Guide system for aortic valve crossing

Abstract

The invention discloses a guiding system for aortic valve crossing, and relates to the technical field of medical instruments. The device comprises a guide device and a guide wire, the guide device comprises a guide pipe, a communicating channel is arranged in the guide pipe, and a threading channel is formed in the pipe wall in the guide pipe; one end of the traction piece is provided with a working end connected with the far end of the catheter, the other end of the traction piece is provided with a control end, and one end of the control end extends towards the near end of the catheter through the threading channel; the control handle is respectively connected with the near end of the catheter and the control end of the traction piece; the guide wire is movably arranged in the communication channel in a penetrating mode. Blood flow pressure in all directions is measured through the pressure sensors, the position, with the maximum pressure, of the far end of the catheter is aligned to the aortic valve opening, finally, the guide wire is delivered along a channel established by the catheter and crosses the aortic valve, and the success rate of catheter and / or guide wire valve crossing is increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular, relates to a guiding system for aortic valve transvalvular operation. Background Art

[0002] In transcatheter aortic valve intervention, a guidewire is usually inserted through the puncture point first, and after the guidewire successfully crosses the aortic valve, a catheter or other interventional device is inserted through the guidewire. However, it is difficult for the guidewire to successfully cross the aortic valve in one go, which increases the difficulty of the operator's operation, and multiple operations are prone to corresponding operational risks and complications.

[0003] In view of this, the present invention is proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a guiding system for aortic valve transvalvular operation.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A guide system for aortic valve transvalvular operation having opposing proximal and distal ends, including a guide device and a guidewire;

[0007] The guiding device comprises a catheter, a connecting channel is provided inside the catheter, and a penetrating channel is opened on the tube wall inside the catheter;

[0008] A traction member, one end of which is provided with a working end connected to the distal end of the catheter, and the other end of which is provided with a control end, and one end of which extends toward the proximal end of the catheter through the guide channel;

[0009] A control handle, the control handle is connected to the proximal end of the catheter and the control end of the traction member respectively;

[0010] The guide wire is movably arranged in the connecting channel;

[0011] The distal end of the traction catheter at the working end is controlled by the control end to bend so that the distal end of the guide wire faces the valve orifice.

[0012] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0013] Optionally, the traction member includes one or more traction wires;

[0014] A plurality of traction wires are arranged at intervals along the circumference of the catheter and each is independently configured with a guiding channel.

[0015] Optionally, the number of the traction members is three;

[0016] The arrangement orientation of the working end of the traction member is: A is arranged at uniform intervals along the circumferential direction;

[0017] Or B wherein two working ends are located at two opposite sides of the catheter in the radial direction, and the third working end is located at the midpoint of the two working ends along the circumference of the catheter.

[0018] Optionally, at the distal end of the catheter, a metal ring is fixedly provided inside the tube wall, and the working ends of all traction members are fixedly connected to the metal ring.

[0019] Optionally, the number of traction members is set to be multiple, and the control handle is used to control the movement of the control end of each traction member.

[0020] Optionally, the control handle is also provided with a position locking mechanism acting on the control end.

[0021] Optionally, the distal end of the catheter is provided with a development mark;

[0022] The configuration of the development mark is at least one of the following:

[0023] Independently configured and fixed to the catheter;

[0024] The metal ring also serves as;

[0025] The distal end of each traction member also serves as this function.

[0026] Optionally, a plurality of pressure sensors are installed in the catheter, and the pressure sensors are fixed in the catheter to detect fluid pressure.

[0027] Optionally, a plurality of pressure measuring holes are arranged in the tube wall along the axial direction of the catheter, a plurality of pressure sensors correspond to the pressure measuring holes, and fluid channels respectively connected to the pressure measuring holes and the pressure sensors are arranged in the tube wall.

[0028] Optionally, the pressure sensor uses wireless communication, and the guidance system also includes a wireless communication data reading device connected to the pressure sensor.

[0029] Optionally, the catheter includes a predetermined bending section and a straight section from near to far in the vicinity of the distal end, and the traction member extends to the distal end of the catheter through the outer side of the bending section. When the bending is adjusted, the curvature of the bending section increases.

[0030] Optionally, in the pre-formed state, the angle α of the bent section ranges from 45 to 120 degrees, the length of the bent section along its own extension direction is 20 to 40 mm, and the length of the straight section is 20 to 60 mm.

[0031] Optionally, the distal end of the straight segment has a first development mark, and the connecting position between the midpoint of the bent segment and the straight segment has a second development mark.

