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Preparation method for coatings of medical supplies and products thereof

A technology of medical supplies and coatings, applied in coatings, metal material coating processes, gaseous chemical plating, etc., can solve problems such as failure of disinfection and sterilization, difficulty in cleaning, uneven coating thickness, etc., and achieve a tight and firm combination , wide temperature range, good coating effect

Inactive Publication Date: 2013-06-05
英作纳米科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface coatings of medical products prepared by existing methods either cannot withstand frequent cleaning and are prone to peeling off; , it is difficult to clean and disinfect; or the working temperature range is narrow, and there are special requirements for the materials of medical supplies to be treated
Especially for medical supplies with very narrow gaps, pores and pipes, not only is it difficult to clean, easy to hide dirt, but also difficult for disinfection and sterilization factors to penetrate, often resulting in failure of disinfection and sterilization. At present, various methods have reached less than good effect

Method used

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  • Preparation method for coatings of medical supplies and products thereof
  • Preparation method for coatings of medical supplies and products thereof
  • Preparation method for coatings of medical supplies and products thereof

Examples

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preparation example Construction

[0072] Such as figure 1 As shown, a method for preparing a coating of a medical product of the present invention includes: step S10: placing the medical product in a reaction chamber, and performing vacuum treatment on the reaction chamber; step S20: mixing at least two precursors Alternate pulses are pressed into the reaction chamber in turn, and the pressed precursor is reacted and adsorbed on the surface or inner wall of the medical product, and the excess precursor and reaction by-products are removed; step S30: repeat the step S20 , until a coating of required thickness is deposited on the surface or inner wall of the medical product.

[0073] Further, after placing the medical supplies in the reaction chamber, the step S10 may further include: adjusting the temperature of the reaction chamber to 5°C-1000°C. In this way, the uniformity of concentration and temperature in the entire reaction chamber is ensured, and the deposition process is optimized.

[0074] Further, a...

Embodiment 1

[0096] Such as figure 2 and image 3 As shown, the stainless steel bare drug slow-release stent 10 is coated with the active drug paclitaxel 11 and placed in the reaction chamber, and the vacuum degree of the reaction chamber is 9×10 -2 Torr, the reaction chamber temperature is 5°C.

[0097] Firstly, pulse the trimethylaluminum (TMA) precursor for 0.005 s, pump the air for 0.1 s; then pulse H 2 O precursor 0.2s, pumping for 100s; alternating pulses 150 times in sequence to obtain Al 2 o 3 The coating 21 has a thickness of about 15 nm.

[0098] Then, pulse tetrakis(ethylmethylamino)titanium (TEMAT) precursor for 0.05s, and pump for 100s; then pulse H 2 O precursor 0.2s, pumping for 100s; alternately pulsed 6 times in sequence to obtain TiO 2 The coating 22 has a thickness of about 0.5 nm. The TiO 2 The coating 22 is relatively thin, and is a discontinuous coating, which is evenly distributed in the shape of islands on the Al 2 o 3 The surface of the coating 21.

[0...

Embodiment 2

[0102] Such as Figure 4 As shown, the titanium dental implant 30 is placed in the reaction cavity, and the vacuum degree of the reaction cavity is 1×10 -4 Torr, the reaction chamber temperature is 350°C.

[0103] Pulsed TiCl 4 Precursor for 10s, pumping for 50s; then pulse NH 3 Plasma for 50 s, air pumping for 450 s; alternately pulsed 1000 times in turn to obtain a new type of medical product with a TiN coating 31 (its thickness is about 42 nm)—a new type of titanium bone implant.

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Abstract

The invention discloses a preparation method for coatings of medical supplies. The preparation method includes a first step of placing the medical supplies into a reaction cavity, and carrying out vacuum treatment on the reaction cavity, a second step of pressing at least two types of precursors into the reaction cavity in sequence in a pulse alternating mode, enabling the pressed precursors to carry out reaction and absorption on the surfaces or the inner walls of the medical supplies, sucking out the redundant precursors and reaction accessory substances, and a third step of repeating the second step until that coatings with needed thickness are deposited on the surfaces or the inner walls of the medical supplies. The invention further discloses the novel medical supplies manufactured through the preparation method. The preparation method can be used for preparing the coatings which are even in thickness, good in biocompatibility, antimicrobial, antiallergic, corrosion resisting, non-toxic, insulated or conductive, fully coated or partially coated, and smooth on the surfaces or the inner walls of any kinds of medical supplies.

Description

technical field [0001] The invention relates to a method for preparing a coating of a medical product and a product thereof. Background technique [0002] At present, medical supplies including implants, interventional consumables, medical devices, filter membranes, medical electronic instruments and medical fabrics have been widely used in clinical treatment. However, the development of my country's medical supplies is relatively backward, especially most high-performance medical supplies need to rely on imports. [0003] The surface coating preparation methods of domestic medical supplies mainly include: spraying method, vapor deposition method, electroplating method, surface carburizing and nitriding treatment, impregnated organic coating, organic casing coating, etc. The coating of medical supplies is prepared by spraying, vapor deposition, etc., which has poor coating performance and uneven film thickness. For the surface of medical supplies with special-shaped curved ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/00C23C16/455A61L27/28
Inventor 王东君郭敏
Owner 英作纳米科技(北京)有限公司
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