Manufacturing method of electric endoscope linear type cutting anastomat

Abstract

The invention discloses a manufacturing method of an electric endoscope linear type cutting anastomat. The manufacturing method comprises the following steps: S1, preparing raw materials; s2, assembling a handle assembly, a gun barrel assembly, a battery assembly, a cartridge nail assembly, a steering positioning assembly and a front head assembly; s3, carrying out general assembly on the electric endoscope linear type cutting anastomat, namely sequentially completing the assembly of a steering positioning assembly and a main body, the assembly of a front head assembly, parts and the main body, the assembly of a front head outer tube connecting and fixing part, the assembly of a buckle outer wrapping part, the assembly of a gun barrel assembly and a handle assembly, the assembly of a support frame end cover and the assembly of a shell; and S4, packaging the electric endoscope linear type cutting anastomat which is generally assembled. According to the assembly method, the assembly accuracy of a worker can be guaranteed by refining the assembly of a plurality of parts, the method is easy to implement and simple and convenient to operate, the assembly efficiency is improved, and the technical problem and difficulty that the assembly efficiency of the electric endoscope linear type cutting anastomat is not high are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing an electric laparoscope linear cutting stapler, and more specifically to a manufacturing method of an electric laparoscope linear cutting stapler. Background Art

[0002] The electric laparoscopic linear cutting stapler is a medical device used in surgical operations. It combines cutting and suturing functions and is mainly used in endoscopic or minimally invasive surgeries. It has the characteristics of minimally invasiveness, versatility, precise control, wide range of applications, and reduced risk of complications.

[0003] The assembly process of an electric laparoscopic linear cutting stapler is complicated, and generally the assembly efficiency is determined by the operator's proficiency, resulting in low overall assembly efficiency.

[0004] In order to speed up the assembly process of the electric laparoscopic linear cutting stapler, we used a series of tooling equipment, including trigger assembly tooling, gear pressing tooling, electromagnetic welding tooling, electromagnetic detection tooling, slider pin pressing tooling, EMC testing tooling, shell pressing tooling, etc. Through the use of a series of tooling, the assembly efficiency of the assembly line is significantly accelerated. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a method for manufacturing an electric laparoscopic linear cutting stapler, which is easy to implement, simple to operate, improves the assembly efficiency, and solves the technical problems and difficulties of low assembly efficiency of the electric laparoscopic linear cutting stapler.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A method for manufacturing an electric laparoscope linear cutting stapler includes the following manufacturing steps: S1. Raw material preparation: firstly, raw materials are purchased and tested, and qualified materials are put into storage. During the manufacturing process, corresponding parts are taken out from the warehouse, and the parts are cleaned, finely washed, and dried after being removed from the outer packaging;

[0008] S2. Assemble the handle assembly, gun rod assembly, battery assembly, magazine nail assembly, steering positioning assembly, and front head assembly;

[0009] S3. General assembly of the electric laparoscopic linear cutting stapler: complete the assembly of the steering and positioning assembly and the main body, the assembly of the front head assembly and parts and the main body, the assembly of the front head outer tube connection and fixing parts, the assembly of the buckle outer parts, the assembly of the gun rod assembly and the handle assembly, the assembly of the support frame end cover, and the assembly of the shell in sequence;

[0010] S4. Pack the assembled electric laparoscopic linear cutting stapler.

[0011] Preferably, the assembly of the battery assembly in step 2 includes the following installation steps:

[0012] 2.1.1) Assemble the battery grid, CR123A Panasonic battery, battery shell, and battery connection long piece in sequence, and spot weld each long piece evenly;

[0013] 2.1.2) Place the battery connection short piece and spot weld both ends of the short piece evenly;

[0014] 2.1.3) Place the overcurrent protection sheet, spot weld both ends of the overcurrent protection sheet evenly, check that there is no over-welding or cold welding at the welding points, and that the welding points are full and even;

[0015] 2.1.4) After setting the equipment parameters, place the battery pack to be welded into the mold and fix it. Press the green start buttons on both sides at the same time to start welding and press it with an ultrasonic plastic welder. After welding is completed, check the welding effect of the battery pack to ensure that the welding seam is uniform, without over-welding, overflowing glue, or false welding warping.

[0016] Preferably, the assembly of the cartridge nail assembly in step 2 includes the following installation steps:

[0017] 2.2.1) Assemble the left nail pusher: prepare the materials to be assembled, and place them neatly with the reverse side of the nail magazine facing upwards; take the nail magazines in order, clamp the front end of the left nail pusher with bent tweezers, and install them one by one from the fork opening to the round head in the corresponding position of the nail magazine, and keep the nail pusher stable and install it into the nail magazine hole;

[0018] 2.2.2) Assembly of the right nail pusher: Take the nail magazines in order, clamp the front end of the right nail pusher with bent tweezers, and install them one by one into the corresponding positions of the nail magazine from the fork opening toward the round head. Keep the nail pusher stable and install it into the nail magazine hole;

[0019] 2.2.3) Assembly of the external nail pusher: Take the nail magazines in order, clamp the front end of the external nail pusher with curved tweezers, and install them one by one into the corresponding positions of the nail magazine from the fork opening toward the round head. Keep the nail pusher stable and install it into the nail magazine hole;

[0020] 2.2.4) Run-in: Slide the slider into the rear of the nail magazine, slowly push it forward to the front of the nail magazine to run in the nail pusher, and then take out the slider; press the nail pusher until it is flush with the gecko claw, and then install the slider into the nail magazine.

