Abdominocentesis auxiliary device for liver disease department

Abstract

The invention discloses an abdominal cavity puncture assisting device for the liver disease department, and belongs to the technical field of abdominal cavity puncture assisting. Comprising an attaching disc, a puncture dip angle positioning unit and a puncture needle locking clamp, the attaching disc comprises an outer ring base and an inner ring base, a plurality of stress plates are integrally manufactured between the outer ring base and the inner ring base at intervals, a pressing groove is formed in one stress plate, and an alignment groove is formed in the side, close to the inner ring base, of the pressing groove; clamping seats are arranged on the sides, away from the inner ring seat, of the adjacent stress plates; a plurality of pressing sheets are fixed outside the outer ring seat, and pressure-sensitive adhesive is arranged on the bottom surfaces of the pressing sheets; the puncture dip angle positioning unit comprises a tube base, a movable groove is formed in the tube base, and a positioning frame is hinged to one end of the movable groove. The abdominal cavity puncture auxiliary device for the liver disease department can assist a puncture needle in puncturing a puncture part of an abdominal cavity, does not intervene in a surgical field to cause a blind puncture state, and is convenient to use. And the puncture needle can be stably limited at a puncture position after puncture.

Description

Technical Field

[0001] The present invention specifically relates to a peritoneal puncture assisting device for hepatology department, belonging to the technical field of peritoneal puncture assisting. Background Art

[0002] Abdominal puncture in the liver disease department is used to extract ascites or conduct laboratory tests. When the abdominal puncture is performed to extract ascites, in order to avoid damage to the abdominal organs, the puncture needle needs to be inserted into the abdominal cavity at a certain angle and must reach the insertion depth; in order to facilitate puncture and fix the position after puncture, it is necessary to use a puncture auxiliary device. Existing auxiliary devices such as Chinese patent publication number: CN118750120A discloses an abdominal puncture auxiliary device for the liver disease department, including a U-shaped seat, the top of the U-shaped seat is fixedly connected to an electric telescopic rod 2, the telescopic end of the electric telescopic rod 2 is fixedly connected to a moving seat, and the left side of the moving seat is movably connected to a transmission rod through a bearing; the auxiliary device installation position of this structure is set on the bed. Since abdominal puncture is mostly performed under local anesthesia, when the abdominal puncture is performed, if the patient moves, the auxiliary device cannot The following movement will inevitably cause the auxiliary device and the puncture site to deviate, and in severe cases may even cause harm to the patient. For example, the Chinese patent authorization announcement number: CN209004147U discloses an abdominal puncture auxiliary device for hepatology, including a support plate; a strap is fixedly connected to the support plate; a circular opening is opened in the middle of the support plate; an annular groove is coaxially opened on the inner wall of the opening; a horizontal angle adjustment mechanism is arranged in the opening, which can accurately control the puncture angle and depth of the puncture needle and is safe to use; but when operating, the structure is only pre-adjusted according to the adjustment structure, and is completely in a blind puncture state after the adjustment. Due to the patient's own conditions and the interference of the inclination angle, the depth of the needle insertion cannot be known in advance. Therefore, the above structure obviously cannot assist the needle insertion well, and after the needle is inserted, the puncture needle is prone to separation from the puncture site. Summary of the invention

[0003] To solve the above problems, the present invention proposes an abdominal puncture auxiliary device for hepatology department, which can assist the puncture needle in puncturing the puncture site of the abdominal cavity without interfering with the surgical field to cause a blind puncture state, and can stably limit the puncture needle to the puncture position after puncture.

[0004] The abdominal puncture auxiliary device for hepatology of the present invention comprises: The covering disc comprises an outer ring seat and an inner ring seat, wherein the outer ring seat and the inner ring seat are spaced apart and formed into a plurality of force-bearing plates, one of the force-bearing plates is provided with a pressing groove, and the side of the pressing groove close to the inner ring seat is provided with an alignment groove; a clamping seat is provided on the side of the adjacent force-bearing plate away from the inner ring seat, and the adjacent force-bearing plates are spaced 90 degrees apart; a plurality of pressing sheets are fixed to the outside of the outer ring seat, and a pressure-sensitive adhesive is provided on the bottom surface of the pressing sheet; The puncture inclination positioning unit comprises a tube seat, the tube seat is provided with a movable groove, one end of the movable groove is hinged with a positioning frame, the positioning frame is hinged with a connecting arm at one end close to the movable groove, and the other end of the connecting arm is hinged with a rack; the tube seat is provided with an inclination locking piece locked with the rack at one end away from the positioning frame; the tube seat is engaged with the alignment groove and pressed into the inner side of the pressing groove; The puncture needle locking clamp comprises a clamp body, and the two clamping ends of the clamp body are respectively fixed with a first semicircular cavity and a second semicircular cavity; when the clamp body is clamped, the first semicircular cavity and the second semicircular cavity form a circular cavity column; the circular cavity column is pressed tightly against the outer wall of the puncture needle; the circular cavity column is embedded in the positioning frame; the pressing end of the clamp body is movably engaged with the clamping seat.

