CN215386549U

CN215386549U - Remaining needle with backflow prevention structure

Info

Publication number: CN215386549U
Application number: CN202121457659.1U
Authority: CN
Inventors: 陈仁仁
Original assignee: First Affiliated Hospital of Nanchang University
Current assignee: First Affiliated Hospital of Nanchang University
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-04
Anticipated expiration: 2031-06-29

Abstract

The utility model relates to the technical field of medical supplies, and particularly discloses an indwelling needle with a backflow prevention structure, which comprises an indwelling needle tube body, wherein one end of the indwelling needle tube body is communicated with an auxiliary structure for injecting liquid and auxiliary liquid, a fixed block is fixedly connected to the inner bottom of the indwelling needle tube body, an indwelling needle is arranged below the indwelling needle tube body, the indwelling needle penetrates into the indwelling needle tube body and is fixedly connected with the fixed block, a sleeve penetrating out of the indwelling needle tube body is fixedly connected to the upper end of the fixed block, a connecting rod assembly for plugging the indwelling needle is connected in the sleeve in a sliding mode, a cavity is formed in the fixed block, inflow holes communicated with the cavity are formed in two ends of the fixed block, and a plugging block for plugging the inflow holes is connected to an external thread of the indwelling needle tube body, so that the problem that blood easily flows back when the indwelling needle works is solved.

Description

Remaining needle with backflow prevention structure

Technical Field

The application relates to the technical field of medical supplies, and specifically discloses a remaining needle with an anti-backflow structure.

Background

Venous indwelling needles are widely used for venous transfusion therapy, and in clinical therapy, venous transfusion is performed, and blood often flows back to the indwelling needle or an infusion apparatus due to venous pressure rise caused by the activity of a patient; blood return occurs in the skin tube of the indwelling needle of the patient, which causes fear of the patient; the returned blood is easy to cause the indwelling needle to block the tube in the leather tube; the fear of the patient sharply increases, the clinical workload of nurses increases, the working cost increases, and the workload of venipuncture increases, so that the inventor provides the indwelling needle with the backflow preventing structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a vein reflux prevention indwelling needle, which aims to solve the technical problems that: how to effectively solve the problem of blood backflow when the indwelling needle works.

In order to achieve the above object, the present invention provides the following basic solutions:

an indwelling needle with a backflow prevention structure comprises an indwelling needle tube body, wherein one end of the indwelling needle tube body is communicated with an auxiliary structure used for injecting liquid and auxiliary liquid;

keep somewhere the interior bottom rigid coupling of needle body and have the fixed block, the below of keeping somewhere the needle body is equipped with keeps somewhere the needle, it wears to enter and keeps somewhere needle body and fixed block rigid coupling to keep somewhere the needle, the upper end rigid coupling of fixed block has the sleeve pipe of wearing out to keep somewhere the needle body, sliding connection has the connecting rod subassembly that is used for the shutoff to keep somewhere the needle in the sleeve pipe, the inside opening of fixed block has the cavity, and both ends are equipped with the inflow hole with the cavity intercommunication, it has the shutoff piece that is used for the shutoff to flow the hole to keep somewhere the external screw thread connection that the needle body is located the fixed block.

The principle and effect of this basic scheme lie in:

1. compared with the prior art, this device simple structure, the design is ingenious, has at first set up auxiliary structure, utilizes auxiliary structure to realize the injection of liquid medicine, compares in the form that traditional integral type was injected into, and the liquid medicine is difficult to receive the pollution more.

2. Compared with the prior art, this device makes the innovation on avoiding the blood backward flow, at first if take place the blood backward flow, it is greater than intraductal blood pressure of cover to explain venous blood pressure, and then lead to the backward flow, consequently, this device inserts the cavity in the fixed block through the second pole, make blood can't continue the backward flow, patient can't continue fearful psychologically, wait for the mood peaceful and reply after, blood falls back naturally, the second pole returns back and can, and, utilize shutoff piece threaded connection to plug up the inflow hole, continue to push down the second pole, make the intraductal pressure of cover increase, make blood pressure match with sleeve pipe pressure, improve the blood backward flow degree of difficulty, solve when keeping somewhere the needle during operation, the problem of the easy backward flow of blood.

