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Medical variable-diameter intubation tube forming process and intubation tube

A molding process and intubation technology, applied in the direction of catheters, etc., can solve the problems of difficulty in demoulding injection molding of variable diameter joints, high cost of manufacturing molds for variable diameter joints, and many defective injection molded parts, so as to reduce blood damage, The effect of preventing blood flow from dead angle position and high molding yield rate

Active Publication Date: 2021-04-06
DONGGUAN KEWEI MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the variable diameter joint with the variable diameter end or the variable diameter structure needs to be injection molded through the injection molding process, but because of the existence of the variable diameter structure, the variable diameter Diameter joints are very difficult to demould during injection molding, resulting in more defective injection molded parts, and the production cost of variable diameter joint molds is higher than that of regular shape joint molds

Method used

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  • Medical variable-diameter intubation tube forming process and intubation tube
  • Medical variable-diameter intubation tube forming process and intubation tube
  • Medical variable-diameter intubation tube forming process and intubation tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] refer to figure 1 and figure 2 , figure 1 It is the flow chart of the traditional Chinese medicine variable diameter cannula molding process of embodiment one, figure 2 It is a schematic structural diagram of the intubation main body, the reducing mandrel, the sleeve main body and the heat shrinkable sleeve in the first embodiment. The medical reducing diameter cannula molding process in this embodiment includes the following steps:

[0046] S1 , the cannula body 1 is sleeved on the reducing mandrel 2 .

[0047] S2, the cannula body 3 is sleeved outside the cannula body 1 and the diameter reducing mandrel 2 .

[0048] S3 , sleeve the heat shrinkable sleeve 4 on the outside of the sleeve body 3 .

[0049] S4, the heat shrinkable sleeve 4 is heated, and the heat shrinkable sleeve 4 is heat-shrinked and wrapped on the sleeve body 3, so that the sleeve body 3 is adapted to the reducing mandrel 2 for reducing the diameter, and the sleeve body 3 and the sleeve body 3 a...

Embodiment 2

[0062] refer to Figure 9 , Figure 9 It is a schematic structural diagram of the inner tube, the outer tube, the reinforcing rib, the reducing mandrel, the casing main body and the heat shrinkable casing in the second embodiment, Figure 10 It is a schematic diagram of the cooperation of the inner tube, the reinforcing rib, and the outer tube in sequence with the reducing mandrel in the second embodiment. The difference between the medical reducing diameter cannula molding process in this embodiment and the first embodiment is:

[0063] In step S1, the sleeve body 1 of the cannula on the reducing mandrel 2 includes the following steps:

[0064] S11 , sleeve the inner tube 11 on the outside of the first shaft portion 21 , the diameter-reducing shaft portion 22 and the second shaft portion 23 .

[0065] S12 , the reinforcing rib 12 is sleeved outside the inner tube 11 .

[0066] S13 , the outer tube 13 is sleeved outside the reinforcing rib 12 .

[0067] It can be understo...

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Abstract

The invention discloses a forming process of a medical variable-diameter intubation tube. The forming process comprises the following steps: sleeving a variable-diameter mandrel with an intubation tube main body; sleeving a sleeve main body outside the variable-diameter mandrel and the intubation tube main body; arranging a heat-shrinkable sleeve outside the sleeve main body in a sleeving manner; heating the heat-shrinkable sleeve, and thermally shrinking the heat-shrinkable sleeve and wrapping the sleeve main body, so that the sleeve main body adapts to the variable-diameter mandrel for reducing, and the sleeve main body is welded with the intubation tube main body; and the invention further discloses the intubation tube. The sleeve main body replaces a variable-diameter joint with a variable-diameter structure to participate in forming of the reducing insertion tube, the forming of the sleeve main body is simpler than that of the variable-diameter joint, the forming yield of the sleeve main body is high, the forming cost is lower, the insertion tube main body and the sleeve main body are of an integrated structure in a fusion welding state, and the sleeve main body is not prone to deformation. The produced reducing intubation tube is free of gaps, blood flows smoothly in the intubation tube, blood flowing dead corners are prevented, pressure loss is reduced, and blood damage caused by long-time use is reduced.

Description

technical field [0001] The present invention relates to the technical field of arterial and venous cannula, in particular, to a molding process and cannula of a medical variable-diameter cannula. Background technique [0002] The name is "Medical Variable Diameter Intubation Forming Process and Intubation", and the patent publication number is "CN111672008A", which discloses a medical variable diameter intubation forming process. In the above-mentioned forming process of the medical variable diameter cannula, specifically, a solution is adopted in which the variable diameter end of the variable diameter joint and the end of the main body of the cannula are subjected to interference fit and then welded, and the variable diameter joint with the variable diameter end is the solution. It is necessary to produce a reducing joint with a reducing end before the above-mentioned medical reducing intubation forming process can be carried out. [0003] In the prior art, a reducing joi...

Claims

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Application Information

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IPC IPC(8): A61M25/00
CPCA61M25/0009
Inventor 郑剑波刘志军马奔袁栋平
Owner DONGGUAN KEWEI MEDICAL INSTR