Laser fiber sheath and laser vaporization ablation surgical device

Abstract

The invention discloses a laser optical fiber sheath and a laser vaporization ablation operation device, and relates to the technical field of medical instruments. The laser optical fiber sheath comprises an optical fiber, a positioning piece, a reflecting piece and a rotating piece, and the positioning piece is arranged on the outer side of the optical fiber and used for fixing the emission angle of the optical fiber; the reflecting part is close to the transmitting end of the optical fiber, one side, close to the transmitting end, of the reflecting part is provided with a reflecting inclined surface, and the reflecting inclined surface is obliquely arranged relative to the laser transmitting direction and is used for reflecting laser emitted by the optical fiber; one end of the rotating piece is connected with the reflecting piece and used for driving the reflecting piece to rotate with the laser emitting direction as the axis. Based on the technical scheme disclosed by the invention, not only can the temperature rise of laser energy be improved to meet the surgical requirements of coagulation necrosis and vaporization ablation of specific target tissues, but also the control and light path design can be effectively simplified, and the operation difficulty of the laser ablation surgery is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a laser optical fiber sheath and a laser vaporization ablation surgical device. Background Art

[0002] Laser ablation is a newly developed ablation technology. When biological tissue absorbs laser energy of a certain wavelength, it rapidly raises the target tissue temperature to between 43°C and 300°C. This highly concentrated and controllable laser energy coagulates, vaporizes, ablates, and pulverizes the target tissue, while also having a significant coagulation effect.

[0003] Because laser energy is transmitted through optical fibers and irradiated to target tissue, it is transmitted in a point-like, linear manner through the fiber optic port. The light divergence angle is very small and fixed, generally less than 440 mrad. Therefore, the laser acts on the target tissue in a straight line and point-like manner, and the irradiation diameter is generally less than 1 mm. Therefore, within the limited endoscopic space, direct laser irradiation ablation of large-volume and large-area target tissue is not suitable. Only small tumors such as thyroid tumors, adrenal tumors, small hepatocellular carcinomas, and brain-related tumors can be ablated, thus limiting the development and application of laser ablation.

[0004] In related technologies, in order to expand the application scope of laser ablation, especially to enable it to be used for the ablation of large tumor tissues, the number of beams is generally increased or the scattering ability of laser energy is improved, thereby realizing the transformation of laser energy from "point" to "surface".

[0005] However, limited laser energy (laser energy with high average power can easily cause serious tissue thermal damage) and multi-faceted scattering weaken the intensity of the laser energy, making it impossible to achieve high-energy uniform distribution and temperature rise in the target tissue. Therefore, the temperature rise of the laser energy in related technologies can only be maintained in the lower temperature range of coagulation necrosis of the target tissue (60-150°C), which can only ablate low-density tissue and coagulate high-density tissue, but cannot perform vaporization ablation on high-density tissue (benign and malignant tumors), and cannot overcome the defect of "coagulation necrosis" of the currently commonly used ablation technique.

[0006] It can be seen that the laser ablation solutions of related technologies have the following aspects that need to be improved: First, due to the dispersion of laser energy and insufficient local energy, related laser ablation solutions cannot vaporize and ablate high-density tissues (benign and malignant tumors), and their application scope remains limited. Secondly, the control is difficult and the optical path design is complex, making it difficult to implement on the "narrow" end of minimally invasive surgical instruments. Summary of the Invention

[0007] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and propose a laser fiber sheath and laser vaporization ablation surgical device to solve the technical problems in the existing technology such as laser energy dispersion, local energy deficiency, limited application range, difficulty in control, complex optical path design, and difficulty in implementation in minimally invasive surgery.

[0008] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: The present invention provides a laser fiber sheath, comprising: Optical fiber, used to transmit and emit laser light; A positioning member, disposed outside the optical fiber, for fixing the emission angle of the optical fiber; a reflector, close to the emitting end of the optical fiber, and a reflective slope is provided on one side of the reflector close to the emitting end, wherein the reflective slope is inclined relative to the laser emission direction and is used to reflect the laser emitted by the optical fiber; and The rotating member has one end connected to the reflecting member and is used to drive the reflecting member to rotate with the laser emission direction as the axis.

[0009] In some embodiments, the positioning member is a positioning tube, and the positioning tube is sleeved on the outside of the optical fiber.

[0010] In some embodiments, the rotating member is a rotating tube, which is sleeved on the outside of the optical fiber and rotates with the optical fiber; one end of the rotating tube is connected to the reflective member, and a light-transmitting area is provided on the rotating tube in the laser reflection direction facing the reflective slope.

