CN215023975U

CN215023975U - Remaining needle convenient for blood sampling and blood backflow prevention

Info

Publication number: CN215023975U
Application number: CN202120584646.4U
Authority: CN
Inventors: 匡莲子; 梁珍; 田馨怡
Original assignee: Hunan Provincial Peoples Hospital
Current assignee: Hunan Provincial Peoples Hospital
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-12-07
Anticipated expiration: 2031-03-23

Abstract

The utility model provides a keep somewhere needle convenient to blood sampling and prevent blood reflux, establish the hose of keeping somewhere outside the pjncture needle and keep somewhere soft needle including pjncture needle, cover, keep somewhere soft needle and keep somewhere the hose and link to each other, it is equipped with the first side pipe that is used for connecting the transfer line on the hose to keep somewhere, connect on the first side pipe and prevent the reflux joint, it still is equipped with the second side pipe that is used for the blood sampling to keep somewhere on the hose. Through setting up the second side pipe that is used for the blood sampling specially, blood sampling and infusion can independently go on, both avoid puncture many times, also need not to change different joints when blood sampling and infusion switch, have simplified clinical operation. The first side pipe connected with the infusion pipe is connected with the backflow prevention joint, and the blood returning in the indwelling needle can not enter the infusion pipe, so that the blood returning is reduced.

Description

Remaining needle convenient for blood sampling and blood backflow prevention

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to keep somewhere needle convenient to blood sampling and prevent blood reflux.

Background

Under modern medical conditions, doctors first take blood from patients before diagnosing the patients, test the blood, and scientifically judge the patients according to test results and the symptoms of the patients so as to ensure the accuracy of diagnosis. Therefore, blood sampling is an essential link for patients to see doctor. In general, in blood collection in hospitals, a disposable blood collection needle is used for performing venipuncture on a blood vessel of a patient, and the disposable blood collection needle is pulled out and discarded after blood collection. Some complicated physical examination or the inspection of serious disease need carry out blood sampling many times at different time periods in the inspection process, to medical personnel, to the puncture of same patient many times, operate comparatively loaded down with trivial details, greatly increased medical personnel's work load. For a patient, the blood vessel of the human body needs to be punctured each time to establish a blood sampling channel, so that the blood vessel of the patient is excessively damaged, the puncturing pain of the patient is greatly increased, and the patient is easily infected due to multiple times of puncturing, so that the health of the patient is very unfavorable; if infection occurs, the detection result may be affected. And some patients need to be transfused after blood sampling, and when the transfusion is needed, medical staff can puncture the skin of the patients again, so that the patients can puncture twice or more times, and the pain of the patients is increased.

CN106510729B discloses a multiple blood collection indwelling needle, which solves the problem of multiple punctures caused by multiple blood collection, but needs to be punctured separately when transfusion is needed. CN211068449U discloses an indwelling blood taking needle, the end of the infusion catheter is provided with a communicating pipe, when blood is required to be taken, a blood taking needle tube is arranged on the communicating pipe for taking blood, when infusion is required, the blood taking needle tube is taken down, an infusion bottle is connected on the communicating pipe for infusion, and the problem that multiple times of blood taking and infusion need to be respectively punctured is solved. However, when the indwelling needle with such a structure is switched between infusion and blood collection, the blood collection needle needs to be attached to or detached from the communicating tube, which is troublesome to operate and increases the possibility of contamination of the communicating port. In addition, after the indwelling needle is adopted for transfusion, the phenomenon of blood return easily occurs in the indwelling needle under the influence of venous blood vessel pressure or limb movement of a patient, and when the transfusion is performed again, the blood return is firstly drawn out and then the transfusion is performed, so that the operation of drawing back the blood in one step is added; the blood return also can generate thrombus, if the transfusion catheter is blocked, a new indwelling needle needs to be replaced, the puncture pain of a patient is increased, the medical cost is increased, and the workload of nurses is increased. Therefore, in view of the above problems, further improvement of the indwelling needle is required.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides an indwelling needle which is convenient for blood sampling and blood backflow prevention, a side hole which is specially used for blood sampling is arranged on an indwelling hose of the indwelling needle, blood sampling and transfusion can be independently carried out, and the operation is convenient; moreover, the anti-reflux joint is arranged on the side tube connected with the infusion tube, so that the blood return is reduced.

