CN215537350U

CN215537350U - Chute type anticoagulant syringe

Info

Publication number: CN215537350U
Application number: CN202121433508.2U
Authority: CN
Inventors: 何其燕; 蔡伟
Original assignee: First Peoples Hospital of Jiashan
Current assignee: First Peoples Hospital of Jiashan
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-01-18
Anticipated expiration: 2031-06-25

Abstract

The utility model relates to the technical field of medical instruments, in particular to a chute type anticoagulant injector, which comprises the following components: the injection device comprises an injection device, a needle tube and a piston rod, wherein the piston rod is inserted into the injection device in a sliding manner, a nipple is arranged on the bottom surface of the injection device, a needle head is arranged on the nipple, and a sliding block is arranged on the side edge of the injection device; the sliding sleeve is sleeved outside the needle cylinder, a sliding groove for accommodating the sliding block is formed in the sliding sleeve, and a spring is arranged at the bottom of the sliding groove; the protective sleeve is sleeved at the bottom end of the sliding sleeve, a protruding circular ring is arranged on the inner ring of the protective sleeve, the protective sleeve is in separated sliding connection with the sliding sleeve through the needle cylinder, and the spring in the sliding groove enables the needle cylinder to automatically and reversely retract into the sliding sleeve after the injection of the needle head is completed, so that the needle head is hidden in the sliding sleeve, and the medical personnel can be effectively prevented from being stabbed by the needle head; meanwhile, the raised ring on the protective sleeve is sleeved at the raised part of the blood permeation pipeline interface, so that blood is splashed into the protective sleeve when the needle head is pulled out of the blood permeation pipeline, and the propagation of blood-borne diseases is isolated.

Description

Chute type anticoagulant syringe

Technical Field

The utility model relates to the technical field of medical instruments, and relates to a chute type anticoagulant syringe.

Background

In recent years, more and more chronic kidney diseases, especially end-stage kidney diseases, seriously threaten the health of human beings. After the chronic kidney disease has progressed to the uremic stage, hemodialysis is the treatment of choice for most uremic patients, and life-long treatment is required once dialysis is initiated. Hemodialysis is to introduce the blood of a patient into the body through puncture, remove related toxins such as filtration, dispersion, exchange, adsorption and the like through a special hemodialysis machine or a dialysis membrane and a dialysis pump, and then introduce the blood into the body again for repeated uninterrupted treatment. The uremia-maintaining hemodialysis patient needs to be treated for 4-hours once, at least 3 times per week, and the normal metabolism of the human body can be ensured when the treatment time reaches 12 hours per week. The anticoagulant is often used in dialysis to maintain extracorporeal circulation without coagulation and ensure the dialysis process to be carried out smoothly. Currently, heparin and low molecular heparin are commonly used as anticoagulants. The ideal anticoagulant does not influence the coagulation condition in the body of a patient, and can play an anticoagulant role in extracorporeal circulation. At the present stage, the types of anticoagulants used in the department of China are more, and the packages are different. The nurse in the hemodialysis room is easy to cause the puncture injury of the anticoagulant due to the defects of equipment design and large workload in the operation process of putting the machine on the machine. Meanwhile, the anticoagulant needle used up is provided with blood of a patient, so that a small amount of blood is inevitably splashed when the blood is pulled out of a blood path tube, various blood-borne diseases are easily spread, and great risk of nosocomial infection exists. Therefore, in order to better prevent the occurrence of needle stick injuries and avoid the risk of blood splashing, the anticoagulant syringe is developed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sliding groove type anticoagulant syringe for solving the problems in the prior art.

The purpose of the utility model can be realized by the following technical scheme: a slotted anticoagulant syringe comprising:

the injection device comprises an injection device, a needle tube and a piston rod, wherein the piston rod is inserted into the injection device in a sliding manner, a nipple is arranged on the bottom surface of the injection device, a needle head is arranged on the nipple, and a sliding block is arranged on the side edge of the injection device;

the sliding sleeve is sleeved outside the needle cylinder, a sliding groove for accommodating the sliding block is formed in the sliding sleeve, and a spring is arranged at the bottom of the sliding groove;

the protective sleeve is sleeved at the bottom end of the sliding sleeve, and a protruding circular ring is arranged on the inner ring of the protective sleeve.

Further improvement, the spout symmetry is provided with two sets ofly, the spout includes round slot portion and rectangle slot portion, rectangle slot portion one end intercommunication sliding sleeve inner chamber, rectangle slot portion other end intercommunication round slot portion.

In a further improvement, the sliding sleeve is also provided with a limiting groove, and the depth of the limiting groove is smaller than that of the sliding groove.

In a further improvement, the limiting groove comprises a first limiting cavity and a second limiting cavity, the cross section of the first limiting cavity is the same as that of the sliding block, and the second limiting cavity is arranged inside the sliding sleeve.

In a further improvement, the sliding sleeve is made of a plastic transparent material.

Compared with the prior art, the chute type anticoagulant syringe is in separated sliding connection with the sliding sleeve through the needle cylinder, and the spring in the chute enables the needle cylinder to automatically and reversely retract into the sliding sleeve after the needle head finishes injection, so that the needle head is hidden in the sliding sleeve, and medical personnel are effectively prevented from being punctured by the needle head; meanwhile, the raised ring on the protective sleeve is sleeved at the raised part of the blood permeation pipeline interface, so that blood is splashed into the protective sleeve when the needle head is pulled out of the blood permeation pipeline, and the propagation of blood-borne diseases is isolated.

