Soft tissue expander integrated injection mold and integrated injection manufacturing method

Abstract

The present invention discloses a soft tissue expander integrated injection mold and an integrated injection manufacturing method. The mold includes an upper mold, a lower mold, a pin and a movable pin template; one side of the lower mold is vertically arranged side by side with a plurality of circular grooves corresponding to the shape and size of the injection valve; the middle of the lower mold is vertically arranged side by side with a plurality of long semicircular tubular grooves corresponding to the shape and size of half of the connecting catheter; the front end of the long semicircular tubular groove has an extension section, i.e. a small section of semicircular tubular steel bar inserted into the circular groove corresponding to the injection valve part; the other side of the lower mold is a groove for placing the movable pin template; the upper mold is vertically arranged side by side with a plurality of long semicircular tubular grooves corresponding to the shape and size of the other half of the connecting catheter; the upper part of the side of the movable pin template is provided with a plurality of jacks for inserting the pin. The integrated injection mold optimizes the injection manufacturing process, reduces product equipment, facilities and energy consumption, and improves the performance of the soft tissue expander.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices and relates to a soft tissue expander integrated injection piece mold and an integrated injection piece manufacturing method. Background Art

[0002] The manufacturing and processing of existing soft tissue expander injection parts requires the use of three molds, namely the injection valve, injection valve cover, and connecting catheter; and three processing equipment, namely the semi-automatic pressure molding machine, extrusion vulcanizer, and capping machine. There are a total of 6 processing equipment and molds, all of which require regular maintenance.

[0003] The existing process of manufacturing a molded injection part is: firstly, a single injection valve, a small steel bowl, an injection valve cover plate, a connecting conduit and other accessories are manufactured separately, and then these single accessories are bonded and assembled into a molded injection part.

[0004] The existing processing technology of a molded injection part includes five process steps: injection valve pressing, small steel bowl cleaning, injection valve sheet pressing, connecting tube pressing, and bonding assembly, which requires at least four positions (injection valve pressing and injection valve sheet pressing can be combined into one position) to complete.

[0005] In short, soft tissue expander injection parts are produced using existing molds and equipment, with complex processing technology, low production efficiency and low pass rate; each accessory has a pass rate requirement, and high requirements are placed on operators. Each operator who can manufacture qualified injection parts needs to be trained for 6 months. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a soft tissue expander integrated injection part mold and an integrated injection part manufacturing method that can optimize the injection part manufacturing process, reduce product equipment, facilities, and energy consumption, and improve the performance of the soft tissue expander.

[0007] The technical solution of the present invention is as follows:

[0008] The present invention discloses a mold for an integrated injection piece of a soft tissue expander, which includes an upper mold and a lower mold, and also includes an insertion pin and a movable insertion pin template; the lower mold is a flat plate with a plurality of grooves provided thereon: a plurality of circular grooves corresponding to the shape and size of an injection valve (i.e., circular grooves corresponding to the injection valve part) are vertically arranged side by side on one side of the lower mold, a plurality of long semicircular tube-shaped grooves corresponding to the shape and size of half of a connecting conduit (i.e., long semicircular tube-shaped grooves corresponding to half of a connecting conduit part) are vertically arranged side by side in the middle of the lower mold, and a groove capable of placing a movable insertion pin template (i.e., a groove corresponding to the movable insertion pin template part) is provided on the other side of the lower mold; The front end of the long semicircular tubular groove corresponding to one half of the connecting duct portion has an extension section (i.e. a small section of a semicircular tubular steel bar) inserted into the circular groove of the corresponding injection valve portion; the upper mold is a flat plate that is shorter than the lower mold (the upper mold lacks the groove corresponding to the movable pin template portion on the lower mold), and a plurality of transverse long semicircular tubular grooves corresponding to the shape and size of the other half of the connecting duct (i.e. the long semicircular tubular groove corresponding to the other half of the connecting duct portion) are arranged vertically side by side; the upper part of the side surface of the movable pin template is provided with a plurality of insertion holes for inserting pins; the pins are inserted into the insertion holes of the movable pin template.

