A catheter for facilitating multiple blood sampling and infusion

Abstract

The utility model discloses a kind of catheter for multiple blood sampling and transfusion, specifically related to medical instrument technical field, comprising: multi-way valve, short extension pipe, blood sampling puncture seat and flow stop clamp;The one port of multi-way valve is detachably connected with short extension pipe, and other ports of multi-way valve are all connected with infusion hose;Blood sampling puncture seat is fixedly connected in the middle of short extension pipe, and flow stop clamp is movably sleeved on short extension pipe, and flow stop clamp is located between the end of short extension pipe away from multi-way valve and blood sampling puncture seat.This utility model is directly drained to blood sampling tube by setting blood sampling puncture seat, and it is convenient to use, avoid the damage and pain caused by percutaneous puncture vein, arterial blood sampling, so that the patient has more comfortable clinical experience with venous catheter or arterial catheter, especially suitable for infants and children;For the patient with difficult peripheral vein display, medical staff can operate more conveniently and accurately.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a catheter that facilitates multiple blood collections and infusions. Background Technology

[0002] In clinical blood collection, to avoid damage and pain to patients caused by direct percutaneous puncture of veins or arteries, venous catheters or arterial catheters are often used to collect blood samples, reducing the number of punctures during hospitalization and improving patient comfort. However, blood collection using existing venous catheters or arterial catheters requires drawing blood into a syringe before collection.

[0003] However, in practical use, existing venous or arterial catheters require drawing blood into a syringe for blood collection. If the blood volume is large, the syringe needs to be used repeatedly to draw blood and then inject the blood from the syringe into the blood collection tube, which increases the risk of catheter contamination. If the blood stays in the syringe for a long time, it is prone to coagulation, which may result in unqualified blood samples. If the blood collection process is time-consuming, there is a risk of tube blockage. Therefore, in order to improve blood collection efficiency, a catheter that is easy to draw blood and infuse multiple times is proposed as a further improvement. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a catheter that facilitates multiple blood collections and infusions, so as to solve the problems mentioned in the background art.

[0005] If the term "catheter" does not specifically refer to venous catheters or arterial catheters, then both are included.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a catheter that facilitates multiple blood collections and infusions, comprising: a multi-port valve, a short extension tube, a blood collection puncture seat, and a flow-stopping clamp;

[0007] One port of the multi-way valve is detachably connected to a short extension tube, and the other ports of the multi-way valve are connected to an infusion tubing.

[0008] The blood collection puncture seat is fixedly connected to the middle of the short extension tube, and the flow stop clamp is movably sleeved on the short extension tube, with the flow stop clamp located between the end of the short extension tube away from the multi-way valve and the blood collection puncture seat.

[0009] Furthermore, the blood collection puncture station includes: a base that is sealed and connected to the short extension tube as an integral part, and a silicone diaphragm that can be repeatedly punctured and closes itself. The base has a T-shaped cavity that communicates with the inside of the short extension tube. The silicone diaphragm is fixedly connected to the inner wall of the top of the T-shaped cavity. A protective cap is threaded onto the outer surface of the top of the base. The top of the protective cap has a blood collection hole for puncture by the blood collection needle.

[0010] Furthermore, one port of the multi-way valve is connected to a short extension tube via a Luer connector.

[0011] Furthermore, the internal volume of the short extension tube does not exceed 3 ml.

[0012] Furthermore, both the short extension tube and the base are made of transparent material.

[0013] Furthermore, protective caps are installed at both the end of the multi-way valve and the end of the short extension tube.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. Compared with existing technologies, this invention, by setting a blood collection puncture seat, facilitates repeated punctures of the blood collection needle, thereby directly draining blood into the blood collection tube. This makes it convenient to use and avoids the damage and pain caused by percutaneous venous or arterial blood collection, providing a more comfortable clinical experience for patients with venous or arterial catheters, especially suitable for infants and children. For patients with difficulty in visualizing peripheral veins, medical staff can operate more conveniently and accurately. This invention has a wide range of applications, and can be connected to almost all venous catheters, arterial catheters, blood purification circulation lines, and ECMO circulation lines for blood collection; therefore, it has a good market potential.

