A pericardium puncture liquid extraction device for cardiology department

Abstract

The application belongs to the technical field of medical equipment, and particularly relates to a pericardium puncture liquid extraction device for a cardiology department, which comprises a mounting frame, the inside of the mounting frame is provided with an adjusting part, the inside of the adjusting part is provided with a puncture part, the inside of the adjusting part is further provided with an extraction part, the adjusting part can drive the puncture part and the extraction part inside to rotate in a horizontal direction and to adjust an angle in a vertical direction, the puncture part is inserted into a target position by extension, and the extraction part extracts target liquid after the puncture part punctures into the target position. The application realizes multidimensional control through an adjusting part motor + pneumatic, improves puncture precision through double orientation, guarantees safety through active locking + passive unlocking, quickly evacuates in an emergency, optimizes space through modular integration, and simplifies maintenance through quick assembly and disassembly.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a pericardiocentesis and fluid aspiration device for cardiology. Background Technology

[0002] Pericardial effusion is a common condition in cardiology, and traditional pericardial puncture and aspiration devices have significant limitations. Early devices relied on manual puncture, which lacked positioning accuracy and mechanical stability, making them prone to risks due to operational errors. Existing devices mostly use manual adjustment mechanisms, with puncture angle and depth control depending on operator experience, making it difficult to avoid human error; they also lack dynamic feedback mechanisms, failing to adaptively adjust operating parameters according to tissue characteristics, thus prolonging the operation time. In terms of sterilization and isolation, traditional structures struggle to maintain a sterile environment, and exposed puncture channels increase the risk of infection; components are mostly fixed connections, making disassembly and cleaning inconvenient and maintenance procedures complex. Furthermore, manual operation is arduous, and aspiration efficiency is limited by device capacity; when dealing with large amounts of effusion, repeated operations are required, further increasing the clinical burden. Summary of the Invention

[0003] The purpose of this invention is to provide a pericardial puncture and fluid aspiration device for cardiology, which can achieve multi-dimensional control through the adjustment unit's motor and pneumatic system, and improve puncture accuracy through dual guidance; active locking and passive unlocking ensure safety, and allow for rapid evacuation in emergencies; modular integration optimizes space, and quick loading and unloading simplifies maintenance.

[0004] The specific technical solution adopted by this invention is as follows:

[0005] A pericardiocentesis fluid aspiration device for cardiology includes a mounting frame, an adjustment section inside the mounting frame, a puncture section inside the adjustment section, and an extraction section inside the adjustment section. The adjustment section can drive the puncture section and the extraction section to rotate horizontally and adjust their angle vertically. The puncture section extends to insert into the target position, and the extraction section extracts the target fluid after the puncture section has punctured to the target position.

[0006] The puncture unit includes a puncture motor, a puncture screw, a mounting base, a linkage base, a locking block, an elastic locking element, an unlocking block, an unlocking rod, a linkage ball, an elastic squeezing element, and a puncture needle. The puncture motor is fixedly connected to the interior of the adjustment unit. The puncture screw is fixedly connected to the output end of the puncture motor. The interior of the mounting base is threadedly connected to the outer edge of the puncture screw. The linkage base is located outside the mounting base. The locking block is located inside the linkage base and cooperates with the interior of the mounting base. The elastic locking element is located between the locking blocks. One end of the unlocking block is slidably connected to the locking block. The unlocking rod is rotatably located inside the adjustment unit, and its outer edge cooperates with the other end of the unlocking block. The linkage ball is located inside the adjustment unit and contacts the lower end of the linkage base. The elastic squeezing element is located between the linkage ball and the adjustment unit. The puncture needle is assembled inside the linkage base.

[0007] In a preferred embodiment, the adjusting unit includes a rotating motor, a rotating gear, a rotating ring, an adjusting seat, and a lifting cylinder. The rotating motor is fixedly connected to the mounting frame, the rotating gear is fixedly connected to the output end of the rotating motor, the rotating ring is rotatably disposed inside the mounting frame, the outer edge of the rotating ring meshes with the outer edge of the rotating gear, one end of the adjusting seat is actively connected to the interior of the rotating ring, the lower end of the lifting cylinder is rotatably connected to the interior of the rotating ring, and the output end of the lifting cylinder is rotatably connected to the adjusting seat.

