Circumcision stapler

Abstract

The present invention relates to a circumcision stapler, comprising: a shell assembly, a pin support assembly, a cutting assembly, a driving assembly and an indicating assembly; the shell assembly comprises a first shell, a second shell and a fixing bracket structure integrally formed with the first shell; the fixing bracket structure is arranged in the end of the first shell, the fixing bracket structure has a long hole, and the inner wall of the long hole has a plurality of longitudinally arranged grooves; the cutting assembly is sleeved on the outer surface of the fixing bracket structure, and the driving assembly pushes the cutting assembly to move; the end of the second shell is rotatably connected to the tail of the first shell; the indicating assembly is arranged in the second shell. The circumcision stapler can reduce the number of parts and process steps.

Description

Technical Field

[0001] The present invention relates to the field of medical instruments, and in particular to a circumcision stapler. Background Art

[0002] At present, male prepuce is too long or phimosis is mainly removed and anastomosed by a circumcision stapler. In the prior art, some structures of the circumcision stapler include: the anvil assembly is provided with a center rod, and the outer surface of the center rod has a first positioning structure (spline, positioning plane); the cutting assembly has a hollow transmission rod, and the hollow transmission rod is provided with a second positioning structure that cooperates with the first positioning structure. By passing the center rod with the first positioning structure through the hollow transmission rod of the cutting assembly, the first positioning structure and the second positioning structure are closely matched to achieve accurate positioning of the staples and the anvil.

[0003] However, during the firing of the circumcision stapler, the anvil assembly is fixed, and the cutting assembly must move along the anvil assembly to achieve the cutting of the foreskin and the stapling of the wound surface. It can be seen that in order to ensure the smooth sliding of the cutting assembly, the first positioning structure and the second positioning structure cannot be coupled too tightly, which is contradictory to the above positioning requirements.

[0004] In addition, in order to meet the sizes of circumcision staplers used by people of different ages and body shapes, the shell and the stapler sleeve of the circumcision stapler in the prior art are split into separate structures. However, this separate structure increases the number of parts. At the same time, during assembly, in order to ensure the accurate positioning of the shell and the stapler sleeve, multiple tooling fixtures need to be set up, and additional installation process steps need to be added to complete the effective alignment and installation of the stapler sleeve and the shell. In addition, when assembling stapler sleeves of different sizes, the stapler sleeve fixtures need to be constantly replaced, which increases the number of fixtures and working hours. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a circumcision stapler, which can modify the positioning structure to meet different usage requirements, and further reduce the number of parts and process steps.

[0006] The present invention provides the following technical solutions: A circumcision stapler, comprising: a shell assembly, a pin holder assembly, a cutting assembly, a driving assembly and an indicating assembly; the shell assembly comprises a first shell and a second shell; the first shell comprises a first shell end, a fixed support structure and a first shell tail, and the first shell end, the fixed support structure and the first shell tail are integrally formed to form the first shell; the fixed support structure is arranged in the first shell end, the fixed support structure has a long hole for the central rod of the pin holder assembly to pass through, and the inner wall of the long hole has a plurality of longitudinal grooves, and the longitudinal grooves are used to circumferentially position the pin holder assembly; the cutting assembly comprises a cutting body and a plurality of extension arms, the plurality of extension arms bypass the fixed support so that the cutting assembly is sleeved on the outer surface of the fixed support structure, and the tail of the extension arm is provided with a coupling locking structure, and the coupling locking structure is used to couple with the driving assembly; the driving assembly pushes the cutting assembly to move toward the head of the pin holder assembly; the second shell end is rotatably connected to the tail of the first shell, and the indicating assembly is arranged in the second shell.

[0007] Further, the coupling locking structure of the extension arm includes a first groove and a first protrusion.

[0008] Furthermore, the driving assembly includes a movable hollow rod through which the center rod of the dowel seat assembly passes, the movable hollow rod is arranged in the tail portion of the first shell and the side wall of the movable hollow rod has a second groove.

[0009] Furthermore, the movable hollow rod includes a first rod portion and a second rod portion in sequence from the head to the tail, and a boss is formed at the connection between the first rod portion and the second rod portion; the side wall of the first rod portion is provided with a plurality of second protrusions, and the plurality of second protrusions are used for circumferential positioning with the cutting assembly, and the side wall of the second rod portion is provided with a second groove.

