A drainage device for abdominal paracentesis

Abstract

This utility model relates to the field of medical devices and discloses a drainage device for abdominal paracentesis, including a syringe. A Y-shaped needle is disposed on the outer side of the syringe near its lower end. A piston plate is connected to the inner wall of the syringe via a piston. A push rod is fixedly connected to the top of the piston plate. A push plate is fixedly connected to the top of the push rod. A pull-out mechanism is provided on the outer side of the syringe and the lower end of the push plate. The pull-out mechanism includes a sleeve. The inner wall of the sleeve is fixedly connected to the outer wall of the syringe. A pressure chamber is formed on the inner wall of the sleeve. A moving rod is piston-connected to the inner wall of the pressure chamber. In this utility model, the pull-out mechanism, push rod, and push plate ensure that when medical personnel adjust the position of the syringe needle, the control block is close to the lower end of the syringe, making it easy to press the control block. Therefore, it achieves the effect of conveniently controlling the position of the syringe needle with both hands while pulling the syringe, reducing the error rate.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a drainage device for abdominal puncture. Background Technology

[0002] Abdominal paracentesis is a medical procedure that involves inserting a needle or catheter into the abdominal cavity to remove fluid (ascites) or gas from the abdominal cavity. It is commonly used to diagnose and treat a variety of abdominal diseases.

[0003] Currently, when performing paracentesis for drainage, medical staff often need to first locate the location of ascites using ultrasound. After local anesthesia, a puncture needle is inserted, and while adjusting the needle position, the syringe is pulled to determine the depth of the ascites. Once ascites is present in the syringe, a guidewire is inserted into the patient's body for subsequent placement of the drainage tube.

[0004] When inserting a puncture needle, medical staff often need to adjust both the depth and angle of the needle simultaneously to ensure rapid location of the ascites. However, for novices, the procedure can be stressful, and the syringe is positioned at the rear. When adjusting the position, pulling the syringe simultaneously forces them to control the syringe with only one hand, increasing the risk of errors and suboptimal syringe control. Therefore, a drainage device for abdominal paracentesis is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a drainage device for abdominal paracentesis, which aims to improve the problem in the prior art that it is inconvenient to adjust the position of the syringe with both hands at the same time while pulling the syringe to determine the location of ascites.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a drainage device for abdominal puncture, comprising a syringe, a Y-shaped needle tip disposed on the outer side of the syringe near the lower end, a guide wire disposed inside the Y-shaped needle tip, a piston plate connected to the inner wall of the syringe, a push rod fixedly connected to the top of the piston plate, a push plate fixedly connected to the top of the push rod, and a pull mechanism disposed together on the outer side of the syringe and the lower end of the push plate;

[0007] The pull-out mechanism includes a sleeve, the inner wall of which is fixedly connected to the outer wall of the syringe. An air pressure chamber is provided on the inner wall of the sleeve, and a moving rod is piston-connected to the inner wall of the air pressure chamber. The top end of the moving rod is fixedly connected to the bottom end of the push plate. An air control component is provided inside the sleeve below the air pressure chamber.

[0008] As a further description of the above technical solution:

[0009] The gas control assembly includes a control chamber, which is located on the inner wall of the cannula below the pressure chamber. A sliding plate is slidably connected to the inner wall of the control chamber. The end of the sliding plate near the syringe is elastically connected to the inner wall of the control chamber by a spring. A control block is fixedly connected to the end of the sliding plate away from the syringe. The outer wall of the control block is piston-connected to the inner wall of the control chamber.

[0010] As a further description of the above technical solution:

[0011] The gas control assembly also includes a rotating groove, which is formed on the inner wall of the sleeve below the control chamber. A turntable is rotatably connected to the inner wall of the rotating groove. A control groove is formed at the top of the turntable. A control strip is provided inside the control groove. The top of the control strip is fixedly connected to the bottom of the slide plate.

[0012] As a further description of the above technical solution:

[0013] The sleeve is equipped with a one-way valve inside the area near the lower part of the pressure chamber, which allows the pressure chamber to communicate with the outside.