The technical scheme of the utility model is that: the utility model provides a keep somewhere needle convenient to blood sampling and prevent blood reflux, establishes the hose of keeping somewhere outside the pjncture needle and keeps somewhere the soft needle including pjncture needle, cover, keeps somewhere the soft needle and links to each other with keeping somewhere the hose, it is equipped with the first side pipe that is used for connecting the transfer line on the hose to keep somewhere, connect on the first side pipe and prevent the reflux joint, it still is equipped with the second side pipe that is used for the blood sampling on the hose to keep somewhere. Through setting up the second side pipe that is used for the blood sampling specially, blood sampling and infusion can independently go on, both avoid puncture many times, also need not to change different joints when blood sampling and infusion switch, simplified clinical operation, just reduced the contaminated risk of joint of connecting the transfer line. Connect on the first side pipe of connecting the transfer line and prevent the connector that backflows, can realize: during transfusion, the liquid medicine in the transfusion tube can flow into the indwelling needle through the joint, and the blood returning in the indwelling needle can not pass through the joint and can not enter the transfusion tube. After the indwelling needle is used for transfusion, if blood returns, the blood can only flow to the backflow prevention joint at most and cannot enter the transfusion tube, and the resistance generated when the blood returns to the backflow prevention joint is transmitted to the blood vessel, so that the blood return can be inhibited, and the blood return is reduced.

Further, the first side pipe, the second side pipe and the indwelling hose are integrally formed. The integrated forming reduces unnecessary interfaces, namely reduces the risk of leakage and is also beneficial to the flow of liquid medicine and blood.

Further, the distance between the second side tube and the needle point of the indwelling soft needle is shorter than that between the first side tube and the needle point of the indwelling soft needle. The second side tube is closer to the indwelling soft needle and is also closer to the blood vessel, so that the extra bleeding amount during blood sampling can be reduced.

Furthermore, the distance between the second side tube and the needle point of the indwelling soft needle is 3-7mm shorter than that between the first side tube and the needle point of the indwelling soft needle. Still further, 5mm is preferable. In view of the size of the commonly used indwelling needle, the second side tube is preferably 3-7mm closer to the needle point of the indwelling soft needle than the first side tube, and is not only close to the blood vessel, but also does not influence the operation of puncturing the blood vessel by the indwelling soft needle. Even more preferably a distance of 5 mm.

Furthermore, an included angle between a plane where the first side pipe and the remaining hose are located and a plane where the second side pipe and the remaining hose are located is 30-45 degrees. A certain included angle is formed between the two, so that the indwelling needle can be conveniently fixed, blood sampling operation is convenient, and the included angle is preferably 30-45 degrees, and is further preferably 40 degrees.

Further, the second side tube end is sealed with a heparin cap. The heparin cap is used for sealing the tube to prevent blood backflow and coagulation during non-blood collection.

Furthermore, prevent the reflux and connect including preventing the reflux connecting pipe, prevent the reflux connecting pipe with the one end of first side union coupling is equipped with prevents the reflux non return membrane. The anti-backflow check film acts like a one-way valve, and liquid can only pass through in one direction, but cannot pass through in the opposite direction. And the anti-backflow non-return film is made of high polymer materials, so that blood coagulation cannot be caused. The one end of preventing the backflow connecting pipe is connected at first side pipe, and the other end is used for connecting the infusion extension pipe, and the liquid medicine in the infusion extension pipe can get into first side pipe then get into through preventing the backflow connecting pipe and keep somewhere in the needle, and liquid medicine or blood return in the first side pipe can not get into the infusion extension pipe through preventing the backflow connecting pipe.

Furthermore, the backflow-preventing joint further comprises a protective sleeve, the protective sleeve is sleeved on the backflow-preventing connecting pipe, and covers one end, provided with the backflow-preventing check film, of the backflow-preventing connecting pipe. Protective sleeve had both had the guard action to the interface of preventing the backflow connecting pipe and first side hole, and in addition, it is generally shorter to prevent the backflow connecting pipe, can install through holding between the fingers the protection tube cover prevent the backflow joint, both conveniently hold between the fingers, also avoid hand direct contact to kneck, reduce interface pollution.

