A tee sampling device connectable to a hemodialysis machine

Abstract

The utility model relates to medical instrument technical field, specifically disclose a kind of three-way sampling device of connectable hemodialysis machine, comprising: main three-way catheter, the side wall of main three-way catheter is provided with connecting hose, the output end of connecting hose is further provided with sampling structure;First connecting piece, the first connecting piece is arranged in one end of main three-way catheter, for connecting main three-way catheter with dialyzer;Second connecting piece, the second connecting piece is arranged in the other end of main three-way catheter, for connecting main three-way catheter with dialysis tube, the utility model is connected together by fixed sleeve through the first connecting piece and second connecting piece being arranged, main three-way catheter and dialyzer are connected together by installation cap, main three-way catheter and dialysis tube are connected together, so that the three-way sampling device of connectable hemodialysis machine is more convenient and fast when connecting dialysis machine and external dialysis pipeline.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a three-way sampling device that can be connected to a hemodialysis machine. Background Technology

[0002] With the advancement of technology, once intractable blood diseases now have corresponding treatment methods. By drawing blood from the body to an external machine for screening, removing internal toxins and impurities, and cleaning it, the blood is returned to the body, allowing the patient's blood to return to a relatively normal state. After a period of operation, hemodialysis machines need to be checked, and this requires sampling. To avoid the inconvenience of disassembling the instrument during the check, a sampling tube is usually installed at the sampling point, making it convenient to collect samples for testing. Therefore, it is particularly important to propose a three-way sampling device that can be connected to the hemodialysis machine.

[0003] Chinese Utility Model Patent Application No. CN213191621U discloses a dialysate sampling device for a hemodialysis machine, relating to the field of medical device technology. This utility model includes a hemodialysis tubing, a three-way shunt, a first tubing, a second tubing, a one-way valve, a sampling port, and a shut-off switch. The three-way shunt consists of a main tube and a side branch tube. Both ends of the hemodialysis tubing are connected to the main tube of the three-way shunt. A one-way valve is installed on the first tubing. A shut-off switch is installed on the second tubing. A sampling port is installed at one end of the second tubing. The sampling port matches the opening of the first tubing. This utility model, by controlling the shut-off switch, ensures the normal operation of the hemodialysis machine during sampling without affecting patient treatment; it facilitates sampling, allowing for easy sampling by a single person; and the sampling device can be automatically sterilized with the machine, achieving good sterilization results, thus meeting the sampling requirements.

[0004] While the hemodialysis machine is convenient for sampling and disinfection, it still has the following drawbacks in actual use: the device is relatively cumbersome to install and is not convenient for multiple short-term samplings. Each time a sample is taken, the sampling port and the one-way valve connection need to be opened, and the presence of the one-way valve makes the device more expensive. Utility Model Content

[0005] The purpose of this invention is to provide a three-way sampling device that can be connected to a hemodialysis machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a three-way sampling device that can be connected to a hemodialysis machine, comprising: a main three-way catheter, wherein a connecting hose is provided on the side wall of the main three-way catheter, and a sampling structure is provided at the output end of the connecting hose;

[0007] The first connector is disposed at one end of the main three-way catheter and is used to connect the main three-way catheter to the dialyzer.

[0008] The second connector is located at the other end of the main three-way catheter and is used to connect the main three-way catheter to the dialysis catheter.

[0009] A clamping element, disposed outside the connecting hose, is used to compress the connecting hose to impede blood flow within it.

[0010] Preferably, the main tee conduit and the connecting hose are designed to be interlocked, wherein the connecting hose is connected to the side branch of the main tee conduit.

[0011] Preferably, the first connector includes a fixing sleeve fixedly disposed at one end of the main tee conduit and an internal thread formed on the inner wall of the fixing sleeve.

[0012] Preferably, the second connector includes a mounting cap disposed at the other end of the main tee conduit and a ball bearing elastic element movably disposed inside the mounting cap.