[0009] Furthermore, the mold also includes a small steel bowl placed in the circular groove corresponding to the injection valve part; the bottom plate diameter of the small steel bowl is the same as the opening diameter, and is slightly smaller than the diameter of the circular groove of the corresponding injection valve part; the bottom plate of the small steel bowl is located deeper in the circular groove, and the outside of the bottom plate of the small steel bowl is close to the solid rubber in the circular groove, and the opening of the small steel bowl is located shallower in the circular groove, close to the opening of the circular groove, but with a certain distance between the two; a small hole with the same outer diameter as the connecting conduit is provided on one side of the small steel bowl, which can be connected to the connecting conduit.

[0010] Further, the small steel bowl is placed in the middle position of the circular groove corresponding to the injection valve part.

[0011] Furthermore, the upper section of the movable pin steel template is a square body, and the lower section is a square cone body that is wide at the top and narrow at the bottom (that is, the two outer side surfaces of the lower section are inclined surfaces, and the cross-sectional shape of the lower section is an inverted trapezoid).

[0012] Furthermore, the upper mold and the lower mold of the mold are made of metal.

[0013] Furthermore, the upper mold and the lower mold of the mold are made of stainless steel.

[0014] Furthermore, the movable pin template is made of metal.

[0015] Furthermore, the movable pin template is made of stainless steel, i.e., a movable pin steel template. The small steel bowl is made of stainless steel.

[0016] The improved manufacturing process of the one-piece injection part of the soft tissue expander is to vulcanize and mold the four accessories, namely, the injection valve, the small steel bowl, the injection valve cover plate and the connecting catheter, into one piece through a modified mold (i.e., the one-piece injection part mold of the soft tissue expander of the present invention) to directly obtain the one-piece injection part.

[0017] A method for manufacturing an integrated injection piece using the above-mentioned soft tissue expander integrated injection piece mold is as follows:

[0018] 1) Place a piece of solid rubber corresponding to the injection valve in the middle of the circular groove (corresponding to the position of the injection valve) corresponding to the injection valve part on the lower mold, and place a small steel bowl on the solid rubber in the circular groove corresponding to the injection valve part, with the bottom plate of the small steel bowl located at a deeper part of the circular groove, and the outside of the bottom plate of the small steel bowl close to the solid rubber in the circular groove, and the opening of the small steel bowl located at a shallower part of the circular groove, close to the opening of the circular groove, but with a certain distance between the two; at the same time, connect (touch) the small hole on the side of the small steel bowl with the front end extension section of the long semicircular tubular groove of the corresponding connecting conduit;

[0019] 2) On the lower mold, lay solid rubber material in the long semicircular tubular groove corresponding to half of the connecting duct part (corresponding to the position of the connecting duct);

[0020] 3) Place the movable pin steel template at the corresponding position on the lower mold (corresponding to the movable pin steel template part), that is, place it in the groove on the lower mold where the movable pin steel template can be placed; insert one end of the pin into the plug hole on the movable pin steel template; correspondingly, insert the other end of the pin through the small hole on the side of the small steel bowl, insert it into the small steel bowl, and place the pin flat on the solid rubber material in the long semicircular groove corresponding to half of the connecting catheter;

[0021] 4) Clamp the mold (align and merge the upper mold and the lower mold, that is, align and merge the long semicircular tubular groove corresponding to the half of the connecting duct part on the lower mold with the long semicircular tubular groove corresponding to the other half of the connecting duct part on the upper mold), and put the entire mold into a semi-automatic pressure molding machine for vulcanization molding;

[0022] 5) Take out the mold, cool it down, and open the mold (open and take down the upper mold). At this time, the outer shape of the connecting duct part and the injection valve part have been formed.

[0023] 6) A layer of solid rubber corresponding to the injection valve cover sheet is evenly spread on the opening position of the circular groove corresponding to the injection valve part on the lower mold, that is, the opening of the small steel bowl;

[0024] 7) Close the mold and put the entire mold into a semi-automatic pressure molding machine for vulcanization molding;

[0025] 8) Take out the mold and cool it; open the mold (open and remove the upper mold); at this time, the shape of the connecting duct part, the injection valve part and the injection valve cover sheet part have been formed;

[0026] 9) Push the movable pin steel template on the lower die outward a little to separate it from the pin, and remove the movable pin steel template upward from the groove on the lower die; then, remove the pressed one-piece injection part from the lower die, and use tweezers to pull the pin out of the one-piece injection part; the channel left after pulling out the pin is the internal channel of the connecting conduit of the one-piece injection part;

[0027] 10) For the one-piece injection piece manufactured as above, the waste edges are trimmed with scissors, thus completing the entire manufacturing process of the one-piece injection piece and obtaining a plurality of one-piece injection pieces of soft tissue expanders.

