A negative pressure adsorption device with detection for abdominal cavity drainage

Abstract

The application discloses a peritoneal cavity drainage negative pressure adsorption device with detection function, and relates to the field of peritoneal cavity drainage adsorption devices. The application provides a peritoneal cavity drainage negative pressure adsorption device with detection function which can keep a puncture needle stable. The peritoneal cavity drainage negative pressure adsorption device with detection function comprises a U-shaped sliding frame, a sliding plate is slidably connected to the U-shaped sliding frame, symmetrical bases are fixedly connected to the U-shaped sliding frame, a supporting frame is slidably connected to the sliding plate, a puncture needle is arranged between the supporting frame and the sliding plate, an infrared sensor is installed on the supporting frame, a screw rod is fixedly connected to the supporting frame, and a nut is threadedly connected to the screw rod. The turbidity of ascitic fluid drawn out is detected by the infrared sensor, so that the optimal puncture position is determined. The fixing of the puncture needle is completed by the supporting frame, the screw rod and the nut, the discomfort of a patient caused by movement of the puncture needle during puncture can be reduced, and local serious bleeding caused by movement of the puncture needle is prevented.

Description

Technical Field

[0001] This invention relates to the field of abdominal drainage adsorption devices, and more particularly to an abdominal drainage negative pressure adsorption device with detection capabilities. Background Technology

[0002] Ascites is fluid that abnormally accumulates in the abdominal cavity due to various reasons. Under normal circumstances, there is also a certain amount of fluid in the abdominal cavity to lubricate the organs, but when there is too much fluid, it will form ascites. The general treatment for ascites is to drain the fluid from the abdominal cavity.

[0003] In existing techniques for abscess drainage, medical staff first need to use a puncture needle to locate the fluid accumulation, perform a puncture, and extract the fluid from the area of ​​the abdomen. Then, the medical staff needs to control the puncture needle with one hand and insert a guidewire into the needle with the other, guiding the guidewire into the abdominal cavity through the puncture needle. Simultaneously, the puncture needle is withdrawn, and a skin retractor is used to widen the insertion point of the guidewire. A drainage tube is then inserted along the guidewire, and the guidewire is withdrawn. Next, a syringe is used to extract the fluid from the abdominal cavity through the drainage tube to test whether the drainage tube has been successfully inserted. Once the fluid has been successfully extracted, the medical staff can suture the skin, fix the drainage tube to prevent it from dislodging, and slowly drain the fluid from the abdomen through the drainage tube.

[0004] During the insertion of the guidewire using a puncture needle, medical staff typically perform the procedure manually. However, during this process, the medical staff's hands are suspended in the air, and the puncture needle lacks a stable point. If the medical staff's hands tremble while using the puncture needle to aspirate abdominal fluid, or if other operations are performed after the needle has entered the abdomen, causing the needle to move, it will increase the patient's discomfort. Furthermore, due to the movement of the puncture needle, it may accidentally injure other organs or tissues in the abdominal cavity, causing unnecessary damage. The movement of the puncture needle may also increase the risk of damage to blood vessels during the puncture process, leading to intra-abdominal bleeding. At the same time, it may also affect the doctor's accurate grasp of the puncture site, resulting in inaccurate puncture and missing the optimal aspiration point.

[0005] Therefore, maintaining the stability of the puncture needle during the aspiration of abdominal fluid is an important condition for performing such delicate procedures. In summary, we designed a negative pressure adsorption device for abdominal drainage that can maintain the stability of the puncture needle and has detection capabilities. Summary of the Invention

[0006] In order to overcome the shortcomings of existing technologies where the puncture needle moves due to various reasons, thus causing patient discomfort, this invention provides an abdominal drainage negative pressure adsorption device that can keep the puncture needle stable and has detection capabilities, thereby solving the problems existing in the prior art.

[0007] The technical solution of the present invention is: a negative pressure adsorption device for abdominal drainage with detection capability, comprising a U-shaped slide, a slide plate slidably connected to the U-shaped slide, a symmetrically distributed base fixed to the U-shaped slide, a support frame slidably connected to the slide plate, a puncture needle placed between the support frame and the slide plate, a screw threadedly connected to the slide plate for fixing the puncture needle, an infrared sensor installed on the support frame, a screw fixedly connected to the support frame, the screw passing through the slide plate, a nut threadedly connected to the screw, and a piston rod slidably connected to the puncture needle.

