CN214679592U - Needleless medicine adding connector and remaining needle - Google Patents

Abstract

The utility model provides a needleless dosing connector and an indwelling needle, which belong to the field of medical consumables, the needleless dosing connector comprises a shell and a glue valve arranged in the shell, the bottom of the glue valve is upwards concave and provided with a cavity, the top of the cavity is downwards provided with a conical bulge, and the conical bulge and the glue valve are integrally formed; the top end of the rubber valve radially extends to form an upper limit part so as to prevent the rubber valve from being brought into the shell when the needle tube is inserted, and the bottom end of the rubber valve radially extends to form a lower limit part so as to prevent the rubber valve from being brought out when the needle tube is pulled out. The utility model discloses the concave cavity of establishing in gluey valve bottom to it is protruding to set up the tapered arch downwards at the top of cavity, so that the inside duckbilled design that is of gluey valve can effectively prevent exit end liquid medicine reflux.

Description

Needleless medicine adding connector and remaining needle

Technical Field

The utility model belongs to the field of medical consumables, concretely relates to needleless adds medicine joint, in addition, the utility model discloses still relate to one kind and include the needle that keeps somewhere of above-mentioned needleless medicine joint that adds.

Background

Currently, in clinical medicine, it is generally necessary to perform blood transfusion and infusion treatment by intravenous injection, and it is sometimes necessary to repeatedly perform puncture for many times for the treatment reason, thereby causing unnecessary pain to a patient. In order to solve the above problems, when a patient needs to perform infusion many times, an indwelling needle is generally used, and the use of the indwelling needle can reduce the pain of the patient due to repeated venipuncture.

The indwelling needle generally consists of a catheter indwelling in a blood vessel, a puncture guiding pillow core, an extension tube and a needleless dosing connector, wherein the needleless dosing connector is arranged at the end part of the extension tube, when dosing is carried out, a needle tube of an injector is inserted into the dosing connector, the needle tube extrudes a sealing element in the dosing connector, the sealing element deforms, and liquid medicine is input from a gap between the sealing element and a shell.

In the process of implementing the invention, the inventor finds that the existing needleless drug adding joint has at least the following defects:

after the liquid medicine is injected, the liquid medicine at the outlet end of the existing medicine adding connector has a reflux phenomenon, so that more medicine residues are left in the medicine adding connector.

SUMMERY OF THE UTILITY MODEL

Based on the above background problem, the present invention aims to provide a needleless medicine adding connector, which can effectively prevent the liquid medicine from flowing back at the outlet end, and another object of the present invention is to provide a remaining needle comprising the above needleless medicine adding connector.

In order to achieve the above object, on the one hand, the embodiment of the present invention provides a technical solution:

needleless adds medicine and connects, include the casing and establish glue valve in the casing, the bottom of gluing valve is the upwards concave cavity that is equipped with, the top of cavity is equipped with the toper arch downwards, the toper arch with glue valve integrated into one piece.

In one embodiment, the top end of the glue valve extends radially with an upper stop to prevent the glue valve from being carried into the housing when the needle cannula is inserted.

Preferably, the bottom end of the rubber valve extends with a lower limit part along the radial direction to prevent the rubber valve from being taken out when the needle tube is pulled out.

In one embodiment, the top end of the rubber valve is further provided with a concave part for guiding, and the concave part is further downwards provided with a notch for inserting the needle tube.

In one embodiment, the shell is a split structure and comprises an upper shell and a lower shell, and the upper shell and the lower shell are clamped or screwed.

Preferably, the rubber valve is arranged in the upper shell, an annular protrusion is arranged on the inner wall of the upper shell, and an annular clamping groove matched with the annular protrusion is formed in the outer wall of the rubber valve.

In one embodiment, the lower shell is divided into an upper cavity part and a lower cavity part by a horizontally arranged partition plate, and the bottom end of the rubber valve abuts against the bottom end of the upper cavity part.

Preferably, a nozzle is axially arranged in the lower cavity part, the top end of the nozzle penetrates through the partition plate and extends into the cavity of the rubber valve, and the bottom end of the nozzle extends out of the lower cavity part.

In one embodiment, the inner wall of the lower cavity part is also provided with internal threads.