[0011] In some embodiments, the rotating tube comprises: A first tube section is sleeved on the outside of the optical fiber and is rotatably arranged with the optical fiber; and The second tube section is made of a light-transmitting material and is coaxially fixedly arranged on an end of the first tube section close to the reflector for connecting to the reflector.

[0012] In some embodiments, the laser fiber sheath further comprises: An axial movable member is movably sleeved on the outside of the optical fiber and connected to one end of the rotating member, and is used to drive the rotating member and the reflecting member to move along the axial direction of the optical fiber.

[0013] In some embodiments, the laser fiber sheath further comprises: The optical fiber fixing part is fixedly arranged on the axial movable part, and the optical fiber fixing part is provided with a clamping mechanism for clamping and fixing the optical fiber.

[0014] In some embodiments, the angle between the reflective slope and the laser emission direction is 44-46 degrees.

[0015] In some embodiments, a tip for inserting into target tissue is provided on a side of the reflective member away from the reflective slope.

[0016] The present invention also provides a laser vaporization ablation surgical device, comprising an operator and the above-mentioned laser fiber sheath, wherein the operator is respectively connected to the rotating part and the axial movable part for controlling the rotation and axial movement of the emitted laser.

[0017] In some embodiments, the operator comprises: case; a rotation drive assembly, disposed on the housing and in transmission connection with the rotating member, for driving the rotating member to rotate; and The telescopic driving assembly is arranged on the housing and is in transmission connection with the axial movable member, and is used for driving the axial movable member to move along the axial direction of the optical fiber.

[0018] In some embodiments, an endoscope is further included, wherein the endoscope comprises: An endoscope body is fixedly arranged on one side of the manipulator and is provided with an optical fiber sheath channel for passing the laser optical fiber sheath; An endoscope sheath is sleeved on the outside of the laser fiber sheath and fixedly connected to the endoscope body, and an optical channel, an illumination channel, and a water vapor inlet channel are formed between the endoscope sheath and the laser fiber sheath; an optical imaging assembly, disposed on the endoscope body and connected to the optical channel, for providing a visible image; a light source interface, provided on the endoscope body and connected to the lighting channel, for providing a light source; and The water and gas interface is provided on the endoscope body and is connected to the water and gas inlet channel for water or air intake.

[0019] In some embodiments, an outer sheath tube is further included, which is sleeved on the outside of the endoscope sheath and fixedly connected to the endoscope body; a water vapor discharge channel is formed between the outer sheath tube and the endoscope sheath, and a water vapor discharge outlet connected to the water vapor discharge channel is also fixed on the outer sheath tube.

[0020] Compared with the existing technology, the present invention provides a laser fiber sheath and laser vaporization ablation surgical device, which transmit and emit laser through optical fiber. The positioning part is arranged on the outside of the optical fiber, which can assist in determining the emission angle of the optical fiber. The reflecting part is close to the emitting end of the optical fiber and is provided with a reflecting inclined surface. The reflecting inclined surface can reflect the laser emitted by the optical fiber, and the rotating part can drive the reflecting part to rotate, so that the laser reflected by the reflecting inclined surface forms an ablation surface on the target tissue.

[0021] In this way, the present invention applies the reflection principle of laser and uses the reflecting inclined plane to realize the light emission from the side of the optical fiber beam. The rotating part drives the reflecting part to rotate, and the linear (column) light source is converted into a surface light source. The energy intensity of the light beam for local irradiation is completely retained, and the temperature rise of the laser energy is increased to meet the surgical needs of coagulation necrosis and vaporization ablation of specific target tissues, thereby expanding the application scope of laser ablation surgery. At the same time, it effectively simplifies the control and optical path design, helps to reduce the operational difficulty of laser ablation surgery, and indirectly expands the application scenarios of laser ablation surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic cross-sectional view of the overall structure of a laser fiber sheath in one embodiment of the present invention; Figure 2 is a schematic diagram of a first partial structure of a laser fiber sheath in one embodiment of the present invention; Figure 3 is a schematic diagram of a second partial structure of a laser fiber sheath according to an embodiment of the present invention; Figure 4 is a cross-sectional schematic diagram of a laser vaporization ablation surgical device according to one embodiment of the present invention; Figure 5 This is a schematic diagram of a first partial structure of a laser vaporization ablation surgical device according to one embodiment of the present invention; Figure 6 1 is a schematic diagram of a second partial structure of a laser vaporization ablation surgical device according to an embodiment of the present invention; Figure 7 It is a vertical cross-sectional schematic diagram of a laser vaporization ablation surgical device at the endoscope sheath in one embodiment of the present invention.