[0021] Push the slider to the top of the nail magazine again and remove it, and stack the nail magazines with the reverse side facing up;

[0022] 2.2.5) Slider assembly: Install the slider to be flush with the tail of the nail magazine:

[0023] 2.2.6) Assemble the push nail cover: There is a hook at the rear of the push nail cover. Align it with the groove on the top surface of the rear end of the nail magazine, slide the nail magazine push nail cover into the nail magazine, and insert the rear clip into the groove of the nail magazine:

[0024] 2.2.7) Nail installation: Use the nail pusher tool to press the nail pusher into the bottom of the nail magazine; install the titanium nails from left to right and from top to bottom; install the nail magazine protective cover.

[0025] Preferably, the assembly of the steering positioning assembly in step 2 includes the following installation steps:

[0026] 2.3.1) Insert the rotation spring into the steering assist plate;

[0027] 2.3.2) Place the whole into the lower slot of the steering positioner and use tweezers to press the rotating spring into the lower spring slot;

[0028] 2.3.3) Insert the power assist spring into the steering cam stopper;

[0029] 2.3.4) Place the whole into the upper groove of the steering positioner and use tweezers to press the rotating spring into the upper spring groove.

[0030] Preferably, the assembly of the front head assembly in step 2 includes the following installation steps:

[0031] 2.4.1) Align the hook blade with the tail of the nail magazine seat, and then use a spot welding machine to spot weld the hook blade at the corresponding position:

[0032] 2.4.2) Align the cutting blade with the front hole of the nail magazine seat and insert it into the nail magazine seat, and pull the cutting blade backward until it can no longer move backward;

[0033] 2.4.3) Align the nail anvil with the slide groove behind the nail magazine seat and move it downward. After entering the track groove of the nail magazine seat, move it forward and align the hole on the nail anvil with the buckle above the cutting knife and press the nail anvil downward until the nail anvil and the nail magazine seat are closed;

[0034] 2.4.4) Open the nail anvil and nail magazine seat to a certain angle (the assembly angle is between 18-25°, and the optimal assembly angle is 20-23°), then insert the front closing cylinder from the back until the protrusion of the nail anvil passes through a slot on the groove of the front closing cylinder, and then press the nail anvil down to close it.

[0035] Preferably, the assembly of the steering positioning assembly and the main body in step 3 includes the following assembly steps:

[0036] 3.1.1) First, place the steering positioning assembly downward into the clamping slot of the inner tube and fix it;

[0037] 3.1.2) Place the hook on the front of the steering connecting piece into the steering cam positioning piece and place it along the groove of the inner tube;

[0038] 3.1.3) Gently pull the steering connecting piece to make the steering cam connecting piece move backward, and then install the steering cam onto the pin of the steering positioner in a pin-hole matching manner.

[0039] Preferably, the assembly of the front head assembly and parts with the main body in step 3 includes the following assembly steps:

[0040] 3.2.1) Clamp the whole part with a fixture, leaving a margin on the side close to the steering and positioning assembly, and then align the upper plane direction of the built-in push knife connecting rod with the large groove direction of the inner rod and insert it at any position;

[0041] 3.2.2) Place the blade locator into the front and rear grooves of the steering locator;

[0042] 3.2.3) Place the "T" shape behind the cutting knife on the front head assembly into the "I" shape groove of the built-in push knife connecting rod. Then move the front head assembly closer to the steering positioning assembly, and then align the two pin holes of the nail magazine seat and the steering cam;

[0043] Placing the blade locator into the front and rear grooves of the steering locator can just limit its forward and backward movement, and placing the direction transmission positioning strip into the special slot of the inner tube can prevent the cutting knife and the built-in push knife connecting rod from falling off.

[0044] 3.2.4) Place the direction transmission positioning strip in the special slot of the inner tube;

[0045] The assembly of the front head outer tube connection fixing parts in step 3 includes the following assembly steps:

[0046] 3.3.1) Insert the outer tube from behind the inner tube, and align the slot of the front closing tube with the slot of the outer tube before insertion until the two slots touch each other;

[0047] 3.3.2) Place the front outer tube connecting piece into the connection between the outer tube and the front closing tube, and place its pins into the slots of the outer tube and the front closing tube respectively. During assembly, the nail support and the nail magazine should be opened first to fix a section of the front outer tube connecting piece before it, and then push the outer tube back about 5mm, rotate the front outer tube connecting piece so that it is on the same vertical plane as the outer tube, and then move the outer tube forward until the other end is stuck;

[0048] 3.3.3) Use the gun rod assembly pressing tool to drive the hollow pin into the alignment holes of the pin holder and the steering cam to fix it.

