Tip bending integrated forming die

Abstract

The utility model discloses a tip bending integrated forming die, and belongs to the technical field of medical instruments. And a plurality of groups of feeding ports are formed in the upper template. And one group of feeding ports corresponds to one forming groove. And each group of feeding ports comprises an upper feeding port and a lower feeding port. The upper feeding port is connected with a top whistle-shaped guide pipe head groove of the forming groove through an upper feeding hole. The lower feeding port is connected with the body pipe groove of the forming groove through the lower feeding hole. By adopting the design of the double feed openings of the forming die, silica gel raw materials with different hardness can be respectively put into the two feed openings, so that the combination of silica gel with different hardness is realized, the problem of complex and tedious processing of the bent whistle-shaped head is effectively solved, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a tip-bending integral molding mold for manufacturing the tip-bending whistle-shaped head of a large balloon catheter used for compression hemostasis after prostate surgery. Background Technology

[0002] Our company's curved, whistle-shaped tip large balloon catheter (three-lumen) is a large balloon catheter (40-60 ml) designed for compression hemostasis after transurethral resection of the prostate (TURP). The manufacturing process to achieve the curved, whistle-shaped tip is as follows: Figure 1 As shown, after the "tube body 5" is extruded, a processing technique is used to make the front end of the tube body (in a bent state). After being cut to a fixed length, two "drainage side holes 3" and one "flushing chamber hole 2" are opened. An adhesive bonding technique is used to attach the catheter tip made of contrast-enhancing silicone rubber. Figure 1 The tube is bonded to the main body at point A, and then the catheter tip is processed into the shape of "whistle-shaped catheter tip 1". Finally, the "balloon 4" and the "tube body 5" are assembled and bonded into a whole. In the entire processing and bonding process, the operation of the whistle-shaped catheter tip 1 is the most complicated. From bending the front end of the catheter tip, drilling the drainage side hole and flushing cavity hole, bonding the catheter tip and processing the whistle shape, a lot of time and labor costs are required. Utility Model Content

[0003] The purpose of this invention is to provide an integrated molding die for tip bending, which can combine two silicone rubbers of different hardness in one molding process, and can simultaneously achieve a bent tip shape, drainage side hole, flushing cavity hole and whistle-shaped conduit head.

[0004] The technical solution adopted is:

[0005] A tip bending integral forming mold includes an upper mold plate and a lower mold plate. A forming groove is provided between the upper mold plate and the lower mold plate.

[0006] The upper template has multiple sets of feeding ports. Each set of feeding ports corresponds to one forming groove.

[0007] Each set of feeding ports includes an upper feeding port and a lower feeding port.

[0008] The upper feeding port is connected to the top whistle-shaped guide tube groove of the forming groove through the upper feeding hole.

[0009] The lower feeding port is connected to the main body tube of the forming tank through the lower feeding hole.

[0010] Its advantages are:

[0011] The dual-outlet design of the molding die allows silicone raw materials of different hardness to be fed into the two outlets separately, thus achieving the bonding of silicones of different hardnesses. This effectively solves the complex and cumbersome processing problem of curved whistle heads, improving production efficiency. The body tube groove and the front curved whistle head structure are matched, and the front curved shape can be directly achieved through molding. The integrated molding structure of the drainage side hole, flushing cavity hole, and whistle head also reduces production costs. This is achieved through flat plate forming technology (…). Figure 2 The flat plate of section B is bent and formed, using the same silicone rubber material as the tube body. The one-piece molding technology saves a lot of manpower, financial resources and material resources. Attached Figure Description

[0012] Figure 1 This is a diagram illustrating the overall structure of a curved, whistle-shaped head large balloon catheter. Figure 1 The oval circle on the left side is the curved whistle head at the front.

[0013] Figure 2 This is a magnified view of a curved whistle head.

[0014] Figure 3 for Figure 1 A magnified view of part C in the middle.

[0015] Figure 4 This is a schematic diagram of the mold structure.

[0016] Figure 5 for Figure 4 Side view.

