Puncture auxiliary device for liver needle biopsy

Abstract

The invention is applicable to the technical field of medical instruments, and provides a liver needle biopsy puncture auxiliary device which comprises a base plate, a supporting cylinder, a supporting rod and a puncture operation guide auxiliary mechanism, the supporting cylinder is fixedly mounted at the top of the base plate, the supporting rod is slidably mounted in the supporting cylinder, and the puncture operation guide auxiliary mechanism is arranged on the supporting cylinder. The top end of the supporting rod extends out of the supporting cylinder, a first height fixing bolt is installed on the supporting cylinder, and the end of the first height fixing bolt abuts against the supporting rod and is used for fixing the position of the supporting rod on the supporting cylinder so that the height of the supporting cylinder and the height of the supporting rod can be adjusted. The puncture operation guiding auxiliary mechanism is arranged on the supporting rod. According to the liver needle biopsy puncture auxiliary device provided by the scheme, the puncture operation guide auxiliary mechanism is adopted, so that the puncture needle can be guided to puncture along a preset track, shaking and errors in the puncture process are reduced, improvement of the puncture precision is facilitated, the risk of injury to surrounding tissues is reduced, and meanwhile, the operation difficulty and fatigue feeling of a doctor are relieved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a liver puncture biopsy puncture auxiliary device. Background Art

[0002] Liver puncture is the abbreviation of liver puncture biopsy. Patients usually use 2% lidocaine for local anesthesia before puncture. Under the guidance of B-ultrasound or CT, the puncture point is determined and marked. Patients usually lie on their backs or slightly to their left side, with their right upper arm raised and placed behind the pillow. The puncture site (usually the 8th-9th intercostal space on the right anterior axillary line) is routinely disinfected. A puncture needle with a core needle is used to pierce the skin first, then vertically pierce the abdominal cavity along the rib gap until it reaches the liver capsule. During the suction process, the syringe is pumped into negative pressure, and the patient is asked to hold his breath and then quickly insert the needle. The depth should not exceed 6 cm to avoid damaging surrounding tissues.

[0003] Since the puncture operation requires manual operation by the doctor, and the doctor's arm is suspended in the air, the puncture needle is long and heavy at the tail end, and the entry and exit are entirely dependent on the operator, and there is no guide for the puncture, the puncture needle shakes during the operation and it is difficult to accurately correspond to the puncture position. In addition, the operation becomes more difficult when the doctor encounters nerve extraction or fatigue that he cannot control. Summary of the invention

[0004] The present invention provides a liver biopsy puncture auxiliary device, which aims to solve the problems raised in the above background technology that the current puncture needle puncture has no guide puncture, the operation accuracy is low, and accidents are prone to occur.

[0005] To solve the above problems, the present invention is implemented as follows: a liver puncture biopsy puncture auxiliary device includes: a base plate, a support tube, a support rod and a puncture operation guide auxiliary mechanism, the support tube is fixedly installed on the top of the base plate, the support rod is slidably installed in the support tube, the top of the support rod extends to the outside of the support tube, and a height fixing bolt is installed on the support tube, the end of the height fixing bolt abuts against the support rod, which is used to fix the position of the support rod on the support tube so that the support tube and the support rod can adjust the height; the puncture operation guide auxiliary mechanism is arranged on the support rod, which is used to assist the puncture operation during liver puncture biopsy, and the puncture operation guide auxiliary mechanism is located outside the top of the support tube.

[0006] Preferably, the puncture operation guiding auxiliary mechanism includes a support ring 1 slidably sleeved on the support rod, a height-fixing bolt 2 is bolted on the support ring 1, and an end of the height-fixing bolt 2 abuts against the support rod for fixing the position of the support ring 1 on the support rod, a support arm is fixedly mounted on the support ring 1, a storage rectangular tube is fixedly mounted on the support arm, a rectangular extension rod is slidably mounted in the storage rectangular tube, a fixed-length bolt is threadedly mounted on the storage rectangular tube, and an end of the fixed-length bolt abuts against the rectangular extension rod for fixing the position of the rectangular extension rod on the storage rectangular tube, one end of the rectangular extension rod away from the support arm extends to the outside of the storage rectangular tube and is fixedly mounted with a U-shaped frame, a rotating shaft 1 is rotatably mounted on the U-shaped frame, a connecting arm is fixedly sleeved on the rotating shaft 1, and a puncture guide cylinder is fixedly mounted on the connecting arm for guiding the puncture needle for puncture.

[0007] Preferably, the puncture guide cylinder comprises a puncture needle guide tube, which is fixedly mounted on the connecting arm, an externally threaded tube is fixedly mounted on the bottom of the puncture needle guide tube, a funnel-shaped needle guide port is provided on the top of the puncture needle guide tube for guiding the puncture needle during insertion, and a needle hole corresponding to the funnel-shaped needle guide port is provided on the puncture needle guide tube and the externally threaded tube, so that the puncture needle passes through the funnel-shaped needle guide port and then through the needle hole.

[0008] Preferably, the diameter of the externally threaded tube is larger than the diameter of the puncture needle guide tube, the externally threaded sleeve of the externally threaded tube is provided with an internally threaded tube, the internally threaded tube is located outside the puncture needle guide tube, a funnel-shaped guide opening is provided at the top of the internally threaded tube, a plurality of contraction openings distributed in a circular array are provided on the inner wall of the puncture needle guide tube, guide columns are slidably installed in the plurality of contraction openings, the ends of the plurality of guide columns away from each other are extended to the outside of the puncture needle guide tube and are located in the funnel-shaped guide opening, the ends of the plurality of guide columns close to each other are fixedly provided with puncture needle positioning ball heads, and the plurality of puncture needle positioning balls are fixedly installed in the plurality of The heads are all located in the needle hole, and multiple puncture needle positioning ball heads cooperate with each other to guide the puncture needle. Multiple contraction openings are fixedly installed with contraction springs, and the contraction springs are sleeved on the corresponding guide columns. The other end of the contraction spring is fixedly connected to the corresponding puncture needle positioning ball heads. Multiple guide columns are fixedly installed with force-bearing tightening blocks at one end located outside the puncture needle guide tube, and multiple force-bearing tightening blocks are provided with guide inclined surfaces on the outside. The guide inclined surfaces cooperate with the inclined surfaces of the funnel-shaped guide openings to control the position of the puncture needle positioning ball head in the needle hole when the internal threaded tube moves along the external threaded tube.

