Cardiovascular intervention puncture outfit
By combining a detachable puncture needle with a trigger-like locking transmission device and an adjustable arm clamping device, the problems of vascular injury, lack of intuitive operation, and poor equipment stability in cardiovascular puncture are solved, achieving safe, accurate, and comfortable puncture operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- QUZHOU CITY PEOPLE HOSPITAL
- Filing Date
- 2026-04-14
- Publication Date
- 2026-05-19
AI Technical Summary
Existing cardiovascular puncture techniques suffer from problems such as vascular injury risk, lack of intuitive operation, poor equipment stability, and unreasonable clamping structures, which affect the safety and accuracy of puncture.
It employs a detachable puncture needle in conjunction with a trigger-like locking transmission device, combined with an adjustable arm clamping device, and features a three-beveled needle tip structure and hydraulic propulsion tube imaging tube linkage to achieve blunt opening of blood vessels, intuitive feedback, and automatic clamping force adjustment, ensuring the safety and stability of puncture.
It significantly reduces the risk of vascular injury, improves the accuracy and visibility of puncture, ensures the stability of the procedure and patient comfort, and reduces the risk of mechanical injury.
Smart Images
Figure CN122056669A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of medical puncture equipment technology, specifically referring to a cardiovascular interventional puncture device. Background Technology
[0002] Cardiovascular interventional puncture is a fundamental procedure in interventional treatments such as coronary angiography, stent implantation, and thrombus aspiration. Its core lies in the precise placement of the puncture needle into the blood vessel lumen, establishing a pathway for subsequent guidewire and catheter delivery. With the rising incidence of cardiovascular diseases and the increasing demand for minimally invasive treatments, clinicians are placing higher demands on the safety, stability, and visualization of puncture procedures.
[0003] However, existing cardiovascular puncture techniques still have the following shortcomings in practical applications: First, traditional puncture needles are mostly designed with sharp, oblique cuts, which can easily cause cutting damage to the smooth muscle of blood vessels when puncturing them. If the puncture depth is not properly controlled, the needle tip may also puncture the posterior wall of the blood vessel, increasing the risk of complications such as hematoma and pseudoaneurysm. At the same time, the success of the puncture largely depends on the operator's feel or observation of blood return, making it difficult to achieve intuitive feedback at the moment of puncture. Especially for patients with poor vascular conditions, the failure rate and the risk of blind operation are high. Second, during the puncture process, operator hand tremors or slight patient movements may affect needle tip positioning, and existing equipment lacks an effective fixation and stabilization mechanism, making it difficult to achieve relative fixation between the puncture needle and the arm during the puncture process, affecting puncture accuracy. Third, although some puncture auxiliary devices have clamping structures, they mostly use rigid clamping, which cannot adaptively adjust the clamping force according to the arm shape, easily causing excessive compression of local tissues or even mechanical damage. Moreover, the clamping structure is inconvenient to release after the puncture, affecting operational efficiency and patient comfort. Summary of the Invention
[0004] In order to overcome the shortcomings of existing technologies, such as easy vascular damage caused by puncture needles, lack of intuitive operation feedback, poor equipment stability, and unreasonable clamping structure, this invention provides a cardiovascular interventional puncture device that effectively solves the problems of low safety, insufficient visualization, poor operation stability, and easy damage caused by clamping structure during puncture.
[0005] The technical solution adopted by the present invention is as follows: The present invention provides a cardiovascular interventional puncture device, including a detachable puncture needle, a trigger-type engagement transmission device, and an adjustable arm clamping device. The adjustable arm clamping device is in contact with and connected to the arm. The trigger-type engagement transmission device and the adjustable arm clamping device are fixedly connected by a bracket. The adjustable arm clamping device adapts to deformation as the trigger-type engagement transmission device operates. The detachable puncture needle is threadedly engaged with the trigger-type engagement transmission device.
