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CN-122004972-A - Assembling method of jaw assembly of anastomat

CN122004972ACN 122004972 ACN122004972 ACN 122004972ACN-122004972-A

Abstract

The invention provides an assembling method of a jaw assembly of an anastomat, which comprises the steps of firstly loading a lower joint block into a mounting groove of a nail box base and fixedly connecting the lower joint block, then mounting a safety elastic sheet, mounting a cutting knife and enabling a safety trigger part of the cutting knife to be in butt joint with the safety elastic sheet, butting the upper joint block with the lower joint block, sleeving a spring on a guide pin column of the nail box base, enabling an opening at the rear end of the nail abutting seat to be aligned with an upper guide block of the cutting knife and simultaneously pressing the spring, enabling the upper guide block to reach the upper part of a horizontal holding surface through the opening, enabling shaft holes of the nail abutting seat to be aligned with shaft holes on a cutter bar conductor and two side walls of the nail box base, and then inserting two rotating pins from two sides. According to the assembling method of the jaw assembly of the anastomat, provided by the invention, the influence of the spring on the assembling can be overcome, the nail supporting seat and the cutting knife are assembled, and meanwhile, the connecting force of the upper guide block of the cutting knife to the nail supporting seat is utilized to press the spring, so that the spring can be fixedly installed in the assembling process, and the assembling of the jaw assembly of the whole anastomat is further completed.

Inventors

  • XIE CHENGYUAN

Assignees

  • 智生源(无锡)科技有限公司

Dates

Publication Date
20260512
Application Date
20260409

Claims (10)