Furthermore, protective sleeve is equipped with the internal thread, the position that first side pipe and protective sleeve are connected is equipped with corresponding external screw thread, first side pipe and protective sleeve pass through the internal thread with the external screw thread fastening. The threaded connection fastening mode is convenient to operate clinically and convenient to replace.

Furthermore, the other end of the backflow prevention joint is connected with an infusion extension tube, and a Y-shaped joint is arranged at one end, far away from the backflow prevention joint, of the infusion extension tube. One of the Y-shaped connectors can be connected with an infusion device for infusion, the other connector is added with other medicines in the infusion process, and different medicines can be infused through the two connectors, so that the Y-shaped connector is very convenient to use.

The utility model has the advantages that: the utility model provides a keep somewhere needle convenient to blood sampling and prevent blood reflux sets up the side opening that is used for the blood sampling specially on keeping somewhere the hose of needle, can independently take a blood sample and infuse, avoids taking a blood sample and infuse and need puncture many times, convenient operation, is fit for clinical application; the second side tube for taking blood is closer to the blood vessel than the first side tube for transfusion, and the extra bleeding amount during blood taking is reduced compared with the common mode of taking blood from a transfusion port; the backflow prevention joint is arranged on the side pipe connected with the infusion tube, so that liquid in the indwelling needle is prevented from flowing backwards, and blood return can be reduced.

Drawings

FIG. 1 is an exploded view of an indwelling needle according to embodiment 1 of the present invention;

fig. 2 is a schematic view of an anti-backflow joint according to embodiment 1 of the present invention;

in the figure: 1-puncture needle, 11-steel needle seat, 12-steel needle, 13-needle holding handle, 2-indwelling hose, 3-indwelling soft needle, 4-second side tube, 41-heparin cap, 5-first side tube, 6-backflow prevention joint, 61-backflow prevention connecting tube, 611-backflow prevention non-return film, 62-protective sleeve, 7-infusion extension tube and 8-Y type joint.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

The invention will be further elucidated below on the basis of specific embodiments.

As shown in fig. 1, the indwelling needle convenient for blood collection and blood backflow prevention shown in this embodiment includes a puncture needle 1, an indwelling hose 2 and an indwelling soft needle 3 which are sleeved outside the puncture needle 1, the puncture needle includes a steel needle base 11, a steel needle 12 and a needle holding handle 13, the indwelling soft needle 3 is connected with the indwelling hose 2, the indwelling hose 2 is provided with a second side tube 4 and a first side tube 5, and the first side tube 5, the second side tube 4 and the indwelling hose 2 are integrally formed and made of transparent plastic. The second side tube 4 is used for blood sampling, and the distance from the second side tube 4 to the needle point of the indwelling soft needle 3 is 5mm less than that from the first side tube 5 to the needle point of the indwelling soft needle 3. When the blood is not collected, the end of the second side tube 4 is sealed by a heparin cap 41. In order to facilitate the fixing of the indwelling needle and the blood collection operation, the angle between the plane of the first side tube 5 and the indwelling hose 2 and the plane of the second side tube 4 and the indwelling hose 2 is 40 degrees in the present embodiment. In this embodiment, the first side pipe 5 is connected to the backflow prevention joint 6, the backflow prevention joint 6 includes a backflow prevention connecting pipe 61 and a protective sleeve 62, the backflow prevention connecting pipe 61 is schematically illustrated in fig. 2, one end of the backflow prevention connecting pipe 61 connected to the first side pipe 5 is a backflow prevention check film 611, the end of the backflow prevention check film 611 can be tightly inserted into the first side pipe 5, the protective sleeve 62 covers one end of the backflow prevention connecting pipe 61 connected to the first side pipe 5, and the protective sleeve 62 and the first side pipe 5 are connected and fastened in a threaded manner. The other end of the anti-backflow connecting pipe 61 is connected with an infusion extension pipe 7, the tail end of the infusion extension pipe 7 is connected with a Y-shaped connector 8, the Y-shaped connector 8 is used for connecting infusion or injection liquid medicine of an infusion apparatus, and the infusion or injection liquid medicine is sealed by a heparin cap 81 or a positive pressure cap.