[0008] Furthermore, an abdominal drainage negative pressure adsorption device with detection capability also includes a fixing component for maintaining the stability of the puncture needle. The fixing component is disposed on the support frame. The support frame has a symmetrically distributed first fixing frame on the side near the slide plate. The first fixing frame is slidably connected to a slider. The first fixing frame is rotatably connected to a pressure plate. A first torsion spring is connected between the pressure plate and the first fixing frame.

[0009] Furthermore, the side of the slider closest to the puncture needle is an inclined surface, and the side of the pressure plate furthest from the puncture needle is a protrusion that cooperates with the slider.

[0010] Furthermore, an abdominal drainage negative pressure adsorption device with detection capability also includes a locking component for fixing the puncture needle. The locking component is disposed on the first fixing frame and includes symmetrically distributed second fixing frames. The symmetrically distributed second fixing frames are respectively fixed to adjacent first fixing frames. The second fixing frames are slidably connected to pull rods, and the symmetrically distributed pull rods are slidably connected to each other.

[0011] Furthermore, a protrusion is provided on the side of the pull rod near the first fixing frame, the protrusion being used to hold the slider.

[0012] Furthermore, an abdominal drainage negative pressure adsorption device with detection capability also includes a clamping assembly to further ensure stability. The clamping assembly is disposed on the U-shaped slide and includes symmetrically distributed pressure frames. The symmetrically distributed pressure frames are slidably connected to the U-shaped slide. Each side of the symmetrically distributed pressure frames that is close to each other is rotatably connected to a rotating rod. A second spring is connected between the pressure frames and the U-shaped slide.

[0013] Furthermore, an abdominal drainage negative pressure adsorption device with detection capability also includes an anti-vibration component to prevent the puncture needle from shaking. The anti-vibration component is disposed on the support frame and includes symmetrically distributed rotating plates. The symmetrically distributed rotating plates are rotatably connected to the support frame. Friction blocks are fixedly connected to the rotating plates, and a second torsion spring is connected between the rotating plates and the support frame.

[0014] Furthermore, the friction block is made of rubber material with deformation capability.

[0015] Furthermore, an abdominal drainage negative pressure adsorption device with detection capability also includes a support component that can adjust the height to adapt to human bodies of different sizes. The support component is disposed on the base and includes symmetrically distributed base plates. The symmetrically distributed base plates are slidably connected to the base. A wedge-shaped frame is fixedly connected to the base plate, and a third spring connects the wedge-shaped frame to the base.

[0016] Furthermore, the wedge-shaped frame has an inclined surface on the side near the pressure frame, and the pressure frame passes through the U-shaped slide and is pressed into the adjacent wedge-shaped frame.

[0017] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention uses an infrared sensor to detect the turbidity of the aspirated ascites fluid to determine the optimal puncture location. The puncture needle is fixed using a support frame, screw, and nut, reducing patient discomfort caused by needle movement during puncture and preventing severe local bleeding due to needle movement. The support frame and pressure plate restrict the puncture needle during aspiration of abdominal fluid, ensuring stability when the piston rod is pulled, thus preventing needle movement and patient discomfort. The pull rod locks the slider, preventing inward movement and limiting the rotation of the pressure plate, further ensuring needle stability when the piston rod is pulled upward. The rotating rod clamps the patient's abdomen on both sides, maintaining stability between the patient and the device. A second spring ensures the pressure frame and rotating rod are firmly against the patient's abdomen. When the puncture needle moves to the underside of the support frame, it compresses the rotating plate, causing the second torsion spring to deform. The rotating plate rotates the friction block to press against the side wall of the puncture needle, preventing needle vibration. When the patient's abdomen is large, it means that the relative height of the patient's abdomen is high. At this time, the rotating rod will squeeze the pressure frame to move outward, and the pressure frame will squeeze the wedge frame to move downward, so that the third spring is compressed. The wedge frame drives the base plate to move downward, thereby adjusting the support height of the U-shaped carriage. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the puncture needle and support frame components of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the puncture needle and piston rod components of the present invention.

