CN221711962U

CN221711962U - Blood sampling assembly

Info

Publication number: CN221711962U
Application number: CN202323569910.5U
Authority: CN
Inventors: 黄淑琼; 丁玉兰
Original assignee: First Affiliated Hospital Of Xiamen University Xiamen First Hospital Xiamen Red Cross Hospital Xiamen Diabetes Research Institute
Current assignee: First Affiliated Hospital Of Xiamen University Xiamen First Hospital Xiamen Red Cross Hospital Xiamen Diabetes Institute
Priority date: 2023-12-26
Filing date: 2023-12-26
Publication date: 2024-09-17
Anticipated expiration: 2033-12-26

Abstract

The utility model discloses a blood sampling assembly, which relates to the technical field of medical equipment. The technical key points are: comprising an infusion hose, the infusion hose comprising a main pipeline connected with a pipeline for arterial cannulation, the main pipeline is bifurcated at one end away from the arteriovenous cannulation and is provided with a first branch, a second branch and a third branch, the outer periphery of the first branch and the second branch are both sleeved with a flow stop clamp, the first branch is provided with a blood collection needle at one end away from the main pipeline, the second branch is provided with a threaded joint at one end away from the main pipeline, and the third branch is provided with a syringe at one end away from the main pipeline; the syringe comprises a syringe and a push-pull rod used in conjunction with the syringe, a silicone baffle covering the barrel wall is axially provided on the outer wall of the syringe, and a limit clamp adapted to the silicone baffle is provided on the side wall of the handle of the push-pull rod. It has the effect of ensuring that mixed blood will not flow into the sample and avoiding contamination of the blood collected during blood sampling.

Description

Blood sampling assembly

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a blood sampling assembly.

Background

Arterial venous blood gas analysis is an important laboratory test for assessing oxygenation, ventilation and acid-base status of a patient. The pulmonary function and the acid-base balance state of body fluid of a patient can be known through arterial and venous blood gas analysis, and the pulmonary function and the acid-base balance state of body fluid of the patient can be used as one of important bases for mechanical ventilation parameter adjustment, curative effect analysis and prognosis judgment. Along with the development of medical technology, arteriovenous blood and qi analysis is widely applied clinically. At present, three modes are mainly used for blood sampling of artery and vein in clinic: firstly, a self-filling arteriovenous blood taking needle utilizing the pressure of an arteriovenous vessel, and secondly, a piston push injection arteriovenous blood taking needle, wherein the hemostix needs two hands to operate. In addition, a common injector is adopted to replace an arteriovenous blood needle, and arteriovenous blood sampling is carried out after heparin is inhaled.

In the current blood sampling method, the injector is still used for blood sampling, and in the specific blood sampling operation, an operator may miss to push the push-pull rod back and forth, which may cause the front blood to flow back into the blood sampling tube, so that the blood sample is diluted, the test result is inaccurate, and in addition, the risk of leading the front blood to be polluted, wasting blood, causing iatrogenic anemia, or infection may exist.

Disclosure of utility model

The utility model aims to provide a blood sampling assembly which solves the problem of blood sampling pollution during blood sampling and has the effect of preventing blood backflow during blood sampling.

The technical aim of the utility model is realized by the following technical scheme: the infusion hose comprises a main pipeline communicated with a pipeline of the arteriovenous catheter, a first branch pipe, a second branch pipe and a third branch pipe are arranged at one end of the main pipeline away from the arteriovenous catheter in a bifurcation mode, a flow stopping clamp is sleeved outside Zhou Jun of the first branch pipe and the second branch pipe, a blood taking needle is arranged at one end of the first branch pipe away from the main pipeline, a threaded joint is arranged at one end of the second branch pipe away from the main pipeline, and an injector is integrally arranged at one end of the third branch pipe away from the main pipeline; the syringe includes the injection tube and cooperates the push-and-pull rod that uses with the injection tube, be provided with the silica gel blend stop of cladding section of thick bamboo wall on the injection tube outer wall axial, the lateral wall of the handle of push-and-pull rod is provided with the spacing clamp with silica gel blend stop adaptation.