[0006] Furthermore, the detachable puncture needle includes a needle tip, a rubber connecting end, a display tube, a hydraulic propulsion tube, a one-way flow guide tube, a shielding blade, and a blade retraction groove. The rubber connecting end is threadedly connected to a trigger-type engagement transmission device. The needle tip is fixedly positioned on the center line of the rubber connecting end, and a blood flow channel is provided at the center of the needle tip. The hydraulic propulsion tube is fixedly connected to the needle tip, and there is an angle of less than 90° between the hydraulic propulsion tube and the needle tip, which facilitates the drainage of blood into the hydraulic propulsion tube. The display tube is fixedly connected to the hydraulic propulsion tube, and the one-way flow guide tube is fixedly positioned on the inner wall of the display tube. The blade retraction groove is located on the rubber connecting end and near one end of the trigger-type engagement transmission device. The shielding blade is located on the side wall of the blade retraction groove. After the needle tip is inserted into the blood vessel, the shielding blade can prevent blood from entering the trigger-type engagement transmission device, and the blood enters the hydraulic propulsion tube, thus displaying the liquid level in the display tube.
[0007] Furthermore, the diameter of the hydraulic propulsion tube is larger than that of the picture tube. Two sets of unidirectional flow guide tubes are provided, with each set positioned at one end of the picture tube. The tip of the needle is designed with a tri-beveled design. This tri-beveled design ensures that when the needle tip penetrates, it bluntly expands the tissue fibers rather than sharply cuts them, significantly reducing damage to the smooth muscle of the blood vessels. Simultaneously, this structure can be designed with a sharp central edge and rounded edges: when piercing the tissue, the central edge is used; after entering the blood vessel lumen, the rounded outer edge protects the posterior wall of the blood vessel. Even if the doctor does not control the depth properly, the rounded part will only push the posterior wall away rather than pierce it. The picture tube has open, non-sealed structures at both ends. The blade retracting groove is a frustum structure. The shielding blade is set on the edge of the bottom wall of the frustum. If the shielding blade is made of rubber (which is easily deformed), it can be fixedly set on the blade retracting groove. If the shielding blade is made of a rigid material (which is not easily deformed), it is hinged to the blade retracting groove. The hydraulic propulsion tube is equipped with a piston, and the unidirectional guide tube is equipped with a small ball and a spring to limit the blood flow direction, stabilize the internal and external air pressure, and ensure that when blood enters the hydraulic propulsion tube, the liquid level in the picture tube will change with the position of the piston in the hydraulic propulsion tube.
[0008] Furthermore, the simulated trigger-type engaging transmission device includes a gun barrel, a trigger part, a gun handle, a threaded screw, a threadless straight rod, a nut, an engaging connector, and a threaded sleeve. The gun barrel is fixedly connected to an adjustable arm clamping device. The trigger part is fixedly mounted on the outer wall of the gun barrel. The gun handle is fixedly mounted on the outer wall of the gun barrel. The trigger part is connected to the gun handle. The threaded screw is engaged and rotatably mounted on the inner wall of the gun barrel. The threadless straight rod is fixedly connected to the threaded screw and is engaged and rotatably mounted on the inner wall of the gun barrel. The nut slides along the threaded screw. The engaging connector is fixedly mounted on the nut. The threaded sleeve is engaged and rotatably mounted on the engaging connector.
[0009] Furthermore, the inner wall of the threaded sleeve is provided with threads, and the centerline of the snap-fit connector and the threaded sleeve is provided with a sliding groove to facilitate the movement of the guide wire. The connection part between the threaded sleeve and the rubber connection end is designed as a cylindrical structure. The cylindrical inner wall of the threaded sleeve can restrict the deflection direction of the blade. The area of the bottom wall of the blade gathering groove is smaller than the cross-sectional area of the sliding groove at the centerline of the threaded sleeve.
[0010] Furthermore, the adjustable arm clamping device includes a clamping adjustment structure, a clamping automatic adaptation structure, and a rotation direction adjustment clamping plate. The clamping adjustment structure is fixedly connected to the gun barrel, the clamping automatic adaptation structure is engaged and rotatably connected to the clamping adjustment structure, and the rotation direction adjustment clamping plate is rotatably connected to the clamping automatic adaptation structure. The rotation directions of the clamping automatic adaptation structure and the rotation direction adjustment clamping plate are perpendicular to each other. The clamping adjustment structure includes a bevel gear set, a short lead screw, a limiting frame, a short nut, bracket A, bracket B, bracket C, and a clamping connector. The limiting frame is fixedly installed on the outer wall of the gun barrel. The bevel gear set consists of two bevel gears, one bevel gear is fixedly installed on a straight rod without grooves, and the other bevel gear is engaged and rotatably installed on the top wall of the limiting frame. The short lead screw... The short lead screw is fixedly connected to the bevel gear set and is rotatably mounted on the bottom wall of the limiting frame. The short nut slides along the short lead screw. The bracket A is hinged to the side wall of the short nut. The bracket B is hinged to the bracket A. The inflection point of the bracket B is rotatably mounted on the limiting frame. The bracket C is rotatably mounted on the outer wall of the limiting frame. The apex of the clamping joint is hinged to the bracket B. The side wall of the middle point of the clamping joint is rotatably connected to the bracket C. When the bevel gear set rotates, the short lead screw rotates, the short nut is vertically downward, the bracket A is downward, and one end of the bracket B is pressed down by the bracket A. The bracket B tilts and rotates around the inflection point. The bracket C clamps one end of the clamping joint. When the bracket B rotates, the clamping joint is pulled and tilted by the bracket B, causing the clamping joint to clamp the arm.