[0013] Preferably, the connection ends of the main tee conduit, the fixing sleeve, and the mounting cap are all provided with sealing rings.

[0014] Preferably, the clamping member includes a clip and clamping blocks symmetrically arranged on the inner walls of both sides of the clip, and the side wall of the clip has a through-hole for inserting a connecting hose.

[0015] Preferably, the sampling structure includes a sample storage tube disposed at the output end of the connecting hose and a heparin cap disposed at the end of the sample storage tube away from the connecting hose.

[0016] This utility model has at least the following beneficial effects:

[0017] 1. By using the first and second connectors, the main three-way catheter and the dialyzer are connected together by the fixing sleeve, and the main three-way catheter and the dialysis tubing are connected together by the mounting cap, making it more convenient and faster for this three-way sampling device that can be connected to a hemodialysis machine to connect the dialysis machine and the external dialysis tubing.

[0018] 2. When blood needs to be collected, the clamping device is used to adjust the flow and cut-off of blood inside the connecting tube by adjusting the clamp, so that the blood enters the sample collection tube and cannot flow back. At this time, the blood inside the sample collection tube is removed by the heparin cap, so as not to affect the blood inside the main three-way catheter. It is clean and hygienic. Moreover, due to the simple structure of the clamping device, the cost of the device is low. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a side sectional view of the first and second connectors of this utility model.

[0021] Figure 3 This is a partial enlarged cross-sectional view of the second connector of this utility model;

[0022] Figure 4 This is a partial view of the connecting hose clamp of this utility model;

[0023] Figure 5 This is a diagram showing the opening and closing of the clamping component of this utility model.

[0024] In the diagram: 1. Main tee conduit; 2. First connector; 201. Fixing sleeve; 202. Internal thread; 3. Connecting hose; 4. Clamping component; 401. Clamp; 402. Clamping block; 403. Through port; 5. Sampling structure; 501. Sample storage tube; 502. Heparin cap; 6. Second connector; 601. Mounting cap; 602. Ball bearing elastic component. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution:

[0027] Example 1,

[0028] A three-way sampling device that can be connected to a hemodialysis machine includes:

[0029] The main three-way catheter 1 has a connecting hose 3 on its side wall, and a sampling structure 5 is provided at the output end of the connecting hose 3; a first connector 2 is provided at one end of the main three-way catheter 1 for connecting the main three-way catheter 1 to the dialyzer; and a second connector 6 is provided at the other end of the main three-way catheter 1 for connecting the main three-way catheter 1 to the dialysis tube.

[0030] The main tee conduit 1 and the connecting hose 3 are designed to be interlocked. The connecting hose 3 is connected to the side branch of the main tee conduit 1. The first connecting member 2 includes a fixing sleeve 201 fixedly installed at one end of the main tee conduit 1 and an internal thread 202 opened on the inner side wall of the fixing sleeve 201.

[0031] In addition, the second connector 6 includes a mounting cap 601 disposed at the other end of the main tee conduit 1 and a ball elastic element 602 movably disposed inside the mounting cap 601. The connection ends of the main tee conduit 1 with the fixing sleeve 201 and the mounting cap 601 are all provided with sealing rings.

[0032] With the first connector 2 and the second connector 6, and because one end of the fixing sleeve 201 is provided with an internal thread 202, the internal thread 202 connects the dialyzer interface and the main three-way conduit 1 together. The balls inside the ball elastic element 602 connect the main three-way conduit 1 and the external dialysis tubing together. The fixing sleeve 201 connects the main three-way conduit 1 and the dialyzer together, and the mounting cap 601 connects the main three-way conduit 1 and the dialysis tubing together. This makes it more convenient and faster for the three-way sampling device that can be connected to the hemodialysis machine to connect the dialysis machine and the external dialysis tubing.

