CN106110447A - A kind of new medical painless syringe syringe needle - Google Patents

Abstract

The invention discloses a novel medical painless syringe needle. The surface of the tube wall of the syringe needle described in the invention is provided with an irregular surface. A plurality of pits are evenly distributed on the surface of the tube wall of the zigzag type, and multiple groups of sawtooth segments are uniformly arranged on the surface of the zigzagging tube wall, and the corrugated tube wall is that the entire needle tube is corrugated. Compared with the prior art, the present invention is developed through the mosquito bionic technology. Compared with the smooth surface of the injection needle, the improved syringe has a smaller contact area with the skin tissue, which reduces the stimulation of the nerves and makes the injection painful. Greatly reduced, thereby improving the convenience of its use. The key issue is how to make the needles into a jagged micron structure to reduce friction on the skin while reusing resources as much as possible. It has the value of promotion and application.

Description

A new type of medical painless syringe needle

technical field

The invention relates to a medical syringe, in particular to a novel medical painless syringe needle.

Background technique

Subcutaneous injection is a relatively common medical method at present, which uses a syringe to puncture the skin of the human body to directly inject the drug into the body. In the medical injection process, the pain caused by the needle piercing the human body is related to the sensory organs in the human skin. Human skin is composed of three parts: epidermis, dermis and subcutaneous tissue. Pain receptors are located in the epidermis. When the medullary nerve fibers enter the epidermis, they lose the nerve membrane and branch into reticular or small balls, scattered in the intercellular space of the epidermis. Pain points exist and are densely distributed, so the epidermis is particularly sensitive to pain. Receptors depend on four factors: intensity of stimulation, rate of change, time of action, and area of action. Among the four factors that determine pain during injection, the rate of change and action time have nothing to do with the needle of the syringe. The area of action depends on the type of needle, so the intensity of stimulation is The only modifiable factor in the sensation of injection pain.

Judging from the current market, there is not yet a product with excellent pain relief effect, mature processing technology, reasonable price, and can completely replace ordinary syringes in terms of clinical effects of drugs.

On the other hand, from the perspective of bionics, the mouthparts of mosquitoes are jagged. Compared with the smooth side of the injection needle, the jagged mouthparts have a smaller contact area with skin tissue, which reduces nerve stimulation. So the pain is greatly reduced. After the mosquito's mouthparts penetrate the skin, the saliva secreted contains anticoagulant substances, allowing it to suck blood as much as possible. In fact, mosquitoes can complete the bite without the human body feeling at all.

Based on the above situation, the present invention intends to develop a medical injection needle that imitates the mouthparts of mosquitoes. This needle will not make people feel pain when pierced into the skin, and is very suitable for developing new medical syringes.

Contents of the invention

The object of the present invention is to provide a novel medical painless syringe needle in order to solve the above problems.

The present invention achieves the above object through the following technical solutions:

The surface of the tube wall of the syringe needle of the present invention is provided with an irregular surface, and the irregular surface is specifically a pit type, a zigzag type, and a corrugated type, and a plurality of pits are evenly distributed on the tube wall surface of the pit type, so that The sawtooth-shaped tube wall surface is uniformly provided with multiple groups of sawtooth segments, and the corrugated tube wall is corrugated for the entire needle tube.

Specifically, 25-30 pits are evenly distributed on the pit-shaped pipe wall. In the corrugated pipe wall, the depth of the corrugations is 0.05 mm, the distance between two corrugations is 0.75 mm, and the width of the corrugations is 0.1 mm. In the sawtooth-shaped pipe wall, the depth of the sawtooth is 0.05 mm, the distance between two sawtooth is 0.75 mm, and the width of the sawtooth is 0.1 mm.

The beneficial effects of the present invention are:

The invention is a new type of medical painless syringe needle. Compared with the prior art, the invention is developed through mosquito bionic technology. Compared with the smooth one-sided surface of the injection needle, the contact area between the improved syringe and the skin tissue is smaller, reducing It greatly reduces the pain caused by injection and improves the convenience of its use. The key issue is how to make the needles into a jagged micron structure to reduce friction on the skin while reusing resources as much as possible. It has the value of promotion and application.