[0009] Preferably, both ends of the rotating shaft 1 are located outside the U-shaped frame, a locking stud is fixedly installed at one end of the rotating shaft 1, a locking nut is threadedly sleeved on the locking stud, and one end surface of the locking nut is in conflict with the side of the U-shaped frame, so that the rotating shaft 1, the connecting arm and the puncture guide cylinder are fixed at a fixed angle on the U-shaped frame.

[0010] Preferably, a plurality of operating handles are fixedly mounted on the locking nut, and the plurality of operating handles are distributed along a circular array on the locking nut.

[0011] Preferably, a second rotating shaft is rotatably installed on the rectangular extension rod, and the rear of the rotating shaft is arranged parallel to the first rotating shaft. Both ends of the second rotating shaft extend outside the rectangular extension rod, and both ends of the second rotating shaft are fixedly installed with hinge plates. A hand rest located above the rectangular extension rod is fixedly installed on the top of the hinge plate. The hand rest is located on the side of the puncture needle guide tube and is used for resting the arm during the puncture operation.

[0012] Preferably, an intermediate shaft located between rotating shaft one and rotating shaft two is rotatably mounted on the rectangular extension rod, a synchronous toothed disc is fixedly mounted on one end of the intermediate shaft, synchronous gears are fixedly mounted on the same end of rotating shaft one and rotating shaft two, both of the synchronous gears are meshed with the synchronous toothed disc located in the middle, the two synchronous gears are of equal proportion and have the same gear speed ratio with the synchronous toothed disc, so that rotating shaft one and rotating shaft two deflect synchronously.

[0013] Preferably, the support arm extends to one side so that the storage rectangular tube is located on one side of the support rod.

[0014] Preferably, the locking stud and the synchronous gear located on the rotating shaft one are respectively located at two ends of the rotating shaft one.

[0015] Compared with the related art, the liver puncture biopsy puncture auxiliary device provided by the present invention has the following beneficial effects: Compared with the existing technology, the liver puncture biopsy puncture auxiliary device provided in this scheme adopts a puncture operation guiding auxiliary mechanism to guide the puncture needle to perform puncture along a predetermined trajectory, reducing shaking and errors during the puncture process, which helps to improve the accuracy of puncture and reduce the risk of damage to surrounding tissues, while reducing the difficulty and fatigue of the doctor's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main stereoscopic structure of a liver puncture biopsy puncture auxiliary device provided by the present invention; Figure 2 for Figure 1 An enlarged structural diagram of part A shown in FIG. Figure 3 for Figure 1 An enlarged schematic diagram of the structure of part B shown in FIG. Figure 4 This is a bottom-up stereoscopic structural diagram of a liver puncture biopsy puncture auxiliary device provided by the present invention; Figure 5 for Figure 4 An enlarged schematic diagram of the structure of part C shown in FIG. Figure 6 It is a schematic diagram of the main cross-sectional structure of a liver puncture biopsy puncture auxiliary device provided by the present invention; Figure 7 for Figure 6 An enlarged structural diagram of part D shown in FIG. Figure 8 for Figure 6 An enlarged structural diagram of part E shown in FIG. Fig. 9 for Figure 6 An enlarged structural diagram of part F shown in FIG. Fig.10 It is a bottom-up three-dimensional structural schematic diagram of the base plate in the present invention; Fig.11 for Fig.10 The top view of the three-dimensional structure is shown; Fig.12 It is a schematic diagram of the connection structure of the support rod, the rack plate, the driven shaft, the driven gear and the conical gear disc in the present invention; Fig.13 It is a schematic diagram of the main three-dimensional distribution structure of the puncture operation guiding auxiliary mechanism and the arm pushing and blocking mechanism in the present invention; Fig.14 It is a schematic diagram of the main perspective transmission assembly structure of the rectangular extension rod, the puncture guide cylinder and the hand rest in the present invention; Fig.15 for Fig.14 A schematic diagram of the three-dimensional structure of the portion shown when viewed from above; Fig.16 It is a schematic diagram of the front cross-sectional structure of the puncture guide cylinder in the present invention; Fig.17 It is a cross-sectional structural schematic diagram of the rotating shaft 1, locking stud, locking nut, operating handle and synchronous gear part in the present invention.