[0028] Furthermore, in the above steps 4) and 7), the vulcanization molding temperature is 120-130° C. and the time is 5-8 min.

[0029] Furthermore, in the above steps 1), 2), 3) and 6), the solid rubber material is a long-term implantable soft solid silicone rubber.

[0030] Beneficial effects of the present invention:

[0031] The soft tissue expander integrated injection piece mold of the present invention optimizes the injection piece manufacturing process, reduces product equipment, facilities, and energy consumption, and improves the performance of the soft tissue expander.

[0032] The soft tissue expander one-piece injection part mold of the present invention refers to the shapes of the existing injection valve, injection valve cover plate, and connecting catheter equipment and integrates them into a mold; reduces the energy consumption of mold, equipment, and product preparation, optimizes the process operation, and improves the process qualification rate; improves the overall performance of the product, and the injection parts assembled by bonding and assembly are not as strong as the one-piece molded injection parts and have beautiful appearance.

[0033] The soft tissue expander integrated injection mold of the present invention has the following advantages:

[0034] 1) After the molds were merged, the original three molds were reduced to one mold, which reduced the workload in mold processing, maintenance, and upkeep.

[0035] 2) After the molds are merged, the number of injection molding manufacturing and processing equipment is reduced from 3 to 1, and only one compression molding equipment, i.e., a semi-automatic compression molding machine, is needed to complete the manufacturing and processing. In addition, the extrusion vulcanizer can no longer be used.

[0036] 3) Improved soft tissue expander performance. The one-piece injection molding greatly improves the puncture sealing and needle limiter performance.

[0037] 4) The manufacturing process of injection parts is optimized. There is no need to manufacture 4 parts first and then assemble them. It only needs to be molded in one piece, which improves the working hours, reduces the process, and optimizes the process.

[0038] 5) After optimizing the soft tissue expander injection mold, the process steps are reduced, the working hours are increased, and the requirements for operators are not high. Each operator who can prepare qualified injection parts only needs 1-2 weeks of training before they can start working. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the top view of the lower mold 1 in the mold of the soft tissue expander integrated injection piece of the present invention;

[0040] Figure 2 It is a schematic side view of the structure of the lower mold 1 in the mold of the soft tissue expander integrated injection piece of the present invention;

[0041] Figure 3 It is a schematic diagram of the top structure of the upper mold 2 in the mold of the soft tissue expander integrated injection piece of the present invention;

[0042] Figure 4 It is a schematic side cross-sectional structure diagram of a compression-molded one-piece injection molded part made by the mold of the present invention (the insertion pin 3 is not pulled out).

[0043] In the figure: 1, lower mold 2, upper mold 3, pin 4, movable pin steel template 5, small steel bowl 6, circular groove corresponding to injection valve part 7, long semicircular tubular groove corresponding to half of connecting conduit part 8, groove corresponding to movable pin steel template part 9, a small section of semicircular tubular steel strip 10, solid rubber material 11, injection valve part 12, connecting conduit part 13, injection valve cover plate part 21, long semicircular tubular groove 41 corresponding to the other half of connecting conduit part, plug hole 51, bottom plate 52, opening 53, small hole DETAILED DESCRIPTION

[0044] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0045] Example

[0046] like Figure 1 , Figure 2As shown, the present invention is a soft tissue expander integrated injection mold, the mold includes an upper mold 2 and a lower mold 1, and also includes a pin 3 and a movable pin steel template 4; the lower mold 1 is a metal flat plate with a plurality of grooves: one side of the lower mold is vertically arranged side by side with four circular grooves corresponding to the shape and size of the injection valve (i.e., the circular groove 6 corresponding to the injection valve part), the middle of the lower mold is vertically arranged side by side with four long semicircular tube-shaped grooves corresponding to the shape and size of half of the connecting catheter (i.e., the long semicircular tube-shaped groove 7 corresponding to half of the connecting catheter part), and the other side of the lower mold is provided with a groove for placing the movable pin steel template (i.e., the groove 8 corresponding to the movable pin steel template part); the The front end of the long semicircular tubular groove of the half connecting conduit part has an extension section (i.e. a small section of semicircular tubular steel bar 9) inserted into the circular groove 6 of the corresponding injection valve part; the upper mold 2 is a metal flat plate shorter than the lower mold 1 (the upper mold 2 lacks the groove 8 of the corresponding movable plug-in pin steel template part on the lower mold 1), and four transverse long semicircular tubular grooves corresponding to the shape and size of the other half of the connecting conduit (i.e. the long semicircular tubular groove 21 corresponding to the other half of the connecting conduit part) are arranged vertically side by side; the upper part of the side of the movable plug-in pin steel template 4 is provided with a plurality of insertion holes 41 for inserting the plug pins 3; the plug pins 3 are inserted into the insertion holes 41 of the movable plug-in pin template 4. The upper section of the movable plug-in pin steel template 4 is a rectangular parallelepiped, and the lower section is a square cone with a wide upper part and a narrow lower part (i.e. the two outer side surfaces of the lower section are inclined surfaces, and the cross-sectional shape of the lower section is an inverted trapezoid).

