Splicing die for anastomat

Abstract

The utility model discloses a splicing die for an anastomat. The splicing die comprises a die holder and a die core arranged in the die holder, the mold core is formed by mutually clamping a group of splicing unit I, splicing unit II and splicing unit III and splicing heads positioned at the far ends of the splicing unit I, the splicing unit II and the splicing unit III; the two ends of the first splicing unit, the two ends of the second splicing unit and the two ends of the third splicing unit are limited by the inner end of the die holder and the splicing heads. The first splicing unit and the second splicing unit are symmetrically arranged on the two sides of the third splicing unit, and at least two rows of second splicing units are arranged on the single side of the third splicing unit. Splicing units I are clamped and arranged between the splicing units III and the splicing units II as well as between two adjacent rows of splicing units II at intervals; and a splicing seam between two adjacent splicing units II is overlapped with the axis position of the single splicing unit I. The first splicing unit, the second splicing unit and the third splicing unit are clamped and matched with one another, so that the flatness of the assembled and formed nail bin is guaranteed, the nail pieces can stably run in the nail bin, and the motion fluency is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of medical device processing technology, and in particular relates to a splicing mold for an anastomosis device. Background Technology

[0002] Medical stapler molds are an important branch of the medical device manufacturing field, involving the injection molding technology of staplers. A stapler is a device used in surgical procedures for cutting and anastomosing tissues, widely used in cardiothoracic surgery, gastrointestinal surgery, and other surgical fields; and has had a profound impact on medical surgery.

[0003] The staple cartridge structure is the core component of the stapler, carrying the staple pusher. During operation, it pushes the staple pusher through the cartridge holes, pushing the titanium staples against the staple seats to complete the suturing action. The staple cartridge assembly of the stapler has high requirements. In the prior art, the staple cartridge structure of the stapler is usually processed by injection molding, such as patent CN214188175U, "An Injection Mold for a Staple Cartridge of a Cutting Stapler". After processing the staple cartridge using the above-mentioned patent and other existing technologies, due to the long length, small diameter and complex structure of the staple cartridge, it is easy to have problems such as shrinkage cavities, wrinkles, bubbles and cracks during injection molding, resulting in poor precision and low pass rate of finished products. Moreover, because the staple cartridge is long, local deformation may occur during assembly and use, making the flatness of the staple cartridge insufficient. This can cause the staple pusher to get stuck during use, preventing the needle from being discharged and leading to medical accidents.

[0004] To address the aforementioned issues, designing a splicing mold for anastomosis devices manufactured using a precision medical robot secondary overmolding process is a crucial technical problem that those skilled in the art need to solve. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned problems in the prior art and to provide a splicing mold for an anastomosis device.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A stitching die for a stapler includes a die base and a die core disposed within the die base. The die core is formed by interlocking a set of stitching units 1, 2, and 3, and a joint at the distal ends of the three units. The two ends of stitching units 1, 2, and 3 are defined by the inner end of the die base and the joint. Stitching units 1 and 2 are symmetrically arranged on both sides of stitching unit 3, and at least two rows of stitching units 2 are arranged on one side of stitching unit 3. The splicing unit 1 is interlocked with the splicing unit 2 and the splicing unit 2 in adjacent rows, and is spaced apart from each other; the splicing unit 3 or splicing unit 2 in the same row are spliced ​​together, the splicing unit 1 in the same row is spaced apart, and the outer surface of the splicing unit 1 in the outermost row is in contact with the inner surface of the mold base; the seam between two adjacent splicing units 2 coincides with the axis of a single splicing unit 1, or is centered between two adjacent splicing units 1.

[0008] Preferably, the splicing unit one includes a set of splicing blocks one located between the splicing unit two and the mold base; the inner surface of the splicing block one is a plane that abuts against the outer surface of the splicing unit two, and the top of the outer surface of the splicing block one has a stepped surface, and the bottom has a snap-fit ​​structure that protrudes from its main body surface and snaps into the mold base.

[0009] Preferably, the splicing unit one further includes a set of splicing blocks two located between splicing unit three and splicing unit two, and between two adjacent rows of splicing units two; the side of splicing block two away from splicing block one is flat, and the top of the side close to splicing block one has a stepped surface, and the bottom has a snap-fit ​​block that protrudes from its main body surface and snaps into the bottom of splicing unit two.

