Laser-driven interventional catheter and interventional assembly

Abstract

The utility model discloses a laser-driven interventional catheter and interventional assembly, and the interventional catheter comprises a tube body which is provided with a far end and a near end which are opposite to each other; the working bag is located at the far end of the tube body, and the interior of the working bag is a liquid cavity capable of being filled with or discharging liquid; the near end of the laser optical fiber is a signal input end, and the far end of the laser optical fiber extends into the liquid cavity and has an excitation state acting on the liquid under a second driving signal. According to the laser-driven interventional catheter, acting force is directly applied to the far end of the guide wire, so that the guide wire rapidly shakes, and the guide wire penetrates through holes in an obstacle more easily and passes through the obstacle.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to laser-driven interventional catheters and interventional components. Background Art

[0002] A guidewire is a basic device for establishing a path for interventional devices within a blood vessel, assisting interventional devices in crossing tortuosity, calcification, and stenosis to reach the target site. When the guidewire travels within the blood vessel, it will encounter obstacles (such as plaques). Simply relying on the strength of the guidewire itself to forcibly pass through the obstacle is extremely difficult in some cases. The usual practice is to apply force to the proximal guidewire located outside the body and transmit it to the distal end of the guidewire. After the distal end of the guidewire is adjusted, it passes through the pores or weak parts on the obstacle. However, this adjustment process requires the force to be transmitted from the proximal end of the guidewire to the distal end of the guidewire, and the controllability of the distal end position adjustment of the guidewire is extremely poor. Utility Model Content

[0003] Based on this, a laser-driven interventional catheter is provided, which directly applies force to the distal end of the guidewire to adjust the position, making it easier for the guidewire to pass through obstacles in the blood vessels.

[0004] A laser-driven interventional catheter comprising:

[0005] a tubular body having opposed distal and proximal ends;

[0006] A working bag is located at the distal end of the tube body, and the interior of the working bag is a liquid cavity capable of being filled with or discharged of liquid;

[0007] The laser optical fiber has a proximal end as a signal input end and a distal end extending into the liquid cavity and having an excited state acting on the liquid under a second driving signal.

[0008] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution. They are merely further supplements or optimizations. Under the premise that there are no technical or logical contradictions, each optional method can be combined separately for the above-mentioned overall solution, or multiple optional methods can be combined.

[0009] Optionally, the liquid chamber is annular as a whole and is arranged around the outer circumference of the tube body.

[0010] Optionally, the axial length of the liquid cavity is 3 to 15 mm.

[0011] Optionally, a recessed area extending in the axial direction is provided on the outer periphery of the tube body, and the laser optical fiber extends along the recessed area.

[0012] Optionally, there are at least two recessed areas, one of which is provided with a liquid supply pipe communicating with the liquid cavity.

[0013] Optionally, a coating is provided on the outer periphery of the tube body, and the coating covers and fixes the laser optical fiber and the liquid supply tube to the outer periphery of the tube body.

[0014] Optionally, the liquid cavity extends axially to the farthest end of the tube body, the axial length of the liquid cavity is L, and the distance between the far end of the laser optical fiber and the far end of the liquid cavity is 0.1 to 0.9L.

[0015] Optionally, the distal end of the tube body has a reduced diameter portion, and the working bag is located in a peripheral area of the reduced diameter portion. After being filled with liquid, the working bag has an outer peripheral surface that is highly flush with an adjacent portion of the tube body.

[0016] Optionally, there are multiple laser optical fibers, each of which independently receives the second driving signal.

[0017] The present application also provides a laser-driven interventional component, comprising:

[0018] The laser-driven interventional catheter;

[0019] A guide wire is movably arranged in the interventional catheter, and the distal end of the guide wire is a working portion extending out of the interventional catheter, and the working portion moves accordingly under the excitation state of the laser optical fiber.

