Positionable catheter device

Abstract

The application discloses a positionable catheter device, comprising: a tube body having opposite distal and proximal ends; the light-emitting component is arranged in the tube body, is provided with a working part extending out of the far end of the tube body and can output treatment light with the wavelength range of 400-1200 nm; the positioning piece is of a radial deformable structure, and the positioning piece is connected to the light-emitting component or connected with a movable piece which is located in the tube body and can slide relative to the tube body; the positioning piece has the following opposite states: a loading state, which can be accommodated in the tube body so as to be suitable for interventional delivery; and in the expanded state, the support is exposed out of the tube body to support peripheral tissues. And through the arrangement of the positioning piece, the light-emitting part is centered, more uniform treatment light is applied to the blood vessel wall, the repairing effect is better, and the thrombectomy process is more facilitated.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a positionable catheter device. Background Art

[0002] When treating vascular stenosis, using a thrombectomy stent to remove thrombus or using a balloon dilation method to dilate blood vessels will cause damage to the blood vessel wall. The blood vessel wall may also suffer endothelial damage due to other reasons. After the blood vessel wall is damaged, stenosis is likely to occur. Even if stenosis does not occur, the damage to the blood vessel wall needs to be repaired in a timely manner. When using a thrombectomy stent to remove thrombus, the blood vessel wall is prone to being stimulated and contracting, especially at the damaged part of the blood vessel wall, and the contraction of the blood vessel wall is more unfavorable for the thrombus removal process. Utility Model Content

[0003] Based on this, this application provides a positionable catheter device. By adding a positioning member to the catheter device, the light of the light-emitting component in the catheter device can be applied to the blood vessel wall more evenly, having a better repair effect. At the same time, when using a thrombectomy stent to remove thrombus, the light emitted by the light-emitting component can also have a soothing effect on the blood vessel wall, which is beneficial to the thrombus removal process.

[0004] A positionable catheter device includes:

[0005] A tube body having opposite distal and proximal ends;

[0006] A light-emitting component disposed in the tube body, having a working portion extending out of the distal end of the tube body and capable of outputting therapeutic light with a wavelength range of 400-1200 nm;

[0007] A positioning member, the positioning member adopting a radially deformable structure, the positioning member being connected to the light-emitting component or the positioning member being connected to a movable member disposed in the tube body and capable of sliding relative to the tube body; the positioning member has opposite:

[0008] A loading state, capable of being received in the tube body to be suitable for interventional delivery;

[0009] An expanded state, being exposed outside the tube body to support surrounding tissues.

[0010] The following also provides several optional ways, which are not additional limitations to the above overall solution, but are only further supplements or preferences. Without technical or logical contradictions, each optional way can be combined with the above overall solution alone, or multiple optional ways can be combined with each other.

[0011] Optionally, the inner diameter of the blood vessel to be repaired is D1, the outer diameter of the positioning member in the expanded state is D2 and is less than D1, and D2 is 0.5-0.85 times of D1.

[0012] Optionally, when the positioning member is in the expanded state, the working portion is located within the positioning member and is radially centered.

[0013] Optionally, in the loaded state, the positioning member gathers and abuts against the outer periphery of the working portion, and in the expanded state, the positioning member expands further radially outwards.

[0014] Optionally, the positioning member is made of a memory material and is driven into the expanded state in a self-expanding manner. The positioning member is in a cage structure in the expanded state, or the positioning member is a fiber bundle, and the light-emitting component or the movable component is located at the core of the fiber bundle.

[0015] Optionally, the positioning member has opposite proximal and distal ends. One of the proximal and distal ends of the positioning member is fixedly connected to the light-emitting component or the movable component, and the other is movably engaged with the light-emitting component or the movable component. In the expanded state, the proximal and distal ends of the positioning member approach each other, causing at least a part of the positioning member to move radially away from the light-emitting component or the movable component.