According to the technical scheme, arterial blood is conveyed into the blood collection tube through the infusion hose, the flow stopping clamp can control the flow rates of liquid in the first branch tube and the second branch tube, the blood can be input into the blood collection tube through the blood collection needle arranged on the first branch tube, blood pollution is reduced by collecting the blood through the blood collection needle, and a threaded connector is arranged at one end, far away from the main pipeline, of the second branch tube and is used for being directly connected with a threaded connector of the blood collection tube; in addition, set up silica gel blend stop and the spacing clamp that the cooperation was used on the syringe, at the in-process of drawing blood in the artery, restrict the blood velocity of flow in the first branch pipe earlier, draw the syringe with front end blood earlier in, then put into blood sampling pipe in be convenient for detect and cultivate the use again, in blood sampling in-process, can not appear blood reflux in blood sampling pipe and the patient, cause blood sampling sample to pollute, influence blood detection accuracy, and after blood sampling is accomplished, rotatable syringe push-pull rod pushes back the blood in the syringe in the patient.

Preferably, an internal thread is arranged at one end of the main pipeline connected with the arteriovenous catheter.

By adopting the preferable technical scheme, the device is convenient to be communicated with the arteriovenous catheter.

Preferably, a sealing plug capable of sealing the threaded joint is arranged at the threaded joint.

By adopting the above preferred technical solution, the joint can be plugged with a sealing plug when the second branch pipe is not in use.

In summary, the utility model has the following beneficial effects: compared with the prior art, the needle is pricked into the medical rubber sheet on the vacuum blood collection tube, blood is input into the vacuum blood collection tube, so that the blood pollution in the vacuum blood collection tube is avoided, and the detection or the culture is convenient; the screwed joint arranged on the second branch pipe is convenient for being directly connected with the screwed joint of the blood collection tube. Simultaneously still be provided with silica gel blend stop and the spacing clamp that the cooperation was used on the syringe, at the in-process of drawing blood, spacing clamp is limited by silica gel blend stop can only outwards draw, can not inwards push, can not appear blood backward flow to the patient or flow into the condition in the heparin tube, when the blood sampling is accomplished, rotatable syringe push-pull rod pushes back the blood in the syringe in the patient.

Drawings

FIG. 1 is a schematic view of the overall structure of a blood collection assembly provided by the present utility model;

FIG. 2 is a schematic view of the structure of a needle in the blood collection assembly provided by the present utility model;

FIG. 3 is a schematic perspective view of a syringe in the blood collection set provided by the present utility model;

FIG. 4 is a schematic view showing the relative positions of the first branch tube and the flow stop clip in the blood collection assembly according to the present utility model.

In the figure:

10. An infusion hose; 11. a main pipe; 12. a first branch pipe; 13. a second branch pipe; 14. a third branch pipe; 15. a flow stop clip; 16. a blood taking needle;

20. A syringe; 21. a syringe; 22. a push-pull rod; 23. a silica gel barrier strip; 24. and a limiting clamp.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

In the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

The utility model is described in further detail below with reference to fig. 1-4.

In the technical scheme provided by the utility model, all medical materials are adopted.

Examples

1-4, The transfusion hose 10 comprises a main pipe 11 communicated with a pipeline of an arteriovenous catheter, a first branch pipe 12, a second branch pipe 13 and a third branch pipe 14 are arranged at one end of the main pipe 11 away from the arteriovenous catheter in a branching way, a flow stopping clamp 15 is sleeved outside Zhou Jun of the first branch pipe 12 and the second branch pipe 13, a blood taking needle 16 is arranged at one end of the first branch pipe 12 away from the main pipe 11, a threaded joint is arranged at one end of the second branch pipe 13 away from the main pipe 11, and an injector 20 is integrally arranged at one end of the third branch pipe 14 away from the main pipe 11; the injector 20 comprises an injection cylinder 21 and a push-pull rod 22 matched with the injection cylinder 21, a silica gel blocking strip 23 which is used for coating the cylinder wall is axially arranged on the outer wall of the injection cylinder 21, and a limiting clamp 24 which is matched with the silica gel blocking strip 23 is arranged on the side wall of the handle of the push-pull rod 22.

In the scheme, arterial blood is conveyed into a blood collection tube through an infusion hose 10, the flow stop clamp 15 can control the flow rate of liquid in a first branch tube 12 and a second branch tube 13, blood can be input into the blood collection tube through a blood collection needle 16 arranged on the first branch tube 12, blood pollution is reduced by collecting the blood through the blood collection needle 16, and a threaded connector is arranged at one end of the second branch tube 13, which is far away from the main pipeline 11 and is used for being directly connected with a threaded connector of the blood collection tube; in addition, the silica gel barrier strip 23 and the limiting clamp 24 which are matched with each other are arranged on the injector 20, in the arterial blood drawing process, the blood flow rate in the first branch pipe 12 is limited, front-end blood is firstly drawn into the injector 20, then the blood is input into the blood collection tube for detection and culture, in the blood collection process, the blood can not flow back into the blood collection tube and the patient body, the blood collection sample is polluted, the blood detection accuracy is affected, and after the blood collection is completed, the injector 20 can be rotated to push and pull the rod 22, and the blood in the injector 20 is pushed back into the patient body.