[0017] 1. Base plate; 2. Support tube; 3. Support rod; 4. Height fixing bolt 1; 5. Support ring 1; 6. Height fixing bolt 2; 7. Support arm; 8. Storage rectangular tube; 9. Rectangular extension rod; 10. Fixed length bolt; 11. U-shaped frame; 12. Rotating shaft 1; 13. Connecting arm; 14. Puncture needle guide tube; 15. Externally threaded tube; 16. Funnel-shaped guide needle port; 17. Needle threading hole; 18. Internally threaded tube; 19. Funnel-shaped guide port; 20. Contraction port; 21. Guide column; 22. Puncture needle positioning ball head; 23. Contraction spring; 24. Force tightening block; 25. Guide ramp; 26. Locking stud; 27. Locking nut; 28. Operating handle; 29. ​​Rotating shaft 2; 30. Hinge plate; 31. Handrest; 32. Intermediate shaft; 33. Same Step toothed disc; 34. Synchronous gear; 35. Support ring 2; 36. Contact plate at the bottom of the bed board; 37. Height fixing bolt 3; 38. Support ring 3; 39. Height fixing arc block; 40. Height fixing bolt 4; 41. Positioning ring; 42. Angle adjustment ring; 43. Fixed angle bolt; 44. U-shaped track frame; 45. Adjustment screw; 46. L-shaped lifting plate; 47. Arm push plate; 48. Soft cushion; 49. Rectangular opening; 50. Anti-rotation slider; 51. Storage opening; 52. Telescopic screw; 53. Expansion stabilizing plate; 54. Rack plate; 55. Driven shaft; 56. Driven gear; 57. Conical toothed disc; 58. Power transmission shaft 1; 59. Power transmission shaft 2; 60. Conical gear 1; 61. Conical gear 2; 62. Differential toothed disc; 63. Differential gear. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" in the specification and claims of the present application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned figures are used to distinguish different objects, rather than to describe a specific order; the terms "inside", "outside", "left", and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0019] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] The embodiment of the present invention provides a liver biopsy puncture auxiliary device, such as Figure 1-17 As shown, the liver puncture biopsy puncture auxiliary device includes: a base plate 1, a support tube 2, a support rod 3 and a puncture operation guiding auxiliary mechanism, the support tube 2 is fixedly installed on the top of the base plate 1, the support rod 3 is slidably installed in the support tube 2, the top of the support rod 3 extends to the outside of the support tube 2, and a height fixing bolt 4 is installed on the support tube 2, the end of the height fixing bolt 4 abuts against the support rod 3, which is used to fix the position of the support rod 3 on the support tube 2 so that the support tube 2 and the support rod 3 can adjust the height; the puncture operation guiding auxiliary mechanism is arranged on the support rod 3, which is used to assist the puncture operation during liver puncture biopsy, and the puncture operation guiding auxiliary mechanism is located outside the top of the support tube 2.

[0021] In this embodiment, first, the base plate 1 is placed steadily on the ground next to the operating table to ensure that the device is stable and does not shake. Then, according to the patient's body shape and puncture requirements, the height of the support rod 3 in the support tube 2 is adjusted. By rotating the height fixing bolt 4, the end of the support rod 3 is abutted and fixed, thereby achieving precise height adjustment. In this way, it can be ensured that the puncture operation guide auxiliary mechanism is located in a suitable position, which is convenient for the doctor to operate. Then, the doctor installs the puncture needle on the puncture operation guide auxiliary mechanism, which can guide the puncture needle to puncture along a predetermined trajectory. Under the guidance of B-ultrasound or CT, the doctor can determine the puncture point and ensure that the puncture needle can accurately reach the target position through the puncture operation guide auxiliary mechanism. Finally, the doctor performs puncture according to the standard liver puncture biopsy operation process, and after the puncture is completed, the puncture needle is removed from the puncture operation guide auxiliary mechanism for subsequent processing and analysis. The liver puncture biopsy puncture auxiliary device described in this scheme can adapt to patients of different body shapes and different puncture requirements through the adjustable height support tube 2 and support rod 3. This design improves the versatility and flexibility of the device, allowing doctors to adjust the height according to different situations, thereby ensuring the accuracy and safety of the puncture operation.

[0022] In addition, the design of the puncture operation guidance auxiliary mechanism can guide the puncture needle along the predetermined trajectory for puncture, reducing shaking and errors during the puncture process. This helps to improve the accuracy of puncture, reduce the risk of damage to surrounding tissues, and reduce the difficulty and fatigue of doctors. Through precise guidance and assistance, doctors can find the puncture point and complete the puncture operation more quickly, thereby shortening the operation time and reducing the pain and discomfort of patients.

[0023] In a further preferred embodiment of the present invention, the puncture operation guiding auxiliary mechanism includes a support ring 5 slidably sleeved on the support rod 3, and a height-fixing bolt 2 6 is bolted on the support ring 5, and the end of the height-fixing bolt 2 6 abuts against the support rod 3, which is used to fix the position of the support ring 5 on the support rod 3, and a support arm 7 is fixedly installed on the support ring 5, and a storage rectangular tube 8 is fixedly installed on the support arm 7, and a rectangular extension rod 9 is slidably installed in the storage rectangular tube 8, and a fixed-length bolt 10 is threadedly installed on the storage rectangular tube 8, and the end of the fixed-length bolt 10 abuts against the rectangular extension rod 9, which is used to fix the position of the rectangular extension rod 9 on the storage rectangular tube 8, and the end of the rectangular extension rod 9 extends away from the support arm 7 to the outside of the storage rectangular tube 8 and is fixedly installed with a U-shaped frame 11, and a rotating shaft 12 is rotatably installed on the U-shaped frame 11, and a connecting arm 13 is fixedly sleeved on the rotating shaft 12, and a puncture guide cylinder is fixedly installed on the connecting arm 13 for guiding the puncture needle for puncture.

[0024] In this embodiment, first, the doctor determines the overall height of the puncture operation guide auxiliary mechanism by adjusting the height of the support rod 3 in the support tube 2 and the position of the support ring 5 on the support rod 3 according to the specific situation of the patient and the puncture requirements, which can be achieved by rotating the height fixing bolt 4. Next, the doctor adjusts the extended length of the rectangular extension rod 9 in the receiving rectangular tube 8 to meet different needs. By rotating the fixed length bolt 10, the end of the rectangular extension rod 9 is abutted against the rectangular extension rod 9, thereby fixing the position of the rectangular extension rod 9. Finally, the connecting arm 13 on the U-shaped frame 11 is rotated by the rotating shaft 12 to adjust the angle of the puncture guide cylinder and provide reliable support for the puncture guide cylinder. During the puncture, the doctor inserts the puncture needle into the puncture guide cylinder and performs puncture along its guiding direction. The design of the puncture guide cylinder can ensure that the puncture needle maintains a stable trajectory during the puncture process, reduces shaking and errors, and improves the accuracy and safety of the puncture.