[0011] Furthermore, the automatic clamping adaptation structure includes a rotating hidden slot, a ratchet limiting ring, a limiting ratchet, a limiting slider, an adjusting rod, and an adaptive clamping block. The rotating hidden slot is disposed within the clamping joint, the ratchet limiting ring is fixedly disposed on the inner wall of the rotating hidden slot, and the adjusting rod slides along the swing direction of the clamping joint on the side wall of the clamping joint. The adjusting rod and the ratchet limiting ring are concentrically arranged, and the limiting ratchet is concentrically fixedly connected to the adjusting rod. After the rotation direction adjusting clamp is pressed against the arm, further swing of the clamping joint can drive the adjusting rod to slide relative to the clamping joint, causing the limiting ratchet to engage with the ratchet limiting ring. The positioning ring generates a skip-tooth engagement, and the limiting slider engages and slides on the side wall of the limiting ratchet. The limiting ratchet and the limiting slider are connected by a spring. The adaptive clamping block and the adjusting rod are fixedly connected by a connecting plate. The ratchet limiting ring, the limiting ratchet, and the limiting slider cooperate with each other to limit the rotation direction of the adaptive clamping block. When the rotation direction adjusting clamp is pressed against the arm, the continued movement of the clamping joint causes the adjusting rod to slide relative to the clamping joint. Through the skip-tooth engagement of the limiting ratchet and the ratchet limiting ring, the excess drive stroke is consumed by the internal relative movement, avoiding the continuous increase of clamping force, thereby realizing the automatic adaptive adjustment of clamping force.
[0012] Furthermore, the inner wall of the ratchet limiting ring is provided with a right-angled triangular protrusion, and the contact surface between the limiting slider and the ratchet limiting ring is set as an inclined surface, which helps the limiting slider to slide and hide towards the center of the limiting ratchet when the limiting ratchet rotates. The adjusting rod is provided with a spring, and the spring is provided with a retaining ring. The retaining ring is engaged and rotated on the outer wall of the clamping joint.
[0013] Furthermore, the rotation direction adjusting clamp is hinged to the adaptive clamping block, and the adaptive clamping block is interference-fitted with the rotation direction adjusting clamp.
[0014] Furthermore, the handle integrates a control circuit and a power supply. The textureless straight rod is driven by a motor, and the power supply is electrically connected to the motor. When the trigger is pulled, the motor is energized, the textureless straight rod rotates, and the needle is pushed forward. Both the nut and the short nut are equipped with limit brackets to maintain the sliding direction of the nut and the short nut.
[0015] Furthermore, the shielding blades are provided in multiple sets, which can completely shield the bottom wall of the blade gathering groove, and the areas of some shielding blades overlap and are pressed together to achieve a sealed shielding of the blade gathering groove and prevent blood from flowing into the threaded sleeve.
[0016] Furthermore, a clearly colored display reagent is placed inside the cathode ray tube for easy observation.
[0017] Furthermore, the rotation direction adjusting clamp is configured as a plate-like structure with multiple bends, and the arm provides an upward supporting force for the rotation direction adjusting clamp using these bends.