[0016] Optionally, a first support sleeve is fixed on the light-emitting component or the movable component. One end of the positioning member is fixed to the first support sleeve, and the other end is slidably engaged with the light-emitting component or the movable component.

[0017] Optionally, a second support sleeve is movably installed on the light-emitting component or the movable component and is located on the distal side of the working portion. The distal end of the positioning member is fixed to the second support sleeve. When the positioning member switches from the loaded state to the expanded state, the second support sleeve slides closer to the first support sleeve.

[0018] Optionally, a bushing is fixedly installed on the light-emitting component or the movable component and is located on the distal side of the working portion. The second support sleeve is slidably installed outside the bushing.

[0019] Optionally, the positioning member includes:

[0020] A positioning portion that is arranged around the light-emitting component or the movable component in the expanded state and is radially spaced from the light-emitting component or the movable component;

[0021] A connecting portion that is connected between the positioning portion and the light-emitting component or the movable component to maintain the radial spacing between the positioning portion and the light-emitting component or the movable component.

[0022] The positionable catheter device provided in the present application adds a positioning member to the catheter device, enabling the light of the light-emitting component in the catheter device to be applied to the blood vessel wall more evenly, having a better repair effect. When using a thrombectomy stent for thrombectomy, the light emitted by the light-emitting component can cause the blood vessel wall to dilate and avoid contraction, which is more conducive to the thrombectomy process. At the same time, when the catheter device is withdrawn, the positioning member can play a role in cleaning thrombus. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic view of the positionable catheter device of the present application;

[0024] Figure 2 is Figure 1 a cross-sectional view taken along line A-A in

[0025] Figure 3 is a schematic view of the positioning member of the positionable catheter device of the present application in an expanded state (the positioning member is connected to the movable member);

[0026] Figure 4a is a schematic view of the positioning member of the positionable catheter device of the present application in a loaded state;

[0027] Figure 4b is a schematic view of the positioning member of the positionable catheter device of the present application in an expanded state;

[0028] Figure 4c is a schematic view of the positioning member of the positionable catheter device of the present application in an expanded state (with a bushing provided);

[0029] Figure 4d is a schematic view of the positioning member of the positionable catheter device of the present application in an expanded state (with an intermediate sleeve provided);

[0030] Figure 4e is a schematic view of the positioning member of the positionable catheter device of the present application in an expanded state (with a towing cable provided);

[0031] Figure 4f is a schematic view of the positioning member of the positionable catheter device of the present application in an expanded state (with a driving member provided);

[0032] Figure 5 is a schematic view of the positioning member of the positionable catheter device of the present application in an expanded state (the positioning member is connected to the light-emitting component);

[0033] Figure 6a is a schematic view of the positioning member of the positionable catheter device of the present application in a loaded state;

[0034] Figure 6b is a schematic view of the positioning member of the positionable catheter device of the present application in an expanded state;

[0035] Figure 6c is a schematic view of the positioning member of the positionable catheter device of the present application in an expanded state (with a bushing provided);

[0036] Figure 6d is a schematic view of the positioning member of the positionable catheter device of the present application in an expanded state (with an intermediate sleeve provided);

[0037] Figure 6e Schematic diagram of the positioning member in the expandable state in the locatable catheter device of the present application (equipped with a traction cable);

[0038] Figure 6f Schematic diagram of the positioning member in the expandable state in the locatable catheter device of the present application (equipped with a driving member);

[0039] Figure 7a Schematic diagram of the present application using a fiber bundle as the positioning member in the loaded state;

[0040] Figure 7b Schematic diagram of the present application using a fiber bundle as the positioning member in the expanded state;

[0041] Figure 7c Top view of the present application using a fiber bundle as the positioning member in the expanded state;

[0042] Figure 8 Schematic diagram of the vascular endothelial injury repair system using the catheter device of the present application;

[0043] Figure 9 Schematic diagram of the vascular thrombectomy system of the present application;

[0044] Figure 10 Flow chart of the method for repairing vascular endothelial injury based on the catheter device of the present application;

[0045] Figure 11 Flow chart of the method for repairing vascular endothelial injury based on the catheter device of the present application;

[0046] Figure 12 Flow chart of the method for repairing vascular endothelial injury based on the catheter device of the present application.

