CN214911612U

CN214911612U - Needleless airtight connecting piece

Info

Publication number: CN214911612U
Application number: CN202120141438.7U
Authority: CN
Inventors: 何辰; 李超奇
Original assignee: Baihe Medical Technology Wuhan Co ltd
Current assignee: Baihe Medical Technology Wuhan Co ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-11-30
Anticipated expiration: 2031-01-19

Abstract

The utility model discloses a needleless airtight connecting piece, which comprises a joint upper cover, a joint lower base and a pagoda-shaped silica gel valve, wherein the pagoda-shaped silica gel valve is filled in the inner cavity of the joint upper cover and is positioned at the top of the joint lower base, the pagoda-shaped hollow silica gel valve and the joint upper cover form sealing, and the outer wall of the top end of the joint upper cover is provided with a thread connected with an infusion apparatus; the pagoda-shaped silica gel valve is of a hollow structure, a branch connector is arranged on the upper portion of the lower base of the connector, the branch connector is provided with threads, and an inner cavity channel of the branch connector is communicated with the infusion channel. The utility model discloses liquid reflux when can avoiding using can connect the use many times, needn't demolish the infusion and connect and change the infusion and connect after the use, uses safely effectively more.

Description

Needleless airtight connecting piece

Technical Field

The utility model relates to the field of medical equipment, concretely relates to needleless airtight connection spare.

Background

With the expansion of intravenous infusion therapy, the risk of blood-borne infections caused by occupational exposure of caregivers to needle stick injuries is increasing. In recent years, intravenous needle infusion has been widely spread. When the intravenous infusion treatment process needs to be repeatedly performed for a long time, the intravenous indwelling needle or indwelling catheter and the liquid medicine injection device are generally connected with each other through the connector, thereby realizing the medicine adding. The joint of traditional latex diaphragm need just can realize adding the medicine through the acupuncture, consequently, has syringe needle pollutant and rubber piece to get into the liquid medicine and enter human risk to and cause medical personnel to be stabbed. At present, the clinical needleless infusion technology does not use an acupuncture mode to connect in an infusion system, and has important significance for reducing the pain of a patient, protecting the venous vessel of the patient, maintaining a medication passage, reducing the occupational risk of acupuncture infection of an operator, reducing the labor intensity of medical care personnel and improving the treatment quality.

But the prior conventional needleless infusion joint does not have positive pressure liquid feeding performance. When the medicine adding needle or the infusion apparatus is removed after infusion, the silicon rubber valve body in the infusion joint recovers deformation and generates negative pressure in the joint, and the negative pressure enables part of liquid medicine which is just input into a human body to return to an inner cavity of the joint along with blood of a patient; if the treatment is not timely, the transfusion pipeline is blocked and the infection is easy to cause complications.

Therefore, aiming at the defects of the prior art, it is important to provide a needleless airtight connector for avoiding the liquid backflow in the using process.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects existing in the prior art, the utility model provides a needleless airtight connecting piece for preventing the backflow of blood.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a needleless closed connecting piece comprises a joint upper cover, a joint lower base and a pagoda-shaped silica gel valve; the pagoda-shaped silica gel valve is filled in the inner cavity of the joint upper cover and is positioned at the top of the lower base of the joint, the pagoda-shaped silica gel valve and the joint upper cover form sealing, and the pagoda-shaped silica gel valve is of a hollow structure.

The outer wall of the top end of the connector upper cover is provided with threads connected with an infusion apparatus, the inner cavity of the connector upper cover comprises a plurality of inner cavity inclined planes, and the inner cavity part of the connector upper cover comprises an inner cavity bottom groove.

The pagoda-shaped silica gel valve comprises an inner cavity and an outer wall, the outer wall comprises a plurality of inclined planes, the number and the size of the inclined planes are matched with the inclined planes of the inner cavity of the connector upper cover to form a sealing structure, and an incision is formed in the upper end of the pagoda-shaped silica gel valve.

The upper part of the connector lower base comprises a valve needle, a valve port channel and a boss, the side wall of the lower part of the connector lower base is provided with a branch connector, an input channel penetrates through the inside of the whole connector lower base, the boss is in snap fit with a groove at the bottom of an inner cavity of the connector upper cover, the branch connector is provided with threads, and the inner cavity channel of the branch connector is communicated with an infusion channel.