[0021] Figure 4 This is a schematic diagram of the first three-dimensional structure of the fixing component of the present invention.

[0022] Figure 5This is a schematic diagram of a second three-dimensional structure of the fixing component of the present invention.

[0023] Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the fixing component of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the locking component of the present invention.

[0025] Figure 8 This is a partial cross-sectional perspective view of the three-dimensional structure of the locking component of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the clamping component and support component of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the image stabilization component of the present invention.

[0028] Reference numerals: 1_U-shaped carriage, 2_slide plate, 3_support frame, 4_puncture needle, 5_screw, 6_infrared sensor, 7_screw, 8_base, 9_nut, 10_piston rod, 11_first fixed frame, 12_slider, 13_pressure plate, 14_first torsion spring, 15_second fixed frame, 16_pull rod, 17_connecting plate, 18_pressure frame, 19_rotating rod, 20_second spring, 21_rotating plate, 22_friction block, 23_second torsion spring, 24_base plate, 25_wedge frame, 26_third spring. Detailed Implementation

[0029] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.

[0030] Example 1: A negative pressure adsorption device for abdominal drainage with detection capability, see below. Figure 1 , Figure 2 and Figure 3As shown, the device includes a U-shaped slide 1, on which a slide plate 2 is slidably connected. Symmetrically distributed bases 8 are fixed to the left and right sides of the U-shaped slide 1. A support frame 3 is slidably connected to the slide plate 2. A puncture needle 4 is placed between the support frame 3 and the slide plate 2. A screw 5 for fixing the puncture needle 4 is threadedly connected to the front side of the slide plate 2. An infrared sensor 6 is installed on the rear side of the support frame 3. The infrared sensor 6 is used to detect the turbidity of the abdominal fluid aspirated from the puncture needle 4. The support frame 3 has a right... A screw 7 is fixedly connected to the side, and the upper part of the screw 7 passes through the slide plate 2. A nut 9 is threadedly connected to the upper part of the screw 7. The nut 9 is located on the upper part of the slide plate 2. The screw 7 and the nut 9 cooperate to limit the support frame 3, so that the support frame 3 cannot move further downward after the nut 9 is tightened, thereby limiting the support frame 3 and the puncture needle 4. A piston rod 10 is slidably connected to the puncture needle 4. The piston rod 10 is used to cooperate with the puncture needle 4 to aspirate abdominal fluid.

[0031] When it is necessary to use the puncture needle 4 to aspirate peritoneal fluid, the U-shaped slide 1 is placed on the patient's abdomen, so that the base 8 is supported on the bed. The medical staff moves the slide 2 to the puncture point, and then turns the screw 5 to lock the slide 2 so that it no longer moves. Then, the medical staff can insert the puncture needle 4 into the slide 2 and pass it through the support frame 3. After the puncture needle 4 is placed in the support frame 3, the medical staff inserts the puncture needle 4 into the patient's abdomen. By moving the puncture needle 4, the optimal drainage position for aspirating abdominal fluid is determined. The movement of the puncture needle 4 causes the support frame 3 to move downward, causing the screw 7 to move downward. Then, the medical staff pulls the piston rod 10 upward to aspirate the abdominal fluid. Since the fluid is closer to the abdominal tissues, the aspiration rate is lower. The higher the turbidity of the ascites fluid, the better. Therefore, the infrared sensor 6 is used to detect the turbidity of the extracted ascites fluid to determine the optimal puncture location. After determining the location, the medical staff screws on the nut 9 to fix the screw 7, preventing the support frame 3 and the puncture needle 4 from sliding further down into the abdomen. Since the puncture needle 4 is fixed by the support frame 3 and will not move freely, the medical staff can insert the guide wire into the patient's body through the puncture needle 4. Fixing the puncture needle 4 can reduce the patient's discomfort and prevent the puncture needle 4 from moving and causing serious local bleeding. After the guide wire is inserted, since the nut 9 only restricts the downward movement of the screw 7, the medical staff can then move the puncture needle 4 and the support frame 3 upward, allowing the puncture needle 4 to exit the abdomen, thus completing the puncture procedure.