[0032] Optionally, a pressure sensor for detecting fluid pressure is included, and two pressure sensors are arranged along the axial direction of the catheter:

[0033] A distal pressure sensor is disposed at the distal end of the straight section;

[0034] The proximal pressure sensor is arranged at the midpoint of the bending section.

[0035] Optionally, the distal pressure sensor and the proximal pressure sensor are arranged relatively along the circumference of the catheter, and the catheter is provided with a relative inner side and outer side. The distal pressure sensor is installed on the inner side of the catheter, and the proximal pressure sensor is installed on the outer side of the catheter.

[0036] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all the advantages described below at the same time:

[0037] The guidance system of the present application is first delivered to a preset position in the body by a catheter, and then the distal end of the catheter is driven by a control handle to adjust the direction, wherein the direction of the maximum fluid pressure at the aortic root is aligned with the aortic valve orifice. Finally, the guide wire is delivered along the channel established by the catheter and crosses the aortic valve, thereby improving the success rate of catheter or guide wire crossing the valve.

[0038] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0040] Figure 1 A schematic diagram of a guidance system according to an embodiment of the present application;

[0041] Figure 2 This is a schematic diagram of the structure of a guidance system according to an embodiment of the present application;

[0042] Figure 3 A schematic diagram of the alignment of a catheter in a guiding system according to an embodiment of the present application;

[0043] Figure 4 This is a schematic diagram of a guide wire before it crosses a valve in a guidance system according to an embodiment of the present application;

[0044] Figure 5 for Figure 3 The middle diagram is a schematic diagram of the guide wire being passed through the valve after the catheter is aligned;

[0045] Figure 6 A schematic diagram of a catheter alignment process in a guidance system according to an embodiment of the present application;

[0046] Figure 7 A schematic diagram of a radial cross section of a catheter in a guiding system according to an embodiment of the present application;

[0047] Figure 8 This is a schematic structural diagram of a traction member, a metal ring and a catheter in a guiding system in an embodiment of the present application;

[0048] Fig. 9 This is a schematic diagram of a control handle and a traction member in a guidance system according to an embodiment of the present application;

[0049] Fig.10 A schematic diagram of a control handle and a traction member in a guidance system according to another embodiment of the present application;

[0050] Fig.11 A schematic diagram of the arrangement of pressure sensors in a guidance system according to an embodiment of the present application;

[0051] Fig.12 for Fig.11 A is an enlarged schematic diagram of an embodiment of the invention;

[0052] Fig.13 for Fig.11 A is an enlarged schematic diagram of another embodiment of the invention;

[0053] Fig.14 This is a schematic diagram of a catheter in a guiding system in another embodiment of the present application when the catheter is in a correct posture;

[0054] Fig.15 This is a schematic diagram of a catheter in a guiding system in another embodiment of the present application when the catheter is in a correct posture;

[0055] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0056] 10. Valve orifice; 11. Distal end; 12. Proximal end;

[0057] 100, catheter; 101, inner side; 102, outer side; 110, connecting channel; 120, tube wall; 121, threading channel; 130, metal ring; 140, pressure measuring hole; 141, fluid channel; 142, pressure sensor; 143, wiring harness; 150, bending section; 151, first developing mark; 152, second developing mark; 160, straight section;

[0058] 200, guide wire; 300, traction member; 310, working end; 310a, working end; 310b, working end; 320, control end;

[0059] 400, control handle; 410, support body; 420, transmission seat.

[0060] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0061] The present invention will now be described in further detail with reference to the accompanying drawings.

[0062] See also Figure 1-15 As shown, in this embodiment, a guiding system for aortic valve transvalvular operation is provided, which has a relative proximal end 12 and a distal end 11, and includes a guiding device and a guide wire 200. The guiding device includes a catheter 100, a traction member 300, a pressure sensor 142 and a control handle 400. The interior of the catheter 100 is an axially through-going connecting channel 110, and the connecting channel 110 can be used to flexibly insert the guide wire 200 or other micro-catheters. The tube wall 120 of the catheter 100 is also provided with a guide channel 121. One end of the traction member 300 is a working end 310, and the other end is a control end 320, wherein the working end 310 is fixedly connected to the distal end of the catheter 100. It should be emphasized that the distal end is not strictly limited to the distal end of the catheter 100, and can also be a position adjacent to the distal end. The control end 320 extends to the proximal end through the guide channel 121, and the rest of the traction member 300 except the working end 310 is movable relative to the guide channel 121.