[0047] In the figure: 100, catheter device; 110, tube body; 120, light-emitting component; 121, working part; 130, positioning member; 131, first support sleeve; 132, second support sleeve; 133, bushing; 134, intermediate sleeve; 135, spoke; 136, positioning part; 137, connecting part; 138, traction cable; 139, driving member; 140, movable part; 150, handle part; 160, light-emitting component channel; 170, guide wire channel; 200, blood vessel. Detailed implementation manners

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are only a part rather than all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0049] To better describe and illustrate the embodiments of the present application, one or more accompanying drawings may be referred to, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the inventions of the present application, the currently described embodiments, or the preferred modes.

[0050] It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0052] See Figure 1 、 Figure 3 、 Figure 5 As shown in

[0053] a catheter device 100 for repairing vascular endothelial injury, comprising:

[0054] a tube body 110 having opposite distal and proximal ends;

[0055] a light-emitting component 120 disposed in the tube body 110, having a working portion 121 extending out of the distal end of the tube body 110 and capable of outputting therapeutic light with a wavelength range of 400-1200 nm;

[0056] a positioning member 130, the positioning member 130 adopting a radially deformable structure, the positioning member 130 being connected to the light-emitting component 120 or the positioning member 130 being connected to a movable member 140 disposed in the tube body 110 and capable of sliding relative to the tube body 110;

[0057] a loading state, capable of being received in the tube body 110 to be suitable for interventional delivery;

[0058] an expanded state, being exposed outside the tube body 110 to support the surrounding tissue.

[0059] ​The catheter device 100 of the present application is provided with a light emitting component 120 and a positioning member 130, and two configurations of the light emitting component 120 and the positioning member 130 are provided. One configuration is shown in FIG. Figure 1 、 Figure 2 、 Figure 3 As shown, the light emitting component 120 is fixedly connected to the tube body 110, and a movable member 140 that can slide relative to the tube body 110 is provided in the tube body 110, and the positioning member 130 is connected to the movable member 140. For another arrangement, see Figure 5 As shown, the movable part 140 is no longer provided in the tube body 110 , and the positioning part 130 is directly connected to the light-emitting component 120 .

[0060] The light emitting component 120 emits therapeutic light of 400 to 1200 nm. Light in this wavelength range has the effect of repairing the vascular endothelium and soothing the smooth muscle. When the positioning member 130 is in the loaded state, it is accommodated in the tube body 110. When in the expanded state, the positioning member 130 is exposed outside the tube body 110 and interacts with the surrounding tissue (such as the blood vessel wall). Figure 3 、 Figure 5 As shown, the positioning member 130 supports the surrounding tissue, that is, after the positioning member 130 expands, it contacts the inner wall of the blood vessel to ensure that the thinner tube 110 is located as much as possible in the middle position of the blood vessel, and also enables the light-emitting component 120 to be located as much as possible in the middle position of the blood vessel, applying uniform light to the blood vessel wall to repair vascular endothelial damage.

[0061] See also Figure 1 As shown, the catheter device 100 further includes a handle 150 having a guidewire channel 170 and a light-emitting component channel 160 for passing the light-emitting component.

[0062] The positioning member 130 adopts a radially deformable structure, which means that the positioning member 130 can be retracted or expanded at least in the radial direction. When retracted, it can be accommodated in the tube body 110 for interventional delivery. When expanded, it is exposed to the outside of the tube body 110 and interacts with the surrounding blood vessel wall. Figure 5 In the illustrated embodiment, in the loaded state, the positioning members 130 gather and abut against the outer periphery of the working portion 121 , and in the expanded state, the positioning members 130 further expand outward in the radial direction.