[0014] As a further description of the above technical solution:

[0015] The number of control chambers is set to multiple, and the multiple control chambers are arranged in a circumferential array with the center of the cylindrical area at the bottom of the sleeve. The inner wall of the sleeve inside the control chambers is provided with an annular groove that connects the multiple control chambers.

[0016] As a further description of the above technical solution:

[0017] The inner wall of the sleeve located above the inner side of the control chamber has a groove that connects the annular groove to the pressure chamber.

[0018] As a further description of the above technical solution:

[0019] The syringe is colorless and transparent, and the cannula is colorless and transparent.

[0020] As a further description of the above technical solution:

[0021] The control groove is arc-shaped, the control strip is cylindrical, and the diameter of the control strip matches the width of the control groove.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by setting up an air pressure chamber, control block, control chamber, moving rod, push rod, push plate, etc., it is ensured that when medical staff adjust the position of the syringe needle, the control block is close to the lower end of the syringe, so it is easy to press the control block. Therefore, it can be convenient to control the position of the syringe needle with both hands while pulling the syringe, thus reducing the error rate.

[0024] 2. In this utility model, by setting up rotating grooves, turntables, control grooves, control bars, sliding plates, etc., it is ensured that medical staff only need to press a small number of control blocks while controlling the position of the syringe needle, so that all control blocks can move in the specified direction, thereby ensuring that the amount of controlled gas is sufficient, and achieving the effect of ensuring that the control force of the push plate can be used to extract ascites. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;

[0026] Figure 2 This is a three-dimensional cross-sectional view of the overall structure of this utility model;

[0027] Figure 3 This is a three-dimensional cross-sectional view of the sleeve and its internal structure in this utility model;

[0028] Figure 4 This is a three-dimensional cross-sectional view of the syringe, cannula, Y-shaped needle, and their internal structure in this utility model.

[0029] Figure 5 This is a three-dimensional structural diagram of a portion of the central control air assembly of this utility model.

[0030] Legend:

[0031] 1. Syringe; 2. Y-type needle; 3. Piston plate; 4. Push rod; 5. Push plate; 6. Pull-out mechanism; 7. Guide wire; 61. Sleeve; 62. Moving rod; 63. Air chamber; 64. Air control assembly; 641. Control chamber; 642. Slide plate; 643. Spring; 644. Control block; 645. Rotating groove; 646. Turntable; 647. Control groove; 648. Control strip. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 , Figure 2 and Figure 4 An embodiment of this utility model provides a drainage device for abdominal paracentesis, including a syringe 1, which is colorless and transparent. A Y-shaped needle 2 is provided on the outer side of the syringe 1 near the lower end. The syringe 1 and the Y-shaped needle 2 are detachably connected. The interface of the Y-shaped needle 2 is made of rubber. When the Y-shaped needle 2 is connected to the lower end of the syringe 1, its inner wall can fit against the outer wall of the syringe 1. A puncture needle is provided at one end of the Y-shaped needle 2. A piston plate 3 is piston-connected to the inner wall of the syringe 1. The outer wall of the piston plate 3 fits against the inner wall of the syringe 1. A push rod 4 is fixedly connected to the top of the piston plate 3. A push plate 5 is fixedly connected to the top of the push rod 4. The shape of the push plate 5 is elliptical.

[0034] Reference Figure 1 , Figure 2 and Figure 4 The syringe 1 and the lower end of the push plate 5 are jointly provided with a pull-out mechanism 6. The pull-out mechanism 6 includes a sleeve 61, which is colorless and transparent. The sleeve 61 is shaped like a cylindrical object with an elliptical top view and a cylindrical bottom. The inner wall of the sleeve 61 is fixedly connected to the outer wall of the syringe 1. An air pressure chamber 63 is opened on the inner wall of the sleeve 61. A one-way valve is provided in the area of ​​the sleeve 61 near the lower part of the air pressure chamber 63, which allows the air pressure chamber 63 to communicate with the outside. External gas can enter the one-way valve, but the gas inside the air pressure chamber 63 cannot leave through the one-way valve. A moving rod 62 is piston-connected to the inner wall of the air pressure chamber 63. The outer wall of the moving rod 62 is in contact with the inner wall of the air pressure chamber 63. By setting the air pressure, it is ensured that when the needle is in a non-fluid accumulation area, the compressibility of the gas ensures that the compressed gas will not force the tissue in the non-fluid accumulation area of ​​the patient into the needle. The top end of the moving rod 62 is fixedly connected to the bottom end of the push plate 5.

