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Support device for supporting lumen medical instruments and spraying system

A technology for a medical device and a supporting device, which is applied in the field of supporting devices and spraying systems, can solve the problems of low preparation efficiency, stent covering, and large contact area between the stent and the cylindrical mandrel.

Inactive Publication Date: 2020-02-07
BIOTYX MEDICAL SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production efficiency of this method is low
In addition, in this method, the contact area between the stent and the cylindrical mandrel is too large, resulting in the coating of the stent and even the peeling off of the coating after spraying.

Method used

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  • Support device for supporting lumen medical instruments and spraying system
  • Support device for supporting lumen medical instruments and spraying system
  • Support device for supporting lumen medical instruments and spraying system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A spray system is used to spray the coronary stent to prepare a coating on the outer surface of the coronary stent. In the support device of the spraying system for supporting the lumen medical device, each baffle is provided with a PTFE film as an adsorption film, and the PTFE film is tightly attached to the baffle by an extrusion method. The number of baffles is 4, and the angle between two adjacent baffles is 90°. The diameter of the circumscribed circle of the baffle 22 is 1.45 mm, and the length of the baffle is 15 mm.

[0056] The inner diameter of the coronary stent to be sprayed is 1.45 mm (the state during spraying, that is, the unexpanded state), and the length is 15 mm.

[0057] Use the above-mentioned spraying system to spray the outer wall of 40 coronary stents of the above specifications. After spraying, use the coronary stent auxiliary inspection system to inspect the appearance, thickness and uniformity of the coating. 39 qualified, with a pass rate of 97.5%...

Embodiment 2

[0059] A spray system is used to spray the coronary stent to prepare a coating on the outer surface of the coronary stent. In the support device of the spraying system for supporting the lumen medical device, each baffle is provided with a PTFE film as an adsorption film, and the PTFE film is tightly attached to the baffle by an extrusion method. The number of baffles is 4, and the angle between two adjacent baffles is 90°. The diameter of the circumscribed circle of the baffle 22 is 1.45 mm, and the length of the baffle is 33 mm.

[0060] The inner diameter of the coronary stent to be sprayed is 1.45 mm (the state during spraying, that is, the unexpanded state), and the length is 33 mm.

[0061] Use the above-mentioned spraying system to spray the outer surface of 40 coronary stents of the above specifications. After spraying, use the coronary stent auxiliary inspection system to inspect the appearance, thickness and uniformity of the coating. 40 qualified and 100 qualified %.

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Abstract

The invention relates to a support device for supporting lumen medical instruments. The support device for supporting the lumen medical instruments includes a shielding structure, the shielding structure includes a plurality of baffles, the plurality of baffles are arranged in a radical mode, and the diameters of the circumscribed circles of the baffles are equal to the inner diameters of the lumen medical instruments. When the support device for supporting the lumen medical instruments is used for supporting a stent and spraying coating, the stent is sleeved on the shielding structure, the outer side surface of each baffle abuts against the inner wall of the stent, the contact area of the stent and the support device for supporting the lumen medical instruments is greatly reduced, and thesituation of film or even coating peeling off is avoided advantageously; and moreover, the plurality of baffles can effectively shield dripping spray liquid, and thus the drug content on the inner wall of the stent can be decreased.

Description

Technical field [0001] The present invention relates to the field of medical equipment, in particular to a supporting device and a spraying system for supporting luminal medical equipment. Background technique [0002] Coronary artery stent placement has become the preferred method of interventional treatment of coronary heart disease. From the early simple balloon expansion and bare metal stent development to drug-eluting stents, interventional treatment of coronary heart disease continues to make progress. [0003] Drug-eluting stents are usually provided with a drug coating on the surface of the stent, and the drug release of the drug coating directly and concentratedly acts on the damaged blood vessel to prevent thrombosis in a timely and effective manner. [0004] At present, most of the drug coatings of drug-eluting stents on the market exist on the outer wall, sidewall and inner wall of the stent at the same time. The drug coating that works in the human body is only on the si...

Claims

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Application Information

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IPC IPC(8): B05B13/02B05B12/26
CPCB05B13/0235B05B12/26
Inventor 曹瀚文
Owner BIOTYX MEDICAL SHENZHEN CO LTD
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