Cardiocentesis liquid extraction device for department of cardiology

Abstract

The invention belongs to the technical field of medical equipment, and particularly relates to a cardiology department pericardium puncture liquid extraction device which comprises a mounting frame, an adjusting part is arranged in the mounting frame, a puncture part is arranged in the adjusting part, and an extraction part is further arranged in the adjusting part. The adjusting part can drive the puncture part and the extraction part in the adjusting part to rotate in the horizontal direction and adjust the angle in the vertical direction, the puncture part stretches out to insert a puncture into a target position, and the extraction part extracts target liquid after the puncture part punctures the target position. Multi-dimensional control is achieved through an adjusting part motor and pneumatics, and the puncture precision is improved through double guiding; the safety is guaranteed by active locking and passive unlocking, and rapid evacuation is realized in emergency; modularization integration optimizes space, assembly and disassembly are fast, and maintenance is simplified.

Description

Technical Field

[0001] The invention belongs to the technical field of medical equipment, and in particular relates to a pericardial puncture and fluid extraction device for cardiology. Background Art

[0002] Pericardial effusion is a common condition in cardiology, and traditional pericardiocentesis and fluid extraction devices have significant limitations. Early equipment operation relied on manual puncture, which had insufficient positioning accuracy and poor mechanical stability, and was prone to risks due to operational deviations. Existing devices mostly use manual adjustment mechanisms, and the control of puncture angle and depth relies on the operator's experience, which makes it difficult to avoid human errors; the lack of a dynamic feedback mechanism makes it impossible to adaptively adjust operating parameters according to tissue characteristics, which prolongs the operation time. In terms of disinfection and isolation, traditional structures make it difficult to maintain a sterile environment, and the exposure of the puncture channel easily increases the risk of infection; most components are fixedly connected, which is inconvenient to disassemble and clean, and the maintenance process is complicated. In addition, manual operation is intensive, and the efficiency of fluid extraction is limited by the capacity of the instrument. Repeated operations are required when facing a large amount of effusion, further increasing the clinical burden. Summary of the Invention

[0003] The purpose of the present invention is to provide a pericardial puncture and fluid extraction device for cardiology, which can achieve multi-dimensional control through the adjustment part motor + pneumatics, and dual guidance to improve puncture accuracy; active locking + passive unlocking to ensure safety and rapid evacuation in an emergency; modular integration optimizes space, and rapid assembly and disassembly simplifies maintenance.

[0004] The technical solutions adopted by the present invention are as follows: A pericardial puncture and fluid extraction device for cardiology includes a mounting frame, an adjustment portion disposed within the mounting frame, a puncture portion disposed within the adjustment portion, and an extraction portion disposed within the adjustment portion. The adjustment portion is capable of driving the puncture portion and the extraction portion within the adjustment portion to rotate horizontally and adjust the angle vertically. The puncture portion extends to insert the puncture portion into a target position, and the extraction portion extracts the target fluid after the puncture portion punctures the target position. The puncture part includes a puncture motor, a puncture screw, a mounting seat, a linkage seat, a locking block, an elastic locking piece, an unlocking block, an unlocking rod, a linkage ball, an elastic extrusion piece and a puncture needle. The puncture motor is fixedly connected to the interior of the adjusting part, the puncture screw is fixedly connected to the output end of the puncture motor, the interior of the mounting seat is threadedly connected to the outer edge of the puncture screw, the linkage seat is assembled on the outside of the mounting seat, the locking block is arranged inside the linkage seat, and the locking block cooperates with the interior of the mounting seat, the elastic locking piece is arranged between the locking block, one end of the unlocking block is slidably connected to the locking block, the unlocking rod is rotatably arranged inside the adjusting part, and the outer edge of the unlocking rod cooperates with the other end of the unlocking block, the linkage ball is arranged inside the adjusting part, and the linkage ball contacts the lower end of the linkage seat, the elastic extrusion piece is arranged between the linkage ball and the adjusting part, and the puncture needle is assembled inside the linkage seat.

[0005] In a preferred embodiment, the adjustment part includes a rotating motor, a rotating gear, a rotating ring, an adjustment 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 arranged inside the mounting frame, the outer edge of the rotating ring is engaged with the outer edge of the rotating gear, one end of the adjustment seat is actively dry-connected to the inside of the rotating ring, the lower end of the lifting cylinder is rotatably connected to the inside of the rotating ring, and the output end of the lifting cylinder is rotatably connected to the adjustment seat.