[0049] Preferably, the assembly of the buckle outsourcing parts in step 3 includes the following assembly steps:

[0050] 3.4.1), Close the anvil seat and the cartridge seat, and insert the heat shrink tube in this direction until it reaches the outer tube clip groove;

[0051] 3.4.2), Insert the fixing clamp ring into the outer tube clip groove, use the press ring tooling to fasten the heat shrink tube, finally fit the heated shrink tube to the outer tube, and finally cut off the excess heat shrink tube part with a knife;

[0052] In the step 3, the gun rod assembly is assembled with the handle assembly, including the following assembly steps:

[0053] 3.5.1), Insert the closing spring from the back of the sleeve assembly, insert the sleeve fixing insert into the slot of the sleeve assembly, and finally insert the sleeve fixing seat in the opposite direction of the sleeve fixing insert;

[0054] 3.5.2), In the sleeve assembly group, the push rod and the rack are in a "work" shape for concave-convex fit, then adjust the height of the inner tube outlet to fit with the built-in loading bin, and then adjust the closing link to align with the hole of the tube sleeve fixing seat. Finally, use the loading bin assembly pressing tooling to press the pin into the hole.

[0055] Preferably, in the step 3, the support frame end cover is assembled, including the following assembly steps:

[0056] 3.6.1), First, turn the conversion button onto the support end cover to form a chute fit, then align the axis hole of the support frame end cover with the built-in loading bin and the handle assembly, and use the pressing tooling to press fit. First, turn the conversion button onto the support end cover to form a chute fit, then align the axis hole of the support frame end cover with the built-in loading bin and the handle assembly, and use the pressing tooling to press fit;

[0057] In the step 3, the outer shell is assembled, including the following assembly steps:

[0058] 3.7.1), First, press down the closing trigger to close the anvil seat and the cartridge seat, then insert the rotating head spring until it contacts the built-in loading bin. Then, align and connect the two steering rod fixing seats and the steering connecting piece in the sleeve assembly with pin holes. Align the two holes on each side of the left and right outer shells with the pins on the built-in loading bin, and use the upper and lower outer shell pressing tooling to press fit;

[0059] 3.7.2), Close the anvil seat and the cartridge seat again and insert the rotating head. Note that when inserting, the small hole on the rotating head aligns with the protrusion on the steering rod fixing seat to complete the fit. Then, insert the rotating head limiter into the rotating head and fit the two rotating head limiters with pin holes;

[0060] 3.7.3), Finally, cover the safety cover plate.

[0061] Preferably, the specific process of packaging the assembled electric laparoscopic linear cutting stapler in step 4 is: first inspect the assembled electric laparoscopic linear cutting stapler, and inner package it if it is qualified, then detect the initial contaminating bacteria and particles, outer package it if it is qualified, then sterilize it, and then inspect the finished product, and put it into storage if it is qualified.

[0062] Compared with the prior art, the present invention has the following advantages and effects:

[0063] 1. By inspecting the parts before assembly, it is possible to avoid using unqualified parts during assembly, thereby avoiding assembly failures caused by the use of unqualified parts, and thus improving the overall assembly efficiency. Refining the assembly of multiple parts can ensure the accuracy of workers during assembly, thereby achieving the effect of high assembly efficiency. The present invention uses a series of tooling equipment, including shell pressing tooling, trigger assembly tooling, gear pressing tooling, electromagnetic welding tooling, electromagnetic detection tooling, slider pin pressing tooling, EMC testing tooling, etc. Through the use of a series of tooling, the assembly efficiency of the assembly line is significantly accelerated, increasing it to more than 3 times. Systematized assembly processes and serialized work avoid differences caused by manual labor, avoid the risk of errors, and standardization improves the qualified rate of finished products.

[0064] 2. Through the assembly of handle components, gun barrel components, ultrasonic welding and other assemblies, the most critical is the assembly of handle components, which includes the trigger assembly, gear pin, slider pin, jaw opening pin, shell pressing, handle pressing and other steps. Among them, shell pressing is a technical difficulty. Shell pressing is equipped with a shell pressing jig. The jig solves the placement of the upper and lower shells, the direct placement relationship between the shell and other handle components, the verticality of the internal fixing pins when the upper and lower shells are pressed, and the fit of the upper and lower shell edges. The shell pressing step mainly ensures the flexibility of the shell and other handle components, so that they are not too loose or too tight, the upper and lower shell edges fit well, the edge gaps are consistent in width, and the shell will not be loose or misaligned after the drop test.

[0065] 3. Compared with manual assembly, the shell pressing jig of the present invention mainly has improved assembly stability and consistency, stable pressing force, consistent edge gaps, improved assembly efficiency and saved time cost; the main difference between the shell pressing jig and the existing manual technology is that the shell pressing jig realizes mechanized production, which greatly improves efficiency compared with manual technology. A worker can assemble 100 pieces a day by manual assembly, while a worker can assemble 300 pieces a day by using the shell pressing jig. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 The present invention is an assembly flow chart of a method for manufacturing an electric laparoscopic linear cutting stapler;

[0067] Figure 2 It is a schematic diagram of the parts of an electric laparoscopic linear cutting stapler;

[0068] Figure 3 This is a schematic diagram of the structure of a sleeve assembly of an electric laparoscopic linear cutting stapler;

[0069] Figure 4 A schematic diagram of the installation position of the support frame end cover and the conversion button of an electric laparoscopic linear cutting stapler;

[0070] Figure 5 A schematic diagram of the assembly positions of the right and left shells of an electric laparoscopic linear cutting stapler;

[0071] Figure 6 The present invention is a schematic diagram of a rotating head limiter and rotating head installation position of an electric laparoscopic linear cutting stapler.

