Seepage-proof extraction assisting device for peritoneal effusion puncture
By designing an auxiliary device for paracentesis to prevent leakage, the device utilizes a traction component to expand the outer diameter of the puncture tube, a blocking component to seal the gap at the puncture site, and a sealing component to prevent leakage, thus solving the problem of puncture tube leakage and achieving a stable puncture and extraction effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANDONG QINGDAO HOSPITAL OF INTEGRATED TRADITIONAL & WESTERN MEDICINE
- Filing Date
- 2026-03-18
- Publication Date
- 2026-04-21
AI Technical Summary
During paracentesis, the radial contraction of the puncture tube under negative pressure during fluid aspiration increases the gap between the outer wall of the puncture tube and the puncture hole in the abdominal wall, causing leakage of fluid into the abdominal cavity and affecting the puncture and aspiration operation.
An auxiliary device for preventing leakage during paracentesis was designed, comprising a traction component, a blocking component, and a sealing component. The traction component expands the outer diameter of the puncture tube, the blocking component seals the puncture site gap, and the sealing component prevents leakage.
It effectively reduces the chance of fluid leakage during puncture, ensures normal puncture and extraction operations, and improves the reliability and efficiency of the operation.
Smart Images
Figure CN121891091A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of peritoneal effusion puncture technology, specifically to an auxiliary device for preventing leakage during peritoneal effusion puncture and extraction. Background Technology
[0002] Paracentesis is a minimally invasive diagnostic and treatment procedure commonly used in general surgery, gastroenterology, and emergency medicine. It involves inserting a special needle through the abdominal wall into the abdominal cavity under aseptic conditions to extract excess fluid (ascites) for testing, decompression, and to administer intraperitoneal medications via the puncture channel. It is primarily used for the etiological diagnosis and symptomatic treatment of ascites. The procedure is simple, minimally invasive, and widely used in clinical practice.
[0003] During the puncture and aspiration of ascites, when an external aspiration device is used to apply negative pressure to the puncture tube, the tube will radially contract under the negative pressure, reducing its outer diameter. This leads to the formation of an annular gap between the outer wall of the puncture tube and the puncture hole in the abdominal wall. Under the pressure within the abdominal cavity, the ascites will seep outward along this annular gap, causing leakage at the puncture site and affecting the puncture and aspiration operation. To address this, we propose an auxiliary device for preventing leakage during puncture and aspiration of ascites. Summary of the Invention
[0004] The purpose of this invention is to provide an auxiliary device for paracentesis to prevent leakage, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary device for paracentesis to prevent leakage, comprising a puncture tube for paracentesis drainage of ascites, wherein the outer side of the puncture tube is provided with graduation lines for puncture depth identification, and further comprising: A traction and pulling component is disposed on the outside of the puncture tube to assist in traction and pulling of the puncture tube. An installation component for assisting the installation and connection of the traction and pulling component is disposed between the traction and pulling component and the puncture site. The traction and pulling component includes a fan-shaped plate. An arc-shaped groove is opened on the side of the fan-shaped plate facing the puncture tube. A first adhesive tape for adhering to the outside of the puncture tube is embedded in the arc-shaped groove. A transmission component, mounted on a traction and pulling component, is used to drive a sector plate so that the first adhesive strip on the sector plate abuts against the puncture tube, and pulls the outside of the puncture tube through reverse transmission. The traction and pulling component is provided with a drive component for driving the transmission component. In addition, a plugging component is provided on the traction and pulling assembly to prevent leakage and blockage, the plugging component being provided with a sealing component for sealing against the puncture tube.
[0006] Preferably, the traction and pulling assembly includes an annular cover, which is sleeved on the outside of the puncture tube. The mounting assembly is disposed on the annular cover, and the sector plate is disposed inside the annular cover. A telescopic assembly for assisting the telescopic connection of the sector plate is disposed between the annular cover and the sector plate. Multiple sets of sector plates are disposed, and the multiple sets of sector plates are arranged in a circular array inside the annular cover.
[0007] Preferably, the plugging assembly includes a plugging ring disposed on one side of the annular cover, the plugging ring being concentrically disposed with the annular cover, the front side of the plugging ring being provided with a conical surface for plugging the gap between the puncture tube and the puncture site, the sealing assembly being disposed on the plugging ring, and an inflation assembly for inflating the sealing assembly being disposed between the plugging ring and the annular cover.
