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Production method of expanded polytetrafluoroethylene facial implants with different deflections

A technology of polytetrafluoroethylene and production methods, which is applied in the fields of nose implants, prostheses, medical science, etc., which can solve the problem of large gaps in fit and difficulty of implantation, inability to adapt to patients, and increasing doctors' operations Difficulty and other issues, to achieve the effect of reducing operation time, clear deflection, and reducing operation risk

Pending Publication Date: 2020-07-28
SHANGHAI KANGNING MEDICAL DEVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the large gaps in the feel, fit, and ease of implantation of actual products, doctors cannot accurately select the most suitable bulging body for patients, and cannot adapt to patients with different clinical conditions, which increases the difficulty of surgery for doctors and also increases the difficulty of implantation. It is difficult to guarantee the postoperative effect of different patients, and it is easy to cause medical disputes

Method used

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  • Production method of expanded polytetrafluoroethylene facial implants with different deflections
  • Production method of expanded polytetrafluoroethylene facial implants with different deflections

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Embodiment

[0042] A kind of production method of the expanded polytetrafluoroethylene facial implant of different deflection of the present invention, it comprises the following steps:

[0043] (1) Film production: By adjusting the stretching ratio of the stretching oven, under the stretching ratio of 2-6 times, various films with different stretching ratios are produced in the range of 2-6 times the stretching ratio sheet; in the process of making the film, adjust the temperature of the stretching oven to 250-260°C, the temperature of the stretching roller to 100-120°C, and adjust the stretching rate to 1-1.5m / min;

[0044] For example: under 2 times the stretching ratio, a film with 2 times the stretching ratio is produced;

[0045] Under the stretching ratio of 2.3 times, a film with a stretching ratio of 2.3 times is produced;

[0046] Under the stretching ratio of 2.5 times, a film with a stretching ratio of 2.5 times is produced;

[0047] At 3 times the stretching ratio, a film w...

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Abstract

The invention discloses a production method of expanded polytetrafluoroethylene facial implants with different deflections. The method comprises the following steps of (1) respectively manufacturing aplurality of membranes with different stretching ratios under 2 to 6 times of stretching ratios by adjusting the stretching ratio of a stretching drying oven; (2) selecting the same membranes with the same stretching ratio according to the required thickness of a product, and stacking and bonding the membranes together to obtain sheets; (3) fixing various different manufactured sheets through clamps and curing in the drying oven; (4) cutting the various different cured sheets into blocky expanded polytetrafluoroethylene products, or engraving the various different cured sheets into nose-shaped expanded polytetrafluoroethylene products by using an engraving machine; (5) carrying out deflection detection; and (6) distinguishing the expanded polytetrafluoroethylene products with different deflections according to a plurality of deflection gradients for clinical selection. According to the method, the deflection performance is combined with the expanded polytetrafluoroethylene, the expanded polytetrafluoroethylene products with different deflections are produced, the expanded polytetrafluoroethylene products with different deflections are distinguished according to the plurality of deflection gradients, and more choices are provided for doctors and patients.

Description

technical field [0001] The invention belongs to the technical field of production of expanded polytetrafluoroethylene, and relates to a production method of expanded polytetrafluoroethylene facial implants with different deflections. Background technique [0002] At present, among the performance indicators of expanded polytetrafluoroethylene facial implants, there is generally only a description of hardness. According to the research on products in production practice, it is found that it is not enough to describe the physical properties of products only by hardness. Under the same hardness, bulky products can show different flexures, that is, products with low deflection are not easy to bend and are straighter; products with high deflection are easy to bend and show more flexible characteristics. The characteristics of the deflection will affect the shape of the postoperative rhinoplasty: if the deflection is low, the bridge of the nose is generally straight and shaped; i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/00A61F2/18
CPCB29C69/00A61F2/186A61F2240/001A61F2240/008
Inventor 侯再英马陆军朱庆李锦蓓
Owner SHANGHAI KANGNING MEDICAL DEVICE
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