3. Compared with the prior art, the device can not only treat the problem of blood backflow, but also make blood unable to contact with the liquid medicine due to the characteristic that the plugging block plugs the outflow hole, so that the liquid medicine is not polluted, and the liquid medicine can be continuously used.

Furthermore, the auxiliary structure comprises an extension tube communicated with the indwelling needle tube body and an extension line arranged at the free end of the extension tube, and the free end of the extension line is communicated with an injection structure. The auxiliary structure is used for realizing the injection of the liquid medicine.

Further, the injection structure comprises an injection tube and an auxiliary tube which are communicated with the extension line, the injection structure is a Y-shaped structure, and the height of the injection tube is higher than that of the auxiliary tube.

Further, a protective shell is detachably connected to the outside of the indwelling needle. The protective shell is used for protecting the indwelling needle.

Further, the protective housing is a transparent plastic protective housing. The indwelling needle can be observed through the outside.

Furthermore, the connecting rod assembly comprises a first rod, a second rod and a connecting block arranged between the first rod and the second rod, and the free end of the second rod can penetrate into the fixing block to be in clearance fit with the cavity. The change of the pressure is effected by sliding of the second rod.

Furthermore, the free end of the first rod penetrates out of the indwelling needle tube body and is fixedly connected with a handle, and anti-skid lines are arranged on the handle. The first lever is quickly slid by the handle.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of an indwelling needle with a backflow prevention structure according to an embodiment of the present application;

fig. 2 shows a connection schematic diagram of a fixing block in an indwelling needle with a backflow prevention structure according to an embodiment of the present application.

Detailed Description

To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the utility model, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Reference numerals in the drawings of the specification include: keep somewhere needle 1, protective housing 2, keep somewhere needle body 3, fixed block 4, shutoff piece 5, extension pipe 6, extension line 7, closure plate 8, injection structure 9, first pole 10, connecting block 11, second pole 12, closure plate 13.

Examples are shown in fig. 1 and 2:

the utility model provides a take anti-return structure's needle of keeping somewhere, is including keeping somewhere needle body 3, and the right-hand member intercommunication that keeps somewhere needle body 3 has the auxiliary structure that is used for injection liquid and auxiliary liquid, and is specific: the auxiliary structure includes and keeps somewhere extension pipe 6 of needle body 3 intercommunication and establish at the extension line 7 of extension pipe 6 free end, the free end intercommunication of extension line 7 has injection structure 9, injection structure 9 includes injection tube and the auxiliary tube with extension line 7 intercommunication, injection structure 9 is Y type structure, the height that highly is higher than the auxiliary tube of injection tube, utilize the injection tube to inject the liquid medicine, still be equipped with closure plate 8 on extension line 7, can avoid the inflow of liquid medicine through closure plate 8 at any time, the needle body 3 is kept somewhere in the liquid medicine entering, the auxiliary tube is used for adding supplementary liquid medicine, like the glucose, normal saline.

A fixed block 4 is fixedly connected to the inner bottom of the indwelling needle tube body 3, as shown in fig. 2, an indwelling needle 1 is arranged below the indwelling needle tube body 3, the indwelling needle 1 penetrates into the indwelling needle tube body 3 to be fixedly connected with the fixed block 4, a sleeve penetrating out of the indwelling needle tube body 3 is fixedly connected to the upper end of the fixed block 4, and a connecting rod assembly for plugging the indwelling needle 1 is slidably connected in the sleeve; as shown in fig. 1, the connecting rod assembly comprises a first rod 10, a second rod 12 and a connecting block 11 arranged between the first rod 10 and the second rod 12, the connecting block 11 is used for improving stress, and preventing the first rod 10 and the second rod 12 from being broken due to too long, the free end of the second rod 12 can penetrate into the fixed block 4 to be in clearance fit with the cavity, specifically, the free end of the second rod 12 penetrates into the cavity and is fixedly connected with a sealing plate 13, the sealing plate 13 can block the cavity, the free end of the first rod 10 penetrates out of the indwelling needle tube body 3 and is fixedly connected with a handle, the handle is provided with anti-skid threads, the second rod 12 can move downwards through the handle, and then the first rod 10 is matched with the cavity, and pressure can be changed.