[0008] Preferably, the sealing assembly includes an annular mounting groove formed inside the clogging ring, and an annular airbag for sealing against the outside of the puncture tube is installed inside the annular mounting groove.
[0009] Preferably, multiple sets of the inflation assembly are arranged in a ring array between the annular cover and the blocking ring. The inflation assembly includes a piston cylinder fixed to the blocking ring. One end of the piston cylinder communicates with the interior of the annular airbag. A push rod is slidably connected to the piston cylinder. One end of the push rod is fixed to the annular cover. The other end of the push rod is located inside the piston cylinder and is fixed with a piston plate. The piston plate and the interior of the piston cylinder are matched with each other. A spring is sleeved on the outside of the push rod. The two ends of the spring abut against the outside of the annular cover and the piston cylinder, respectively.
[0010] Preferably, the transmission assembly includes a drive ring disposed inside the annular cover, and a rotating assembly for auxiliary rotational connection is disposed between the drive ring and the annular cover. The drive ring has multiple sets of inclined grooves, and each set of inclined grooves is matched with each set of sector plates. A transmission pin is slidably connected to the inclined groove, and one end of the transmission pin is fixed to the sector plate.
[0011] Preferably, the drive assembly includes a worm gear ring fixed to one side of the drive ring, the worm gear ring being concentrically arranged with the drive ring, a drive shaft being rotatably connected to the annular cover, a worm being fixed on the drive shaft, the worm being meshed with the worm gear ring, and one end of the drive shaft being located outside the annular cover and fixed with a drive pin for auxiliary drive.
[0012] Preferably, the telescopic assembly includes multiple sets of sleeves fixed inside the annular cover, with sliding rods slidably connected to the sleeves, and one end of the sliding rods being fixed to the sector plate.
[0013] Preferably, the rotating assembly includes an annular groove formed on the outside of the drive ring, a rotating ring rotatably connected inside the annular groove, the rotating ring being fixed inside the annular cover, and the annular groove, the rotating ring, the drive ring, and the annular cover being concentrically arranged.
[0014] Preferably, the installation assembly includes multiple sets of connecting straps installed on the outside of the annular cover, the connecting straps being embedded with a second adhesive tape for attaching to the puncture site.
[0015] Compared with the prior art, the beneficial effects of the present invention are: During the peritoneal fluid aspiration procedure of this invention, the cooperation of components such as the traction and pulling component, the blocking component, and the sealing component reduces the probability of internal fluid seeping out from the annular gap of the puncture site during the puncture process, thus ensuring a normal puncture and aspiration operation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a schematic diagram of the installation component structure of the present invention; Figure 3 This is a schematic diagram of the blocking process of the blocking component of the present invention; Figure 4 This is a schematic diagram of the blocking component, sealing component, and inflation component of the present invention; Figure 5 This is a schematic diagram of the internal structure of the annular cover of the present invention; Figure 6 This is a schematic diagram showing the positional relationship between the sector plate and the annular cover of the present invention; Figure 7 This is a schematic diagram showing the positional relationship between the traction assembly, the telescopic assembly, and the drive ring of the present invention; Figure 8 This is a schematic diagram of the drive component structure of the present invention; Figure 9 This is a schematic diagram showing the movement direction of each group of sector plates after the transmission component of the present invention is driven; Figure 10 This is a schematic diagram of the process of the sector plate pulling the outside of the puncture tube according to the present invention.
