Hydrops drainage and extraction device

Abstract

The utility model relates to the technical field of medical instruments, in particular to an effusion drainage and extraction device. The effusion drainage and extraction device comprises an extraction cylinder, a piston assembly, an extraction amount control assembly, a liquid inlet pipe and a liquid outlet pipeline, the extraction cylinder is communicated with one end of the liquid inlet pipe, one end of the liquid outlet pipeline is communicated with the extraction cylinder, a first valve body for controlling the liquid inlet pipe to be opened and closed is installed on the liquid inlet pipe, and a second valve body for controlling the liquid outlet pipe to be opened and closed is installed on the piston assembly. A second valve body for controlling the on-off of the liquid outlet pipeline is mounted on the liquid outlet pipeline; the piston assembly comprises a piston head, a piston rod and a wafer which are sequentially connected, a needle head is installed at the end, away from the extraction cylinder, of the liquid inlet pipe, and the piston head is installed in the extraction cylinder in a sliding mode. Due to the fact that the moving distance of the piston assembly driven by the transverse moving mechanism is adjustable, the moving distance of the piston assembly towards the outer side can be controlled according to the single extraction amount, the single extraction amount can be controlled, and the situation that a patient is hurt due to the fact that the single extraction amount is too large is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a device for draining and extracting effusion. Background Art

[0002] Pleural effusion is a common complication in cancer patients. When cancer cells infiltrate the pleural cavity and spread to the pleura, fluid will accumulate in the space between the visceral pleura and the parietal pleura, which is called pleural effusion. In pathological conditions, such as patients with advanced cancer, tumor cells spread to the pleura, causing long-term and continuous stimulation. Tumors in various parts of the body will accumulate fluid. When the amount of pleural effusion increases significantly, the body will show clinical symptoms such as shortness of breath. Therefore, it is necessary to extract and treat the fluid in the body of cancer patients in a timely manner.

[0003] Currently, extraction is performed by puncturing the cavity at the location of the effusion with a syringe. During the operation, the amount of fluid extracted needs to be monitored and controlled in real time to prevent excessive extraction at a single time from causing harm to the patient. The amount of fluid extracted is difficult to control, there is a safety risk of excessive extraction, and it is not practical. Utility Model Content

[0004] (I) The problem to be solved by the present invention is that when extracting pleural effusion by means of a syringe, it is difficult to control the amount of effusion extracted, there is a safety risk of excessive extraction, and the practicality is poor.

[0005] (II) Technical solution

[0006] A device for draining and extracting accumulated fluid, comprising an extraction cylinder, a piston assembly, an extraction volume control assembly, a liquid inlet pipe and a liquid outlet pipeline, wherein the extraction cylinder is connected to one end of the liquid inlet pipe, one end of the liquid outlet pipeline is connected to the extraction cylinder, a first valve body for controlling the opening and closing of the liquid inlet pipe is installed on the liquid inlet pipe, and a second valve body for controlling the opening and closing of the liquid outlet pipeline is installed on the liquid outlet pipeline;

[0007] The piston assembly comprises a piston head, a piston rod and a disc which are connected in sequence, a needle is installed at one end of the liquid inlet tube away from the extraction cylinder, and the piston head is slidably installed in the extraction cylinder;

[0008] The extraction volume control assembly is installed at one end of the extraction cylinder away from the liquid inlet pipe, and the extraction volume control assembly includes a transverse movement mechanism, which is used to drive the disc on the piston assembly to move along the axial direction of the extraction cylinder.

[0009] According to one embodiment of the utility model, the transverse movement mechanism includes a base, a fixed seat, a threaded rod and a moving block, the base is fixedly mounted on the extraction cylinder, and a slide groove is provided on a side of the base facing the piston assembly, two fixed seats are provided, and the two fixed seats are sequentially mounted on the base along the length direction of the base, the threaded rod is rotatably mounted between the two fixed seats, the moving block is slidably mounted on the slide groove and threadedly connected to the threaded rod, and a card groove adapted to the disc is provided on the moving block.

[0010] According to an embodiment of the utility model, the extraction volume control assembly also includes a crank mechanism, which includes a rotating disk and a handle, the rotating disk is fixedly mounted on one end of the threaded rod, and the handle is fixedly mounted on the side of the rotating disk.

[0011] According to an embodiment of the utility model, a scale is provided on a surface of the base facing the piston assembly.

[0012] According to one embodiment of the utility model, the liquid outlet pipeline includes a liquid outlet main pipe, a three-way valve and two liquid outlet branches, one end of the liquid outlet main pipe is connected to the extraction cylinder, and the other end thereof is connected to the liquid inlet of the three-way valve, and one end of the two liquid outlet branches is respectively connected to the two liquid outlets of the three-way valve.