[0010] Furthermore, the driving assembly includes a handle, the head of the handle is located in the second groove and when the handle is in a pressed state, the handle drives the movable hollow rod to move toward the end of the first shell.

[0011] Furthermore, the driving assembly further includes a first blocking member, a second blocking member and an elastic body, the first blocking member is arranged on the inner surface of the tail portion of the first shell accommodating the movable hollow rod, and the second blocking member is arranged on the tail portion of the movable hollow rod; the elastic body is arranged on the outer surface of the movable hollow rod between the first blocking member and the second blocking member.

[0012] Further, when the movable hollow rod moves toward the end of the first shell, the first blocking member is fixed, and the second blocking member moves synchronously with the movable hollow rod. At this time, the elastic body is in a contracted state and the movable hollow rod pushes the cutting assembly; or, when the cutting and anastomosis are completed, the elastic body automatically returns to its position and at the same time pushes the second blocking member to move toward the tail of the first shell. At this time, the movable hollow rod moves synchronously toward the tail of the first shell.

[0013] Furthermore, the driving assembly includes a side wing, which is arranged on the side wall of the first shell and is integrally formed with the first shell; the side wing includes a pin hole.

[0014] Furthermore, a nail magazine is provided at the end of the first shell, and the nail magazine has a plurality of nail holes evenly distributed along the circumference, and the angle between the center point of each nail hole and the line connecting the center point of the nail magazine in the same horizontal plane and the long axis of the nail hole is an acute angle.

[0015] Furthermore, the head of the indicating assembly abuts against the tail end of the center rod of the anvil assembly, and the second shell is rotated to pull or push the anvil assembly, so that the indicating assembly moves toward the tail or head of the second shell.

[0016] Furthermore, the indicator assembly includes an indicator rod and a spring, the solid head of the indicator rod abuts against the tail end of the center rod of the pin seat assembly, the spring is arranged at the hollow tail portion of the indicator rod, the side wall of the hollow tail portion is provided with a protrusion, and the side wall of the protrusion is provided with an indication mark.

[0017] Furthermore, an outer surface of the rear portion of the second shell is provided with an identification window, and the identification window is used to display the indication mark for axially positioning the dowel seat assembly.

[0018] Furthermore, a first viewing window opening is disposed on the side wall of the first shell end, and a second viewing window opening is disposed on the side wall of the cutting assembly, and the first viewing window opening at least partially overlaps with the second viewing window opening.

[0019] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0020] In the prior art, the end of the first shell is a stapler sleeve structure, and the tail of the first shell is the main structure of the stapler. Since the end of the first shell and the stapler seat assembly must be set with different diameters according to the diameter of the glans penis, the prior art separately injects the stapler sleeve structure (the end of the first shell) and the main structure of the stapler (the tail of the first shell), and further injects the main structure of the stapler into two half-shell structures. As a result, the positioning structure of the circumferential positioning stapler seat assembly can only be formed on the push nail assembly. This causes excessive dispersion of parts, and multiple positioning and welding are required during the assembly process, which greatly increases the installation time and installation cost. In addition, due to the manufacturing and installation errors between the independent processed parts, the cutting of the foreskin and the molding accuracy of the staples are greatly affected. However, due to the dispersion of the parts of the existing products and the size of the parts inside the shell, the shell structure cannot be integrally formed, because these parts cannot enter the shell from the open end of the integrally formed structure.

[0021] The present invention redesigns the foreskin stapler to form the stapler sleeve, the fixing bracket structure and the housing in one piece, and redesigns the internal accessories so that each part can enter the integrated housing from each opening of the integral molding and be fixed to realize the function of the device.

[0022] In addition, the prior art circumcision stapler adopts a combined fixing method of anvil seat assembly-cutting assembly to achieve the positioning between the anvil seat and the cutting assembly. The specific fixing method is as follows: the anvil seat assembly is provided with a center rod, the outer surface of the center rod is provided with a first positioning structure (spline, positioning plane), and the hollow transmission rod of the cutting assembly is provided with a second positioning structure that cooperates with the first positioning structure. By passing the center rod with the first positioning structure through the hollow transmission rod of the cutting assembly, the first positioning structure cooperates with the second positioning structure to achieve relative position fixation. This mutual fixing relationship determines whether the staples and the staple grooves of the anvil seat can be accurately positioned. Therefore, it is required that the first positioning structure and the second positioning structure cooperate as closely as possible. However, in the process of activating the circumcision stapler, the anvil seat assembly is fixed, and the cutting assembly must move along the anvil seat assembly, thereby pushing the stapler and the cutting knife to achieve the cutting of the foreskin and the stapling of the wound surface. In order to ensure the smooth sliding of the cutting assembly, the first positioning structure and the second positioning structure cannot be coupled too tightly. It can be seen that the needs of the two are contradictory.

