CN217366752U

CN217366752U - Needle-prick-proof and damage-free needle

Info

Publication number: CN217366752U
Application number: CN202121233920.XU
Authority: CN
Inventors: 聂长宁; 陈希明; 钱丰
Original assignee: Suzhou Linhwa Medical Devices Co ltd
Current assignee: Suzhou Linhwa Medical Devices Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2022-09-06
Anticipated expiration: 2031-06-03

Abstract

The utility model discloses a needle-prick prevention nondestructive needle, at least, including base, the butterfly wing, the needle tubing is linked together with the butterfly wing and is worn out from the pinhole of base bottom, the butterfly wing can communicate the pipe, the bottom surface of base has a spout of indent, sliding fit is equipped with a horizontally shifting needle-prick prevention shell fragment in the spout, needle-prick prevention shell fragment includes expansion end, elastic part and the stiff end that connects gradually, the stiff end is with the base rigid coupling, elastic part has certain shrinkage all the time and makes it keep elasticity, and through its elasticity drive expansion end to the translation of needle tubing along the spout, under the first state, the needle tubing passes the pinhole, expansion end and needle tubing butt; in the second state, the movable end is abutted against the inner wall of the chute and blocks the needle hole so as to seal the needle tip of the needle tube in the base. The utility model discloses the setting prevents that the acupuncture shell fragment comes to block the needle tubing after the use, avoids the needle tubing to wear out once more, provides the guarantee for safety in utilization, prevents that acupuncture shell fragment simple structure, and the high and low in manufacturing cost of stability in use.

Description

Needle-prick-proof and damage-free needle

Technical Field

The utility model relates to the technical field of medical equipment, specifically relate to a prevent acupuncture not damaged needle.

Background

The atraumatic needle is a special needle for drug administration and infusion used in cooperation with an implanted central venous infusion port, after drug administration is finished, a medical worker needs to pull out the atraumatic needle, the medical worker needs to fix a base of the infusion port with one hand and pull out the atraumatic needle with the other hand in the traditional needle pulling process, and a needle tube of the atraumatic needle can generate certain recoil instantly after being separated from the infusion port, so that the injury to the medical worker can be possibly caused, and the normal work of the atraumatic needle is influenced. And when the atraumatic needle is pulled out, partial liquid medicine and body fluid are easy to take out, secondary infection is caused, and potential safety hazards are caused.

Various needle-prick preventing atraumatic needle structures are also available in the market, such as those disclosed in U.S. patents U S9149574, U S8574197, U S8728029, chinese patent CN208319646U, etc., which are either very complicated, or add a plurality of additional parts, or change the traditional structure of atraumatic needles, increase the difficulty of manufacturing and using, and increase the manufacturing cost, thus being not well accepted by the market.

Therefore, a non-invasive needle with a simple anti-needle-prick structure is a problem which is urgently needed to be solved at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects existing in the prior art and providing a needle-prick prevention non-damage needle.

The purpose of the utility model is realized through the following technical scheme:

the needle-prick-preventing atraumatic needle at least comprises a base, a butterfly wing and a needle tube, wherein the needle tube is communicated with the butterfly wing and penetrates out of a needle hole at the bottom of the base, the butterfly wing can be communicated with a catheter, a concave sliding groove is formed in the bottom surface of the base, a horizontally moving needle-prick-preventing elastic sheet is embedded in the sliding groove in a sliding mode, the needle-prick-preventing elastic sheet comprises a movable end, an elastic part and a fixed end which are sequentially connected, the fixed end is fixedly connected with the base, the elastic part always has a certain shrinkage amount to enable the elastic part to keep elasticity, the elastic part drives the movable end to horizontally move towards the needle tube along the sliding groove through the elasticity of the elastic part, and the needle tube penetrates through the needle hole in a first state, and the movable end is abutted to the needle tube; under the second state, the movable end with the inner wall butt of spout blocks up the pinhole, with the needle point of needle tubing seals in the base.

Preferably, the movable end is connected with the elastic part through an engagement surface, the engagement surface is an upward convex plane, and a gap is formed between the bottom surface of the engagement surface and the bottom surface of the sliding groove.

Preferably, the movable end is formed by folding two layers of sheet bodies, and the thickness of the movable end is equivalent to the depth of the groove of the sliding groove.

Preferably, the elastic part is composed of a first inclined plane, an arc-shaped plane and a second inclined plane which are sequentially connected, and an inverted V-shaped bending upwards is formed.

Preferably, the top center of the elastic part is provided with a through hole.

Preferably, the fixing end is bent upwards and formed into a hook shape.

Preferably, a clamping groove is formed in the base, and the fixed end is clamped in the clamping groove.