[0018] The cardiovascular interventional puncture device provided in this solution has the following beneficial effects: (1) This application uses a detachable puncture needle in conjunction with a trigger-type locking transmission device. The three-beveled needle tip structure at the front end of the needle bluntly opens the tissue fibers during puncture, reducing the cutting damage to the smooth muscle of blood vessels and improving the safety of puncture. At the same time, the linkage design of the imaging tube and the hydraulic propulsion tube uses blood pressure to push the piston, so that the change of liquid level in the imaging tube can be intuitively displayed to show the success of puncture, avoiding blind operation and blood leakage, and improving the accuracy of puncture and the degree of visualization of operation. (2) This application achieves stable needle advance by using the threaded screw and the threadless straight rod in the trigger-type locking transmission device. Combined with the bevel gear group, short screw and support group in the adjustable arm clamping device, the clamping force is automatically adjusted during the puncture process to ensure the relative fixation of the device and the arm, avoid puncture deviation caused by hand tremors or slight movements of the patient, and significantly improve the stability of operation and puncture accuracy. (3) The present application provides an automatic clamping adaptation structure in the clamping joint, including components such as ratchet limiting ring, limiting ratchet and limiting slider. After the clamping arm is clamped by the clamping plate in the rotation direction adjustment, it can automatically limit the further increase of clamping force to prevent excessive pressure from causing mechanical damage. At the same time, after the operation is completed, the clamping plate can be easily released by pulling the adjustment rod, which not only ensures the stability during the puncture process, but also takes into account the patient's comfort and ease of operation. Attached Figure Description
[0019] Figure 1 A front perspective perspective view of a cardiovascular interventional puncture device provided by the present invention; Figure 2 A rear-view perspective view of a cardiovascular interventional puncture device provided by the present invention; Figure 3 An exploded view of a cardiovascular interventional puncture device provided by the present invention; Figure 4 A three-dimensional sectional view of a cardiovascular interventional puncture device provided by the present invention; Figure 5 A schematic diagram of the automatic clamping adaptation structure within the adjustable arm clamping device; Figure 6 A 3D view of a detachable puncture needle; Figure 7 A perspective view of the adjustable arm clamping device; Figure 8 for Figure 4 A magnified view of part A in the middle; Figure 9 for Figure 5 A magnified view of part B in the middle section; Figure 10 for Figure 5 A magnified view of part C in the middle.
[0020] The components include: 1. Detachable puncture needle; 2. Trigger-style locking transmission device; 3. Adjustable arm clamping device; 4. Needle tip; 5. Rubber connecting end; 6. Picture tube; 7. Hydraulic propulsion tube; 8. One-way guide tube; 9. Blocking blade; 10. Blade retraction groove; 11. Gun barrel; 12. Trigger part; 13. Gun handle; 14. Threaded screw; 15. Unthreaded straight rod; 16. Nut; 17. Locking connector; 18. Threaded sleeve; 19. 20. Clamping adjustment structure; 21. Automatic clamping adaptation structure; 22. Rotation direction adjustment clamping plate; 23. Bevel gear set; 24. Short lead screw; 25. Limiting frame; 26. Short nut; 27. Bracket A; 28. Bracket B; 29. Bracket C; 30. Clamping connector; 31. Rotation hidden slot; 32. Ratchet limit ring; 33. Limiting ratchet; 34. Limiting slider; 35. Adjusting rod; 36. Adaptive clamping block; 37. Snap ring.
[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0024] like Figures 1-10As shown, the present invention provides a cardiovascular interventional puncture device, including a detachable puncture needle 1, a trigger-type engagement transmission device 2, and an adjustable arm clamping device 3. The adjustable arm clamping device 3 is in contact with and connected to the arm. The trigger-type engagement transmission device 2 and the adjustable arm clamping device 3 are fixedly connected by a bracket. The adjustable arm clamping device 3 adapts to deformation as the trigger-type engagement transmission device 2 operates. The detachable puncture needle 1 is threadedly engaged with the trigger-type engagement transmission device 2.