[0023] The present invention integrally injection molds the fixed support structure of the positioning nail support assembly with the nail magazine sleeve and the shell, so that the fixed support structure and the cutting assembly are independent of each other, thereby realizing the separation between the fixed structure and the movable structure, overcoming the movement of the nail support assembly relative to the cutting assembly caused by the gap between the first positioning structure of the cutting assembly and the second positioning structure of the nail support assembly in the prior art, thereby avoiding the problem of poor nail formation.

[0024] In summary, the present invention integrates the fixed bracket structure of the positioning anvil assembly with the shell, so that the fixed bracket structure and the cutting assembly are independent of each other, and the separation between the fixed structure and the movable structure is achieved, which can avoid the problem of poor nailing; the stapler sleeve is integrally injection-molded with the shell and the fixed bracket, which can reduce the number of parts, reduce the process steps, and further reduce the processing cost. Furthermore, the present invention adopts an oblique nail setting to reduce the spacing between the staples and effectively avoid bleeding after stapling. An indicator is used to accurately indicate the distance between the anvil assembly and the stapler assembly, and accurately indicate the fixed thickness of the foreskin, avoiding the problem of misfiring due to inadequate fixation of the foreskin. The end of the stapler of the present invention has a large window for observing the fixation of the foreskin, and the application instrument can be used to further fix the failed fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A three-dimensional cross-sectional view of a circumcision stapler provided by an embodiment of the present invention;

[0027] Figure 2 A planar cross-sectional view of a circumcision stapler provided by an embodiment of the present invention;

[0028] Figure 3 for Figure 1 Schematic diagram of the explosion structure;

[0029] Figure 4 A schematic diagram of the three-dimensional structure of a circumcision stapler provided in an embodiment of the present invention.

[0030] Figure 5 A three-dimensional cross-sectional view of a first housing in a circumcision stapler provided in an embodiment of the present invention;

[0031] Figure 6 for Figure 5 a planar cross-sectional view of the first shell;

[0032] Figure 7 A three-dimensional structural diagram of an anvil assembly in a circumcision stapler provided in an embodiment of the present invention;

[0033] Figure 8 for Figure 7 a perspective cutaway view of the anvil assembly;

[0034] Fig. 9 for Figure 3 The enlarged structural diagram of the middle icon 7;

[0035] Fig.10 It is a schematic diagram of the full three-dimensional structure of the nail magazine;

[0036] Fig.11 for Fig.10 A plan view of the oblique arrangement of the nail holes in the nail magazine;

[0037] Fig.12 for Figure 5 a three-dimensional cross-sectional view of the first shell;

[0038] Fig.13 An exploded view of the interior of a first housing in a circumcision stapler provided in an embodiment of the present invention;

[0039] Fig.14 for Fig.13 A top view of the components after assembly;

[0040] Fig.15 A schematic diagram of the structure of a cutting assembly of a circumcision stapler provided in an embodiment of the present invention;

[0041] Fig.16 A schematic structural diagram of a movable hollow rod in a circumcision stapler provided in an embodiment of the present invention;

[0042] Fig.17 This is an internal exploded view of the second shell of the circumcision stapler provided in an embodiment of the present invention.

