A guiding device for guide wire insertion in cardiovascular interventional surgery

Abstract

The present invention discloses a guide device for inserting a guidewire for cardiovascular interventional surgery, belonging to the technical field of guidewire guidance. The device comprises a guide seat, a guidewire guiding and twisting assembly comprising a slider, a positioning pin elastically and slidably inserted on the slider, a second dial rotatably connected to the slider, and the second dial elastically connected to the first dial; the guidewire is clamped by the first dial and the second dial, both of which are fan-shaped structures and form a circular wheel, and the guidewire is inserted into a catheter sheath along the guide seat through the reciprocating circular wheel; the first dial and the second dial are toggled and placed on the slider, and the circular wheel clamps the guidewire; the positioning pin is squeezed and inserted into the guide seat by the second dial, thereby preventing blood from flowing out of the catheter sheath and contaminating the doctor's hands, the guidewire, and the catheter sheath. The guidewire is inserted into the catheter sheath by the guidewire guiding and twisting assembly through the reciprocating movement of the guidewire stored in the guidewire storage tube, thereby preventing the guidewire from accidentally being pulled out of the catheter sheath and causing blood vessels to be scratched.

Description

Technical Field

[0001] The present invention relates to the technical field of guidewire guidance, and more particularly to a guiding device for inserting a guidewire in cardiovascular interventional surgery. Background Art

[0002] A guidewire is a long, thin, filamentous tool commonly used in interventional procedures. In cardiovascular interventional procedures, it is a critical guidance tool. It can smoothly traverse complex and varied vascular structures, and a catheter sheath guides the guidewire to the target vessel.

[0003] The current guidewire insertion guidance usually adopts the catheter sheath guidance method. This guidance method can guide the guidewire, but it also has the following defects: after the guidewire is inserted into the catheter sheath, the doctor inserts the guidewire into the catheter sheath through the opening side of the catheter sheath, and the catheter sheath is inserted into the blood vessel for guidance. Therefore, during the use of the catheter sheath, blood will flow out through the opening side, causing a large amount of blood to adhere to the doctor's fingers and the operating table. When a large amount of blood adheres to the doctor's hands and the catheter sheath, the doctor will not be able to accurately pinch the guidewire when pushing it into the catheter sheath because the guidewire is relatively thin, and there will be problems of invalid pushing due to slippage during the pushing process.

[0004] When the guidewire is long and is placed randomly, firstly, the risk of the guidewire being contaminated is easily increased, and secondly, the guidewire is easily hung on the medical staff during the operation. Moreover, after the guidewire is hung on the medical staff, the normal progress of the operation will be affected during the removal of the guidewire, increasing the risk of disease for the patient. If the medical staff does not notice that there is a guidewire hanging on their body, the guidewire may be pulled out of the catheter sheath and the blood vessel while walking, which will cause the spring on the outside of the guidewire to move relative to the inner wall of the blood vessel, and the friction may easily cause vascular spasm. At the same time, the head of the guidewire can easily scratch the blood vessel at the corner, so once punctured, more serious consequences will occur.

[0005] In view of this, we propose a guiding device for guidewire insertion in cardiovascular interventional surgery. Summary of the Invention

[0006] 1. Technical problems to be solved

[0007] The purpose of the present invention is to provide a guiding device for inserting a guide wire in cardiovascular interventional surgery, which solves the technical problems in the above-mentioned background technology and achieves the technical effect of avoiding the contamination of the doctor's hands, guide wire and catheter sheath caused by blood flowing out of the catheter sheath. The guide wire is inserted into the catheter sheath by reciprocating the guide wire stored in the guide wire storage tube through the guide wire guiding and rubbing component, thereby preventing the guide wire from being accidentally pulled out of the catheter sheath and causing the problem of scratching the blood vessel.

