阅读说明：本技术 一种针头硅化装置 (Needle silicification device ) 是由 刘吉元 刘晓龙 江大伟 田东晋 梁文正 于 2021-09-09 设计创作，主要内容包括：本发明为一种针头硅化装置,包括封堵吹气装置、封堵机构、挤压管机构、辅助定位机构和用于将针头压入或拉出硅油盒的弯管机构；通过弯管机构将针头泡入硅油盒以硅化针头表面；并利用封堵机构和挤压管机构使软管内产生负压,使硅油进入针头内部,以控制针头内壁的硅化程度。相较于仅表面硅化的针头,既使得针头的内壁更锋利,降低了穿刺阻力,减轻患者的疼痛感；又能保证内壁硅化的针头深度超过刺入皮肤的针头长度,避免内壁硅化的尾端毛刺对皮肤产生穿刺阻力,加重患者的疼痛感。这是发明人通过深入研究所发现的问题,是现有技术所完全没有考虑过的,一举突破了现有技术的壁垒,具有较大的价值。(The invention relates to a needle silicification device, which comprises a plugging blowing device, a plugging mechanism, an extrusion pipe mechanism, an auxiliary positioning mechanism and a pipe bending mechanism for pressing or pulling a needle into or out of a silicone oil box; soaking the needle head into a silicon oil box through a pipe bending mechanism to silicify the surface of the needle head; and the plugging mechanism and the pipe extruding mechanism are utilized to generate negative pressure in the hose, so that the silicone oil enters the needle head to control the siliconizing degree of the inner wall of the needle head. Compared with the needle head only with the siliconized surface, the inner wall of the needle head is sharper, the puncture resistance is reduced, and the pain of a patient is relieved; and the depth of the needle head with siliconized inner wall can be ensured to exceed the length of the needle head penetrating into the skin, so that the skin is prevented from being punctured by burrs at the siliconized tail end of the inner wall, and the pain of a patient is aggravated. The problem discovered by the inventor through intensive research is completely not considered by the prior art, breaks through the barrier of the prior art at all, and has great value.)

1. A needle silicification device is characterized by comprising

The plugging and blowing device (9) is used for being hermetically connected with the first end of the hose (3);

the silicone oil suction device is connected with the hose (3), and silicone oil is sucked into the needle head (1) by changing the pressure intensity in the hose (3);

an auxiliary positioning mechanism (6) for fixing the second end of the hose (3);

the pipe bending mechanism (5) is used for pressing the needle head (3) into or pulling the needle head out of the silicone oil box (2);

a frame (4).

2. Needle siliconizing device according to claim 1, characterized in that the silicone oil suction device is a negative pressure device.

3. Siliconizing device for needles according to claim 2, characterized in that said negative pressure means comprise a plugging means (8) and a pressing tube means (7); the plugging mechanism (8) is clamped on the hose (3); the pipe pressing mechanism (7) can move on the hose (3) between the blocking mechanism (8) and the auxiliary positioning mechanism (6).

4. Siliconizing device for needles according to claim 3, characterized in that the blocking means (8) or/and the pressing tube means (7) are connected to the hose (3) by means of a clip (10) which can be tightened or loosened.

5. Siliconizing device for needles according to claim 1, characterized in that the elbow mechanism (5) is arranged above the silicone oil cartridge (2) to control the movement of the needle (1) or needle assembly.

6. Needle siliconizing device according to claim 1, characterized by further comprising a hose (3) having a first end hermetically connected to the occlusion blowing device (9) and a second end for detachable connection to a needle assembly of the needle (1).

7. Siliconizing device for needles according to claim 1, characterized in that the silicone oil cartridge (2) is provided with a shield.

Technical Field

The invention relates to the field of medical equipment manufacturing, in particular to a needle silicification device.

Background

The statements in this section merely provide background information related to the present disclosure and may constitute prior art. In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art.

When a drug is injected or a blood transfusion is performed, the drug needs to be injected into a venous blood vessel of a human body through a medical needle. Therefore, the medical needle needs to break the skin of the human body to penetrate into the blood vessel, and the process has a pricking feeling. According to the research of 'observation of puncture effect of needle tip inclined plane on left vein straight puncture' the pain intensity during venipuncture is considered to depend on the stimulation intensity, speed, time and action area. To alleviate the pain caused by puncturing, the stimulation intensity is reduced and the stimulation time is shortened, namely the area of mechanical injury of the skin is reduced and the stimulation time of the needle tip bevel in the skin is shortened. And the puncture resistance of the needle head penetrating into the skin is reduced, so that the method is a feasible method for relieving the puncture pain of the patient in comparison with the conventional method.