[0043] Icons: 1-housing assembly, 11-first housing, 12-second housing, 110-fixed bracket structure, 111-long hole, 112-longitudinal groove, 113-first housing end, 114-first housing tail, 115-fixed rib, 13-first window opening, 14-through hole, 2-nail support assembly, 21-bell cover, 22-nail anvil, 23-cutting anvil, 24-extension part, 25-center rod, 250-first positioning structure, 251-second positioning structure, 3-cutting assembly, 31-cutting body, 32-annular knife, 33-nail pusher, 34-extension arm, 35-coupling locking structure, 351-first groove, 352-first bump, 36-second window opening , 4-driving assembly, 41-handle, 42-wing, 420-pin hole, 43-movable hollow rod, 430-second groove, 431-first rod portion, 432-second rod portion, 433-second protrusion, 434-boss, 435-third rod portion, 44-handle protection cover, 45-first blocking member, 46-second blocking member, 461-brim, 460-hollow cylinder, 47-elastic body, 120-annular pin, 121-step, 122-marking window, 5-indicator assembly, 51-indicator rod, 510-solid head, 511-hollow tail, 52-spring, 53-protrusion, 54-nut, 6-end cover, 7-nail magazine, 71-nail hole, 8-protective ring. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] The following will be combined Figures 1 to 17 The technical solution provided by the embodiment of the present invention is described in more detail. Figures 1 to 4 As shown, an embodiment of the present invention provides a circumcision stapler, comprising: a housing assembly 1, an anvil assembly 2, a cutting assembly 3, a driving assembly 4 and an indicating assembly 5. The housing assembly 1 comprises a first shell 11 and a second shell 12, and the tail of the first shell 11 is rotatably connected to the end of the second shell 12. Figure 5 to Figure 6 As shown, the first shell 11 includes a first shell end 113 , a fixing bracket structure 110 and a first shell tail 114 . The first shell end 113 , the fixing bracket structure 110 and the first shell tail 114 are integrally formed to form the first shell 11 .

[0046] The first housing 11 is provided with the anvil assembly 2, the cutting assembly 3 and at least a part of the driving assembly 4, and the second housing 12 is provided with the indicating assembly 5. The tail of the second housing 12 is provided with an identification window 122. The end 113 of the first housing 11 is provided with a nail magazine 7.

[0047] like Figures 7 and 8 As shown, the anvil assembly 2 includes a bell-shaped cover 21 for accommodating the glans penis, an anvil 22 and a cutting anvil 23. An extension portion 24 is provided at the tail of the bell-shaped cover 21, and the bell-shaped cover 21 can be integrally formed with the extension portion 24. A center rod 25 is provided at the tail of the extension portion 24. A first positioning structure 250, such as a spline, a plane structure, etc., is provided on the outer surface of the extension portion 24 for cooperating with the fixed bracket structure 110; a second positioning structure 251, such as a thread, is provided on the outer surface of the tail of the center rod 25 for cooperating with the second shell 12. The diameter of the extension portion 24 is greater than the diameter of the center rod 25. Here, the center rod 25 can be formed by fixing two separate structures, or it can be an integrally formed structure. The extension portion 24 can be a separate structure from the center rod 25, or it can be integrally formed with the extension rod 25.

[0048] like Figures 9 to 11 As shown, the nail magazine 7 has a plurality of nail holes 71 uniformly distributed along the circumferential direction. The angle between the center point of each nail hole 71 and the line connecting the center point of the nail magazine 7 on the same horizontal plane and the long axis of the nail hole 71 is an acute angle, and the optional range of the acute angle is greater than or equal to 70 degrees. The angle between the center point of two adjacent nail holes 71 and the line connecting the center point of the nail magazine 7 ranges from 15 degrees to 20 degrees. It can be understood that each nail hole 71 is arranged obliquely, and the staples in the nail holes 71 are also arranged obliquely. In the case where the edge distance between two adjacent nail holes 71 is constant, the oblique arrangement of the staples can reduce the center distance between the two nail holes 71, and further can increase the number of staples, thereby effectively avoiding bleeding after stapling. Preferably, the center distance between the two nail holes 71 has a numerical range of 3.5 mm to 6 mm. The shape of the nail hole 71 is arranged to match the shape of the staple and prevents the staple from changing direction. The cross-section of the nail hole can be A protective ring 8 is provided on the stapler outlet side of the stapler magazine 7 to prevent the stapler from being separated from the stapler magazine 7; the protective ring 8 is a silicone ring with an easy-tear structure, which can remove the excess easy-tear structure after cutting, and the remaining part will be retained on the wound surface with the stapler to protect the wound surface, evenly distribute the staple force, and finally assist in removing the stapler.

[0049] like Fig.12 As shown, a fixed support structure 110 is provided on the inner wall of the end portion 113 of the first shell body, and the fixed support structure 110 is an integrally formed structure with the first shell body 11. The fixed support structure 110 has a long hole 111 for the center rod of the dowel assembly to pass through, and the long hole 111 is coaxial with the first shell body 11. The diameter of the long hole 111 is equal to the diameter of the center rod 25, and the axial length of the long hole 111 is less than or equal to the axial length of the first positioning structure 250. The fixed support structure 110 also includes a plurality of fixed ribs 115, and the fixed ribs 115 are used to support the fixed support structure 110. The fixed ribs 115 can be 2 or more, for example, 4.