[0025] The adjustable arm clamping device 3 includes a clamping adjustment structure 19, a clamping automatic adaptation structure 20, and a rotation direction adjustment clamping plate 21. The clamping adjustment structure 19 is connected to the trigger-type engagement transmission device 2. The clamping automatic adaptation structure 20 is engaged and rotatably connected to the clamping adjustment structure 19. The rotation direction adjustment clamping plate 21 is rotatably connected to the clamping automatic adaptation structure 20. The clamping adjustment structure 19 includes a bevel gear set 22, a short lead screw 23, a limiting frame 24, a short nut 25, a bracket A 26, a bracket B 27, a bracket C 28, and a clamping joint 29. The limiting frame 24 is fixedly installed on the trigger-type engagement transmission device 2. The bevel gear set 22 consists of two bevel gears, one bevel gear and one lead screw. A gear is fixedly installed inside a trigger-type engaging transmission device 2. Another bevel gear is engaged and rotatably installed on the top wall of a limiting frame 24. A short lead screw 23 is fixedly connected to a bevel gear set 22. The short lead screw 23 is engaged and rotatably installed on the bottom wall of the limiting frame 24. A short nut 25 is engaged and slid along the short lead screw 23. A bracket A26 is hinged to the side wall of the short nut 25. A bracket B27 is hinged to a bracket A26. The inflection point of a bracket B27 is engaged and rotatably installed on the limiting frame 24. A bracket C28 is engaged and rotatably installed on the outer wall of the limiting frame 24. The apex of a clamping joint 29 is hinged to a bracket B27. The side wall of the middle point of a clamping joint 29 is engaged and rotatably connected to a bracket C28.
[0026] The automatic clamping adaptation structure 20 includes a rotating hidden slot 30, a ratchet limiting ring 31, a limiting ratchet 32, a limiting slider 33, an adjusting rod 34, and an adaptive clamping block 35. The rotating hidden slot 30 is disposed inside the clamping joint 29. The ratchet limiting ring 31 is fixedly disposed on the inner wall of the rotating hidden slot 30. The adjusting rod 34 engages and slides on the side wall of the clamping joint 29. The adjusting rod 34 and the ratchet limiting ring 31 are concentrically disposed. The limiting ratchet 32 is concentrically fixedly connected to the adjusting rod 34. The limiting slider 33 engages and slides on the side wall of the limiting ratchet 32. The limiting ratchet 32 and the limiting slider 33 are connected by a spring. The adaptive clamping block 35 is fixedly connected to the adjusting rod 34 through a connecting plate.
[0027] The inner wall of the ratchet limiting ring 31 is provided with a right-angled triangular protrusion. The contact surface between the limiting slider 33 and the ratchet limiting ring 31 is set as an inclined surface. The adjusting rod 34 is provided with a spring, and the spring is provided with a retaining ring 36. The retaining ring 36 is engaged and rotated on the outer wall of the clamping joint 29.
[0028] The rotation direction adjusting clamp 21 is hinged to the adaptive clamping block 35, and the adaptive clamping block 35 is interference-fitted with the rotation direction adjusting clamp 21.
[0029] The detachable puncture needle 1 includes a needle tip 4, a rubber connecting end 5, a picture tube 6, a hydraulic propulsion tube 7, a one-way flow guide tube 8, a shielding blade 9, and a blade retraction groove 10. The rubber connecting end 5 is threadedly connected to the trigger-type engagement transmission device 2. The needle tip 4 is fixedly set on the center line of the rubber connecting end 5, and a blood flow channel is provided in the center of the needle tip 4. The hydraulic propulsion tube 7 is fixedly connected to the needle tip 4, and there is an angle of less than 90° between the hydraulic propulsion tube 7 and the needle tip 4. The picture tube 6 is fixedly connected to the hydraulic propulsion tube 7. The one-way flow guide tube 8 is fixedly set on the inner wall of the picture tube 6. The blade retraction groove 10 is set on the rubber connecting end 5 and close to one end of the trigger-type engagement transmission device 2. The shielding blade 9 is set on the side wall of the blade retraction groove 10.
[0030] The diameter of the hydraulic propulsion tube 7 is larger than that of the picture tube 6. There are two sets of unidirectional flow guide tubes 8, and the two sets of unidirectional flow guide tubes 8 are respectively set at both ends of the picture tube 6. The front end of the needle 4 is set as a three-slanted needle tip structure. The blade gathering groove 10 is set as a truncated pyramid structure. The shielding blade 9 is set on the edge of the bottom wall of the truncated pyramid. A piston is installed inside the hydraulic propulsion tube 7, and a small ball and a spring are installed inside the unidirectional flow guide tube 8.
