WO2022117123A1

WO2022117123A1 - Precise injection pump-style hydra needle

Info

Publication number: WO2022117123A1
Application number: PCT/CN2022/072311
Authority: WO
Inventors: 袁广
Original assignee: 广州凡帝电子科技有限公司
Priority date: 2020-12-02
Filing date: 2022-01-17
Publication date: 2022-06-09
Also published as: CN214596694U

Abstract

A precise injection pump-style hydra needle, relating to the field of hydra needles. The hydra needle comprises a tube body (1) detachably connected to a glass vial. A sliding connection groove (5) and a threaded connection groove (4) that are in communication and sequentially decrease in inner diameter are provided in the tube body (1) along the direction of connection with the glass vial, one end of the threaded connection groove (4) being connected with the glass vial, and a large baffle (3) being arranged on the other end, the large baffle (3) being clamped to a stepped platform between the threaded connection groove (4) and the sliding connection groove (5). A through hole (6) is provided in the end of the sliding connection groove (5) and a sliding connection plate (8) is slidably connected therein, the diameter of the top of the through hole (6) being smaller than the sliding connection plate (8), and the diameter of the interior of the sliding connection groove (5) being larger than the sliding connection plate (8). A needle cover mounting groove (9) is provided in the sliding connection plate (8), and a needle assembly is provided inside the needle cover mounting groove (9) and a needle cover assembly is inserted in same. The invention solves the problems that liquid output in traditional hydra needles is uneven, that a spring is in contact with the liquid, impacting the effect of the liquid because of chemical reaction, and that the whole device is difficult to clean.

Description

A precise introduction of the pump-type water-soluble needle

technical field

The invention relates to the related field of water-soluble needles, in particular to a pump-type water-soluble needle with precise introduction.

Background technique

The current water-soluble needles on the market consist of a needle, a needle cover, a guide rod, a needle seat, a baffle, and a glass bottle body; the needle is fixed on the needle seat, the needle cover passes through the needle, and is fixed to the needle seat with screws to guide the flow of water. The spring of the rod is compressed between the telescopic rod and the baffle, the guide rod passes through the needle cover, the spring, and the needle seat, which is connected and fixed with the baffle, and the connecting needle seat and the glass bottle body are detachably connected. During use, since the guide rod is higher than the needle passing through the needle cover, the skin first contacts the guide rod, the guide rod drives the baffle back, and the liquid components in the glass bottle body follow the pores between the telescopic rod and the needle seat of the needle cover. Outflow, at the same time, the needle penetrates into the skin to achieve the purpose of introduction. This structural design has the following deficiencies and defects:

1. Because the liquid component can only flow out along the gap between the telescopic rod and the needle base of the needle cover, which leads to the problem of uneven liquid discharge or even no liquid.

2. The liquid can only come out through the gap around the guide rod. When each needle pierces the skin, no liquid is introduced along the way, and the liquid will always surround the guide rod and the spring, resulting in the chemical formation between the spring and the liquid. The reaction thus contaminates the action of the liquid and is difficult to clean.

The force with which the needle penetrates the skin cannot be controlled.

technical solutions

The purpose of the present invention is to provide a pump-type water-soluble needle with precise introduction, so as to solve the problems raised in the above-mentioned background art.

To achieve the above object, the present invention provides the following technical solutions:

A pump-type water-soluble needle for precise introduction, comprising a pipe body detachably connected to a glass bottle; the pipe body is provided with a sliding connection groove and a threaded connection whose inner diameter decreases in turn and communicates with each other along the direction of connection with the glass bottle. One end of the threaded connection groove is connected with the glass bottle, and the other end is provided with a large baffle, the large baffle is clamped with the step between the threaded connection groove and the sliding connection groove, and the end of the sliding connection groove is A through hole is opened and a sliding connection plate is slidably connected in it. The diameter of the top of the through hole is smaller than that of the sliding connection plate, and the inner diameter of the sliding connection groove is larger than that of the sliding connection plate. A needle cover assembly is arranged inside the cover installation groove and a needle cover assembly is inserted therein. The needle cover assembly is arranged on the periphery of the needle cover assembly and is spaced apart from the sliding connecting plate. The sliding connecting plate is also inserted with a hollow structure. The guide rod is inserted in the large baffle and is slidably connected with the large baffle, and the end of the guide rod is installed in the guide rod installation groove of the small baffle, and two symmetrically open on it. A U-shaped hole, the height of the U-shaped hole is less than the thickness of the large baffle, the outer periphery of the guide rod is also sleeved with springs at both ends connected to the large baffle and the sliding connecting plate, when the small baffle is When there is a gap between the plate and the large baffle, the threaded connection groove communicates with the interval between the sliding connection plate and the needle cover assembly.