[0063] See also Figure 5 As shown, when the positioning member 130 is in an expanded state, it is located on the periphery of the light-emitting component 120, and the working portion 121 of the light-emitting component 120 is located inside the positioning member 130. The light of the light-emitting component 120 passes through the positioning member 130 and acts on the blood vessel wall, or the working portion 121 of the light-emitting component 120 is located between the positioning member 130 and the tube body 110, and the light emitted by the working portion 121 directly acts on the blood vessel wall.

[0064] See also Figure 3As shown, when the positioning member 130 is in the expanded state, it is not located on the outer periphery of the light-emitting member 120. The light-emitting member 120 is fixed to the tube body 110, and the light emitted by the working portion 121 of the light-emitting member 120 directly acts on the blood vessel wall.

[0065] See Figure 3 、 Figure 5 As shown, the inner diameter of the blood vessel 200 to be repaired is D1, and the outer diameter of the positioning member 130 in the expanded state is D2 and is smaller than D1. The positioning member 130 acts on the blood vessel wall to make the positioning member 130 as close as possible to the middle of the blood vessel 200. The positioning member 130 is located in the middle of the blood vessel 200 to ensure that the working portion 121 of the light-emitting member 120 is as centered as possible in the blood vessel 200, so that the light of the light-emitting member 120 can act on the inner wall of the blood vessel more evenly, and the repair effect on the damage of the inner wall of the blood vessel is more ideal.

[0066] The outer diameter of the positioning member 130 in the expanded state is smaller than the inner diameter of the blood vessel to be repaired to avoid further damage to the blood vessel when the positioning member 130 is in the expanded state. However, the outer diameter of the positioning member 130 in the expanded state cannot be too small, otherwise the purpose of centering the light-emitting member 120 in the blood vessel cannot be achieved. D2 is 0.5 to 0.85 times of D1. Further, D2 is 0.7 to 0.85 times of D1.

[0067] See Figure 3 、 Figure 5 As shown, the light-emitting member 120 is an optical fiber or a Micro LED extending from the proximal end to the distal end. The proximal end of the light-emitting member is an input end for docking the light source. Along the length direction of the light-emitting member, the length of the working portion 121 is 1 mm - 50 mm.

[0068] The light-emitting member 120 can be an optical fiber or a Micro LED. When using an optical fiber, a laser generator needs to be configured. When using a Micro LED, a power supply is required. The power supply can use miniaturized components such as button batteries to make the overall balloon catheter device lightweight.

[0069] See Figure 5 As shown, when the positioning member 130 is in the expanded state, the working portion 121 is located inside the positioning member 130 and is radially centered. See Figure 3 As shown, when the positioning member 130 is in the expanded state, although the working portion 121 is not inside the positioning member 130, since the positioning member 130 is supported in the blood vessel, the working portion 121 of the light-emitting member 120 can be made as close as possible to the position of the blood vessel axis.

[0070] To ensure the uniformity of light illumination, the light-emitting direction of the working portion 121 is in all circumferential directions.

[0071] See Figure 4a 、 Figure 4bAs shown, the positioning member 130 has opposite proximal and distal ends. One of the proximal and distal ends of the positioning member 130 is fixedly connected to the movable member 140, and the other is movably engaged with the movable member 140. In the expanded state, the proximal and distal ends of the positioning member 130 approach each other, causing at least a portion of the positioning member 130 to radially move away from the movable member 140. The proximal end of the positioning member 130 is fixedly connected to the movable member 140, and the distal end of the positioning member 130 is movably engaged with the movable member 140, or the distal end of the positioning member 130 is fixedly connected to the movable member 140, and the proximal end of the positioning member 130 is movably engaged with the movable member 140. Figure 4a In [description], the positioning member 130 is in the loading state. Figure 4b In [description], the positioning member 130 is in the expanded state, and the distal end of the positioning member 130 approaches the proximal end, switching from the loading state to the expanded state.