[0016] 2. Compared with existing technologies, the structure of transcatheter blood collection is optimized by setting up a short extension tube, a multi-way valve, and a blood collection puncture seat. By using the blood collection puncture seat, the problems of unqualified blood samples, catheter blockage, and long time consumption caused by direct transcatheter blood collection are avoided: that is, blood flows directly from the catheter through the blood collection puncture seat and blood collection needle into the blood collection tube, which greatly simplifies the routine steps of transcatheter blood collection, saves time, reduces the risk of unqualified blood samples due to blood clotting, and reduces the risk of catheter contamination and blockage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a cross-sectional structural diagram of the blood collection puncture seat and short extension tube of this utility model.

[0019] The attached figures are labeled as follows:

[0020] 1. Multi-way valve;

[0021] 2. Short extension tube;

[0022] 3. Blood collection puncture seat;

[0023] 31. Base; 311. T-shaped cavity;

[0024] 32. Silicone diaphragm;

[0025] 33. Protective cap; 331. Blood collection port;

[0026] 4. Flow stop clamp;

[0027] 5. Luer connector;

[0028] 6. Protective cap. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] If the term "catheter" does not specifically refer to venous catheters or arterial catheters, then both are included.

[0031] As attached Figure 1 and attached Figure 2 The catheter shown is designed for multiple blood collections and infusions, and includes: a multi-port valve 1, a short extension tube 2, a blood collection puncture seat 3, and a flow stop clamp 4;

[0032] One port of the multi-port valve 1 is detachably connected to the short extension tube 2, and the other ports of the multi-port valve 1 are connected to the infusion tubing.

[0033] The blood collection puncture seat 3 is fixedly connected to the middle of the short extension tube 2, and the flow stop clamp 4 is movably sleeved on the short extension tube 2. The flow stop clamp 4 is located between the end of the short extension tube 2 away from the multi-way valve 1 and the blood collection puncture seat 3.

[0034] In this invention, a multi-way valve 1, a blood collection puncture seat 3, a flow stop clamp 4, and a short extension tube 2 are combined; the blood collection puncture seat 3 is fully utilized to facilitate repeated punctures of the blood collection needle to collect blood, thereby improving blood collection efficiency.

[0035] If the multi-port valve 1 is a three-port valve, one end of the three-port valve is connected to the infusion tubing on the infusion set, and the other end of the three-port valve is connected to a catheter pre-installed on the patient's blood vessel; thus, controlling the three-port valve can establish a blood collection pathway or an infusion pathway.

[0036] 1. Access: The catheter and short extension tube are connected, which can be used for blood collection or infusion;

[0037] II. Access: The infusion tubing on the infusion set is connected to the catheter for infusion;

[0038] If this invention is used for intravenous catheters, it facilitates patients switching between intravenous infusion and intravenous blood collection; if this invention is used for arterial catheters, it facilitates switching between arterial blood pressure monitoring and arterial blood collection.

[0039] Among them, the short extension tube 2 serves as a carrier for the blood collection puncture seat 3 and the flow stop clamp 4, which can assist in completing blood collection, or can be used directly as a passage for infusion.

[0040] Among them, the blood collection puncture seat 3 facilitates repeated punctures by the blood collection needle, thereby directly draining blood into the blood collection tube; the structure optimizes the process of transcatheter blood collection, as detailed below:

[0041] A standard catheter blood collection procedure requires at least the following steps:

[0042] S1: Disconnect the infusion tubing or sealing tube from the catheter and insert the syringe into the catheter;

[0043] S2: The syringe draws blood mixed with sealing fluid or medication from the catheter.

[0044] S3: Replace with a new syringe, insert the catheter, and draw out the blood; discard the syringe from S2.

[0045] S4: Disconnect the syringe from the catheter, reconnect the infusion tubing, or replace the sealing tubing;

[0046] S5: Connect the syringe in S4 to the blood collection tube and inject the drawn blood into the blood collection tube;

[0047] The blood collection method of this utility model only requires the following steps:

[0048] A1: Disconnect the infusion tubing or sealing tube from the short extension tube 2, and insert the syringe into the short extension tube 2;

[0049] A2: After the syringe draws blood mixed with sealing fluid or medication from the short extension tube 2, the stop clamp 4 should promptly clamp and close the short extension tube 2 to prevent the blood mixed with sealing fluid or medication from flowing back into the short extension tube 2 and making the blood sample unqualified.

