CN210096541U

CN210096541U - Withdrawing needleless connector

Info

Publication number: CN210096541U
Application number: CN201920705792.0U
Authority: CN
Inventors: 杨恚; 刘伟; 彭志明; 金磊
Original assignee: Jinzhou Nord Medical Equipment Technology Co Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-02-21
Anticipated expiration: 2029-05-15

Abstract

The utility model discloses a pumpback needleless connector, which comprises a connecting base, an elastic piece and a sealing base; the elastic piece is sleeved in the sealing base, and the connecting base is connected with the sealing base in a sealing manner; an inner containing cavity is arranged between the elastic piece and the sealing base; the sealing base is also provided with a pressing piece, and the pressing piece penetrates through the side wall of the sealing base and is in clearance fit connection with the side wall of the sealing base; press the pressing member in order to press the elastic component to make the elastic component take place elastic deformation, hold the intracavity in inside and form the negative pressure, take out blood examination back through the negative pressure that forms. The utility model discloses a no adapter of pumpback has increased the blood examination function of pumpback on the basis of the original function of no adapter, uses with keeping somewhere the needle cooperation, accompanies and keeps somewhere the complete life cycle of needle, and a hand is pressed and is accomplished the blood examination of pumpback, makes things convenient for medical personnel to operate, reduces simultaneously and keeps somewhere the external port pollution risk of needle.

Description

Withdrawing needleless connector

Technical Field

The utility model relates to the field of medical equipment, more specifically say, relate to a needleless connector of pumpback.

Background

In the field of medical appliance application, a needleless connector is a common accessory of an infusion apparatus, and is often used in combination with an indwelling needle to be used as a port for injecting liquid medicine, a wash pipe and the like after puncture.

The combined instrument of the 'remaining needle + needleless connector' needs to check whether a remaining needle catheter matched with the combined instrument is unobstructed by using a blood drawing-back mode in the using process, because the needleless connector has a single function, the operation generally adopts a syringe filled with saline to connect the remaining needle, the blood drawing-back inspection is carried out through manual drawing-back, after the inspection is finished, the syringe is flushed and sealed and removed, or the syringe is flushed and then the infusion operation is carried out, but the blood drawing-back inspection needs to use disposable consumables such as a disposable syringe or a prefilled catheter flusher, the cost is high, four actions of connection, drawing-back, injection and removal are needed, the operation is complicated, short-time exposure of a port can be avoided in the remaining needle pipeline in the connection and removal processes, and the port pollution risk is increased.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a needleless connector of taking back has increased the blood examination function of taking back on the basis of the original function of needleless connector, uses with keeping somewhere the needle cooperation, accompanies the complete life cycle of keeping somewhere the needle, and the blood examination of taking back can be accomplished to a hand press, makes things convenient for medical personnel to operate, reduces the use amount of disposable consumptive material such as pre-filled formula catheter flusher, practices thrift the medical expenditure, reduces simultaneously and keeps somewhere the external port pollution risk of needle.

In order to achieve the above object, the utility model provides a following technical scheme:

a pumpback needleless connector comprises a connecting base, an elastic piece and a sealing base;

the elastic piece is sleeved in the sealing base, and the connecting base is connected with the sealing base in a sealing manner;

an inner cavity is arranged between the elastic piece and the sealing base;

the sealing base is also provided with a pressing piece, and the pressing piece penetrates through the side wall of the sealing base and is in clearance fit connection with the side wall of the sealing base;

the pressing piece is pressed to press the elastic piece, so that the elastic piece is elastically deformed, negative pressure is formed in the inner containing cavity, and blood is pumped back for examination through the formed negative pressure.

Preferably, the sealing device further comprises an elastic body, wherein the elastic body is sleeved outside the pressing piece and is in sealing connection with the pressing piece and the side wall of the sealing base.

Preferably, one end of the pressing piece penetrates through the elastic body, and the other end of the pressing piece penetrates through the side wall of the sealing base and is in clearance fit connection with the side wall of the sealing base.

Preferably, the pressing member is a pressing rod.

Preferably, the elastic member is made of rubber.

According to foretell technical scheme, can know, the utility model discloses in, a needleless connector of pumpback, be provided with inside appearance chamber between elastic component and the seal base, press the pressing member in order to press the elastic component, thereby it is sunken to make the elastic component towards the direction of keeping away from the seal base lateral wall, inside appearance chamber volume increase, form the negative pressure, can accomplish the blood examination of pumpback, this operation can accomplish the blood examination of pumpback through the needleless connector self of pumpback of this patent, a hand is pressed and is accomplished the blood examination of pumpback, and need not external source apparatus such as external syringe, and keep somewhere the pipe-line system and be in the encapsulated situation all the time, can not consequently bring the pollution, the patient uses and keeps somewhere the needle.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a needle-less connector for drawing back according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a needle-less connector for withdrawal in accordance with an embodiment of the present invention.