[0013] According to an embodiment of the utility model, an extension portion is installed on the liquid inlet tube near the needle.

[0014] According to an embodiment of the utility model, a flow rate regulator is installed on the liquid inlet pipe.

[0015] According to an embodiment of the utility model, the effusion drainage and extraction device comprises two collecting bottles, the collecting bottles are used to collect the effusion flowing out of the liquid outlet branch pipe, and scale lines are provided on the surface of the collecting bottles.

[0016] Beneficial effects of the utility model:

[0017] The utility model provides a device for draining and extracting accumulated fluid, comprising an extraction cylinder, a piston assembly, an extraction volume control assembly, a liquid inlet pipe and a liquid outlet pipeline, wherein one end of the extraction cylinder is connected to the liquid inlet pipe, and one end of the liquid outlet pipeline is connected to the extraction cylinder, a first valve body for controlling its on-off is installed on the liquid inlet pipe, and a second valve body for controlling its on-off is installed on the liquid outlet pipeline; the piston assembly comprises a piston head, a piston rod and a disc connected in sequence, a needle is installed at one end of the liquid inlet pipe away from the extraction cylinder, and the piston head is slidably installed in the extraction cylinder; the extraction volume control assembly is installed at one end of the extraction cylinder away from the liquid inlet pipe, and the extraction volume control assembly comprises a transverse movement mechanism, which is used to drive the disc on the piston assembly to move along the axial direction of the extraction cylinder.

[0018] When using the fluid drainage and extraction device to extract the accumulated fluid, first make the first valve body in the open state and the second valve body in the closed state, then the medical staff uses the transverse movement mechanism to drive the piston assembly to move toward the inside of the extraction tube to exhaust the air inside the extraction tube, then close the first valve body, and the medical staff starts the puncture work. When the needle punctures the fluid accumulation position in the chest cavity, open the first valve body and use the transverse movement mechanism to drive the piston assembly to move toward the end away from the inlet tube, so that the accumulated fluid is extracted into the inlet tube and flows into the extraction tube, then close the first valve body and open the second valve body, and then use the transverse movement mechanism to drive the piston assembly to move toward the end away from the inlet tube to squeeze the accumulated fluid in the extraction tube into the outlet pipeline.

[0019] Since the distance that the piston assembly is moved by the transverse movement mechanism is adjustable, the distance that the piston assembly moves outward can be controlled according to the single extraction volume, thereby controlling the single extraction volume, avoiding harm to the patient due to excessive single extraction volume, and improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A front view provided for an embodiment of the utility model;

[0022] Figure 2 A structural diagram of an extraction volume control assembly and a piston assembly provided in an embodiment of the utility model.

[0023] Icons: 1. Extraction cylinder; 2. Liquid inlet pipe; 201. Flow rate regulator; 202. Extension; 203. Needle; 204. First valve body; 3. Liquid outlet main pipe; 301. Second valve body; 302. Three-way valve; 4. First liquid outlet branch pipe; 5. Second liquid outlet branch pipe; 6. Collecting bottle; 7. Piston assembly; 701. Piston rod; 702. Piston head; 703. Disc; 8. Extraction volume control assembly; 801. Base; 802. Fixed seat; 803. Threaded rod; 804. Moving block; 805. Slot; 806. Rotating disk; 807. Handle; 808. Scale. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1-Figure 2 As shown, an embodiment of the utility model provides a device for draining and extracting accumulated fluid, comprising an extraction cylinder 1, a piston assembly 7, an extraction volume control assembly 8, a liquid inlet pipe 2 and a liquid outlet pipeline, wherein the extraction cylinder 1 is connected to one end of the liquid inlet pipe 2, and one end of the liquid outlet pipeline is connected to the extraction cylinder 1, a first valve body 204 for controlling the on-off of the liquid inlet pipe 2 is installed, and a second valve body 301 for controlling the on-off of the liquid outlet pipeline is installed;

[0026] The piston assembly 7 comprises a piston head 702, a piston rod 701 and a disc 703 which are connected in sequence. A needle 203 is installed at one end of the liquid inlet tube 2 away from the extraction cylinder 1. The piston head 702 is slidably installed in the extraction cylinder 1.

[0027] The extraction volume control assembly 8 is installed at one end of the extraction cylinder 1 away from the liquid inlet pipe 2. The extraction volume control assembly 8 includes a transverse movement mechanism, which is used to drive the disc 703 on the piston assembly 7 to move along the axial direction of the extraction cylinder 1.