[0025] This embodiment adds structures such as a support ring 5, a storage rectangular tube 8, and a rectangular extension rod 9, so that the puncture operation guiding auxiliary mechanism has higher flexibility and adaptability. The doctor can flexibly adjust the height, tilt angle, and extension length of the device according to the patient's body shape, puncture site, depth, and other specific conditions, thereby ensuring the accuracy and safety of the puncture operation.

[0026] In addition, the design of the puncture guide cylinder can guide the puncture needle along the predetermined trajectory, further reducing the shaking and error during the puncture process. This helps to improve the accuracy of the puncture, reduce the risk of damage to surrounding tissues, and reduce the difficulty and fatigue of the doctor's operation.

[0027] In a further preferred embodiment of the present invention, the puncture guide cylinder includes a puncture needle guide tube 14, which is fixedly mounted on the connecting arm 13, and an externally threaded tube 15 is fixedly mounted on the bottom of the puncture needle guide tube 14, and a funnel-shaped guide needle port 16 is provided on the top of the puncture needle guide tube 14 for guiding the puncture needle during insertion, and a needle hole 17 corresponding to the funnel-shaped guide needle port 16 is provided on the puncture needle guide tube 14 and the externally threaded tube 15, so that the puncture needle passes through the funnel-shaped guide needle port 16 and then through the needle hole 17.

[0028] In this embodiment, after adjusting the overall height, tilt angle and extension length of the puncture operation guide auxiliary mechanism, the doctor focuses on the puncture guide cylinder. The puncture guide cylinder is mainly composed of a puncture needle guide tube 14, an externally threaded tube 15 and a funnel-shaped guide needle port 16. The doctor first inserts the puncture needle through the funnel-shaped guide needle port 16. The design of the guide needle port allows the puncture needle to enter the puncture needle guide tube 14 more easily and accurately. As the puncture needle is inserted, it passes through the needle hole 17 corresponding to the funnel-shaped guide needle port 16. The needle hole 17 is provided on both the puncture needle guide tube 14 and the externally threaded tube 15, ensuring that the puncture needle can pass smoothly and move along the predetermined trajectory.

[0029] During the puncture process, doctors can rely on the stable support and precise guidance of the puncture guide cylinder to ensure that the puncture needle can accurately reach the target position while reducing the risk of damage to surrounding tissues.

[0030] In a further preferred embodiment of the present invention, the diameter of the externally threaded tube 15 is larger than the diameter of the puncture needle guide tube 14, the externally threaded sleeve of the externally threaded tube 15 is provided with an internally threaded tube 18, the internally threaded tube 18 is located outside the puncture needle guide tube 14, the top of the internally threaded tube 18 is provided with a funnel-shaped guide opening 19, the inner wall of the puncture needle guide tube 14 is provided with a plurality of contraction openings 20 distributed in a circular array, a plurality of the contraction openings 20 are slidably installed with guide columns 21, the ends of the plurality of the guide columns 21 away from each other are extended to the outside of the puncture needle guide tube 14 and are located in the funnel-shaped guide opening 19, the ends of the plurality of the guide columns 21 close to each other are fixedly installed with puncture needle positioning ball heads 22, and the plurality of the puncture needle positioning The ball heads 22 are all located in the needle hole 17, and the multiple puncture needle positioning ball heads 22 cooperate with each other to guide the puncture needle. The multiple contraction openings 20 are fixedly installed with contraction springs 23, and the contraction springs 23 are sleeved on the corresponding guide columns 21. The other end of the contraction spring 23 is fixedly connected to the corresponding puncture needle positioning ball heads 22. The ends of the multiple guide columns 21 located outside the puncture needle guide tube 14 are fixedly installed with force-bearing tightening blocks 24, and the outer sides of the multiple force-bearing tightening blocks 24 are provided with guide bevels 25. The guide bevels 25 cooperate with the bevels of the funnel-shaped guide opening 19 to control the position of the puncture needle positioning ball head 22 in the needle hole 17 when the internal threaded tube 18 moves along the external threaded tube 15.

[0031] In this embodiment, first, the doctor inserts the puncture needle through the funnel-shaped guide needle port 16 at the top of the puncture needle guide tube 14. During the insertion process, the design of the funnel-shaped guide port 19 and the funnel-shaped guide needle port 16 enables the puncture needle to enter the interior of the puncture needle guide tube 14 more easily and accurately. Then, as the puncture needle is further inserted, it will successively pass through the puncture needle hole 17 and the guide channel formed by multiple puncture needle positioning ball heads 22. These puncture needle positioning ball heads 22 are connected to the inner wall of the puncture needle guide tube 14 through the guide column 21 and the contraction spring 23. They can automatically adjust their positions under the action of the contraction spring 23 to adapt to puncture needles of different diameters. At the same time, since the multiple puncture needle positioning ball heads 22 are distributed in a circular array, they can jointly provide a stable and uniform guiding force for the puncture needle to ensure that the puncture needle can move along a predetermined trajectory. During the puncture process, the doctor can also adjust its position on the external threaded tube 15 by rotating the internal threaded tube 18. This action will make the funnel-shaped guide opening 19 of the internal threaded tube 18 cooperate with the guide inclined surfaces 25 of the multiple force-bearing tightening blocks 24, so that the force-bearing tightening blocks 24 drive the guide column 21 and the puncture needle positioning ball head 22 to move in the puncture hole 17. In this way, the doctor can adjust the position of the puncture needle positioning ball head 22 according to actual needs to achieve more accurate guidance and positioning of the puncture needle.

[0032] This embodiment significantly improves the accuracy and safety of the puncture operation by innovatively designing the puncture guide cylinder. The design of multiple puncture needle positioning ball heads 22 and guide columns 21 enables the puncture needle to obtain a stable and uniform guiding force during the insertion process, thereby reducing shaking and errors. At the same time, the introduction of the contraction spring 23 and the internal threaded cylinder 18 enables the puncture needle positioning ball head 22 to automatically adjust its position according to the diameter of the puncture needle, thereby improving the adaptability and flexibility of the device.