As a further solution of the present invention: the puncture needle assembly includes a needle body and a needle head, the needle bodies are mounted on the sliding connecting plate and are provided with a plurality of them and are equally spaced along the circumferential direction of the sliding connecting plate. Both ends of the needle body are provided with needle heads.

As a further solution of the present invention: the needle cover assembly includes a needle cover plate and a needle cover installation plate, one end of the needle cover installation plate is inserted into the needle cover installation groove, and the other end is connected with the needle cover plate, the needle cover The plate is slidably connected to the inner wall of the sliding connection groove, the needle cover plate and the sliding connection plate are arranged at intervals, and the interval is an overflow hole, and the needle cover plate and the needle cover mounting plate are each provided with a plurality of positions corresponding to the needle body There is a gap between the through hole and the needle body.

As a further solution of the present invention, four limit posts are symmetrically arranged on both sides of the sliding connection plate close to the threaded connection groove, and there are gaps between the four limit posts and the large baffle, and all of them are connected to the sliding connection groove. Inner wall sliding connection.

As a further solution of the present invention, the outer wall of the sliding connection groove can also be detachably sleeved with a needle cap.

beneficial effect

Compared with the prior art, the beneficial effects of the present invention are:

1. The threaded connection groove is communicated with the overflow gap spaced between the sliding connection plate and the needle cover plate through the two ends of the guide rod set as a hollow structure, and the overflow gap communicates with the gap between the needle cover plate and each needle , restricting the liquid to only pass through the guide rod without contacting the spring, and penetrate into the skin along the needle to achieve the purpose of precise introduction, and because the liquid will flow out through the gap between each needle body and the needle cover, so that each needle hole exits liquid to achieve efficient and uniform liquid discharge. Since the liquid does not touch the spring, there is no problem of liquid accumulation and contamination, and since the gap between the needle cover and the needle is the same as the entire guide rod, it is very easy to clean. Compared with traditional water-soluble needles, it solves the problem that the liquid in traditional water-soluble needles can only be discharged through the gap around the telescopic rod, and when each needle body pierces the skin, no liquid is introduced along the way, resulting in sometimes liquid discharge. No, the liquid is not uniform, and the liquid will always surround the telescopic rod and the spring, resulting in a chemical reaction between the spring and the liquid, which affects the function of the liquid and is difficult to clean as a whole.

By setting the distance between the end of the limit column and the large baffle, combined with the action of the spring force, and due to the existence of the limit column, when the maximum displacement is reached, the needle body can all penetrate into the skin, and the needle can be aligned. The adjustment of the force of the body piercing the skin improves the safety during operation. Due to the existence of the above design, the force when the needle body pierces or pulls out of the skin is relatively slow and gentle, which can reduce the user's pain experience during the operation; It solves the problem that the traditional water-soluble needle can not control the force of penetrating the skin, resulting in uneven depth of the needle penetrating the skin and strong pain, and only relying on the experience of the operator to work.

Description of drawings

FIG. 1 is a schematic diagram of the structure in the unfolded state of the present invention.

FIG. 2 is a schematic diagram of the combined state structure of the present invention.

FIG. 3 is a schematic diagram of the position structure of the overflow hole formed between the sliding connecting plate and the needle cover plate in the present invention.

Figure 4 is a front view of the present invention.

Note on reference numerals: small baffle 1, guide rod installation slot 2, large baffle 3, screw connection slot 4, sliding connection slot 5, through hole 6, U-shaped hole 7, sliding connection plate 8, needle cover installation slot 9. Needle body 10 , needle cover plate 11 , needle cover mounting plate 12 , needle head 13 , limit post 14 , spring 15 , tube body 16 , guide rod 17 , overflow hole 18 , needle cap 19 .

Embodiments of the present invention

The following embodiments will describe the present invention in detail with reference to the accompanying drawings. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in practical applications, the shape, thickness or height of each component can be enlarged or reduced. The embodiments listed in the present invention are only used to illustrate the present invention, but not to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention.