[0008] In a preferred embodiment, the extraction unit includes an extraction motor, an extraction screw, an extraction seat, a fixed seat, a limiting member, an elastic reset member, a storage tube, and an extraction tube. The extraction motor is fixedly connected to the interior of the adjusting seat, the extraction screw is fixedly connected to the output end of the extraction motor, the extraction seat is threadedly connected to the outer edge of the extraction screw, two fixed seats are provided, one of which is fixedly connected to the extraction seat, and the other is fixedly connected to the adjusting seat. The limiting member is slidably disposed inside the fixed seat, the elastic reset member is disposed between the limiting member and the fixed seat, the upper end of the storage tube is fitted inside the upper limiting member, the storage tube is connected to the puncture needle through a flexible tube, the upper end of the extraction tube is slidably disposed inside the storage tube, and the lower end of the extraction tube can be fitted inside the lower limiting member.

[0009] In a preferred embodiment, the interior of one end of the unlocking block is configured as an inclined surface, and the inclined surface is slidably connected to the upper and lower ends of the locking block.

[0010] In a preferred embodiment, the lower end of the locking block is provided with a pressing slope, which cooperates with the upper end of the mounting base.

[0011] In a preferred embodiment, the outer edge of the unlocking rod is provided with a pressing ridge, which cooperates with the other end of the unlocking block, and the protruding distance of the pressing ridge is the same as the distance by which the unlocking block slides and presses the locking block to unlock.

[0012] In a preferred embodiment, a guide block is slidably provided at the lower end of the puncture needle, and limit posts are provided on both sides of the upper end of the puncture needle and both sides of the guide block. The limit posts cooperate with the mounting groove inside the linkage seat, and the mounting groove is set to be vertical.

[0013] In a preferred embodiment, the adjusting seat has a U-shaped guide groove inside, a linkage ball is provided inside one end of the guide groove, and an elastic pressing member is provided inside the other end of the guide groove.

[0014] In a preferred embodiment, both the upper end of the storage tube and the lower end of the extraction tube are provided with limit rods, which cooperate with the interior of the limiting member.

[0015] In a preferred embodiment, the limiting member has a locking groove inside, and the opening inside the locking groove has an inclined surface, and the inside of the locking groove cooperates with the outer edge of the limiting rod.

[0016] The technical effects achieved by this invention are as follows:

[0017] This invention achieves multi-dimensional precise control of the puncture position through an innovative mechanical structure of the adjustment unit. In the horizontal direction, a rotating motor drives a rotating gear to mesh with a rotating ring, causing the adjustment seat and puncture unit to rotate continuously at a certain angle. Combined with the telescopic movement of the lifting cylinder, this allows the adjustment seat to change its angle vertically around the connection point of the rotating ring, thereby enabling the puncture unit to complete omnidirectional posture adjustments from horizontal to inclined. Through a composite adjustment method of "motor drive + pneumatic assistance," the limitations of traditional manual adjustment are overcome, allowing the puncture needle to be precisely aligned with the pericardial effusion target area. Simultaneously, the linkage seat of the puncture unit, through the rigid engagement of upper and lower limit posts and the mounting groove, and the sliding support of the guide block on the lower end of the puncture needle, constructs a dual guiding constraint system. This effectively counteracts radial forces during the puncture process, preventing the slender needle from bending or vibrating, ensuring that the needle tip always feeds in a straight line along the preset path, significantly improving the accuracy and stability of the puncture position in minimally invasive surgery.

[0018] This invention incorporates multiple safety protection structures in both the puncture and extraction sections, forming a closed-loop safety system of "active locking + passive unlocking." The locking block of the puncture section and the mounting seat employ a beveled fit design. When the puncture motor drives the mounting seat forward, the locking block automatically engages with the locking groove of the mounting seat through the tension of the elastic locking element, achieving rigid fixation between the linkage seat and the mounting seat. In emergency situations requiring rapid retraction of the puncture needle, the operator rotates the unlocking lever. The squeezing ridge on its outer edge pushes the unlocking block to slide, forcing the locking block to contract through the beveled transmission, thus releasing the locking state. At this time, the elastic squeezing element pushes the linkage ball to lift the linkage seat, enabling rapid withdrawal of the puncture needle.