[0063] The proximal end of the catheter 100 and the control end 320 of the traction member 300 are connected to and controlled by the control handle 400, wherein the control end 320 is movably matched with the control handle 400. The distal end of the catheter 100 is provided with a closing structure, which radially contracts from the proximal end to the distal end to facilitate the catheter 100 to pass through the body.

[0064] In actual use:

[0065] The control handle 400 operates the control end 320 to move and drives the distal end of the catheter 100 to bend through the working end 310. This operation is defined as a bending operation. The purpose of the bending operation is to guide the catheter 100 to bend during delivery in the body so as to pass through curved or circuitous blood vessels of the human body, and to align the distal end of the catheter 100 with the relative position of the target object when reaching the preset position. For example, in this embodiment, the preset position is near the aortic valve orifice 10, and the control handle 400 makes the catheter 100 move along the Figure 3The dotted line shown moves to the solid line position, completing the alignment of the distal end of the catheter 100 with the aortic valve orifice 10. The blood flow pressure in each direction can be measured by the pressure sensor 142, and the direction with the maximum pressure indicates that the distal end of the catheter 100 is aligned with the aortic valve orifice. (It should be noted that this movement path is only for illustration, and it is not strictly required that the catheter must move along this path).

[0066] After the alignment operation is completed, the guidewire 200 is further delivered, and the guidewire 200 can quickly cross the aortic valve (such as Figure 4 and Figure 5 or the catheter 100 is operated to cross the aortic valve first, and then the guide wire 200 is delivered (as shown in Figure 5 shown).

[0067] The guidance system provided in the present application improves the success rate of catheter or guidewire crossing the aortic valve, reduces the difficulty of operation for the operator, and reduces the risk of causing complications.

[0068] In one embodiment, the specific operations are as follows:

[0069] 1. Deliver the catheter 100 along a human blood vessel to the outflow side of the aortic valve;

[0070] 2. Delivering the guide wire 200 along the catheter 100;

[0071] 3. Determine whether the distal end of the guide wire 200 is aligned with the implantation position (valve orifice of the valve) by combining with imaging equipment;

[0072] If the distal end of the guide wire 200 is not aligned with the implantation position, the traction member 300 is adjusted to bend the distal end of the catheter 100, and then the distal end of the guide wire is adjusted to point until the distal end of the guide wire 200 is aligned with the implantation position;

[0073] 4. The guidewire 200 is further transported along the catheter 100, and the guidewire 200 passes through the aligned implantation position, thus completing the valve-crossing of the guidewire 200;

[0074] 5. Measure the pressure in the left ventricle through the catheter 100.

[0075] Furthermore, after completing the above step 3, the traction member 300 is locked at the control handle to fix the position of its distal end.

[0076] After the guidewire 200 completes the transvalvular movement, the catheter 100 is withdrawn and other interventional devices are delivered along the guidewire; or the catheter 100 continues to move forward along the guidewire 200 so that the catheter 100 passes through the aligned implantation position (transvalvular movement), and then the guidewire 200 is withdrawn and other interventional devices are delivered through the catheter 100.

[0077] In one embodiment, the traction member 300 includes one or more traction wires, the number of which matches the bending direction of the catheter 100, wherein the multiple traction wires are arranged at intervals along the circumference of the catheter 100 and each independently configures a guide channel 121, and the "independent configuration" of each guide channel 121 is understood to mean that the guide channels 121 are not connected to each other. Further preferably, the multiple traction wires are evenly spaced along the circumference of the catheter 100. For example, if there are three traction wires, the arrangement orientation of the working end 310 of the traction wire is:

[0078] like Figure 7 As shown, A three traction wires are evenly spaced along the circumference of the catheter 100; or

[0079] like Figure 7 As shown in FIG. 1 , two working ends 310 a are located at two opposite sides of the catheter in the radial direction, and the third working end 310 b is located at the midpoint of the two working ends 310 a along the circumference of the catheter.

[0080] For fixing the traction wire working end 310, as Fig. 9 As shown, in one embodiment, at the distal end of the catheter 100, a metal ring 130 is fixedly disposed in the tube wall 120, and the working end 310 of the traction wire is fixedly connected to the metal ring 130. The distal end of the catheter 100 has a developing mark, and the configuration of the developing mark is at least one of the following:

[0081] For example, it can be a separate component and fixed to the catheter 100, or it can be concurrently served by the metal ring 130, or by the distal end portion of each traction member 300 (including but not limited to the working end 310, or a portion adjacent to the working end 310).