[0072] Figure 7 This is a schematic diagram of the installation position of a safety cover of an electric laparoscopic linear cutting stapler.

[0073] Among them, 1. right outer shell; 2. left outer shell; 3. swivel head; 4. steering tie rod fixing seat; 5. magazine nail seat; 6. swivel head spring book; 7. nail support seat; 8. swivel head limiter; 9. safety cover; 10. steering connecting plate; 11. inner tube; 12. push knife rod; 13. sleeve assembly; 14. safety pin; 15. support frame end cover; 16. conversion button. DETAILED DESCRIPTION

[0074] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0075] Embodiment 1:

[0076] like Figure 1 As shown in FIG. 6 , a method for manufacturing an electric laparoscopic linear cutting stapler comprises the following manufacturing steps:

[0077] S1. Raw material preparation: first purchase the raw materials, test the incoming materials, and put them into storage after they are qualified. When making, take out the corresponding parts from the warehouse, remove the outer packaging of the parts, clean, fine wash and dry them;

[0078] S2. Assemble the handle assembly, gun barrel assembly, battery assembly, magazine nail assembly, steering positioning assembly, and front head assembly;

[0079] S3. General assembly of the electric laparoscopic linear cutting stapler: complete the assembly of the steering and positioning assembly and the main body, the assembly of the front head assembly and parts and the main body, the assembly of the front head outer tube connection and fixing parts, the assembly of the buckle outer parts, the assembly of the gun rod assembly and the handle assembly, the assembly of the support frame end cover, and the assembly of the shell in sequence;

[0080] S4. Pack the assembled electric laparoscopic linear cutting stapler.

[0081] The equipment used in the cleaning and drying processes are an ultrasonic cleaning machine and an electric blast drying oven, respectively. The parameters for fine cleaning are a frequency of 40KHz, a purified water temperature of 35°C, and a cleaning time of 30 minutes. The parameters for drying are a drying temperature of 50°C and a drying time of 90 minutes.

[0082] The specific process of packaging the assembled electric laparoscopic linear cutting stapler in step 4 is as follows: first inspect the assembled electric laparoscopic linear cutting stapler, and then package it internally if it is qualified, then test for initial contamination bacteria and particles, and then package it externally if it is qualified, and then sterilize it, and then inspect the finished product, and put it into storage if it is qualified.

[0083] The production equipment for the inner packaging process is a heat sealing machine, and the parameters of the inner packaging process are: temperature 105±3℃, mold closing pressure 0.5±0.1Mpa, and welding time 8S.

[0084] Sterilization process parameters: sterilization time 480min, sterilization temperature 40-60℃, sterilization humidity 40%-85%RH.

[0085] The step 2 of assembling the steering positioning assembly includes the following installation steps:

[0086] 2.3.1) Insert the rotation spring into the steering assist plate;

[0087] 2.3.2) Place the whole into the lower slot of the steering positioner and use tweezers to press the rotating spring into the lower spring slot;

[0088] 2.3.3) Insert the power assist spring into the steering cam stopper;

[0089] 2.3.4) Place the whole into the upper groove of the steering positioner and use tweezers to press the rotating spring into the upper spring groove.

[0090] During the assembly process, the rotating spring and the power-assisting spring should be placed in the corresponding grooves, and the springs should be horizontal laterally. After the assembly is completed, the steering assist plate and the steering cam stop plate should be able to move back and forth in the groove without obstruction.

[0091] The assembly of the front head assembly in step 2 includes the following installation steps:

[0092] 2.4.1) Align the hook blade with the tail of the nail magazine seat, and then use a spot welding machine to spot weld the hook blade at the corresponding position:

[0093] 2.4.2) Align the cutting blade with the front hole of the nail magazine seat and insert it into the nail magazine seat, and pull the cutting blade backward until it can no longer move backward;

[0094] 2.4.3) Align the nail anvil with the slide groove behind the nail magazine seat and move it downward. After entering the track groove of the nail magazine seat, move it forward and align the hole on the nail anvil with the buckle above the cutting knife and press the nail anvil downward until the nail anvil and the nail magazine seat are closed;

[0095] 2.4.4) Open the nail anvil and nail magazine seat to a certain angle (the assembly angle is between 18-25°, and the optimal assembly angle is 20-23°), then insert the front closing cylinder from the back until the protrusion of the nail anvil passes through a slot on the groove of the front closing cylinder, and then press the nail anvil down to close it.

[0096] During the assembly process, attention should be paid to pushing the card slot piece to the final position and the direction of the front closing cylinder. After the assembly is completed, the push blade cannot move forward and backward (can only move in a small range) and the nail support seat and nail magazine seat can open and close normally.

