A kind of preparation method of covered implant

An implant and coating technology, which is applied in the field of medical devices, can solve the problems of increasing the inner and outer diameter of the coated implant, the feeling of foreign body in the human body, and low coating strength, so as to ensure the coating effect, the thickness of the coating is small, Soft film effect
CN111821065BActive Publication Date: 2021-11-16北京爱霖医疗科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
北京爱霖医疗科技有限公司
Publication Date
2021-11-16

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Abstract

The invention discloses a preparation method of a film-coated implant, which comprises the following steps: wrapping an inner layer film on a support mold; setting an implant on the support mold wrapped with an inner layer film; Wrap the outer film on the implant to form the implant component; set the heat shrinkable tube on the implant component; use an external heating device to heat the heat shrinkable tube and the implant component, and the heat shrinkable tube is heated Internally extruded implant components, the polyethylene layer in the implant components begins to melt and be extruded after being heated to 120°C, so that the inner and outer coatings can be condensed and extruded by the heat-shrinkable tube and the effect of the external heating device The lower bonding and pressing are integrated to cover the implant; after the implant component and the heat-shrinkable tube are cooled, the heat-shrinkable tube and the supporting mold are removed to obtain a covered implant. The film-covered implant obtained by the preparation method of the present invention has better biocompatibility, basically has no bioreactivity after being implanted in the human body, and eliminates the foreign body sensation and exclusion reaction of the human body to the greatest extent.
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Description

technical field

[0001] The invention relates to the field of medical devices, in particular to a method for preparing a membrane-covered implant. Background technique

[0002] The film-covered implant generally includes a metal frame and inner and outer films respectively covering the inner and outer surfaces of the metal frame. In the film-covered implants currently on the market, some of the inner and outer layers of the film are fixed on the frame by suturing, and some are fixed on the frame by thermocompression, and the pure thermocompression of suture and simple The physical coating method has great disadvantages. The inner and outer coatings not only greatly increase the overall inner and outer diameter of the implant, but also have low coating strength and are easy to fall off, resulting in the risk of exposing the metal frame. The human body produces a foreign body sensation and exclusivity. Contents of the invention

[0003] Aiming at the problems existing in th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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