[0082] The present application provides a control handle for controlling a traction member, the control handle 400 includes a support body 410, a transmission seat 420 and a driving member, wherein the transmission seat 420 is movably mounted on the support body 410 and connected to the control end 320 of the traction member 300, and the driving member is movably mounted on the support body 410 and linked to the transmission seat 420.

[0083] For example Fig. 9 The transmission seat 420 is rotatably mounted on the support body 410, the control end 320 of the traction member 300 is fixed on the transmission seat 420, the driving member is a knob and is rotatably mounted on the support body, and the driving member and the transmission seat 420 are directly or indirectly linked. Preferably, there is a mutual linkage relationship between the two traction members, specifically in combination with the aforementioned Figure 7The two traction members 300 (corresponding to the working end 310a) are arranged radially opposite to each other, and the control ends 320 of the two traction members 300 are fixedly connected to the same transmission seat 420. When the transmission seat 420 rotates, the two traction members 300 move synchronously in opposite directions to avoid resistance and safety hazards to the catheter 100 during bending. The control end 320 of the third traction member 300 (corresponding to the working end 310b) is connected to another transmission seat and is controlled by another driving member.

[0084] For example Fig.10 The transmission seat 420 is slidably installed on the support body 410, the control end 320 of the traction member 300 is fixed on the transmission seat 420, and the driving member is a knob rotatably installed on the support body 410 and threadedly matched with the transmission seat 420. The aforementioned traction member 300 (corresponding to the working end 310b) can adopt this driving structure.

[0085] In one embodiment, the control handle 400 is further provided with a position locking mechanism acting on each control end 320. The locking mechanism includes a locking member movably mounted on the support body, the locking member cooperates with one of the transmission seat or the driving member, and has a locking position for limiting the movement of the transmission seat or the driving member, and a release position for releasing the action on the transmission seat or the driving member.

[0086] like Figure 11 to Figure 13 As shown, in one embodiment, at least two pressure measuring holes 140 are arranged in the tube wall 120 along the axial direction of the catheter 100, and the tube wall 120 is also provided with a fluid channel 141 respectively connected to each pressure measuring hole 140. The guiding system also includes a pressure sensor 142 connected to the fluid channel 141. The pressure sensor 142 is, for example, an existing micro-invasive pressure sensor, which can be as shown in FIG. Fig.12 As shown, the pressure sensor 142 is built into the tube wall 120, or is disposed on the inner wall of the catheter 100. The pressure sensor 142 can be wireless or wired.

[0087] Key References Fig.12 The wire harness 143 of the wired pressure sensor can be built into the tube wall 120, and the proximal end extends outside the body and is connected to a data reading device. After the catheter 100 crosses the valve, at least two pressure measuring holes 140 are located on both sides of the aortic valve to monitor the pressure difference before and after the valve.

[0088] Key References Fig.13 The wireless pressure sensor 142 can be placed on the surface of the catheter 100, and the guiding system 1000 also includes a data reading device that wirelessly communicates with the pressure sensor 142. After the catheter 100 crosses the valve, at least two pressure sensors 142 are respectively located on both sides of the aortic valve to monitor the pressure difference before and after the valve. In the figure, the pressure sensor 142 is embedded on the outer surface of the catheter 100, and of course it can also be embedded on the inner surface of the catheter 100.

[0089] See again Figure 3 and 4 When the catheter 100 passes through the aortic arch, it is in a bent state and has a relative inner side 101 and outer side 102. When the traction member 300 acts on the distal end of the catheter 100 to align it with the valve orifice 10, the distal end of the catheter 100 is difficult to obtain support from surrounding tissues. When the guide wire 200 is further pushed distally to cross the valve, the guide wire 200 applies a force toward the outer side 102 to the inside of the catheter 100, which may cause the distal end of the catheter 100 to deviate relative to the valve orifice 10, affecting the success rate of the guide wire 200 in crossing the valve.

[0090] See also Fig.14 In one embodiment, the catheter 100 includes a predetermined curved section 150 and a straight section 160 in sequence from proximal to distal near the distal end.

[0091] The traction member 300 extends to the distal end of the catheter 100 through the outer side of the bending section 150 . When the bending is adjusted, the curvature of the bending section 150 increases.

[0092] The angle α of the bending section 150 is as follows: Fig.14 and Fig.15 As shown, it is the angle formed by the intersection of two perpendicular lines perpendicular to the proximal end and the distal end of the bending section 150. In the pre-setting state, the angle α ranges from 45 to 120 degrees, for example Fig.15 The angle α shown is in the range of greater than 90 to 120 degrees, preferably, for example Fig.15 The angle α shown is in the range of 60 to 90 degrees. The length of the bent section 150 along its own extension direction is 20 to 40 mm, and the length of the straight section 160 is 20 to 60 mm.