[0028] In the present embodiment, when using the effusion drainage extraction device to extract the effusion, the first valve body 204 is first opened and the second valve body 301 is closed. Then the medical staff uses the transverse movement mechanism to drive the piston assembly 7 to move toward the inside of the extraction tube 1 to exhaust the air inside the extraction tube 1. Then the first valve body 204 is closed and the medical staff starts the puncture. When the needle 203 punctures the effusion position in the chest cavity, the first valve body 204 is opened and the transverse movement mechanism is used to drive the piston assembly 7 to move toward the end away from the liquid inlet tube 2, so that the effusion is extracted into the liquid inlet tube 2 and flows into the extraction tube 1. Since the distance that the transverse movement mechanism drives the piston assembly 7 to move is adjustable, the distance that the piston assembly 7 moves toward the outside can be controlled according to the single extraction amount, so that the single extraction amount can be controlled to avoid harm to the patient due to excessive single extraction amount, thereby improving practicality. Next, the first valve body 204 is closed and the second valve body 301 is opened. The piston assembly 7 is then driven by the transverse movement mechanism to move toward the end away from the liquid inlet pipe 2 to squeeze the accumulated liquid in the extraction cylinder 1 into the liquid outlet pipeline.

[0029] As a preferred embodiment, Figure 1 and Figure 2As shown, the transverse movement mechanism includes a base 801, a fixed seat 802, a threaded rod 803 and a moving block 804, wherein the base 801 is in the shape of an elongated strip, the base 801 is fixedly installed on the right side of the extraction cylinder 1, the length direction of the base 801 is the same as the length direction of the extraction cylinder 1, a slide groove is provided on the top surface of the base 801, two fixed seats 802 are provided, the two fixed seats 802 are sequentially installed on the top surface of the base 801 along the length direction of the base 801, the threaded rod 803 is rotatably installed between the two fixed seats 802, the bottom of the moving block 804 slides in the slide groove, the moving block 804 is threadedly connected to the threaded rod 803, further, a card slot 805 adapted to the disc 703 is provided on the moving block 804, and a scale 808 is provided on the edge of the top surface of the base 801.

[0030] In this way, when extracting the accumulated fluid, the moving block 804 is driven to move to the right by rotating the screw 808. Since the disc 703 of the piston assembly 7 is stuck in the slot 805 of the moving block 804, the entire piston assembly 7 can be pulled to move to the right together. The distance moved by the moving block 804 is observed through the scale 808, so that the moving distance of the piston assembly 7 can be accurately controlled, and finally the single extraction amount can be controlled to avoid harm to the patient due to excessive single extraction amount.

[0031] As a preferred embodiment, Figure 2 As shown, the extraction amount control assembly 8 also includes a crank mechanism, which includes a rotating disk 806 and a handle 807. The rotating disk 806 is fixedly mounted on one end of the threaded rod 803 and is coaxially arranged with the threaded rod 803. The handle 807 is fixedly mounted on the edge of the right side of the rotating disk 806 and is perpendicular to the rotating disk 806. By holding the handle 807, the rotating disk 806 is driven to rotate to drive the threaded rod 803 to rotate, so as to easily drive the threaded rod 803 to rotate. In addition, the moving distance of the moving block 804 can be adjusted by controlling the number of rotations of the rotating disk 806, so as to adjust the moving distance of the piston assembly 7 and control the single extraction amount.

[0032] As an optional embodiment, the extraction volume control component 8 includes a micro motor and a controller. The output end of the micro motor is fixedly connected to one end of the threaded rod 803. The micro motor and the controller are signal-connected. The controller is installed on the surface of the extraction cylinder 1. Medical staff can send instructions to the micro motor through the controller to control the number of rotations and the speed of the threaded rod 803 during a single extraction of accumulated fluid, so as to control the moving distance of the piston assembly 7 to achieve control of the single extraction volume.

[0033] Preferably, Figure 1As shown, the liquid outlet pipeline includes a liquid outlet main pipe 3, a three-way valve 302 and two liquid outlet branches. One end of the liquid outlet main pipe 3 is connected to the extraction cylinder 1, and the other end thereof is connected to the liquid inlet of the three-way valve 302. One end of the two liquid outlet branches is respectively connected to the two liquid outlets of the three-way valve 302. The effusion drainage and extraction device also includes two collecting bottles 6. The collecting bottles 6 are used to collect the effusion flowing out of the liquid outlet branches. For the convenience of description, the two liquid outlet branches are named as the first liquid outlet branch 4 and the second liquid outlet branch 5. The same ends of the first liquid outlet branch 4 and the second liquid outlet branch 5 are respectively inserted into the two collecting bottles 6. Furthermore, scale lines are provided on the surfaces of the two collecting bottles 6 to facilitate the observation of the amount of effusion collected in the collecting bottles 6.