Example 1

Please refer to FIGS. 1 to 4. In this embodiment, a pump-type water-soluble needle for precise introduction includes a tube body 16 that is detachably connected to a glass bottle; The inner diameter decreases in turn and the sliding connection groove 5 and the threaded connection groove 4 are connected with each other. One end of the threaded connection groove 4 is connected with the glass bottle, and the other end is provided with a large baffle 3, and the large baffle 3 is connected with the threaded connection. The step between the slot 4 and the sliding connection slot 5 is clamped. The end of the sliding connection slot 5 is provided with a through hole 6 and a sliding connection plate 8 is slidably connected in it. The diameter of the top of the through hole 6 is smaller than that of the sliding connection plate 8 , the inner diameter of the sliding connection groove 5 is larger than that of the sliding connection plate 8, thereby restricting the sliding connection plate (8) to only slide inside the sliding connection groove (5) and the through hole (6). Needle cover installation groove 9, the needle cover installation groove 9 is provided with a puncture needle assembly inside and a needle cover assembly is inserted therein, the needle cover assembly is arranged on the periphery of the puncture needle assembly and is spaced from the sliding connection plate 8, the A guide rod 17 with a hollow structure is also inserted in the sliding connection plate 8. The guide rod 17 is inserted in the large baffle 3 and is slidably connected with the large baffle 3. The end of the guide rod 17 is installed on the large baffle 3. Two U-shaped holes 7 are symmetrically opened in and on the guide rod installation groove 2 of the small baffle 1. The height of the U-shaped holes 7 is smaller than the thickness of the large baffle 3. The periphery of the guide rod 17 is also There are springs 15 which are respectively connected with the large baffle 3 and the sliding connecting plate 8 at both ends. When there is a gap between the small baffle 1 and the large baffle 3, the threaded connection groove 4 is connected to the sliding connecting plate 8 and the needle. The space between the cover assemblies communicates. Therefore, the liquid in the glass bottle enters the guide rod (17) through the U-shaped hole (7), flows into the gap between the sliding connection plate (8) and the needle cover plate (11), and flows along the needle body (10) to the needle head (13). , which is introduced into the skin.

In this embodiment, the lancet assembly includes a needle body 10 and a needle head 13. The needle bodies 10 are mounted on the sliding connecting plate 8 and are provided in multiples and are equally spaced along the circumferential direction of the sliding connecting plate 8, The ends of several needle bodies 10 are provided with needle heads 13 .

In this embodiment, the needle cover assembly includes a needle cover plate 11 and a needle cover mounting plate 12. One end of the needle cover mounting plate 12 is inserted into the needle cover mounting groove 9, and the other end is connected to the needle cover plate 11. The needle cover plate 11 is slidably connected to the inner wall of the sliding connection groove 5 , the needle cover plate 11 and the sliding connection plate 8 are arranged at intervals and the space is an overflow hole 18 , the needle cover plate 11 and the needle cover installation plate 12 are on the There are a plurality of through holes corresponding to the needle body 10 , and there is a gap between the through holes and the needle body 10 .

Working principle: When the needle 13 contacts the skin, it pushes and pushes the treatment head (sliding connection plate 8, needle cover 11 and needle body 10) as an integral part, and will drive the guide rod 17 to move in the direction of the threaded connection groove 4 and compress at the same time The spring 15, the end of the guide rod 17 drives the small baffle 1 away from the large baffle 3, and through the principle of pumping water, the liquid flows into the guide rod 17 through the U-shaped hole 7, and then flows to the guide rod 17 with the guide rod 17. At the overflow hole 19 spaced between the sliding connecting plate 8 and the needle cover mounting plate 12, due to the resistance caused by the compression of the spring 15, the needle body 10 is driven to move towards the skin, and the needle body 10 is pushed into the skin slowly. When the limit post 14 reaches the maximum displacement, the part of the needle body 10 that leaks out of the needle cover mounting plate 12 completely penetrates into the skin, and then the liquid flows out along the gap between the needle body 10 and the through hole of the needle cover mounting plate 12, and flows along with it. The needle body 10 flows into the skin.

When the external force makes the needle leave the skin, due to the elastic force of the spring 15, the guide rod 17 will drive the small baffle 1 to move closer to the large baffle 3, and the small baffle 1 will squeeze the surrounding liquid through the U-shaped The hole 7 enters the guide rod 17, and then prepares for the next liquid discharge. When the final elastic force is the smallest, the U-shaped hole 7 returns to the large baffle 3, and the small baffle 1 completes the sealing. At the same time, due to the elastic force of the spring 15, the needle body 10 pierced into the skin can be automatically pulled away relatively slowly from the skin under the action of the elastic force without applying external force.

To sum up, the two ends of the guide rod 17 set as a hollow structure respectively connect the large baffle plate 3 fixed by the threaded connection groove 4 with the overflow hole 18 spaced between the sliding connection plate 8 and the needle cover plate 11, thereby solving the problem of solving the problem. The liquid in the traditional water-soluble needle can only flow out through the gap around the guide rod 17, and when each needle body 10 pierces the skin, no liquid is introduced along, and the liquid will always surround the guide rod 17 and The spring 15 will cause a chemical reaction between the spring 15 and the liquid, thereby affecting the function of the liquid, and the whole is difficult to clean.

Example 2

Please refer to FIGS. 1-2. In this embodiment, four limiting posts 14 are symmetrically arranged on both sides of the sliding connecting plate 8 close to the threaded connection groove 4. The four limiting posts 14 are connected to the large baffle. There are gaps between 3 and they are all slidably connected to the inner wall of the sliding connection groove 5 .