[0005] When in use, the puncture site is disinfected, then the inner ring seat is aligned with the puncture point, and the release paper at the bottom of the pressing sheet is torn off, then the covering disc is pressed to the puncture site and adhered to the abdominal skin through the pressure-sensitive adhesive; then, the puncture inclination positioning unit is assembled with the covering disc. During assembly, the inner side of one end of the tube seat is engaged with the alignment groove. After the alignment is completed, the tube seat is pressed to the inner side of the pressing groove; at this time, the tube seat and the covering disc are limited; then, the hole towel is spread so that the puncture inclination positioning unit passes through the hole of the hole towel; then, the puncture needle is inserted into the positioning frame, and the inclination locking piece is unlocked from the rack, then, the inclination angle of the positioning frame is adjusted, and after the adjustment is completed, the rack is locked by the inclination locking piece; at this time, the puncture angle adjustment is completed, and at this time, the puncture site is calibrated by the oblique needle insertion and the labyrinth needle insertion method. The puncture is performed in the position, and the needle insertion is stopped when the puncture process reaches the feeling of falling empty; at this time, the puncture needle is clamped by the puncture needle locking clamp, so that the puncture needle and the puncture needle locking clamp are clamped as a whole, and the two ends of the puncture needle locking clamp are limited by the positioning frame. At this time, the axial position of the puncture needle is limited by the puncture needle locking clamp and the positioning frame, and the radial position of the puncture needle is limited by the perforation of the positioning frame; when the puncture needle locking clamp is used, the pressing end of the clamp body is pressed to separate the first semicircular cavity and the second semicircular cavity, and the first semicircular cavity and the second semicircular cavity are pressed against the outer wall of the puncture needle; then, the pressing end of the clamp body is pressed against the holder, and the pressing end of the clamp body is released. At this time, the pressing end of the clamp body is limited by the holder, and at the same time, the first semicircular cavity and the second semicircular cavity automatically hold the puncture needle, and then, the subsequent ascites extraction action can be performed.

[0006] Furthermore, the inclination locking component includes a pressing handle, which is hinged to one end of the tube seat away from the positioning frame, and the bottom surface of the pressing handle is provided with a tooth groove that engages with the rack; a spring sleeve is fixed to the top of the tube seat, and a spring body that is pressed against the pressing handle is fixed to the inner side of the spring sleeve; when the puncture inclination positioning unit is adjusted, force is applied to the pressing handle, and the pressing handle compresses the spring body to push it up, at this time, the pressing handle and the rack are separated, and the rack is made to slide along the inner wall of the tube seat by adjusting the connecting arm; after the positioning frame completes the angle adjustment, the pressing handle is released, and the pressing handle can automatically lock the rack; at this time, the inclination of the positioning frame is automatically locked.

[0007] Furthermore, the positioning frame includes a swing arm, the top and bottom surfaces of the swing arm are integrally formed with an upper ring seat and a lower ring seat, and the outer side of the bottom of the swing arm is integrally formed with a hinge seat; the circular cavity column is embedded between the upper ring seat and the lower ring seat; the puncture needle moves through the upper ring seat, the lower ring seat and the circular cavity column; the positioning frame is composed of a swing arm, an upper ring seat and a lower ring seat, and an operating gap is arranged between the upper ring seat and the lower ring seat. At this time, when the puncture needle passes through the upper ring seat and the lower ring seat, the fingers can be held between the upper ring seat and the lower ring seat, and then, the puncture can be carried out, and through the guidance of the upper ring seat and the lower ring seat, auxiliary oblique needle insertion can be directly carried out, and it can be intuitively felt whether the puncture process reaches a sense of failure; in addition, the gap between the upper ring seat and the lower ring seat can be used as a limiting gap for the puncture needle locking clamp.