[0017] In the diagram: 1-Piercing tube; 201-Annular cover; 202-Fan-shaped plate; 203-Arc groove; 204-First adhesive tape; 301-Sleeve; 302-Sliding rod; 401-Drive ring; 402-Inclined groove; 403-Transmission pin; 501-Worm gear ring; 502-Drive shaft; 503-Worm; 504-Drive pin; 601-Annular groove; 602-Rotating ring; 701-Connecting tape; 702-Second adhesive tape; 801-Blocking ring; 802-Conical surface; 901-Annular mounting groove; 902-Annular airbag; 1001-Piston cylinder; 1002-Push rod; 1003-Piston plate; 1004-Spring. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1
[0019] Please see Figures 1-10 The figure shows an auxiliary device for preventing leakage during paracentesis of ascites, including a puncture tube 1 for paracentesis drainage of ascites, and a scale line for identifying the puncture depth on the outside of the puncture tube 1. It should be noted here that during the paracentesis procedure, one end of the puncture tube 1 is punctured to the designated location in the abdominal cavity. In this application, the puncture principle and procedure of the puncture tube 1 are known technologies and will not be elaborated on here. Also includes: A traction and pulling component is disposed on the outside of the puncture tube 1 to assist in traction and pulling of the puncture tube 1. An installation component for assisting the installation and connection of the traction and pulling component is disposed between the traction and pulling component and the puncture site. The traction and pulling component includes a fan-shaped plate 202. An arc-shaped groove 203 is opened on the side of the fan-shaped plate 202 facing the puncture tube 1. A first adhesive tape 204 for adhering to the outside of the puncture tube 1 is embedded in the arc-shaped groove 203. A transmission component is provided on the traction and pulling component for driving the sector plate 202, so that the first adhesive tape 204 on the sector plate 202 abuts against the puncture tube 1, and pulls the outside of the puncture tube 1 through reverse transmission. The traction and pulling component is provided with a drive component for driving the transmission component. And, a plugging component is provided on the traction assembly to prevent leakage and blockage, and the plugging component is provided with a sealing component for sealing against the puncture tube 1. It should be noted that during the paracentesis procedure, the traction, plugging, and sealing components work together to reduce the chance of internal fluid leaking out from the annular gap at the puncture site, thus ensuring a normal puncture and aspiration operation.
[0020] Preferably, the traction and pulling assembly includes an annular cover 201, which is sleeved on the outside of the puncture tube 1. An installation assembly is disposed on the annular cover 201, and a sector plate 202 is disposed inside the annular cover 201. A telescopic assembly for assisting the telescopic connection of the sector plate 202 is provided between the annular cover 201 and the sector plate 202. Multiple sets of sector plates 202 are provided, and the multiple sets of sector plates 202 are arranged in a ring array inside the annular cover 201. It should be noted here that: through transmission, the first adhesive strip 204 on the arc groove 203 is pressed against and adhered to the outside of the puncture tube 1. After adhesion, through reverse rotation, the force of each group of fan-shaped plates 202 is applied and they move away from each other. Because the first adhesive strip 204 on the fan-shaped plate 202 is pressed against and adhered to the outside of the puncture tube 1, the movement of each group of fan-shaped plates 202 away from each other pulls and stretches the outside of the puncture tube 1, expanding the outer diameter of the puncture tube 1 towards the puncture site. Additionally, it is worth noting that the puncture tube 1 itself is tough. The specific material composition of the puncture tube 1 is known in this application and will not be elaborated here. The first adhesive tape 204 is a conventional adhesive component, and its working principle and structural composition are known in this application and will not be elaborated here.
[0021] Preferably, the plugging assembly includes a plugging ring 801 disposed on one side of the annular cover 201. The plugging ring 801 is concentrically disposed with the annular cover 201. A conical surface 802 for plugging the gap between the puncture tube 1 and the puncture port is disposed on the front side of the plugging ring 801. A sealing assembly is disposed on the plugging ring 801. An inflation assembly for inflating the sealing assembly is disposed between the plugging ring 801 and the annular cover 201. It should be noted here that after the puncture is completed, the annular cover 201 is placed on the outside of the puncture tube 1 and pushed toward the skin puncture site. During the pushing process, the blocking ring 801 on one side of the annular cover 201 moves toward the puncture site. During the movement, the conical surface 802 on the blocking ring 801 is inserted into the annular gap between the puncture site and the puncture tube 1. Through the insertion and abutment, the gap between the puncture site and the puncture tube 1 during the puncture process is sealed.
[0022] Preferably, the sealing assembly includes an annular mounting groove 901 formed inside the plugging ring 801, and an annular airbag 902 for sealing against the outside of the puncture tube 1 is installed inside the annular mounting groove 901; multiple sets of inflation assemblies are arranged in annular array between the annular cover 201 and the plugging ring 801. The inflation assembly includes a piston cylinder 1001 fixed on the plugging ring 801. One end of the piston cylinder 1001 communicates with the inside of the annular airbag 902. A push rod 1002 is slidably connected to the piston cylinder 1001. One end of the push rod 1002 is fixed to the annular cover 201. The other end of the push rod 1002 is located inside the piston cylinder 1001 and is fixed with a piston plate 1003. The piston plate 1003 is matched with the inside of the piston cylinder 1001. A spring 1004 is sleeved on the outside of the push rod 1002. The two ends of the spring 1004 abut against the outside of the annular cover 201 and the piston cylinder 1001, respectively. It should be noted here that after the conical surface 802 on the blocking ring 801 abuts against the puncture port, the continued pushing action on the annular cover 201 and the abutment and limiting action of the puncture port against the blocking ring 801 cause the annular cover 201 to retract relative to the blocking ring 801. During the movement, each set of push rods 1002 pushes each set of piston plates 1003 to move towards the annular airbag 902 inside each set of piston cylinders 1001. During the movement, some of the gas inside the piston cylinder 1001 is squeezed into the annular airbag 902, inflating the inside of the annular airbag 902. During the inflation process, the annular airbag 902 expands under the action of internal pressure and its inner wall abuts against the outer side of the puncture tube 1, sealing the blocking ring 801 and the puncture tube 1. Additionally, it is worth noting that the annular airbag 902 is pre-filled with gas to facilitate faster and more sensitive inflation during subsequent inflation.