[0019] This invention significantly improves the convenience of clinical operation and the environmental adaptability of the device through modular and spatially integrated design. The adjustment unit integrates horizontal rotation and vertical angle adjustment functions into the mounting frame. The U-shaped guide groove inside the adjustment seat directly accommodates the linkage ball and elastic compression component, eliminating the need for external support components and reducing space occupation. The extraction unit adopts a symmetrical layout of "double fixed seats + limiting components," transmitting the power of the extraction motor to the extraction tube through the extraction screw and extraction seat, achieving integration of the extraction action and limiting control. Compared with the traditional separate structure, this shortens the transmission path and improves power transmission efficiency. Simultaneously, the storage tube and extraction tube can be quickly installed and removed through the elastic engagement of the limiting components, allowing for tool-free component replacement and simplifying postoperative cleaning and maintenance procedures. Attached Figure Description

[0020] Figure 1 This is an overall schematic diagram of an embodiment of the present invention;

[0021] Figure 2 This is an exploded view of an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the adjustment seat according to an embodiment of the present invention;

[0023] Figure 4 This is an exploded view of the interior of the adjustment seat according to an embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional view of the puncture site according to an embodiment of the present invention;

[0025] Figure 6 This is an exploded view of the puncture site according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the locking block shrinking according to an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the locking block extending according to an embodiment of the present invention;

[0028] Figure 9 This is an exploded view of the extraction unit according to an embodiment of the present invention;

[0029] Figure 10 This is a cross-sectional view of the extraction section according to an embodiment of the present invention.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Mounting bracket; 2. Adjustment section; 201. Rotating motor; 202. Rotating gear; 203. Rotating ring; 204. Adjusting seat; 205. Lifting cylinder; 3. Puncture section; 301. Puncture motor; 302. Puncture screw; 303. Mounting seat; 304. Linkage seat; 305. Locking block; 306. Elastic locking element; 307. Unlocking block; 308. Unlocking rod; 309. Linkage ball; 3010. Elastic squeezing element; 3011. Puncture needle; 4. Extraction section; 401. Extraction motor; 402. Extraction screw; 403. Extraction seat; 404. Fixing seat; 405. Limiting element; 406. Elastic reset element; 407. Storage tube; 408. Extraction tube. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0036] Please see Figures 1 to 10As shown, the present invention provides a pericardial puncture and fluid aspiration device for cardiology, including a mounting frame 1. The mounting frame 1 is provided with an adjustment part 2, the adjustment part 2 is provided with a puncture part 3, and the adjustment part 2 is also provided with an extraction part 4. The adjustment part 2 can drive the puncture part 3 and the extraction part 4 to rotate in the horizontal direction and adjust the angle in the vertical direction. The puncture part 3 extends to insert into the target position, and the extraction part 4 extracts the target fluid after the puncture part 3 has punctured to the target position.

[0037] The puncture unit 3 includes a puncture motor 301, a puncture screw 302, a mounting base 303, a linkage base 304, a locking block 305, an elastic locking element 306, an unlocking block 307, an unlocking rod 308, a linkage ball 309, an elastic compression element 3010, and a puncture needle 3011. The puncture motor 301 is fixedly connected to the interior of the adjustment unit 2. The puncture screw 302 is fixedly connected to the output end of the puncture motor 301. The interior of the mounting base 303 is threadedly connected to the outer edge of the puncture screw 302. The linkage base 304 is located outside the mounting base 303. The locking block 305 is located on the linkage base 301. Inside the 4, the locking block 305 cooperates with the interior of the mounting base 303, the elastic locking member 306 is disposed between the locking blocks 305, one end of the unlocking block 307 is slidably connected to the locking block 305, the unlocking rod 308 is rotatably disposed inside the adjusting part 2, and the outer edge of the unlocking rod 308 cooperates with the other end of the unlocking block 307, the linkage ball 309 is disposed inside the adjusting part 2, and the linkage ball 309 contacts the lower end of the linkage seat 304, the elastic squeezing member 3010 is disposed between the linkage ball 309 and the adjusting part 2, and the puncture needle 3011 is assembled inside the linkage seat 304.