[0032] Example 2: Based on Example 1, see... Figure 4 , Figure 5 and Figure 6As shown, an abdominal drainage negative pressure adsorption device with detection capability further includes a fixing component for stabilizing the puncture needle 4. The fixing component is disposed on the support frame 3. The support frame 3 has a symmetrically distributed first fixing frame 11 on the side near the slide plate 2. The lower front and rear sides of the first fixing frame 11 have sliding grooves. A slider 12 is slidably connected in the sliding groove of the first fixing frame 11. The front and rear sides of the slider 12 have square rods that extend out of the first fixing frame 11. The side of the slider 12 near the puncture needle 4 is inclined, and the side of the slider 12 away from the puncture needle 4 is protruding. A pressure plate 13 is rotatably connected to the upper side of the first fixing frame 11. The side of the pressure plate 13 away from the puncture needle 4 is a protrusion that cooperates with the slider 12. A first torsion spring 14 is connected between the pressure plate 13 and the first fixing frame 11. The puncture needle 4 squeezes the slider 12 to move outward, causing the slider 12 to squeeze the pressure plate 13 to rotate, thereby causing the pressure plate 13 to rotate and press the upper side of the puncture needle 4.

[0033] Since medical staff need to hold the puncture needle 4 in place when moving the piston rod 10 to aspirate abdominal fluid, the puncture needle 4 may move during this process. Therefore, when the puncture needle 4 moves downward into the support frame 3, it squeezes the slider 12 to move outward, causing the slider 12 to squeeze the pressure plate 13 to rotate. The upper side of the pressure plate 13 flips inward to press the puncture needle 4, and the first torsion spring 14 deforms. At this time, the puncture needle 4 is fixed and cannot move upward. Medical staff can pull the piston rod 10 upward to aspirate abdominal fluid. The support frame 3 and the pressure plate 13 restrict the puncture needle 4 when aspirating abdominal fluid, so that the puncture needle 4 can remain stable when the medical staff pulls the piston rod 10, thereby preventing the puncture needle 4 from moving and causing patient discomfort.

[0034] See Figure 7 and Figure 8As shown, an abdominal drainage negative pressure adsorption device with detection capability further includes a locking assembly for fixing the puncture needle 4. The locking assembly is disposed on the first fixing frame 11 and includes symmetrically distributed second fixing frames 15. The second fixing frame 15 is a combination of two side plates and a square rod in the middle. The symmetrically distributed second fixing frames 15 are respectively fixed to adjacent first fixing frames 11. The second fixing frames 15 are slidably connected to a pull rod 16. The lower part of the pull rod 16 has a strip-shaped groove, which is longer than the square rod of the second fixing frame 15. The symmetrically distributed pull rods 16 are slidably connected to a connecting plate 17. The damping force between the pull rod 16 and the connecting plate 17 is relatively large. A protrusion is provided on the side of the pull rod 16 near the first fixing frame 11. The protrusion is located on the sliding... On the lower side of block 12, a protrusion is used to hold the slider 12. When the piston rod 10 moves upward, the medical staff simultaneously drive the connecting plate 17 to move upward. Under the action of a large damping force, since the pull rod 16 is not blocked, the pull rod 16 and the connecting plate 17 move upward together, thereby driving the protrusion on the pull rod 16 to move upward. This causes the protrusion in the pull rod 16 to be stuck inside the square rod of the slider 12, preventing the slider 12 from moving inward to reset. When the pull rod 16 moves upward to the bottom of the strip groove and contacts the square rod of the second fixing frame 15, the pull rod 16 will be squeezed by the square rod of the second fixing frame 15, thus preventing it from moving upward. Subsequently, when the connecting plate 17 continues to move upward, it cannot drive the pull rod 16 to continue moving upward.