[0008] 2. Technical solution

[0009] The technical solution of the present invention provides a guide device for inserting a guide wire in cardiovascular intervention surgery, comprising a guide seat, one end of which is connected to a catheter sheath, and the other end of which is connected to a guide wire storage tube, and a guide wire guiding and twisting assembly is slidably provided on the guide seat;

[0010] The guide wire guiding and twisting assembly includes a slider, a positioning pin is elastically inserted into the slider, a second dial wheel is rotatably connected to the slider, and the second dial wheel is elastically connected to the first dial wheel;

[0011] The guide wire is clamped by the first and second dial wheels. The first and second dial wheels are both fan-shaped structures and form a circular wheel. The guide wire is inserted into the catheter sheath along the guide seat through the reciprocating circular wheel.

[0012] The first and second dial wheels are moved and placed on the slider, and the round wheel clamps the guide wire; the positioning pin is squeezed and inserted into the guide seat through the second dial wheel for positioning.

[0013] As an optional solution of the technical solution of the present invention, the slider is provided with a rotation groove, the first and second dial wheels are coaxially connected to the rotation groove, the slider is provided with a stepped hole along the radial direction of the rotation groove, the positioning pin is slidably inserted into the stepped hole, and a third spring is sleeved on the positioning pin;

[0014] The guide seat includes a guide rail, the slider is slidably arranged on the guide rail, and the guide rail is provided with a plurality of positioning holes adapted and corresponding to the positioning pins;

[0015] An annular groove is formed on the outer wall of the second thumbwheel, and a slope block is fixed at one end of the annular groove.

[0016] As an optional solution of the technical solution of the present invention, the inner wall of the rotating groove is symmetrically provided with arc grooves, the arc grooves are coaxial with the rotating groove, the first arc rails are coaxially fixed on both axial sides of the first thumbwheel, and the second arc rails are coaxially fixed on both axial sides of the second thumbwheel, the first arc rail and the second arc rail form a circular rail, and the circular rail rotates along the arc groove.

[0017] As an optional solution of the technical solution of the present invention, a guide rod is symmetrically fixed on the side of the first dial away from the arc surface, and a guide hole adapted for the guide rod is provided on the side of the second dial close to the first dial. The second dial also has a spring groove arranged in the same direction as the guide rod, and a second spring is fixed between the spring groove and the first dial.

[0018] As an optional solution to the technical solution of the present invention, a connector is fixed at one end of the guide rail, and a blood guide shell is fixed at the other end. The connector is provided with a through-hole connected to the guide wire storage tube. The end of the blood guide shell close to the connector is connected to the guide tube. The through-hole, guide tube, guide wire storage tube, and circular wheel are coaxially arranged, and one side of the blood guide shell is connected to the blood derivation tube.

[0019] As an optional solution of the technical solution of the present invention, the guidewire storage tube is spirally coiled on the coiling seat, and the coiling seat includes a plurality of annularly distributed support rods, and a plurality of bayonet holes are opened on the support rods, and the bayonet holes are adapted to the guidewire storage tube.

[0020] As an optional solution of the technical solution of the present invention, a first spring is fixed between the blood guiding shell and the slider.

[0021] As an optional solution of the technical solution of the present invention, the blood guide shell and the catheter sheath are connected through a connecting tube with a frustum-shaped structure.

[0022] As an optional solution of the technical solution of the present invention, rubber pads are fixedly installed on opposite sides of the first thumbwheel and the second thumbwheel, and the guide wire is clamped between the two rubber pads.

[0023] 3. Beneficial effects

[0024] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0025] 1. The present invention avoids the guide wire from being hung on the clothes of medical staff through the guide wire storage tube, avoids the contamination caused by the guide wire being exposed to the air for a long time, and the circular wheel formed by the first dial and the second dial clamps the guide wire, and the circular wheel is reciprocated and slides along the guide seat toward the catheter sheath through the slider, so that the guide wire can be inserted into the blood vessel more smoothly through the catheter sheath and can break through the thrombus position more smoothly. After the first dial and the second dial are moved and partially placed on the slider, the positioning pin is squeezed and inserted into the guide seat by the second dial, so that the guide wire can be fixed, avoiding the problem of the guide wire being scratched by the back-pulling and causing the blood vessel to be cut.