[0033] In a further preferred embodiment of the present invention, both ends of the rotating shaft 12 are located outside the U-shaped frame 11, and a locking stud 26 is fixedly installed at one end of the rotating shaft 12. A locking nut 27 is threadedly sleeved on the locking stud 26, and one end surface of the locking nut 27 is in conflict with the side of the U-shaped frame 11, so that the rotating shaft 12, the connecting arm 13 and the puncture guide cylinder are fixed at a fixed angle on the U-shaped frame 11.

[0034] In this embodiment, first, the doctor adjusts the overall angle of the connecting arm 13 and the puncture guide cylinder by rotating the rotating shaft 12 to adapt to the body shape and puncture requirements of different patients. After adjusting to a suitable angle, the doctor needs to ensure that the angle is fixed so as to perform subsequent puncture operations. At this time, the doctor can tighten the locking nut 27 on the locking stud 26. One end face of the locking nut 27 will tightly contact the side of the U-shaped frame 11, thereby fixing the rotating shaft 12, the connecting arm 13 and the puncture guide cylinder at the current angle on the U-shaped frame 11 through friction. In this way, the doctor can ensure that during the puncture process, the connecting arm 13 and the puncture guide cylinder will not change their angles due to external force or improper operation, thereby ensuring the accuracy and safety of the puncture.

[0035] In a further preferred embodiment of the present invention, a plurality of operating handles 28 are fixedly mounted on the locking nut 27 , and the plurality of operating handles 28 are distributed along a circular array on the locking nut 27 .

[0036] In this embodiment, when it is necessary to fix the angle of the rotating shaft 12, the connecting arm 13 and the puncture guide cylinder, the doctor can tighten the locking nut 27 by holding and rotating the operating handle 28. Since multiple operating handles 28 are distributed along a circular array on the locking nut 27, the doctor can choose the holding position from multiple directions, making the operation more flexible and convenient. By rotating the operating handle 28, the locking nut 27 will gradually approach and tightly contact the side of the U-shaped frame 11, thereby firmly fixing the rotating shaft 12 at the desired angle. When it is necessary to adjust the angle, the doctor only needs to rotate the operating handle 28 in the opposite direction and loosen the locking nut 27, and then the rotating shaft 12 can be easily rotated to adjust the angle.

[0037] In a further preferred embodiment of the present invention, a second rotating shaft 29 is rotatably installed on the rectangular extension rod 9, and the rear rotating shaft 29 is arranged parallel to the first rotating shaft 12. Both ends of the second rotating shaft 29 extend outside the rectangular extension rod 9, and both ends of the second rotating shaft 29 are fixedly installed with hinge plates 30. The top of the hinge plate 30 is fixedly installed with a hand rest 31 located above the rectangular extension rod 9. The hand rest 31 is located on the side of the puncture needle guide tube 14 and is used for the arm to rest during the puncture operation.

[0038] In this embodiment, in order to facilitate the doctor's arm support during the puncture operation, a hand pillow 31 is specially designed. When performing liver puncture biopsy, the doctor can put his arm on the hand pillow 31, and the hand pillow 31 is connected to the second rotating shaft 29 through the hinge plate 30, and the second rotating shaft 29 is rotatably installed on the rectangular extension rod 9. Since the second rotating shaft 29 is arranged parallel to the first rotating shaft 12, the position of the hand pillow 31 can change accordingly with the angle adjustment of the puncture guide cylinder, and always maintain a comfortable contact with the doctor's arm. The doctor can adjust the position of the arm on the hand pillow 31 according to personal operating habits and comfort. The design of the hand pillow 31 not only provides stable support, but also reduces the doctor's arm fatigue during long-term operation, so that the doctor can focus more on the puncture operation itself. In addition, the hand pillow 31 is located on the side of the puncture needle guide tube 14, which will not interfere with the puncture operation, and it is also convenient for the doctor to observe the progress of the puncture needle at any time.

[0039] In a further preferred embodiment of the present invention, an intermediate shaft 32 located between the rotating shaft 12 and the rotating shaft 29 is rotatably installed on the rectangular extension rod 9, a synchronous gear plate 33 is fixedly installed on one end of the intermediate shaft 32, and a synchronous gear 34 is fixedly installed on the same end of the rotating shaft 12 and the rotating shaft 2, and the two synchronous gears 34 are both meshed with the synchronous gear plate 33 located in the middle, and the two synchronous gears 34 are of equal proportion and have the same gear speed ratio with the synchronous gear plate 33, so that the rotating shaft 12 and the rotating shaft 29 deflect synchronously.

[0040] In this embodiment, when the doctor needs to adjust the angle of the puncture guide cylinder, it can be achieved by rotating the rotating shaft 12. At this time, the synchronous gear 34 fixedly connected to the rotating shaft 12 will rotate accordingly. Since the synchronous gear 34 is meshed with the synchronous toothed disc 33 located in the middle, and the gear speed ratio of the two is equal, the synchronous toothed disc 33 will rotate at the same speed and direction. Then, another synchronous gear 34 meshed with the other side of the synchronous toothed disc 33 will also start to rotate, and this synchronous gear 34 is fixedly connected to the rotating shaft 29. Therefore, as the synchronous gear 34 rotates, the rotating shaft 29 will also deflect at the same speed and direction. Since the two synchronous gears 34 are equal in proportion and have the same gear speed ratio as the synchronous toothed disc 33, the deflection angles of the rotating shaft 12 and the rotating shaft 2 29 are always consistent, achieving synchronous deflection of the two. In this way, the position of the hand pillow 31 will change accordingly with the angle adjustment of the puncture guide cylinder, and always maintain comfortable contact with the doctor's arm.