[0008] Furthermore, a centering disk is movably engaged with the inner side of the upper ring seat or the lower ring seat, and the puncture needle movably passes through the centering disk; the bottom surface of the centering disk is pressed onto the end of the clamp body; when the puncture needle is performing puncture, the puncture needle is passed through the upper ring seat, the centering disk and the lower ring seat. At this time, the puncture inclination angle positioning unit is not adjusted first. After the puncture is completed, the centering disk is slid, and the inclination angle of the puncture inclination angle positioning unit is adjusted to make the positioning frame and the centering disk engage with each other in position. After the puncture inclination angle positioning unit is self-locked, the centering disk is limited by the puncture needle locking clip.

[0009] Furthermore, a retaining ring is provided at the pressing end of the clamp body, and the retaining ring is movably engaged with both sides of the clamping seat; a tooth groove is provided on one side of the clamping seat that is close to each other, and a retaining rib engaged with the tooth groove is integrally formed on the inner side of the retaining ring; during operation, after the puncture inclination angle positioning unit completes the inclination angle adjustment and the puncture needle puncture, the clamping angle of the puncture needle locking clamp to the puncture needle is adjusted circumferentially, and the clamp body is moved toward the puncture needle, then the clamp body is sent between the clamping seats, and the pressing end of the clamp body is released; at this time, the retaining ring is movably engaged with both sides of the clamping seat, and at the same time, the retaining rib and the tooth groove of the clamping seat are engaged with each other to limit the position, thereby realizing inclination locking.

[0010] Furthermore, the inner walls of the first semicircular cavity and the second semicircular cavity are provided with a plurality of compression rings at intervals, and the compression rings are engaged with the outer wall of the puncture needle; the outer wall of the puncture needle can be compressed in multiple steps by the plurality of compression rings, so that the compression rings and the puncture needle can be restricted.

[0011] Furthermore, the tube seat is integrally formed with a pressure strip near one end of the spring sleeve. After the tube seat is pressed into the pressure groove, the pressure strip is fitted with the top surface of the force-bearing plate, and the pressure strip and the pressure plate are fitted together by medical tape; one end of the tube seat is limited by the alignment groove, and the other end of the tube seat is limited by the pressure strip and the medical tape, so that the tube seat can be firmly fixed on the inner side of the pressure groove.

[0012] Furthermore, the covering plate is arranged on the bottom surface of the drape, and the puncture inclination angle positioning unit passes through the puncture hole of the drape.

[0013] Furthermore, the inner diameter of the inner ring seat is larger than the inner diameter of the lower ring seat, which can prevent the inner ring seat from blocking the puncture site.

[0014] Furthermore, an operating rod is provided near the hinged end of the connecting arm, and the operating rod can assist the connecting arm in swinging, thereby enabling the rack to slide linearly along the inside of the pipe seat.

[0015] Compared with the prior art, the abdominal puncture auxiliary device for hepatology department of the present invention has a puncture inclination positioning unit which can adjust the puncture inclination and automatically lock the inclination angle, so as to assist the puncture needle in puncturing the puncture site of the abdominal cavity. When the puncture needle is puncturing, it can be close to the abdominal position, and the needle insertion is more stable. It will not interfere with the surgical field and cause a blind puncture state. It can be convenient to judge whether the puncture is in place. After the puncture is in place, the puncture needle can be stably restricted to the puncture position. Finally, the liquid extraction operation can be performed, and all the work can be completed directly by one person. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the covering plate of the present invention.

[0017] Figure 2 It is a schematic diagram of the overall structure of the puncture assisting device of the present invention.

[0018] Figure 3 It is a schematic diagram of the installation structure of the puncture inclination angle positioning unit and the puncture needle locking clamp of the present invention.

[0019] Figure 4 It is a schematic diagram of the overall structure of the puncture needle locking clip of the present invention.

[0020] Figure 5 It is a schematic diagram of the overall structure of the puncture inclination angle positioning unit of the present invention.

[0021] Figure 6 It is a schematic diagram of the overall structure of the tilt locking member of the present invention.

[0022] Figure 7 It is a schematic diagram of the matching structure of the puncture inclination angle positioning unit and the centering disk of the present invention.

[0023] Figure 8 It is a schematic diagram of the installation structure of the first semicircular cavity and the press-fit ring of the present invention.