[0047] The mold also includes a small steel bowl 5 placed in the circular groove 6 of the corresponding injection valve part; the diameter of the bottom plate 51 of the small steel bowl 5 is the same as the diameter of the opening 52, which is smaller than the diameter of the circular groove 6 of the corresponding injection valve part (i.e. the diameter of the injection valve). The height of the small steel bowl 5 is about half of the height of the circular groove 6 of the corresponding injection valve part. The bottom diameter of the injection valve is 12mm, the bottom plate diameter of the small steel bowl is 7mm, and the small steel bowl 5 is placed in the middle position of the circular groove 6 of the corresponding injection valve part. The height of the small steel bowl is 4mm, and the height of the injection valve is 8mm. The bottom plate 51 of the small steel bowl 5 is located in the deeper part of the circular groove 6, and the outside of the bottom plate 51 of the small steel bowl 5 is close to the solid rubber in the circular groove 6. The opening 52 of the small steel bowl 5 is located in the shallower part of the circular groove 6, close to the opening of the circular groove 6, but there is a certain distance (1-2mm) between the two; a small hole 53 with the same outer diameter as the connecting conduit is provided on one side of the small steel bowl 5, which can be connected to the connecting conduit. The small steel bowl 5 is outsourced and machined according to the drawings.

[0048] The upper die 2 and the lower die 1 of the mold are made of stainless steel.

[0049] The above-mentioned soft tissue expander integrated injection piece mold can be used to manufacture four soft tissue expander integrated injection pieces at one time.

[0050] The method for manufacturing an integrated injection piece using the above-mentioned soft tissue expander integrated injection piece mold, that is, the specific processing steps of manufacturing and processing the soft tissue expander integrated injection piece using the integrated injection piece mold of the present invention are as follows:

[0051] 1) Place a piece of solid rubber 10 corresponding to the injection valve part 11 (i.e., a piece of solid rubber of corresponding weight to be filled into the injection valve part 11, weighing about 2.5g, with a diameter of about 8mm and a thickness of about 3mm, and the shape of the rubber may not be very regular) in the middle part of the circular groove 6 (corresponding to the position of the injection valve) corresponding to the injection valve part on the lower mold; Place a small steel bowl 5 on the solid rubber 13 in the circular groove 6 corresponding to the injection valve part, the bottom plate 51 of the small steel bowl 5 is located in the deeper part of the circular groove, the outside of the bottom plate 51 of the small steel bowl 5 is in close contact with the solid rubber 10 in the circular groove, and the opening 52 of the small steel bowl 5 is located in the shallower part of the circular groove, close to the opening of the circular groove, but there is a certain distance between the two; at the same time, connect (touch) the small hole 53 on the side of the small steel bowl with the front end extension section of the long semicircular tubular groove of the corresponding connecting conduit;

[0052] 2) On the lower mold 1, a solid rubber material 10 corresponding to the connecting duct portion 12 is laid flat in the long semicircular tubular groove 7 (corresponding to the position of the connecting duct) corresponding to half of the connecting duct portion;

[0053] 3) Place the movable pin steel template 4 at the corresponding position on the lower mold 1 (corresponding to the movable pin steel template portion), that is, place it on the groove 8 on the lower mold 1 where the movable pin steel template can be placed; insert one end of the pin 3 into the insertion hole 41 on the movable pin steel template 4; correspondingly, pass the other end of the pin 3 through the small hole 53 on the side of the small steel bowl 5 and insert it into the small steel bowl 5, and place the pin 3 flat on the solid rubber material 10 in the long semicircular tubular groove 7 corresponding to half of the connecting catheter;

