Flexible delivery device with optical path for minimally invasive surgery

Abstract

The present invention discloses a flexible optical path delivery device for minimally invasive surgery, including a catheter body with integrated optical path channels, repair material delivery channels and drive guide wire channels, the catheter body is a flexible structure, a control mechanism is provided at the proximal end and an execution head is provided at the distal end; the control mechanism includes a multi-channel connector, one end of the multi-channel connector is connected to the catheter body, and the other end is connected to a repair material delivery interface, a light source interface and a control handle, the catheter body of the device of the present invention is an integrated multi-lumen tube structure or a multi-soft hose integrated structure, highly integrated optical path channels, repair material delivery channels and drive guide wire channels, and accurate treatment is achieved when the outer diameter of the catheter is very small, that is, the surgical wound is very small. In addition, a repair material delivery channel switching device is provided inside the multi-channel connector of the present invention, and a curing strategy of "continuous illumination, differentiating the amount of material delivered per unit time" is adopted to ensure uniform curing of different materials and improve efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a flexible optical path delivery device for minimally invasive surgery. Background Art

[0002] Photocurable hydrogel materials or hydrogel hybrid materials are widely used in in situ repair in vivo. Photocurable hydrogel materials need to be formed with the help of light. Currently, when performing in situ repair surgery in vivo, the photocurable material is generally injected into the area to be repaired at one time, and then irradiated with another light source.

[0003] Chinese patent CN110101448A - Photocurable hydrogel delivery device and in-situ printing method for minimally invasive surgery designs the nozzle posture adjustment to make the light radiation received by the photocurable material more stable and uniform. The nozzle at the execution end of the device is large in size, and the hard shell design greatly limits the freedom and flexibility of the execution end. In addition, there is only artificially set interval feeding, and there is no structural design for the material delivery amount.

[0004] Chinese patent CN115463307A-medical catheter can monitor the treatment effect in real time during the treatment process, and can also adjust the bending angle of the distal part at any time to make the distal part close to the lesion, thereby achieving precise targeted treatment of the lesion, improving the treatment effect, and increasing the success rate of the operation. The medical catheter does not involve light path irradiation, the overall flexibility is not high, and it is not suitable for interventional surgery. Moreover, it belongs to a different inventive concept from the device introduced in the present invention. Summary of the invention

[0005] An embodiment of the present invention provides a flexible optical path delivery device for minimally invasive surgery that is intended to provide an integrated optical path channel, a repair material delivery channel, and a drive guide wire channel, with a multi-degree-of-freedom execution head, an adjustable material delivery amount, and an adjustable light irradiation angle.

[0006] The technical solution of the embodiment of the present invention is as follows:

[0007] A flexible optical path delivery device for minimally invasive surgery, comprising a catheter body integrating an optical path channel, a repair material delivery channel and a drive guide wire channel, wherein the catheter body is a flexible structure, a control mechanism is provided at the proximal end and an execution head is provided at the distal end;

[0008] The control mechanism comprises a multi-channel connector, one end of which is connected to the catheter body, and the other end is connected to a repair material delivery interface, a light source interface and a control handle, the control handle controls the execution head by driving the guide wire, the optical component is integrated into the light source interface, and is transmitted to the execution head through the optical path channel, and the repair material delivery interface delivers the received repair material to the execution head through the repair material delivery channel;

[0009] The catheter body includes an adjustable part that extends at least a certain distance, and the hardness of the adjustable part is less than the hardness of other tubes of the catheter body. One end of the execution head is connected to the adjustable part, and the other end is an execution end face. The execution end face is provided with a repair material outlet and a light outlet, and the execution end face is perpendicular to the catheter body or inclined at an angle.

[0010] As a further technical feature of the present invention: the optical component is a plurality of optical fiber bundles; or is a power supply wire extending to an LED connected to one end of the execution head.

