Guiding catheter for coronary sinus radiography

Abstract

The invention discloses a guiding catheter for coronary sinus radiography, and relates to the technical field of medical instruments, the guiding catheter comprises a catheter, the end portion of the catheter is fixedly connected with a pressure sensor, the guiding catheter further comprises a top plate and a bottom plate, the top plate and the bottom plate are fixedly connected through a plurality of vertical connecting plates, and the inner side of the top plate and the inner side of the bottom plate are fixedly connected with limiting sleeves; an annular groove formed by the two limiting sleeves wraps the guide pipe, the diameter of the annular groove formed by the two limiting sleeves is larger than that of the guide pipe, and a reciprocating driving mechanism for driving the guide pipe to move along the limiting sleeves is arranged between the top plate and the bottom plate. By means of the reciprocating driving mechanism, advancing or retreating of the catheter can be achieved, operation can be achieved with one hand, stabilization of the catheter, a guide wire, a sheathing canal and other parts is not needed, the advancing speed and the advancing distance can be selected according to needs, accurate control is achieved, and the catheter advancing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a guiding catheter for coronary sinus angiography. Background Art

[0002] Coronary sinus angiography is an interventional cardiovascular examination and an important tool for diagnosing coronary artery disease, particularly for evaluating lesions such as coronary artery stenosis and obstruction. A contrast agent is injected into the coronary sinus via a catheter, creating an X-ray image of the coronary sinus and its branches, visualizing vascular morphology, blood flow, and potential abnormalities, thereby assessing the structure and function of the cardiac venous system.

[0003] The common technique for advancing the catheter is to use the left hand to maintain stability while the right hand pushes the catheter tip to control depth. If resistance is encountered during advancement, the catheter is slightly withdrawn and the left hand is used to maintain stability while the right hand pushes the catheter until the catheter tip is fully inserted into the designated area.

[0004] During catheter advancement, the catheter needs to be frequently advanced and retracted, especially near the coronary sinus, where the advancement speed needs to be slowed down for more precise control. This process relies entirely on the experience of medical staff, making it difficult to achieve precise real-time control. Furthermore, during catheter advancement, the guidewire and sheath need to be kept stable, resulting in low catheter advancement efficiency. Therefore, this application proposes a guiding catheter for coronary sinus angiography to address the aforementioned issues. Summary of the Invention

[0005] The present invention provides a guiding catheter for coronary sinus angiography to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A guiding catheter for coronary sinus angiography comprises a catheter, the end of which is fixedly connected with a pressure sensor.

[0008] It also includes a top plate and a bottom plate, which are fixedly connected by multiple vertical connecting plates. The inner sides of the top plate and the bottom plate are fixedly connected to limiting sleeves. The annular groove formed by the two limiting sleeves covers the catheter, and the diameter of the annular groove formed by the two limiting sleeves is larger than the diameter of the catheter.

[0009] A reciprocating driving mechanism for driving the guide tube to move along the limiting sleeve is arranged between the top plate and the bottom plate.

[0010] A further improvement of the technical solution of the present invention is that: the reciprocating drive mechanism includes a pressure push plate movably connected to both sides of the catheter, one side of each of the pressure push plates is fixedly connected to a telescopic rod, one side of the telescopic rod is fixedly connected to a connecting block, a plurality of limiting slides are fixedly connected to the connecting block, a stabilizing slide bar movably connected through the limiting slide, both ends of the stabilizing slide bar are movably connected to the vertical connecting plate, the telescopic rod drives the pressure push plates to move in opposite directions, clamps the catheter and slides along the stabilizing slide bar, driving the catheter to move a certain distance.

[0011] A further improvement of the technical solution of the present invention is that: a follower rod is movably connected to the outer side of the connecting block, and a driving rod is movably connected to the follower rod. One end of the driving rod is driven by a driving device to rotate the driving rod, driving the follower rod to pull the connecting block to move.