[0035] To further ensure the stability of the puncture needle 4 when the piston rod 10 is withdrawn, medical personnel can simultaneously move the connecting plate 17 upward when pulling the piston rod 10 upward. The connecting plate 17 will first move the pull rod 16 upward, causing the protrusion of the pull rod 16 to lock inside the slider 12, preventing the slider 12 from moving inward and resetting, thereby restricting the rotation of the pressure plate 13. This allows the pressure plate 13 to be firmly locked onto the puncture needle 4, limiting the puncture needle 4 and further preventing medical personnel from... When the medical personnel pull the piston rod 10, the puncture needle 4 moves. Although the damping between the pull rod 16 and the connecting plate 17 is relatively large, they are still in a sliding connection. Therefore, when the pull rod 16 can no longer move upward, the connecting plate 17 will move upward relative to the pull rod 16. In this way, the pull rod 16 locks the slider 12, preventing the slider 12 from moving inward, thereby limiting the rotation of the pressure plate 13 and further ensuring the stability of the puncture needle 4 when the piston rod 10 is pulled upward.

[0036] Example 3: Based on Example 2, see... Figure 9As shown, an abdominal drainage negative pressure adsorption device with detection capability further includes a clamping assembly to ensure stability. The clamping assembly is disposed on the U-shaped slide 1 and includes symmetrically distributed pressure frames 18. The symmetrically distributed pressure frames 18 are slidably connected to the U-shaped slide 1. The pressure frames 18 are T-shaped. Each side of the symmetrically distributed pressure frames 18 that is close to each other is rotatably connected to a rotating rod 19. There are four rotating rods 19. The rotating rods 19 are arc-shaped to facilitate fitting to both sides of the patient's abdomen. A second spring 20 is connected between the pressure frames 18 and the U-shaped slide 1.

[0037] The device is held in place by the rotating rod 19 on both sides of the patient's abdomen to maintain stability between the patient and the device. The second spring 20 allows the pressure frame 18 and the rotating rod 19 to fit snugly against both sides of the patient's abdomen.

[0038] See Figure 10 As shown, an abdominal drainage negative pressure adsorption device with detection capability further includes an anti-vibration component to prevent the puncture needle 4 from shaking. The anti-vibration component is disposed on the support frame 3 and includes symmetrically distributed rotating plates 21. The symmetrically distributed rotating plates 21 are rotatably connected to the support frame 3. When the rotating plates 21 are in the normal state, there is a certain distance between them and the support frame 3. A friction block 22 is fixedly connected to the rotating plate 21. When the friction block 22 is in the normal state, it is located at the vertical projection position of the side of the puncture needle 4. A second torsion spring 23 is connected between the rotating plate 21 and the support frame 3. The friction block 22 has... The rubber material has deformation capacity. When the puncture needle 4 moves downward and presses the rotating plate 21, the friction block 22 is located on the side of the puncture needle 4 and is in contact with the side of the puncture needle 4. The puncture needle 4 presses the rotating plate 21, so that the rotating plate 21 is pressed against the support frame 3. The rotation of the rotating plate 21 causes the friction block 22 to rotate in the direction of the puncture needle 4, so that the friction block 22 is only in contact with the side wall of the puncture needle 4. Through the restriction of the friction block 22 and the buffering capacity of the second torsion spring 23, the puncture needle 4 is buffered to prevent the puncture needle 4 from shaking.

[0039] When the puncture needle 4 moves to the lower side of the support frame 3, it will squeeze the rotating plate 21 to rotate, causing the second torsion spring 23 to deform. The rotation of the rotating plate 21 drives the friction block 22 to rotate to fit tightly against the side wall of the puncture needle 4, preventing the puncture needle 4 from shaking.

[0040] See Figure 9As shown, an abdominal drainage negative pressure adsorption device with detection capability also includes a support component that can adjust the height to adapt to different body sizes. The support component is set on the base 8 and includes symmetrically distributed base plates 24. The symmetrically distributed base plates 24 are slidably connected to the base 8. The bottom area of ​​the base plates 24 is larger than the bottom area of ​​the base 8, thereby strengthening the support force by expanding the support range. A wedge frame 25 is fixedly connected to the base plate 24. A third spring 26 is connected between the wedge frame 25 and the base 8. The side of the wedge frame 25 near the pressure frame 18 is inclined. The pressure frame 18 passes through the U-shaped slide 1 and is pressed and engaged with the adjacent wedge frame 25.