  1. 1. A method of assembling a stapler jaw assembly, comprising: s1, providing a nail box base (20) and a lower joint block (40), and loading the lower joint block (40) into a mounting groove of the nail box base (20) and fixedly connecting the lower joint block; s2, providing a safety elastic piece (92), and loading the safety elastic piece (92) into a second gap between the lower joint block (40) and the mounting groove of the nail box base (20); S3, providing a cutting knife (50), loading a lower guide block (51 b) of the cutting knife into an opening at the front end of a lower guide groove (21) of a nail box base (20), and then pulling a cutter bar (52) backwards along the lower guide groove (21) to enable a safety triggering part of the cutting knife (50) to be in butt joint with a safety shrapnel; S4, providing an upper joint block (30), butting the upper joint block (30) with a lower joint block (40), aligning the shaft holes of the cutter bar conductors (31) at the front end of the upper joint block (30) with the shaft holes on the two side walls of the nail box base (40), and reserving a gap between the cutter bar conductors (31) and the nail box base (40) to install the nail abutting seat (10); S5, providing a spring (22), and sleeving the spring (92) on a guide pin (23) of the nail box base (20); s6, providing a nail supporting seat (10), aligning an opening at the rear end of the nail supporting seat (10) with an upper guide block (51 a) of the cutting knife (50) and pressing a spring at the same time, so that the upper guide block (51) reaches the upper part of the horizontal holding surface (11 b) through the opening; S7, aligning the shaft holes of the nail supporting seat (10) with the shaft holes on the two side walls of the cutter bar conductor (31) and the nail box base (40), and then inserting two rotating pins from two sides.
  2. 2. The method of assembling a stapler jaw assembly according to claim 1, wherein step S1 includes threading a lower support post (42) of the lower joint block (40) through a post hole in the rear end of the magazine base (20) and exposing to align pin holes in the lower joint block (40) and the magazine base (20) and then inserting through the cotter pin into the pin holes of the lower joint block (40) and the magazine base (20).
  3. 3. The method of assembling a stapler jaw assembly according to claim 2, wherein step S4 comprises aligning two vertical pin holes of the upper joint block (30) and the lower joint block (40) and then inserting two vertical connecting pins into the two vertical pin holes.
  4. 4. The assembling method of the jaw assembly of the anastomat according to claim 3, wherein the step S6 is further characterized in that an upper guide block (51 a) of the cutting knife is abutted with a horizontal holding surface (11 b) of the nail abutting seat, the front end of the nail abutting seat is opened upwards, the rear end is pressed by the upper guide block (51 a) to the nail box seat so as to press the spring (22), the spring (22) is compressed on the guide pin (23), and the compressed length of the spring (22) is smaller than the distance between the abutting surface of the nail abutting seat (10) and the bottom surface of the mounting groove of the nail box seat (20) when the jaw assembly of the anastomat is closed.
  5. 5. The assembling method of the jaw assembly of the anastomat according to claim 4, wherein the jaw assembly of the endoscope anastomat comprises a nail abutting seat (10) and a nail box base (20), wherein the nail box base (20) is connected with a driving rod through a joint structure and can swing left and right around a supporting shaft post of the joint structure, the rear end of the nail abutting seat (10) is rotatably connected with a shaft hole of the nail box base (20) through a rotating pin (91), an upper guide groove (11) is arranged on the nail abutting seat (10), the rear end of the upper guide groove (11) is of an opening structure, a pressing inclined surface (11 a) and a horizontal holding surface (11 b) which are inclined downwards are arranged at positions close to the opening of the upper guide groove (11), a cutting knife (50) can enter the horizontal holding surface of the upper guide groove (11) from a notch, a vertical guide pin (23) is fixedly connected inside the nail box base (20) between the rotating shaft and the nail box fixing position, a spring (22) is sleeved on the guide pin (23), and the top of the spring (22) abuts against the inside of the nail box (10) to form elastic force to press the nail abutting seat (10).
  6. 6. The assembling method of the jaw assembly of the anastomat according to claim 5, wherein the joint structure comprises an upper joint block (30) and a lower joint block (40), wherein the lower joint block (40) is installed in an installation groove of the nail box base (20), the upper joint block (30) is in up-down butt joint with the lower joint block (40), a cutter bar conductor (31) at the front end of the upper joint block (30) is connected in the nail abutting seat (10) to form a support for the two sides of an upper guide groove (11) of the nail abutting seat (10), and the cutter bar conductor (31) is also connected with the rotating pin (91) to fix the cutter bar conductor (31) with the nail box base (20).
  7. 7. The assembling method of the jaw assembly of the anastomat according to claim 5, wherein two sides of the rear end of the nail supporting seat (10) are respectively provided with an inclined abutting part (12), and when the nail supporting seat (10) is sprung by the spring (22), the abutting part (12) abuts against the vertical abutting surface (32) at the front end of the upper joint block (30); The rear end of the abutting part (12) close to the inner side surface of the cutting cutter bar is provided with an inclined surface (12 a).
  8. 8. The assembling method of the jaw assembly of the anastomat according to claim 7, wherein the front end of the upper joint block (30) is a cutter bar conductor (31) with a cutter bar guide groove (31 a), shaft holes are respectively arranged on the side walls of the cutter bar conductor (31) and the staple cartridge bases (20) at the two sides, shaft holes are respectively arranged on the two side walls at the rear end of the staple supporting seat (10), the rotary pin (91) is inserted into the shaft holes of the staple supporting seat (10), the staple cartridge bases (20) and the cutter bar conductor (31), and the two side walls of the staple supporting seat (10) are clamped between the cutter bar conductor (31) and the side walls of the staple cartridge bases at the two sides.
  9. 9. The assembling method of the jaw assembly of the anastomat according to claim 7, wherein the front end of the lower joint block (40) is provided with a convex structure (41), a second gap is formed between the lower part of the convex structure (41) and the mounting groove of the cartridge base (20), the safety elastic sheet (92) is clamped in the second gap, a first gap is formed between the lower part of the cutter bar conductor (31) and the mounting groove of the cartridge base (20), and the size of the first gap is larger than that of the second gap so as to allow the safety elastic sheet (92) to elastically deform in the first gap.
  10. 10. The method for assembling a jaw assembly of a stapler according to claim 5, wherein the cutter (50) comprises a cutter body (51) and a cutter bar (52), wherein the cutter body (51) comprises an upper guide block (51 a), a lower guide block (51 b) and a safety block (51 c), wherein the upper guide block (51 a) and the lower guide block (51 b) are separated from the upper end and the lower end of the conductor (51), and the safety block (51 c) is positioned above the lower guide block (51 b) and keeps a space with the lower guide block (51 b); The nail box base (20) is provided with a lower guide groove (21) parallel to the upper guide groove (11), an upper guide block (51 a) is in sliding connection with a guide rail at the upper part of the upper guide groove (11), a lower guide block (51 b) is in sliding connection with a guide rail at the lower part of the lower guide groove (21), a bump (21 a) is arranged at the upper part of the lower guide groove (21) corresponding to the position where the pressing inclined surface (11 a) is engaged with the guide rail at the upper part of the upper guide groove (11), and the distance between the upper surface of the bump (21 a) and the guide rail surface at the lower part of the lower guide groove (21) is smaller than the distance between a safety block (51 c) and the lower guide block (51 b), so that when the cutting knife (50) is triggered by the safety shrapnel (92) to shift downwards, the safety block (51 c) is abutted with the bump (21 a).

