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Shaping mandrel

A technology for shaping cores and shafts, applied in the field of medical devices, can solve the problems of wearing fabrics, taking a long time, and not being able to make parallel loops, etc., to save time and facilitate the disassembly process

Pending Publication Date: 2021-12-03
ACCUPATH MEDICAL JIAXING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing corrugation treatment method uses a screw-like mandrel with a spiral thread on its surface. The woven tubular fabric is placed on the mandrel, and then the yarn is used to wind, shape, etc., and finally the tubular fabric Unscrew from the mandrel to obtain a threaded artificial blood vessel; but the prior art has the following defects: (1) the shape of the thread can only be a spiral type, and cannot be made into other shapes such as parallel circles; (2) screwing The process takes a long time; (3) There is a risk of wearing the fabric during the screwing process

Method used

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  • Shaping mandrel
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 As shown, the shaping mandrel includes a shaft portion 1 , a shaping portion 2 and a pair of fixing portions 3 . The shaping part 2 includes a shaping part 21, the shaping part 2 is composed of splicing at least two petals of a single structure, the fixing part 3 is detachably connected with the shaping part 2, and is used to make the at least two petals The flap unit structure fits on the outer surface of the shaft part 1 to form a whole.

[0043] Such as Figure 4 As shown, the specific structure of the shaft is introduced in detail below:

[0044] The shaft part includes a first part 11 , a second part 12 and a transition part 13 , and the transition part 13 is formed at the junction of the first part 11 and the second part 12 . The second part 12 is a handle for holding, and the shaft part is made of metal material or plastic material. Preferably, the shaft part 1 of the first embodiment is made of stainless steel material.

[0045] Such as Fi...

Embodiment 2

[0063] Embodiment 2 is roughly the same as Embodiment 1 and also has a shaft portion 1, a shaped portion 2 and a pair of fixing portions 3, and its shaped portion 2 is also composed of a four-petal single structure spliced ​​together, but Embodiment 2 is the same as Embodiment 1. The difference is as follows:

[0064] Such as Figure 7 Shown, introduce the specific structure of the shaft part in embodiment two below:

[0065] In the second embodiment, the shaft part 1 is made of nylon, and the length of the shaft part 1 is 80 cm. The transition portion 13 is a cylindrical transition, and the diameter of the transition portion 13 is the same as that of the second portion 12 . The first part 11 is a cylindrical structure; the transition part 13 is formed at the connection between one end of the first part 11 and the second part 12, and the other end of the first part 11 is a free end.

[0066] Introduce the concrete structure of shaping section 2 in embodiment two below:

[...

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Abstract

The invention relates to a shaping mandrel which comprises a shaft part, a shaping part and at least one pair of fixing parts, wherein the shaping part comprises a molding part, the shaping part is formed by splicing at least two single structures, and the fixing parts are detachably connected with the shaping part, so that the at least two single structures are matched to form a whole on the outer surface of the shaft part. According to the shaping mandrel, the shaping part is cut into multiple single structures in a linear cutting mode, the shaping part is provided with the moulding parts and the non-moulding parts, the moulding parts can be set to be different threads of a spiral type, a parallel coil type and the like and can be spliced into a whole or disassembled, and therefore the limitation of a thread structure of the artificial blood vessel is broken through.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a shaping mandrel for threaded blood vessels. Background technique [0002] Artificial blood vessels are commonly used medical devices for replacement in the treatment of vascular lesions. At present, the existing artificial blood vessels are mainly prepared by weaving PET yarns and expanded polytetrafluoroethylene. Among them, the artificial blood vessel woven with PET yarn has poor stretchability and supporting force due to the softness of the fabric, and is easy to be flattened or sucked. Therefore, it needs to be corrugated, and the corrugated treatment is to shape the original flat tubular fabric into a helical artificial blood vessel with ups and downs on the mold. The corrugated thread-shaped artificial blood vessel has good flexibility and longitudinal expansion rate, and can be used as an artificial blood vessel. [0003] At present, the existing corrugation tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C53/82B29C53/30
CPCB29C53/82B29C53/30B29L2031/7532
Inventor 谷子琦明景赵海娜马晓曼阙亦云
Owner ACCUPATH MEDICAL JIAXING CO LTD