[0023] Preferably, the transmission assembly includes a drive ring 401 disposed inside the annular cover 201, a rotating assembly for auxiliary rotational connection is disposed between the drive ring 401 and the annular cover 201, the drive ring 401 is provided with multiple sets of inclined grooves 402, and each set of inclined grooves 402 is respectively matched with each set of sector plates 202, and a transmission pin 403 is slidably connected to the inclined groove 402, one end of the transmission pin 403 is fixed to the sector plate 202; It should be noted here that: through the driving component, the driven ring 401 rotates inside the annular cover 201 after being subjected to force. During the rotation of the driven ring 401, through the interaction between each set of inclined grooves 402 and each set of transmission pins 403, and the connection between the transmission pins 403 and the sector plates 202, each set of sector plates 202 is subjected to force and moves. During the movement of the sector plates 202, through the sliding guidance effect of each set of sleeves 301 and each set of sliding rods 302 on the sector plates 202 after being subjected to force, each set of sector plates 202 after being subjected to force moves toward or away from the puncture tube 1.
[0024] Preferably, the drive assembly includes a worm gear ring 501 fixed to one side of the drive ring 401, the worm gear ring 501 being concentrically arranged with the drive ring 401, a drive shaft 502 being rotatably connected to the annular cover 201, a worm 503 being fixed on the drive shaft 502, the worm 503 being meshed with the worm gear ring 501, and one end of the drive shaft 502 being located outside the annular cover 201 and fixed with a drive pin 504 for auxiliary drive; It should be noted here that: the drive pin 504 causes the drive shaft 502 and the worm 503 on the drive shaft 502 to rotate. During the rotation of the worm 503, the drive ring 401 is subjected to force and moves through the meshing transmission between the worm 503 and the worm wheel ring 501. Additionally, it is worth noting that the meshing transmission between the worm 503 and the worm wheel ring 501 enables self-locking after transmission, ensuring the maintenance of the state after transmission.
[0025] Preferably, the telescopic assembly includes multiple sets of sleeves 301 fixed inside the annular cover 201, with slide rods 302 slidably connected to the sleeves 301, and one end of the slide rods 302 fixed to the sector plate 202; It should be noted here that multiple sets of sleeves 301 and slide rods 302 are used to assist in the extension and retraction of the sector plate 202 after being subjected to force.
[0026] Preferably, the rotating assembly includes an annular groove 601 formed on the outer side of the drive ring 401, a rotating ring 602 rotatably connected inside the annular groove 601, the rotating ring 602 being fixed inside the annular cover 201, and the annular groove 601, the rotating ring 602, the drive ring 401 and the annular cover 201 being concentrically arranged. It should be noted here that the annular groove 601 and the rotating ring 602 facilitate the rotation of the auxiliary drive ring 401 after it is subjected to force.
[0027] Preferably, the mounting assembly includes multiple sets of connecting straps 701 mounted on the outside of the annular cover 201, and the connecting straps 701 are embedded with a second adhesive tape 702 for attaching to the puncture site. It should be noted here that: the annular cover 201 is placed on the outside of the puncture tube 1 and pushed toward the skin puncture site. During the pushing process, the second adhesive tape 702 on each set of connecting straps 701 is attached to the skin around the puncture site, thus completing the installation of the annular cover 201 on the outside of the puncture site. Additionally, it is worth noting that the second adhesive tape 702 is a conventional adhesive component, and its working principle and structural composition are well-known technologies in this application, so they will not be described in detail here.