[0033] According to the above embodiments, Embodiment Two

[0034] It should be noted that the clamping member 4 is located outside the connecting hose 3 and is used to squeeze the connecting hose 3 to prevent blood from flowing in the connecting hose 3.

[0035] The clamping member 4 includes a clip 401 and clamping blocks 402 symmetrically arranged on the inner walls of both sides of the clip 401, and the side wall of the clip 401 is provided with a through-hole 403 for inserting the connecting hose 3.

[0036] The sampling structure 5 includes a sample storage tube 501 disposed at the output end of the connecting hose 3 and a heparin cap 502 disposed at the end of the sample storage tube 501 away from the connecting hose 3.

[0037] Under normal circumstances, the clamp 401 will squeeze and hold the connecting hose 3 through the clamp 402, which can cut off the flow of blood into the sample collection tube 501. When blood collection is required, the flow and cut-off of blood inside the connecting hose 3 can be adjusted by adjusting the clamp 401, and the connecting hose 3 can be released to allow blood to flow normally into the sample collection tube 501. When the sample collection tube 501 is full of blood, the clamp 401 is adjusted again, and the clamp 402 clamps the connecting hose 3 again. Then, one end of the sample collection tube 501 is disinfected and connected to the output port of the connecting hose 3 to collect an appropriate amount of blood. After adjusting the clamp 401, the needle is inserted into the heparin cap 502, and the blood inside the sample collection tube 501 is taken out through the heparin cap 502. This makes the sampling device easy to operate and clean to use each time a sample is taken, and it will not affect the blood inside the main three-way catheter 1. Furthermore, due to the simple structure of the clamp 4, the cost of the device is also low.

[0038] 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.

[0039] 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 three-way sampling device that can be connected to a hemodialysis machine, comprising: A main three-way conduit (1) is provided with a connecting hose (3) on its side wall, and a sampling structure (5) is provided at the output end of the connecting hose (3); Its characteristics are: The first connector (2) is disposed at one end of the main three-way conduit (1) and is used to connect the main three-way conduit (1) to the dialyzer. The second connector (6) is disposed at the other end of the main three-way catheter (1) and is used to connect the main three-way catheter (1) to the dialysis tube; A clamp (4) is disposed outside the connecting hose (3) and is used to squeeze the connecting hose (3) to prevent blood from flowing in the connecting hose (3).

2. The three-way sampling device for connecting to a hemodialysis machine according to claim 1, characterized in that: The main three-way conduit (1) and the connecting hose (3) are designed to be interlocked, wherein the connecting hose (3) is connected to the side branch of the main three-way conduit (1).

3. The three-way sampling device for connecting to a hemodialysis machine according to claim 1, characterized in that: The first connector (2) includes a fixing sleeve (201) fixedly disposed on one end of the main three-way conduit (1) and an internal thread (202) formed on the inner side wall of the fixing sleeve (201).

4. A three-way sampling device for connecting to a hemodialysis machine according to claim 3, characterized in that: The second connector (6) includes a mounting cap (601) disposed at the other end of the main tee conduit (1) and a ball bearing elastic element (602) movably disposed inside the mounting cap (601).

5. A three-way sampling device for connecting to a hemodialysis machine according to claim 4, characterized in that: The connection ends of the main tee conduit (1), the fixing sleeve (201), and the mounting cap (601) are all equipped with sealing rings.

6. A three-way sampling device for connecting to a hemodialysis machine according to claim 1, characterized in that: The clamping member (4) includes a clamp (401) and clamping blocks (402) symmetrically arranged on the inner walls of both sides of the clamp (401), and the side wall of the clamp (401) is provided with a through port (403) for inserting the connecting hose (3).

7. A three-way sampling device for connecting to a hemodialysis machine according to claim 1, characterized in that: The sampling structure (5) includes a sample storage tube (501) disposed at the output end of the connecting hose (3) and a heparin cap (502) disposed at the end of the sample storage tube (501) away from the connecting hose (3).

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