[0034] It should be noted that, at the beginning of the extraction, the three-way valve 302 is used to connect the liquid outlet main pipe 3 and the first liquid outlet branch pipe 4, so that the accumulated liquid in the extraction tube 1 can flow along the liquid outlet main pipe 3 and the first liquid outlet branch pipe 4 into the liquid outlet pipe 3 and the first liquid outlet branch pipe 4. Figure 1 In the collecting bottle 6 on the left side, when the collecting bottle 6 on the left side is almost full, the three-way valve 302 is used to connect the liquid outlet main pipe 3 with the second liquid outlet branch pipe 5, so that the accumulated liquid in the extraction cylinder 1 can flow along the liquid outlet main pipe 3 and the second liquid outlet branch pipe 5 into the collecting bottle 6 on the right side, so that the work of extracting the accumulated liquid can be carried out continuously.

[0035] Optional, such as Figure 1 As shown, an extension portion 202 is installed on the liquid inlet tube 2 near the needle 203, and a flow rate regulator 201 is installed on the liquid inlet tube 2.

[0036] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for draining and extracting effusion, characterized in that: The invention comprises an extraction cylinder (1), a piston assembly (7), an extraction amount control assembly (8), a liquid inlet pipe (2) and a liquid outlet pipeline, wherein the extraction cylinder (1) is connected to one end of the liquid inlet pipe (2), one end of the liquid outlet pipeline is connected to the extraction cylinder (1), a first valve body (204) for controlling the on-off of the liquid inlet pipe (2) is installed on the liquid inlet pipe (2), and a second valve body (301) for controlling the on-off of the liquid outlet pipeline is installed on the liquid outlet pipeline; The piston assembly (7) comprises a piston head (702), a piston rod (701) and a disc (703) which are connected in sequence; a needle (203) is installed at one end of the liquid inlet tube (2) away from the extraction cylinder (1); and the piston head (702) is slidably installed in the extraction cylinder (1); The extraction volume control assembly (8) is mounted on an end of the extraction cylinder (1) away from the liquid inlet pipe (2), and the extraction volume control assembly (8) comprises a transverse movement mechanism, and the transverse movement mechanism is used to drive the disc (703) on the piston assembly (7) to move along the axial direction of the extraction cylinder (1).

2. The effusion drainage and extraction device according to claim 1, characterized in that: The transverse movement mechanism comprises a base (801), a fixed seat (802), a threaded rod (803) and a moving block (804); the base (801) is fixedly mounted on the extraction cylinder (1), and a sliding groove is provided on a side of the base (801) facing the piston assembly (7); two fixed seats (802) are provided, and the two fixed seats (802) are sequentially mounted on the base (801) along the length direction of the base (801); the threaded rod (803) is rotatably mounted between the two fixed seats (802); the moving block (804) is slidably mounted on the sliding groove and is threadedly connected to the threaded rod (803); and a slot (805) adapted to the disc (703) is provided on the moving block (804).

3. The effusion drainage and extraction device according to claim 2, characterized in that: The extraction volume control assembly (8) further comprises a crank mechanism, wherein the crank mechanism comprises a rotating disk (806) and a handle (807), wherein the rotating disk (806) is fixedly mounted on one end of the threaded rod (803), and the handle (807) is fixedly mounted on a side of the rotating disk (806).

4. The effusion drainage and extraction device according to claim 2, characterized in that: A scale (808) is provided on a surface of the base (801) facing the piston assembly (7).

5. The effusion drainage and extraction device according to claim 2, characterized in that: The liquid outlet pipeline comprises a liquid outlet main pipe (3), a three-way valve (302) and two liquid outlet branch pipes, one end of the liquid outlet main pipe (3) is connected to the extraction cylinder (1), and the other end thereof is connected to the liquid inlet of the three-way valve (302), and one end of the two liquid outlet branch pipes is respectively connected to the two liquid outlets of the three-way valve (302).

6. The effusion drainage and extraction device according to claim 1, characterized in that As mentioned above, an extension portion (202) is installed on the liquid inlet tube (2) near the needle (203).

7. The effusion drainage and extraction device according to claim 1, characterized in that: A flow rate regulator (201) is installed on the liquid inlet pipe (2).

8. The effusion drainage and extraction device according to claim 5, characterized in that: The effusion drainage and extraction device comprises two collecting bottles (6), wherein the collecting bottles (6) are used to collect the effusion flowing out of the liquid outlet branch pipe, and scale lines are provided on the surface of the collecting bottles (6).

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