[0020] The laser-driven interventional catheter provided in the present application directly applies force to the distal end of the guidewire, causing it to vibrate rapidly, making it easier for the guidewire to pass through the pores in the obstacle and pass through the obstacle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the interventional catheter for this application;

[0022] Figure 2a A schematic diagram of the distal end of the interventional catheter for this application (with electrode pairs installed);

[0023] Figure 2b A schematic diagram of one arrangement of electrode pairs in the interventional catheter of the present application;

[0024] Figure 2c A schematic diagram of one arrangement of electrode pairs in the interventional catheter of the present application;

[0025] Figure 2d A schematic diagram of one arrangement of the liquid supply pipe in this application;

[0026] Figure 2e A schematic diagram of one arrangement of the liquid supply pipe in this application;

[0027] Figure 2f A schematic diagram of one arrangement of the liquid supply pipe in this application;

[0028] Figure 2g A schematic diagram of one arrangement of the liquid supply pipe in this application;

[0029] Figure 3a Schematic diagram of the distal end of the interventional catheter in this application (with laser fiber);

[0030] Figure 3b Schematic diagram of the distal end of the interventional catheter in this application (with laser fiber);

[0031] Figure 3c A schematic cross-sectional view of the distal end of the interventional catheter in this application;

[0032] Figure 3d A side view of the distal end of the interventional catheter in this application;

[0033] Figure 3e Schematic diagram of the position of the laser fiber of the interventional catheter in this application;

[0034] Figure 3f Schematic diagram of the position of the laser fiber of the interventional catheter in this application;

[0035] Figure 4 A schematic diagram of the interventional device of this application;

[0036] Figure 5 A schematic diagram of the thrombectomy system for this application;

[0037] Figure 6 A schematic diagram of the thrombectomy system for this application;

[0038] Figure 7 A flowchart of the method for establishing a pathway during interventional procedures for this application;

[0039] Figure 8 The present invention provides a flowchart of the intervention operation method of this application.

[0040] In the figure: 100, interventional catheter; 110, tube body; 111, distal end face; 112, recessed area; 113, coating; 120, working bag; 130, electrode pair; 131, positive electrode; 132, negative electrode; 140, liquid cavity; 141, liquid supply tube; 150, laser fiber; 170, handle; 171, guidewire channel; 172, channel; 173, fluid channel; 200, guidewire; 210, working part. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] In order to better describe and illustrate the embodiments of the present application, reference may be made to one or more drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of the invention of the present application, any of the currently described embodiments or preferred methods.

[0043] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be an intermediate component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be an intermediate component.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0045] See also Figure 1 、 Figure 2a 、 Figure 2b As shown, the interventional catheter 100 comprises:

[0046] a tubular body 110 having opposite distal and proximal ends;

[0047] The working capsule 120 is located at the distal end of the tube body 110 . The interior of the working capsule 120 is a liquid cavity 140 that can be filled with or discharged from the liquid.

[0048] The electrode pair 130 is arranged at the distal end of the tube body 110 and is located in the liquid cavity 140. The electrode pair 130 includes a positive electrode 131 and a negative electrode 132 that cooperate with each other. The positive electrode 131 and the negative electrode 132 are arranged at intervals along the radial direction of the interventional catheter 100 and have a discharge state acting on the liquid under a first driving signal.

[0049] In the present application, the electrode pair 130 is located in the liquid cavity 140 at the distal end of the tube body 110. The electrode pair 130 discharges under a first drive signal and acts on the liquid. The liquid is agitated under the action of the discharge signal, and the agitation drives the distal end of the tube body 110 to vibrate. The vibration is further transmitted to the guide wire 200 inside the tube body 110, causing the guide wire 200 to vibrate. When the guide wire 200 encounters an obstacle (such as a thrombus) on the inner wall of the blood vessel, it will block the advancement of the guide wire 200. It is very difficult to adjust the position of the guide wire 200 by applying a force to the proximal end so that it can pass through the obstacle. In the present application, by causing the guide wire 200 to vibrate rapidly, it can quickly adjust its position when encountering an obstacle, making it easier to pass through the pores in the obstacle, so that the guide wire 200 can pass through the obstacle more flexibly.

[0050] See also Figure 1 、 2a As shown, the present application also provides an intervention component, including:

[0051] The present application interventional catheter 100;

[0052] The guide wire 200 is movably disposed in the interventional catheter 100 . The distal end of the guide wire 200 is a working portion 210 extending out of the interventional catheter 100 . The working portion 210 moves accordingly when the electrode pair 130 is in a discharge state.

