CN210020628U

CN210020628U - Needleless infusion joint

Info

Publication number: CN210020628U
Application number: CN201920503065.6U
Authority: CN
Inventors: 李超奇; 张平; 薛苗苗
Original assignee: Lily Medical Technology (wuhan) Co Ltd
Current assignee: Lily Medical Technology (wuhan) Co Ltd
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2020-02-07
Anticipated expiration: 2029-04-15

Abstract

The utility model discloses a needleless infusion joint, relating to the field of medical appliances, which comprises a joint upper cover and a joint lower cover which are connected with each other, wherein the joint upper cover and the joint lower cover are connected to form a closed shell, and a silica gel valve body is arranged inside the shell; a valve needle is arranged on the lower joint cover, a valve port is arranged on the valve needle, and the valve port is communicated with a transfusion channel at the bottom of the lower joint cover; the silica gel valve body is provided with hollow case, and the case is used for holding the needle, case and needle interference fit, and the top of silica gel valve body is provided with the liquid medicine entry, and outside transfusion system can insert from the liquid medicine entry, and the internal diameter top-down of silica gel valve body reduces earlier the back increase, is the turriform. The utility model discloses can avoid the blood backward flow, it is relatively safe, and convenient to use.

Description

Needleless infusion joint

Technical Field

The utility model relates to the field of medical equipment, concretely relates to needleless infusion connects.

Background

In recent years, during clinical transfusion, the traditional acupuncture mode is gradually replaced by needleless transfusion, so that the pain of a patient caused by acupuncture can be reduced, the venous blood vessel of the patient is protected, the medication access is maintained, the risk of infection of medical staff caused by acupuncture can be reduced, the labor intensity of the medical staff is reduced, and the treatment quality is improved.

When the needle-free infusion connector in clinical use at present is used, a liquid medicine enters a human body by matching with an indwelling needle, an infusion apparatus is inserted into an inner silicon rubber valve body from a sealing ring at the top of the infusion connector, a liquid medicine channel is opened by the infusion connector under the action of external force, when a medicine adding needle or the infusion apparatus is withdrawn after medicine adding, negative pressure is generated in the connector due to the fact that the silicon rubber valve body in the infusion connector recovers and deforms, part of liquid medicine which is just input into the human body flows back to an inner cavity of the connector along with blood of a patient, if the liquid medicine is not timely treated, embolism of an infusion pipeline can be caused, complications caused by infection easily, thrombus can be generated for the patient, the medical personnel usually use the connector of anticoagulant, meanwhile, a tube sealing liquid is injected when the infusion apparatus is to.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a needleless infusion joint which can avoid blood backflow, is relatively safe and is convenient to use.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

a needleless infusion joint comprises a joint upper cover and a joint lower cover which are connected with each other, wherein the joint upper cover and the joint lower cover are connected to form a closed shell, and a silica gel valve body is arranged inside the shell;

the joint lower cover is provided with a valve needle, the valve needle is provided with a valve port, and the valve port is communicated with a transfusion channel at the bottom of the joint lower cover;

the silica gel valve body is provided with hollow case, the case is used for holding the needle, case and needle interference fit, the top of silica gel valve body is provided with the liquid medicine entry, and outside transfusion system can insert from the liquid medicine entry, the internal diameter top-down of silica gel valve body reduces earlier the back increase, is the turriform.

Furthermore, the inner wall of silica gel valve body has a plurality of archs, the arch supports and holds the outer wall at the needle, reduces the frictional force between with the needle to the protection is sealed.

Furthermore, after the valve needle is inserted into the valve core, the protrusion is positioned above the valve port.

Further, the longitudinal section internal diameter of silica gel valve body reduces earlier the back increase, the longitudinal section of silica gel valve body is the turriform.

Further, the bottom of the silica gel valve body is provided with a connecting block, and the silica gel valve body is fixed with the joint lower cover through the connecting block.

Furthermore, the top of the silica gel valve body extends out of the joint upper cover.

Furthermore, the outer side of the joint upper cover is provided with threads.

Further, the upper portion of silica gel valve body is provided with the joint spare, the joint spare supports the inner wall of holding at the joint upper cover.

Furthermore, the joint upper cover and the joint lower cover are connected through a buckle with a guide.

Compared with the prior art, the utility model has the advantages of:

(1) the utility model provides a needleless infusion connects, connect the upper cover and connect the lower cover and connect and form inclosed casing, the inside of casing is provided with a silica gel valve body, the silica gel valve body is provided with hollow case, the case is used for holding the needle, the internal diameter top-down of valve body reduces earlier the back increase, be the turriform, when using, the transfusion system inserts the silica gel valve body and extrudees as for the valve port cooperation, the liquid medicine passes through in the valve port flows into infusion passageway, then in being carried the patient internal, finish when the infusion and remove the transfusion system, the silica gel valve body kick-backs rapidly, case parcel needle, seal the valve port, because turriform case and needle closely cooperate, make the pre-filling capacity only needle inner chamber very small part, and the deformation of silica gel valve body and case is all less in the use, can avoid appearing liquid.

Drawings

FIG. 1 is a schematic structural view of a needleless infusion connector in an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a cross-sectional view taken along a-a of fig. 1.