[0035] Reference Figure 3 - Figure 5Inside the sleeve 61, below the pressure chamber 63, is a gas control assembly 64. The gas control assembly 64 includes multiple control chambers 641 arranged in a circular array around the center of the cylindrical region at the bottom of the sleeve 61. An annular groove connecting the multiple control chambers 641 is formed on the inner wall of the sleeve 61 inside the control chambers 641. A groove connecting the annular groove and the pressure chamber 63 is formed on the inner wall of the sleeve 61 above the control chambers 641. This arrangement of the annular groove and the groove connecting the annular groove and the pressure chamber 63 ensures that all control chambers 641 can communicate with the pressure chamber 63. The control chamber 641 is located on the inner wall of the sleeve 61 below the pressure chamber 63. A slide plate 642 is slidably connected to the inner wall of the control chamber 641. The end of the slide plate 642 near the syringe 1 is elastically connected to the inner wall of the control chamber 641 by a spring 643. One end of the spring 643 is fixedly connected to the end of the slide plate 642 near the syringe 1, and the other end of the spring 643 is fixedly connected to the inner wall of the control chamber 641. A control block 644 is fixedly connected to the end of the slide plate 642 away from the syringe 1. The outer wall of the control block 644 is piston-connected to the inner wall of the control chamber 641, and the outer wall of the control block 644 fits against the inner wall of the control chamber 641.

[0036] Reference Figure 3 - Figure 5 The gas control assembly 64 also includes a rotating groove 645. The inner wall of the sleeve 61 between the rotating groove 645 and the control chamber 641 has a groove. The rotating groove 645 is located on the inner wall of the sleeve 61 below the control chamber 641. A turntable 646 is rotatably connected to the inner wall of the rotating groove 645. The turntable 646 is circular in shape. A control groove 647 is provided at the top of the turntable 646. The control groove 647 is arc-shaped. A control strip 648 is provided inside the control groove 647. The control strip 648 is cylindrical in shape. The shape of the control strip 648 ensures that the turntable 646 will not be obstructed during rotation, thus preventing difficulty in rotation. The diameter of the control strip 648 matches the width of the control groove 647. The top of the control strip 648 is fixedly connected to the bottom of the slide plate 642. A guide wire 7 is provided inside the Y-shaped needle 2. The guide wire 7 is used to install a soft drainage tube.

[0037] Working principle: When in use, after medical staff determine the location of ascites through B-ultrasound or color Doppler ultrasound, and perform disinfection at that location, the puncture needle at the bottom of the Y-shaped needle 2 is first inserted into the patient's body, and the position and angle of the Y-shaped needle 2 and the syringe 1 are controlled by both hands.

[0038] Because the control block 644 is close to the bottom of the syringe 1, and because the syringe 1 and the Y-type needle 2 are detachably connected, novice medical staff often habitually control the position of the syringe 1 with one hand and the position of the Y-type needle 2 with the other hand when controlling the position. While controlling the syringe 1, the medical staff can press two of the opposite control blocks 644.

[0039] During the pressing process, the control block 644 drives the slide plate 642 to move in the direction of entering the control chamber 641. Since the rotating groove 645, the control chamber 641, and the air pressure chamber 63 are all connected, but the rotating groove 645 is not connected to the outside, after the control block 644 is pressed, the gas inside the control chamber 641 can only enter the air pressure chamber 63.

[0040] Because gas is compressible, when the puncture needle does not enter the area where the ascites is located, its tip is blocked by other tissues in the patient's body, so it cannot draw in body fluid. However, when the puncture needle enters the area where the ascites is located, the air pressure causes the moving rod 62 to move upward. As the moving rod 62 moves, it also causes the push plate 5 and the push rod 4 to move upward, thereby causing the piston plate 3 to move upward, thus drawing the ascites into the syringe 1.