[0010] Preferably, the second splicing unit includes a set of splicing groups 1 whose outer walls are fitted to the mold base and the first splicing block, and are arranged in the same row. The first splicing group 1 consists of an integrally formed abutment plate and a splicing strip protruding from the outer surface of the abutment plate. The top of the outer surface of the splicing strip has a stepped surface, and the stepped surface is at the same height as the stepped surface formed at the top of the first splicing block. The bottom end of the second splicing unit has a plug extending downward, and the plug matches the snap-fit ​​block. The two sides of the splicing strip have first slots, and the first slots are spliced ​​with the first protrusions on both sides of the first splicing block to form a mortise and tenon structure.

[0011] Preferably, the splicing unit two further includes a set of splicing groups two whose outer surfaces are in contact with the splicing group one and the splicing block two, and are arranged in the same row. The splicing group two is integrally formed by the abutment plate and the splicing strip protruding from the outer surface of the abutment plate, and the bottom ends of both have plugs that match the snap-fit ​​block; the two sides of the splicing strip on the splicing group two have second slots, and the second slots are spliced ​​with the second protrusions on both sides of the splicing block two to form a tenon and mortise structure; the splicing strip located at the farthest end has the second slot only on its inner side.

[0012] Preferably, a retaining seat is provided between the splicing unit three and the splicing unit two. A retaining strip protruding from the outer surface of the retaining seat is formed on the retaining seat. The retaining strip is located near the side wall of the retaining seat, and the bottom end of the retaining strip forms a support portion that engages with the bottom end of the main body of the splicing unit two. Third slots are formed on both sides of the retaining strip. The third slots are spliced ​​with the second protrusions on both sides of the splicing unit two to form a tenon and mortise structure. One splicing unit two can be accommodated between two adjacent third slots.

[0013] Preferably, the splicing unit three is composed of splicing plate one and splicing plate two; the distal ends of splicing plate one and splicing plate two are both formed with connecting blocks, wherein the proximal ends of splicing plate one are both formed with notches, the connecting blocks on splicing plate one are inserted into the splicing joint, and the proximal end of splicing plate two is a plane and abuts against the proximal end of the mold base.

[0014] Preferably, the splicing joint is formed by splicing a straight plate part and a guide part. The straight plate part includes a set of straight plates that abut against the end faces of the first splicing group and the second splicing group, and the outer surface of the straight plate abuts against the inner wall of the mold base. The splicing plate has a straight transition with the top surface of the first splicing unit, the second splicing unit and the third splicing unit. The two sides of the splicing plate in the middle are formed with slots that cooperate with the second splicing group at the far end.

[0015] Preferably, the bottom surface of the mold base is provided with a beryllium copper pad, and the mold core is located on the beryllium copper pad.

[0016] The advantages of this utility model's technical solution are mainly reflected in:

[0017] The flatness of the assembled nail magazine is ensured by the interlocking and cooperation of splicing unit one, splicing unit two, and splicing unit three, so that the nail pieces can run smoothly in the nail magazine and ensure smooth operation. At the same time, the splicing joint limits the position of splicing unit one, splicing unit two, and splicing unit three in the X-axis direction, and the overall structure is compact, ensuring the length of the injection molded product and avoiding shrinkage after injection molding.

[0018] By using splicing unit one, two rows of splicing units two and splicing units two and three are set at intervals, and by using surface-to-surface contact, the consistency of the gaps in the staple cartridge and the overall flatness of the staple cartridge are ensured; then, in conjunction with the inner wall of the mold, the positions of adjacent rows of splicing units two and splicing units two and three are defined in the Y-axis direction.

[0019] The bottom of splicing unit 1, splicing unit 2 and splicing unit 3 are provided with mutually cooperating protruding structures, so that adjacent two parts can be interlocked with each other, and the height of the three is limited in the Z-axis direction to ensure the yield of injection molded products. Attached Figure Description

[0020] Figure 1 : A perspective view of a preferred embodiment of the present invention;

[0021] Figure 2 Cross-sectional view of a preferred embodiment of this utility model;

[0022] Figure 3 : A partial hidden perspective view of a preferred embodiment of this utility model;

[0023] Figure 4 A partial hidden top view of a preferred embodiment of this utility model;

[0024] Figure 5 : A structural diagram of the splicing unit one of the preferred embodiments of this utility model;

[0025] Figure 6 : Structural diagram of splicing unit two in a preferred embodiment of this utility model;

[0026] Figure 7 : A structural diagram of the card holder according to a preferred embodiment of this utility model;

[0027] Figure 8 : Structural diagram of splicing unit three in a preferred embodiment of this utility model. Detailed Implementation

[0028] The purpose, advantages, and features of this utility model will be illustrated and explained through the following non-limiting description of preferred embodiments. These embodiments are merely typical examples of applying the technical solutions of this utility model, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this utility model.