[0031] The trigger-type engagement transmission device 2 includes a gun barrel 11, a trigger part 12, a gun handle 13, a threaded screw 14, a threadless straight rod 15, a nut 16, an engagement joint 17, and a threaded sleeve 18. The gun barrel 11 is fixedly connected to the limiting frame 24. The trigger part 12 is fixedly installed at the connection between the gun barrel 11 and the gun handle 13. The gun handle 13 is fixedly installed on the outer wall of the gun barrel 11. The threaded screw 14 is engaged and rotatably installed on the inner wall of the gun barrel 11. The threadless straight rod 15 is fixedly connected to the threaded screw 14 and is engaged and rotatably installed on the inner wall of the gun barrel 11. The nut 16 engages and slides along the threaded screw 14. The engagement joint 17 is fixedly installed on the nut 16. The threaded sleeve 18 is engaged and rotatably installed on the engagement joint 17.
[0032] The inner wall of the threaded sleeve 18 is provided with threads, and the center line of the snap-fit joint 17 and the threaded sleeve 18 is provided with a sliding groove. The connection part between the threaded sleeve 18 and the rubber connection end 5 is provided with a cylindrical structure. The area of the bottom wall of the blade gathering groove 10 is smaller than the cross-sectional area of the sliding groove at the center line of the threaded sleeve 18.
[0033] The grip 13 integrates a control circuit and a power supply. The straight rod 15 without texture is driven by a motor, and the power supply is electrically connected to the motor. Limit brackets are provided on both the nut 16 and the short nut 25.
[0034] The rotation direction adjustment clamp 21 is a plate-shaped structure with multiple bends.
[0035] In practical use, first connect the rubber connecting end 5 to the threaded sleeve 18, then adjust the angle between the rotation direction adjustment plate 21 and the adaptive clamping block 35, place the rotation direction adjustment plate 21 on both sides of the arm, place the gun barrel 11 along the arm, and align the needle 4 with the blood vessel. Pulling the trigger 12 energizes the motor, causing the threaded screw 14 and the threadless straight rod 15 to rotate. When the threaded screw 14 rotates, the nut 16 drives the locking connector 17 to slide, and the threaded sleeve 18 pushes the needle 4 into the arm. When the needle 4 is inserted into the blood vessel but does not penetrate it, the blood enters the needle 4 and is blocked by the blocking blade 9. The blood flows into the hydraulic propulsion tube 7, causing the piston in the hydraulic propulsion tube 7 to slide. The liquid level in the imaging tube 6 is squeezed and flows by the piston, moving to the high position of the imaging tube 6. The liquid color in the imaging tube 6 is obvious and easy for the operator to detect. The change in the liquid level in the imaging tube 6 indicates that the needle 4 has safely entered the blood vessel. The pressure generated by the puncture of the blood vessel is converted into the kinetic energy of the piston. Finally, the change in the liquid level in the imaging tube 6 confirms that the needle 4 has entered the blood vessel, which makes the puncture more intuitive and avoids blood contamination of the external environment. The straight rod 15 without grooves rotates, the bevel gear set 22 rotates, the short lead screw 23 is driven to rotate by the bevel gear set 22, the short nut 25 slides along the short lead screw 23, the short nut 25 descends, the bracket A26 moves downward, one end of the bracket B27 is driven to descend by the bracket A26, and the other end of the bracket B27 tilts up. Because the clamping joint 29 is engaged with the bracket C28, the bracket B27 drives the clamping joint 29 to move closer to the arm end, and the clamping plate 21 clamps the arm by adjusting the rotation direction. During the process of the arm being clamped by the rotation direction adjustment clamp 21, the needle 4 continues to move forward, and the straight rod 15 without texture continues to rotate. In order to avoid mechanical damage caused by excessive compression of the arm, an automatic clamping adaptation structure 20 is provided in the clamping connector 29. When the rotation direction adjustment clamp 21 is already close to the arm and cannot be pressed down further, the textureless straight rod 15 continues to rotate, driving the clamping joint 29 to swing further downward; at this time, since the rotation direction adjustment clamp 21 is fixed relative to the arm, the adjustment rod 34 and the adaptive clamping block 35 cannot continue to move downward, and the adjustment rod 34 slides upward relative to the clamping joint 29 along its sliding mating surface. During the upward sliding of the adjusting rod 34, the limiting ratchet 32 fixed on it and the ratchet limiting ring 31 fixed in the clamping joint 29 move relative to each other. The inclined surface of the limiting slider 33 fits against the inclined surface of the triangular protrusion in the ratchet limiting ring 31, forcing the limiting slider 33 to slide towards the center of the limiting ratchet 32 and pass over the protrusion of the ratchet limiting ring 31, generating periodic tooth skipping. The continued swing of the clamping joint 29 is converted into relative sliding between the adjusting rod 34 and the clamping joint 29 and the tooth skipping motion of the ratchet mechanism, and is no longer transmitted to the rotation direction adjusting clamp 21. Thus, after the clamping force reaches the preset threshold, it automatically stops further pressing the arm, realizing the adaptive adjustment of the clamping force. To remove the rotation direction adjustment clamp 21 from the arm, pull the adjustment lever 34. The adaptive clamping block 35 and the clamping connector 29 will move relative to each other, and the limiting ratchet 32 and the ratchet limiting ring 31 will be misaligned. Then the rotation direction adjustment clamp 21 can be moved and removed from the arm. Insert the guidewire into the groove at the end of the snap-fit connector 17. The guidewire passes through the threaded sleeve 18, enters the needle 4, and finally enters the blood vessel. During this process, the guidewire pushes the shielding leaf 9 and pushes the shielding leaf 9 to the side wall of the leaf convergence groove 10. Cardiovascular puncture requires leaving the guidewire in the body. Then, manually withdraw the device, and the needle 4 is removed from the body, completing the cardiovascular puncture operation.