[0038] Specifically, the adjustment unit 2 drives the internal puncture unit 3 and extraction unit 4 to rotate horizontally, thereby changing the horizontal puncture angle of the puncture unit 3. At the same time, the adjustment unit 2 can also change the vertical angle of the puncture unit 3, thereby achieving the adjustment of the puncture angle of the puncture unit 3.

[0039] After the puncture angle of the puncture section 3 is adjusted, the output end of the puncture motor 301 drives the puncture screw 302 to rotate. The rotation of the puncture screw 302 drives the threaded mounting seat 303 and the linkage seat 304 to move together, so that the linkage seat 304 drives the puncture needle 3011 to extend, so that the puncture needle 3011 can be inserted into the target position to achieve puncture of the target.

[0040] Then, the pericardial effusion at the puncture needle 3011 is extracted through the extraction section 4 and stored.

[0041] In the event of an emergency needle removal, the unlocking lever 308 can be rotated to press the unlocking block 307, which in turn presses the locking block 305, causing the locking block 305 to retract into the interior of the linkage seat 304. This releases the fixation between the linkage seat 304 and the mounting seat 303. At this time, the elastic compression member 3010 releases its internal elastic force to compress the linkage ball 309, which in turn compresses the linkage seat 304. This causes the linkage seat 304 to drive the puncture needle 3011 to be promptly withdrawn from the patient's body, achieving a puncture release operation without the need for the puncture motor 301 to control it.

[0042] When the piercing motor 301 moves in the reverse direction, the mounting seat 303 can move upward along the piercing screw 302, so that after the mounting seat 303 contacts the locking block 305, it can squeeze the locking block 305 to retract into the interior of the linkage seat 304 until the mounting seat 303 is inserted into the interior of the linkage seat 304. At this time, the locking block 305 is squeezed by the elastic locking member 306 and extends out of the interior of the linkage seat 304 and inserts into the interior of the mounting seat 303, thus completing the combination locking between the mounting seat 303 and the linkage seat 304.

[0043] Please see Figure 1 and Figure 2 As shown, the adjustment unit 2 includes a rotating motor 201, a rotating gear 202, a rotating ring 203, an adjusting seat 204, and a lifting cylinder 205. The rotating motor 201 is fixedly connected to the mounting frame 1, the rotating gear 202 is fixedly connected to the output end of the rotating motor 201, the rotating ring 203 is rotatably disposed inside the mounting frame 1, the outer edge of the rotating ring 203 meshes with the outer edge of the rotating gear 202, one end of the adjusting seat 204 is actively connected to the inside of the rotating ring 203, the lower end of the lifting cylinder 205 is rotatably connected to the inside of the rotating ring 203, and the output end of the lifting cylinder 205 is rotatably connected to the adjusting seat 204.

[0044] The rotating motor 201 is started, and its output end drives the rotating gear 202 to rotate. The rotating gear 202 meshes with the outer edge of the rotating ring 203, driving the rotating ring 203 to rotate horizontally inside the mounting bracket 1. The adjusting seat 204 rotates synchronously with the rotating ring 203, realizing the horizontal angle adjustment of the puncture section 3 and the extraction section 4.

[0045] The lower end of the lifting cylinder 205 is rotatably connected to the inside of the rotating ring 203, and the output end is rotatably connected to the adjusting seat 204. When the lifting cylinder 205 extends or retracts, it pushes the adjusting seat 204 to rotate around the connection point with the rotating ring 203, thereby changing the vertical tilt angle of the adjusting seat 204. Finally, through the change in the posture of the adjusting seat 204, the puncture part 3 and the extraction part 4 are driven to complete the vertical angle adjustment.

[0046] Horizontal rotation is achieved through "rotating motor 201 + rotating gear 202", and vertical angle adjustment is achieved through "lifting cylinder 205 extension and retraction". The two work together to complete the multi-dimensional positioning of the puncture position.