[0041] This embodiment achieves synchronous deflection of the rotating shaft 12 and the rotating shaft 29 by introducing a transmission mechanism of an intermediate shaft 32, a synchronous toothed disc 33 and a synchronous gear 34. This design not only improves the convenience of operation, but also ensures that the puncture guide cylinder and the hand pillow 31 can maintain consistency and stability when adjusting the angle. At the same time, since the gear speed ratio of the synchronous gear 34 and the synchronous toothed disc 33 is equal, it can ensure that the deflection angle of the rotating shaft 12 and the rotating shaft 29 is accurate, thereby improving the accuracy and safety of the puncture operation.

[0042] In a further preferred embodiment of the present invention, the support arm 7 extends to one side so that the storage rectangular tube 8 is located on one side of the support rod 3 .

[0043] In this embodiment, the support arm 7 extends to one side so that the operator's arm can go around the support rod 3 to avoid being blocked.

[0044] In actual operation, the operator can comfortably stand on one side of the support rod 3, and his arm can naturally go around the support rod 3 to easily reach the puncture-related instruments stored in the rectangular tube 8. This design avoids the embarrassing situation in the traditional layout where the operator's arm may be blocked by the support rod 3. The extended design of the support arm 7 ensures that the operator can maintain a comfortable posture during long-term operation, reducing the fatigue caused by the arm hanging in the air or twisting for a long time.

[0045] In a further preferred embodiment of the present invention, the locking stud 26 and the synchronous gear 34 located on the rotating shaft 12 are respectively located at two ends of the rotating shaft 12.

[0046] In this embodiment, the locking stud 26 and the synchronous gear 34 on the rotating shaft 12 are arranged at both ends of the rotating shaft 12. This layout design allows the operator to more conveniently operate the locking stud 26 to fix the position of the rotating shaft 12 when adjusting the angle of the puncture guide cylinder, and will not interfere with the transmission between the synchronous gear 34 and the synchronous gear plate 33.

[0047] In order to further improve the use effect of the device, in addition to the above scheme, this scheme also has the following embodiments: In another embodiment of the present invention, a sliding sleeve is provided on the support rod 3 with a support ring 2 35 located below the support ring 1 5, and a bed board bottom contact plate 36 located below the support arm 7 is fixedly installed on the support ring 2 35 for abutting against and fixing at the bottom of the bed board, and a height fixing bolt 37 is threadedly installed on the support ring 2 35, and the end of the height fixing bolt 37 abuts against the support rod 3 for positioning the support ring 2 35 on the support rod 3.

[0048] In this embodiment, in order to improve the use effect of the device, a support ring 2 35 and its related components are specially provided. The specific operation method is as follows: First, place the support rod 3 vertically and adjust its height according to actual needs. Then, the contact plate 36 at the bottom of the bed board is used to tightly contact the bottom of the bed board, thereby fixing the device. Next, rotate the height-fixing bolt 37 so that its end is tightly in contact with the support rod 3. By adjusting the screw-in depth of the height-fixing bolt 37, the position of the support ring 2 35 on the support rod 3 can be accurately positioned, and then the relative position of the contact plate 36 at the bottom of the bed board and the bottom of the bed board can be determined, and the entire device can be stably placed next to the bed board.

[0049] In another embodiment of the present invention, the support rod 3 is provided with an arm pushing and covering mechanism for pushing away the patient's arm, and the arm pushing and covering mechanism includes a support ring three 38, and the support ring three 38 is slidably sleeved on the support rod 3, and the support ring three 38 is located above the support ring one 5, and a fixed height arc block 39 is fixedly installed on the top of the support ring three 38, and a fixed height bolt four 40 is threadedly installed on the height fixing arc block 39, and the end of the height fixing bolt four 40 conflicts with the support rod 3, and is used to position the support ring three 38 and the fixed height arc block 39 on the support rod 3, and a positioning ring 41 is fixedly sleeved on the outer ring of the support ring three 38, and an angle adjustment ring 42 is rotatably sleeved on the positioning ring 41, and a fixed angle screw is threadedly installed on the angle adjustment ring 42 Bolt 43, the end of the fixed angle bolt 43 is in conflict with the outer ring of the positioning ring 41, and is used to fix the angle of the angle adjustment ring 42 on the positioning ring 41 and the support ring 38. A U-shaped track frame 44 is fixedly installed on the side of the angle adjustment ring 42. The U-shaped track frame 44 is located above the support arm 7. An adjusting screw 45 is rotatably installed on the U-shaped track frame 44. An L-shaped hanging plate 46 is threadedly sleeved on the adjusting screw 45. The L-shaped hanging plate 46 is slidably connected to the U-shaped track frame 44. An arm push plate 47 is fixedly installed on the bottom of the L-shaped hanging plate 46. The arm push plate 47 is located on one side of the rectangular tube 8 and the rectangular extension rod 9 for pushing the patient's arm away. A cushion 48 is fixedly installed on the side of the arm push plate 47.

[0050] In this embodiment, in order to improve the comfort of the patient and the convenience of the puncture operation, an arm push and cover mechanism is specially provided. The method of using the mechanism is as follows: First, adjust the position of the support ring 3 38 on the support rod 3 according to the patient's height and arm length. By rotating the height fixing bolt 40, the end of the support ring 3 38 is closely in contact with the support rod 3, thereby fixing the position of the support ring 3 38 and the height fixing arc block 39. Next, adjust the angle of the angle adjustment ring 42 according to actual needs. By rotating the fixed angle bolt 43, the end of the support ring 41 is closely in contact with the outer ring of the positioning ring 41, thereby fixing the angle of the angle adjustment ring 42 on the positioning ring 41 and the support ring 3 38. In this way, the U-shaped track frame 44 and the L-shaped hanging plate 46 can be flexibly adjusted according to the specific posture of the patient. Then, by rotating the adjustment screw 45, adjust the position of the L-shaped hanging plate 46 on the U-shaped track frame 44, and then adjust the height and position of the arm push plate 47. When the arm push plate 47 is located next to the patient's arm, gently push the arm push plate 47 so that it gently pushes the patient's arm away so that the doctor can perform the puncture operation. The provision of the soft pad 48 can effectively protect the patient's arms and avoid discomfort during the pushing process.