At present, the common method for reducing the puncture resistance is to perform silicification treatment on the needle, i.e. coating the surface of the needle with a mixed solution containing silicone oil to form a uniform silicone oil film on the surface of the needle, so as to improve the sharpness of the needle point and reduce the puncture resistance, thereby shortening the stimulation time of the needle point in the skin and reducing the pain. In the prior art, a siliconizing technique for a needle head is known as "a siliconizing device and siliconizing process for the surface of a needle tube of a medical needle" in the patent application No. CN103934149B, or "a siliconizing device for a single head of the surface of a needle tube of a medical needle" in the patent application No. CN206122070U, and a siliconizing protective film is formed on the surface of the needle head by inserting the needle head into a silicone oil box. The silicone oil can not enter the inner wall of the needle tube sometimes due to liquid tension. Even if a part of silicone oil naturally enters, for the part of silicone oil, the prior art utilizes a plugging blowing device to blow out the silicone oil in the needle tube in the follow-up process. That is, the sharpness of the surface of the needle point is only improved, the inner wall of the needle point does not have the same sharpness, the puncture resistance cannot be reduced by the inner wall of the needle head, and the puncture resistance of the needle head penetrating into the skin of a human body cannot be reduced to the optimal state.

Disclosure of Invention

In view of the above problems, it is an object of the present invention to solve some of the problems of the prior art, or at least to alleviate them.

A needle silicification device comprises

The plugging and blowing device is used for being hermetically connected with the first end of the hose;

the silicone oil suction device is connected with the hose and is used for sucking silicone oil into the needle head by changing the pressure intensity in the hose;

the auxiliary positioning mechanism is used for fixing the second end of the hose;

the pipe bending mechanism is used for pressing the needle head into or pulling the needle head out of the silicone oil box;

and a frame.

Optionally, the silicone oil suction device is a negative pressure device.

Further, the negative pressure device comprises a plugging mechanism and a pipe extruding mechanism; the plugging mechanism is clamped on the hose; the tube extruding mechanism can move on the hose between the plugging mechanism and the auxiliary positioning mechanism.

Further, the plugging mechanism or/and the pipe extruding mechanism are/is connected with the hose through a clamp capable of being loosened and tightened.

Optionally, the tube bending mechanism is disposed above the silicone oil box to control movement of the needle or the needle assembly.

The needle head silicification device further comprises a hose, the first end of the hose is connected with the plugging blowing device in a sealing mode, and the second end of the hose is used for being detachably connected with a needle head assembly of the needle head.

The silicone oil box is provided with a protective cover.

The invention has the following beneficial effects:

1. the silicone oil suction device is adopted, so that the depth of silicone oil entering the needle head can be accurately controlled, the silicification of the inner wall of the needle head is realized, the sharpness of the inner wall of the existing needle head is improved, the puncture resistance for penetrating into the skin is reduced, and the pain of a patient is relieved;

2. the silicone oil enters the needle head by extruding air in the hose through the extruding pipe mechanism, and the depth of the silicone oil entering the needle head can be accurately controlled only by controlling the length (degree) of the extruding hose, so that the siliconizing degree of the inner wall of the needle head is effectively controlled, and the siliconizing with different depths can be realized;

3. the hose is horizontally arranged above the silicone oil box, the needle head and the hose are pressed into the silicone oil box at a certain angle through the pipe bending mechanism and the auxiliary positioning mechanism for silicification, so that silicone oil can be prevented from entering the hose due to overlarge suction force of the silicone oil suction device, and cleanness of the hose is guaranteed;

4. the silicone oil box is provided with a shield which can prevent the silicone oil from splashing when the plugging blowing device blows out the silicone oil.

Drawings

The above-described structure of the invention can be further illustrated by the non-limiting examples given in the following figures.

FIG. 1 is a schematic diagram of the present invention.

Wherein: 1-a needle head; 2-a silicone oil box; 3-a hose; 4-a frame; 5-pipe bending mechanism; 6-auxiliary positioning mechanism; 7-a tube-extruding mechanism; 8-a plugging mechanism; 9-plugging a blowing device; 10-clamp.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, wherein the embodiments of the present invention are provided for illustrative purpose only and not for limiting the invention, and various alternatives and modifications can be made without departing from the technical spirit of the invention, according to the common technical knowledge and conventional means in the art.

As shown in FIG. 1, a needle silicification device comprises

The plugging and blowing device 9 is used for being hermetically connected with the first end of the hose 3;

the silicone oil suction device is connected with the hose 3, and silicone oil is sucked into the needle head 1 by changing the pressure intensity in the hose 3;

an auxiliary positioning mechanism 6 for fixing the second end of the hose 3;

the pipe bending mechanism 5 is used for pressing the needle head 3 into or pulling the needle head out of the silicone oil box 2;

a frame 4.