[0047] Please see Figures 9 to 10 As shown, the extraction unit 4 includes an extraction motor 401, an extraction screw 402, an extraction seat 403, a fixing seat 404, a limiting member 405, an elastic reset member 406, a storage tube 407, and an extraction tube 408. The extraction motor 401 is fixedly connected to the interior of the adjusting seat 204. The extraction screw 402 is fixedly connected to the output end of the extraction motor 401. The extraction seat 403 is threadedly connected to the outer edge of the extraction screw 402. Two fixing seats 404 are provided, one of which, located at the lower part, is fixedly connected to the extraction seat 403. Another upper fixed seat 404 is fixedly connected to the adjusting seat 204. The limiting member 405 is slidably disposed inside the fixed seat 404. The elastic reset member 406 is disposed between the limiting member 405 and the fixed seat 404. The upper end of the storage tube 407 is assembled inside the upper limiting member 405. The storage tube 407 is connected to the puncture needle 3011 through a flexible tube. The upper end of the extraction tube 408 is slidably disposed inside the storage tube 407. The lower end of the extraction tube 408 can be assembled inside the lower limiting member 405.

[0048] After the extraction motor 401 is started, its output end drives the extraction screw 402 to rotate. The extraction screw 402 is threadedly connected to the extraction seat 403, and the rotation of the screw is converted into the axial linear motion of the extraction seat 403.

[0049] During the movement of the extraction seat 403, the fixed seat 404 located at the bottom can be moved together. The movement of the fixed seat 404 can pull the extraction tube 408 to slide inside the storage tube 407, so that a negative pressure is formed inside the storage tube 407, and the pericardial effusion is sucked into the storage tube 407 through the puncture needle 3011 and the tubing.

[0050] After extraction is completed, the storage tube 407 and extraction tube 408 can be moved out of the interior of the fixing base 404, and the limiting member 405 can be released from limiting and fixing the storage tube 407 and extraction tube 408.

[0051] Please see Figure 7 and Figure 8 As shown, the interior of one end of the unlocking block 307 is set as an inclined surface, and the inclined surface is slidably connected to the upper and lower ends of the locking block 305.

[0052] When the unlocking lever 308 is rotated, the pressing ridge on its outer edge contacts the other end of the unlocking block 307 and pushes the unlocking block 307 to slide horizontally. The inclined surface at one end of the unlocking block 307 slides in contact with the upper and lower ends of the locking block 305. As the unlocking block 307 moves, the inclined surface applies a lateral pressing force to the locking block 305 through sliding friction. Under the pushing force of the inclined surface, the locking block 305 retracts into the linkage seat 304, compressing the elastic locking members 306 on both sides, and releasing the locking block 305 from the mounting seat 303. After the locking block 305 retracts, the rigid connection between the mounting seat 303 and the linkage seat 304 is released. The mechanical trigger unlocking mechanism ensures a rapid response in emergency situations.

[0053] Please see Figure 8 As shown, the lower end of the locking block 305 is provided with a pressing slope, which cooperates with the upper end of the mounting base 303.

[0054] The locking block 305 is slidably disposed inside the linkage seat 304, with the extrusion slope at its lower end facing the mounting seat 303, and the elastic locking members 306 on both sides in a naturally extended state, pushing the locking block 305 to protrude outward.

[0055] When the mounting base 303 moves toward the linkage base 304, the upper end of the mounting base 303 first contacts the inclined surface of the lower end of the locking block 305. The corresponding structure at the upper end of the mounting base 303 generates a reaction force on the pressing inclined surface of the locking block 305, forcing the locking block 305 to overcome the elastic force of the elastic locking member 306 and retract into the linkage base 304.

[0056] As the mounting base 303 continues to move upward, once the upper end of the mounting base 303 passes the locking block 305, the pressing slope is no longer under force, the elastic locking element 306 releases its elastic force, and pushes the locking block 305 outward. The lower end of the locking block 305 is engaged in the preset locking groove or limiting structure of the mounting base 303, thereby achieving rigid fixation between the linkage seat 304 and the mounting base 303. Through the cooperation between the pressing slope at the lower end of the locking block 305 and the upper end of the mounting base 303, the axial movement is converted into the radial contraction and reset of the locking block 305.