[0097] The assembly of the steering positioning assembly and the main body in step 3 includes the following assembly steps:

[0098] 3.1.1) First, place the steering positioning assembly downward into the clamping slot of the inner tube and fix it;

[0099] 3.1.2) Place the hook on the front of the steering connecting piece into the steering cam positioning piece and place it along the groove of the inner tube;

[0100] 3.1.3) Gently pull the steering connecting piece to make the steering cam connecting piece move backward, and then install the steering cam onto the pin of the steering positioner in a pin-hole matching manner.

[0101] During the assembly process, attention should be paid to the placement of the underhook of the steering connecting piece and the coordination between the steering cam and the steering positioning assembly. After the assembly is completed, the steering connecting piece drives the steering cam positioning piece to move forward and backward without obstruction.

[0102] The assembly of the front head assembly and parts with the main body in step 3 includes the following assembly steps:

[0103] 3.2.1) Clamp the whole part with a fixture, leaving a margin on the side close to the steering and positioning assembly, and then align the upper plane direction of the built-in push knife connecting rod with the large groove direction of the inner rod and insert it at any position;

[0104] 3.2.2) Place the blade locator into the front and rear grooves of the steering locator;

[0105] 3.2.3) Place the "T" shape behind the cutting knife on the front head assembly into the "I" shape groove of the built-in push knife connecting rod. Then move the front head assembly closer to the steering positioning assembly, and then align the two pin holes of the nail magazine seat and the steering cam;

[0106] 3.2.4) Place the direction transmission positioning strip in the special slot of the inner tube;

[0107] During the assembly process, attention should be paid to the separation of the components and the blade positioner from the inner tube. After the assembly is completed, ensure that the pin hole behind the steering cam is aligned with the pin hole behind the nail magazine seat.

[0108] The assembly of the front head outer tube connection fixing parts in step 3 includes the following assembly steps:

[0109] 3.3.1) Insert the outer tube from behind the inner tube, and align the slot of the front closing tube with the slot of the outer tube before insertion until the two slots touch each other;

[0110] 3.3.2) Place the front outer tube connecting piece into the connection between the outer tube and the front closing tube, and place its pins into the slots of the outer tube and the front closing tube respectively. During assembly, the nail support and the nail magazine should be opened first to fix a section of the front outer tube connecting piece before it, and then push the outer tube back about 5mm, rotate the front outer tube connecting piece so that it is on the same vertical plane as the outer tube, and then move the outer tube forward until the other end is stuck;

[0111] 3.3.3) Use the gun rod assembly pressing tool to drive the hollow pin into the alignment holes of the pin holder and the steering cam to fix it.

[0112] During the assembly process, pay attention to adjusting the distance between the outer tube and the front closing tube. After the assembly is completed, push and pull the built-in pusher rod back and forth to open and close the nail seat and the nail seat.

[0113] The buckle outsourcing parts assembly in step 3 includes the following assembly steps:

[0114] 3.4.1) Close the nail support and nail magazine seat and insert the heat shrink tube from this direction until it reaches the outer tube clamping groove;

[0115] 3.4.2) Insert the fixing clamp ring into the outer tube clamping groove, fasten the heat shrink tube with the pressing ring tool, and finally fit the heat shrink tube to the outer tube, and finally cut the excess heat shrink tube with a knife;

[0116] During the assembly process, care should be taken to leave a margin for the heat shrink tube. After assembly, the heat shrink tube should be close to the surface of the workpiece without sliding back and forth.

[0117] In step 3, the gun barrel assembly and the handle assembly are assembled, including the following assembly steps:

[0118] 3.5.1), Insert the closing spring from the back of the sleeve assembly, insert the sleeve fixing insert into the slot of the sleeve assembly, and finally insert the sleeve fixing seat in the opposite direction to the sleeve fixing insert;

[0119] 3.5.2), Make the push rod in the sleeve assembly group and the "I" shape in the rack fit with each other in a concave-convex manner, then adjust the height of the inner tube outlet to make it fit with the built-in loading bin, then adjust the closing link to align it with the hole of the tube sleeve fixing seat, and finally press the pin into the hole with the pressing tool of the loading bin assembly.

[0120] During the assembly process, it should be ensured that the gun barrel assembly fits closely to the main body support frame.

[0121] In step 3, the assembly of the support frame end cover includes the following assembly steps:

[0122] 3.6.1), First, turn the conversion button onto the support part end cover to form a sliding groove fit, then align the axis and hole of the support frame end cover with the built-in loading bin and the handle assembly, and press it with the pressing tool. First, turn the conversion button onto the support part end cover to form a sliding groove fit, then align the axis and hole of the support frame end cover with the built-in loading bin and the handle assembly, and press it with the pressing tool;

[0123] During the assembly process, it should be ensured that the head of the screw fits completely with the main body support frame end cover. When installing the main body support frame end cover, align the conversion button to the right for installation. After installation, the conversion button cannot be pulled out.