[0026] 2. The present invention guides the blood into the blood vessel through the catheter sheath, which is connected to the blood guide shell, but the guide tube is not directly connected to the catheter sheath. Therefore, when blood overflows from the catheter sheath, the blood flows out through the blood outlet tube connected to one side of the blood guide shell under the action of gravity; and the cooperation between the blood guide shell and the blood outlet tube can prevent blood from flowing back to the doctor's hands, thereby ensuring the cleanliness of the doctor's hands and the entire guide seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is a schematic diagram of the overall structure of a guide wire insertion device for cardiovascular interventional surgery disclosed in a preferred embodiment of the present invention;

[0028] Figure 2 A guide wire insertion guide device for cardiovascular intervention surgery disclosed in a preferred embodiment of the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0029] Figure 3 This is a structural schematic diagram of a guide seat of a guide device for inserting a guide wire in cardiovascular interventional surgery disclosed in a preferred embodiment of the present invention;

[0030] Figure 4 This is a schematic structural diagram of a first dial wheel and a second dial wheel of a guide wire insertion guide device for cardiovascular interventional surgery disclosed in a preferred embodiment of the present invention forming a circular wheel;

[0031] Figure 5 This is a schematic cross-sectional view of a first dial wheel and a second dial wheel of a guide wire insertion guide device for cardiovascular interventional surgery disclosed in a preferred embodiment of the present invention, forming a circular wheel;

[0032] Figure 6 This is a structural diagram of a guide wire insertion guide device for cardiovascular interventional surgery disclosed in a preferred embodiment of the present invention, showing a first dial wheel limiting position and a positioning pin extending state;

[0033] Figure 7 This is a schematic cross-sectional view of a guide wire insertion guide device for cardiovascular interventional surgery disclosed in a preferred embodiment of the present invention, showing a first dial wheel limiting position and a positioning pin extending outward;

[0034] Figure 8 This is a structural diagram of a guide wire installation state of a guide wire guiding and twisting assembly of a guide wire insertion guide device for cardiovascular intervention surgery disclosed in a preferred embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of the exploded structure of a guide wire guiding and rubbing assembly of a guide wire insertion guide device for cardiovascular intervention surgery disclosed in a preferred embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram of the cross-sectional structure of a slider of a guide wire insertion guide device for cardiovascular intervention surgery disclosed in a preferred embodiment of the present invention;

[0037] Figure 11 This is a schematic structural diagram of a first dial wheel of a guide wire insertion guide device for cardiovascular interventional surgery disclosed in a preferred embodiment of the present invention;

[0038] Figure 12This is a schematic diagram of the structure of a second dial wheel of a guide wire insertion guide device for cardiovascular interventional surgery disclosed in a preferred embodiment of the present invention;

[0039] Figure 13 This is a schematic diagram of the structure of a coiled seat of a guide wire insertion guide device for cardiovascular interventional surgery disclosed in a preferred embodiment of the present invention;

[0040] Explanation of reference numerals in the figure: 10, guide seat; 11, connector; 111, perforation; 12, guide rail; 121, positioning hole; 13, blood guide shell; 131, guide tube; 14, blood outlet tube;

[0041] 20. Catheter sheath; 21. Connecting tube;

[0042] 30. Guide wire guide and rubbing assembly; 31. Slider; 311. Rotating groove; 312. Arc groove; 313. Step hole; 32. First spring; 33. First dial wheel; 331. First arc rail; 332. Guide rod; 34. Second dial wheel; 341. Second arc rail; 342. Guide hole; 343. Spring groove; 344. Second spring; 345. Annular groove; 35. Positioning pin; 351. Third spring; 36. Slope block; 37. Rubber pad;

[0043] 40. Guidewire storage tube;

[0044] 50. Coil seat; 51. Support rod; 52. Bayonet. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below with reference to the accompanying drawings.