[0011] As a further technical feature of the present invention: after the driving guide wire is wound around the control handle, it extends from the control handle along the driving guide wire channel to the adjustable part, and the actuator head is driven to deflect at multiple angles by rotating the control handle; or

[0012] The control handle is fixedly connected to a bidirectional driving screw, and the first driving nut and the second driving nut are respectively installed on the mutually opposite spirals of the bidirectional driving screw, the first driving guide wire is fixedly connected to the first driving nut, and the second driving guide wire is fixedly connected to the second driving nut, and the first driving guide wire and the second driving guide wire extend along the driving guide wire channel to the adjustable part. The first driving nut and the second driving nut are driven to rotate in opposite directions by rotating the operating handle, thereby driving the multi-angle free movement of the actuator head.

[0013] As a further technical feature of the present invention: a repair material outlet is provided at the center of the execution end surface, and at least one light outlet is provided at the periphery of the repair material outlet.

[0014] As a further technical feature of the present invention: the light outlet covers other positions of the execution end surface except the repair material outlet in the form of a light-transmitting sheet.

[0015] As a further technical feature of the present invention: a repair material delivery channel switching device is provided inside the multi-channel connector, including a movable channel and its interface connected to the repair material delivery interface, and a switching tube with multiple repair material delivery channels with different apertures, and the movable channel interface is connected to the repair material delivery channels with different apertures by rotating the switching tube.

[0016] As a further technical feature of the present invention: one end of the switching tube is a circumferential gear structure and is provided with a gear meshing therewith, the gear is provided with a central axis and can rotate along the central axis, a switching rod is fixedly connected to the extension of the central axis, the free end of the switching rod passes through the through hole on the surface of the multi-channel connector, and is used to toggle the switching rod to drive the gear to rotate, thereby driving the switching tube to rotate;

[0017] The free end of the switching rod is provided with a spring plunger, and the multi-channel connector is provided with an injection hole and a scale matching the spring plunger.

[0018] As a further technical feature of the present invention: the repair material delivery channel switching device also includes a reset spring and a limit body, the movable end of the reset spring is fixedly connected to the movable channel, and the other end is fixedly connected to the limit body.

[0019] As a further technical feature of the present invention: the catheter body is an integrated multi-lumen tube structure or a multi-flexible tube integrated structure.

[0020] As a further technical feature of the present invention: the inclination angle between the execution end face and the catheter body ranges from 0 to 60 degrees.

[0021] As a further technical feature of the present invention: the outer diameter of the catheter body ranges from 1mm to 3mm, preferably from 1.67mm to 2.67mm, and the aperture range of the optical path channel, the repair material channel and the drive guide wire channel is 0.3mm to 0.6mm.

[0022] As a further technical feature of the present invention: the repair material delivery interface is a syringe Luer interface.

[0023] The present invention provides a flexible optical path delivery device for minimally invasive surgery, which has the following beneficial effects:

[0024] A catheter body including an integrated optical path channel, a repair material delivery channel and a drive guide wire channel, wherein the catheter body is a flexible structure, a control mechanism is provided at the proximal end and an execution head is provided at the distal end;

[0025] The control mechanism comprises a multi-channel connector, one end of which is connected to the catheter body, and the other end is connected to a repair material delivery interface, a light source interface and a control handle, the control handle controls the execution head by driving the guide wire, the optical component is integrated into the light source interface, and is transmitted to the execution head through the optical path channel, and the repair material delivery interface delivers the received repair material to the execution head through the repair material delivery channel;

[0026] The catheter body includes an adjustable part that extends at least a certain distance, and the hardness of the adjustable part is less than the hardness of other tubes of the catheter body. One end of the execution head is connected to the adjustable part, and the other end is an execution end face. The execution end face is provided with a repair material outlet and a light outlet, and the execution end face is perpendicular to the catheter body or inclined at an angle.

[0027] By providing a driving guide wire and a control handle, and an adjustable portion that extends at least a certain distance and is connected to the execution head, the device has a multi-degree-of-freedom adjustable execution head, which improves the ease and flexibility of operation and increases the delivery range of repair materials and the illumination area during minimally invasive surgery, thereby increasing the surgical operable range without increasing the size of the surgical incision.