The plugging blowing device 9 is mainly used for blowing the redundant silicone oil out of the needle tube through the hose 3 after the siliconization of the needle head 1 is finished, so as to realize the cleaning treatment of the needle head. The silicone oil box 2 is provided with a shield, as shown in fig. 1, which can prevent splashing when the plugging blowing device 9 blows silicone oil.

The hose 3 can be horizontally arranged above the silicone oil box 2 and is fixed in position by an auxiliary positioning mechanism 6 and a plugging and blowing device 9, as shown in fig. 1. The pipe bending mechanism 5 is arranged above the silicone oil box 2 and controls the movement of the needle head 1 or the needle head assembly. When the needle head 1 needs to be siliconized, the needle head 1 and a hose 3 (namely, infusion and blood transfusion) connected with the needle head 1 are placed at corresponding positions, and then the needle head 1 is pressed down into the silicone oil box 2 through the pipe bending mechanism 5, so that the siliconization of the needle head 1 is realized. After the silicification is finished, the needle head 1 is pulled out of the silicone oil box 2. By adopting the above mode, when the silicone oil suction device sucks the silicone oil into the needle head 1, the needle head 1 and the hose 3 are at a larger angle due to the matching of the pipe bending mechanism 5 and the auxiliary positioning mechanism 6, as shown in fig. 1, the silicone oil is not easy to enter the hose 3 due to overlarge suction force, and the cleanness of the hose 3 is ensured.

Or the hose 3 is vertically arranged above the silicone oil box 2, and the pipe bending mechanism 5 is connected with the silicone oil box 2. The needle 1 is brought into the silicone oil capsule 2 by lifting the silicone oil capsule 2. The pipe bending mechanism 5 can also be connected with a part for fixing the position of the hose 3, and the needle 1 can enter the silicone oil box 2 by integrally lifting or lowering the hose 3 and the connecting part thereof.

The silicone oil suction device can be a negative pressure device or an air suction device.

When the silicone oil suction device is a suction device, the functions of the blocking blowing device 9 and the suction device can be integrated. The plugging blowing device 9 can firstly suck air inwards to a certain degree, so that the silicone oil smoothly enters the preset depth inside the needle head 1. And blowing air to blow the excess silicon oil out of the needle head 1, thereby completing the silicification of the inner wall of the needle head 1.

Alternatively, as shown in fig. 1, the silicone oil suction device may be a negative pressure device. The negative pressure device comprises a plugging mechanism 8 and a pipe extruding mechanism 7; the plugging mechanism 8 is clamped on the hose 3; the squeeze tube device 7 can be moved on the hose 3 between the closing device 8 and the auxiliary positioning device 6.

The plugging mechanism 8 can clamp the hose 3 through the outside to enable the pipeline of the hose 3 to form a closed pipeline. The tube squeezing mechanism 7 clamps the flexible tube 3 and moves towards the direction of the needle 1, so that part of air is discharged from the flexible tube 3 through the needle 1, and negative pressure is formed in the tube of the flexible tube 3. Then the flexible pipe 3 is released by the pressing pipe mechanism 7, under the action of the atmospheric pressure, the silicon oil in the silicon oil box 2 enters the interior of the needle head 1 due to the pressure difference, and the inner wall of the needle head 1 is siliconized. Because the moving distance of the extrusion pipe mechanism 7 for exhausting air on the hose 3 is controllable, the depth of the silicone oil entering the needle head 1 can be adjusted by controlling the degree of the extrusion pipe mechanism 7 for extruding the hose 3, and the siliconization of the inner wall of the needle head 1 can be completed by 100%.

Meanwhile, the silicone oil entering the needle head can be accurately controlled, and deep silicification with different requirements can be realized.

The plugging mechanism 8 and/or the tube squeezing mechanism 7 are/is connected with the hose 3 through a clamp 10 which can be tightened, and as shown in fig. 1, the plugging and air exhausting effects are realized through the tightness of the clamp 10.

The plugging function of the plugging mechanism 8 can also be integrated by a plugging blowing device 9. The plugging state is obtained when the air is not blown.

The hose 3 can be a transfusion tube and a blood transfusion tube matched with the needle head 1, and the hose 3 is arranged on a workpiece and detachably connected with the plugging blowing device 9. The conventional process is siliconized without a tube, and the siliconized needle 1 is reassembled to the flexible tube 3. In this process, the silicon oil film is easily volatilized. This application can place syringe needle 1 and the transfer line etc. that matches with it together and carry out the silicification on the work piece, has reduced the manufacturing time, has reduced the volatile degree after the syringe needle silicification.

Also, the needle siliconizing device further comprises a hose 3, the first end of the hose is hermetically connected with the blocking and blowing device 9, and the second end of the hose is detachably connected with the needle assembly of the needle 1. The needle 1 to be siliconized is mounted on a hose, so that the inner and outer walls of the needle 1 can be siliconized.