[0050] The inner wall of the long hole 111 has a plurality of longitudinal grooves 112, and the longitudinal grooves 112 are used in conjunction with the first positioning structure 250 on the surface of the center rod 25 to circumferentially limit the anvil assembly 2, so that when the center rod 25 is inserted into the fixed support structure 110, it can only move axially but not rotate circumferentially, thereby ensuring the accurate positioning of the anvil 22 and the staples, and further ensuring that the staples can be correctly formed.

[0051] Furthermore, the side wall of the first housing end 113 is provided with a first viewing window opening 13, which allows the user to observe the fixation of the foreskin or directly perform a fixation remedial operation on the foreskin. The viewing window opening 13 is a through hole with a relatively large area. In the case of a fixation failure, the user can directly perform a fixation remedial operation on the foreskin through the through hole, for example, by applying an instrument to the foreskin through the through hole to fix it again. Preferably, the side wall of the first housing end 113 is provided with two symmetrical first viewing window openings 13.

[0052] like Figure 13 to Figure 14 As shown, the cutting assembly 3 includes a cutting body 31, an annular knife 32, a nail pushing part 33 and a plurality of extension arms 34. A plurality of mounting long holes 30 are formed between the plurality of extension arms 34. The extension arms 34 bypass the fixed support structure 110, so that the cutting assembly 3 is sleeved on the outer surface of the fixed support structure 110 through the mounting long holes 30. The tail of the extension arm 34 is exposed outside the long hole 111. The tail of the extension arm 34 is provided with a coupling locking structure 35 so as to couple with the end of the driving assembly 4. Fig.15 As shown, the coupling locking structure 35 of the extension arm 34 includes a first groove 351 and a first protrusion 352 .

[0053] The cutting body 31, the nail pushing part 33 and the extension arm 34 can be integrally formed. The cutting body 31 is cylindrical, and the outer contour of the extension arm 34 is substantially a hollow truncated cone. The side wall of the cutting assembly 3 is provided with a second window opening 36. Since the foreskin is located inside the cutting assembly, the first window opening 13 and the second window opening 36 at least partially overlap. Preferably, the first window opening 13 and the second window opening 36 are through holes of the same size.

[0054] The annular knife 32 is fixed to the hollow chamber of the cutting body 31. The nail pushing portion 33 is disposed at the end of the cutting body 31 and includes a plurality of long nail pushing pieces, each of which is inserted from one side of the nail hole 71 to push the staples out from the other side of the nail hole 71 and cooperate with the nail anvil 22 to bend the staples to a suitable angle, thereby tightening the wound surface.

[0055] like Fig.16 As shown, the driving assembly 4 includes a handle 41, a side wing 42 and a movable hollow rod 43. The side wing 42 is arranged on the side wall of the first shell 11 and is integrally formed with the first shell 11. Two side wings 42 are respectively arranged on both sides of the first shell 11, and pin holes 420 are arranged on the side wings 42. The handle 41 is hinged between the two side wings 42 through the pin holes 420. The head of the handle 41 is a duckbill structure, and the duckbill structure protrudes from the head of the handle 41. Further, a protective cover 44 is arranged on the outside of the handle 41.

[0056] The movable hollow rod 43 is partially structured in the tail portion 114 of the first shell. When the center rod 25 of the dowel assembly 2 is inserted into the first shell 11, it passes through the long hole 111 and the movable hollow rod 43 in sequence. The side wall of the movable hollow rod 43 has a second groove 430. The side wall of the first shell 11 corresponding to the second groove 430 has a through hole 14. The head of the handle 41 is located in the second groove 430 through the through hole 14. The movement distance of the movable hollow rod 43 is related to the pressable height of the handle 41 from the shell assembly 1. Here, the second groove 430 can also be a through hole, as long as it can clamp the head of the handle 41.