[0023] Explanation of the reference numerals: 1. optical fiber; 2. positioning tube; 3. reflector column; 31. reflective bevel; 32. tip; 4. rotating tube; 41. first tube section; 42. second tube section; 5. sliding sleeve; 51. external thread section; 6. rotating bearing; 7. optical fiber locker; 71. base; 711. deep hole groove; 72. rotary cover; 721. internal pin; 73. clamping block; 8. operator; 81. housing; 811. internal thread section; 812. endoscope interface; 82. rotation drive assembly; 821. first gear; 822. first gear transmission mechanism; 8221. first rotation drive gear; 8222. second rotation drive gear; 8223. third rotation drive gear ;823, first rotating member;83, telescopic drive assembly;831, second gear;832, second gear transmission mechanism;8321, first telescopic drive gear;8322, second telescopic drive gear;8323, third telescopic drive gear;833, second rotating member;9, endoscope;91, endoscope body;911, optical fiber sheath channel;92, endoscope sheath;93, optical imaging assembly;931, eyepiece;932, optical channel;94, light source interface;941, lighting channel;95, water vapor interface;951, water vapor inlet channel;96, outer sheath;97, water vapor outlet;971, water vapor outlet channel;10, outer sheath;11, sealing gasket. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] In order to solve the above technical problems, the present invention provides a laser fiber sheath and a laser vaporization ablation surgical device, which can not only increase the temperature rise of laser energy to meet the surgical requirements of coagulation necrosis and vaporization ablation of specific target tissues, but also effectively simplify the control and optical path design, and reduce the operational difficulty of laser ablation surgery.

[0026] See also Figure 1-2 The present invention provides a laser fiber sheath, which includes an optical fiber 1 and a positioning piece. The optical fiber 1 can be used to transmit and emit laser light, and the positioning piece can assist in fixing the emission angle of the optical fiber 1; a reflector is also provided at one end of the optical fiber 1, which can reflect the laser emitted by the optical fiber 1 to achieve side light emission.

[0027] Specifically, the above-mentioned positioning part can be a positioning tube 2, which can be installed on the outside of the optical fiber 1, thereby limiting the light output direction of the optical fiber 1; the end of the optical fiber 1 close to the reflector can pass through the positioning tube 2, so that the laser emitted from the emitting end of the optical fiber 1 can be directly projected onto the reflector.

[0028] The reflector is primarily used to reflect the laser light emitted from the emitting end of the optical fiber 1 and can be a reflector column 3. The reflector column 3 can be made of quartz and can have a reflective bevel 31 disposed on the side of the reflector column 3 that is closest to the optical fiber 1. The reflective bevel 31 can be provided with a reflective coating (not shown in the figure) that can reflect the laser light emitted from the optical fiber 1.

[0029] It should be noted that the above-mentioned reflective bevel 31 is tilted relative to the laser emission direction, and the angle between the two can be set according to the requirements of a specific operation; but under normal circumstances, the angle between the reflective bevel 31 and the laser emission direction can be controlled between 44-46 degrees.

[0030] For example, in one embodiment, the angle between the reflective bevel 31 and the laser emission direction can be set to 45°; at this time, the laser emitted by the optical fiber 1 is irradiated on the reflective bevel 31, and after being reflected by the reflective bevel 31, the reflected laser is exactly perpendicular to its initial emission direction, thereby realizing side light emission.

[0031] The above-mentioned reflective coating is arranged on the reflective inclined surface 31, mainly used to ensure the laser reflectivity and reduce energy attenuation. Its specific material can be flexibly set according to needs. For example, in some embodiments, the reflective coating can be a metal coating (such as gold coating, aluminum coating and silver coating, etc.), or a dielectric film coating (the dielectric film coating is formed by alternating stacking of dozens to hundreds of dielectric films based on the principle of light wave reflection). There is no specific limitation on this.

[0032] At the same time, a tip 32 may be provided on the side of the reflector column 3 away from the reflective slope 31 , and with the help of the tip 32 , the laser fiber sheath can be inserted into the target tissue, thereby facilitating the completion of the laser ablation surgery.