[0006] In a preferred embodiment, the extraction part includes an extraction motor, an extraction screw, an extraction seat, a fixing seat, a limiter, an elastic reset member, a storage tube and an extraction tube, the extraction motor is fixedly connected to the inside of the adjustment 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 fixing seats are provided, one of which is fixedly connected to the extraction seat, and the other is fixedly connected to the adjustment seat, the limiter is slidably arranged inside the fixing seat, the elastic reset member is arranged between the limiter and the fixing seat, the upper end of the storage tube is assembled inside the limiter at the upper part, the storage tube is connected to the puncture needle through a hose, the upper end of the extraction tube is slidably arranged inside the storage tube, and the lower end of the extraction tube can be assembled inside the limiter at the lower part.

[0007] In a preferred solution, the interior of one end of the unlocking block is provided with an inclined surface, and the inclined surface is slidably connected to the upper and lower ends of the locking block.

[0008] In a preferred embodiment, the lower end of the locking block is provided with an extrusion slope, and the slope cooperates with the upper end of the mounting seat.

[0009] In a preferred embodiment, an extrusion ridge is protruding from the outer edge of the unlocking rod, and the extrusion ridge cooperates with the other end of the unlocking block, and the protruding distance of the extrusion ridge is the same as the distance that the unlocking block slides to squeeze the locking block to unlock.

[0010] In a preferred embodiment, a guide block is slidingly provided at the lower end of the puncture needle, and limiting columns are provided on both sides of the upper end of the puncture needle and both sides of the guide block. The limiting columns cooperate with the mounting groove inside the linkage seat, and the overall mounting groove is set to a vertical shape.

[0011] In a preferred embodiment, a U-shaped guide groove is provided inside the adjustment seat, a linkage ball is provided inside one end of the guide groove, and an elastic extrusion piece is provided inside the other end of the guide groove.

[0012] In a preferred solution, both the upper end of the storage tube and the lower end of the extraction tube are provided with limiting rods, and the limiting rods cooperate with the interior of the limiting member.

[0013] In a preferred embodiment, a locking groove is provided inside the limiting member, an opening inside the locking groove is provided with an inclined surface, and the inside of the locking groove matches the outer edge of the limiting rod.

[0014] The technical effects achieved by the present invention are: The present invention realizes multi-dimensional precise control of the puncture position through the innovative mechanical structure of the adjustment part. In the horizontal direction, the rotating motor drives the rotating gear to engage with the rotating ring, driving the adjustment seat and the puncture part to rotate continuously in degrees, and cooperates with the telescopic movement of the lifting cylinder to make the adjustment seat realize vertical angle change around the connection point of the rotating ring, thereby driving the puncture part to complete all-round posture adjustment from horizontal to tilted; through the composite adjustment method of "motor drive + pneumatic assistance", it breaks through the operational limitations of traditional manual adjustment, so that the puncture needle can be accurately aligned with the target area of ​​pericardial effusion; at the same time, the linkage seat of the puncture part constructs a dual guide constraint system through the rigid cooperation of the upper and lower limit columns and the mounting slot, and the sliding support of the guide block on the lower end of the puncture needle, which effectively offsets the radial force during the puncture process, avoids bending or vibration of the slender needle body, and ensures 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; The present invention sets multiple safety protection structures in the puncture part and the extraction part respectively, forming a closed-loop safety system of "active locking + passive unlocking". The locking block of the puncture part and the mounting seat adopt an inclined surface matching design. When the puncture motor drives the mounting seat to advance, the locking block automatically snaps into the locking groove of the mounting seat through the tension of the elastic locking member, realizing the rigid fixation of the linkage seat and the mounting seat; when encountering an emergency and requiring the rapid withdrawal of the puncture needle, the operator rotates the unlocking lever, and the extrusion ridge on its outer edge pushes the unlocking block to slide, forcing the locking block to contract through the inclined surface transmission, releasing the locked state. At this time, the elastic extrusion member pushes the linkage ball to lift the linkage seat, realizing the rapid withdrawal of the puncture needle; The present invention significantly improves the convenience of clinical operation and the environmental adaptability of the instrument through functional modularization and spatial integration design. The adjustment part integrates the horizontal rotation and vertical angle adjustment functions into the mounting frame, and the U-shaped guide groove inside the adjustment seat directly accommodates the linkage ball and the elastic extrusion part, eliminating the external support components and reducing space occupancy. The extraction part adopts a symmetrical layout of "double fixed seat + limiter", and transmits the power of the extraction motor to the extraction tube through the extraction screw and the extraction seat, realizing the integration of the liquid extraction action and the limit control, shortening the transmission path compared to the traditional discrete structure, and improving the power transmission efficiency. At the same time, the storage tube and the extraction tube are quickly assembled and unassembled through the elastic engagement of the limiter, and the component replacement can be completed without tools, which simplifies the postoperative cleaning and maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of an embodiment of the present invention; Figure 2 It is an overall exploded view of an embodiment of the present invention; Figure 3 This is a schematic diagram of an adjustment seat according to an embodiment of the present invention; Figure 4 This is an exploded view of the interior of the adjustment seat according to an embodiment of the present invention; Figure 5 is a cross-sectional view of the puncture portion of an embodiment of the present invention; Figure 6 This is an exploded view of the puncture portion of an embodiment of the present invention; Figure 7 is a schematic diagram of the locking block contraction of an embodiment of the present invention; Figure 8 is a schematic diagram of an embodiment of the present invention showing a locking block extending; Figure 9 is an exploded view of an extraction portion of an embodiment of the present invention; Figure 10 This is a cross-sectional view of the extraction portion of an embodiment of the present invention.