One end of the main pipeline 11 connected with the arteriovenous catheter is provided with an internal thread. Is convenient to be communicated with the arteriovenous catheter.

The threaded joint is provided with a sealing plug which can plug the joint. When the second branch 13 is not in use, the joint can be plugged with a sealing plug.

In summary, the utility model has the following beneficial effects: compared with the prior art, the needle is pricked into the medical rubber sheet on the vacuum blood collection tube, blood is input into the vacuum blood collection tube, so that the blood pollution in the vacuum blood collection tube is avoided, and the detection or the culture is convenient; the threaded joint arranged on the second branch pipe 13 is convenient for being directly connected with the threaded joint of the blood collection tube. Simultaneously, the silica gel barrier strip 23 and the limiting clamp 24 which are matched for use are also arranged on the syringe 20, in the blood drawing process, the limiting clamp 24 is limited by the silica gel barrier strip 23 and can only be pulled outwards, can not be pushed inwards, the condition that blood flows back into a patient or flows into a blood collection tube can not occur, and when blood collection is completed, the syringe 20 can be rotated to push and pull the rod 22, so that the blood in the syringe 20 can be pushed back into the patient.

The principle of the scheme is as follows: in the process of arterial blood drawing, a main pipeline is in threaded communication with an arterial tube, then the relative position of a flow stopping clamp and a first branch pipe is moved to control the incapability of flowing in the first branch pipe, blood at the front end of an artery is firstly sucked into a syringe, then the relative position of the flow stopping clamp and the first branch pipe is adjusted, and the arterial blood drawing is completed by penetrating a blood taking needle into a vacuum blood taking tube; when the syringe absorbs blood, due to the arrangement of the silica gel barrier strip, when the push-pull rod is pulled outwards, the limiting clamp can only move unidirectionally, the push-pull rod is limited to push inwards, and further, the blood is prevented from flowing back into a patient or flowing into a blood collection tube, and when blood collection is completed, the push-pull rod of the syringe can be rotated, and the blood in the syringe can be pushed back into the patient.

In the process of arterial blood collection, the main pipeline is connected with the arterial tube, then the relative position of the flow stopping clamp and the first branch pipe is moved, the first branch pipe is controlled to be incapable of flowing, and then the relative position of the flow stopping clamp and the second branch pipe is moved, so that the second branch pipe can smoothly flow, the threaded interface of the blood collection tube is connected with the threaded connector on the second branch pipe, arterial blood collection is carried out by using the injector, blood is collected into the blood collection tube, and arterial blood collection is completed.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a blood sampling subassembly, includes infusion hose, infusion hose (10) include with main pipe (11) of arteriovenous catheterization's pipeline intercommunication, its characterized in that, main pipe (11) keep away from the one end bifurcation of arteriovenous catheterization is provided with first branch pipe (12), second branch pipe (13) and third branch pipe (14), the outer Zhou Jun cover of first branch pipe (12) and second branch pipe (13) is equipped with and ends that flow is pressed from both sides (15), the one end that first branch pipe (12) kept away from main pipe (11) is provided with blood taking needle (16), the one end that second branch pipe (13) kept away from main pipe (11) is provided with screwed joint, the one end that third branch pipe (14) kept away from main pipe (11) is provided with syringe (20) an organic whole;

The syringe (20) comprises a syringe (21) and a push-pull rod (22) matched with the syringe (21), a silica gel barrier strip (23) coating the wall of the syringe (21) is axially arranged on the outer wall of the syringe (21), and a limit clamp (24) matched with the silica gel barrier strip (23) is arranged on the side wall of the handle of the push-pull rod (22).

2. A blood collection assembly according to claim 1, wherein the end of the main conduit (11) connected to the arteriovenous vessel is provided with an internal thread.

3. A blood collection assembly according to claim 1, wherein a sealing plug is provided at the threaded joint of the second branch (13) for sealing the joint.