[0024] : 1. outer ring seat, 2. inner ring seat, 3. force plate, 4. pressure groove, 5. alignment groove, 6. clamping seat, 7. pressing sheet, 8. pressure-sensitive adhesive, 9. tube seat, 10. movable groove, 11. positioning frame, 12. connecting arm, 13. rack, 14. clamping body, 15. first semicircular cavity, 16. second semicircular cavity, 17. pressing handle, 18. tooth groove, 19. spring sleeve, 20. spring body, 21. swing arm, 22. upper ring seat, 23. lower ring seat, 24. hinged seat, 25. centering disk, 26. retaining ring, 27. clamping rib, 28. pressing ring, 29. pressure strip, 30. operating lever. DETAILED DESCRIPTION

[0025] Example: like Figures 1 to 8 The abdominal puncture assisting device shown for hepatology department includes: A covering disc, the covering disc comprises an outer ring seat 1 and an inner ring seat 2, a plurality of force-bearing plates 3 are formed integrally with the outer ring seat 1 and the inner ring seat 2, a pressing groove 4 is provided on one of the force-bearing plates 3, a positioning groove 5 is provided on the side of the pressing groove 4 close to the inner ring seat 2; a clamping seat 6 is provided on the side of the adjacent force-bearing plate 3 away from the inner ring seat 2, and the adjacent force-bearing plates 3 are spaced 90 degrees apart; a plurality of pressing sheets 7 are fixed to the outside of the outer ring seat 1, and a pressure-sensitive adhesive 8 is provided on the bottom surface of the pressing sheet 7; The puncture inclination positioning unit comprises a tube seat 9, the tube seat 9 is provided with a movable groove 10, one end of the movable groove 10 is hinged with a positioning frame 11, the positioning frame 11 is hinged with a connecting arm 12 at one end close to the movable groove 10, and the other end of the connecting arm 12 is hinged with a rack 13; the tube seat 9 is provided with an inclination locking member locked with the rack 13 at one end away from the positioning frame 11; the tube seat 9 is engaged with the alignment groove 5 and pressed into the inner side of the pressing groove 4; The puncture needle locking clamp comprises a clamp body 14, and the two clamping head ends of the clamp body 14 are respectively fixed with a first semicircular cavity 15 and a second semicircular cavity 16; when the clamp body 14 is clamped, the first semicircular cavity 15 and the second semicircular cavity 16 form a circular cavity column; the circular cavity column is pressed tightly against the outer wall of the puncture needle; the circular cavity column is embedded in the positioning frame 11; the pressing end of the clamp body 14 is movably engaged with the clamping seat 6.

[0026] When in use, the puncture site is disinfected, then the inner ring seat 2 is aligned with the puncture point, and the release paper at the bottom of the pressing sheet 7 is torn off, then the covering disc is pressed to the puncture site and adhered to the abdominal skin through the pressure-sensitive adhesive 8; then, the puncture inclination positioning unit is assembled with the covering disc, and during assembly, the inner side of one end of the tube seat 9 is engaged with the alignment groove 5, and after the alignment is completed, the tube seat 9 is pressed to the inner side of the pressing groove 4; at this time, the tube seat 9 and the covering disc are limited; then, the hole towel is laid so that the puncture inclination positioning unit passes through the hole of the hole towel; then, the puncture needle is inserted into the positioning frame 11, and the inclination locking piece unlocks the rack 13, then, the inclination angle of the positioning frame 11 is adjusted, and after the adjustment is completed, the rack 13 is locked by the inclination locking piece; at this time, the puncture angle adjustment is completed, and at this time, the puncture site is punctured by oblique needle insertion and labyrinth needle insertion methods, When the puncture process reaches the feeling of falling empty, the needle is stopped; at this time, the puncture needle is clamped by the puncture needle locking clamp, so that the puncture needle and the puncture needle locking clamp are clamped as a whole, and the two ends of the puncture needle locking clamp are limited by the positioning frame 11. At this time, the axial position of the puncture needle is limited by the puncture needle locking clamp and the positioning frame 11, and the radial position of the puncture needle is limited by the perforation of the positioning frame 11; when the puncture needle locking clamp is used, the pressing end of the clamp body 14 is pressed to separate the first semicircular cavity 15 and the second semicircular cavity 16, and the first semicircular cavity 15 and the second semicircular cavity 16 are close to the outer wall of the puncture needle; then, the pressing end of the clamp body 14 is pressed against the holder 6, and the pressing end of the clamp body 14 is released. At this time, the pressing end of the clamp body 14 is limited by the holder 6, and at the same time, the first semicircular cavity 15 and the second semicircular cavity 16 automatically hold the puncture needle, and then, the subsequent ascites extraction action can be performed.