[0016] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Mounting frame; 2. Adjusting part; 201. Rotating motor; 202. Rotating gear; 203. Rotating ring; 204. Adjusting seat; 205. Lifting cylinder; 3. Puncture part; 301. Puncture motor; 302. Puncture screw; 303. Mounting seat; 304. Linkage seat; 305. Locking block; 306. Elastic locking part; 307. Unlocking block; 308. Unlocking rod; 309. Linkage ball; 3010. Elastic extrusion part; 3011. Puncture needle; 4. Extraction part; 401. Extraction motor; 402. Extraction screw; 403. Extraction seat; 404. Fixed seat; 405. Limiting part; 406. Elastic reset part; 407. Storage tube; 408. Extraction tube. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, the term "one embodiment" or "embodiment" 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 various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive of other embodiments.

[0020] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0021] See also Figures 1 to 10 As shown, the present invention provides a pericardial puncture and fluid extraction device for cardiology, comprising a mounting frame 1, an adjusting portion 2 being provided inside the mounting frame 1, a puncture portion 3 being provided inside the adjusting portion 2, and an extraction portion 4 being provided inside the adjusting portion 2. The adjusting portion 2 can drive the puncture portion 3 and the extraction portion 4 inside to rotate horizontally and adjust the angle in the vertical direction. The puncture portion 3 is extended to insert the puncture portion into the target position, and the extraction portion 4 extracts the target fluid after the puncture portion 3 punctures the target position. The puncture part 3 includes a puncture motor 301, a puncture screw 302, a mounting seat 303, a linkage seat 304, a locking block 305, an elastic locking piece 306, an unlocking block 307, an unlocking rod 308, a linkage ball 309, an elastic extrusion piece 3010 and a puncture needle 3011. The puncture motor 301 is fixedly connected to the interior of the adjustment part 2, the puncture screw 302 is fixedly connected to the output end of the puncture motor 301, the interior of the mounting seat 303 is threadedly connected to the outer edge of the puncture screw 302, the linkage seat 304 is assembled on the outside of the mounting seat 303, and the locking block 305 is arranged on the linkage seat 30 4, and the locking block 305 cooperates with the interior of the mounting seat 303, the elastic locking piece 306 is arranged 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 arranged inside the adjusting portion 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 arranged inside the adjusting portion 2, and the linkage ball 309 contacts the lower end of the linkage seat 304, the elastic extrusion piece 3010 is arranged between the linkage ball 309 and the adjusting portion 2, and the puncture needle 3011 is assembled inside the linkage seat 304.