[0051] This embodiment significantly improves the patient's comfort and the convenience of the puncture operation by adding an arm push-and-cover mechanism. The arm push plate 47 can gently push the patient's arm away, providing the doctor with a more spacious operating space, thereby improving the accuracy and safety of the puncture operation. At the same time, the setting of the cushion 48 effectively protects the patient's arm and avoids skin abrasions or discomfort that may be caused during the pushing process. In addition, by adjusting the position and angle of the support ring 38, the angle adjustment ring 42 and the L-shaped hanging plate 46, it can adapt to the height and arm length of different patients, thereby improving the applicability and flexibility of the device.

[0052] In another embodiment of the present invention, a rectangular opening 49 is opened on the support rod 3, and three anti-rotation sliders 50 are slidably installed in the rectangular opening 49. The three anti-rotation sliders 50 are respectively fixedly installed in the support ring 1 5, support ring 2 35 and support ring 3 38, and are used to prevent the support ring 1 5, support ring 2 35 and support ring 3 38 from rotating during use.

[0053] In this embodiment, in order to further enhance the stability and reliability of the device, a rectangular opening 49 is particularly provided on the support rod 3, and three anti-rotation sliders 50 are slidably installed therein. The three anti-rotation sliders 50 are respectively fixedly installed in the support ring 1 5, the support ring 2 35 and the support ring 3 38, and the method of using them is very simple and effective. Due to the existence of the rectangular opening 49, the anti-rotation sliders 50 can slide freely along the length direction of the rectangular opening 49, but cannot rotate around the support rod 3. Therefore, when the support ring 1 5, the support ring 2 35 and the support ring 3 38 are adjusted to the appropriate position, the anti-rotation sliders 50 will effectively prevent these support rings from rotating during use, thereby ensuring the overall stability of the device.

[0054] In another embodiment of the present invention, a storage opening 51 is provided on one side of the bottom of the base plate 1, and a telescopic screw 52 is rotatably installed in the storage opening 51, and an expansion stabilizing plate 53 threadedly sleeved on the telescopic screw 52 is slidably installed in the storage opening 51, and the extension direction of the expansion stabilizing plate 53 is located below the contact plate 36 at the bottom of the bed board, and the extension or contraction of the expansion stabilizing plate 53 is synchronized with the extension or contraction of the support rod 3, and a rack plate 54 located in the support tube 2 is fixedly installed at the bottom end of the support rod 3, and a driven shaft 55 rotatably connected to the support tube 2 is provided on the toothed side of the rack plate 54, and a driven gear 56 is fixedly installed on one end of the driven shaft 55 located in the support tube 2, and a conical gear disk 57 is fixedly installed on the other end located outside the support tube 2, and the driven gear 56 is meshed with the rack plate 54 so that When the support rod 3 drives the rack plate 54 to move, the driven shaft 55, the driven gear 56 and the bevel gear disc 57 are driven to rotate. A power transmission shaft 58 rotatably installed on the side of the support tube 2 is provided below the bevel gear disc 57. A power transmission shaft 59 rotatably installed on the top of the base plate 1. A bevel gear 60 is fixedly installed on the top of the power transmission shaft 58. The bevel gear 60 is meshed with the bevel gear disc 57. The adjacent ends of the power transmission shaft 58 and the power transmission shaft 59 are both fixedly installed with bevel gear 61. The two bevel gears 61 are meshed with each other. The other end of the power transmission shaft 59 is fixedly provided with a differential gear disc 62. The end of the telescopic screw 52 located outside the base plate 1 is fixedly provided with a differential gear 63, and the differential gear 63 is meshed with the differential gear disc 62.

[0055] In this embodiment, in order to further improve the stability and applicability of the device, an extended stabilizing plate 53 and its related transmission mechanism are specially provided. The method of use is as follows: First, when the height or stability of the device needs to be adjusted, the operator can adjust the extension length of the extended stabilizing plate 53 by rotating the telescopic screw 52. Since the telescopic screw 52 is threadedly connected to the extended stabilizing plate 53, and the extended stabilizing plate 53 is slidably installed in the receiving port 51, rotating the telescopic screw 52 can drive the extended stabilizing plate 53 to extend or contract along the length direction of the receiving port 51. At the same time, when the height of the support rod 3 changes, due to the meshing relationship between the rack plate 54 and the driven gear 56, the driven shaft 55, the driven gear 56 and the conical gear disc 57 will rotate accordingly. Through the meshing of the conical gear 1 60 and the conical gear disc 57, and the transmission effect of the conical gear 2 61, the power will be transmitted to the power transmission shaft 2 59. Finally, through the meshing relationship between the differential gear 62 and the differential gear 63, the rotation of the telescopic screw 52 will synchronously drive the extension or contraction of the expansion stabilizing plate 53, thereby achieving synchronous adjustment with the height change of the support rod 3. This embodiment significantly improves the stability and safety of the device by adding the expansion stabilizing plate 53 and its related transmission mechanism. The extension or contraction of the expansion stabilizing plate 53 is synchronized with the height change of the support rod 3, which effectively increases the contact area between the device and the ground, thereby improving the stability of the device.

