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Engineering plastics, preparation method and application for preparing surgical operating instrument

A technology for engineering plastics and surgery, applied in the field of engineering plastics, can solve the problem that polyamide cannot meet the dimensional stability of surgical instruments, and achieve the effects of high dimensional stability, excellent colorability, and good anticoagulation.

Inactive Publication Date: 2016-06-08
SHANGHAI XUEFENG PRECISION MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since surgical instruments usually need to be sterilized for multiple cycles at high temperature, so as to be used multiple times, polyamide cannot meet the requirements for dimensional stability of surgical instruments, and can only be used as a disposable product at present.

Method used

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  • Engineering plastics, preparation method and application for preparing surgical operating instrument
  • Engineering plastics, preparation method and application for preparing surgical operating instrument
  • Engineering plastics, preparation method and application for preparing surgical operating instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of the hemostat. formula:

[0036]

[0037] Described coupling agent is silane coupling agent A-1120;

[0038] The high temperature lubricant is polyorganosiloxane, and the antistatic agent is carbon black.

[0039] Preparation:

[0040] (1) The glass fiber is first oxidized with nitric acid, the specific steps are as follows:

[0041] Soak the glass fibers in concentrated nitric acid for 20 minutes to remove impurities on the surface of the fibers and increase the surface roughness, then wash them with deionized water until neutral, and dry them in a vacuum oven at 110°C for 2 hours.

[0042] (2) adding the treated glass fiber and coupling agent into a high mixer and mixing to obtain modified glass fiber;

[0043] (3) Dry polyether ether ketone, polyphenylene sulfone, and polyether sulfone at 110° C. for 3 hours;

[0044] (4) Add the dried polyether ether ketone, polyphenylene sulfone, polyether sulfone and additives into a high-speed mixer and mix ...

Embodiment 2

[0053] Surgical Scissors: Recipe:

[0054]

[0055] The coupling agent is silane coupling agent A-1120, the high-temperature lubricant is polyorganosiloxane, and the antioxidant is N,N'-bis-[3-(3,5-di-tert-butyl-4- Hydroxyphenyl) propionyl] hexamethylenediamine (antioxidant 1098) and tris [2.4-di-tert-butylphenyl] phosphite (antioxidant 168), the mass ratio of the two is 1:1. Preparation:

[0056] (1) Carbon fiber is first oxidized with nitric acid, the specific steps are as follows:

[0057] Dip the carbon fiber in concentrated nitric acid for 20 minutes to remove impurities on the surface of the fiber and increase the surface roughness, then wash it with deionized water until neutral, and dry it in a vacuum oven at 120°C for 1 hour.

[0058] (2) adding the treated carbon fiber and coupling agent into a high mixer and mixing to obtain modified carbon fiber;

[0059] (3) Dry polyether ether ketone, polyphenylene sulfone and polyether sulfone at 180°C for 1 hour respectiv...

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Abstract

The invention discloses engineering plastics, a preparation method and application for preparing a surgical operating instrument. The engineering plastics is prepared from, by weight, 30-75% of polyether-ether-ketone, 20-70% of reinforced fiber, not larger than 5% of polyphenylene sulfone, not larger than 5% of polyether sulfone, 0.5-2% of a coupling agent and 0.1-3% of an additive. The engineering plastics can be used for preparing the surgical operating instrument. The engineering plastics has the advantages that the obtained surgical operating instrument is good in corrosion resistance, high in dimensional stability, excellent in dyeability, and capable of performing sterilization in various conventional sterilization modes including high-temperature and high-pressure steam, ethylene oxide, low-temperature plasma, gamma rays and the like; the surgical operating instrument can be prepared through an injection molding method, rapid production can be achieved, the processing cost is low, the good anticoagulant activity is achieved when the surgical operating instrument makes contact with blood, the ISO 10993 certification is met, no rejection is produced when the surgical operating instrument marks contact with human tissue organs for a short or middle period of time in a surgery, and the enough chemical stability and physiological inertia are achieved.

Description

technical field [0001] The invention relates to engineering plastics, in particular to engineering plastics for preparing surgical instruments. Background technique [0002] Traditional surgical instruments are made of stainless steel and other metal materials, which have limitations such as cumbersome processing, high cost, long cycle time, and low dimensional stability. [0003] The patent of high-temperature polyamide molding material reinforced with flat glass fibers (publication number CN101372555A) discloses an engineering plastic used for preparing surgical instruments, which uses polyamide as the main component. [0004] However, since surgical instruments usually need to be sterilized for multiple cycles at high temperature, so as to be used multiple times, polyamide cannot meet the requirements for dimensional stability of surgical instruments, and can only be used as a disposable product at present. [0005] Therefore, seeking a new engineering plastic to replace...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/06A61L31/02
CPCA61L31/06A61L31/026C08L61/16C08L81/06
Inventor 彭学凡
Owner SHANGHAI XUEFENG PRECISION MACHINERY CO LTD
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