[0022] Specifically, the adjusting portion 2 drives the internal puncture portion 3 and the extraction portion 4 to rotate horizontally, thereby changing the horizontal puncture angle of the puncture portion 3. At the same time, the adjusting portion 2 can also adjust the vertical angle of the puncture portion 3, thereby adjusting the puncture angle of the puncture portion 3. After the puncture angle of the puncture part 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 base 303 and the linkage base 304 to move together, so that the linkage base 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; Then, the pericardial effusion at the puncture needle 3011 is extracted through the extraction part 4 and stored; When the needle needs to be withdrawn urgently, the unlocking lever 308 can be rotated so that the unlocking lever 308 can squeeze the unlocking block 307, thereby causing the unlocking block 307 to squeeze the locking block 305 so that the locking block 305 can retract into the interior of the linkage seat 304, thereby releasing the fixation between the linkage seat 304 and the mounting seat 303. At this time, the elastic extrusion member 3010 releases its internal elastic force to squeeze the linkage ball 309, thereby causing the linkage ball 309 to squeeze the linkage seat 304, so that the linkage seat 304 drives the puncture needle 3011 to be withdrawn from the patient's body in time, realizing the puncture release operation without the need for the control of the puncture motor 301; When the puncture motor 301 moves in the opposite direction, the mounting seat 303 can move upward along the puncture screw 302, so that the mounting seat 303 can squeeze the locking block 305 after contacting the locking block 305 and 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 piece 306 and extends out of the interior of the linkage seat 304 and inserts into the interior of the mounting seat 303, completing the combined locking between the mounting seat 303 and the linkage seat 304.

[0023] See also Figure 1 and Figure 2 As shown, the adjustment part 2 includes a rotating motor 201, a rotating gear 202, a rotating ring 203, an adjustment 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 arranged inside the mounting frame 1, the outer edge of the rotating ring 203 is meshed with the outer edge of the rotating gear 202, one end of the adjustment seat 204 is actively dry-connected to the interior of the rotating ring 203, the lower end of the lifting cylinder 205 is rotatably connected to the interior of the rotating ring 203, and the output end of the lifting cylinder 205 is rotatably connected to the adjustment seat 204; The rotating motor 201 is started, and its output end drives the rotating gear 202 to rotate. The rotating gear 202 engages with the outer edge of the rotating ring 203, driving the rotating ring 203 to rotate horizontally inside the mounting frame 1. The adjusting seat 204 rotates synchronously with the rotating ring 203 to achieve horizontal angle adjustment of the puncture part 3 and the extraction part 4; 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 adjustment seat 204. When the lifting cylinder 205 is extended or retracted, it pushes the adjustment seat 204 to rotate around the connection point with the rotating ring 203, thereby changing the vertical tilt angle of the adjustment seat 204. Ultimately, the posture change of the adjustment seat 204 drives the puncture part 3 and the extraction part 4 to complete the vertical angle adjustment; Horizontal rotation is achieved through the "rotating motor 201 + rotating gear 202", and vertical angle adjustment is achieved through the "extension and contraction of the lifting cylinder 205". The two work together to complete the multi-dimensional positioning of the puncture position.

[0024] See also Figures 9 and 10As shown, the extraction part 4 includes an extraction motor 401, an extraction screw 402, an extraction seat 403, a fixed seat 404, a limiter 405, an elastic reset member 406, a storage tube 407 and an extraction tube 408. The extraction motor 401 is fixedly connected to the inside of the adjustment 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, and two fixed seats 404 are provided, one of which is located at the lower part and is fixedly connected to the extraction seat 403. Another upper fixing seat 404 is fixedly connected to the adjustment seat 204. A limiting member 405 is slidably disposed inside the fixing seat 404. An elastic return member 406 is disposed between the limiting member 405 and the fixing seat 404. The upper end of a storage tube 407 is assembled inside the upper limiting member 405. The storage tube 407 is connected to the puncture needle 3011 via a flexible tube. The upper end of an 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. 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 axial linear motion of the extraction seat 403.

[0025] As the extraction seat 403 moves, the fixing seat 404 at the bottom moves with it. The movement of the fixing seat 404 pulls the extraction tube 408 to slide inside the storage tube 407, creating a negative pressure inside the storage tube 407. The pericardial effusion is then sucked into the storage tube 407 through the puncture needle 3011 and the flexible tube. After the extraction is completed, the storage tube 407 and the extraction tube 408 can be moved out of the fixing seat 404 , and the limiting member 405 can release the fixing of the storage tube 407 and the extraction tube 408 .