[0072] See Figure 6a 、 Figure 6b As shown, the positioning member 130 has opposite proximal and distal ends. One of the proximal and distal ends of the positioning member 130 is fixedly connected to the light-emitting component 120, and the other is movably engaged with the light-emitting component 120. In the expanded state, the proximal and distal ends of the positioning member 130 approach each other, causing at least a portion of the positioning member 130 to radially move away from the light-emitting component 120. The proximal end of the positioning member 130 is fixedly connected to the light-emitting component 120, and the distal end of the positioning member 130 is movably engaged with the light-emitting component 120, or the distal end of the positioning member 130 is fixedly connected to the light-emitting component 120, and the proximal end of the positioning member 130 is movably engaged with the light-emitting component 120. Figure 6a In [description], the positioning member 130 is in the loading state. Figure 6b In [description], the positioning member 130 is in the expanded state, and the distal end of the positioning member 130 approaches the proximal end, switching from the loading state to the expanded state.

[0073] The positioning member 130 is made of a memory material, such as nickel-titanium alloy, memory polymer, etc., and is driven into the expanded state by a self-expanding method, that is, it switches from the loading state to the expanded state by a self-expanding method.

[0074] A first support sleeve 131 is fixed on the light-emitting component 120 or the movable member 140. One end of the positioning member 130 is fixed to the first support sleeve 131, and the other end is slidably engaged with the light-emitting component 120 or the movable member 140.

[0075] See Figure 4a 、 Figure 4bAs shown, when the positioning member 130 is fixedly connected to the movable member 140, a first support sleeve 131 is fixed on the movable member 140. One end of the positioning member 130 is fixed to the first support sleeve 131, and the other end is slidable relative to the movable member 140. A second support sleeve 132 is movably mounted on the movable member 140 at the distal side of the working portion 121. The distal end of the positioning member 130 is fixed to the second support sleeve 132. When the positioning member 130 switches from the loaded state to the expanded state, the second support sleeve 132 slides closer to the first support sleeve 131.

[0076] See Figure 4e As shown, the first support sleeve 131 is fixed to the movable member 140, and the second support sleeve 132 is slidably sleeved on the movable member 140. A towing cable 138 extending proximally is connected to the second support sleeve 132, and the towing cable 138 extends through the interior of the tube body 110. The first support sleeve 131 is provided with a through hole for passing through the towing cable 138. There are at least two towing cables 138, which are symmetrically arranged on both sides of the movable member 140. By pulling the second support sleeve 132 towards the first support sleeve 131 with the towing cable 138, the positioning member 130 is switched from the loaded state to the expanded state.

[0077] See Figure 4f As shown, the first support sleeve 131 is slidably sleeved on the movable member 140, and the second support sleeve 132 is fixed to the movable member 140. A driving member 139 extending proximally is connected to the first support sleeve 131, and the driving member 139 extends through the interior of the tube body 110. The driving member 139 is arranged side by side with the movable member 140 in the tube body 110 or sleeved outside the movable member 140. The driving member 139 drives the first support sleeve 131 towards the second support sleeve 132, so that the positioning member 130 is switched from the loaded state to the expanded state.

[0078] See Figure 4c As shown, a bushing 133 is fixedly installed on the movable member 140 at the distal side of the working portion 121, and the second support sleeve 132 is slidably installed outside the bushing 133. By providing the bushing 133, the movable member 140 is prevented from being damaged when the second support member moves. See Figure 4d As shown, one or more intermediate sleeves 134 are movably installed on the movable member 140. The intermediate sleeves 134 are arranged axially in sequence between the first support sleeve 131 and the second support sleeve 132, and the positioning member 130 is also connected to the intermediate sleeves 134. The positioning member 130 is connected to the intermediate sleeves 134 through spokes 135. When the positioning member 130 has a long axial length, the intermediate sleeves 134 provide radial support at multiple points for the positioning member 130 to prevent the positioning member 130 from deforming.