[0057] Specifically, the movable hollow rod 43 includes a first rod portion 431 and a second rod portion 432 from the head to the tail, and a boss 434 is formed at the connection between the first rod portion 431 and the second rod portion 432, and the boss 434 is used to contact the tail of the cutting assembly 3 and push the cutting assembly 3. The side wall of the first rod portion 431 is provided with a second protrusion 433, and the second protrusion 433 can be coupled with the coupling locking structure 35 of the extension arm 34, and is used to perform circumferential positioning of the cutting assembly 3. When installing the movable hollow rod 43, the second protrusion 433 is inserted into the gap between the coupling locking structures 35 from the end of the installation slot 30, and then rotated to move the second protrusion 433 to the first protrusion 353 of the first boss 351, and then the rotation is stopped. Then, the restoring force of the elastic body 47 causes the second protrusion 433 to fall into the first groove 352, and the coupling locking is realized; so that during the movement of the movable hollow rod 43, the cutting assembly 3 can only move axially but not circumferentially. The number of the second protrusions 433 is not limited, and can be the same as the number of the extension arms 34 at most. The side wall of the second rod portion 432 is provided with a second groove 430. The first rod portion 431 and the second rod portion 432 are an integrally formed structure.

[0058] Furthermore, the movable hollow rod 43 includes a third rod portion 435 disposed at the tail of the second rod portion 432, and the diameter of the third rod portion 435 is smaller than that of the second rod portion 432. The outer surface of the third rod portion 435 has threads.

[0059] Furthermore, the driving assembly 4 includes a first blocking member 45 , which is disposed on the inner surface of the first shell tail portion 114 accommodating the movable hollow rod 12 , and the first blocking member 45 is an annular ring, which is integrally formed with the first shell 11 .

[0060] Further, the driving assembly 4 includes a second blocking member 46, which includes a hollow cylinder 460 and a brim 461 disposed on the outer wall of the head of the hollow cylinder 460. The inner wall of the head of the hollow cylinder 460 has threads, and the second blocking member 46 cooperates with the third rod 435 through the threads. At this time, the maximum diameter of the second blocking member 46 (the sum of the width of the brim 461 and the diameter of the hollow cylinder 460) is greater than the diameter of the second rod 432.

[0061] Furthermore, the driving assembly 4 includes an elastic body 47, which is wound around the outer surface of the movable hollow rod 43 between the first blocking member 45 and the second blocking member 46. When the handle 41 is in a pressed state, the handle 41 drives the movable hollow rod 43 to move toward the end of the first housing 11, and at the same time, the boss 434 pushes the cutting assembly 3 to move. During the pressing process, the second blocking member 46 moves with the movable hollow rod 43, while the first blocking member 45 is fixed, so the elastic body 47 is compressed; when the handle 41 is released, the elastic body 47 returns to its original position, and during the return process, the elastic body 47 pushes the second blocking member 46 to move in the reverse direction to the initial position, and at the same time, the second blocking member 46 drives the movable hollow rod 43 to move in the reverse direction together.

[0062] like Fig.17 As shown, the second shell 12 has a hollow chamber. The head of the second shell 12 is provided with an annular pin 120, which is inserted into the gap between the outer surface of the hollow cylinder 460 of the second blocking member 46 and the first shell 11, so that the first shell 11 and the second shell 12 are connected in a rotatable manner. The inner wall of the second shell 12 has a step 121, which is used to block the movement of the indication component 5. The inner surface of the tail of the second shell 12 has a thread, which cooperates with the end cover 6 through the thread. The outer surface of the tail of the second shell 12 is provided with an identification window 122, and the anvil assembly 2 can be axially positioned according to the relative relationship between the identification window 122 and the indication mark (not shown in the figure). Of course, the position of the identification window 122 is not limited to the above, as long as it can cooperate with the indication component 5 to accurately indicate the distance between the anvil assembly 2 and the nail magazine 7.

[0063] Furthermore, the middle side wall of the second housing 12 is concave, and the concave position matches the tail of the handle 41 so that the handle has a larger pressing height.

[0064] Further, the second housing 12 includes a nut 54, which is fixed to the inner wall of the end of the second housing 12 and moves synchronously with the second housing 12. The nut 54 is used to cooperate with the second positioning structure 251 of the center rod 25 to finally achieve axial positioning of the anvil assembly 2.

[0065] The indicating assembly 5 is arranged in the hollow chamber of the second shell 12, and is used to indicate the firing position of the circumcision stapler. The indicating assembly 5 includes an indicating rod 51 and a spring 52, wherein the indicating rod 51 has a solid head 510 and a hollow tail 511. The spring 52 is arranged in the hollow tail 511 of the indicating rod 51. In the initial state, the length of the spring 52 is greater than the axial length of the hollow tail 511 of the indicating rod 51. The side wall of the hollow tail 511 is provided with a protrusion 53, preferably an annular protrusion. The protrusion 53 moves axially in the identification window 122, and the maximum movement position is the step 121 in the second shell 12. The outer surface of the protrusion 53 of the indicating rod 51 is provided with an indicating mark (not shown in the figure). The indicating mark can be an identifiable mark such as overall coloring, line, arrow or ridge. During the movement of the indicating rod 51, the indicating mark can be seen through the identification window 122.