[0046] like Figure 1 - Figure 13 As shown, a guide device for inserting a guide wire for cardiovascular interventional surgery includes a guide seat 10. One end of the guide seat 10 is connected to a catheter sheath 20. The guide seat 10 is used to guide the guide wire to the catheter sheath 20. The catheter sheath 20 punctures the blood vessel through the puncture needle. The catheter sheath 20 is a thin-walled tubular sheath that can reduce damage to the blood vessel and provide a stable entry and exit channel for the subsequent guide wire. The other end is connected to a guide wire storage tube 40. The guide wire is inserted into the guide wire storage tube 40 for storage. This can prevent the guide wire from being exposed to the outside and contamination, and can prevent the exposed guide wire from getting caught on clothing.

[0047] At the same time, the guide wire storage tube 40 is a spiral coil structure, so when the guide wire passes into the guide wire storage tube 40, it can avoid the problem of large bending of the guide wire, and can also avoid the problem of large space occupied by the guide wire placed randomly. A guide wire guiding and twisting component 30 is slidably provided on the guide seat 10;

[0048] like Figure 8As shown, the guide wire guiding and twisting assembly 30 includes a slider 31, which is slidably arranged on the guide seat 10 and slides along the inlet of the catheter sheath 20 and the outlet of the guide wire storage tube 40. A positioning pin 35 is elastically inserted into the slider 31. When the first dial 33 is always reciprocated in the area above the slider 31, the positioning pin 35 is always placed in the slider 31 (as shown in FIG. Figure 5 As shown), the slider 31 can slide normally along the guide seat 10, and when the first thumbwheel 33 and the second thumbwheel 34 are partially placed in the slider 31, the second thumbwheel 34 presses the positioning pin 35 downward and inserts it into the guide seat 10, and can clamp the guide wire on the first thumbwheel 33 and the second thumbwheel 34 and fix it (as shown). Figure 7 shown);

[0049] like Figure 8 As shown, the slider 31 is rotatably connected to the second dial wheel 34, and the second dial wheel 34 is elastically connected to the first dial wheel 33. When the first dial wheel 33 is not pressed, a guide wire insertion channel is formed between the first dial wheel 33 and the second dial wheel 34. The guide wire is inserted into the channel to place the guide wire between the first dial wheel 33 and the second dial wheel 34.

[0050] The guide wire is clamped by the first and second dial wheels 33 and 34. The first and second dial wheels 33 and 34 are both fan-shaped structures. When the first and second dial wheels 33 and 34 clamp the guide wire, they form a circular wheel (such as Figure 4 As shown in the figure, the doctor holds the guide seat 10 with one hand, and then uses the thumb to move the wheel back and forth, which drives the guide wire to rotate clockwise or counterclockwise. In the process, the thumb pushes the wheel and the slider 31 holding the guide wire toward the catheter sheath 20. The guide wire is inserted into the catheter sheath 20 along the guide seat 10 through the reciprocating wheel. When the guide wire is reciprocated, a torsion is generated. This torque helps to overcome the resistance of the thrombus to the guide wire, and can also avoid the problem of guide wire bending during the pushing process by twisting.

[0051] like Figure 6 、 Figure 7 As shown, after the round wheel clamps the guide wire, the first and second dial wheels 33, 34 are moved by the thumb and partially placed on the slider 31. At this time, the first and second dial wheels 33, 34 are limited by the slider 31, so that they always maintain the round wheel state, and when the fingers are released, the round wheels are still in the state of clamping the guide wire; at the same time, the positioning pin 35 is squeezed and inserted into the guide seat 10 through the second dial wheel 34 for positioning, and then when the doctor does not push the guide wire, the guide wire can be fixed on the round wheel, and the round wheel is fixed on the guide seat 10. The doctor can prevent the guide wire from slipping out of the catheter sheath 20 by holding the guide seat 10.