[0026] See also 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. When the unlocking lever 308 is rotated, the extrusion 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 lateral extrusion force to the locking block 305 through sliding friction. Under the action of the inclined surface thrust, the locking block 305 contracts toward the inside of the linkage seat 304, compressing the elastic locking pieces 306 on both sides, releasing the engagement between the locking block 305 and the mounting seat 303. After the locking block 305 contracts, the rigid connection between the mounting seat 303 and the linkage seat 304 is released, and the unlocking mechanism is mechanically triggered to ensure a quick response in an emergency.

[0027] See also Figure 8 As shown, the lower end of the locking block 305 is provided with an extrusion slope, which cooperates with the upper end of the mounting seat 303; 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 are in a naturally extended state, pushing the locking block 305 to protrude outwards; When the mounting seat 303 moves toward the linkage seat 304, the upper end of the mounting seat 303 first contacts the inclined surface of the lower end of the locking block 305. The corresponding structure on the upper end of the mounting seat 303 generates a reaction force on the extruded 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 seat 304. As the mounting seat 303 continues to move upward, when the upper end of the mounting seat 303 passes the locking block 305, the extrusion inclined surface is no longer subjected to force, the elastic locking piece 306 releases the elastic force, pushing the locking block 305 to pop out outward, and the lower end of the locking block 305 is stuck in the preset locking groove or limit structure of the mounting seat 303, realizing the rigid fixation of the linkage seat 304 and the mounting seat 303. Through the cooperation between the extrusion inclined surface at the lower end of the locking block 305 and the upper end of the mounting seat 303, the axial movement is converted into radial contraction and reset of the locking block 305.

[0028] See also Figure 7 and Figure 8 As shown, the outer edge of the unlocking lever 308 is provided with a squeezing ridge, which cooperates with the other end of the unlocking block 307, and the protruding distance of the squeezing ridge is the same as the distance that the unlocking block 307 slides to squeeze the locking block 305 to unlock; When unlocking is required, the operator rotates the unlocking rod 308, and the extrusion ridge on the outer edge rotates synchronously with the unlocking rod 308. The protruding structure of the extrusion ridge gradually contacts the other end plane of the unlocking block 307 and begins to apply axial thrust. The protruding distance of the extrusion ridge is mechanically matched with the distance that the unlocking block 307 needs to slide. As the unlocking lever 308 rotates, the extrusion ridge continuously pushes the unlocking block 307 to slide horizontally. The inclined surface at one end of the unlocking block 307 simultaneously squeezes the locking block 305, pushing the locking block 305 to retract and compress the elastic locking member 306 inside the linkage seat 304. When the extrusion ridge rotates to the 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 push the linkage seat 304, driving the puncture needle 3011 to quickly withdraw, completing the unlocking action; The mechanical design of the extrusion ridge realizes the conversion of "rotary motion-linear thrust-precise sliding", and the matching of the protruding distance and the sliding distance of the unlocking block 307 ensures the quantitative control of the unlocking process, avoids over-unlocking or incomplete unlocking, and improves the reliability of emergency operation.

[0029] Please refer to Figures 3 to 6 As shown, the lower end of the puncture needle 3011 is slidingly provided with a guide block, and the two sides of the upper end of the puncture needle 3011 and the two sides of the guide block are provided with limiting columns, which are matched with the mounting grooves in the inside of the linkage seat 304; The lower end of the puncture needle 3011 is nested with the guide block through a sliding pair to form a "needle body-guide block" linkage structure, and double limiting columns are configured: the upper end of the puncture needle 3011 is provided with upper limiting columns, and the two sides of the guide block are provided with lower limiting columns, and the two groups of limiting columns are respectively embedded in the mounting grooves in the inside of the linkage seat 304 to form "upper and lower two points" rigid constraint; The mounting grooves rigidly limit the sliding track of the limiting columns to ensure that the puncture needle 3011 can only move linearly along the direction of the mounting grooves, and horizontal deviation or rotation is avoided. As the puncture needle 3011 moves downward, the guide block slides along the needle body, and the lower limiting column slides in the mounting groove. The bending moment of the puncture needle 3011 is offset by the radial support of the guide block to avoid shaking of the slender needle body. Through the mechanical constraint of "upper and lower limiting columns + mounting grooves" and the dynamic support of the guide block, a two-stage guide system of the puncture needle 3011 is constructed, which not only ensures the linear motion accuracy, but also improves the structural stability by dispersing the stress, solving the problem of easy deviation and shaking of the traditional puncture needle 3011.