[0036] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.
Claims
1. A cardiovascular interventional puncture device, characterized in that: It includes a detachable puncture needle (1), a trigger-type engagement transmission device (2), and an adjustable arm clamping device (3). The adjustable arm clamping device (3) is in contact with the arm. The trigger-type engagement transmission device (2) and the adjustable arm clamping device (3) are fixedly connected by a bracket. The adjustable arm clamping device (3) adapts to the deformation of the trigger-type engagement transmission device (2) as it works. The detachable puncture needle (1) and the trigger-type engagement transmission device (2) are threadedly engaged.
2. The cardiovascular interventional puncture device according to claim 1, characterized in that: The adjustable arm clamping device (3) includes a clamping adjustment structure (19), a clamping automatic adaptation structure (20), and a rotation direction adjustment clamping plate (21). The clamping adjustment structure (19) is connected to the trigger-type engagement transmission device (2). The clamping automatic adaptation structure (20) is engaged and rotatably connected to the clamping adjustment structure (19). The rotation direction adjustment clamping plate (21) is rotatably connected to the clamping automatic adaptation structure (20). The clamping adjustment structure (19) includes a bevel gear set (22), a short lead screw (23), a limiting frame (24), a short nut (25), a bracket A (26), a bracket B (27), a bracket C (28), and a clamping joint (29). The limiting frame (24) is fixedly installed on the trigger-type engagement transmission device (2). The bevel gear set (22) consists of two bevel gears, one bevel gear and one bevel gear. The gear is fixedly installed on the trigger-type engagement transmission device (2), and another bevel gear is engaged and rotated on the top wall of the limiting frame (24). The short lead screw (23) is fixedly connected to the bevel gear set (22). The short lead screw (23) is engaged and rotated on the bottom wall of the limiting frame (24). The short nut (25) is engaged and slid along the short lead screw (23). The bracket A (26) is hinged to the side wall of the short nut (25). The bracket B (27) is hinged to the bracket A (26). The corner point of the bracket B (27) is engaged and rotated on the limiting frame (24). The bracket C (28) is engaged and rotated on the outer wall of the limiting frame (24). The apex of the clamping joint (29) is hinged to the bracket B (27). The side wall of the middle point of the clamping joint (29) is engaged and rotated connected to the bracket C (28).
3. The cardiovascular interventional puncture device according to claim 2, characterized in that: The automatic clamping adaptation structure (20) includes a rotating hidden slot (30), a ratchet limiting ring (31), a limiting ratchet (32), a limiting slider (33), an adjusting rod (34), and an adaptive clamping block (35). The rotating hidden slot (30) is located inside the clamping joint (29). The ratchet limiting ring (31) is fixedly located on the inner wall of the rotating hidden slot (30). The adjusting rod (34) engages and slides on the side wall of the clamping joint (29). The adjusting rod (34) and the ratchet limiting ring (31) are concentrically arranged. The limiting ratchet (32) and the adjusting rod (34) are concentrically fixedly connected. The limiting slider (33) engages and slides on the side wall of the limiting ratchet (32). The limiting ratchet (32) and the limiting slider (33) are connected by a spring. The adaptive clamping block (35) and the adjusting rod (34) are fixedly connected by a connecting plate.