[0057] Please see Figure 7 and Figure 8 As shown, the outer edge of the unlocking lever 308 is provided with a pressing ridge, which cooperates with the other end of the unlocking block 307, and the protrusion distance of the pressing ridge is the same as the distance by which the unlocking block 307 slides to press the locking block 305 to unlock.

[0058] When unlocking is required, the operator rotates the unlocking lever 308. The pressing ridge on its outer edge rotates synchronously with the unlocking lever 308. The protruding structure of the pressing ridge gradually contacts the other end plane of the unlocking block 307, and begins to apply axial thrust.

[0059] The protruding distance of the squeezing ridge is mechanically matched with the sliding distance of the unlocking block 307. As the unlocking rod 308 rotates, the squeezing ridge continuously pushes the unlocking block 307 to slide in the horizontal direction. The inclined surface at one end of the unlocking block 307 simultaneously squeezes the locking block 305, pushing the locking block 305 to contract and compress the elastic locking member 306 inside the linkage seat 304.

[0060] When the extrusion ridge rotates to its maximum stroke, the unlocking block 307 slides to the fully unlocked position, and the locking block 305 completely disengages from the locking groove of the mounting seat 303. At this time, the elastic extrusion member 3010 pushes the linkage ball 309 to the linkage seat 304, causing the puncture needle 3011 to retract quickly, thus completing the unlocking action.

[0061] The mechanical design of the squeezing ridge achieves the transformation from "rotational motion → linear thrust → precise sliding". The matching of its protruding distance with the sliding distance of the unlocking block 307 ensures quantitative control of the unlocking process, avoids over-unlocking or incomplete unlocking, and improves the reliability of emergency operations.

[0062] Please see Figures 3 to 6 As shown, a guide block is slidably provided at the lower end of the puncture needle 3011, and limit posts are provided on both sides of the upper end of the puncture needle 3011 and both sides of the guide block. The limit posts cooperate with the mounting groove inside the linkage seat 304.

[0063] The lower end of the puncture needle 3011 is nested with a guide block through a sliding pair to form a "needle body-guide block" linkage structure. It has a double limit post configuration: upper limit posts are set on both sides of the upper end of the puncture needle 3011, and lower limit posts are set on both sides of the guide block. The two sets of limit posts are respectively embedded in the mounting groove inside the linkage seat 304 to form a "two-point" rigid constraint.

[0064] The mounting groove rigidly limits the sliding trajectory of the limiting post, ensuring that the puncture needle 3011 can only move in a straight line along the mounting groove direction, preventing horizontal deviation or rotation. As the puncture needle 3011 moves down, the guide block slides synchronously along the needle body, and the lower limiting post slides in the mounting groove. The radial support of the guide block counteracts the bending moment of the puncture needle 3011, preventing the slender needle body from vibrating.

[0065] By using the mechanical constraints of "upper and lower limit posts + mounting groove" and the dynamic support of guide blocks, a two-stage guide system for the puncture needle 3011 is constructed. This system not only ensures the accuracy of linear motion but also improves structural stability by distributing the force, thus solving the problems of easy deviation and vibration of the traditional puncture needle 3011.

[0066] Please see Figure 4 and Figure 5 As shown, the interior of the adjusting seat 204 is provided with a U-shaped guide groove, a linkage ball 309 is provided at one end of the guide groove, and an elastic extrusion member 3010 is provided at the other end of the guide groove.

[0067] The guide groove is directly formed inside the adjusting seat 204. The linkage ball 309 and the elastic extrusion member 3010 are arranged at both ends of the groove axis, forming a "fully integrated in-groove component" structure. This avoids the space occupied by external additional parts. The elastic extrusion member 3010 is compressed at the end of the guide groove, and its elastic force acts directly on the linkage ball 309. No additional transmission mechanism is required, achieving zero space waste in the "force-motion" conversion.

[0068] By using the design of "integrated tank body + curved motion path + composite component functions", the guiding, driving and resetting functions are compressed into the limited space inside the adjustment seat 204, which solves the problem of "volume redundancy caused by the dispersed arrangement of multiple components" in traditional devices.

[0069] Please see Figure 9 and Figure 10 As shown, both the upper end of the storage tube 407 and the lower end of the extraction tube 408 are provided with limit rods, which cooperate with the interior of the limit member 405.