[0054] 4) Clamp the mold (align and merge the upper mold and the lower mold, that is, align and merge the long semicircular tubular groove 7 on the lower mold 1 corresponding to the half of the connecting duct part with the long semicircular tubular groove 21 on the upper mold 2 corresponding to the other half of the connecting duct part), and put the entire mold into a semi-automatic pressure molding machine for vulcanization molding; the vulcanization molding temperature is about 125°C and the time is 6 minutes; (This step is mainly to press and mold the injection valve part 11 and the connecting duct part 12)

[0055] 5) Take out the mold and cool it; open the mold (open and remove the upper mold 2 pressed on the lower mold 1); at this time, the outer shape of the connecting conduit part 12 and the injection valve part 11 have been formed;

[0056] 6) A layer of solid rubber material 10 corresponding to the injection valve cover sheet 13 is evenly laid on the opening position of the circular groove 6 corresponding to the injection valve part on the lower mold 1, that is, the opening 52 of the small steel bowl 5;

[0057] 7) Close the mold and put the entire mold into a semi-automatic pressure molding machine for vulcanization molding; the vulcanization molding temperature is about 125°C and the time is 6 minutes; (This step is mainly to press and mold the injection valve cover piece 13)

[0058] 8) Take out the mold and cool it; open the mold (open and remove the upper mold 2 pressed on the lower mold 1); at this time, the shape of the connecting conduit part 12, the injection valve part 11 and the injection valve cover sheet part 13 have been formed;

[0059] 9) Push the movable pin steel template 4 on the lower mold 1 outward a little to separate it from the pin 3, and take out the movable pin steel template 4 from the groove on the lower mold 1 (i.e., the groove 8 corresponding to the movable pin steel template); then, take out the pressed one-piece injection molded part from the lower mold 1, and use tweezers to pull out the pin 3 from the one-piece injection molded part; the channel left after pulling out the pin 3 is the internal channel of the connecting conduit part 12 of the one-piece injection molded part;

[0060] 10) The waste edges of the one-piece injection piece manufactured above are trimmed with scissors, thus completing the entire manufacturing process of the one-piece injection piece and obtaining four one-piece injection pieces of soft tissue expanders.

[0061] The solid rubber material 10 used in this embodiment is a long-term implantable soft solid silicone rubber, which is one or two of the American nusilMED47 series solid silicone rubber products.

Claims

1. A soft tissue expander integrated injection mold, characterized in that: The mold includes an upper mold and a lower mold, and also includes a pin and a movable pin template; the lower mold is a flat plate with multiple grooves: one side of the lower mold is vertically arranged with multiple circular grooves corresponding to the shape and size of the injection valve, that is, the circular grooves corresponding to the injection valve part; the middle of the lower mold is vertically arranged with multiple long semicircular tubular grooves corresponding to half of the shape and size of the connecting conduit, that is, the long semicircular tubular grooves corresponding to half of the connecting conduit; the mold also includes a small steel bowl placed in the circular groove corresponding to the injection valve part, and a small hole with the same outer diameter as the connecting conduit is provided on one side of the small steel bowl, which can be connected to the connecting conduit, and the opening of the small steel bowl is located in a shallower part of the circular groove, close to the opening of the circular groove, but there is a certain distance between the two, and at the same time, the small hole on the side of the small steel bowl is connected to the corresponding connecting conduit. The front end extension section of the long semicircular tubular groove of the catheter is connected; the other side of the lower mold is a groove for placing a movable pin template, that is, a groove corresponding to the movable pin template part; the front end of the long semicircular tubular groove corresponding to one half of the connecting catheter part has an extension section, that is, a small section of semicircular tubular steel bar inserted into the circular groove corresponding to the injection valve part; the upper mold is a flat plate shorter than the lower mold, on which a plurality of horizontal long semicircular tubular grooves corresponding to the shape and size of the other half of the connecting catheter are arranged vertically side by side, that is, the long semicircular tubular groove corresponding to the other half of the connecting catheter part; the upper part of the side of the movable pin template is provided with a plurality of insertion holes for inserting the pin; one end of the pin is inserted into the insertion hole of the movable pin template, and the other end of the pin is correspondingly inserted into the small steel bowl through the small hole on the side of the small steel bowl.