[0028] In addition to the above-mentioned multi-degree-of-freedom adjustable execution head, the device of the present invention is also designed with a variety of combinations of repair material outlets and light outlets on the execution end faces, and the execution end faces are set to be perpendicular to the catheter body (0 degree irradiation angle) or inclined at an angle (preferably 30 to 60 degrees irradiation angle), which complies with the principles of gravity. This allows the repair material to be accurately irradiated with light in the area to be repaired in the body, improves the light curing effect, and achieves further precise treatment on the basis of high flexibility.

[0029] The catheter body of the device of the present invention is an integrated multi-lumen tube structure or a multi-flexible tube integrated structure, which highly integrates the optical path channel, the repair material delivery channel and the drive guide wire channel, so that the outer diameter range of the catheter body of the device of the present invention is 1mm-3mm, preferably 1.67mm-2.67mm, and the aperture range of the optical path channel, the repair material channel and the drive guide wire channel is 0.3mm-0.6mm, thereby achieving precise treatment when the outer diameter of the catheter is very small, that is, the surgical incision is very small.

[0030] The multi-channel connector is equipped with a repair material delivery channel switching device inside. By designing the switching device structure, multiple repair material delivery channels with different apertures can be freely switched, so that different delivery amounts per unit time can be freely selected. This curing strategy of "continuous illumination and differentiated selection of delivery amounts per unit time" can ensure uniform curing of different materials and improve efficiency.

[0031] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is an overall structural diagram of a flexible optical path delivery device for minimally invasive surgery in an embodiment of the present application;

[0034] Figure 2is a cross-sectional view of the execution head and the adjustable part in the embodiment of the present application;

[0035] Figure 3 This is a diagram showing the connection between the repair material delivery interface, the light source interface and the control handle and the catheter body in an embodiment of the present application with the multi-channel connector hidden;

[0036] Figure 4 This is a schematic diagram of the first winding of the driving guide wire and the control handle in the embodiment of the present application;

[0037] Figure 5 This is a second winding schematic diagram of the drive guide wire and the control handle in the embodiment of the present application;

[0038] Figure 6 This is a schematic diagram of the embodiment of the present application in which the execution end surface is perpendicular to the catheter body;

[0039] Figure 7 is a schematic diagram of an embodiment of the present invention in which the execution end face and the catheter body are at an inclined angle;

[0040] Figure 8 is a schematic diagram of an end face when the optical component is a plurality of optical fiber bundles in an embodiment of the present invention;

[0041] Fig. 9 is a schematic diagram of an execution end face when there are multiple groups of light outlets in an embodiment of the present invention;

[0042] Fig.10 is a structural diagram of a repair material delivery channel switching device in an embodiment of the present invention;

[0043] Fig.11 is a partial disassembly diagram of a repair material delivery channel switching device in an embodiment of the present invention;

[0044] Fig.12 It is a cross-sectional view of a repair material delivery channel switching device in an embodiment of the present invention.

[0045] Description of reference numerals:

[0046] 1. catheter body, 11. adjustable portion;

[0047] 2. Control mechanism, 21. Multi-channel connector, 22. Repair material delivery interface, 23. Light source interface, 24. Control handle, 251. Movable channel, 252. Movable channel interface, 253. Switching tube, 254. Gear, 256. Switching rod, 2561. Spring plunger, 257. Return spring, 258. Limiting body, 26. Bidirectional driving screw, 27. First driving nut, 271. First driving guide wire, 28. Second driving nut, 281. Second driving guide wire;

[0048] 3. Execution head, 33. Execution end face, 4. Repair material delivery channel, 5. First repair material delivery channel, 6. Second repair material delivery channel, 7. Third repair material delivery channel, 8. Drive guide wire, 9. Optical component, 81. Drive guide wire fixing structure, 331. Repair material outlet, 3311. First repair material outlet, 3312. Second repair material outlet, 3313. Third repair material outlet, 332. Optical outlet. DETAILED DESCRIPTION