[0070] The end of the limiting rod is provided with a limiting boss, which engages with the annular groove in the inner hole of the limiting member 405, so that the storage tube 407 and the extraction tube 408 maintain their initial relative positions and prevent accidental sliding in non-operational state.

[0071] Please see Figure 9 and Figure 10 As shown, the limiting member 405 has a locking groove inside, and the opening inside the locking groove has a bevel. The inside of the locking groove cooperates with the outer edge of the limiting rod.

[0072] When the storage tube 407 and the extraction tube 408 are removed from the limiting member 405, the limiting rod can press against the inclined surface at the opening of the limiting member 405, so that the limiting member 405 can retract into the interior of the fixed seat 404, and the limiting member 405 releases the limiting member 405 from the limiting rod.

[0073] Simultaneously, when the storage tube 407 and the extraction tube 408 are moved into the interior of the limiting member 405, the limiting rod can also squeeze the inclined surface at the opening of the limiting member 405, causing the limiting member 405 to retract into the interior of the fixing seat 404 until the limiting rod is completely inside the interior of the limiting member 405, thereby realizing the removal and convenient installation of the storage tube 407 and the extraction tube 408.

[0074] The working principle of this invention is as follows: the adjustment part 2 drives the internal puncture part 3 and extraction part 4 to rotate horizontally, thereby changing the horizontal puncture angle of the puncture part 3. At the same time, the adjustment part 2 can also change the vertical angle of the puncture part 3, thereby realizing the adjustment of the puncture angle of the puncture part 3.

[0075] After the puncture angle of the puncture section 3 is adjusted, the output end of the puncture motor 301 drives the puncture screw 302 to rotate. The rotation of the puncture screw 302 drives the threaded mounting seat 303 and the linkage seat 304 to move together, so that the linkage seat 304 drives the puncture needle 3011 to extend, so that the puncture needle 3011 can be inserted into the target position to achieve puncture of the target.

[0076] Then, the pericardial effusion at the puncture needle 3011 is extracted through the extraction section 4 and stored.

[0077] In the event of an emergency needle removal, the unlocking lever 308 can be rotated to press the unlocking block 307, which in turn presses the locking block 305, causing the locking block 305 to retract into the interior of the linkage seat 304. This releases the fixation between the linkage seat 304 and the mounting seat 303. At this time, the elastic compression member 3010 releases its internal elastic force to compress the linkage ball 309, which in turn compresses the linkage seat 304. This causes the linkage seat 304 to drive the puncture needle 3011 to be promptly withdrawn from the patient's body, achieving a puncture release operation without the need for the puncture motor 301 to control it.

[0078] When the piercing motor 301 moves in the reverse direction, the mounting seat 303 can move upward along the piercing screw 302, so that after the mounting seat 303 contacts the locking block 305, it can squeeze the locking block 305 to retract into the interior of the linkage seat 304 until the mounting seat 303 is inserted into the interior of the linkage seat 304. At this time, the locking block 305 is squeezed by the elastic locking member 306 and extends out of the interior of the linkage seat 304 and inserts into the interior of the mounting seat 303, thus completing the combination locking between the mounting seat 303 and the linkage seat 304.