[0029] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Also, in the description of the solution, with the operator as a reference, the direction closer to the operator is the proximal end, and the direction farther from the operator is the distal end.

[0030] like Figure 1 As shown, this utility model discloses a splicing mold for a stapler, including a mold base 1 and a mold core 2 disposed within the mold base 1. A beryllium copper pad 11 is disposed on the inner bottom surface of the mold base 1, and the mold core 2 is located on the beryllium copper pad 11. During injection molding, after the molten material is injected into the mold, the mold also receives heat due to the heating of the plastic, causing the mold temperature to rise. If the mold is not cooled, it will overheat, leading to deformation, aging, and cracking, thus affecting the quality of the injection molded product. Because this utility model has a compact structure, the beryllium copper pad disposed within the mold base 1 indirectly carries away the heat from the mold core, achieving a cooling effect and shortening the cooling time.

[0031] like Figure 2 As shown, the mold core 2 is formed by a set of splicing units 1 (21), 2 (22), and 3 (23), and a splicing joint 24 located at the far ends of the three units, which are interlocked together. The interlocking and cooperation of splicing units 1, 2, and 3 ensures the flatness of the assembled staple cartridge, allowing the staples to move smoothly within the cartridge and ensuring smooth operation. The splicing joint 24 is formed by... Figure 1 or Figure 3 The straight plate portion 241 and guide portion 242 shown are spliced ​​together. The straight plate portion 241 includes a set of straight plates that abut against the end faces of the first splicing unit 221 and the second splicing unit 222, and the outer surface of the straight plate abuts against the inner wall of the mold base 1. The splicing plate 24 transitions linearly with the top surfaces of the first splicing unit 21, the second splicing unit 22, and the third splicing unit 23. The two ends of the first splicing unit 21, the second splicing unit 22, and the third splicing unit 23 are defined by the inner end of the mold base 1 and the splicing joint 24. The splicing joint 24 defines the position of the first splicing unit 21, the second splicing unit 22, and the third splicing unit 23 in the X-axis direction of the mold core 2, that is, the length direction of the mold core, thereby limiting the length of the injection-molded product to avoid shrinkage after injection molding.

[0032] Furthermore, such as Figures 3 to 4 As shown, splicing unit 1 21 and splicing unit 22 are symmetrically arranged on both sides of splicing unit 3 23, and at least two rows of splicing unit 22 are arranged on one side of splicing unit 3 23. Splicing unit 1 21 is interlocked and spaced between splicing unit 3 23 and splicing unit 22, and between adjacent rows of splicing unit 22. Splicing unit 3 23 or splicing unit 22 in the same row are spliced ​​together, and splicing unit 1 21 in the same row are spaced apart. The outer surface of splicing unit 1 21 in the outermost row is in contact with the inner surface of the mold base 1. The seam between two adjacent splicing unit 22 coincides with the axis of a single splicing unit 1 21, or is centrally located between two adjacent splicing unit 1 21.

[0033] like Figures 3 to 4 As shown, the splicing unit 21 includes a set of splicing blocks 211 located between the splicing unit 22 and the mold base 1. Figure 4 As shown, the inner surface of the splicing block 211 is a plane that abuts against the outer surface of the splicing unit 22. The top of the outer surface of the splicing block 211 has a stepped surface, and the bottom has a snap-fit ​​structure 2111 that protrudes from its main body surface and snaps into the mold base 1.

[0034] like Figure 5 As shown, the splicing unit 1 21 further includes a set of splicing blocks 212 located between splicing unit 3 23 and splicing unit 22, and between two adjacent rows of splicing units 22. The side of splicing block 212 away from splicing block 1 211 is flat, and the top of the side close to splicing block 1 211 has a stepped surface, and the bottom has a locking block 2121 that protrudes from its main surface and engages with the bottom of splicing unit 22.