[0049] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0050] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0052] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0053] like Figures 1 to 12As shown, a flexible optical path delivery device for minimally invasive surgery includes a catheter body 1 with an integrated optical path channel, a repair material delivery channel 4, and a drive guide wire channel. The catheter body 1 is a flexible structure, with a control mechanism 2 at the proximal end and an execution head 3 at the distal end;

[0054] like Figure 1 As shown, the control mechanism 2 includes a multi-channel connector 21, one end of the multi-channel connector 21 is connected to the catheter body 1, and the other end is connected to a repair material delivery interface 22, a light source interface 23 and a control handle 24, the control handle 24 controls the execution head 3 by driving the guide wire, the optical component 9 is integrated into the light source interface 23, and is transmitted to the execution head 3 through the optical path channel, and the repair material delivery interface 22 delivers the received repair material to the execution head 3 through the repair material delivery channel;

[0055] like Figure 1 , Figure 2 As shown, the catheter body 1 includes an adjustable portion 11 extending at least a certain distance, the hardness of the adjustable portion 11 is less than the hardness of other tubes of the catheter body 1, one end of the execution head 3 is connected to the adjustable portion 11, and the other end is an execution end surface 33. The execution end surface 33 is provided with a repair material outlet and a light outlet, and the execution end surface 33 is perpendicular to the catheter body 1 or inclined at an angle.

[0056] like Figure 2 As shown, the optical component 9 extends from the adjustable part 11 to the execution end surface 33, and the drive guide wire 8 is fixed to the distal end of the adjustable part 11 by a drive guide wire fixing structure 81, which can be welded or in any other fixing manner.

[0057] like Figure 3 As shown, without using the multi-channel connector 21, the repair material delivery interface 22 is directly connected to the repair material delivery channel in the catheter body; the light source interface 23 is connected to the optical path channel in the catheter body, and the drive guide wire extending from the control handle 24 is connected to the drive guide wire channel.

[0058] like Figure 4 As shown, after the driving guide wire 8 is wound around the control handle 24, it extends from the control handle 24 along the driving guide wire channel to the adjustable part 11, and the multi-angle movement of the execution head 3 is driven by rotating the control handle 24.

[0059] In another embodiment, if Figure 5As shown, the control handle 24 is fixedly connected to a bidirectional driving screw 26, and the bidirectional driving screw 26 has two parts of spirals in opposite directions. The first driving nut 27 and the second driving nut 28 are respectively installed on the spirals in opposite directions of the bidirectional driving screw 26, that is, the internal spiral directions of the first driving nut 27 and the second driving nut 28 are in opposite directions. The first driving guide wire 271 is fixedly connected to the first driving nut 27, and the second driving guide wire 281 is fixedly connected to the second driving nut 28. The first driving guide wire 271 and the second driving guide wire 281 extend along the driving guide wire channel to the adjustable part 11. The first driving nut 27 and the second driving nut 28 are driven to rotate in opposite directions by rotating the operating handle 24, thereby driving the stretching action of the first driving guide wire 27 and the second driving guide wire 281, thereby driving the multi-angle free action of the execution head 3. Specifically, when the control handle 24 is rotated, the bidirectional drive screw 26 rotates at the same time, driving the first drive nut 27 and the second drive nut 28 to rotate in opposite directions, and move in opposite directions along the axial direction of the bidirectional drive screw 26, thereby driving the first drive wire 271 and the second drive wire 281 to drive the screw axially in opposite directions, further driving the distal execution head 3 to achieve deflection.