On the other hand, the embodiment of the utility model also provides an indwelling needle, including foretell needleless medicine adding connect.

Compared with the prior art, the utility model discloses following effect has:

1. the utility model discloses a glue valve bottom is upwards concave and is equipped with the cavity, and the top of cavity is equipped with the coniform arch downwards to make the inside duckbilled design that is of glue valve, can effectively prevent exit end liquid medicine reflux.

2. The utility model discloses a rubber valve top has upper limit portion along radially extending, and the bottom has lower limit portion along radially extending, and upper limit portion butt is on the top of last casing, goes up the limit portion and will glue the valve when can preventing that the needle tubing from inserting and bring into in the casing, and the bottom butt of going up the casing is in lower limit portion, and consequently lower limit portion can prevent to glue the valve and take out the casing when the needle tubing extracts.

3. The utility model discloses a glue valve top still is equipped with the depressed part, when the needle tubing inserts, can play the effect of direction, and the depressed part has dustproof antifouling effect with the incision cooperation.

4. The utility model discloses an internal chamber portion and lower chamber portion of separating into through the baffle of inferior valve, be equipped with the mouth piece along the axial in the chamber portion of inferior valve, the top of mouth piece is passed in the baffle stretches into the cavity of gluey valve, connects the mouth to stretch into in the gluey valve, can effectively reduce the loss of liquid medicine.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic view of the external structure of a needleless drug adding connector in embodiment 1 of the present invention;

fig. 2 is a front sectional view of a needleless drug administration structure in embodiment 1 of the present invention;

fig. 3 is a schematic view of an external structure of a glue valve in embodiment 1 of the present invention;

fig. 4 is a front sectional view of the needle-free medicine adding structure according to embodiment 1 of the present invention when the needle is inserted into the needle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings of the specification, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Example 1

The present embodiment provides a needleless drug adding connector, as shown in fig. 1, comprising a housing and a glue valve 3 disposed in the housing.

Specifically, as shown in fig. 1 and 2, the housing is a split structure and is clamped and fixed by the upper housing 1 and the lower housing 2, the connection mode of the upper housing 1 and the lower housing 2 is not limited thereto, and in another embodiment, the upper housing 1 and the lower housing 2 may be screwed.

In the present embodiment, as shown in fig. 2, the longitudinal section of the upper housing 1 is an inverted T-shaped structure, and the glue valve 3 is accommodated in the hollow cavity of the upper housing 1.

As shown in fig. 2, a cavity 301 is recessed upward at the bottom of the rubber valve 3, and a tapered protrusion 302 is disposed downward at the top of the cavity 301, in this embodiment, the tapered protrusion 302 and the rubber valve 3 are integrally formed, and the tapered protrusion 302 enables the interior of the rubber valve 3 to be in a duckbill design, so as to effectively prevent the liquid medicine from flowing back at the outlet end, which is the liquid outlet end of the nozzle 201 in this embodiment.

In order to prevent the rubber valve 3 from moving when the needle tube is inserted and pulled out, as shown in fig. 2 and 3, in the present embodiment, an upper limit portion 303 extends radially from the top end of the rubber valve 3, and a lower limit portion 304 extends radially from the bottom end of the rubber valve 3, and at this time, the longitudinal section of the rubber valve 3 is in an "i" shape. As shown in fig. 2, the upper limit portion 303 abuts against the distal end of the upper case 1, and when the needle tube is forcibly inserted, the rubber valve 3 is prevented from being pressed into the upper case 1; the lower end of the upper housing 1 abuts against the lower stopper 304, so that the rubber valve 3 is prevented from being taken out of the upper housing 1 when the needle tube is forcibly pulled out.

In order to further prevent the glue valve 3 from shifting, as shown in fig. 2 and 3, an annular protrusion 101 is further disposed on the inner wall of the upper housing 1, the annular protrusion 101 and the upper housing 1 are integrally formed, an annular groove 305 matched with the annular protrusion 101 is disposed on the outer wall of the glue valve 3, and when the glue valve 3 is located in the upper housing 1, the annular protrusion 101 is just clamped in the annular groove 305, so that the glue valve 3 can be prevented from shifting up and down under the action of external force.