[0079] See Figure 6a and Figure 6bAs shown, when the positioning member 130 is fixedly connected to the light-emitting member 120, a first support sleeve 131 is fixed on the light-emitting member 120. One end of the positioning member 130 is fixed to the first support sleeve 131, and the other end is slidable relative to the light-emitting member 120. A second support sleeve 132 is movably mounted on the light-emitting member 120 on the distal side of the working portion 121. The distal end of the positioning member 130 is fixed to the second support sleeve 132. When the positioning member 130 switches from the loaded state to the expanded state, the second support sleeve 132 slides closer to the first support sleeve 131.

[0080] See Figure 6e As shown, the first support sleeve 131 is fixed to the light-emitting member 120, the second support sleeve 132 is slidably sleeved on the light-emitting member 120, and a traction cable 138 extending proximally is connected to the second support sleeve 132. The traction cable 138 extends inside the tube body 110. The first support sleeve 131 is provided with a through hole for passing through the traction cable 138. There are at least two traction cables 138, symmetrically arranged on both sides of the movable member 140. By pulling the second support sleeve 132 towards the first support sleeve 131 through the traction cable 138, the positioning member 130 is switched from the loaded state to the expanded state.

[0081] See Figure 6f As shown, the first support sleeve 131 is slidably sleeved on the light-emitting member 120, the second support sleeve 132 is fixed to the light-emitting member 120, and a driving member 139 extending proximally is connected to the first support sleeve 131. The driving member 139 extends inside the tube body 110. The driving member 139 is arranged side by side with the light-emitting member 120 inside the tube body 110 or sleeved outside the light-emitting member 120. The driving member 139 drives the first support sleeve 131 towards the second support sleeve 132, so that the positioning member 130 is switched from the loaded state to the expanded state.

[0082] See Figure 6c As shown, a bushing 133 is fixedly mounted on the light-emitting member 120 on the distal side of the working portion 121, and the second support sleeve 132 is slidably mounted outside the bushing 133. By providing the bushing 133, damage to the light-emitting member 120 is prevented when the second support member moves. See Figure 6d As shown, one or more intermediate sleeves 134 are movably mounted on the light-emitting member 120. The intermediate sleeves 134 are arranged axially in sequence between the first support sleeve 131 and the second support sleeve 132, and the positioning member 130 is also connected to each intermediate sleeve 134. The positioning member 130 is connected to the intermediate sleeve 134 through a spoke 135. When the positioning member 130 has a long axial length, the intermediate sleeve 134 provides radial support at multiple points for the positioning member 130 to prevent the positioning member 130 from deforming.

[0083] See Figure 4d As shown, the positioning member 130 includes:

[0084] The positioning part 136 is arranged around the movable part 140 in the expanded state and is arranged at a radial interval from the movable part 140;

[0085] The connecting part 137 is connected between the positioning part 136 and the movable part 140 to maintain the radial interval between the positioning part 136 and the movable part 140. The connecting part 137 has multiple groups, and the axial positions within the same group are the same and are radially distributed.

[0086] See Figure 6d As shown, the positioning member 130 includes:

[0087] The positioning part 136 is arranged around the light-emitting component 120 in the expanded state and is arranged at a radial interval from the light-emitting component 120;

[0088] The connecting part 137 is connected between the positioning part 136 and the light-emitting component 120 to maintain the radial interval between the positioning part 136 and the light-emitting component 120. The connecting part 137 has multiple groups, and the axial positions within the same group are the same and are radially distributed.

[0089] See Figure 7a , Figure 7b , Figure 7c As shown, the positioning member 130 is a fiber bundle, and the light-emitting component 120 or the movable part 140 is located in the core of the fiber bundle;

[0090] A first support sleeve 131 at the relatively proximal end and a second support sleeve 132 at the relatively distal end are provided on the light-emitting component 120 or the movable part 140, and both ends of the fiber bundle are respectively connected to the first support sleeve 131 and the second support sleeve 132;

[0091] When the positioning member 130 is switched from the loaded state (as shown in Figure 7a ) to the expanded state (as shown in Figure 7b ), the first support sleeve 131 and the second support sleeve 132 approach each other, and at least one of the first support sleeve 131 and the second support sleeve 132 is movably fitted with the light-emitting component 120 or the movable part 140 to adapt to the change in distance.