[0030] Please refer to Figure 4 and Figure 5 As shown, the inside of the adjustment seat 204 is provided with a U-shaped guide groove, one end of the guide groove is provided with a linkage ball 309, and the other end of the guide groove is provided with an elastic extrusion piece 3010; The U-shaped guide groove is directly arranged in the inside of the adjustment seat 204, and the linkage ball 309 and the elastic extrusion piece 3010 are arranged at both ends of the groove body axis to form a "all-integrated components in the groove" structure, avoiding the space occupied by external additional components. The elastic extrusion piece 3010 is compressed at the end of the guide groove, and the elastic force directly acts on the linkage ball 309 without the need for an additional transmission mechanism, realizing space zero waste of "force-motion" conversion, Through the design of "groove integration + motion path curve + component function complex", the guide, drive and reset functions are compressed into the limited space inside the adjustment seat 204, solving the problem of "volume redundancy caused by multiple components arranged in the traditional device".

[0031] Please refer to Figure 9 and Figure 10As shown, the upper end of the storage tube 407 and the lower end of the extraction tube 408 are both provided with limit rods, which cooperate with the inner part of the limit member 405; A limiting boss is provided at the end of the limiting rod, 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 to prevent accidental sliding in the non-operating state.

[0032] See also Figure 9 and Figure 10 As shown, the interior of the limiting member 405 is provided with a locking groove, the opening of the interior of the locking groove is provided with an inclined surface, and the interior of the locking groove cooperates with the outer edge of the limiting rod; When the storage tube 407 and the extraction tube 408 are moved out of the limiting member 405, the limiting rod can press the inclined surface of the opening of the limiting member 405, so that the limiting member 405 can be retracted into the interior of the fixing seat 404, thereby releasing the limiting member 405 from locking the limiting rod. At the same time, when the storage tube 407 and the extraction tube 408 move into the interior of the limiter 405, the limiter rod can also squeeze the inclined surface at the opening of the limiter 405, so that the limiter 405 shrinks into the interior of the fixed seat 404 until the limiter rod completely enters the interior of the limiter 405, thereby realizing the automatic removal and convenient installation of the storage tube 407 and the extraction tube 408.

[0033] The working principle of the present invention is as follows: the adjustment part 2 drives the internal puncture part 3 and the 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 adjust the vertical angle of the puncture part 3, thereby adjusting the puncture angle of the puncture part 3. After the puncture angle of the puncture part 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 base 303 and the linkage base 304 to move together, so that the linkage base 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; Then, the pericardial effusion at the puncture needle 3011 is extracted through the extraction part 4 and stored; When the needle needs to be withdrawn urgently, the unlocking lever 308 can be rotated so that the unlocking lever 308 can squeeze the unlocking block 307, thereby causing the unlocking block 307 to squeeze the locking block 305 so that the locking block 305 can retract into the interior of the linkage seat 304, thereby releasing the fixation between the linkage seat 304 and the mounting seat 303. At this time, the elastic extrusion member 3010 releases its internal elastic force to squeeze the linkage ball 309, thereby causing the linkage ball 309 to squeeze the linkage seat 304, so that the linkage seat 304 drives the puncture needle 3011 to be withdrawn from the patient's body in time, realizing the puncture release operation without the need for the control of the puncture motor 301; When the puncture motor 301 moves in the opposite direction, the mounting seat 303 can move upward along the puncture screw 302, so that the mounting seat 303 can squeeze the locking block 305 after contacting the locking block 305 and 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 piece 306 and extends out of the interior of the linkage seat 304 and inserts into the interior of the mounting seat 303, completing the combined locking between the mounting seat 303 and the linkage seat 304.