In this embodiment, as shown in fig. 2, a concave portion 306 is further disposed at the center of the top end of the glue valve 3, and when the needle tube is inserted, the concave portion 306 can guide; the recessed portion 306 is further provided with a downward notch for inserting the needle tube, and the recessed portion 306 and the notch are matched to have a dustproof and antifouling effect.

In this embodiment, as shown in fig. 2, the lower case 2 is divided into an upper chamber portion 2-1 and a lower chamber portion 2-2 by a horizontally disposed partition plate, the partition plate is integrally formed with the lower case 2, and a bottom end of the glue valve 3, i.e., a lower stopper portion 304 abuts against a bottom end of the upper chamber portion 2-1.

The inner side of the lower cavity part 2-2 is axially provided with a nozzle 201, the nozzle 201 and the lower shell 2 are integrally formed, the top end of the nozzle 201 penetrates through the partition plate and extends into the cavity 301 of the rubber valve 3, the bottom end of the nozzle 201 extends out of the lower cavity part 2-2 to form an outlet end, and the nozzle 201 extends into the rubber valve 3, so that the loss of liquid medicine can be effectively reduced. The inner wall of the lower cavity part 2-2 is also provided with internal threads for connecting other liquid guide assemblies.

In the assembly of the present embodiment, the glue valve 3 may be first placed at the upper cavity 2-1 of the lower casing 2, and then the upper casing 1 is covered, so that the upper casing 1 and the lower casing 2 are clamped and fixed, thereby the glue valve 3 is limited in the upper casing 1; when in use, as shown in fig. 4, the needle tube 100 is inserted through the cut on the rubber valve 3, and the bottom end of the needle tube 100 is abutted against the top end of the nozzle 201, i.e. the needle tube 100 is in seamless butt joint with the needleless drug adding connector, thereby further reducing the loss of the input liquid medicine.

Example 2

An indwelling needle comprises a catheter, a puncture guide needle core, an extension tube and the needleless drug adding connector of the embodiment 1, wherein the catheter and the puncture guide needle core are arranged at one end of the extension tube, and the needleless drug adding connector is arranged at the other end of the extension tube. It should be noted that the catheter, the puncture guiding needle core and the extension tube are all existing products, and the structure thereof is not described in detail in this embodiment.

It should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. The needleless dosing connector comprises a shell and a glue valve arranged in the shell and is characterized in that,

the bottom of the rubber valve is upwards concavely provided with a cavity, the top of the cavity is downwards provided with a conical protrusion, and the conical protrusion and the rubber valve are integrally formed.

2. The needleless drug delivery adaptor of claim 1, wherein the top end of the glue valve extends radially to form an upper stop to prevent the glue valve from being carried into the housing when the needle cannula is inserted.

3. The needleless drug delivery adaptor of claim 2, wherein the bottom end of the gel valve extends radially with a lower stop to prevent the gel valve from being carried out when the needle cannula is withdrawn.

4. The needleless medicine adding joint according to claim 1, wherein the top end of the rubber valve is further provided with a concave part for guiding, and the concave part is further provided with a downward notch for inserting the needle tube.

5. The needleless drug adding connector of claim 1, wherein the housing is a split structure and comprises an upper housing and a lower housing, and the upper housing and the lower housing are clamped or screwed.

6. The needleless medicine adding connector according to claim 5, wherein the glue valve is arranged in the upper shell, an annular protrusion is arranged on the inner wall of the upper shell, and an annular clamping groove matched with the annular protrusion is arranged on the outer wall of the glue valve.

7. The needleless drug adding joint according to claim 5, wherein the lower housing is divided into an upper chamber part and a lower chamber part by a horizontally arranged partition plate, and the bottom end of the glue valve abuts against the bottom end of the upper chamber part.

8. The needleless drug adding connector according to claim 7, wherein a nozzle is axially arranged in the lower cavity part, the top end of the nozzle penetrates through the partition plate and extends into the cavity of the rubber valve, and the bottom end of the nozzle extends out of the lower cavity part.

9. The needleless drug delivery adaptor of claim 8, wherein the inner wall of the lower chamber portion is further provided with internal threads.

10. An indwelling needle comprising a needleless drug delivery adaptor according to any one of claims 1 to 9.

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