Description

Assembling method of jaw assembly of anastomat Technical Field The invention relates to the technical field of interventional medical equipment, in particular to an assembling method of a jaw assembly of an anastomat. Background The existing anastomat has a separable structural design between the nail supporting seat and the cutting knife. The separable structural design is that when the nail propping seat is opened, the nail propping seat is backwards and upwards overturned at the same time, at the moment, the cutting knife is separated from the notch of the nail propping seat, no direct connection relation exists between the nail propping seat and the cutting knife, the positions of the nail propping seat are not interfered, when the nail propping seat is pushed forward by the external sleeve and downwards closed at the same time, the notch on the nail propping seat falls into the upper guide block of the cutting knife, and then when the cutting knife is driven forward, the cutting knife is pushed forward along the long straight guide groove of the nail propping seat, and at the moment, the matching relation is formed between the cutting knife and the nail propping seat. The normal state of the stapler is the open state of the anvil, that is to say when the stapler jaw assembly is assembled, there is no need to consider the assembly problem between the anvil and the cutting blade. Only in the working process of the anastomat, the nail propping seat and the cutting knife have a matching relationship. The jaw assembly of the anastomat designed by the applicant is structurally different from the existing anastomat, so that the assembling method is also different, and the assembling problem of the jaw assembly of the anastomat with different structures needs to be solved. In particular, the jaw assembly of the anastomat designed by the applicant is always in a mutually matched state, and the nail supporting seat and the cutting knife are not in a mutually separated state, so that a more optimized assembly method is required to be designed, and the problem of assembly of the jaw assembly of the anastomat under a novel structure is solved. Disclosure of Invention The technical problem to be solved by the embodiment of the invention is to provide an assembling method of a jaw assembly of an anastomat, which solves the assembling problem of the jaw assembly of the anastomat with the novel structure. In order to solve the above technical problems, the present invention provides an assembling method of a jaw assembly of a stapler, including: s1, providing a nail box base (20) and a lower joint block (40), and loading the lower joint block (40) into a mounting groove of the nail box base (20) and fixedly connecting the lower joint block; s2, providing a safety elastic piece (92), and loading the safety elastic piece (92) into a second gap between the lower joint block (40) and the mounting groove of the nail box base (20); S3, providing a cutting knife (50), loading a lower guide block (51 b) of the cutting knife into an opening at the front end of a lower guide groove (21) of a nail box base (20), and then pulling a cutter bar (52) backwards along the lower guide groove (21) to enable a safety triggering part of the cutting knife (50) to be in butt joint with a safety shrapnel; S4, providing an upper joint block (30), butting the upper joint block (30) with a lower joint block (40), aligning the shaft holes of the cutter bar conductors (31) at the front end of the upper joint block (30) with the shaft holes on the two side walls of the nail box base (40), and reserving a gap between the cutter bar conductors (31) and the nail box base (40) to install the nail abutting seat (10); S5, providing a spring (22), and sleeving the spring (92) on a guide pin (23) of the nail box base (20); s6, providing a nail supporting seat (10), aligning an opening at the rear end of the nail supporting seat (10) with an upper guide block (51 a) of the cutting knife (50) and pressing a spring at the same time, so that the upper guide block (51) reaches the upper part of the horizontal holding surface (11 b) through the opening; S7, aligning the shaft holes of the nail supporting seat (10) with the shaft holes on the two side walls of the cutter bar conductor (31) and the nail box base (40), and then inserting two rotating pins from two sides. Step S1 includes passing a lower support post (42) of the lower joint block (40) through a post hole at the rear end of the magazine base (20) and exposing to align pin holes on the lower joint block (40) and the magazine base (20), and then inserting through the cotter pin into the pin holes of the lower joint block (40) and the magazine base (20). Step S4 includes aligning two vertical pin holes of the upper joint block (30) and the lower joint block (40) and then inserting two vertical connecting pins into the two vertical pin holes. Step S6 also comprises that an upper guide block (51 a) of the