[0033] See also Figure 1-2 The laser fiber sheath also includes a rotating member, one end of which is connected to the above-mentioned reflecting member, which can be used to drive the reflecting member to rotate.

[0034] In this embodiment, the above-mentioned rotating part can be a rotating tube 4, which includes a first tube section 41 and a second tube section 42; wherein, the first tube section 41 can be sleeved on the outside of the positioning tube 2 and form a rotational fit with the positioning tube 2, so that the rotating tube 4 as a whole can rotate around the positioning tube 2 and the optical fiber 1 inside it; the second tube section 42 can be fixedly sleeved on one end of the first tube section 41 close to the reflector column 3, and the above-mentioned reflector column 3 can be inserted and fixed at the other end of the second tube section 42, thereby realizing the connection between the rotating tube 4 and the reflector column 3.

[0035] Thus, when the first tube section 41 rotates on the positioning tube 2, the first tube section 41 drives the reflector column 3 to rotate around the optical fiber 1 through the second tube section 42, so that the laser reflected by the reflective bevel 31 changes from a line (column) light source to a surface light source.

[0036] It should be noted that, in order to ensure that the laser reflected by the reflective bevel 31 can be emitted from the side, the material of the second tube section 42 should be a light-transmitting material, such as quartz glass, or other similar light-transmitting materials, which is not specifically limited.

[0037] At the same time, in this embodiment, the rotating tube 4 is connected to the reflector column 3 through the second tube section 42, but in another embodiment, the above-mentioned rotating tube 4 can also be directly connected to the reflector column 3; in this case, the reflector column 3 can be directly fixed and inserted into the end of the rotating tube 4, and a light-transmitting area can be set on the rotating tube 4 facing the laser reflection direction. The light-transmitting area can be made of quartz glass or other similar light-transmitting materials, and there is no specific limitation on this.

[0038] See also Figure 1 In this embodiment, an axial movable part is further provided at one end of the rotating tube 4 away from the reflector column 3. The axial movable part is connected to the adjacent end of the rotating tube 4 and can drive the rotating tube 4 to move axially along the optical fiber 1.

[0039] Specifically, the axially movable member can be a sliding sleeve 5 , which can be sleeved on the positioning tube 2 , and an end thereof close to the rotating tube 4 can be rotatably connected to an adjacent end of the rotating tube 4 through a rotating bearing 6 .

[0040] In this way, when the sliding sleeve 5 moves on the positioning tube 2, the sliding sleeve 5 can drive the rotating tube 4 to move synchronously therewith; and, since the sliding sleeve 5 and the rotating tube 4 are connected by the rotating bearing 6, when the rotating tube 4 rotates on the positioning tube 2, it will not drive the sliding sleeve 5 to rotate synchronously therewith.

[0041] See also Figure 1 and Figure 3 The end of the sliding sleeve 5 away from the rotating tube 4 is also provided with an optical fiber fixing member, which can fix the optical fiber 1 so that the optical fiber 1 can move synchronously with the sliding sleeve 5. The optical fiber fixing member can be any optical fiber locker 7 with a clamping and fixing function, and is not specifically limited to this.

[0042] For example, in one embodiment, the optical fiber locker 7 includes a base 71 and a rotary cover 72, and a through hole is opened at the center of the base 71 and the rotary cover 72, so that the optical fiber 1 can pass through the base 71 and the rotary cover 72 through the through hole; wherein, the base 71 can be fixedly arranged on the end surface of the sliding sleeve 5 away from the rotating tube 4, and coaxially fixedly connected to the above-mentioned positioning tube 2, and the rotary cover 72 can be threadedly connected to the end of the base 71 away from the sliding sleeve 5.

[0043] At the same time, a deep hole groove 711 with a diameter larger than the above-mentioned through hole is provided at the center of the side of the base 71 close to the rotary cover 72, and two symmetrically arranged clamping blocks 73 are embedded at the bottom of the deep hole groove 711; the bottom of the deep hole groove 711 can be set into a bevel structure, and the clamping blocks 73 can be set with bevels on both sides along the axial direction of the optical fiber 1.

[0044] On this basis, an inner pin 721 is fixedly provided on the above-mentioned rotary cover 72. The inner pin 721 is located on the inner side of the internal thread on the rotary cover 72 and extends toward the inner side of the deep hole groove 711. The side of the inner pin 721 close to the clamping block 73 is provided with a wedge-shaped surface for cooperating with the inclined surface on the clamping block 73.