Drawings

FIG. 1 is a schematic structural diagram of the present invention

FIG. 2 is a schematic diagram of the structure of the explosion diagram of the present invention

FIG. 3 is a schematic view of the structure of the sliding sleeve end face of the present invention

FIG. 4 is a schematic view of another view angle of the sliding sleeve of the present invention

In the figure, 1-syringe, 11-syringe, 111-slider, 12-piston rod, 16-nipple, 17-needle, 2-sliding sleeve, 21-sliding groove, 211-circular groove, 212-rectangular groove, 22-limiting groove, 221-limiting cavity I, 222-limiting cavity II, 23-spring, 3-protective sleeve, 31-protruding ring.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "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 device or element being 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.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solution of the present invention is further described below with reference to the following embodiments and accompanying drawings 1 to 4.

Example 1

A slotted anticoagulant syringe comprising: the injection device 1 comprises a needle cylinder 11 and a piston rod 12 inserted into the needle cylinder 11 in a sliding manner, wherein a nipple 16 is arranged on the bottom surface of the needle cylinder 11, a needle head 17 is arranged on the nipple 16, and a sliding block 111 is arranged on the side edge of the needle cylinder 11; the sliding sleeve 2 is sleeved outside the needle cylinder 11, a sliding groove 21 for accommodating the sliding block 111 is arranged in the sliding sleeve 2, and a spring 22 is arranged at the bottom of the sliding groove 21; the protective sleeve 3 is sleeved at the bottom end of the sliding sleeve 2, and a protruding circular ring 31 is arranged on the inner ring of the protective sleeve 3.

As shown in fig. 1 to 4, a sliding groove with a spring embedded therein is provided in the sliding sleeve, when in use, the needle cylinder slides outwards along the sliding groove in the sliding sleeve until the needle extends out and is inserted into the hemodialysis tube interface for injecting anticoagulant, and the raised circular ring on the protective sleeve is sleeved at the raised part of the hemodialysis tube interface, so that blood splashes into the protective sleeve when the needle is pulled out of the hemodialysis tube, thereby isolating the propagation of blood-borne diseases; after the blood way pipe is pulled out to the syringe needle simultaneously, through the inside compression resilience of the spring of spout, the syringe that is along spout reverse movement, until the syringe needle hide in the sliding sleeve, the effectual medical personnel of preventing are stabbed by the syringe needle.

As a further preferred embodiment, the sliding grooves 21 are symmetrically provided with two sets, the sliding groove 21 includes a circular groove portion 211 and a rectangular groove portion 212, one end of the rectangular groove portion 212 communicates with the inner cavity of the sliding sleeve 2, and the other end of the rectangular groove portion 212 communicates with the circular groove portion 211. As shown in fig. 2 and 3, the shape of the slide groove 21 is set to match the shape of the slider 111, and the slider 111 is prevented from slipping out of the slide groove 21.

As a further preferred embodiment, the sliding sleeve 2 is further provided with a limiting groove 22, and the depth of the limiting groove 22 is smaller than the depth of the sliding groove 21. As shown in fig. 3, the depth of the sliding slot 21 is greater than the length of the sliding block 111, so that the sliding block 111 can slide in the sliding slot 21, and further the needle 17 extends out of the protective sheath 3, and the depth of the limiting slot 22 matches the length of the sliding block 111, and when the sliding block 111 is clamped in the limiting slot 22, the rotation of the syringe 11 can be limited.

As a further preferred embodiment, the limiting groove 22 includes a first limiting cavity 221 and a second limiting cavity 222, the cross-sectional shape of the first limiting cavity 221 is the same as that of the sliding block 111, and the second limiting cavity 222 is disposed inside the sliding sleeve 2. As shown in figure 4, after the first limit cavity 221 and the second limit cavity 222 which are communicated with each other are used for inserting the sliding block 111 on the needle cylinder 11 along the first limit cavity 221, the needle cylinder 11 is vibrated anticlockwise, so that the sliding block 111 slides into the second limit cavity 222, and the sliding of the needle cylinder 11 out of the sliding sleeve 2 can be limited because the second limit cavity 222 is arranged in the sliding sleeve 2.

As a further preferred embodiment, the sliding sleeve 2 is a plastic transparent material. In particular, the position condition of the inner needle head is convenient to observe by using a transparent material.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A slotted anticoagulant syringe comprising:

2. The sliding groove type anticoagulant syringe according to claim 1, wherein the sliding grooves are symmetrically arranged in two groups, and each sliding groove comprises a round groove part and a rectangular groove part, one end of each rectangular groove part is communicated with the inner cavity of the sliding sleeve, and the other end of each rectangular groove part is communicated with the round groove part.

3. The sliding groove anticoagulant syringe of claim 1 wherein the sliding sleeve is further provided with a limiting groove, the depth of the limiting groove being less than the depth of the sliding groove.

4. The sliding groove type anticoagulant syringe according to claim 3, wherein the limiting groove comprises a first limiting cavity and a second limiting cavity, the cross section of the limiting cavity is the same as that of the sliding block, and the second limiting cavity is arranged inside the sliding sleeve.

5. The slotted anticoagulant syringe of claim 1 wherein the slot is a plastic transparent material.