[0027] The inclination locking member includes a pressing handle 17, which is hinged to the end of the tube seat 9 away from the positioning frame 11, and the bottom surface of the pressing handle 17 is provided with a tooth groove 18 engaged with the rack 13; a spring sleeve 19 is fixed to the top of the tube seat 9, and a spring body 20 that is tightly pressed against the pressing handle 17 is fixed to the inner side of the spring sleeve 19; when the puncture inclination positioning unit is adjusted, force is applied to the pressing handle 17, and the pressing handle 17 compresses the spring body 20 to push it up, at this time, the pressing handle 17 and the rack 13 are separated, and the rack 13 is slid along the inner wall of the tube seat 9 by adjusting the connecting arm 12; after the positioning frame 11 completes the angle adjustment, the pressing handle 17 is released, and the pressing handle 17 can automatically lock the rack 13; at this time, the inclination of the positioning frame 11 is automatically locked.

[0028] The positioning frame 11 includes a swing arm 21, the top and bottom surfaces of which are integrally formed with an upper ring seat 22 and a lower ring seat 23, and the outer side of the bottom of the swing arm 21 is integrally formed with a hinge seat 24; the circular cavity column is embedded between the upper ring seat 22 and the lower ring seat 23; the puncture needle movably passes through the upper ring seat 22, the lower ring seat 23 and the circular cavity column; the positioning frame 11 is composed of the swing arm 21, the upper ring seat 22 and the lower ring seat 23, and an operating gap is set between the upper ring seat 22 and the lower ring seat 23. At this time, when the puncture needle passes through the upper ring seat 22 and the lower ring seat 23, the fingers can be held between the upper ring seat 22 and the lower ring seat 23, and then puncture can be performed, and through the guidance of the upper ring seat 22 and the lower ring seat 23, auxiliary oblique needle insertion can be directly performed, and the puncture process can be intuitively felt whether the sense of failure is achieved; in addition, the gap between the upper ring seat 22 and the lower ring seat 23 can be used as a limiting gap for the puncture needle locking clamp.

[0029] A centering disk 25 is movably engaged with the inner side of the upper ring seat 22 or the lower ring seat 23, and the puncture needle movably passes through the centering disk 25; the bottom surface of the centering disk 25 is pressed onto the end of the clamp body 14; when the puncture needle is puncturing, the puncture needle is passed through the upper ring seat 22, the centering disk 25 and the lower ring seat 23. At this time, the puncture inclination positioning unit is not adjusted first. After the puncture is completed, the centering disk 25 is slid, and the inclination angle of the puncture inclination positioning unit is adjusted to make the positioning frame 11 and the centering disk 25 aligned and engaged. After the puncture inclination positioning unit is self-locked, the centering disk 25 is limited by the puncture needle locking clip.

[0030] The pressing end of the clamp body 14 is provided with a retaining ring 26, and the retaining ring 26 is movably fitted with both sides of the holder 6; the holder 6 is provided with a tooth groove 18 on one side close to each other, and the inner side of the retaining ring 26 is integrally formed with a retaining rib 27 engaged with the tooth groove 18; during operation, after the puncture inclination angle positioning unit completes the inclination angle adjustment and the puncture needle puncture, the clamping angle of the puncture needle locking clamp to the puncture needle is adjusted circumferentially, and the clamp body 14 is moved toward the puncture needle, then, the clamp body 14 is sent between the holder 6, and the pressing end of the clamp body 14 is released; at this time, the retaining ring 26 is movably engaged with both sides of the holder 6, and at the same time, the retaining rib 27 and the tooth groove 18 of the holder 6 are engaged with each other to limit the position, so as to achieve inclination locking.

[0031] The inner walls of the first semicircular cavity 15 and the second semicircular cavity 16 are provided with a plurality of compression rings 28 at intervals, and the compression rings 28 are engaged with the outer wall of the puncture needle; the outer wall of the puncture needle can be compressed in multiple passes by the plurality of compression rings 28, so that the compression rings 28 and the puncture needle can be restricted.

[0032] The tube seat 9 is integrally formed with a pressure strip 29 at one end close to the spring sleeve 19. After the tube seat 9 is pressed into the pressing groove 4, the pressure strip 29 is in contact with the top surface of the force-bearing plate 3, and the pressure strip 29 and the pressure plate are in contact with each other through medical tape; one end of the tube seat 9 is limited by the alignment groove 5, and the other end of the tube seat 9 is limited by the pressure strip 29 and the medical tape, so that the tube seat 9 can be firmly fixed on the inner side of the pressing groove 4.

[0033] The covering plate is arranged on the bottom surface of the drape, and the puncture angle positioning unit passes through the puncture hole of the drape.