[0124] In step 3, the assembly of the outer shell includes the following assembly steps:

[0125] 3.7.1), First, press the closing trigger down to close the anvil seat and the nail magazine seat, then insert the rotating head spring until it contacts the built-in loading bin, then align and connect the two steering pull rod fixing seats and the steering connecting piece in the sleeve assembly with pin holes, and then align the two holes on each side of the left outer shell and the right outer shell with the pins on the built-in loading bin and press them with the upper and lower outer shell pressing tool;

[0126] 3.7.2), Close the anvil seat and the nail magazine seat again and then insert the rotating head. Note that when inserting, the small hole on the rotating head aligns with the protrusion on the steering pull rod fixing seat to complete the fit, and then insert the rotating head limiter into the rotating head and make the two rotating head limiters fit with pin holes;

[0127] 3.7.3), Finally, cover the safety cover plate.

[0128] During the assembly process, cotton gloves should be worn to assemble the shell. The red and black lines of the main circuit board should not be tied into a knot. The red and black lines should not be on the pressing surface of the cylinder. The steering rod fixing seat and the steering rod hole should be pressed tightly.

[0129] The battery assembly in step 2 includes the following installation steps:

[0130] 2.1.1) Assemble the battery grid, CR123A Panasonic battery, battery shell, and battery connection long piece in sequence, and spot weld each long piece evenly;

[0131] 2.1.2) Place the battery connection short piece and spot weld both ends of the short piece evenly;

[0132] 2.1.3) Place the overcurrent protection sheet, spot weld both ends of the overcurrent protection sheet evenly, check that there is no over-welding or cold welding at the welding points, and that the welding points are full and even;

[0133] 2.1.4) After setting the equipment parameters, place the battery pack to be welded into the mold and fix it. Press the green start buttons on both sides at the same time to start welding and press it with an ultrasonic plastic welder. After welding is completed, check the welding effect of the battery pack to ensure that the welding seam is uniform, without over-welding, overflowing glue, or false welding warping.

[0134] The parameters of the ultrasonic plastic welding machine are: air pressure 0.35±0.05MPa, delay time 0.5s, welding time 0.25s, cooling time 0.5s. The operator of the battery welding machine must wear a special welding mask and anti-static gloves when assembling the battery pack.

[0135] The assembly of the cartridge nail assembly in step 2 includes the following installation steps:

[0136] 2.2.1) Assemble the left nail pusher: prepare the materials to be assembled, and place them neatly with the reverse side of the nail magazine facing upwards; take the nail magazines in order, clamp the front end of the left nail pusher with bent tweezers, and install them one by one from the fork opening to the round head in the corresponding position of the nail magazine, and keep the nail pusher stable and install it into the nail magazine hole;

[0137] 2.2.2) Assembly of the right nail pusher: Take the nail magazines in order, clamp the front end of the right nail pusher with bent tweezers, and install them one by one into the corresponding positions of the nail magazine from the fork opening toward the round head. Keep the nail pusher stable and install it into the nail magazine hole;

[0138] 2.2.3) Assembly of the external nail pusher: Take the nail magazines in order, clamp the front end of the external nail pusher with curved tweezers, and install them one by one into the corresponding positions of the nail magazine from the fork opening toward the round head. Keep the nail pusher stable and install it into the nail magazine hole;

[0139] 2.2.4) Run-in: Slide the slider into the rear of the nail magazine, slowly push it forward to the front of the nail magazine to run in the nail pusher, and then take out the slider; press the nail pusher until it is flush with the gecko claw, and then install the slider into the nail magazine.

[0140] Push the slider to the top of the nail magazine again and remove it, and stack the nail magazines with the reverse side facing up;

[0141] 2.2.5) Slider assembly: Install the slider to be flush with the tail of the nail magazine:

[0142] 2.2.6) Assemble the push nail cover: There is a hook at the rear of the push nail cover. Align it with the groove on the top surface of the rear end of the nail magazine, slide the nail magazine push nail cover into the nail magazine, and insert the rear clip into the groove of the nail magazine:

[0143] 2.2.7) Nail installation: Use the nail pusher tool to press the nail pusher into the bottom of the nail magazine; install the titanium nails from left to right and from top to bottom; install the nail magazine protective cover.

[0144] During the assembly of the left nail pusher, the right nail pusher, and the outer nail pusher, it is necessary to ensure that the nail magazine model corresponds correctly to the nail pusher model and the nail pusher is installed in the correct direction to ensure that there is no missing, falling, deformation, or wrong installation.

[0145] During the running-in process, make sure the pusher slider is of the correct model, push slowly, and do not use too much force. If there is any defect, remove and replace the pusher and check again.

[0146] During the assembly of the slider, please note that the slider must be flush with the bottom of the nail magazine;

[0147] During the assembly of the push pin cover, it should be noted that the push pin cover buckle cannot be distorted;

[0148] During the nailing process, it is important to ensure that all titanium nails are complete, without any missing or deformation.

[0149] All unqualified products or parts in the inspection process will enter the unqualified product control procedure.

[0150] Working principle: By refining the assembly process of many parts and providing specific operation procedures, the probability of errors during assembly can be reduced, and it is also conducive to the training of new employees, thereby improving assembly efficiency. At the same time, testing of raw materials, products after general assembly, products after inner packaging, and finished products after sterilization can avoid the use of damaged parts during assembly, resulting in a waste of time, while ensuring the quality of assembled products.