The inside cavity that has opened of fixed block 4, both ends are equipped with the inflow hole with the cavity intercommunication, it has the shutoff piece 5 that is used for the shutoff to flow the hole to keep somewhere the external screw thread that needle body 3 is located fixed block 4, and the outside of keeping somewhere needle 1 can be dismantled and be connected with protective housing 2, and protective housing 2 is transparent plastic protective housing 2.

The specific implementation process comprises the following steps: firstly, the liquid medicine and the auxiliary liquid are injected from the injection structure 9, all the liquid medicine flows into the indwelling needle tube body 3, the protective shell 2 is taken down, the indwelling needle 1 is inserted into the human body, the liquid medicine flows into the cavity from the outflow hole, flows into the indwelling needle 1 from the cavity, and enters the human body from the indwelling needle 1.

Secondly, in the process of clinical injection, when venous transfusion is carried out, the blood backflow is caused to the indwelling needle 1 or the transfusion device due to the fact that the venous pressure is increased due to the movement of a patient, when the blood backflow condition occurs, the third step is to firstly restore the heart state of the patient to ensure that the blood pressure is not increased any more, secondly, to downwards move the handle, to ensure that the second rod 12 penetrates into the fixed block 4 to be matched with the cavity, so that the blood can not continuously rise, as shown in figure 2, the blocking block 5 is used for connecting through threads to block the inflow hole, the second rod 12 is continuously pressed downwards to increase the pressure in the sleeve, so that the blood pressure is equivalent to the sleeve pressure, the blood backflow difficulty is improved, in addition, as the outflow hole is blocked by the blocking block 5, the blood can not be contacted with the liquid medicine, further, the liquid medicine can not be polluted, the liquid medicine can be continuously used, and the fourth step is to after the heart state of the patient is stable, the blocking block 5 rotates outwards, the outflow hole is not blocked any more, the second rod 12 moves upwards, the pressure in the sleeve is reduced, and continuous infusion is realized.

The device solves the problem that blood is easy to flow back when the remaining needle 1 works.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a take needle of keeping somewhere of anti-return structure which characterized in that: the needle comprises an indwelling needle tube body, wherein one end of the indwelling needle tube body is communicated with an auxiliary structure for injecting liquid and auxiliary liquid;

2. The indwelling needle with the backflow preventing structure according to claim 1, wherein the auxiliary structure comprises an extension tube communicating with the indwelling needle body and an extension line arranged at the free end of the extension tube, and the free end of the extension line is communicated with the injection structure.

3. The indwelling needle with backflow preventing structure according to claim 2, wherein the injection structure comprises an injection tube and an auxiliary tube which are communicated with the extension line, the injection structure is a Y-shaped structure, and the height of the injection tube is higher than that of the auxiliary tube.

4. The indwelling needle with backflow prevention structure according to claim 1, wherein a protective case is detachably attached to the exterior of the indwelling needle.

5. The indwelling needle with backflow prevention structure according to claim 4, wherein the protective casing is a transparent plastic protective casing.

6. The indwelling needle with backflow prevention structure according to claim 1, wherein the connecting rod assembly comprises a first rod, a second rod and a connecting block arranged between the first rod and the second rod, and the free end of the second rod can penetrate into the fixing block to be in clearance fit with the cavity.

7. The indwelling needle with the backflow prevention structure according to claim 6, wherein the free end of the first rod penetrates through the indwelling needle tube body and is fixedly connected with a handle, and the handle is provided with anti-skid lines.