Wherein the reference numbers in the figures are as follows:

1-connecting base, 2-elastic piece, 3-sealing base, 4-internal cavity, 5-pressing piece and 6-elastic body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-2, fig. 1 is a schematic structural view of a needle-free connector for back suction according to an embodiment of the present invention; fig. 2 is a cross-sectional view of a needle-less connector for withdrawal in accordance with an embodiment of the present invention.

As shown in fig. 1-2, a withdrawing needleless connector comprises a connection base 1, an elastic member 2 and a sealing base 3; the connecting base 1 is communicated with an indwelling pipeline system, the elastic part 2 is sleeved in the sealing base 3, the sealing base 3 is equivalent to the external support of the elastic part 2, and the connecting base 1 is in sealing connection with the sealing base 3; an inner cavity 4 is arranged between the elastic part 2 and the sealing base 3; the indwelling pipeline system is communicated with the sealing base 3, the sealing base 3 is also provided with the pressing piece 5, the pressing piece 5 penetrates through the side wall of the sealing base 3 and is in clearance fit connection with the side wall of the sealing base 3, so that the pressing piece 5 can move axially depending on the side wall of the sealing base 3, and a disposable product does not need to be replaced; press pressing member 5 in order to press elastic component 2, can make elastic component 2 take place elastic deformation, it is sunken towards the direction of keeping away from 3 lateral walls of seal base, thereby make inside appearance chamber 4 volume increase between elastic component 2 and the seal base 3, under the condition that has certain leakproofness, inside appearance intracavity 4 will form certain negative pressure so this moment, can accomplish the blood examination of taking out, this operation only needs the needleless connector of taking out of this patent self can accomplish the blood examination of taking out, and need not external source apparatus such as external syringe, pipe-line system is in the encapsulated situation all the time, can not consequently bring the pollution, the patient uses and keeps somewhere the needle safer. It should be noted that the specific structure of the pressing member 5 is not limited, and may be a pressing shaft, a pressing rod, a bolt, a screw rod, etc., and the number of the pressing members 5 and the specific position on the sealing base 3 are not limited as long as the same technical effects can be achieved, and the elastic member 2 may be rubber or other materials as long as the same technical effects can be achieved.

The utility model discloses a concrete embodiment, still include elastomer 6, elastomer 6 cover is established outside pressing piece 5 to with

pressing piece

5 and 3 lateral wall sealing connection of seal base, elastomer 6 is worn out to pressing piece 5 one end, the other end wear to establish 3 lateral walls of seal base and with 3 lateral wall sealing connection of seal base press down, press down pressing piece 5 is in order to press down the in-process of elastomer 2, elastomer 6 takes place deformation. The pressing piece 5 and the side wall of the sealing base 3 can be in clearance fit connection.

The arrangement of the elastic body 6 further increases the sealing performance between the pressing piece 5 and the side wall of the sealing base 3, and simultaneously increases the comfort level and the operation flexibility, when the pressing piece 5 is pressed to act on the elastic piece 2, the elastic body 6 sleeved outside the pressing piece 5 generates compression deformation due to the pushing of the pressing piece 5 and the blocking of the side wall of the sealing base 3, and can gradually store a certain elastic potential energy, meanwhile, the volume of the internal cavity 4 formed between the inside of the sealing base 3 and the elastic piece 2 is gradually increased along with the extrusion of the elastic piece 2, and a certain negative pressure is generated, when the pressing piece 5 is stopped being pressed, the volume of the internal cavity 4 is not increased, the elastic potential energy of the elastic body 6 is not increased, if the pressing piece 5 is given up to apply force, namely the pressing piece 5 is loosened, the elastic potential energy of the elastic body 6 is released, under the reverse pushing of the elastic acting force, the pressing member 5 moves towards a direction away from the sidewall of the sealing base 3 to perform a resetting operation, and the elastic member 2 also returns to deform to the initial position, where it should be noted that the elastic member 6 may be rubber or other materials as long as the same technical effects can be achieved.

To sum up, the utility model discloses a needleless connector of pumpback has increased the blood examination function of pumpback on the basis that does not influence its original function, follows the whole life cycle of keeping somewhere the needle, practices thrift the relevant expense of keeping somewhere the needle nursing, and a hand is pressed and is accomplished the blood examination of pumpback, and convenient operation, the blood examination in-process of pumpback keeps somewhere the pipe-line system and is in the encapsulated situation all the time, can not consequently bring the pollution, and the patient uses to keep somewhere the needle safer.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The pumpback needleless connector is characterized by comprising a connecting base, an elastic piece and a sealing base;

an inner cavity is arranged between the elastic piece and the sealing base;

2. The needle-free retractable needle-less connector of claim 1, further comprising an elastic body, wherein the elastic body is sleeved outside the pressing piece and is connected with the pressing piece and the side wall of the sealing base in a sealing mode.

3. The needle-free retraction connector according to claim 2, wherein one end of the pressing member extends through the elastic body, and the other end of the pressing member extends through the side wall of the sealing base and is in clearance fit connection with the side wall of the sealing base.

4. The withdrawal needleless connector of claim 3, wherein the pressing member is a pressing rod.

5. The withdrawal needleless connector of claim 4, wherein the resilient member is a rubber material.