[0092] In addition to playing the positioning role of centering the light-emitting component 120, the fiber bundle can also be used to remove the plug or clean after the plug removal process is completed. The multiple functions of the fiber bundle can be exerted simultaneously or at least one of them can be selectively exerted.

[0093] Figure 7a , Figure 7b , Figure 7c For illustration only, there is no dimensional correspondence among the three, and Figure 7bWhen the first support sleeve 131 and the second support sleeve 132 are close to each other, it mainly shows the folded state of the fiber bundle. Compared with the schematic diagram of this angle in reality, some fiber bundles are omitted.

[0094] Using a fiber bundle as the positioning member 130, the material of the fiber bundle needs to have an appropriate elastic modulus. The material of the fiber bundle is nylon, PTFE, PE or PP. In the fiber bundle, the diameter of each fiber is 5μm - 50μm. When the fiber bundle is in an expanded state, it can bring an effective supporting effect to the blood vessel wall. At the same time, the fiber bundle itself is easy to adjust its state and will not cause damage to the blood vessel wall.

[0095] The fiber bundle is made of a light-transmitting material. The wavelength of red light can bypass the fiber and irradiate onto the inner wall of the blood vessel, that is, the fiber bundle will not effectively block the red light. In the fiber bundle, the number of fibers is 4 - 100. For example, 10 - 60.

[0096] The light-emitting component 120 is an optical fiber or a Micro LED, and the wavelength range of the treatment light is 600 - 850nm. The power of the treatment light is 5mW / cm 2 -100 mW / cm 2 , and the irradiation time is 30s - 600s. The wavelength of the treatment light affects the treatment effect. Preferred options include that the wavelength of the treatment light is 635nm, 650nm or 808nm. The wavelength of the treatment light is not constant during the treatment process. It can be adjusted according to the progress of the treatment. For example, at the beginning of the treatment, a shorter wavelength band can be selected, and in the middle stage of the treatment, a longer wavelength band can be selected.

[0097] Light with a wavelength in the range of 600 - 850nm roughly corresponds to the red light band and the near-infrared band in visible light. Light in this wavelength range has a better effect on repairing the vascular endothelium and soothing smooth muscle. If the power of the treatment light is too low, the repair effect will be unsatisfactory. If the power is too high, it will cause excessive heat and lead to blood vessel burns.

[0098] See Figure 8 As shown, the present application also provides a vascular endothelium injury repair system using a catheter device, including:

[0099] The catheter device of the present application;

[0100] A light source, connected to the light-emitting component in the catheter device through an optical path.

[0101] See Figure 9 As shown, the present application also provides a vascular thrombectomy system, including:

[0102] A microcatheter that can be delivered to the thrombus site via a predetermined path;

[0103] A thrombectomy stent is loaded into a microcatheter for release to the thrombus site and retrieved into the microcatheter.

[0104] The catheter device of the present application is used for repairing vascular endothelial injury after thrombectomy.

[0105] A light source is connected to the light-emitting component in the catheter device through an optical path.

[0106] See Figure 10 As shown, a method for repairing vascular endothelial injury based on the catheter device includes:

[0107] Intervene and deliver the catheter device to a predetermined site, where the catheter device includes a tube body, a positioning member movable relative to the tube body, and a light-emitting component.

[0108] Relative to the tube body, drive the positioning member to extend out of the distal end of the tube body so that the positioning member is in an expanded state, and the working part of the light-emitting component outputs therapeutic light with a wavelength range of 400-1200 nm.

[0109] See Figure 11 As shown, the present application also provides a method for repairing vascular endothelial injury based on the catheter device, including:

[0110] Intervene and deliver the catheter device to a predetermined site, where the catheter device includes a tube body, a light-emitting component movably arranged in the tube body, and a positioning member connected to the light-emitting component.