The beneficial effects of the utility model are mainly embodied in that:

1. the needle puncture preventing elastic sheet is arranged to seal the used needle tube, so that the needle tube is prevented from penetrating out again, the use safety is guaranteed, the needle puncture preventing elastic sheet has elasticity, other power mechanisms are not needed for driving the needle puncture preventing elastic sheet to move, the internal structure of the base is greatly simplified, the manufacturing cost is reduced, and the phenomenon that the overall weight of the damage-free needle is excessively increased is avoided;

2. the movable end of the anti-needling elastic sheet is formed by folding two layers of sheet bodies, so that the strength of the anti-needling elastic sheet is increased, the thickness of the anti-needling elastic sheet is equivalent to the depth of the chute, the contact area between the movable end and the chute is increased, and the stability and the reliability of the abutting of the movable end and the chute can be further guaranteed;

3. the top of the elastic part is an arc-shaped surface, so that the pressure resistance and the strength of the top of the elastic part are improved, the elastic part can bear large-degree deformation to keep large elasticity, the elastic part is not easy to break, and the use reliability is improved;

4. the top of the anti-needling elastic sheet is provided with a through hole, so that the elastic part can be further conveniently bent to have higher elasticity;

5. the connecting surface is an upward bent convex plane and is not contacted with the bottom surface of the sliding chute, so that the friction force applied to the connecting surface is reduced, and the forward translation fluency of the connecting surface is improved;

6. the arrangement of the sliding chute can play a certain guiding role on the anti-needling elastic sheet, and the sliding stability of the anti-needling elastic sheet is improved;

7. the fixed end of the anti-needling elastic sheet forms a hook part bent up and down, so that the strength of the fixed end is increased, and the effective connection between the fixed end and the base is improved.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

FIG. 1: the explosion schematic diagram of the embodiment of the utility model;

FIG. 2 is a schematic diagram: the embodiment of the utility model provides a sectional view;

FIG. 3: the embodiment of the utility model provides an in prevent the schematic diagram of acupuncture shell fragment.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the scope of the present invention.

In the description of the schemes, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, the direction close to the operator is a proximal end, and the direction far away from the operator is a distal end.

As shown in figures 1 to 3, the utility model discloses a needle with no damage and puncture resistance, which at least comprises a base 1, a butterfly wing 2 and a needle tube 3, the needle tube 3 is communicated with the butterfly wing 2 and penetrates out of a needle hole 101 at the bottom of the base 1, the butterfly wing 2 can be communicated with a conduit 6, the bottom surface of the base 1 is provided with a concave sliding chute 102, a horizontally moving anti-acupuncture elastic sheet 4 is embedded in the sliding groove 102 in a sliding way, the anti-acupuncture elastic sheet 4 comprises a movable end 401, an elastic part 402 and a fixed end 403 which are connected in sequence, the fixed end 403 is fixedly connected with the base 1, the elastic part 402 has a certain shrinkage to keep elasticity, and drives the movable end 401 to translate along the slide slot 102 towards the needle tube 3 by its elasticity, and in the first state, the needle tube 3 penetrates through the needle hole 101, and the movable end 401 is abutted to the needle tube 3; in the second state, the movable end 401 abuts against the inner wall of the base 1 and blocks the needle hole 101, so as to seal the needle tip of the needle tube 3 in the base 1.

Specifically, as shown in fig. 3, in the preferred embodiment, the movable end 401 is formed by folding two layers of sheets, such a structure can improve the strength of the movable end 401, and make it abut against the sliding groove 102 so as to be difficult to deform by extrusion; the thickness of the movable end 401 is made to be equal to the groove depth of the slide groove 102, so that the contact area between the movable end 401 and the slide groove 102 is increased, and the stability of the movable end 401 abutting against the slide groove 102 is improved. The folding of the two sheets simplifies the manufacturing process, and in other possible embodiments, the anti-needle-prick resilient sheet 4 may also be integrally formed with a movable end 401 having a thickness greater than the thickness of the sheet itself.

In a preferred embodiment, the movable end 401 is connected to the elastic portion 402 by an engaging surface 404, the engaging surface 404 is a convex plane protruding upward, and a bottom surface of the engaging surface 404 is spaced from a bottom surface of the sliding slot 102. With such a structure, the direct contact area between the anti-needle-prick elastic sheet 4 and the sliding groove 102 can be reduced, so that the friction force applied to the bottom surface of the anti-needle-prick elastic sheet 4 during movement is reduced, and the movement smoothness of the anti-needle-prick elastic sheet is improved.