[0151] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for manufacturing an electric laparoscopic linear cutting stapler, characterized in that: The manufacturing steps include: S1. Raw material preparation: first purchase the raw materials, test the incoming materials, and put them into storage after they are qualified. When making, take out the corresponding parts from the warehouse, remove the outer packaging of the parts, clean, fine wash and dry them; S2. Assemble the handle assembly, gun barrel assembly, battery assembly, magazine nail assembly, steering positioning assembly, and front head assembly; S3. General assembly of the electric laparoscopic linear cutting stapler: complete the assembly of the steering and positioning assembly and the main body, the assembly of the front head assembly and parts and the main body, the assembly of the front head outer tube connection and fixing parts, the assembly of the buckle outer parts, the assembly of the gun rod assembly and the handle assembly, the assembly of the support frame end cover, and the assembly of the shell in sequence; S4. Pack the assembled electric laparoscopic linear cutting stapler.

2. The method for manufacturing an electric laparoscopic linear cutting stapler according to claim 1, characterized in that: in step S2, the battery assembly is assembled, The following steps are involved: 2.1.1) Assemble the battery grid, CR123A Panasonic battery, battery shell, and battery connection long piece in sequence, and spot weld each long piece evenly; 2.1.2) Place the battery connecting short piece and spot weld both ends of the short piece evenly; 2.1.3) Place the overcurrent protection sheet, spot weld both ends of the overcurrent protection sheet evenly, check that there is no over-welding or cold welding at the welding points, and that the welding points are full and even; 2.1.4) After setting the equipment parameters, place the welded battery pack into the mold and fix it. Press the green start buttons on both sides at the same time to start welding. Press the battery pack with an ultrasonic plastic welder. After welding is completed, check the welded battery pack to ensure that the weld is uniform, without over-welding or glue overflow, or without cold welding or warping.

3. The method for manufacturing an electric laparoscopic linear cutting stapler according to claim 1, characterized in that: The assembly of the cartridge nail assembly in step S2 includes the following steps: 2.2.1) Assemble the left nail pusher: lay the materials to be assembled neatly with the reverse side of the nail magazine facing upwards; take the nail magazines in order, clamp the front end of the left nail pusher with bent tweezers, and install them one by one from the fork opening to the round head into the corresponding position of the nail magazine, keeping the nail pusher stably installed in the nail magazine hole; 2.2.2) Assembly of the right nail pusher: Take the nail magazines in order, clamp the front end of the right nail pusher with bent tweezers, and install them one by one into the corresponding positions of the nail magazine from the fork opening toward the round head. Keep the nail pusher stable and install it into the nail magazine hole; 2.2.3) Assembly of the external nail pusher: Take the nail magazines in order, clamp the front end of the external nail pusher with curved tweezers, and install them one by one into the corresponding positions of the nail magazine from the fork opening toward the round head. Keep the nail pusher stable and install it into the nail magazine hole; 2.2.4) Run-in: Slide the slider into the tail of the nail magazine, slowly push it forward to the front of the nail magazine to run-in the nail pusher, and then take out the slider; press the nail pusher until it is flush with the gecko claw, then install the slider into the nail magazine, push the slider to the top of the nail magazine again and then remove it, and stack the nail magazines with the reverse side facing up; 2.2.5) Slider assembly: Install the slider to be flush with the tail of the nail magazine: 2.2.6) Assemble the push nail cover: There is a hook at the rear of the push nail cover. Align it with the groove on the top surface of the rear end of the nail magazine, slide the nail magazine push nail cover into the nail magazine, and insert the rear clip into the groove of the nail magazine: 2.2.7) Nail installation: Use the nail pusher tool to press the nail pusher into the bottom of the nail magazine; install the titanium nails from left to right and from top to bottom; install the nail magazine protective cover.

4. The method for manufacturing an electric laparoscopic linear cutting stapler according to claim 1, characterized in that: The step S2 of assembling the steering positioning assembly includes the following steps: 2.3.1) Insert the rotation spring into the steering assist plate; 2.3.2) Place the whole into the lower slot of the steering positioner and use tweezers to press the rotating spring into the lower spring slot; 2.3.3) Insert the power assist spring into the steering cam stopper; 2.3.4) Place the whole into the upper groove of the steering positioner and use tweezers to press the rotating spring into the upper spring groove.

5. The method for manufacturing an electric laparoscopic linear cutting stapler according to claim 1, characterized in that: The step S2 of assembling the front head assembly includes the following steps: 2.4.1) Align the hook blade with the tail of the nail magazine seat, and then use a spot welding machine to spot weld the hook blade at the corresponding position: 2.4.2) Align the cutting blade with the front hole of the nail magazine seat and insert it into the nail magazine seat, and pull the cutting blade backward until it can no longer move backward; 2.4.3) Align the nail anvil with the slide groove behind the nail magazine seat and move it downward. After entering the track groove of the nail magazine seat, move it forward and align the hole on the nail anvil with the buckle above the cutting knife and press the nail anvil downward until the nail anvil and the nail magazine seat are closed; 2.4.4) Open the nail anvil and the nail magazine seat to a certain angle between 18-25 degrees, then insert the front closing cylinder from the back until the protrusion of the nail anvil passes through a slot on the groove of the front closing cylinder, and then press the nail anvil down to close it.