[0012] A further improvement of the technical solution of the present invention is that: a second card slot is provided on the driven rod, a first card slot is provided at one end of the driving rod, one end of the driving rod is movably connected to the inner wall of the second card slot, a card block is movably connected to the inner wall of the first card slot, a rotating shaft is movably connected through the card block, a rotating card slot is provided on the driven rod, and the rotating shaft is movably connected to the inner wall of the rotating card slot.

[0013] A further improvement of the technical solution of the present invention is that: a driving slider is fixedly connected to the driving device, the driving slider is movably connected to the stabilizing slide bar, and the stabilizing slide bar is provided with a thread adapted to the driving slider.

[0014] A further improvement of the technical solution of the present invention is that: a buffer groove is opened on one side of the connecting block, a buffer slide rod is fixedly connected to the inner wall of the buffer groove, a connecting slider is movably connected through the outer surface of the buffer slide rod, and one end of the driven rod is movably connected to the outer surface of the connecting slider.

[0015] A further improvement of the technical solution of the present invention is that a directional arrow is fixedly connected to the outer surface of the driving slider, and a scale line is correspondingly provided on the side surface of the top plate.

[0016] A further improvement of the technical solution of the present invention is that: the bottom of the base plate presents a certain curvature, and a plurality of fixing straps are fixedly connected to both sides of the base plate.

[0017] A further improvement of the technical solution of the present invention is that: a plurality of lifting rods are fixedly connected to the bottom of the base plate, and two fixed splints are movably connected through the plurality of lifting rods, and the two fixed splints can move along the lifting rods.

[0018] A further improvement of the technical solution of the present invention is that: two fixing nuts are threadedly connected to the lifting rod, and the two fixing nuts are respectively located at the top and bottom of the two fixing splints.

[0019] Due to the adoption of the above technical solution, the present invention has the following technical advancements compared to the prior art:

[0020] 1. The present invention provides a guiding catheter for coronary sinus angiography, which can realize the advancement or retraction of the catheter through the action of a reciprocating drive mechanism, can be operated with one hand, and does not require the stabilization of the catheter, guide wire, sheath and other parts. In addition, the advancement speed and advancement distance can be selected as needed to achieve more precise control and improve the catheter advancement efficiency.

[0021] 2. The present invention provides a guiding catheter for coronary sinus angiography. When the catheter needs to be advanced, the telescopic rod drives the push plate to move in opposite directions, clamps the catheter and slides it along the stabilizing slide bar, driving the catheter to advance a certain distance. The telescopic rod then drives the push plate to release the catheter, and the above operation is repeated to maintain a relatively stable advancement action.

[0022] 3. The present invention provides a guiding catheter for coronary sinus angiography. Under the driving action of driving device one, the driving rod performs circular motion, driving the connecting block to move forward the maximum distance. Then, the telescopic rod drives the pressing push plate to release the catheter. At this time, the catheter is not clamped. Therefore, under the continued driving action of driving device one, the driving rod drives the driven rod to return to its original position. Then, the telescopic rod drives the pressing push plate to clamp the catheter. Then, the driving device one drives the driving rod to rotate repeatedly, driving the driven rod to pull the connecting block to move a certain distance. By controlling the rotational speed of the driving rod driven by driving device one, the advancement speed of the catheter can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a structural schematic diagram of another aspect of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the present invention when there is no top plate;

[0026] Figure 4 This is a schematic diagram of the structure of the connecting block of the present invention when it moves;

[0027] Figure 5 This is a structural diagram of a lifting rod connected to the bottom of the base plate of the present invention;

[0028] Figure 6 This is a structural diagram of the buffer chute of the present invention;

[0029] Figure 7 Schematic diagram of the structure of the connection between the driven rod and the driving rod of the present invention;

[0030] Figure 8 For the present invention Figure 4Schematic diagram of the enlarged structure at point A in the middle.