In the figure: 1-joint upper cover, 2-joint lower cover, 3-shell, 4-silica gel valve body, 5-valve needle, 6-valve port, 7-infusion channel, 8-valve core, 9-liquid medicine inlet, 10-bulge, 11-connecting block, 12-screw thread and 13-clamping piece.

Detailed Description

The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, the embodiment of the present invention provides a needleless infusion connector, including an upper connector cover 1 and a lower connector cover 2 connected to each other, the upper connector cover 1 and the lower connector cover 2 are connected to form a sealed housing 3, a silicone valve body 4 is disposed inside the housing 3, threads 12 are disposed outside the upper connector cover 1 for connecting with external standard connector threads, and in this embodiment, the upper connector cover 1 and the lower connector cover 2 are connected through a buckle with a guide.

The joint lower cover 2 is provided with a valve needle 5, the valve needle 5 is provided with a valve port 6, the valve port 6 is communicated with a transfusion channel 7 at the bottom of the joint lower cover 2, in the embodiment, the valve port 6 is positioned in the middle of the valve needle 5, and the valve port 6 is provided with a transfusion medicine liquid inlet.

Referring to fig. 2 and 3, the top of the silica gel valve body 4 extends to the outside of the connector upper cover 1, the top of the silica gel valve body 4 is provided with a liquid medicine inlet 9, an external infusion device can be inserted from the liquid medicine inlet 9, the silica gel valve body 4 is provided with a hollow valve core 8, the valve core 8 is used for accommodating the valve needle 5, the valve core 8 is in interference fit with the valve needle 5, the inner diameter of the silica gel valve body 4 is firstly reduced and then increased and is tower-shaped (in the embodiment of the present invention, the silica gel valve body 4 can be regarded as being formed by overlapping a plurality of circular ring structures with different inner diameters, the inner diameter of the circular ring from top to bottom is firstly reduced, then increased, then reduced and finally increased), the inner diameter of the longitudinal section of the silica gel valve body 4 is firstly reduced and then increased, the longitudinal section of the silica gel valve body 4 is tower-shaped, the size of the valve, meanwhile, after the infusion apparatus is pulled out, the silica gel valve body 4 can be rebounded rapidly to cover the valve port 6, so that external air is prevented from entering.

The utility model discloses in, the inner wall of silica gel valve body 4 has a plurality of archs 10 (the crossing part indent of two rings forms), arch 10 supports the outer wall of holding at needle 5, reduce and the frictional force between needle 5, and play sealed guard action, after needle 5 inserts case 8, arch 10 is located the top of valve port 6, silica gel valve body 4 bottom is provided with connecting block 11, silica gel valve body 4 is fixed with joint lower cover 2 through connecting block 11, the upper portion of silica gel valve body 4 is provided with joint spare 13, joint spare 13 supports the inner wall of holding at joint upper cover 1, connecting block 11, joint spare 13 is the partly of silica gel valve body 4 itself, make through integrated into one piece, prevent that side bend from taking place under the exogenic action of silica gel valve body 4 and case 8, make outside quick and valve port 6 cooperations.

The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.

Claims

1. The utility model provides a needleless infusion connects, includes interconnect's joint upper cover (1) and joint lower cover (2), its characterized in that: the joint upper cover (1) and the joint lower cover (2) are connected to form a closed shell (3), and a silica gel valve body (4) is arranged inside the shell (3);

a valve needle (5) is arranged on the joint lower cover (2), a valve port (6) is arranged on the valve needle (5), and the valve port (6) is communicated with a transfusion channel (7) at the bottom of the joint lower cover (2);

silica gel valve body (4) are provided with hollow case (8), case (8) are used for holding needle (5), case (8) and needle (5) interference fit, the top of silica gel valve body (4) is provided with liquid medicine entry (9), and outside transfusion system can insert from liquid medicine entry (9), silica gel valve body (4) are the turriform, and internal diameter top-down reduces earlier the back increase.

2. The needle-free infusion connector of claim 1, wherein: the inner wall of silica gel valve body (4) has a plurality of archs (10), arch (10) support hold the outer wall at needle (5), reduce the frictional force between with needle (5) to the protection is sealed.

3. The needle-free infusion connector of claim 2, wherein: when the valve needle (5) is inserted into the valve core (8), the bulge (10) is positioned above the valve port (6).

4. The needle-free infusion connector of claim 1, wherein: the longitudinal section of the silica gel valve body (4) is tower-shaped.

5. The needle-free infusion connector of claim 1, wherein: silica gel valve body (4) bottom is provided with connecting block (11), silica gel valve body (4) are fixed with joint lower cover (2) through connecting block (11).

6. The needle-free infusion connector of claim 1, wherein: the top of the silica gel valve body (4) extends out of the joint upper cover (1).

7. The needle-free infusion connector of claim 1, wherein: and the outer side of the joint upper cover (1) is provided with a thread (12).

8. The needle-free infusion connector of claim 1, wherein: the upper portion of silica gel valve body (4) is provided with joint spare (13), joint spare (13) support and hold the inner wall at joint upper cover (1).

9. The needle-free infusion connector of claim 1, wherein: the joint upper cover (1) and the joint lower cover (2) are connected through a buckle with a guide function.