[0028] This solution includes a paracentesis device for preventing leakage during puncture, comprising the following steps: During the paracentesis procedure, one end of the puncture tube 1 is inserted into the designated location in the abdominal cavity. After the puncture is completed, the annular cover 201 is placed on the outside of the puncture tube 1 and pushed toward the skin puncture site. During the pushing process, the blocking ring 801 on one side of the annular cover 201 moves toward the puncture site. During the movement, the conical surface 802 on the blocking ring 801 is inserted into the annular gap between the puncture site and the puncture tube 1. Through the insertion and abutment, the gap between the puncture site and the puncture tube 1 during the puncture process is sealed. In addition, after the conical surface 802 on the clogging ring 801 abuts against the puncture port, the annular cover 201 continues to be pushed and the puncture port abuts against the clogging ring 801, causing the annular cover 201 to contract relative to the clogging ring 801. During the movement, each set of push rods 1002 pushes each set of piston plates 1003 to move towards the annular airbag 902 inside each set of piston cylinders 1001. During the movement, some of the gas inside the piston cylinder 1001 is squeezed into the annular airbag 902, inflating the inside of the annular airbag 902. During the inflation, the annular airbag 902 expands under the action of internal pressure and its inner wall abuts against the outside of the puncture tube 1, sealing the clogging ring 801 and the puncture tube 1. Through the blocking and sealing effects, the probability of internal fluid seeping out from the annular gap of the puncture port during the puncture process is reduced, ensuring normal puncture and extraction operations. In addition, after sealing the puncture site, the second adhesive tape 702 on each set of connecting straps 701 is attached to the skin around the puncture site, completing the installation of the annular cover 201 on the outside of the puncture site. After the annular cover 201 is installed, the drive shaft 502 and the worm gear 503 on the drive shaft 502 are rotated by the drive pin 504. During the rotation of the worm gear 503, the drive ring 401 is subjected to force and moves through the meshing transmission between the worm gear 503 and the worm wheel ring 501. During the movement of the drive ring 401, it moves through the annular groove 601 and the rotating ring. The rotational connection of 602 causes the driven ring 401 to rotate inside the annular cover 201 after being subjected to force. During the rotation of the driven ring 401, through the interaction between each set of inclined grooves 402 and each set of transmission pins 403, and the connection between the transmission pins 403 and the sector plates 202, each set of sector plates 202 is subjected to force and moves. During the movement of the sector plates 202, through the sliding guidance of each set of sleeves 301 and each set of slide rods 302 on the sector plates 202 after being subjected to force, the sector plates 202 after being subjected to force move toward the puncture tube 1 (see...). Figure 9 Through the movement of each group of fan-shaped plates 202, the first adhesive tape 204 on the arc-shaped groove 203 is pressed against and adhered to the outside of the puncture tube 1 (see...). Figure 10 After adhesion, the drive pin 504 drives the drive shaft 502 to rotate in the opposite direction. During the reverse rotation, the drive assembly and transmission assembly transmit the force, causing the force on each group of sector plates 202 to move away from each other. Because the first adhesive tape 204 on the sector plate 202 is adhered to the outside of the puncture tube 1, the movement of each group of sector plates 202 away from each other pulls the outside of the puncture tube 1. The puncture tube 1 itself is tough, expanding the outer diameter of the puncture tube 1 towards the puncture port. This prevents the puncture tube 1 from radially contracting due to internal pressure during the aspiration process, further reducing the probability of internal fluid seeping out from the annular gap of the puncture port during the puncture process, and ensuring normal puncture and aspiration operations.
[0029] 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.
[0030] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A paracentesis device for preventing leakage during ascites puncture, comprising: A puncture tube (1) for paracentesis drainage of ascites, wherein the outer side of the puncture tube (1) is provided with a scale line for puncture depth identification; Its characteristic is that it further includes: A traction and pulling component is provided on the outside of the puncture tube (1) to assist in traction and pulling of the puncture tube (1). An installation component for assisting the installation and connection of the traction and pulling component is provided between the traction and pulling component and the puncture port. The traction and pulling component includes a fan-shaped plate (202). An arc-shaped groove (203) is provided on the side of the fan-shaped plate (202) facing the puncture tube (1). A first adhesive tape (204) for adhering to the outside of the puncture tube (1) is embedded in the arc-shaped groove (203). A transmission component is provided on the traction and pulling component for driving the sector plate (202) so that the first adhesive tape (204) on the sector plate (202) abuts against the puncture tube (1) and pulls the outside of the puncture tube (1) through reverse transmission. The traction and pulling component is provided with a driving component for driving the transmission component. In addition, a plugging component is provided on the traction assembly to prevent leakage and blockage, the plugging component being provided with a sealing component for sealing against the puncture tube (1).