[0031] In the figure: 1. catheter; 2. pressure sensor; 3. top plate; 4. bottom plate; 5. limit sleeve; 6. vertical connecting plate; 7. push plate; 8. telescopic rod; 9. connecting block; 10. limit slide plate; 11. stabilizing slide bar; 12. buffer slide; 13. buffer slide bar; 14. connecting slider; 15. driven rod; 16. driving rod; 17. slot 1; 18. slot 2; 19. clamping block; 20. rotating shaft; 21. rotating slot; 22. driving device 1; 23. driving slider; 24. pointing arrow; 25. scale line; 26. fixing strap; 27. driving device 2; 28. lifting rod; 29. fixing nut; 30. fixing splint. DETAILED DESCRIPTION

[0032] The present invention is described in further detail below in conjunction with the embodiments:

[0033] Example:

[0034] like Figure 1-8 As shown, the present invention provides a guiding catheter for coronary sinus angiography, comprising a catheter 1, the end of which is fixedly connected to a pressure sensor 2, the pressure sensor 2 being of prior art, and the catheter 1 being of prior art, with an adjustable end bend setting, the proximal adjustable bend section being 5-8 cm away from the head end, and adopting a nickel-titanium alloy braided layer + a high molecular polymer coating, the bending angle of 0° to 180° is controlled by a handle knob to adapt to anatomical variations of the CS entrance, such as a high opening or an acute angle, the distal pre-shaped section being 3-5 cm away from the head end, with a preset 30° to 45° J-shaped or reverse S-shaped bend, which conforms to the morphology of the CS-Marshall venous transition zone and provides stable support.

[0035] It also includes a top plate 3 and a bottom plate 4, which are fixedly connected by multiple vertical connecting plates 6. The inner sides of the top plate 3 and the bottom plate 4 are fixedly connected to the limiting sleeves 5. The annular groove formed by the two limiting sleeves 5 covers the catheter 1. The diameter of the annular groove formed by the two limiting sleeves 5 is larger than the diameter of the catheter 1. The range of movement of the catheter 1 is limited by the limiting sleeves 5 and no deviation occurs.

[0036] A reciprocating drive mechanism is provided between the top plate 3 and the bottom plate 4 to drive the catheter 1 to move along the limit sleeve 5. The reciprocating drive mechanism can realize the advancement or retraction of the catheter 1 and can be operated with one hand. There is no need to stabilize the catheter 1, guide wire, sheath and other parts, and the advancement speed and advancement distance can be selected according to needs to achieve more precise control and improve the catheter advancement efficiency.

[0037] Furthermore, the reciprocating drive mechanism includes a pressure push plate 7 movably connected to both sides of the catheter 1. The pressure push plate 7 is made of soft material, and the process of clamping or loosening the catheter 1 will not affect the catheter 1. Each pressure push plate 7 is fixedly connected to one side of a telescopic rod 8, and one side of the telescopic rod 8 is fixedly connected to a connecting block 9. A plurality of limiting slides 10 are fixedly connected to the connecting block 9. A stabilizing slide bar 11 is movably connected to the limiting slide bar 10. Both ends of the stabilizing slide bar 11 are movably connected to the vertical connecting plate 6. When the catheter 1 needs to be advanced, the telescopic rod 8 drives the pressure push plate 7 to move in opposite directions, clamps the catheter 1 and slides along the stabilizing slide bar 11, driving the catheter 1 to advance a certain distance, and then drives the pressure push plate 7 to release the catheter 1 through the telescopic rod 8, and repeats the above operation to maintain a relatively stable propulsion action.

[0038] Furthermore, the outer side of the connecting block 9 is movably connected to a driven rod 15, and the driven rod 15 is movably connected to a driving rod 16. One end of the driving rod 16 drives the driving rod 16 to rotate through a driving device 22, driving the driven rod 15 to pull the connecting block 9 to move. Under the driving action of the driving device 22, the driving rod 16 makes a circular motion, and after the connecting block 9 moves forward the longest distance, the telescopic rod 8 drives the push plate 7 to release the catheter 1. At this time, the catheter 1 is not clamped. Therefore, under the continued driving action of the driving device 22, the driving rod 16 drives the driven rod 1 After returning to its original position, the telescopic rod 8 drives the push plate 7 to clamp the catheter 1, and then the driving device 22 is repeated to drive the driving rod 16 to rotate, driving the driven rod 15 to pull the connecting block 9 to move a certain distance. By controlling the rotation speed of the driving rod 16 driven by the driving device 22, the advancement speed of the catheter 1 can be controlled. During the first half of the advancement process, when the pressure sensor 2 detects that the advancement pressure is higher than the pressure during the normal advancement state, the push plate 7 maintains the state of clamping the catheter 1 in the second half of the advancement process, and the catheter 1 can be driven to retreat a certain distance, and the above operation is repeated.