[0111] Relative to the tube body, drive the light-emitting component to further extend out of the distal end of the tube body so that the positioning member is in an expanded state, and output therapeutic light with a wavelength range of 400-1200 nm at the extended site.

[0112] See Figure 12 As shown, the present application also provides a method for repairing vascular endothelial injury based on the catheter device, including:

[0113] Intervene and deliver the catheter device to a predetermined site, where the catheter device includes a tube body, a light-emitting component fixed to the tube body and having a working part extending out of the distal end of the tube body, and a movable member slidably arranged in the tube body.

[0114] Relative to the tube body, drive the movable member to extend out of the distal end of the tube body so that the positioning member is in an expanded state, and the working part of the light-emitting component outputs therapeutic light with a wavelength range of 400-1200 nm.

[0115] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0116] The above embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A locatable catheter device, characterized in that, Comprising: A tube body having opposite distal and proximal ends; A light-emitting component disposed within the tube body, having a working portion extending out of the distal end of the tube body and capable of outputting therapeutic light with a wavelength range of 400 - 1200 nm; A positioning member, the positioning member adopting a radially deformable structure, the positioning member being connected to the light-emitting component or the positioning member being connected to a movable member that is within the tube body and slidable relative to the tube body; the positioning member having opposite: A loaded state, capable of being received within the tube body for suitable interventional delivery; An expanded state, being exposed outside the tube body to support surrounding tissues.

2. The locatable catheter device according to claim 1, wherein The inner diameter of the blood vessel to be repaired is D1, the outer diameter of the positioning member in the expanded state is D2 and is less than D1, and D2 is 0.5 - 0.85 times of D1.

3. The locatable catheter device according to claim 1, characterized in that, In the expanded state of the positioning member, the working portion is located within the positioning member and is radially centered.

4. The locatable catheter device according to claim 1, wherein In the loaded state, the positioning member gathers and abuts against the outer periphery of the working portion, and in the expanded state, the positioning member expands further radially outwards.

5. The locatable catheter device according to claim 1, wherein The positioning member is made of a memory material and is driven into the expanded state in a self-expanding manner. The positioning member is a cage structure in the expanded state, or the positioning member is a fiber bundle, and the light-emitting component or the movable member is located in the core of the fiber bundle.

6. The locatable catheter device according to claim 1, wherein The positioning member has opposite proximal and distal ends. One of the proximal and distal ends of the positioning member is fixedly connected to the light-emitting component or the movable member, and the other is movably engaged with the light-emitting component or the movable member. In the expanded state, the proximal and distal ends of the positioning member approach each other, causing at least a part of the positioning member to radially move away from the light-emitting component or the movable member.

7. The positionable catheter device according to claim 6, characterized in that, A first support sleeve is fixedly mounted on the light-emitting component or the movable member, one end of the positioning member is fixed to the first support sleeve, and the other end is slidably engaged with the light-emitting component or the movable member.

8. The locatable catheter device according to claim 7, wherein, A second support sleeve is movably mounted on the light-emitting component or the movable member on the distal side of the working portion. The distal end of the positioning member is fixed to the second support sleeve. When the positioning member switches from the loaded state to the expanded state, the second support sleeve slides closer to the first support sleeve.

9. The locatable catheter device according to claim 8, wherein, A bushing is fixedly mounted on the light-emitting component or the movable member on the distal side of the working portion, and the second support sleeve is slidably mounted outside the bushing.

10. The locatable catheter device according to claim 1, characterized in that, The positioning member includes: A positioning portion, which is arranged around the light-emitting component or the movable member in the expanded state and is arranged at a radial interval from the light-emitting component or the movable member; A connecting portion, which is connected between the positioning portion and the light-emitting component or the movable member to maintain the radial interval between the positioning portion and the light-emitting component or the movable member.

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