[0056] To sum up, compared with the related technologies, the device adopts a puncture operation guiding auxiliary mechanism to guide the puncture needle along a predetermined trajectory for puncture, reducing the shaking and errors during the puncture process, which helps to improve the accuracy of puncture, reduce the risk of damage to surrounding tissues, and at the same time reduce the doctor's operating difficulty and fatigue.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A liver biopsy puncture auxiliary device, characterized in that: include: A base plate, a support tube, a support rod and a puncture operation guiding auxiliary mechanism, wherein the support tube is fixedly mounted on the top of the base plate, the support rod is slidably mounted in the support tube, the top end of the support rod extends outside the support tube, a height-fixing bolt 1 is mounted on the support tube, the end of the height-fixing bolt 1 abuts against the support rod, and is used to fix the position of the support rod on the support tube, so that the support tube and the support rod can be adjusted in height; The puncture operation guiding auxiliary mechanism is arranged on the support rod and is used to assist the puncture operation during liver puncture biopsy. The puncture operation guiding auxiliary mechanism is located outside the top of the support tube.

2. The liver biopsy puncture auxiliary device according to claim 1, characterized in that: The puncture operation guiding auxiliary mechanism includes a support ring 1 slidably sleeved on the support rod, a height-fixing bolt 2 is bolted on the support ring 1, and an end of the height-fixing bolt 2 abuts against the support rod for fixing the position of the support ring 1 on the support rod, a support arm is fixedly installed on the support ring 1, a storage rectangular tube is fixedly installed on the support arm, a rectangular extension rod is slidably installed in the storage rectangular tube, a fixed-length bolt is threadedly installed on the storage rectangular tube, and the end of the fixed-length bolt abuts against the rectangular extension rod for fixing the position of the rectangular extension rod on the storage rectangular tube, one end of the rectangular extension rod away from the support arm extends to the outside of the storage rectangular tube and is fixedly installed with a U-shaped frame, a rotating shaft 1 is rotatably installed on the U-shaped frame, a connecting arm is fixedly sleeved on the rotating shaft 1, and a puncture guide cylinder is fixedly installed on the connecting arm for guiding the puncture needle for puncture.

3. The liver biopsy puncture auxiliary device according to claim 2, characterized in that: The puncture guide cylinder comprises a puncture needle guide tube, which is fixedly mounted on the connecting arm; an externally threaded tube is fixedly mounted on the bottom of the puncture needle guide tube; a funnel-shaped needle guide port is provided on the top of the puncture needle guide tube for guiding the puncture needle during insertion; a needle threading hole corresponding to the funnel-shaped needle guide port is provided on the puncture needle guide tube and the externally threaded tube, so that the puncture needle passes through the funnel-shaped needle guide port and then through the needle threading hole.

4. The liver biopsy puncture auxiliary device according to claim 3, characterized in that: The diameter of the externally threaded tube is larger than the diameter of the puncture needle guide tube, the externally threaded sleeve of the externally threaded tube is provided with an internally threaded tube, the internally threaded tube is located outside the puncture needle guide tube, a funnel-shaped guide opening is provided at the top of the internally threaded tube, a plurality of contraction openings distributed in a circular array are provided on the inner wall of the puncture needle guide tube, guide columns are slidably installed in the plurality of contraction openings, the ends of the plurality of guide columns that are away from each other extend to the outside of the puncture needle guide tube and are located in the funnel-shaped guide opening, the ends of the plurality of guide columns that are close to each other are fixedly provided with puncture needle positioning ball heads, and the plurality of puncture needle positioning ball heads are Located in the needle hole, multiple puncture needle positioning ball heads cooperate with each other to guide the puncture needle, multiple contraction openings are fixedly installed with contraction springs, the contraction springs are sleeved on the corresponding guide columns, the other ends of the contraction springs are fixedly connected to the corresponding puncture needle positioning ball heads, multiple guide columns are fixedly installed with force-bearing tightening blocks at one end located outside the puncture needle guide tube, and multiple force-bearing tightening blocks are provided with guide inclined surfaces on the outside, and the guide inclined surfaces cooperate with the inclined surfaces of the funnel-shaped guide openings to control the position of the puncture needle positioning ball head in the needle hole when the internal threaded tube moves along the external threaded tube.

5. The liver biopsy puncture auxiliary device according to claim 4, characterized in that: Both ends of the rotating shaft 1 are located outside the U-shaped frame, a locking stud is fixedly installed at one end of the rotating shaft 1, a locking nut is threadedly sleeved on the locking stud, and one end surface of the locking nut is in conflict with the side of the U-shaped frame, so that the rotating shaft 1, the connecting arm and the puncture guide cylinder are fixed at a fixed angle on the U-shaped frame.

6. The liver biopsy puncture auxiliary device according to claim 5, characterized in that: A plurality of operating handles are fixedly mounted on the locking nut, and the plurality of operating handles are distributed along a circular array on the locking nut.

7. The liver biopsy puncture auxiliary device according to claim 5, characterized in that: A second rotating shaft is rotatably installed on the rectangular extension rod, and the rear of the rotating shaft is arranged parallel to the first rotating shaft. Both ends of the second rotating shaft extend outside the rectangular extension rod, and both ends of the second rotating shaft are fixedly installed with hinge pieces. A hand rest located above the rectangular extension rod is fixedly installed on the top of the hinge piece. The hand rest is located on the side of the puncture needle guide tube and is used for resting the arm during the puncture operation.

8. The liver biopsy puncture auxiliary device according to claim 7, characterized in that: An intermediate shaft located between rotating shaft one and rotating shaft two is rotatably mounted on the rectangular extension rod, a synchronous toothed disc is fixedly mounted on one end of the intermediate shaft, synchronous gears are fixedly mounted on the same end of rotating shaft one and rotating shaft two, both of the two synchronous gears are meshed with the synchronous toothed disc located in the middle, the two synchronous gears are of equal proportion and have the same gear speed ratio with the synchronous toothed disc, so that rotating shaft one and rotating shaft two deflect synchronously.

9. The liver biopsy puncture auxiliary device according to claim 2, characterized in that: The support arm extends to one side so that the storage rectangular tube is located on one side of the support rod.

10. The liver biopsy puncture auxiliary device according to claim 8, characterized in that: The locking stud and the synchronous gear on the rotating shaft one are respectively located at two ends of the rotating shaft one.

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