4. The cardiovascular interventional puncture device according to claim 3, characterized in that: The inner wall of the ratchet limiting ring (31) is provided with a right-angled triangular protrusion. The contact surface between the limiting slider (33) and the ratchet limiting ring (31) is set as an inclined surface. The adjusting rod (34) is provided with a spring. The spring is provided with a retaining ring (36). The retaining ring (36) is engaged and rotated on the outer wall of the clamping joint (29).
5. A cardiovascular interventional puncture device according to claim 4, characterized in that: The rotation direction adjusting clamp (21) is hinged to the adaptive clamping block (35), and the adaptive clamping block (35) is interference-fitted with the rotation direction adjusting clamp (21).
6. A cardiovascular interventional puncture device according to claim 5, characterized in that: The detachable puncture needle (1) includes a needle (4), a rubber connecting end (5), a picture tube (6), a hydraulic propulsion tube (7), a one-way flow guide tube (8), a shielding blade (9), and a blade retraction groove (10). The rubber connecting end (5) is threadedly connected to the trigger-type engagement transmission device (2). The needle (4) is fixedly set on the center line of the rubber connecting end (5). The center of the needle (4) is provided with a blood flow channel. The hydraulic propulsion tube (7) is fixedly connected to the needle (4), and there is an angle of less than 90° between the hydraulic propulsion tube (7) and the needle (4). The picture tube (6) is fixedly connected to the hydraulic propulsion tube (7). The one-way flow guide tube (8) is fixedly set on the inner wall of the picture tube (6). The blade retraction groove (10) is set on the rubber connecting end (5) and close to one end of the trigger-type engagement transmission device (2). The shielding blade (9) is set on the side wall of the blade retraction groove (10).
7. A cardiovascular interventional puncture device according to claim 6, characterized in that: The diameter of the hydraulic propulsion tube (7) is larger than that of the picture tube (6). There are two sets of unidirectional flow guide tubes (8), and the two sets of unidirectional flow guide tubes (8) are respectively set at both ends of the picture tube (6). The front end of the needle (4) is set as a three-slanted needle tip structure. The blade gathering groove (10) is set as a frustum structure. The shielding blade (9) is set on the edge of the bottom wall of the frustum. A piston is provided in the hydraulic propulsion tube (7). A small ball and a spring are provided in the unidirectional flow guide tube (8).
8. A cardiovascular interventional puncture device according to claim 7, characterized in that: The simulated trigger-type engagement transmission device (2) includes a gun barrel (11), a trigger part (12), a gun handle (13), a threaded screw (14), a threadless straight rod (15), a nut (16), an engagement connector (17), and a threaded sleeve (18). The gun barrel (11) is fixedly connected to an adjustable arm clamping device (3). The trigger part (12) is fixedly installed on the outer wall of the gun barrel (11), and the gun handle (13) is fixedly installed on the outer wall of the gun barrel (11). (12) Connected to the gun handle (13), the threaded screw (14) is engaged and rotated on the inner wall of the gun barrel (11), the unpatterned straight rod (15) is fixedly connected to the threaded screw (14), the unpatterned straight rod (15) is engaged and rotated on the inner wall of the gun barrel (11), the nut (16) is engaged and slid along the threaded screw (14), the engagement joint (17) is fixedly mounted on the nut (16), and the threaded sleeve (18) is engaged and rotated on the engagement joint (17).
9. A cardiovascular interventional puncture device according to claim 8, characterized in that: The inner wall of the threaded sleeve (18) is provided with threads, and the center line of the snap-fit joint (17) and the threaded sleeve (18) is provided with a sliding groove. The connection part of the threaded sleeve (18) and the rubber connection end (5) is set as a cylindrical structure. The area of the bottom wall of the blade gathering groove (10) is smaller than the cross-sectional area of the sliding groove at the center line of the threaded sleeve (18).
10. A cardiovascular interventional puncture device according to claim 9, characterized in that: The gun handle (13) is equipped with a control circuit and a power supply. The textureless straight rod (15) is driven by a motor. The power supply is electrically connected to the motor. The nut (16) and the short nut (25) are both equipped with limit brackets. The rotation direction adjustment clamp (21) is a plate-shaped structure with multiple bends.