[0017] Figure 6 This is a structural diagram of the template above.

[0018] Figure 7 This is a structural diagram of the lower template.

[0019] 1. Whistle-shaped catheter tip; 2. Flushing chamber; 3. Drainage side hole; 4. Balloon; 5. Tube body; 6. Angiography line; 7. Balloon inflation chamber; 8. Flushing chamber; 9. Drainage chamber; 10. Valve; 11. Multi-purpose connector.

[0020] Main channel 22, flushing chamber channel 12.

[0021] Upper template 13, lower template 14, forming groove 15, upper feeding port 16, lower feeding port 17.

[0022] Upper feed hole 18, lower feed hole 19, body tube groove 20, whistle-shaped guide tube head groove 21. Detailed Implementation

[0023] An integrated bending die for tip forming includes an upper template 13 and a lower template 14.

[0024] Multiple feeding ports are provided on the upper template 13.

[0025] The upper template 13 has an upper forming groove, and the lower template 14 has a lower forming groove.

[0026] The upper forming groove and the lower forming groove interlock to form a forming groove 15.

[0027] One set of feeding ports corresponds to one forming groove 15.

[0028] Each set of feeding ports includes an upper feeding port 16 and a lower feeding port 17.

[0029] The upper feeding port 16 is connected to the top whistle-shaped guide tube head groove 21 (first position) of the forming groove 15 through the upper feeding hole 18.

[0030] The lower feeding port 17 is connected to the main body tube 20 (second position) of the forming groove 15 through the lower feeding hole 19.

[0031] The top whistle-shaped conduit head groove 21 and the main body groove 19 are connected.

[0032] The contrast-enhancing silicone rubber is fed into the upper feeding port 16 and enters the top whistle-shaped conduit head groove 19 to form the whistle-shaped conduit head 1.

[0033] Silicone rubber with a hardness of 85 degrees is fed into the lower feeding port 17 and enters the body tube groove 20 to form the body tube.

[0034] The forming groove 15 is curved and is designed with a top whistle-shaped guide tube head 1 corresponding to the whistle-shaped guide tube head 1, a flushing chamber hole 2 and a drainage side hole 3 corresponding to the forming position.

[0035] The flushing chamber hole 2 is connected to the flushing chamber flow channel 12 in the main body tube.

[0036] Two drainage side holes 3 are staggered on both sides of the main body tube, and both are connected to the main flow channel 22 in the main body tube, which is a through hole facing forward. Figure 2 As shown, one is located on the upper rear side of the main body tube, and the other is located on the lower front side of the main body tube.

[0037] The mold is first preheated on the equipment. Once the mold reaches the specified temperature, two silicone rubber blocks of different hardness are placed into the upper feeding port 16 and the lower feeding port 17, respectively. After the mold is closed, the equipment continues to apply the corresponding temperature and pressure to the mold. After a period of time, the silicone rubber flows from the upper feeding port 18 and the lower feeding port 19 into the top whistle-shaped guide tube head groove 19 and the main body tube groove 20, respectively. During the molding process, the different silicone rubbers are bonded together, while simultaneously forming the shape of the whistle-shaped guide tube head 1, the flushing cavity hole 2 on the surface, and the drainage side hole 3, finally forming a single-piece bent tip component. All mold surfaces are polished to ensure that the molded product has a smooth surface and is smooth and comfortable to the touch.

Claims

1. A tip bending integral forming mold, comprising an upper template (13) and a lower template (14); a forming groove (15) is provided between the upper template (13) and the lower template (14); characterized in that: Multiple sets of feeding ports are opened on the upper template (13); one set of feeding ports corresponds to one forming groove (15); Each set of feeding ports includes an upper feeding port (16) and a lower feeding port (17); The upper feeding port (16) is connected to the top whistle-shaped guide tube head groove (21) of the forming groove (15) through the upper feeding hole (18); The lower feeding port (17) is connected to the main body tube (20) of the forming groove (15) through the lower feeding hole (19).

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