[0052] Finally, the guidewire storage tube 40 is used to prevent the guidewire from being hung on the clothes of medical staff, and to avoid contamination caused by the guidewire being exposed to the air for a long time. The circular wheel formed by clamping the guidewire by the first dial 33 and the second dial 34 is moved back and forth and slides along the guide seat 10 toward the catheter sheath 20 through the slider 31, so that the guidewire can be inserted into the blood vessel more smoothly through the catheter sheath 20 and can break through the thrombus position more smoothly. After the first dial 33 and the second dial 34 are moved and partially placed on the slider 31, the positioning pin 35 is squeezed and inserted into the guide seat 10 by the second dial 34, so that the guidewire can be fixed, avoiding the problem of the guidewire being scratched by the back-pulling and causing the blood vessel to be cut.

[0053] like Figure 7 、 Figure 9 、 Figure 10 As shown, the slider 31 is provided with a rotation groove 311, and the circular wheel formed by the first dial 33 and the second dial 34 is coaxial with the rotation groove 311 and rotates in conjunction with each other. The first dial 33 and the second dial 34 are coaxially connected to the rotation groove 311 for rotation. The slider 31 is provided with a step hole 313 along the radial direction of the rotation groove 311, and the positioning pin 35 is slidably inserted into the step hole 313. A third spring 351 is sleeved on the positioning pin 35. The third spring 351 is fixed to the large-diameter end of the step hole 313, and the upper end is fixed to the positioning pin 35. The step hole 313 cooperates with the positioning pin 35 to position the sliding direction of the positioning pin 35.

[0054] like Figure 2 The guide seat 10 includes a guide rail 12, and the slider 31 is slidably arranged on the guide rail 12. A plurality of positioning holes 121 that are adapted to and corresponding to the positioning pins 35 are opened on the guide rail 12. The plurality of positioning holes 121 are arranged along the sliding direction of the slider 31, and the opening edges of the positioning holes 121 are rounded to facilitate the insertion of the positioning pins 35 into the corresponding positioning holes 121. When the positioning pin 35 is pressed and inserted into the positioning hole 121 by the second dial wheel 34, the third spring 351 is elastically compressed to generate a rebound force, thereby fixing the round wheel and the slider 31 on the guide rail 12 through the positioning pin 35;

[0055] like Figure 5 、 Figure 7 、 Figure 12As shown, an annular groove 345 is formed on the outer wall of the second dial wheel 34. The upper end of the positioning pin 35 always contacts the inner wall of the annular groove 345 after the rebound of the third spring 351. A slope block 36 is fixed at one end of the annular groove 345. One side of the slope block 36 is a slope structure, and the slope gradually moves away from the axis of the circular wheel in a clockwise direction. Therefore, when the first dial wheel 33 and the second dial wheel 34 form a circular wheel, when the finger is rotating the circular wheel back and forth for less than 90 degrees, the positioning pin 35 is always in the circular groove. shaped groove 345, the locating pin 35 is received in the stepped hole 313, and when the connecting seam between the first dial 33 and the second dial 34 is rotated counterclockwise by ninety degrees, the first dial 33 and the second dial 34 are partially placed in the rotating groove 311, and at the same time, the slope block 36 presses the locating pin 35 downward through the slope surface, so that the locating pin 35 is inserted into the corresponding locating hole 121 to complete the positioning. When removing, rotate the round wheel clockwise and make the locating pin 35 slide into the arc-shaped groove 312 along the slope surface of the slope block 36.

[0056] like Figure 6 、 Figure 10 、 Figure 11 、 Figure 12 As shown, the inner wall of the rotating groove 311 is symmetrically provided with an arc groove 312, and the arc groove 312 is coaxial with the rotating groove 311. The first arc rail 331 is coaxially fixed on both axial sides of the first thumbwheel 33, and the second arc rail 341 is coaxially fixed on both axial sides of the second thumbwheel 34. When the first thumbwheel 33 and the second thumbwheel 34 are pressed against each other to form a circular wheel, the first arc rail 331 and the second arc rail 341 form a circular rail, and the circular rail rotates along the arc groove 312, thereby realizing the coaxiality of the circular wheel and the rotating groove 311, and the guide wire is clamped by the first thumbwheel 33 and the second thumbwheel 34, and is coaxial with the rotating groove 311 and the circular wheel, and then the circular rail is used to ensure that the guide wire and the circular wheel are twisted coaxially, while preventing the second thumbwheel 34 from falling off the slider 31.