[0053] The guidewire 200 adopts a CTO guidewire, which is inserted into the interventional catheter 100. The distal end of the guidewire 200 is the working part 210. When the electrode pair 130 discharges under the first driving signal and acts on the liquid, the liquid is agitated under the action of the discharge signal, and the agitation drives the distal end of the tube body 110 to vibrate rapidly. When the distal end of the tube body 110 vibrates, the action part of the guidewire 200 is driven to vibrate, so that the working part 210 can quickly adjust its position and pass through the gap in the obstacle.

[0054] See also Figure 2b 、 Figure 2c As shown, the tube wall of the tube body 110 has opposite inner and outer sides, and the positive electrode 131 and the negative electrode 132 are located at corresponding positions in the circumferential direction of the tube body 110 , with one side being located at the inner side and the other at the outer side.

[0055] The positive electrode 131 and the negative electrode 132 of the electrode pair 130 are respectively located at corresponding positions in the circumferential direction of the tube body 110. When the positive electrode 131 is on the inner side, the negative electrode 132 is on the outer side; when the positive electrode 131 is on the outer side, the negative electrode 132 is on the inner side.

[0056] Since the positive electrode 131 and the negative electrode 132 are located on the tube wall of the tube body 110 and are positioned correspondingly in the circumferential direction of the tube body 110, when the electrode pair 130 discharges under the first driving signal, it is more likely to cause the tube body 110 to move in its cross section rather than along its axial direction. Of course, when the tube body 110 shakes, it is more likely to have motion components in all directions, but by using the arrangement of the electrode pair 130 of the present application, it can be expected that the motion component in the cross section will be larger.

[0057] See also Figure 2a As shown, the electrode pair 130 is located at the distal end surface 111 of the tube body 110, and each electrode receives a first drive signal via a corresponding wire. The wires are omitted in the figure. The electrode pair 130 is located at the distal end surface 111 of the tube body 110. When the electrode pair 130 moves, it directly drives the distal end of the tube body 110 to vibrate.

[0058] See also Figure 2a As shown, the interventional catheter 100 is further provided with a liquid supply tube 141 connected to the liquid cavity 140 and extending further toward the proximal end along the tube body 110. The liquid supply tube 141 is used to inject liquid into the liquid cavity 140 to provide an object for the electrode pair 130 to discharge.

[0059] See also Figure 2d 、 Figure 2e 、 Figure 2f 、 Figure 2g As shown, the liquid supply pipe 141 is independently configured or provided through the cavity in the tube wall, and the extension part of the liquid supply pipe 141 is selected from the tube wall interlayer (see Figure 2f 、 Figure 2g shown), the inner side of the tube wall (see Figure 2d shown), the outside of the tube wall (see Figure 2e See Figure 2f 、 Figure 2g As shown, there may be multiple liquid supply pipes 141, for example Figure 2f As shown, the liquid supply pipe 141 is two distributed in the tube wall interlayer, or as shown in FIG. Figure 2g As shown, there are three liquid supply pipes 141 distributed in the interlayer of the pipe wall.

[0060] See also Figure 2a As shown, the liquid chamber 140 is annular in shape as a whole and is arranged around the outer circumference of the tube body 110 . Figure 2a In the figure, the wavy line is used to indicate the liquid filled in the liquid chamber 140.

[0061] The wire extends along the tube wall, and the extension position is selected from at least one of the tube wall interlayer, the tube wall inner side, and the tube wall outer side. The tube wall interlayer, the tube wall inner side, and the tube wall outer side refer to the positions shown in the liquid supply tube 141.

[0062] There are 2 to 4 pairs of electrode pairs 130, and the electrode pairs 130 are spaced apart along the circumference of the tube body 110. Figure 2b As shown, there are two pairs of electrode pairs 130, see Figure 2c As shown, there are four pairs of electrode pairs 130 , and the electrode pairs 130 are evenly spaced along the circumference of the tube body 110 .