The inventor researches and discovers that the existing needle siliconizing device has the reason that silicone oil is blown out of the needle 1 through the blocking and blowing device 9, and the silicone oil naturally enters the inner wall of the needle 1 to siliconize the inner wall, so that the sharpness of the inner wall is improved.

First, it has been found from the prior art that almost all needle siliconizing techniques are directed to siliconizing the surface of the needle 1, while siliconizing the inner wall of the needle 1 is neglected. According to the research of the inventor on the literature, the puncture resistance of the needle head 1 when the needle head 1 penetrates into the skin can be reduced no matter the surface and the inner wall of the needle head 1 are siliconized, so that the needle head 1 can penetrate into the skin more quickly and freely, the puncture time is shortened, and the pain of a patient is relieved. The inventor believes that, as a result of conventional manual needle siliconisation, the needle 1 is simply removed by the worker just by placing it in a bubble of silicone oil, leading to a continuation of the automated needle siliconisation technique, which is also similar, except that the manual work is converted into a machine. However, as can be seen from the patents of patent application No. CN103934149B entitled "a siliconizing device and siliconizing process for the surface of medical needle tube", or the patent application No. CN206122070U entitled "a single-head siliconizing device for the surface of medical needle tube", etc., the present needle siliconizing technology only remains in the "automation" category of the traditional manual siliconizing, and even more researches are made on how to blow out the silicone oil entering the interior of the needle 1.

Secondly, the needle 1 is siliconized in silicone oil due to the bubble. The siliconizing degree of the silicone oil on the inner wall of the needle head 1 cannot be controlled due to the liquid tension of the silicone oil, the pressure of the needle tube and the like. In fact, even if the needle 1 is entirely immersed in silicone oil, the silicone oil that can enter the interior of the needle 1 is very small, less than a tenth of the total needle 1. According to the research of the inventor, the surface of the needle 1 needs to be silicided to a certain degree, rather than the tip part of the needle, because the silicided tail end is easy to generate burrs. If only the tip end portion of the needle is siliconized, when the needle 1 penetrates the skin to the siliconized trailing end, a puncture resistance is generated due to burrs thereof, thereby increasing pain of the patient. The siliconization of the natural penetration of the needle 1 is not sufficient for the depth (degree) of penetration of the needle 1 into the skin, since it is less than one tenth of the needle 1. This means that the siliconised end of the inner wall of the needle 1 also provides additional penetration resistance to the skin. The other reason that the silicone oil in the needle 1 is blown out by the blocking and blowing device 9 in the existing automatic needle siliconizing technology is to reduce the puncture resistance generated by the tail end after the inner wall is siliconized and reduce the pain of the patient. The prior art also merely found that manual needle siliconisation (i.e. a needle 1 that does not blow off internal silicone oil) caused additional pain to the patient, only known to be caused by the silicone oil inside the needle 1. But only simply carry out the 'blowing' treatment without deeply researching the problems therein.

The method comprises the following specific steps:

the product is placed on a tooling jig, one side of the product is plugged by a plugging blowing device 9, and meanwhile, a pipe bending mechanism 5 is matched with an auxiliary positioning mechanism 6 to bend a pipe so that part of the needle head 1 enters a silicone oil box to realize silicification of the outer wall of the needle head; meanwhile, the plugging mechanism 8 clamps the hose 3 to form a semi-closed pipeline, and the hose 3 is extruded by the extruding pipe mechanism 7 to partially discharge air, so that negative pressure is formed in the pipeline; finally the squeeze tube mechanism 7 releases the hose 3. Thus, the silicon oil in the silicon oil box 2 enters the needle tube due to the pressure difference between the atmospheric pressure and the pipeline, and the silicification of the interior of the needle head 1 is completed. The depth of the access needle 1 can be adjusted by adjusting the extent to which the flexible tube 3 is squeezed by the squeezing tube mechanism 7.

According to the needle siliconizing device, the siliconizing degree of the inner wall of the needle 1 is in a controllable state through the silicone oil suction device, so that the sharpness of the inner wall of the needle 1 is increased, the puncture resistance is reduced and the pain of a patient is relieved compared with the needle 1 only subjected to surface siliconizing; and the depth of the needle head 1 with the siliconized inner wall can be ensured to exceed the length of the needle head 1 penetrating into the skin, so that the skin is prevented from being punctured by burrs at the tail end of the siliconized inner wall, and the pain of a patient is aggravated. The problem discovered by the inventor through intensive research is completely not considered by the prior art, breaks through the barrier of the prior art at all, and has great value.

The fixed connection which is not specified can be a connection mode such as riveting, welding, bolt connection and the like, a movable connection can be a connection mode such as hinging and the like.