[0057] like Figure 9 、 Figure 11As shown, a guide rod 332 is symmetrically fixed to the side of the first dial 33 away from the arc surface, and a guide hole 342 adapted to the guide rod 332 is provided on the side of the second dial 34 close to the first dial 33. The guide rod 332 is slidably inserted into the guide hole 342. The cooperation between the guide rod 332 and the guide hole 342 guides the first dial 33 to avoid the problem of deflection when the first dial 33 and the second dial 34 form a circular wheel. The second dial 34 also has a spring groove 343 arranged in the same direction as the guide rod 332. A second spring 344 is fixed between 343 and the first dial wheel 33. When the first dial wheel 33 is pressed toward the second dial wheel 34, the second spring 344 elastically contracts in the spring slot 343 and generates an elastic rebound force. When the first dial wheel 33 is no longer pressed by the thumb, the elastic rebound of the second spring 344 facilitates the bounce of the first dial wheel 33, thereby separating the first dial wheel 33 and the second dial wheel 34, and at the same time, the second spring 344 is accommodated by the spring slot 343.

[0058] like Figure 1 、 Figure 2 As shown, a connector 11 is fixed to one end of the guide rail 12, and a blood guide shell 13 is fixed to the other end. The connector 11 is provided with a through hole 111 which is communicated with the guide wire storage tube 40. The through hole 111 is coaxially arranged with the second thumbwheel 34. A guide tube 131 is connected through one end of the blood guide shell 13 near the connector 11. The through hole 111, the guide tube 131, the guide wire storage tube 40, and the circular wheel are coaxially arranged. After the guide wire passes through the through hole 111, it is clamped on the circular wheel formed between the first thumbwheel 33 and the second thumbwheel 34. The guide wire passes through the blood guide shell 13 through the guide tube 131 and is guided into the blood vessel by the catheter sheath 20. The catheter sheath 20 is communicated with the blood guide shell 13, and the guide tube 131 is not directly communicated with the catheter sheath 20. Therefore, when blood overflows from the catheter sheath 20, the blood flows out through the blood outlet tube 14 connected to one side of the blood guide shell 13 under the action of gravity.

[0059] Furthermore, the cooperation between the blood guide shell 13 and the blood outlet tube 14 can prevent blood from flowing back to the doctor's hands, thereby ensuring the cleanliness of the doctor's hands and the entire guide seat 10.

[0060] like Figure 1 、 Figure 13 As shown, the guide wire storage tube 40 is spirally coiled on the coiling seat 50. The coiling seat 50 includes a plurality of annularly distributed support rods 51. The support rods 51 are provided with a plurality of bayonet holes 52. The bayonet holes 52 are adapted to the guide wire storage tube 40. The plurality of bayonet holes 52 are distributed in a spiral. Therefore, when the guide wire storage tube 40 is sequentially inserted into the bayonet holes 52, the guide wire storage tube 40 can be spirally fixed on the coiling seat 50.

[0061] like Figure 1 、 Figure 2As shown, a first spring 32 is fixed between the blood guide shell 13 and the slider 31. When pushing the guide wire, the first dial 33 is placed outside the slider 31. At this time, the thumb is detached from the first dial 33, and the first spring 32 rebounds and the first dial 33 no longer clamps the guide wire. At this time, under the elastic rebound action of the first spring 32, the slider 31 can slide toward the direction of the connector 11. Then the thumb presses the first dial 33 to clamp the guide wire through the round wheel, pushing the slider 31 to slide toward the blood guide shell 13, and the first spring 32 is compressed.

[0062] like Figure 2 As shown, the blood guide shell 13 and the catheter sheath 20 are connected by a connecting tube 21 with a frustum-shaped structure, so that the guide wire can be easily inserted into the guide tube 131 and then guided to the catheter sheath 20 through the frustum-shaped connecting tube 21 .

