributed on the outer sides of the intermediate sleeve (11). The left end of the handle (13) is hinged to the outer side of the right end of the staple cartridge sleeve (6). The center rod (1-1) is also slidably sleeved with a transmission sleeve (10). The left end of the transmission sleeve (10) is fixedly connected to the right end of the connecting tube (8-2). The reset spring (9) is limited between the nail cartridge sleeve (6) and the transmission sleeve (10). The intermediate sleeve (11) has two guide slots (11-1) that are located on both sides of its outer peripheral wall and extend along the axial direction. Both handles (13) are fixed with drive arms (14) that gradually extend toward the right end of the intermediate sleeve (11). The right end of the drive arm (14) on one handle (13) passes through a corresponding guide slot (11-1) and abuts against one side of the right end face of the transmission sleeve (10). The right end of the drive arm (14) on the other handle (13) passes through another corresponding guide slot (11-1) and abuts against the other side of the right end face of the transmission sleeve (10).

2. The high-strength circumcision stapler as described in claim 1, characterized in that, The transmission sleeve (10) is a cone-shaped frustum structure with a larger left side and a smaller right side, and the left end of the transmission sleeve (10) is fixedly connected to the right end of the connecting pipe (8-2) by a snap fastener assembly.

3. The high-strength circumcision stapler as described in claim 2, characterized in that, The connecting pipe 2 (8-2) has an annular groove (8-2a) on the outer circumference of its right end. The transmission sleeve (10) has a mounting block (10-1) with planar upper and lower end faces in the middle of its left end. The mounting block (10-1) has a mounting groove (10-2) that runs through both the upper and lower end faces. The mounting block (10-1) has two locking blocks (10-3) on its left end face that extend to the axial center line of the transmission sleeve (10). The two locking blocks (10-3) have arc-shaped grooves (10-3a) on their opposite sides. The transmission sleeve (10) is installed on the right end of the connecting pipe 2 (8-2) by the mounting groove (10-2), and the two locking blocks (10-3) are locked into the annular groove (8-2a) from both sides. The annular groove (8-2a) and the two locking blocks (10-3) on the mounting block (10-1) constitute the first buckle assembly.

4. The high-strength circumcision stapler as described in claim 3, characterized in that, The annular groove (8-2a) is provided with an anti-rotation block (8-2b), and the anti-rotation block (8-2b) is embedded between the two locking blocks (10-3).

5. The high-strength circumcision stapler as described in claim 4, characterized in that, The handle (13) has a clearance groove (13-1) on the left side facing the middle sleeve (11). The right end of one of the drive arms (14) abuts against the rear side of the right end face of the transmission sleeve (10), and the right end of the other drive arm (14) abuts against the front side of the right end face of the transmission sleeve (10). The center rod (1-1) is located between the right ends of the two drive arms (14).

6. The high-strength circumcision stapler as described in claim 5, characterized in that, The right end of the staple cartridge sleeve (6) is coaxially provided with a connecting tube (6-1). The outside of the connecting tube (6-1) is provided with two ear plates (6-2). The right end of the connecting tube (6-1) has two positioning blocks (6-3). The left ends of the two handles (13) are respectively hinged to the corresponding ear plate (6-2) by pins. The left end of the guide groove (11-1) is open. The right end of the connecting tube (6-1) and the left end of the intermediate sleeve (11) are fastened together by a snap fastener assembly. The two positioning blocks (6-3) are inserted and embedded in the left end of the corresponding guide groove (11-1).

7. The high-strength circumcision stapler as described in any one of claims 1 to 6, characterized in that, It also includes a pad ring (2) embedded on the outer periphery of the right end face of the glans cover (1), and the pad ring (2) is coaxially corresponding to the annular cutter (7). A silicone pad (4) is fitted to the left end face of the staple cartridge (5), and a staple cartridge cover (3) is sleeved on the left end of the staple cartridge sleeve (6).

8. The high-strength circumcision stapler as described in claim 7, characterized in that, The left end of the pusher sleeve (8) is provided with a plurality of pusher plates (8-1) spaced around it. The right end face of the glans cover (1) is also provided with a plurality of nail grooves (1-2) distributed around the outer periphery of the pad ring (2). The nail grooves (1-2), pusher plates (8-1) and anastomosis nail mounting holes correspond one to one. The left end of the pusher plate (8-1) is movably inserted into the right end of the corresponding anastomosis nail mounting hole. One end of the bottom surface of the nail groove (1-2) is provided with a spiral groove one (1-2a) for gradually guiding and bending one nail leg (15-2) of the anastomosis nail (15) towards the outside of the glans cover (1). The other end of the bottom surface of the nail groove (1-2) is provided with a spiral groove two (1-2b) for gradually guiding and bending another nail leg (15-2) of the anastomosis nail (15) towards the inside of the glans cover (1).

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