[0039] Furthermore, a second slot 18 is provided on the driven rod 15, and a first slot 17 is provided at one end of the driving rod 16. One end of the driving rod 16 is movably connected to the inner wall of the second slot 18, and a block 19 is movably connected to the inner wall of the first slot 17. A rotating shaft 20 is movably connected to the block 19. A rotating slot 21 is provided on the driven rod 15, and the rotating shaft 20 is movably connected to the inner wall of the rotating slot 21. The block 19 is movably connected to the driven rod 15 through the rotating shaft 20. Through the setting of the first slot 17, one end of the driving rod 16 can extend into the second slot 18. At this time, the rotation radius of the driven rod 16 changes when the driving rod 16 drives the driven rod 15 to rotate, so that the propulsion distance of the catheter 1 changes. Therefore, the propulsion distance of the catheter 1 can be adjusted by adjusting the position of the block 19 in the first slot 17.

[0040] Furthermore, a driving slider 23 is fixedly connected to the driving device 1 22, and the driving slider 23 is movably connected to the stabilizing slide bar 11. A thread compatible with the driving slider 23 is provided on the stabilizing slide bar 11. When the driven rod 15 and the driving rod 16 are in the initial state, the stabilizing slide bar 11 can be driven to rotate by the driving device 2 27 installed on the vertical connecting plate 6, and the driving slider 23 engaged with it can be driven to move along the stabilizing slide bar 11, thereby changing the driving radius between the driving rod 16 and the driven rod 15, thereby achieving the purpose of adjusting the propulsion distance.

[0041] Furthermore, a buffer groove 12 is provided on one side of the connecting block 9, and a buffer slide rod 13 is fixedly connected to the inner wall of the buffer groove 12. A connecting slider 14 is movably connected to the outer surface of the buffer slide rod 13, and one end of the driven rod 15 is movably connected to the outer surface of the connecting slider 14. Through the arrangement of the above structure, after a single advancement distance is completed, the driven rod 15 still needs to push the connecting slider 14 to move a certain distance along the buffer slide rod 13, and the position of the connecting block 9 does not change, resulting in a time interval. At this time, the telescopic rod 8 can be used to drive the push plate 7 to clamp or release the catheter 1 to reserve a certain time.

[0042] Furthermore, a pointing arrow 24 is fixedly connected to the outer surface of the driving slider 23, and a scale line 25 is correspondingly provided on the side of the top plate 3. When the driving slider 23 moves, the pointing arrow 24 and the scale line 25 can form a guide to clearly indicate the change in the advancement distance.

[0043] Furthermore, the bottom of the base plate 4 presents a certain curvature, and a plurality of fixing straps 26 are fixedly connected to both sides of the base plate 4 to facilitate fixing and restraining the patient's arms or torso.

[0044] Furthermore, a plurality of lifting rods 28 are fixedly connected to the bottom of the base plate 4, and two fixed splints 30 are movably connected through the plurality of lifting rods 28. The two fixed splints 30 can move along the lifting rods 28. The gap formed between the two fixed splints 30 can be clamped at the edge of the bed, and the positions of the two fixed splints 30 on the lifting rods 28 can be adjusted to adjust the use height of the device.

[0045] Furthermore, two fixing nuts 29 are threadedly connected to the lifting rod 28, and the two fixing nuts 29 are respectively located at the top and bottom of the two fixing splints 30. By adjusting the positions of the two fixing nuts 29, the distance between the two fixing splints 30 can be adjusted to facilitate fixation.

[0046] Furthermore, the driving device 1 22 and the driving device 2 27 are both existing technologies, and are used to drive the rotation of the driving rod 16 and the stabilizing slide rod 11 respectively.