[0063] like Figure 8 、 Figure 11 、 Figure 12 As shown, rubber pads 37 are fixedly installed on the opposite sides of the first dial 33 and the second dial 34. After the guide wire is clamped between the two rubber pads 37, the friction coefficient with the guide wire can be increased, and damage to the guide wire can be avoided when the first dial 33 and the second dial 34 are clamped.

[0064] Working principle: The guidewire is inserted into the guidewire storage tube 40 through the end away from the perforation 111. The guidewire storage tube 40 is then sequentially inserted into the bayonet 52 on the support rod 51, so that the guidewire inside the guidewire storage tube 40 is stored in a spiral shape, and the head of the guidewire passes through the perforation 111. When not in use, the first spring 32 elastically supports the slider 31 close to the connector 11, and the second spring 344 elastically rebounds to separate the first dial 33 and the second dial 34, so that the guidewire passes through the two rubber pads 37 and into the guide tube 131, and then is guided by the connecting tube 21 into the catheter sheath 20;

[0065] When the guide wire needs to be inserted, the doctor holds the guide seat 10 with his palm and presses the first dial wheel 33 toward the second dial wheel 34 with his thumb. The second spring 344 elastically contracts into the spring groove 343. The two rubber pads 37 clamp the guide wire, and the first dial wheel 33 and the second dial wheel 34 form a circular wheel state. The first arc-shaped rail 331 and the second arc-shaped rail 341 form a circular track. At this time, the doctor uses his thumb to dial and push the circular wheel back and forth, so that the slider 31 slides toward the direction of the blood guide shell 13, and the first spring 32 generates an elastic rebound force, which can drive the guide wire to be inserted into the catheter sheath 20.

[0066] Then, the thumb releases the first dial 33, and the second spring 344 rebounds to support the first dial 33 upward. The first dial 33 no longer presses the guide wire. Under the elastic rebound force of the first spring 32, the slider 31 slides along the guide rail 12 toward the connector 11. Then, the above-mentioned guide wire insertion action is repeated to continuously insert the guide wire into the blood vessel through the guide sheath 20.

[0067] When the guide wire needs to be removed, the slider 31 is simply pushed toward the blood guide housing 13. The first dial 33 is then pressed with the thumb to clamp the guide wire on the circular wheel. The thumb is then used to slide the circular wheel and the slider 31 toward the connector 11. Finally, the first dial 33 is released.

[0068] When it is necessary to position the round wheel after clamping the guide wire on the guide seat 10, the thumb presses the first dial wheel 33 and keeps the round wheel in the counterclockwise direction, and at the same time pushes the slider 31 to slide along the guide rail 12, and when the positioning pin 35 slides above the corresponding positioning hole 121, the positioning pin 35 is pressed downward by the slope of the slope block 36 and inserted into the corresponding positioning hole 121. At the same time, the first dial wheel 33 and the second dial wheel 34 are partially stuck in the rotating groove 311, and the inner wall of the rotating groove 311 limits the first dial wheel 33 and the second dial wheel 34 to always keep the round wheel state. At this time, the round wheel holding the guide wire and the slider 31 are fixed on the guide rail 12 to prevent the guide wire from being pulled out by mistake.

[0069] Finally, when the guide wire needs to be pushed again, the thumb is used to turn the round wheel clockwise, and the positioning pin 35 slides into the arc groove 312 along the slope of the slope block 36. The third spring 351 elastically rebounds so that the positioning pin 35 is accommodated in the step hole 313, and the first dial wheel 33 is placed on the outside of the slider 31.