[0063] When the electrode pair 130 is in the discharge state, it acts on the liquid in the working capsule 120, generating bubbles on the surface of the discharge electrode pair 130, thereby affecting the agitation effect on the liquid when the electrode pair 130 discharges next time. In order to solve this problem, multiple electrode pairs 130 can be set. When one of the electrode pairs 130 has completed the discharge, the bubbles generated on its surface can be eliminated by the discharge effect of other electrode pairs 130 on the liquid. For example, when there are two electrode pairs 130, A and B respectively, when A is in the discharge state, bubbles will be attached to its surface. When A is in the non-discharge state and B is in the discharge state, the discharge of B on the liquid can eliminate the bubbles on the surface of A.

[0064] See also Figure 2b 、 Figure 2c As shown, in all electrode pairs 130, the electrodes on the same side of the pipe wall have the same polarity. The same side of the pipe wall here means that they are both on the inner side of the pipe wall or on the outer side of the pipe wall. Figure 2b As shown, the positive electrode 131 is located inside the tube wall, and the negative electrode 132 is located outside the tube wall, or see Figure 2c As shown, the positive electrodes 131 are all located outside the tube wall, and the negative electrodes 132 are all located inside the tube wall.

[0065] See also Figure 2a As shown, the electrode pairs 130 are arranged at at least two positions in the axial direction of the tube body 110, and the distance between two adjacent electrode pairs 130 (i.e. Figure 2a The distribution of the electrode pairs 130 at each axial position is shown in FIG. Figure 2b or Figure 2c See Figure 2b As shown, the thickness of each electrode (i.e. Figure 2b The thickness of each electrode refers to the dimension in the radial direction of the tube body 110. Due to the wall thickness of the tube body 110, the thickness of the electrode also needs to be thin.

[0066] The voltage of the first driving signal is 1000-5000V, the driving frequency is 1-5Hz, and the driving duration of each time is 0.1-0.5 microseconds.

[0067] Optionally, the tube body 110 is made of a polymer material such as nylon, PEBAX, PI (polyimide), or a composite tube containing a woven or cut mesh of stainless steel, nickel titanium, fiber, etc.

[0068] See also Figure 1 The interventional catheter 100 further includes a handle 170 , which is provided with a guidewire 200 channel 171 , a fluid channel 173 for injecting liquid into the working balloon 120 , and a channel 172 for accommodating a guidewire.

[0069] See also Figure 3a As shown, the interventional catheter 100 comprises:

[0070] a tubular body 110 having opposite distal and proximal ends;

[0071] The working capsule 120 is located at the distal end of the tube body 110 . The interior of the working capsule 120 is a liquid cavity 140 that can be filled with or discharged from the liquid.

[0072] The laser fiber 150 has a proximal end as a signal input end and a distal end extending into the liquid chamber 140 and having an excited state acting on the liquid under a second driving signal.

[0073] In the present application, the distal end of the laser fiber 150 extends into the liquid cavity 140. The laser fiber 150 emits a laser under the second driving signal to act on the liquid. The liquid is agitated under the action of the laser signal, and the agitation drives the distal end of the tube body 110 to vibrate. The vibration is further transmitted to the guide wire 200 inside the tube body 110, causing the guide wire 200 to vibrate. When the guide wire 200 encounters an obstacle (such as a thrombus) on the inner wall of the blood vessel, it will block the advancement of the guide wire 200. It is very difficult to adjust the position of the guide wire 200 by applying a force to the proximal end so that it can pass through the obstacle. In the present application, by causing the guide wire 200 to vibrate rapidly, it can quickly adjust its position when encountering an obstacle, making it easier to pass through the pores in the obstacle, so that the guide wire 200 can pass through the obstacle more flexibly.

[0074] See also Figure 3a As shown, the intervention components include:

[0075] The present application interventional catheter 100;

[0076] The guide wire 200 is movably arranged in the interventional catheter 100 . The distal end of the guide wire 200 is a working portion 210 extending out of the interventional catheter 100 . The working portion 210 moves accordingly when the laser fiber 150 is excited.