[0060] like Figure 6 , Figure 7 As shown, a repair material outlet 331 is provided at the center of the execution end surface 33, and at least one light outlet 332 is provided at the periphery of the repair material outlet 331 ( Figure 7 There is only one light outlet 332 shown, but in actual use, there may be two or more light outlets around the periphery. Figure 6 , Figure 7 As shown, the execution end surface 33 is perpendicular to the catheter body 1 or inclined at an angle. Preferably, the execution end surface is inclined at an angle of 0-60 degrees to the catheter shaft (such as Figure 7 As shown, it is inclined at an angle of 30 degrees), the repair material outlet is arranged at a non-central position of the execution end surface, and the light-transmitting structure (light-transmitting sheet) is arranged relative to the repair material outlet to facilitate the repair material to receive light exposure after the outlet.

[0061] The optical components are a plurality of optical fiber bundles; or a power supply wire extending to an LED connected to one end of the execution head. In the specific implementation process, the wavelength of light at the light outlet of the execution head is in the range of 365-550nm, and the repair material precursor can be transformed into the repair material within 1-60 seconds.

[0062] In one embodiment, when the optical component is a LED connected to one end of the power supply wire extending to the execution head, Figure 6 As shown, the light outlet 332 is in the form of a light-transmitting sheet covering other positions of the execution end surface 33 except the repair material outlet.

[0063] like Figure 8 As shown, when the optical component is a plurality of optical fiber bundles. Figure 8 The example in FIG. 1 shows a plurality of optical fibers (with 332 as light outlets) and a repair material outlet 331. Figure 8 At this time, multiple groups of optical fibers 332 are arranged around the circumference of the repair material outlet 331, and the optical fibers can protrude outside the execution end surface 33 or be flush with the execution end surface 33.

[0064] It should be noted that other combinations of repair material outlets and light-transmitting structures on the printing end surface are applicable to the present invention, such as Figure 6 As shown, multiple repair material delivery channels can converge into a repair material outlet in the printing end face, or as shown in FIG. Fig. 9 As shown, multiple repair material delivery channels extend to the printing end surface respectively, and are output from each repair material outlet respectively. Fig. 9 The first repair material outlet 3311, the second repair material outlet 3312 and the third repair material outlet 3313 extend to the printing end surface respectively, and output from each repair material outlet.

[0065] like Figure 1 , Fig.10 , Fig.11 As shown, the multi-channel connector 21 is provided with a repair material delivery channel switching device inside, including a movable channel 251 and its interface 252 connected to the repair material delivery interface 22, and a switching tube 253 with multiple repair material delivery channels of different apertures. The movable channel interface 252 is connected to the repair material delivery channels of different apertures by rotating the switching tube 253.

[0066] like Figure 1 , Fig.10 , Fig.11 As shown, one end of the switching tube 253 is a circumferential gear structure and is equipped with a gear 254 meshing therewith. The gear 254 is provided with a central axis and can rotate along the central axis. The central axis is fixedly connected with a toggle switching rod 256. The free end of the switching rod 256 passes through the through hole on the surface of the multi-channel connector 21, which is used to toggle the switching rod 256 to drive the gear 254 to rotate, and further drive the switching tube 253 to rotate.

[0067] like Figure 1 , Figures 10 to 12As shown, the repair material delivery channel switching device also includes a reset spring 257 and a limiter 258. The movable end of the reset spring 257 is fixedly connected to the movable channel 251, and the other end is fixedly connected to the limiter 258. The rotating switching tube 253, the interface of the movable channel 251 is compressed and exits the first repair material delivery channel 5, and automatically pops out to connect to the second repair material delivery channel 6 or the third repair material delivery channel 7; multiple repair material delivery channels can be freely switched and selected, and the channel diameters are different, and different infusion volumes can be achieved per unit time. Furthermore, each channel can deliver different types of media in a single operation, which can prevent physical and chemical reactions between different delivery materials.

[0068] like Figure 1 As shown, a spring plunger 2561 is provided at the free end of the switching rod 256, and an injection hole and a scale (not shown in the figure) matching the spring plunger 2561 are provided on the multi-channel connector 21.