When the indwelling needle is used, the steel needle 12 of the puncture needle 1 is inserted into the blood vessel of the patient, and the indwelling soft needle 3 is also inserted into the blood vessel, and then the puncture needle 1 is withdrawn. In blood collection, a blood collection needle or a blood collection tube is inserted from the end of the second side tube 4, and fresh blood is drawn from the second side tube. If the infusion is a normal infusion, the tail end of the second side tube 4 is in a sealed state, the infusion set is connected to any interface of the Y-shaped connector 8, the liquid medicine enters the indwelling hose 2 through the extension tube 7, the anti-reflux connecting tube 61 and the first side tube 5, and then enters the blood vessel through the indwelling soft needle 3. Like this, blood sampling and infusion only need to the patient puncture once can, reduced the misery that the patient was punctured repeatedly, because the second side pipe 4 that is used for taking a blood sample is more close to the blood vessel moreover, can adopt the hemorrhage rapidly, reduce the amount of bleeding of unnecessary. Because of the existence of the backflow prevention joint, the blood return is less, and the trouble of blood return pumping when the blood is used again is reduced.

It is obvious that the above are only some embodiments of the present invention, and are not used for limiting the present invention, and for those skilled in the art, the present invention can have the combination and modification of the above various technical features, and those skilled in the art can replace the modifications, equivalents, or use the structure or method of the present invention in other fields to achieve the same effect without departing from the spirit and scope of the present invention, and all belong to the protection scope of the present invention.

Claims

1. The utility model provides a keep somewhere needle convenient to blood sampling and prevent blood reflux, establish the hose of keeping somewhere outside the pjncture needle and keep somewhere soft needle including pjncture needle, cover, keep somewhere soft needle with it links to each other to keep somewhere the hose, it is equipped with the first side pipe that is used for connecting the transfer line on the hose to keep somewhere, its characterized in that: the first side pipe is connected with an anti-backflow connector, and the indwelling hose is further provided with a second side pipe for blood sampling.

2. The indwelling needle for facilitating blood collection and preventing blood backflow as claimed in claim 1, wherein: the first side pipe, the second side pipe and the indwelling hose are integrally formed.

3. The indwelling needle for facilitating blood collection and preventing blood backflow as claimed in claim 1, wherein: the distance between the second side tube and the needle point of the indwelling soft needle is shorter than that between the first side tube and the needle point of the indwelling soft needle.

4. The indwelling needle for facilitating blood collection and preventing blood backflow according to claim 3, wherein: the distance between the second lateral tube and the needle point of the indwelling soft needle is 3-7mm shorter than that between the first lateral tube and the needle point of the indwelling soft needle.

5. The indwelling needle for facilitating blood collection and preventing blood backflow according to claim 3, wherein: and an included angle between a plane where the first side pipe and the remaining hose are located and a plane where the second side pipe and the remaining hose are located is 30-45 degrees.

6. The indwelling needle for facilitating blood collection and preventing blood backflow as claimed in claim 1, wherein: the second side tube end is sealed with a heparin cap.

7. The indwelling needle for facilitating blood collection and preventing blood backflow according to any of claims 1 to 6, wherein: the backflow-preventing joint comprises a backflow-preventing connecting pipe, wherein a backflow-preventing non-return film is arranged at one end, connected with the first side pipe, of the backflow-preventing connecting pipe.

8. The indwelling needle for facilitating blood collection and preventing blood backflow according to claim 7, wherein: the backflow-preventing connector further comprises a protective sleeve, the protective sleeve is sleeved on the backflow-preventing connecting pipe, and covers one end, provided with a backflow-preventing check film, of the backflow-preventing connecting pipe.

9. The indwelling needle for facilitating blood collection and preventing blood backflow according to claim 8, wherein: the protective sleeve is provided with an internal thread, a corresponding external thread is arranged at the position where the first side pipe is connected with the protective sleeve, and the first side pipe and the protective sleeve are fastened through the internal thread and the external thread.

10. The indwelling needle for facilitating blood collection and preventing blood backflow according to any of claims 8 to 9, wherein: the other end of the backflow prevention joint is connected with an infusion extension tube, and one end, far away from the backflow prevention joint, of the infusion extension tube is provided with a Y-shaped joint.