[0035] like Figures 2 to 4 As shown, the splicing unit 22 includes a set of splicing groups 221 whose outer walls are fitted to the mold base 1 and the splicing block 211, and which are arranged in the same row. Figure 6As shown, the splicing unit 221 consists of an integrally formed abutment 2211 and a splicing strip 2212 protruding from the outer surface of the abutment 2211. The top of the outer surface of the splicing strip 2212 has a stepped surface, and this stepped surface is at the same height as the stepped surface formed at the top of the splicing block 211. The two rows of splicing units 2 and splicing units 2 and 3 are spaced apart by splicing unit 1, and the surface-to-surface contact ensures the consistency of the gap of the staple cartridge and the overall flatness of the staple cartridge; in conjunction with the inner wall of the mold, the positions of the two adjacent rows of splicing units 2 and splicing units 2 and 3 are defined in the Y-axis direction, that is, the width direction of the mold core 2. The bottom end of the second splicing unit 22 extends downward with a plug 2213, which matches the snap-fit ​​block 2121. First slots 2201 are formed on both sides of the splicing strip 2212, and these slots 2201 are joined with the first protrusions 2101 on both sides of the first splicing block 211 to form a mortise and tenon structure. This mortise and tenon structure ensures the flatness of the first splicing unit 21 and the second splicing unit 22 located in the same row, thereby ensuring the flatness of the injection-molded stapler cartridge structure, allowing the staples to move smoothly within the cartridge.

[0036] like Figure 6 As shown, the second splicing unit 22 further includes a set of splicing groups 222 whose outer surfaces are in contact with the first splicing group 221 and the second splicing block 212, and are arranged in the same row. The second splicing group 22 is integrally formed by the abutment plate 2211 and the splicing strip 2212 protruding from the outer surface of the abutment plate 2211. The bottom ends of both have plugs 2213 that match the snap-fit ​​block 2121. By snapping the plug 2213 with the mold 1 or the first splicing unit 21, the height consistency of the three is limited in the Z-axis direction, ensuring the yield rate of injection molded products.

[0037] The splicing strip 2212 on the second splicing assembly 222 has second slots 2202 formed on both sides. The second slots 2202 are spliced ​​with the second protrusions 2102 on both sides of the second splicing block 212 to form a tenon and mortise structure. The splicing strip 2212 at the farthest end has the second slot 2202 formed only on its inner side. The splicing plate 24 in the middle has slots on both sides that mate with the splicing assembly 222 at the farthest end.

[0038] like Figure 7As shown, a retaining seat 25 is also provided between the splicing unit 3 23 and the splicing unit 22. A retaining strip 251 protruding from the outer surface of the retaining seat 25 is formed on the retaining seat 25. The retaining strip 251 is located close to the side wall of the retaining seat 25, and the bottom end of the retaining strip 251 forms a support part 252 that engages with the bottom end of the main body of the splicing unit 222. Third retaining grooves 2203 are formed on both sides of the retaining strip 251. The third retaining grooves 2203 are spliced ​​with the second protrusions 2102 on both sides of the splicing block 212 to form a tenon and mortise structure. One splicing unit 222 can be accommodated between two adjacent third retaining grooves 2203.

[0039] Combination Figure 3 , Figure 4 and Figure 8 As shown, the splicing unit 3 23 is composed of splicing plate 1 231 and splicing plate 232. Specifically, as follows... Figure 8 As shown, both the distal ends of the first splicing plate 231 and the second splicing plate 232 have connecting blocks 2311, and the proximal ends of the first splicing plate 231 have notches 230. The connecting blocks 2311 on the first splicing plate 231 are inserted into the splicing joint 24. The proximal end of the second splicing plate 232 is flat and abuts against the proximal end of the mold base 1.

[0040] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A stitching mold for a stapler, comprising a mold base (1) and a mold core (2) disposed within the mold base (1); characterized in that: The mold core (2) is formed by a set of splicing unit one (21), splicing unit two (22) and splicing unit three (23), and splicing joint (24) located at the far ends of the three, which are interlocked with each other; the two ends of splicing unit one (21), splicing unit two (22) and splicing unit three (23) are defined by the inner end of the mold base (1) and the splicing joint (24); splicing unit one (21) and splicing unit two (22) are symmetrically arranged on both sides of splicing unit three (23), and at least two rows of splicing unit two (22) are arranged on one side of splicing unit three (23); splicing unit three (23) and The splicing units 2 (22) are interlocked and spaced apart from each other and between adjacent rows of splicing units 2 (22); splicing units 3 (23) or splicing units 2 (22) in the same row are spliced ​​together, and splicing units 1 (21) in the same row are spaced apart, and the outer surface of splicing unit 1 (21) in the outermost row is in contact with the inner surface of the mold base (1); the seam between two adjacent splicing units 2 (22) coincides with the axis of a single splicing unit 1 (21), or is centrally located between two adjacent splicing units 1 (21).