[0034] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A pericardiocentesis device for cardiology, characterized by: The device comprises a mounting frame, an adjusting portion is provided inside the mounting frame, a puncture portion is provided inside the adjusting portion, and an extraction portion is also provided inside the adjusting portion. The adjusting portion can drive the puncture portion and the extraction portion inside to rotate horizontally and adjust the angle in the vertical direction. The puncture portion extends to puncture the target position, and the extraction portion extracts the target liquid after the puncture portion punctures the target position. The puncture part includes a puncture motor, which is fixedly connected to the interior of the adjusting part, and the output end of the puncture motor is fixedly connected to the puncture screw, the outer edge of the puncture screw is threadedly connected to the mounting seat, and the outside of the mounting seat is equipped with a linkage seat, and a locking block is provided inside the linkage seat, and the locking block cooperates with the interior of the mounting seat, an elastic locking piece is provided between the locking blocks, and the locking block is slidably connected to an unlocking block, and the other end of the unlocking block is provided with an unlocking rod, which is rotatably arranged inside the adjusting part, and a plurality of linkage balls are provided at the lower end of the linkage seat, and the linkage ball is arranged inside the adjusting part, and an elastic extrusion piece is provided between the linkage ball and the adjusting part, and the puncture needle is equipped inside the linkage seat.

2. A pericardiocentesis and fluid extraction device for cardiology according to claim 1, characterized in that: The adjusting part 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 arranged inside 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 actively and dryly connected to the inside of the rotating ring, the lower end of the lifting cylinder is rotatably connected to the inside of the rotating ring, and the output end of the lifting cylinder is rotatably connected to the adjusting seat.

3. The pericardiocentesis and fluid extraction device for cardiology according to claim 1, characterized in that: The extraction part includes an extraction motor, an extraction screw, an extraction seat, a fixing seat, a limiter, an elastic reset member, a storage tube and an extraction tube. The extraction motor is fixedly connected to the interior of the adjustment seat, the extraction screw is fixedly connected to the output end of the extraction motor, and the extraction seat is threadedly connected to the outer edge of the extraction screw. Two fixing seats are provided, one of which is fixedly connected to the extraction seat, and the other is fixedly connected to the adjustment seat. The limiter is slidably arranged inside the fixing seat, and the elastic reset member is arranged between the limiter and the fixing seat. The upper end of the storage tube is assembled inside the limiter at the upper part, and the storage tube is connected to the puncture needle through a hose. The upper end of the extraction tube is slidably arranged inside the storage tube, and the lower end of the extraction tube can be assembled inside the limiter at the lower part.

4. A pericardiocentesis and fluid extraction device for cardiology according to claim 1, characterized in that: The interior of one end of the unlocking block is arranged as an inclined surface, and the inclined surface is slidably connected to the upper and lower ends of the locking block.

5. The pericardiocentesis and fluid extraction device for cardiology according to claim 1, characterized in that: The lower end of the locking block is provided with an extrusion inclined surface, and the inclined surface is matched with the upper end of the mounting seat.

6. The pericardiocentesis and fluid extraction device for cardiology according to claim 1, characterized in that: The outer edge of the unlocking rod is protrudingly provided with an extrusion ridge, which cooperates with the other end of the unlocking block, and the protruding distance of the extrusion ridge is the same as the distance that the unlocking block slides to squeeze the locking block to unlock.

7. The pericardiocentesis and fluid extraction device for cardiology according to claim 1, characterized in that: A guide block is slidably provided at the lower end of the puncture needle, and limiting columns are provided on both sides of the upper end of the puncture needle and the guide block. The limiting columns cooperate with the mounting groove inside the linkage seat, and the overall mounting groove is set vertically.

8. The pericardiocentesis and fluid extraction device for cardiology according to claim 2, characterized in that: A U-shaped guide groove is provided inside the adjustment seat, a linkage ball is provided inside one end of the guide groove, and an elastic extrusion piece is provided inside the other end of the guide groove.

9. The pericardiocentesis and fluid extraction device for cardiology according to claim 3, characterized in that: The upper end of the storage tube and the lower end of the extraction tube are both provided with limiting rods, and the limiting rods are matched with the inner part of the limiting member.

10. The pericardiocentesis and fluid extraction device for cardiology according to claim 3, characterized in that: A locking groove is provided inside the limiting member, an opening inside the locking groove is provided with an inclined surface, and the inside of the locking groove matches the outer edge of the limiting rod.

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