[0070] The present invention has been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A guide wire insertion device for cardiovascular interventional surgery, characterized by: It comprises a guide seat (10), one end of the guide seat (10) is connected to a catheter sheath (20), the other end is connected to a guide wire storage tube (40), and a guide wire guiding and twisting assembly (30) is slidably provided on the guide seat (10); The guide wire guiding and twisting assembly (30) comprises a slider (31), a positioning pin (35) is elastically inserted into the slider (31), a second thumbwheel (34) is rotatably connected to the slider (31), and the second thumbwheel (34) is elastically connected to the first thumbwheel (33); The guide wire is clamped by the first dial wheel (33) and the second dial wheel (34), both of which are fan-shaped structures and form a circular wheel. The guide wire is inserted into the catheter sheath (20) along the guide seat (10) through the reciprocating circular wheel. The first dial wheel (33) and the second dial wheel (34) are moved and placed on the slider (31), and the round wheels clamp the guide wire; the positioning pin (35) is squeezed and inserted into the guide seat (10) by the second dial wheel (34) for positioning; The slider (31) is provided with a rotation groove (311), the first thumbwheel (33) and the second thumbwheel (34) are coaxially connected to the rotation groove (311), the slider (31) is provided with a step hole (313) along the radial direction of the rotation groove (311), the positioning pin (35) is slidably inserted in the step hole (313), and the positioning pin (35) is sleeved with a third spring (351); The guide seat (10) includes a guide rail (12), the slider (31) is slidably arranged on the guide rail (12), and the guide rail (12) is provided with a plurality of positioning holes (121) adapted to and corresponding to the positioning pins (35); An annular groove (345) is formed on the outer wall of the second thumbwheel (34), and a slope block (36) is fixed to one end of the annular groove (345); A connector (11) is fixed to one end of the guide rail (12), and a blood guide shell (13) is fixed to the other end. The connector (11) is provided with a through hole (111) connected to the guide wire storage tube (40). The end of the blood guide shell (13) close to the connector (11) is connected to the guide tube (131). The through hole (111), the guide tube (131), the guide wire storage tube (40), and the circular wheel are coaxially arranged. One side of the blood guide shell (13) is connected to the blood outlet tube (14).

2. A guide wire insertion guide device for cardiovascular interventional surgery according to claim 1, characterized in that: The inner wall of the rotating groove (311) is symmetrically provided with an arc groove (312), the arc groove (312) and the rotating groove (311) are coaxial, the first arc rail (331) is coaxially fixed on both axial sides of the first thumbwheel (33), and the second arc rail (341) is coaxially fixed on both axial sides of the second thumbwheel (34), the first arc rail (331) and the second arc rail (341) form a circular rail, and the circular rail rotates along the arc groove (312).

3. The guide wire insertion guide device for cardiovascular interventional surgery according to claim 1, characterized in that: A guide rod (332) is symmetrically fixed to the side of the first dial wheel (33) away from the arc surface, and a guide hole (342) adapted to the guide rod (332) is provided on the side of the second dial wheel (34) close to the first dial wheel (33). The second dial wheel (34) is also provided with a spring groove (343) arranged in the same direction as the guide rod (332), and a second spring (344) is fixed between the spring groove (343) and the first dial wheel (33).

4. A guide wire insertion guide device for cardiovascular interventional surgery according to claim 1, characterized in that: The guidewire storage tube (40) is spirally coiled on a coiling seat (50), and the coiling seat (50) includes a plurality of annularly distributed support rods (51). The support rods (51) are provided with a plurality of bayonet holes (52), and the bayonet holes (52) are adapted to the guidewire storage tube (40).

5. The guide wire insertion guide device for cardiovascular interventional surgery according to claim 1, characterized in that: A first spring (32) is fixed between the blood guiding shell (13) and the slider (31).

6. The guide wire insertion guide device for cardiovascular interventional surgery according to claim 1, characterized in that: The blood guide shell (13) and the catheter sheath (20) are connected via a connecting tube (21) with a frustum-shaped structure.

7. The guide wire insertion guide device for cardiovascular interventional surgery according to claim 1, characterized in that: Rubber pads (37) are fixedly mounted on opposite sides of the first thumbwheel (33) and the second thumbwheel (34), and the guide wire is clamped between the two rubber pads (37).

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