[0041] When the patient's abdomen is large, it means that the relative height of the patient's abdomen is high. At this time, the rotating rod 19 will squeeze the pressure frame 18 to move outward. The pressure frame 18 will squeeze the wedge frame 25 to move downward, so that the third spring 26 is compressed. The wedge frame 25 will drive the base plate 24 to move downward, thereby adjusting the support height of the U-shaped slide 1.

[0042] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A negative pressure adsorption device for abdominal drainage with detection capability, characterized in that, The device includes a U-shaped slide (1), a slide plate (2) slidably connected to the U-shaped slide (1), a symmetrically distributed base (8) fixed to the U-shaped slide (1), a support frame (3) slidably connected to the slide plate (2), a puncture needle (4) placed between the support frame (3) and the slide plate (2), a screw (5) for fixing the puncture needle (4) threadedly connected to the slide plate (2), an infrared sensor (6) installed on the support frame (3), a screw (7) fixedly connected to the support frame (3), the screw (7) passing through the slide plate (2), a nut (9) threadedly connected to the screw (7), and a piston rod (10) slidably connected to the puncture needle (4). It also includes a fixing component for keeping the puncture needle (4) stable. The fixing component is disposed on the support frame (3). The support frame (3) is provided with a first fixing frame (11) symmetrically distributed on the side near the slide plate (2). The first fixing frame (11) is slidably connected to a slider (12). The first fixing frame (11) is rotatably connected to a pressure plate (13). A first torsion spring (14) is connected between the pressure plate (13) and the first fixing frame (11). The slider (12) has a sloping side near the puncture needle (4), and the pressure plate (13) has a protrusion that cooperates with the slider (12) on the side away from the puncture needle (4). It also includes a support component that can adjust the height to adapt to people of different sizes. The support component is set on the base (8). The support component includes a symmetrically distributed base plate (24). The symmetrically distributed base plate (24) is slidably connected to the base (8). A wedge frame (25) is fixed on the base plate (24). A third spring (26) is connected between the wedge frame (25) and the base (8). The wedge frame (25) has an inclined side near the pressure frame (18), and the pressure frame (18) passes through the U-shaped slide (1) and is pressed together with the adjacent wedge frame (25).

2. The abdominal drainage negative pressure adsorption device with detection capability according to claim 1, characterized in that, It also includes a locking component for fixing the puncture needle (4), the locking component is disposed on the first fixing frame (11), the locking component includes symmetrically distributed second fixing frames (15), the symmetrically distributed second fixing frames (15) are respectively fixed to adjacent first fixing frames (11), the second fixing frames (15) are slidably connected to pull rods (16), and the symmetrically distributed pull rods (16) are slidably connected to each other by connecting plates (17).

3. The abdominal drainage negative pressure adsorption device with detection capability according to claim 2, characterized in that, The pull rod (16) has a protrusion on the side near the first fixing frame (11), which is used to hold the slider (12).

4. The abdominal drainage negative pressure adsorption device with detection capability according to claim 3, characterized in that, It also includes a clamping assembly to further ensure stability. The clamping assembly is disposed on the U-shaped slide (1). The clamping assembly includes symmetrically distributed pressure frames (18). The symmetrically distributed pressure frames (18) are slidably connected to the U-shaped slide (1). The sides of the symmetrically distributed pressure frames (18) that are close to each other are rotatably connected to rotating rods (19). A second spring (20) is connected between the pressure frames (18) and the U-shaped slide (1).

5. The abdominal drainage negative pressure adsorption device with detection capability according to claim 4, characterized in that, It also includes a vibration damping component to prevent the puncture needle (4) from shaking. The vibration damping component is disposed on the support frame (3). The vibration damping component includes symmetrically distributed rotating plates (21). The symmetrically distributed rotating plates (21) are rotatably connected to the support frame (3). A friction block (22) is fixed on the rotating plate (21). A second torsion spring (23) is connected between the rotating plate (21) and the support frame (3).

6. The abdominal drainage negative pressure adsorption device with detection capability according to claim 5, characterized in that, The friction block (22) is made of rubber with deformation capability.

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