[0077] The guidewire 200 uses a CTO guidewire 200, which is inserted into the interventional catheter 100. The distal end of the guidewire 200 is the working part 210. When the laser optical fiber 150 is in an excited state under the second driving signal and acts on the liquid, the liquid is agitated under the action of the discharge signal, and the agitation drives the distal end of the tube body 110 to vibrate rapidly. When the distal end of the tube body 110 vibrates, the action part of the guidewire 200 is driven to vibrate, so that the working part 210 can quickly adjust its position and pass through the gap in the obstacle.

[0078] See also Figure 3a 、 Figure 3b As shown, the liquid chamber 140 is annular in shape as a whole and is arranged around the outer circumference of the tube body 110. Figure 3c As shown, the ring width (i.e. Figure 3c W) is 0.4~1.5mm, and the ring width = outer circle radius - inner circle radius, see Figure 3c 、 Figure 3d As shown, in this application, the width of the ring is the difference between the radius R1 corresponding to the outer periphery of the liquid cavity 140 and the outer diameter R2 of the tube body 110. Figure 3a 、 Figure 3d As shown, the liquid chamber 140 extends axially to the most distal end of the tube body 110. The axial length of the liquid chamber 140 (see Figure 3d The distance between the distal end of the laser fiber 150 and the distal end of the liquid chamber 140 is 0.1 to 0.9 L. The axial length of the liquid chamber 140 (see Figure 3d The description of the liquid cavity 140 in this section is all based on the state in which the liquid cavity 140 is filled with liquid, and this description is also applicable to the solution in which the electrode pair 130 is provided in the tube body 110.

[0079] See also Figure 3e As shown, the outer periphery of the tube body 110 is provided with an axially extending recessed area 112, and the laser fiber 150 extends along the recessed area 112. There are at least two recessed areas 112, one of which is provided with a liquid supply pipe 141 communicating with the liquid chamber 140.

[0080] See also Figure 3f As shown, a coating 113 is provided on the outer periphery of the tube body 110. The coating 113 covers and fixes the laser fiber 150 and the liquid supply tube 141 to the outer periphery of the tube body 110. The coating 113 has a smooth outer peripheral surface.

[0081] See also Figure 3b As shown, the distal end of the tubular body 110 has a reduced diameter portion, and the working capsule 120 is located in the peripheral area of the reduced diameter portion. When filled with liquid, the working capsule 120 has an outer circumferential surface that is highly flush with the adjacent portion of the tubular body 110. The structural description of the working capsule 120 in this section also applies to the solution in which the electrode pair 130 is disposed within the tubular body 110.

[0082] There can be one or more laser fibers 150. When there is only one laser fiber 150, the laser fiber 150 periodically enters an excited state. The laser fiber 150 is in the excited state for 0.2s to 3s and in the non-excited state for 0.5s to 1s.

[0083] When there are multiple laser fibers 150, each receives the second drive signal independently, and all laser fibers 150 alternately enter the excited state. The interval between the alternating laser fibers 150 is 0.5s to 1s, and the time each laser fiber 150 is in the excited state is 0.2 to 3s. For example, there are three laser fibers 150, namely A, B, and C. When A is in the excited state, B and C are in the non-excited state. When B is in the excited state, A and C are in the non-excited state. When C is in the excited state, A and B are in the non-excited state. The state switches every 0.5s to 1s, and each fiber is in the excited state for 0.2 to 3s.

[0084] When the laser fiber 150 is in an excited state, it acts on the liquid in the working capsule 120, generating bubbles on the surface of the exciting fiber, thereby affecting the effect of the laser fiber 150 exciting the liquid next time. Therefore, multiple laser fibers 150 can be set. When one of the laser fibers 150 is excited, the bubbles generated on its surface can be eliminated by the excitation effect of other laser fibers 150 on the liquid. For example, when there are two laser fibers 150, A and B respectively, when A is in an excited state, bubbles will be attached to its surface. When A is in a non-excited state and B is in an excited state, the excitation of the liquid by B can eliminate the bubbles on the surface of A.

[0085] See also Figure 1 The interventional catheter 100 further includes a handle 170 , which is provided with a guidewire 200 channel 171 , a fluid channel 173 for injecting liquid into the working capsule 120 , and a channel 172 for accommodating the laser optical fiber 150 .