[0093] When the catheter 100 is delivered to the adjacent valve orifice 10, in the correct posture, the outer side 102 of the bent section 150 abuts against the inner wall of the aorta. From the perspective of the figure, the left side of the bent section 150 abuts against the inner wall of the aorta, while the straight section 160 is offset to the right side of the valve orifice 10 (as shown by the solid line in the figure).

[0094] When the bend is adjusted, the distal end of the catheter 100 gradually moves to the left to align with the valve orifice 10 (as shown by the dotted line in the figure), and the outer side 102 of the bent section 150 always remains against the inner wall of the aorta, so that when the guide wire 200 is pushed to the distal end to cross the valve, the direction of the straight section 160 remains stable.

[0095] In order to pre-position the catheter 100 in the "correct posture" during operation, a first imaging marker 151 is arranged at the distal end of the catheter 100, and a second imaging marker 152 is arranged at the midpoint of the bending section 150 or at the connection position with the straight section 160. During the operation, imaging equipment is used to observe and adjust the posture of the catheter 100.

[0096] In addition, the signals of the two pressure sensors 142 can be used to assist in determining the current posture in combination with the aforementioned embodiment. For example, the two pressure sensors 142 are respectively a distal pressure sensor and a proximal pressure sensor, and the two pressure sensors are arranged relative to each other in the circumferential direction, that is, the distal pressure sensor and the proximal pressure sensor are arranged at 180 degrees along the circumference of the catheter 100. Along the axial direction of the catheter, the distal pressure sensor is located at the distal end of the straight section 160, and the proximal pressure sensor is located at the midpoint of the bent section 150 or the connection position between the bent section 150 and the straight section 160. Relative to the bent section 150, the distal pressure sensor is located at the inner side 101, and the proximal pressure sensor is located at the outer side 102.

[0097] When the catheter 100 is in the correct posture, the outer side of the midpoint of the bending section 150 abuts against the inner wall of the aorta, so that the fluid pressure collected by the proximal pressure sensor is low or even zero, while the distal pressure sensor corresponds to a larger fluid pressure. Otherwise, the proximal end of the guiding system can be twisted as a whole until the catheter 100 is in the correct posture.

[0098] The guidance system of the present application is first delivered to a preset position in the body by a catheter, and then the distal end of the catheter is driven by a control handle, wherein the direction of the maximum fluid pressure at the aortic root is aligned with the aortic valve orifice, and finally the guide wire is delivered along the channel established by the catheter and crosses the aortic valve, thereby improving the success rate of catheter or guide wire crossing the valve.

[0099] In this embodiment, the distal end of the catheter can be designed as a structure that radially contracts from the proximal end to the distal end, which can help the catheter to pass through the body and be optimized in combination with the anatomical characteristics of the human body, thereby reducing damage to the blood vessel wall and difficulty in operation. For example, the catheter can be made smoother during delivery by adding flexible materials or adopting a smoother design.

[0100] The metal ring of this embodiment can be made of higher strength materials, which can further improve the stability and durability of the system. A detachable connector can also be used to facilitate replacement or repair when necessary. In addition, it is also possible to consider providing an anti-slip texture on the metal ring to increase the friction between the traction member and the metal ring, thereby improving the fixing effect.

[0101] The transmission method in the drive member and the transmission seat of this embodiment can be set to gear transmission, hydraulic transmission, etc., so as to improve the operating torque and response speed of the handle. At the same time, a more humanized control handle appearance and holding method can be designed to reduce the operator's fatigue and operation difficulty.

[0102] An intelligent locking mechanism may also be provided in the driving member of the present embodiment, such as an automatic locking function based on sensor feedback. After the catheter reaches a predetermined position, the system can automatically lock the position of the traction member to avoid risks caused by misoperation. In addition, an emergency unlocking function may also be designed to cope with emergencies.

[0103] The pressure sensor of this embodiment can be set to multiple ones to facilitate all-round and multi-dimensional pressure monitoring. In addition, wireless communication technology can be introduced on the pressure sensor to transmit data to external equipment for analysis and processing, thereby further improving the measurement accuracy.