When the limit post 14 moves toward the large baffle 3 and reaches the maximum displacement, the limit post 14 contacts the large baffle 3. At this time, the displacement of the needle body 10 in the sliding connection groove 5 also reaches the maximum, and then through the spring 15 The resistance action drives the needle body 10 and the needle head 13 to slowly penetrate the skin. When the displacement is the largest, the needle body 10 completely penetrates into the skin. By setting the distance between the end of the limit post 14 and the large baffle 3, the needle alignment The perception of the depth of insertion of the body 10 into the skin solves the problem that the traditional water-soluble needles cannot control the penetration force into the skin, resulting in uneven penetration of the needles into the skin, and only relying on the experience of the operator to work.

Example 3

Referring to FIGS. 1-2 , in this embodiment, a needle cap 19 can be detachably sleeved on the outer wall of the sliding connection groove 5 .

When it needs to be stored, the needle cap 19 is covered to protect the needle 13 and improve the overall sealing performance.

The standard parts used in the present invention can be purchased from the market, the special-shaped parts can be customized according to the description in the description and the drawings, and the specific connection methods of each part are fixed by the mature medical UV shadowless glue in the prior art Conventional means, tools and equipment required in the assembling process are conventional models in the prior art, which will not be described in detail here.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

A pump-type water-soluble needle for precise introduction, comprising a tube body (16) detachably connected to a glass bottle; it is characterized in that the tube body (16) is provided with an inner diameter that decreases sequentially along the direction of connection with the glass bottle and The sliding connection groove (5) and the threaded connection groove (4) communicate with each other, one end of the threaded connection groove (4) is connected with the glass bottle, and the other end is provided with a large baffle (3), the large baffle ( 3) It is clamped with the step between the threaded connection groove (4) and the sliding connection groove (5). The end of the sliding connection groove (5) is provided with a through hole (6) and a sliding connection plate is slidably connected in it. (8), the diameter of the top of the through hole (6) is smaller than that of the sliding connecting plate (8), the inner diameter of the sliding connecting groove (5) is larger than that of the sliding connecting plate (8), and the sliding connecting plate (8) is provided with a needle cover for installation A groove (9), the needle cover installation groove (9) is provided with a puncture needle assembly inside and a needle cover assembly is inserted therein, the needle cover assembly is arranged on the periphery of the puncture needle assembly and is spaced from the sliding connecting plate (8) , a guide rod (17) with a hollow structure is also inserted in the sliding connecting plate (8), and the guide rod (17) is inserted in the large baffle (3) and is connected with the large baffle (3). ) sliding connection, the end of the guide rod (17) is installed in the guide rod installation groove (2) of the small baffle (1) and two U-shaped holes (7) are symmetrically opened on it. The height of the hole (7) is less than the thickness of the large baffle plate (3), and the periphery of the guide rod (17) is also sleeved with two ends respectively connected with the large baffle plate) (3) and the sliding connecting plate (8). A spring (15), when there is a gap between the small baffle (1) and the large baffle (3), the threaded connection groove (4) communicates with the interval between the sliding connection plate (8) and the needle cover assembly .
A pump-type water-soluble needle for precise introduction according to claim 1, characterized in that the lancet assembly comprises a needle body (10) and a needle head (13), and the needle body (10) is mounted on a sliding connection plate ( 8) A plurality of the needle bodies (10) are provided with needle heads (13) at the ends and are equally spaced along the circumferential direction of the sliding connecting plate (8).
A pump-type water-soluble needle for precise introduction according to claim 1, wherein the needle cover assembly comprises a needle cover plate (11) and a needle cover mounting plate (12), and the needle cover mounting plate (12) ) one end is inserted into the needle cover installation groove (9), the other end is connected with the needle cover plate (11), the needle cover plate (11) is slidably connected with the inner wall of the sliding connection groove (5), and the needle cover plate ( 11) It is spaced from the sliding connecting plate (8) and the space is an overflow hole (18). The needle cover plate (11) and the needle cover mounting plate (12) are provided with a plurality of positions and the needle body (10). ) corresponding through holes, and there is a gap between the through holes and the needle body (10).
A pump-type water-soluble needle for precise introduction according to any one of claims 2-3, characterized in that, the sliding connecting plate (8) is further symmetrically provided with four limiting Positioning posts (14), there are gaps between the four limiting posts (14) and the large baffle plate (3), and they are all slidably connected with the inner wall of the sliding connection groove (5).
A pump-type water-soluble needle for precise introduction according to any one of claims 2-3, characterized in that, a needle cap (19) can be detachably sleeved on the outer wall of the sliding connection groove (5).