[0066] The solid head 510 contacts the rear end of the center rod 25 of the anvil assembly 2. When the second shell 12 is rotated, due to the interaction between the nut 54 and the second positioning structure 251, the anvil assembly 2 gradually moves toward the rear end of the second shell 12, pushing the indicator rod 51 to move toward the rear end of the second shell 12, and the spring 52 of the hollow tail 511 is squeezed by the indicator rod 51, and the indicator mark gradually moves from a position away from the mark window 122 to the mark window 122. If the indicator mark fills the mark window 122, or the indicator mark can provide sufficient indication, the second shell 12 is further rotated until it cannot be rotated further. At this time, the distance between the anvil 22 on the anvil assembly 2 and the nail magazine 7 is appropriate, and firing can be started.

[0067] During the circumcision and anastomosis operation, the glans penis is first placed in the cavity of the bell-shaped cover 21, and the foreskin is fixed to the extension portion 24 with medical thread or cable tie. The anvil assembly 2 with the foreskin fixed is inserted into the cutting assembly 3 of the stapler, and the center rod 25 is inserted into the long hole 111 of the fixed support structure 110, and contacts the head of the indicator rod 51 after passing through the long hole 111 and the movable hollow rod 43. After the anvil assembly 2 is inserted tightly, the distance between the anvil assembly 2 and the staple cartridge 7 is located by the identification window 122 and the indicator mark. When the indicator mark 54 fills the identification window 122 and the second shell 12 cannot be rotated further, the rotation of the second shell 12 is stopped. Remove the safety, then press the handle 41, push the movable hollow rod 43 through the head of the handle 41, and at the same time, the movable hollow rod 43 pushes the cutting assembly 3 to move toward the bell-shaped cover 21; the annular knife 32 moves with the cutting assembly 3, and cooperates with the cutting anvil 23 to cut off the excess foreskin; at the same time, the staple pusher extends into the staple hole 71 to push the staple out; the staple pusher cooperates with the staple anvil 22 to extrude the staple into shape, thereby closing the foreskin wound after the cut.

[0068] Finally, the circumcision stapler provided by the present invention integrates the fixed support structure of the positioning nail support assembly with the shell, so that the fixed support structure and the cutting assembly are independent of each other, the separation between the fixed structure and the movable structure is realized, and a stable center rod fixing structure is provided, which can avoid the problem of poor nailing; second, the staple magazine sleeve, the fixed support structure and the shell are integrally injection molded, which can reduce the number of parts, reduce the process steps, and further reduce the processing cost; third, the oblique nail setting is adopted to reduce the spacing between the staples, and effectively avoid bleeding after stapling; fourth, the identification window and the indicator component are adopted to accurately indicate the distance between the nail support assembly and the staple magazine assembly, and accurately indicate the fixed thickness of the foreskin, so as to avoid the problem of misfiring caused by inadequate fixation of the foreskin; fifth, a first window opening is provided at the end of the first shell, so as to observe the fixation of the foreskin, and at the same time, if the fixation of the foreskin fails, it can be further fixed by applying an instrument.

[0069] Unless otherwise stated, any technical solution disclosed in the present invention disclosed above, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range, and any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many implementable numerical values. Since there are too many numerical values ​​to be exhaustive, the present invention discloses some numerical values ​​to illustrate the technical solution of the present invention, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the present invention.

[0070] If the words "first", "second" and so on are used in this article to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of description to distinguish the components. Unless otherwise stated, the above words have no special meaning.