[0050] A3: Insert the blood collection needle directly into the blood collection puncture seat 3 to perform the blood collection operation, and pull out the blood collection needle after the blood collection is completed;

[0051] A4: Discard the syringe from A2; replace it with a syringe containing physiological saline, and flush and seal the short extension tube 2;

[0052] It can be seen that this utility model simplifies the conventional steps of transcatheter blood collection, saves time, reduces the risk of unqualified specimens due to blood clotting, reduces the risk of catheter contamination and blockage, and is convenient to use.

[0053] In a preferred embodiment, as shown in the appendix Figure 1 and attached Figure 2As shown, the blood collection puncture station 3 includes: a base 31 that is sealed and connected to the short extension tube 2 as a whole, and a silicone diaphragm 32 that can be repeatedly punctured and closes itself. The base 31 has a T-shaped cavity 311 that communicates with the inside of the short extension tube 2. The silicone diaphragm 32 is fixedly connected to the inner wall of the top of the T-shaped cavity 311. A protective cover 33 is threaded onto the outer surface of the top of the base 31. The top of the protective cover 33 has a blood collection hole 331 for puncturing the blood collection needle, so that the blood collection needle used in regular use can smoothly puncture the silicone diaphragm 32 through the blood collection hole 331, thereby facilitating blood collection.

[0054] In a preferred embodiment, as shown in the appendix Figure 1 and attached Figure 2 As shown, one port of the multi-way valve 1 is connected to the short extension pipe 2 via a Luer connector 5 to facilitate the connection between the multi-way valve 1 and the short extension pipe 2.

[0055] In a preferred embodiment, as shown in the appendix Figure 1 and attached Figure 2 As shown, the volume inside the short extension tube 2 does not exceed 3ml; this is to ensure that the syringe draws at least 3ml each time before drawing blood mixed with sealing solution or medication, thereby ensuring that the blood in the short extension tube 2 is qualified blood.

[0056] In a preferred embodiment, as shown in the appendix Figure 1 and attached Figure 2 As shown, both the short extension tube 2 and the base 31 are made of transparent material to facilitate observation by medical staff.

[0057] In a preferred embodiment, as shown in the appendix Figure 1 and attached Figure 2 As shown, protective caps 6 are installed at the ends of the multi-way valve 1 and the short extension pipe 2 to keep the ends hygienic.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A catheter that facilitates multiple blood collections and infusions, characterized in that: include: Multi-port valve (1), short extension tube (2), blood collection puncture seat (3) and flow stop clamp (4); One port of the multi-way valve (1) is detachably connected to the short extension tube (2), and the other ports of the multi-way valve (1) are connected to the infusion tubing. The blood collection puncture seat (3) is fixedly connected to the middle part of the short extension tube (2), and the flow stop clamp (4) is movably sleeved on the short extension tube (2). The flow stop clamp (4) is located between the end of the short extension tube (2) away from the multi-way valve (1) and the blood collection puncture seat (3).

2. The catheter for facilitating multiple blood collections and infusions according to claim 1, characterized in that: The blood collection puncture station (3) includes: a base (31) that is sealed and connected to the short extension tube (2) as an integral part, and a silicone diaphragm (32) that can be repeatedly punctured and closes itself. The base (31) has a T-shaped cavity (311) that communicates with the inside of the short extension tube (2). The silicone diaphragm (32) is fixedly connected to the inner wall of the top of the T-shaped cavity (311). A protective cover (33) is threaded onto the outer surface of the top of the base (31). A blood collection hole (331) for puncture by a blood collection needle is opened on the top of the protective cover (33).

3. The catheter for facilitating multiple blood collections and infusions according to claim 1, characterized in that: One port of the multi-way valve (1) is connected to the short extension tube (2) via a Luer connector (5).

4. The catheter for facilitating multiple blood collections and infusions according to claim 1, characterized in that: The volume inside the short extension tube (2) does not exceed 3 ml.

5. The catheter for facilitating multiple blood collections and infusions according to claim 2, characterized in that: The materials of the short extension tube (2) and the base (31) are both transparent.

6. The catheter for facilitating multiple blood collections and infusions according to claim 1, characterized in that: Protective caps (6) are installed at the ends of the multi-way valve (1) and the short extension tube (2).

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