[0079] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A pericardiocentesis device for use in cardiology, characterized by: The device comprises a mounting frame, an adjusting part inside the mounting frame, a puncture part inside the adjusting part, and an extraction part inside the adjusting part, the adjusting part can drive the puncture part and the extraction part to rotate horizontally and adjust the angle vertically, the puncture part can insert a puncture needle into a target position by extending, and the extraction part can extract a target liquid after the puncture part punctures the target position; The puncture part comprises a puncture motor, the output end of the puncture motor is fixedly connected with a puncture screw, the outer edge of the puncture screw is threadedly connected with a mounting seat, the outside of the mounting seat is assembled with a linkage seat, the inside of the linkage seat is provided with locking blocks, the locking blocks are matched with the inside of the mounting seat, the locking blocks are provided with elastic locking members, the locking blocks are slidingly connected with unlocking blocks, the other end of the unlocking blocks is provided with an unlocking rod, the unlocking rod is rotationally arranged in the inside of the adjusting part, the lower end of the linkage seat is provided with a plurality of linkage balls, the linkage balls are arranged in the inside of the adjusting part and are in contact with the lower end of the linkage seat, the linkage balls and the adjusting part are provided with elastic extrusion members, and the inside of the linkage seat is assembled with a puncture needle. The outer edge of the unlocking rod is provided with an extrusion ridge, the extrusion ridge is matched with the other end of the unlocking block, and the protruding distance of the extrusion ridge is the same as the distance of the unlocking block slidingly extruding the locking block to unlock. In the case of emergency needle extraction, the unlocking rod can be rotated to extrude the unlocking block, so that the unlocking block extrudes the locking block to make the locking block retract into the inside of the linkage seat, thereby releasing the fixation between the linkage seat and the mounting seat, at this time, the elastic extrusion members release the internal elastic force to extrude the linkage balls, so that the linkage balls extrude the linkage seat to make the linkage seat drive the puncture needle to be extracted from the patient's body in time. The inside of one end of the unlocking block is provided with an inclined surface, and the upper and lower ends of the locking block are slidingly connected with the inclined surface. When the unlocking rod is rotated, the extrusion ridge on the outer edge of the unlocking rod is in contact with the other end of the unlocking block and pushes the unlocking block to slide horizontally, the inclined surface on one end of the unlocking block is in sliding contact with the upper and lower ends of the locking block, and as the unlocking block moves, the inclined surface applies a lateral extrusion force to the locking block through sliding friction, the locking block retracts into the inside of the linkage seat under the action of the inclined surface, compresses the elastic locking members on both sides, releases the clamping fixation between the unlocking block and the mounting seat, and after the locking block retracts, the rigid connection between the mounting seat and the linkage seat is released.

2. The device as claimed in claim 1, wherein: The adjusting part comprises a rotating motor, a rotating gear, a rotating ring, an adjusting seat and a lifting cylinder, the rotating motor is fixedly connected with the mounting frame, the rotating gear is fixedly connected with the output end of the rotating motor, the rotating ring is rotationally arranged in the inside of the mounting frame, the outer edge of the rotating ring is engaged with the outer edge of the rotating gear, one end of the adjusting seat is drivingly connected with the inside of the rotating ring, and the lower end of the lifting cylinder is rotationally connected with the inside of the rotating ring.

3. The device as claimed in claim 1, wherein: Said extraction part includes extraction motor, extraction screw rod, extraction seat, fixed seat, limiting piece, elastic reset piece, storage tube and extraction tube, the extraction motor is fixedly connected with the inside of adjustment seat, the extraction screw rod is fixedly connected with the output end of extraction motor, the extraction seat is threadedly connected with the outer edge of extraction screw rod, the fixed seat is provided with two, one of which is fixedly connected with the extraction seat, the other is fixedly connected with the adjustment seat, the limiting piece is slidably arranged in the inside of fixed seat, the elastic reset piece is arranged between the limiting piece and the fixed seat, the upper end of the storage tube is assembled in the inside of the limiting piece at the upper part, the storage tube is communicated with the puncture needle through the hose, the upper end of the extraction tube is slidably arranged in the inside of the storage tube, and the lower end of the extraction tube can be assembled in the inside of the limiting piece at the lower part.

4. The device as claimed in claim 1, wherein: The lower end of the puncture needle is slidably provided with a guide block, the two sides of the upper end of the puncture needle and the two sides of the guide block are provided with limiting columns, the limiting columns are matched with the mounting groove in the inside of the linkage seat, and the whole mounting groove is provided in vertical shape.

5. The device as claimed in claim 2, wherein: The inside of the adjustment seat is provided with a U-shaped guide groove, one end of the guide groove is provided with a linkage ball in the inside, and the other end of the guide groove is provided with an elastic extrusion piece in the inside.

6. The device as claimed in claim 3, wherein: The upper end of the storage tube and the lower end of the extraction tube are provided with limiting rods, and the limiting rods are matched with the inside of the limiting piece.

7. The device as claimed in claim 3, wherein: The inside of the limiting piece is provided with a locking groove, the opening in the inside of the locking groove is provided with an inclined surface, and the inside of the locking groove is matched with the outer edge of the limiting rod.

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