[0071] At the same time, if the above-mentioned invention discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0072] In addition, the terms used in any technical solution disclosed in the present invention to indicate positional relationships or shapes include states or shapes that are similar, similar or close to them unless otherwise stated. Any component provided by the present invention may be assembled from multiple separate components or may be a separate component manufactured by an integrated molding process.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A circumcision stapler, characterized in that: include: A housing assembly, an anvil assembly, a cutting assembly, a driving assembly and an indicating assembly; the housing assembly comprises a first housing and a second housing; The first shell comprises a first shell end, a fixing bracket structure and a first shell tail, wherein the first shell end, the fixing bracket structure and the first shell tail are integrally formed to form the first shell; the fixing bracket structure is arranged in the first shell end, and the fixing bracket structure has a long hole for the central rod of the anvil seat assembly to pass through, and the inner wall of the long hole has a plurality of longitudinal grooves, and the longitudinal grooves are used to perform circumferential positioning of the anvil seat assembly; The cutting assembly comprises a cutting body and a plurality of extension arms, the plurality of extension arms bypassing the fixed bracket so that the cutting assembly is sleeved on the outer surface of the fixed bracket structure, the tail of the extension arm is provided with a coupling locking structure, the coupling locking structure is used to couple with the driving assembly; the driving assembly pushes the cutting assembly to move toward the head of the anvil assembly; The end of the second shell is rotatably connected to the tail of the first shell, and the indicating assembly is disposed in the second shell; The drive assembly includes a movable hollow rod through which the center rod of the anvil assembly passes; The driving assembly further includes a first blocking member, a second blocking member and an elastomer, the first blocking member is arranged on the inner surface of the tail portion of the first shell accommodating the movable hollow rod, and the second blocking member is arranged on the tail portion of the movable hollow rod; the elastomer is arranged on the outer surface of the movable hollow rod between the first blocking member and the second blocking member; the coupling locking structure of the extension arm includes a first groove and a first protrusion.

2. The circumcision stapler according to claim 1, characterized in that: The movable hollow rod is arranged in the tail portion of the first shell and the side wall of the movable hollow rod has a second groove.

3. The circumcision stapler according to claim 2, characterized in that: The movable hollow rod includes a first rod portion and a second rod portion in sequence from the head portion to the tail portion, and a boss is formed at the connection between the first rod portion and the second rod portion; a plurality of second protrusions are provided on the side wall of the first rod portion, and the plurality of second protrusions are used for circumferential positioning with the cutting assembly, and a second groove is provided on the side wall of the second rod portion.

4. The circumcision stapler according to claim 2, characterized in that: The driving assembly further comprises a handle, the head of the handle is located in the second groove and when the handle is in a pressed state, the handle drives the movable hollow rod to move toward the end of the first shell.

5. The circumcision stapler according to claim 2, characterized in that: When the movable hollow rod moves toward the end of the first shell, the first blocking member is fixed, and the second blocking member moves synchronously with the movable hollow rod. At this time, the elastic body is in a contracted state and the movable hollow rod pushes the cutting assembly; or, after the cutting and anastomosis are completed, the elastic body returns to its position and simultaneously pushes the second blocking member to move toward the tail of the first shell. At this time, the movable hollow rod moves synchronously toward the tail of the first shell.

6. The circumcision stapler according to claim 1, characterized in that: The driving assembly includes a side wing, which is arranged on the side wall of the first shell and is integrally formed with the first shell; the side wing includes a pin hole.

7. The circumcision stapler according to claim 1, characterized in that: A nail magazine is provided at the end of the first shell, and the nail magazine has a plurality of nail holes evenly distributed along the circumference, and an angle between a line connecting the center point of each nail hole and the center point of the nail magazine in the same horizontal plane and the long axis of the nail hole is an acute angle.

8. The circumcision stapler according to claim 1, characterized in that: The head of the indicating assembly abuts against the tail end of the center rod of the anvil assembly, and the second shell is rotated to pull or push the anvil assembly, so that the indicating assembly moves toward the tail or head of the second shell.

9. The circumcision stapler according to claim 8, characterized in that: The indicator assembly includes an indicator rod and a spring. The solid head of the indicator rod abuts against the tail end of the center rod of the anvil assembly. The spring is arranged at the hollow tail of the indicator rod. The side wall of the hollow tail is provided with a protrusion, and the side wall of the protrusion is provided with an indicator mark.

10. The circumcision stapler according to claim 9, characterized in that: An outer surface of the rear portion of the second shell is provided with an identification window, and the identification window is used to display the indication mark for axially positioning the dowel seat assembly.

11. The circumcision stapler according to claim 1, characterized in that: A first viewing window opening is disposed on the side wall of the first shell end, and a second viewing window opening is disposed on the side wall of the cutting assembly. The first viewing window opening at least partially overlaps with the second viewing window opening.

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