[0069] The catheter body of the device of the present invention is an integrated multi-lumen tube structure or a multi-flexible tube integrated structure, which highly integrates the optical path channel, the repair material delivery channel and the drive guide wire channel, so that the outer diameter range of the catheter body of the device of the present invention is 1mm-3mm, preferably 1.67mm-2.67mm, and the aperture range of the optical path channel, the repair material channel and the drive guide wire channel is 0.3mm-0.6mm, thereby achieving precise treatment when the outer diameter of the catheter is very small, that is, the surgical incision is very small.

[0070] The catheter body of the device is an integrated multi-lumen tube structure. In a preferred embodiment, in the case of dual optical channels, the apertures of the optical channel, the drive guide wire channel, and the repair material delivery channel are all 0.4 mm. The outer diameter of the catheter body is 1.6 mm. In another preferred embodiment, in the case of four optical channels and / or an irradiation angle of 30 degrees for the exit light, the apertures of the repair material delivery channel and the optical channel are 0.4 mm, the aperture of the drive guide wire channel is 0.2 mm, and the outer diameter of the catheter body is 1.6 mm.

[0071] In view of the device catheter body being a multi-hose integrated structure, in a preferred embodiment, in the case of dual optical channels, the inner diameters of the optical channel, the drive guidewire channel, and the repair material delivery channel are all 0.4mm, and the outer diameters are all 0.5mm. The outer diameter of the catheter body is 1.6mm; in another preferred embodiment, in the case of four optical channels and / or an irradiation angle of 30 degrees for the exit light, the inner diameters of the repair material delivery channel and the optical channel are both 0.4mm, and the outer diameters are both 0.5, the inner diameter of the drive guidewire channel is 0.2mm, and the outer diameter is 0.3mm, and the outer diameter of the catheter body is 1.6mm. In addition to the above catheter body being an integrated multi-lumen tube structure or a multi-hose integrated structure, other easily conceivable interfaces or structures are all replacements for the structure of the present invention.

[0072] like Figure 1 As shown, the repair material delivery interface 22 is a syringe Luer interface.

[0073] In summary, the present invention provides a flexible optical path delivery device for minimally invasive surgery, comprising a catheter body integrating an optical path channel, a repair material delivery channel, and a drive guide wire channel, wherein the catheter body is a flexible structure, a control mechanism is provided at the proximal end, and an execution head is provided at the distal end;

[0074] The control mechanism comprises a multi-channel connector, one end of which is connected to the catheter body, and the other end is connected to a repair material delivery interface, a light source interface and a control handle, the control handle controls the execution head by driving the guide wire, the optical component is integrated into the light source interface, and is transmitted to the execution head through the optical path channel, and the repair material delivery interface delivers the received repair material to the execution head through the repair material delivery channel;

[0075] The catheter body includes an adjustable part that extends at least a certain distance, and the hardness of the adjustable part is less than the hardness of other tubes of the catheter body. One end of the execution head is connected to the adjustable part, and the other end is an execution end face. The execution end face is provided with a repair material outlet and a light outlet, and the execution end face is perpendicular to the catheter body or inclined at an angle.

[0076] By providing a driving guide wire and a control handle, and an adjustable portion extending at least a certain distance to be connected to the execution head, the device has a multi-degree-of-freedom adjustable execution head, which improves the ease and flexibility of operation, and increases the range of repair material delivery and the range of the illumination area during minimally invasive surgery, thereby increasing the operable range of surgery without increasing the size of the surgical incision;

[0077] In addition to the above-mentioned multi-degree-of-freedom adjustable execution head, the device of the present invention is also designed with a variety of combinations of repair material outlets and light outlets on the execution end surface, and the execution end surface is set to be perpendicular to the catheter body (0 degree irradiation angle) or inclined at an angle (preferably 30 to 60 degrees irradiation angle), which conforms to the principle of gravity, so that the repair material can be accurately irradiated with light in the area to be repaired in the body, improve the light curing effect, and further achieve precise treatment on the basis of high flexibility;

[0078] The multi-channel connector is equipped with a repair material delivery channel switching device inside. By designing the switching device structure, multiple repair material delivery channels with different apertures can be freely switched, so that different delivery amounts per unit time can be freely selected. This curing strategy of "continuous illumination and differentiated selection of delivery amounts per unit time" can ensure uniform curing of different materials and improve efficiency.