Claims

1. A guiding catheter for coronary sinus angiography, comprising a catheter (1), characterized in that: The end of the catheter (1) is fixedly connected to a pressure sensor (2); It also includes a top plate (3) and a bottom plate (4), wherein the top plate (3) and the bottom plate (4) are fixedly connected via a plurality of vertical connecting plates (6), and the inner sides of the top plate (3) and the bottom plate (4) are fixedly connected to limiting sleeves (5), and the annular groove formed by the two limiting sleeves (5) covers the conduit (1) therein, and the diameter of the annular groove formed by the two limiting sleeves (5) is larger than the diameter of the conduit (1); A reciprocating drive mechanism for driving the guide tube (1) to move along the limiting sleeve (5) is provided between the top plate (3) and the bottom plate (4).

2. A guiding catheter for coronary sinus angiography according to claim 1, characterized in that: The reciprocating drive mechanism includes a push plate (7) movably connected to both sides of the catheter (1), one side of each push plate (7) is fixedly connected to a telescopic rod (8), one side of the telescopic rod (8) is fixedly connected to a connecting block (9), a plurality of limiting slides (10) are fixedly connected to the connecting block (9), and a stabilizing slide bar (11) is movably connected through the limiting slide bar (10), and both ends of the stabilizing slide bar (11) are movably connected to the vertical connecting plate (6). The telescopic rod (8) drives the push plate (7) to move in opposite directions, clamps the catheter (1) and slides along the stabilizing slide bar (11), driving the catheter (1) to move a certain distance.

3. The guiding catheter for coronary sinus angiography according to claim 2, characterized in that: The outer side of the connecting block (9) is movably connected to a driven rod (15), and the driven rod (15) is movably connected to a driving rod (16). One end of the driving rod (16) drives the driving rod (16) to rotate through a driving device (22), thereby driving the driven rod (15) to pull the connecting block (9) to move.

4. The guiding catheter for coronary sinus angiography according to claim 3, characterized in that: The driven rod (15) is provided with a second clamping groove (18), one end of the driving rod (16) is provided with a first clamping groove (17), one end of the driving rod (16) is movably connected to the inner wall of the second clamping groove (18), a clamping block (19) is movably connected to the inner wall of the first clamping groove (17), a rotating shaft (20) is movably connected to the clamping block (19), a rotating groove (21) is provided on the driven rod (15), and the rotating shaft (20) is movably connected to the inner wall of the rotating clamping groove (21).

5. The guiding catheter for coronary sinus angiography according to claim 3, characterized in that: A driving slider (23) is fixedly connected to the driving device (22), and the driving slider (23) is movably connected to the stabilizing slide bar (11). The stabilizing slide bar (11) is provided with a thread adapted to the driving slider (23).

6. The guiding catheter for coronary sinus angiography according to claim 2, characterized in that: A buffer chute (12) is provided on one side of the connecting block (9), a buffer slide rod (13) is fixedly connected to the inner wall of the buffer chute (12), a connecting slider (14) is movably connected to the outer surface of the buffer slide rod (13), and one end of the driven rod (15) is movably connected to the outer surface of the connecting slider (14).

7. The guiding catheter for coronary sinus angiography according to claim 5, characterized in that: A directional arrow (24) is fixedly connected to the outer surface of the driving slider (23), and a scale line (25) is correspondingly provided on the side surface of the top plate (3).

8. The guiding catheter for coronary sinus angiography according to claim 1, characterized in that: The bottom of the bottom plate (4) presents a certain curvature, and a plurality of fixing straps (26) are fixedly connected to both sides of the bottom plate (4).

9. The guiding catheter for coronary sinus angiography according to claim 1, characterized in that: The bottom of the base plate (4) is fixedly connected to a plurality of lifting rods (28), and two fixed clamping plates (30) are movably connected to the plurality of lifting rods (28). The two fixed clamping plates (30) can move along the lifting rods (28).

10. The guiding catheter for coronary sinus angiography according to claim 9, characterized in that: The lifting rod (28) is threadedly connected with two fixing nuts (29), and the two fixing nuts (29) are respectively located at the top and bottom of the two fixing clamps (30).

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