2. The soft tissue expander integrated injection mold according to claim 1, characterized in that: The bottom plate diameter of the small steel bowl is the same as the opening diameter, which is smaller than the diameter of the circular groove of the corresponding injection valve part; the bottom plate of the small steel bowl is located deeper in the circular groove, and the outside of the bottom plate of the small steel bowl is closely attached to the solid rubber in the circular groove.

3. The soft tissue expander integrated injection mold according to claim 1, characterized in that: The small steel bowl is placed in the middle position of the circular groove corresponding to the injection valve part.

4. The soft tissue expander integrated injection mold according to claim 1, characterized in that: The upper section of the movable pin template is a square body, and the lower section is a square cone body that is wide at the top and narrow at the bottom.

5. The soft tissue expander integrated injection mold according to any one of claims 1 to 4, characterized in that: The upper die and the lower die of the mold are made of metal.

6. The soft tissue expander integrated injection mold according to claim 5, characterized in that: The upper die and the lower die of the mold are made of stainless steel.

7. The soft tissue expander integrated injection mold according to claim 6, characterized in that: The movable pin template is made of metal.

8. The soft tissue expander integrated injection mold according to claim 7, characterized in that: The movable pin template is made of stainless steel, which is a movable pin steel template; the small steel bowl is made of stainless steel.

9. A method for manufacturing an integrated injection part using the soft tissue expander integrated injection part mold according to claim 8, characterized in that: The steps include: 1) Place a piece of solid rubber corresponding to the injection valve in the middle of the circular groove corresponding to the injection valve part on the lower mold, place a small steel bowl on the solid rubber in the circular groove corresponding to the injection valve part, the bottom plate of the small steel bowl is located in the deeper part of the circular groove, the outside of the bottom plate of the small steel bowl is close to the solid rubber in the circular groove, the opening of the small steel bowl is located in the shallower part of the circular groove, close to the opening of the circular groove, but there is a certain distance between the two; at the same time, the small hole on the side of the small steel bowl is connected to the front end extension section of the long semicircular tubular groove of the corresponding connecting guide tube, that is, it touches; 2) On the lower mold, lay solid rubber material in the long semicircular groove corresponding to half of the connecting duct part; 3) Place the movable pin steel template at the corresponding position on the lower mold, that is, in the groove on the lower mold where the movable pin steel template can be placed; insert one end of the pin into the insertion hole on the movable pin steel template; insert the other end of the pin through the small hole on the side of the small steel bowl, and place the pin flat on the solid rubber material in the long semicircular groove of the corresponding half of the connecting catheter; 4) Clamping the mold, aligning and merging the upper mold and the lower mold, that is, aligning and merging the long semicircular tubular groove corresponding to the half of the connecting duct part on the lower mold with the long semicircular tubular groove corresponding to the other half of the connecting duct part on the upper mold; placing the entire mold in a semi-automatic pressure molding machine for vulcanization molding; 5) Take out the mold and cool it; open the mold and take down the upper mold; at this time, the outer shape of the connecting duct part and the injection valve part have been formed; 6) A layer of solid rubber corresponding to the injection valve cover sheet is evenly spread on the opening position of the circular groove corresponding to the injection valve part on the lower mold, that is, the opening of the small steel bowl; 7) Close the mold, align the upper mold and the lower mold and merge them; put the entire mold into a semi-automatic pressure molding machine for vulcanization molding; 8) Take out the mold and cool it; open the mold and take down the upper mold; at this time, the outer shape of the connecting conduit part, the injection valve part and the injection valve cover sheet part have been formed; 9) Push the movable pin steel template on the lower die outward a little to separate it from the pin, and remove the movable pin steel template upward from the groove on the lower die; then, remove the pressed one-piece injection part from the lower die, and use tweezers to pull the pin out of the one-piece injection part; the channel left after pulling out the pin is the internal channel of the connecting conduit of the one-piece injection part; 10) The waste edges of the one-piece injection piece manufactured above are trimmed with scissors, thus completing the entire manufacturing process of the one-piece injection piece and obtaining a plurality of one-piece injection pieces of soft tissue expanders.

10. The method for manufacturing an integrated injection part according to claim 9, characterized in that: In the above steps 4) and 7), the vulcanization molding temperature is 120-130° C. and the time is 5-8 minutes.

11. The method for manufacturing an integrated injection part according to claim 10, wherein: In the above steps 1), 2), 3) and 6), the solid rubber material is a long-term implantable soft solid silicone rubber.

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