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Ultrasonic developing solution and nerve block needle prepared from same

A technology for nerve block and developing solution, applied in the field of nerve block needles, can solve the problems of high size requirements and high price, and achieve the effects of low preparation cost, enhanced effect, and weakened specular reflection phenomenon.

Pending Publication Date: 2022-03-18
珠海金导医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the particularity of the structure of nerve block needles, there are few applications of ultrasonic imaging coatings for nerve block needles.
More importantly, currently provided developing materials, such as polyurethane materials, usually use a small molecule chain extender with developing ability to realize the function of ultrasonic development, but this small molecule chain extender is easily absorbed by the human body. Subsequent cleaning is not complete, and excessive absorption by the human body can easily lead to the occurrence of diseases such as hyperthyroidism, hypothyroidism, and hypothyroidism
In addition, some ultrasonic imaging materials introduce inorganic metal particles with high acoustic impedance to realize the function of ultrasonic imaging. The inorganic particles have high requirements on size and are expensive

Method used

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  • Ultrasonic developing solution and nerve block needle prepared from same
  • Ultrasonic developing solution and nerve block needle prepared from same
  • Ultrasonic developing solution and nerve block needle prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A kind of nerve block needle, its structure is as figure 1 As shown, it includes needle base 1, needle core 5, needle body 2, needle tube 3 and ultrasonic developing coating 4; needle tube 3 is arranged on needle body 2, and the outer wall surface of needle tube 3 is coated with ultrasonic developing coating 4 (outer wall surface The length of the needle tube coated with the ultrasonic developing coating accounts for 75% of the total length of the needle tube), and the ultrasonic developing coating 4 is a polyurethane foam layer; the needle core 5 is arranged on the needle holder 1 . When in use, the needle core 5 is inserted into the needle tube 3 through the needle body 2 , and the needle body 2 is detachably arranged on the needle holder 1 .

[0051] A preparation method of a nerve block needle, comprising the following steps:

[0052] (1) Take 65 parts of diphenylmethane diisocyanate (MDI), 100 parts of polypropylene glycol, 0.5 parts of water, 1 part of silicone o...

Embodiment 2

[0057] A nerve block needle, comprising a needle seat, a needle body, a needle tube, an ultrasonic imaging coating, and a needle core, the needle body is arranged on the needle seat, the needle tube is arranged on the needle body, and the outer wall surface of the needle tube is coated with the ultrasonic imaging coating layer, the ultrasonically developed coating is a polyurethane foam layer; when in use, the needle core is inserted into the needle tube.

[0058] A preparation method of a nerve block needle, comprising the following steps:

[0059] (1) Take 65 parts of diphenylmethane diisocyanate (MDI), 100 parts of polypropylene glycol, 0.5 parts of water, 1 part of silicone oil, 3 parts of triethanolamine, 1 part of 1,1,1-trimethylolpropane, 1 part of 1,4-butanediol, and then mixed to prepare an ultrasonic developing coating solution, which was quickly poured into the spray gun tank.

[0060] (2) Gravity spray gun is adopted, the spray method is flat, the diameter of the ...

Embodiment 3

[0063] A nerve block needle, comprising a needle seat, a needle body, a needle tube, an ultrasonic imaging coating, and a needle core, the needle body is arranged on the needle seat, the needle tube is arranged on the needle body, and the outer wall surface of the needle tube is coated with the ultrasonic imaging coating layer, the ultrasonically developed coating is a polyurethane foam layer; when in use, the needle core is inserted into the needle tube.

[0064] A preparation method of a nerve block needle, comprising the following steps:

[0065] (1) Take 65 parts of diphenylmethane diisocyanate (MDI), 100 parts of polypropylene glycol, 0.5 parts of water, 1 part of silicone oil, 3 parts of triethanolamine, 1 part of 1,1,1-trimethylolpropane, 1 part of 1,4-butanediol, and then mixed to prepare an ultrasonic developing coating solution, which was poured into the high tank of the electrostatic spraying equipment.

[0066] (2) The electrostatic spraying method adopts disc-typ...

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Abstract

The invention belongs to the technical field of medical materials, and discloses an ultrasonic developing solution and a nerve block needle prepared by using the same. The ultrasonic developing solution contains a polyurethane foaming polymer, and raw materials for preparing the polyurethane foaming polymer comprise isocyanate, polyol, a foaming agent, a catalyst and a cross-linking agent. The surface of the outer wall of the nerve block needle is coated with an ultrasonic developing coating prepared from an ultrasonic developing solution. The polyurethane foam material is applied to ultrasonic development, especially to a nerve block needle, and a plurality of solid-gas surfaces formed by bubbles in the polyurethane foam material are utilized to enhance the diffuse reflection phenomenon of ultrasonic waves and weaken the specular reflection phenomenon, so that received echo signals are increased, and the ultrasonic development effect is enhanced; meanwhile, the polyurethane foam coating is low in preparation cost, high in chemical stability and good in blood compatibility, and small molecular substances harmful to the human body cannot be generated.

Description

technical field [0001] The invention belongs to the technical field of medical materials, and in particular relates to an ultrasonic developing solution and a nerve blocking needle prepared by using the same. Background technique [0002] In the field of nerve block, the puncture of the nerve block needle usually adopts a blind puncture method, mainly relying on hand feeling to determine the position of the nerve block needle in the body. However, in the face of obesity, trauma, or differences in individual anatomical structures, there is a possibility that the anatomical structure is not clear and the patient's compliance is not high; this leads to inaccurate nerve positioning, and anesthesia drugs cannot be injected to the ideal site, resulting in nerve block effects worse. In this case, even if the dose of anesthetic drugs is increased to achieve a good block effect, common local anesthesia complications such as adverse reactions caused by anesthetic drugs or accidental ...

Claims

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Application Information

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IPC IPC(8): A61K49/22A61L31/10A61L31/14A61B17/34
CPCA61K49/22A61K49/223A61L31/10A61L31/14A61B17/3401A61B17/3403A61B2017/3413A61L2420/02C08L75/04
Inventor 时勇马聪浩林伟林
Owner 珠海金导医疗科技有限公司