2. The splicing mold for the anastomosis device according to claim 1, characterized in that: The splicing unit one (21) includes a set of splicing blocks one (211) located between the splicing unit two (22) and the mold base (1); the inner surface of the splicing block one (211) is a plane that abuts against the outer surface of the splicing unit two (22), and the top of the outer surface of the splicing block one (211) has a stepped surface, and the bottom has a snap-fit ​​structure (2111) that protrudes from its main body surface and snaps into the mold base (1).

3. The splicing mold for the anastomosis device according to claim 2, characterized in that: The splicing unit one (21) also includes a set of splicing blocks two (212) located between the splicing unit three (23) and the splicing unit two (22), and between two adjacent rows of splicing units two (22); the side of the splicing block two (212) away from the splicing block one (211) is a plane, and the top of the side close to the splicing block one (211) has a stepped surface, and the bottom has a snap-fit ​​block (2121) that protrudes from its main surface and snaps into the bottom of the splicing unit two (22).

4. The splicing mold for a stapler according to claim 3, characterized in that: The second splicing unit (22) includes a set of splicing groups (221) whose outer walls are attached to the mold base (1) and the first splicing block (211) and are arranged in the same row. The first splicing group (221) consists of an integrally formed abutment (2211) and a splicing strip (2212) protruding from the outer surface of the abutment (2211). The top of the outer surface of the splicing strip (2212) has a stepped surface, and the stepped surface is at the same height as the stepped surface formed at the top of the first splicing block (211). The bottom end of the second splicing unit (22) has a plug (2213) extending downward, and the plug (2213) matches the snap-fit ​​block (2121). The two sides of the splicing strip (2212) have first slots (2201), and the first slots (2201) are spliced ​​with the first protrusions (2101) on both sides of the first splicing block (211) to form a mortise and tenon structure.

5. The splicing mold for a stapler according to claim 4, characterized in that: The second splicing unit (22) further includes a set of splicing groups (222) whose outer surfaces are in contact with the first splicing group (221) and the second splicing block (212) and are arranged in the same row. The second splicing group (222) is integrally formed by the abutment (2211) and the splicing strip (2212) protruding from the outer surface of the abutment (2211). The bottom ends of both have plugs (2213) that match the snap-fit ​​block (2121). The splicing strip (2212) on the second splicing group (222) has second slots (2202) formed on both sides. The second slots (2202) are spliced ​​with the second protrusions (2102) on both sides of the second splicing block (212) to form a tenon and mortise structure. The splicing strip (2212) located at the farthest end has the second slot (2202) formed only on its inner side.

6. The splicing mold for a stapler according to claim 5, characterized in that: A card holder (25) is also provided between the splicing unit three (23) and the splicing unit two (22). A card strip (251) protruding from its outer surface is formed on the card holder (25). The card strip (251) is set close to the side wall of the card holder (25), and a support part (252) is formed at the bottom end of the card strip (251) to engage with the bottom end of the main body of the splicing group two (222). A third card groove (2203) is formed on both sides of the card strip (251). The third card groove (2203) is spliced ​​with the second protrusion (2102) on both sides of the splicing block two (212) to form a mortise and tenon structure. One splicing group two (222) can be accommodated between two adjacent third card grooves (2203).

7. The splicing mold for a stapler according to claim 6, characterized in that: The splicing unit three (23) is composed of splicing plate one (231) and splicing plate two (232); the far ends of splicing plate one (231) and splicing plate two (232) are both formed with connecting blocks (2311), wherein the near end of splicing plate one (231) is formed with notches (230), the connecting blocks (2311) on splicing plate one (231) are inserted into the splicing joint (24), and the near end of splicing plate two (232) is flat and abuts against the near end of the mold base (1).

8. The splicing mold for a stapler according to claim 7, characterized in that: The splicing joint (24) is formed by splicing a straight plate part (241) and a guide part (242). The straight plate part (241) includes a set of straight plates that abut against the end faces of the first splicing group (221) and the second splicing group (222), and the outer surface of the straight plate abuts against the inner wall of the mold base (1). The splicing plate transitions linearly with the top surfaces of the first splicing unit (21), the second splicing unit (22), and the third splicing unit (23). The two sides of the splicing plate in the middle are formed with slots that cooperate with the second splicing group (222) at the far end.

9. The splicing mold for a stapler according to claim 8, characterized in that: The bottom surface of the mold base (1) is still provided with a beryllium copper pad (11), and the mold core (2) is located on the beryllium copper pad (11).

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