[0034] The inner diameter of the inner ring seat 2 is greater than the inner diameter of the lower ring seat 23, which can prevent the inner ring seat 2 from blocking the puncture site.

[0035] The connecting arm 12 is provided with an operating rod 30 near the hinged end, and the operating rod 30 can assist the connecting arm 12 to swing, so that the rack 13 can slide linearly along the inside of the pipe seat 9.

[0036] The above embodiments are only preferred implementations of the present invention, so any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A hepatology-related abdominal puncture assisting device, characterized in that: include: The covering disc comprises an outer ring seat and an inner ring seat, wherein the outer ring seat and the inner ring seat are spaced apart and formed into a plurality of force-bearing plates, one of the force-bearing plates is provided with a pressing groove, and the side of the pressing groove close to the inner ring seat is provided with an alignment groove; a clamping seat is provided on the side of the adjacent force-bearing plate away from the inner ring seat; a plurality of pressing sheets are fixed to the outside of the outer ring seat, and a pressure-sensitive adhesive is provided on the bottom surface of the pressing sheet; The puncture inclination positioning unit comprises a tube seat, the tube seat is provided with a movable groove, one end of the movable groove is hinged with a positioning frame, the positioning frame is hinged with a connecting arm at one end close to the movable groove, and the other end of the connecting arm is hinged with a rack; the tube seat is provided with an inclination locking piece locked with the rack at one end away from the positioning frame; the tube seat is engaged with the alignment groove and pressed into the inner side of the pressing groove; The puncture needle locking clamp comprises a clamp body, and the two clamping ends of the clamp body are respectively fixed with a first semicircular cavity and a second semicircular cavity; when the clamp body is clamped, the first semicircular cavity and the second semicircular cavity form a circular cavity column; the circular cavity column is pressed tightly against the outer wall of the puncture needle; the circular cavity column is embedded in the positioning frame; the pressing end of the clamp body is movably engaged with the clamping seat.

2. The abdominal puncture assisting device for hepatology according to claim 1, characterized in that: The inclination locking member includes a pressing handle, which is hinged to one end of the tube seat away from the positioning frame, and the bottom surface of the pressing handle is provided with a tooth groove engaged with the rack; a spring sleeve is fixed on the top of the tube seat, and a spring body is fixed inside the spring sleeve to press against the pressing handle.

3. The abdominal puncture assisting device for hepatology according to claim 1, characterized in that: The positioning frame includes a swing arm, the top and bottom surfaces of the swing arm are integrally formed with an upper ring seat and a lower ring seat, and the outer side of the bottom of the swing arm is integrally formed with a hinge seat; the circular cavity column is embedded between the upper ring seat and the lower ring seat; the puncture needle moves through the upper ring seat, the lower ring seat and the circular cavity column.

4. The abdominal puncture assisting device for hepatology according to claim 3, characterized in that: A centering disk is movably embedded in the inner side of the upper ring seat or the lower ring seat, and the puncture needle movably passes through the centering disk; the bottom surface of the centering disk is pressed onto the end of the clamp body.

5. The abdominal puncture assisting device for hepatology according to claim 1, characterized in that: The pressing end of the clamp body is provided with a retaining ring, which is movably fitted with both sides of the clamping seat; a tooth groove is provided on one side of the clamping seat close to each other, and a retaining rib that is engaged with the tooth groove is integrally formed on the inner side of the retaining ring.

6. The abdominal puncture assisting device for hepatology according to claim 1, characterized in that: The inner walls of the first semicircular cavity and the second semicircular cavity are provided with a plurality of compression rings at intervals, and the compression rings are engaged with the outer wall of the puncture needle.

7. The abdominal puncture assisting device for hepatology according to claim 1, characterized in that: The tube seat is integrally formed with a pressure strip at one end close to the spring sleeve. After the tube seat is pressed into the pressing groove, the pressure strip is fitted with the top surface of the force-bearing plate. The pressure strip and the pressure plate are fitted together by medical tape.

8. The abdominal puncture assisting device for hepatology according to claim 1, characterized in that: The covering plate is arranged on the bottom surface of the drape, and the puncture angle positioning unit passes through the puncture hole of the drape.

9. The abdominal puncture assisting device for hepatology according to claim 1, characterized in that: The inner diameter of the inner ring seat is greater than the inner diameter of the lower ring seat.

10. The abdominal puncture assisting device for hepatology according to claim 1, characterized in that: The connecting arm is provided with an operating rod near the hinged end.

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