6. The method for manufacturing an electric laparoscopic linear cutting stapler according to claim 1, characterized in that: In step S3, the steering positioning component and the main body are assembled. The following steps are involved: 3.1.1) First, place the steering positioning assembly downward into the clamping slot of the inner tube and fix it; 3.1.2) Place the hook on the front of the steering connecting piece into the steering cam positioning piece and place it along the groove of the inner tube; 3.1.3) Gently pull the steering connecting piece to make the steering cam connecting piece move backward, and then install the steering cam onto the pin of the steering positioner in a pin-hole matching manner.

7. The method for manufacturing an electric laparoscopic linear cutting stapler according to claim 1, characterized in that: The assembly of the front head assembly and parts with the main body in step S3 includes the following steps: 3.2.1) Clamp the whole part with a fixture, leaving a margin on the side close to the steering and positioning assembly, and then align the upper plane direction of the built-in push knife connecting rod with the large groove direction of the inner rod and insert it into any position; 3.2.2) Place the blade locator into the front and rear grooves of the steering locator; 3.2.3) Place the T-shaped part behind the cutting knife on the front assembly into the I-shaped groove of the built-in push knife connecting rod. Then move the front assembly closer to the steering positioning assembly, and align the two pin holes of the nail magazine seat and the steering cam. 3.2.4) Place the direction transmission positioning strip in the slot of the inner tube; The assembly of the front head outer tube connection fixing parts in step S3 includes the following steps: 3.3.1) Insert the outer tube from behind the inner tube. Before insertion, align the slot of the front closing tube with the slot of the outer tube until the two slots touch each other; 3.3.2) Place the front outer tube connecting piece into the connection between the outer tube and the front closing tube, and place its pins into the slots of the outer tube and the front closing tube respectively. During assembly, the nail support and the nail magazine should be opened first to fix a section of the front outer tube connecting piece in front of it, and then push the outer tube back 5mm, rotate the front outer tube connecting piece so that it is on the same vertical plane as the outer tube, and then move the outer tube forward until the other end is stuck; 3.3.3) Use the gun rod assembly pressing tool to drive the hollow pin into the alignment holes of the pin holder and the steering cam to fix it.

8. The method for manufacturing an electric laparoscopic linear cutting stapler according to claim 1, characterized in that: The buckle outsourcing parts assembly in step S3 includes the following steps: 3.4.1) Close the nail support and nail magazine seat and insert the heat shrink tube from this direction until it reaches the outer tube clamping groove; 3.4.2) Insert the fixing clamp ring into the outer tube clamping groove, fasten the heat shrink tube with the pressing ring tool, and finally fit the heat shrink tube to the outer tube, and finally cut the excess heat shrink tube with a knife; The assembly of the gun rod assembly and the handle assembly in step S3 includes the following assembly steps: 3.5.1) Insert the closing spring from the back of the sleeve assembly, insert the sleeve fixing insert into the groove of the sleeve assembly, and finally insert the sleeve fixing seat and the sleeve fixing insert in opposite directions; 3.5.2) Fit the push rod in the sleeve assembly with the tooling in the rack, and then adjust the inner tube outlet height to make it match with the built-in loading bin, and then adjust the closing connecting rod period to align with the pipe sleeve fixing seat hole, and finally use the loading bin assembly pressing tool to press the pin into the hole.

9. The method for manufacturing an electric laparoscopic linear cutting stapler according to claim 1, characterized in that: The support frame end cover assembly in step S3 includes the following steps: 3.6.1) First turn the conversion button to the support end cover to form a slide groove, then align the axis holes of the support frame end cover with the built-in loading bin, and press the handle assembly with a pressing tool. First turn the conversion button to the support end cover to form a slide groove, then align the axis holes of the support frame end cover with the built-in loading bin, and press the handle assembly with a pressing tool; The housing assembly in step S3 includes the following steps: 3.7.1) First, press the closing trigger downward to close the nail support and the nail magazine seat, then insert the rotating head spring until it contacts the built-in loading chamber, then align the two steering tie rod fixing seats and the steering connecting piece in the sleeve assembly with the pin holes, and then align the two holes on both sides of the left and right shells with the pins on the built-in loading chamber and press them together using the upper and lower shell pressing tooling; 3.7.2) Close the nail support and nail magazine seat again and insert the swivel head. When inserting it again, align the small hole on the swivel head with the protrusion on the steering tie rod fixing seat to complete the fit. Insert the swivel head limiter into the swivel head. The two swivel head limiters are matched with the pin holes; 3.7.3) Finally, put on the safety cover.

10. The method for manufacturing an electric laparoscopic linear cutting stapler according to claim 1, characterized in that: The specific process of packaging the assembled electric laparoscopic linear cutting stapler in step S4 is: first inspect the assembled electric laparoscopic linear cutting stapler, and then package it internally if it is qualified, then detect the initial contaminating bacteria and particles, and then package it externally if it is qualified, and then sterilize it, and then inspect the finished product, and put it into storage if it is qualified.

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