[0104] The length ratio and curvature variation range of the bent section and the straight section of this embodiment can be further tested. For example, finite element analysis (FEA) can be used to simulate the stress distribution of the catheter under different design schemes, and the optimal scheme can be selected for experimental verification. In addition, it is also possible to consider introducing an adaptive adjustment mechanism to enable the catheter to automatically adjust the bending angle and length at different operation stages, so as to further improve the accuracy and stability of alignment with the aortic valve orifice.

[0105] like Fig.10 As shown, the control end of the traction member in this embodiment can move independently at the control handle, or the two can move synchronously in opposite directions.

[0106] In this embodiment, the distal end of the straight section has a first development mark, wherein the midpoint of the bent section or the connecting position between the bent section and the straight section may have a second development mark.

[0107] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware that any structural changes made under the enlightenment of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. The technology, shape, and structural parts not described in detail in the present invention are all well-known technologies.

Claims

1. A guide system for aortic valve transvalvular operation, having a proximal end (12) and a distal end (11) opposite to each other, characterized in that: include: A guide device and a guide wire (200); The guiding device comprises a catheter (100), a connecting channel (110) is provided inside the catheter (100), and a guide channel (121) is provided on a tube wall (120) inside the catheter (100); A traction member (300), wherein one end of the traction member (300) is provided with a working end (310) connected to the distal end (11) of the catheter (100), and the other end of the traction member (300) is provided with a control end (320), and one end of the control end (320) extends toward the proximal end (12) of the catheter (100) through a guide channel (121); A control handle (400), the control handle (400) being connected to the proximal end (12) of the catheter (100) and the control end (320) of the traction member (300) respectively; The guide wire (200) is movably arranged in the connecting channel (110); The distal end (11) of the guide wire (200) is bent by controlling the working end (310) through the control end (320) so that the distal end (11) of the guide wire (200) faces the valve orifice (10).

2. A guiding system for aortic valve transvalvular operation according to claim 1, characterized in that: The number of the traction members (300) is set to be multiple, and the control handle (400) is used to control the movement of the control end (320) of each traction member (300).

3. A guiding system for aortic valve transvalvular operation according to claim 1, characterized in that: A plurality of pressure sensors (142) are installed in the catheter (100). The pressure sensors (142) are fixed in the catheter (100) and are used to detect fluid pressure.

4. A guiding system for aortic valve transvalvular operation according to claim 3, characterized in that: The tube wall (120) is provided with a plurality of pressure measuring holes (140) arranged axially along the conduit (100), a plurality of pressure sensors (142) correspond to the pressure measuring holes (140), and a fluid channel (141) is provided in the tube wall (120) and is respectively connected to the pressure measuring holes (140) and the pressure sensors (142).

5. A guiding system for aortic valve transvalvular operation according to claim 3, characterized in that: The pressure sensor (142) uses wireless communication, and the guidance system also includes a wireless communication data reading device connected to the pressure sensor (142).

6. A guiding system for aortic valve transvalvular operation according to claim 1, characterized in that: The catheter (100) includes a predetermined bending section (150) and a straight section (160) in sequence from near to far in the vicinity of the distal end (11); the traction member (300) extends from the outside of the bending section (150) to the distal end (11) of the catheter (100); when the bending is adjusted, the curvature of the bending section (150) increases.

7. A guiding system for aortic valve transvalvular operation according to claim 6, characterized in that: In the pre-formed state, the angle α of the bent section (150) ranges from 45 to 120 degrees, the length of the bent section (150) along its own extension direction is 20 to 40 mm, and the length of the straight section (160) is 20 to 60 mm.

8. A guiding system for aortic valve transvalvular operation according to claim 6, characterized in that: The distal end of the straight section (160) is provided with a first display mark (151), and the connection position between the midpoint of the bent section (150) and the straight section (160) is provided with a second display mark (152).

9. A guiding system for aortic valve transvalvular operation according to claim 6, characterized in that: The invention comprises a pressure sensor (142) for detecting fluid pressure, wherein two pressure sensors (142) are arranged along the axial direction of the catheter (100), and the pressure sensors (142) include: A distal pressure sensor, disposed at the distal end of the straight section (160); The proximal pressure sensor is arranged at the midpoint of the bending section (150).

10. A guiding system for aortic valve transvalvular operation according to claim 9, characterized in that: The distal pressure sensor and the proximal pressure sensor are arranged relatively along the circumference of the catheter (100), and the catheter (100) is provided with a relative inner side and outer side. The distal pressure sensor (142) is installed on the inner side of the catheter (100), and the proximal pressure sensor (142) is installed on the outer side of the catheter (100).

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