[0079] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0080] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A flexible optical path delivery device for minimally invasive surgery, characterized in that: It comprises a catheter body with an integrated optical path channel, a repair material delivery channel and a drive guide wire channel, wherein the catheter body is a flexible structure, a control mechanism is provided at the proximal end and an execution head is provided at the distal end; The control mechanism comprises a multi-channel connector, one end of which is connected to the catheter body, and the other end is connected to a repair material delivery interface, a light source interface and a control handle, the control handle controls the execution head by driving the guide wire, the optical component is integrated into the light source interface, and is transmitted to the execution head through the optical path channel, and the repair material delivery interface delivers the received repair material to the execution head through the repair material delivery channel; The catheter body includes an adjustable portion extending at least a certain distance, the hardness of the adjustable portion is less than the hardness of other tubes of the catheter body, one end of the execution head is connected to the adjustable portion, and the other end is an execution end face, the execution end face is provided with a repair material outlet and a light outlet, and the execution end face is perpendicular to the catheter body or inclined at an angle; After the driving guide wire is wound around the control handle, it extends from the control handle along the driving guide wire channel to the adjustable portion; The multi-channel connector is provided with a repair material delivery channel switching device inside, and the repair material delivery channel switching device includes a movable channel and an interface connected to the repair material delivery interface, and a switching tube with a plurality of repair material delivery channels with different apertures, and the interface of the movable channel is connected to the repair material delivery channels with different apertures by rotating the switching tube; One end of the switching tube is a circumferential gear structure and is equipped with a gear meshing therewith, the gear is provided with a central axis and can rotate along the central axis, the central axis is fixedly connected with a toggle switch rod, the free end of the switch rod passes through the through hole on the surface of the multi-channel connector, and is used to toggle the switch rod to drive the gear to rotate, thereby driving the switching tube to rotate; the free end of the switch rod is provided with a spring plunger, and the multi-channel connector is provided with an injection hole and a scale that match the spring plunger; The repair material delivery channel switching device also includes a reset spring and a limiter. The movable end of the reset spring is fixedly connected to the movable channel, and the other end is fixedly connected to the limiter.

2. The optical path flexible delivery device for minimally invasive surgery according to claim 1, characterized in that: The optical components are a plurality of optical fiber bundles; or a power supply wire extending to an LED connected to one end of the execution head.

3. The light path flexible delivery device for minimally invasive surgery according to claim 1, characterized in that: After the driving guide wire is wound around the control handle, the guide wire extending from the control handle along the driving guide wire channel to the adjustable portion is replaced by: The control handle is fixedly connected to a bidirectional drive screw, a first drive nut and a second drive nut are respectively installed on opposite spirals of the bidirectional drive screw, a first drive guide wire is fixedly connected to the first drive nut, and a second drive guide wire is fixedly connected to the second drive nut, and the first drive guide wire and the second drive guide wire extend along the drive guide wire channel to the adjustable part.

4. The light path flexible delivery device for minimally invasive surgery according to claim 1, characterized in that: A repair material outlet is provided at the center of the execution end surface, and at least one light outlet is provided at the periphery of the repair material outlet.

5. The light path flexible delivery device for minimally invasive surgery according to claim 4, characterized in that: At the light outlet, other positions of the execution end surface except the repair material outlet are covered in the form of a light-transmitting sheet.

6. The light path flexible delivery device for minimally invasive surgery according to any one of claims 1 to 5, characterized in that: The outer diameter of the catheter body ranges from 1 mm to 3 mm; the apertures of the optical path channel, the repair material delivery channel and the drive guide wire channel range from 0.3 mm to 0.6 mm.

7. The optical path flexible delivery device for minimally invasive surgery according to any one of claims 1 to 5, characterized in that: The catheter body is an integrated multi-lumen tube structure or a multi-flexible tube integrated structure.

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