2. The auxiliary device for preventing leakage during paracentesis of abdominal effusion according to claim 1, characterized in that: The traction and pulling assembly includes an annular cover (201), which is sleeved on the outside of the puncture tube (1). The mounting assembly is disposed on the annular cover (201). The sector plate (202) is disposed inside the annular cover (201). A telescopic assembly for assisting the telescopic connection of the sector plate (202) is provided between the annular cover (201) and the sector plate (202). Multiple sets of sector plates (202) are provided, and the multiple sets of sector plates (202) are arranged in a ring array inside the annular cover (201).
3. The auxiliary device for preventing leakage during paracentesis of abdominal effusion according to claim 2, characterized in that: The plugging assembly includes a plugging ring (801) disposed on one side of the annular cover (201). The plugging ring (801) is concentrically disposed with the annular cover (201). The front side of the plugging ring (801) is provided with a conical surface (802) for plugging the gap between the puncture tube (1) and the puncture site. The sealing assembly is disposed on the plugging ring (801). An inflation assembly for inflating the sealing assembly is disposed between the plugging ring (801) and the annular cover (201).
4. The auxiliary device for preventing leakage during paracentesis of abdominal effusion according to claim 3, characterized in that: The sealing assembly includes an annular mounting groove (901) formed inside the plugging ring (801), and an annular airbag (902) for sealing against the outside of the puncture tube (1) is installed inside the annular mounting groove (901).
5. The auxiliary device for preventing leakage during paracentesis of abdominal effusion according to claim 4, characterized in that: The inflation assembly is arranged in a ring array between the annular cover (201) and the blocking ring (801). The inflation assembly includes a piston cylinder (1001) fixed on the blocking ring (801). One end of the piston cylinder (1001) is connected to the interior of the annular airbag (902). A push rod (1002) is slidably connected to the piston cylinder (1001). One end of the push rod (1002) is fixed to the annular cover (201). The other end of the push rod (1002) is located inside the piston cylinder (1001) and is fixed with a piston plate (1003). The piston plate (1003) is matched with the interior of the piston cylinder (1001). A spring (1004) is sleeved on the outside of the push rod (1002). The two ends of the spring (1004) are respectively abutted against the outside of the annular cover (201) and the piston cylinder (1001).
6. The auxiliary device for preventing leakage during paracentesis of abdominal effusion according to claim 2, characterized in that: The transmission assembly includes a drive ring (401) disposed inside the annular cover (201). A rotating assembly for auxiliary rotational connection is provided between the drive ring (401) and the annular cover (201). Multiple sets of inclined grooves (402) are provided on the drive ring (401), and each set of inclined grooves (402) is matched with each set of sector plates (202). A transmission pin (403) is slidably connected on the inclined groove (402), and one end of the transmission pin (403) is fixed to the sector plate (202).
7. The auxiliary device for preventing leakage during paracentesis of abdominal effusion according to claim 6, characterized in that: The drive assembly includes a worm gear ring (501) fixed to one side of the drive ring (401), the worm gear ring (501) and the drive ring (401) being concentrically arranged, a drive shaft (502) being rotatably connected to the annular cover (201), a worm (503) being fixed on the drive shaft (502), the worm (503) and the worm gear ring (501) being meshed with each other, and one end of the drive shaft (502) being located outside the annular cover (201) and fixed with a drive pin (504) for auxiliary drive.
8. The auxiliary device for preventing leakage during paracentesis of abdominal effusion according to claim 7, characterized in that: The telescopic assembly includes multiple sets of sleeves (301) fixed inside the annular cover (201), and a slide rod (302) is slidably connected to the sleeve (301), with one end of the slide rod (302) fixed to the sector plate (202).
9. The auxiliary device for preventing leakage during paracentesis of abdominal effusion according to claim 8, characterized in that: The rotating assembly includes an annular groove (601) opened on the outside of the drive ring (401), and a rotating ring (602) is rotatably connected inside the annular groove (601). The rotating ring (602) is fixed inside the annular cover (201), and the annular groove (601), the rotating ring (602), the drive ring (401) and the annular cover (201) are concentrically arranged.
10. The auxiliary device for preventing leakage during paracentesis of abdominal effusion according to claim 2, characterized in that: The installation assembly includes multiple sets of connecting straps (701) installed on the outside of the annular cover (201), and the connecting straps (701) are embedded with a second adhesive tape (702) for attaching to the puncture site.