[0041] At this point, after the medical staff releases the control block 644, although the control block 644 can move outward under the elastic force of the spring 643, the external gas can enter the pressure chamber 63 through the one-way valve. Therefore, the movement of the control block 644 will not cause the body fluid to return to the patient's body. Thus, the medical staff can insert the guide wire 7 according to the normal procedure and perform subsequent operations.

[0042] At the same time, when medical staff press two of the control blocks 644, the control bars 648 move as the two control blocks 644 move, thereby pushing the arc surface of the control groove 647 during the movement of the control bars 648, thereby causing the turntable 646 to rotate, and then the turntable 646 drives the other control bars 648 to move after rotating, thereby ensuring that the air volume of the moving rod 62 is sufficient.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drainage device for use in laparocentesis, comprising a syringe (1), characterized in that: The syringe (1) is provided with a Y-shaped needle (2) near the lower end of the outer side. The Y-shaped needle (2) is provided with a guide wire (7). The inner wall of the syringe (1) is connected to a piston plate (3). The top end of the piston plate (3) is fixedly connected to a push rod (4). The top end of the push rod (4) is fixedly connected to a push plate (5). The syringe (1) and the lower end of the push plate (5) are provided with a pull mechanism (6). The pull-out mechanism (6) includes a sleeve (61), the inner wall of the sleeve (61) is fixedly connected to the outer wall of the syringe (1), the inner wall of the sleeve (61) is provided with a pressure chamber (63), the inner wall of the pressure chamber (63) is piston-connected to a moving rod (62), the top end of the moving rod (62) is fixedly connected to the bottom end of the push plate (5), and the sleeve (61) is provided with a gas control component (64) inside the pressure chamber (63).

2. The drainage device for coeliac puncture according to claim 1, characterized in that: The gas control assembly (64) includes a control chamber (641), which is located on the inner wall of the sleeve (61) below the pressure chamber (63). A sliding plate (642) is slidably connected to the inner wall of the control chamber (641). The end of the sliding plate (642) near the syringe (1) is elastically connected to the inner wall of the control chamber (641) by a spring (643). A control block (644) is fixedly connected to the end of the sliding plate (642) away from the syringe (1). The outer wall of the control block (644) is piston-connected to the inner wall of the control chamber (641).

3. The drainage device for laparocentesis according to claim 2, characterized in that: The gas control assembly (64) also includes a rotating groove (645), which is formed on the inner wall of the sleeve (61) below the control chamber (641). A turntable (646) is rotatably connected to the inner wall of the rotating groove (645). A control groove (647) is formed at the top of the turntable (646). A control strip (648) is provided inside the control groove (647). The top of the control strip (648) is fixedly connected to the bottom of the slide plate (642).

4. The drainage device for coeliac puncture according to claim 1, characterized in that: The sleeve (61) is provided with a one-way valve inside the area near the lower part of the pressure chamber (63) to allow the pressure chamber (63) to communicate with the outside.

5. The drainage device for laparoscopy according to claim 2, wherein: The number of control chambers (641) is set to multiple, and the multiple control chambers (641) are arranged in a circular array with the center of the cylindrical area at the bottom of the sleeve (61). The inner wall of the sleeve (61) inside the control chamber (641) is provided with an annular groove that connects the multiple control chambers (641).

6. The drainage device for laparoscopy according to claim 2, wherein: The inner wall of the sleeve (61) located above the inner side of the control chamber (641) has a groove that connects the annular groove to the pressure chamber (63).

7. The drainage device for laparoscopy according to claim 1, wherein: The syringe (1) is colorless and transparent, and the cannula (61) is colorless and transparent.

8. The drainage device for laparoscopy according to claim 3, wherein: The control groove (647) is arc-shaped, and the control strip (648) is cylindrical. The diameter of the control strip (648) matches the width of the control groove (647).

Images