[0086] See also Figure 4 As shown, the present application also provides an interventional device, comprising:

[0087] This application intervenes in the component;

[0088] The driver transmits a driving signal to the intervention component.

[0089] The driving signal is one of a first driving signal and a second driving signal.

[0090] See also Figure 5 As shown, the present application also provides a thrombus removal system, comprising:

[0091] This application intervenes in the component;

[0092] A driver, which delivers a driving signal to the intervention component;

[0093] A thrombectomy assembly includes a microcatheter and a thrombectomy stent delivered and retrieved through the microcatheter.

[0094] See also Figure 6 As shown, the thrombectomy system further includes:

[0095] The repair component is a light-emitting component and can output therapeutic light with a wavelength range of 400 to 1200nm.

[0096] The light-emitting component emits a first light beam with a wavelength range of 400 to 1200 nm. Light within this wavelength range has the effect of repairing vascular endothelium and soothing smooth muscle. The wavelength of the therapeutic light affects the therapeutic effect, and preferably, wavelengths of 635 nm, 650 nm, or 808 nm are used.

[0097] See also Figure 7 As shown, the present application also provides a path establishment method during interventional operation, including:

[0098] Deliver the CTO guidewire through the interventional catheter until the distal end of the CTO guidewire reaches the obstruction site;

[0099] By adopting the action mode of electric field, the distal end of the interventional catheter is further driven to pass through the obstacle to complete the establishment of the path.

[0100] See also Figure 8 As shown, the present application also provides an interventional operation method, comprising:

[0101] Establish a path, using the path establishment method used in this application intervention operation;

[0102] Deliver instruments along established pathways and perform corresponding maneuvers.

[0103] The corresponding operation is selected from at least one of releasing therapeutic substances, thrombus removal, and endothelial repair.

[0104] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A laser-driven interventional catheter, characterized in that include: a tubular body having opposed distal and proximal ends; A working bag is located at the distal end of the tube body, and the interior of the working bag is a liquid cavity capable of being filled with or discharged of liquid; The laser optical fiber has a proximal end as a signal input end and a distal end extending into the liquid cavity and having an excited state acting on the liquid under a second driving signal.

2. The laser-driven interventional catheter according to claim 1, characterized in that The liquid chamber is annular as a whole and is arranged around the outer circumference of the tube body.

3. The laser-driven interventional catheter according to claim 1, characterized in that The axial length of the liquid cavity is 3 to 15 mm.

4. The laser-driven interventional catheter according to claim 1, characterized in that The outer periphery of the tube body is provided with a recessed area extending in the axial direction, and the laser optical fiber extends along the recessed area.

5. The laser-driven interventional catheter according to claim 4, characterized in that There are at least two recessed areas, one of which is provided with a liquid supply pipe communicating with the liquid cavity.

6. The laser-driven interventional catheter according to claim 5, characterized in that The outer periphery of the tube body is provided with a coating, and the coating covers and fixes the laser optical fiber and the liquid supply tube to the outer periphery of the tube body.

7. The laser-driven interventional catheter according to claim 1, characterized in that The liquid cavity extends axially to the farthest end of the tube body, the axial length of the liquid cavity is L, and the distance between the far end of the laser optical fiber and the far end of the liquid cavity is 0.1 to 0.9L.

8. The laser-driven interventional catheter according to claim 1, characterized in that The distal end of the tube body has a reduced diameter portion, and the working bag is located in the peripheral area of the reduced diameter portion. After being filled with liquid, the working bag has an outer peripheral surface that is highly flush with the adjacent portion of the tube body.

9. The laser-driven interventional catheter according to claim 1, characterized in that There are multiple laser optical fibers, each of which independently receives the second driving signal.

10. A laser-driven interventional assembly, characterized in that include: The laser-driven interventional catheter according to any one of claims 1 to 9; A guide wire is movably arranged in the interventional catheter, and the distal end of the guide wire is a working portion extending out of the interventional catheter, and the working portion moves accordingly under the excitation state of the laser optical fiber.

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