The utility model discloses following beneficial effect has: (1) the puncture needle is not needed, the accidental needle stick injury can be effectively avoided, the possibility of spreading blood-borne diseases caused by the accidental needle stick of nursing personnel is reduced, the multiple tube flushing time is saved, the workload of medical personnel is reduced to a great extent, and the cost is saved; (2) based on the design of the inner cavity and the valve core of the closed connecting piece, when the infusion tube or the injector is pulled down, negative pressure can not be generated, blood backflow is prevented from forming thrombus, the tube is sealed by saline without heparin sodium, and only normal saline is used for flushing; (3) the incidence rate of tube blockage is reduced, the recanalization obstacle is effectively prevented, and the incidence rate of phlebitis is obviously reduced; (4) the needle-free closed connecting piece ensures that the catheter is always in a sterile closed state, effectively reduces the infection rate, protects the patient and overcomes the defect of needle infusion connection.

Drawings

The present invention is further explained by using the attached drawings, but the content in the attached drawings does not constitute any limitation to the present invention.

FIG. 1 is a structural assembly view of a needleless access seal connector;

FIG. 2 is a longitudinal cross-sectional view of the needleless access connector;

FIG. 3 is a perspective view and a longitudinal sectional view of the joint upper cover;

FIG. 4 is a perspective view and a longitudinal section view of a pagoda-shaped silicone valve;

FIG. 5 is a perspective view and a longitudinal section of a lower base;

in the figure: comprises an upper connector cover 1, a pagoda-shaped silica gel valve 2, a lower connector base 3 and a needleless closed connecting piece 4; threads 101; connector upper cover inner cavity bevel 1102; connector upper cover inner cavity inclined plane 2103; a recess 104; pagoda-shaped silica gel valve slope 1201; a pagoda-shaped silicone valve bevel 2202; a cut-out 203; a pagoda-shaped silicone valve interior chamber 204; a valve needle 301; a valve port passage 302; a boss 303; a branch joint 304; threads 305; an infusion channel 306; branch junction lumen channel 307.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 and 2, the needleless airtight connection device comprises a connector upper cover 1, a pagoda-shaped silica gel valve 2 and a connector lower base 3. The pagoda-shaped silica gel valve 2 is positioned in the joint upper cover 1 and at the top of the joint lower base 3. The pagoda-shaped silica gel valve 2 is connected with the joint upper cover 1, and the joint upper cover 1 is connected with the joint lower base 3.

As shown in fig. 3, the connector upper cover 1 is provided with threads 101 and is connected with an infusion apparatus, and the inclined plane 102 and the inclined plane 2103 of the inner cavity of the connector upper cover 1 are tightly attached to the inclined plane 1201 and the inclined plane 2202 of the pagoda-shaped silica gel valve 2 to form sealing; the groove 104 at the bottom of the inner cavity of the joint upper cover 1 is in snap fit with the boss 303 of the joint lower base 3 without using other adhesives or equipment for bonding or welding.

As shown in fig. 4, the inner part of the pagoda-shaped silica gel valve 2 is of a cavity structure, and an inner cavity 204 of the pagoda-shaped silica gel valve 2 is tightly matched with a valve needle 301 on the joint lower base 3; the upper end of the pagoda-shaped silica gel valve 2 is provided with a notch 203, when the infusion set is squeezed during infusion, the notch 203 is opened, and liquid flows into an infusion channel 306 through a valve port channel 302 on a valve needle 301; when the infusion is completed, the slit 203 is closed, preventing the backflow of the liquid.

As shown in FIG. 5, the side wall of the connector lower base 3 is provided with a branch connector 304 having threads 305, and a branch connector inner cavity channel 307 is communicated with an infusion channel 306 for delivering the medical fluid into the infusion channel 306.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A needleless closed connecting piece comprises a joint upper cover, a joint lower base and a pagoda-shaped silica gel valve; the sealing device is characterized in that the pagoda-shaped silicon rubber valve is filled in an inner cavity of the joint upper cover and is positioned at the top of the joint lower base, the pagoda-shaped hollow silicon rubber valve and the joint upper cover form sealing, and the pagoda-shaped silicon rubber valve is of a hollow structure.

2. The needle-free airtight connector according to claim 1, wherein the outer wall of the top end of the connector upper cover is provided with threads for connecting with an infusion set, the inner cavity of the connector upper cover comprises a plurality of inner cavity inclined planes, and the inner cavity part of the connector upper cover comprises an inner cavity bottom groove.

3. The needle-free connector of claim 2 wherein the pagoda-shaped silicone valve includes an interior and an exterior wall, the exterior wall including a plurality of ramps, the number and size of the ramps cooperating with the ramp of the interior of the adapter top cover to form the seal, the pagoda-shaped silicone valve having a cutout at the upper end.

4. The needleless sealing connection device of claim 3, wherein the upper part of the connector lower base comprises a needle, a valve port channel and a boss, the lower side wall of the connector lower base is provided with a branch connector, the input channel penetrates through the inside of the connector lower base, the boss is in snap fit with a groove at the bottom of the inner cavity of the connector upper cover, the branch connector is provided with threads, and the branch connector inner cavity channel is communicated with the infusion channel.