Description of drawings

Fig. 1 is the sectional view of the needle tube structure of dimple type of the present invention;

Fig. 2 is a cross-sectional view of the sawtooth needle tube structure of the present invention;

Fig. 3 is a sectional view of the corrugated needle tube structure of the present invention.

In the figure: 1-pipe wall, 2-pit type, 3-serrated type, 4-corrugated type.

detailed description

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figures 1 to 3: the surface of the tube wall 1 of the syringe needle of the present invention is provided with an irregular surface, and the irregular surface is specifically a pit type 2, a zigzag type 3 and a corrugated type 4, and the pits A plurality of pits are uniformly distributed on the surface of the tube wall of the zigzag type, multiple groups of sawtooth sections are evenly arranged on the surface of the zigzag tube wall, and the corrugated tube wall is corrugated for the entire needle tube.

Specifically, 25-30 pits are evenly distributed on the pit-shaped pipe wall. In the corrugated pipe wall, the depth of the corrugations is 0.05 mm, the distance between two corrugations is 0.75 mm, and the width of the corrugations is 0.1 mm. In the sawtooth-shaped pipe wall, the depth of the sawtooth is 0.05 mm, the distance between two sawtooth is 0.75 mm, and the width of the sawtooth is 0.1 mm.

The zigzag structure of the mosquito stylet is a barbed structure. Because of its flexibility, the direction of insertion and extraction can be changed, while the injection needle is a rigid structure, and the non-smooth structure on it cannot be changed. , therefore, in order to make the experimental results more comprehensive, the experimental analysis of the needle resistance and the needle withdrawal resistance should be carried out,

The present invention mainly analyzes and studies factors affecting biological drag reduction, such as biological surface lubrication drag reduction, electrical drag reduction, surface hydrophobic drag reduction, surface non-smooth drag reduction technology, surface flexible drag reduction technology, and mosquitoes and cicada anatomical characteristics , the basic structure of the caliber and the extraction of the structural characteristics of the caliber. The structural feature of the mosquito mouthparts is that the upper lip, a pair of upper jaws, a pair of lower jaws and tongue are specially formed in the labial groove on the back of the beak. stylet. The upper inner lip, tongue, upper jaw and lower jaw are combined to form the piercing organs, and the lower lip is only to protect these piercing organs. The front end of the upper jaw is thin and smooth, and the end is wider like a knife. There are 25 to 30 thin serrations on the inner side, which are the first tools used to cut the skin when sucking blood. Based on this principle, from the perspective of bionics, the needle is designed by imitating the non-smooth shape and structural characteristics of mosquitoes, cicadas and other insect piercing and sucking mouthparts. According to the caliber characteristics of mosquitoes and cicadas, three tube shapes were made, namely pit shape, corrugated shape and zigzag shape, and an orthogonal test was done. The injection needle with corrugated bionic structure has the best drag reduction rate. When the depth is 0.05mm, the spacing is 0.75mm, and the width is 0.1mm, the drag reduction rate is 44.5%. We finally adopted the corrugated bionic structure to study the obvious drag reduction effect. The reason is that there is a gap when the bionic shape makes the needle wall contact with the skin tissue cells, which reduces the contact area and reduces the frictional resistance.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. A novel medical painless syringe needle, characterized in that: the tube wall surface of the syringe needle is provided with an irregular surface, and the irregular surface is specifically a pit type, a zigzag type and a corrugated type, and the pit A plurality of pits are uniformly distributed on the surface of the tube wall of the zigzag type, multiple groups of sawtooth sections are evenly arranged on the surface of the zigzag tube wall, and the corrugated tube wall is corrugated for the entire needle tube. 2. The novel medical painless syringe needle according to claim 1, characterized in that 25-30 pits are evenly distributed on the pit-shaped tube wall. 3. The novel medical painless syringe needle according to claim 1, characterized in that: the corrugated tube wall, wherein the depth of the corrugations is 0.05 mm, the distance between two corrugations is 0.75 mm, and the width of the corrugations is 0.05 mm. 0.1mm. 4. The novel medical painless syringe needle according to claim 1, characterized in that: the serrated tube wall, wherein the depth of the serrations is 0.05 mm, the distance between the two serrations is 0.75 mm, and the width of the serrations is 0.05 mm. 0.1mm.