In a preferred embodiment, a sleeve film 5 is arranged in the base 1, and the sleeve film 5 is sleeved outside the needle tube 3, fixedly connected with the front end of the butterfly wing 2, and synchronously moves along with the butterfly wing 2 to ensure real-time sealing of the needle tube 3, so as to prevent the needle tube 3 from leaking after being pulled out.

In order to improve the blockade property of the needle-prick prevention elastic sheet 4 to the bottom of the needle tube 3, the thickness of the movable end 401 is not higher than the horizontal height of the joint surface 404, so that the second state can be ensured, after the movable end 401 is abutted to the sliding groove 102, the joint surface 404 is abutted to the needle point of the needle tube 3 and the bottom opening of the sleeve film 5, and the sleeve film 5 and the bottom of the needle tube 3 are sealed. In other possible embodiments, the sleeve film 5 may not be arranged in the base 1.

Further, the elastic portion 402 is formed by a first inclined surface 4021, an arc surface 4022 and a second inclined surface 4023 which are connected in sequence, and is formed into an inverted V shape which is bent upward. The arc-shaped surface 4022 increases the pressure resistance and strength of the top of the spring, so that the spring can bear large-degree deformation and keep large elasticity, is not easy to break and improves the use reliability. And the top of the elastic part 402 is provided with a through hole 204, which can further facilitate bending the elastic part 402 to make it have higher elasticity.

Preferably, the fixed end 403 is bent upward and formed in a hook shape. The hook-shaped structure is easy to form, and on the one hand, the strength of the fixing end 403 can be enhanced, and the fixing between the fixing end and the base 1 can be enhanced. In a preferred embodiment, the base 1 has a receiving cavity therein, which is capable of being engaged with the fixing end 402, in other possible embodiments, the fixing end 403 may have any other suitable shape, and the fixing end 403 may also be fixed to the base 1 by other possible fixing methods, such as bonding, welding, and the like.

The utility model discloses the setting is prevented that acupuncture shell fragment 4 comes to blockade the needle tubing 3 after using, avoids needle tubing 3 to wear out once more, provides the guarantee for the safety in utilization of not damaged needle, prevent that acupuncture shell fragment 4 self has elasticity, make it need not its removal of other power unit drive, greatly retrencied the inner structure of base 1 has reduced manufacturing cost, avoids the holistic weight of too big increase not damaged needle.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of detailed descriptions is only for the specific description of the feasible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention should be included within the scope of the present invention.

Claims

1. Prevent acupuncture not damaged needle, at least including base (1), butterfly wing (2), needle tubing (3) with the butterfly wing (2) are linked together and are followed pinhole (101) of base (1) bottom are worn out, but butterfly wing (2) intercommunication pipe (6), its characterized in that: the bottom surface of the base (1) is provided with an inwards concave sliding groove (102), a horizontally moving anti-acupuncture elastic sheet (4) is embedded in the sliding groove (102) in a sliding mode, the anti-acupuncture elastic sheet (4) comprises a movable end (401), an elastic part (402) and a fixed end (403) which are sequentially connected, the fixed end (403) is fixedly connected with the base (1), the elastic part (402) has a certain shrinkage amount all the time to enable the elastic part to keep elasticity, the elastic part drives the movable end (401) to move horizontally to the needle tube (3) along the sliding groove (102) through the elasticity of the elastic part, the needle tube (3) penetrates through the needle hole (101) in a first state, and the movable end (401) is abutted to the needle tube (3); and in the second state, the movable end (401) is abutted against the inner wall of the sliding chute (102) and blocks the needle hole (101) so as to seal the needle tip of the needle tube (3) in the base (1).

2. The needle stick prevention atraumatic needle of claim 1, wherein: the activity end (401) through linking face (404) with elasticity portion (402) are connected, link up face (404) and be the protruding plane of upwards protruding, the bottom surface of linking face (404) with form the interval between the bottom surface of spout (102).

3. The needle stick prevention atraumatic needle of claim 2, wherein: the movable end (401) is formed by folding two layers of sheet bodies, and the thickness of the movable end is equivalent to the depth of the sliding groove (102).

4. The needle stick damage prevention needle as claimed in claim 3, wherein: the elastic part (402) is composed of a first inclined plane (4021), an arc-shaped plane (4022) and a second inclined plane (4023) which are connected in sequence, and an inverted V shape which is bent upwards is formed.

5. The needle stick prevention atraumatic needle of claim 4, wherein: the top center of the elastic part (402) is provided with a through hole (4024).

6. The needle stick damage prevention needle as claimed in claim 5, wherein: the fixed end (403) is bent upwards and is in a hook shape.

7. The needle stick prevention atraumatic needle of claim 6, wherein: a clamping groove (103) is formed in the base (1), and the fixed end (403) is clamped in the clamping groove (103).