[0045] Thus, when the cover 72 is rotated, the threaded connection between the cover 72 and the base 71 allows the cover 72 to move closer to or further from the sliding sleeve 5. When the cover 72 approaches the sliding sleeve 5, the inner pin 721 advances toward the inside of the deep groove 711 and compresses the two clamping blocks 73. Because the inner pin 721 and the clamping blocks 73 abut against each other via a wedge-shaped surface and an inclined surface, the inner pin 721 pushes the two clamping blocks 73 toward each other and compresses the optical fiber 1, thereby clamping and securing the optical fiber 1. Conversely, when the cover 72 moves away from the sliding sleeve 5, the two clamping blocks 73 release the optical fiber 1.

[0046] It should be noted that after determining the distance between the end of the optical fiber 1 (ie, the emitting end) and the reflector column 3, the optical fiber 1 can be fixed by the optical fiber locker 7 to prevent the distance between the end of the optical fiber 1 and the reflector column 3 from changing.

[0047] When the laser emitted by the optical fiber 1 irradiates the reflector column 3, the reflector column 3 will reflect the laser to the side of the optical fiber 1 light beam, thereby achieving side light emission.

[0048] At this time, the rotating tube 4 can drive the reflector column 3 to rotate synchronously, so that the laser changes from a line (column) light source to a surface light source, forming the required energy distribution irradiation body. This energy distribution irradiation body can form a coagulated (or ablated) cylinder of the target tissue according to the size of the laser energy and the rotation speed.

[0049] On this basis, the sliding sleeve 5 can also drive the optical fiber 1 and the reflector column 3 to move and feed synchronously through the rotating tube 4 and the optical fiber locker 7, so that the laser optical fiber sheath as a whole moves downward in the target tissue to reach the cylindrical depth required clinically, completing the coagulation and ablation of the target tissue.

[0050] It can be understood that by controlling the rotation angle of the rotating tube 4, the structural form of the energy distribution irradiation body formed by the reflected laser can be changed; when the rotation angle of the rotating tube 4 is 0°, the laser will be emitted in a direction after being reflected by the reflector column 3, so the energy distribution irradiation body formed by it is actually a directional energy distribution irradiation body; when the rotation angle of the rotating tube 4 is less than 360°, the energy distribution irradiation body formed by the rotation of the reflected laser is actually a fan-shaped energy distribution irradiation body; and only when the rotation angle of the rotating tube 4 is 360°, the reflected laser will form a circular energy distribution irradiation body.

[0051] On this basis, when actually operating the laser fiber sheath, the rotation angle of the rotating tube 4 can be freely selected and controlled as needed, and no specific limitation is imposed on this.

[0052] See also Figure 4 Based on the above-mentioned laser fiber sheath, the present invention also provides a laser vaporization ablation surgical device, which includes a manipulator 8 and the above-mentioned laser fiber sheath. The manipulator 8 is connected to the laser fiber sheath and can control the rotation and axial movement of the emitted laser.

[0053] Specifically, such as Figure 5 As shown, the operator 8 includes a shell 81, a rotation drive assembly 82 and a telescopic drive assembly 83; the rotation drive assembly 82 can be connected to the rotating tube 4 on the laser fiber sheath, thereby controlling the rotation of the rotating tube 4; the telescopic drive assembly 83 can be connected to the sliding sleeve 5 on the laser fiber sheath, thereby controlling the sliding movement of the sliding sleeve 5.

[0054] The specific shape of the above-mentioned shell 81 is not limited and can be flexibly set as needed. For example, the shell 81 can be set to a rectangular cavity structure, or a cylindrical structure, or other cavity structures, so that the laser fiber sheath can be passed through the inside of the shell 81.

[0055] The above-mentioned rotation drive assembly 82 may include a first gear 821, a first rotating member 823 and a first gear transmission mechanism 822; wherein, the first gear 821 can be coaxially fixed on the outer wall of the rotating tube 4; the first rotating member 823 can be a knob, which can be rotatably set on the shell 81; the first gear transmission mechanism 822 is set inside the shell 81, and is used to transmit and connect the first gear 821 and the first rotating member 823.

[0056] It can be understood that the main function of the first gear transmission mechanism 822 is to realize the transmission between the first rotating member 823 and the first gear 821, and its specific gear transmission structure can be flexibly designed according to needs.

[0057] For example, in one embodiment, the first gear transmission mechanism 822 may include a first rotary drive gear 8221 rotatably set on the shell 81, the first rotary drive gear 8221 is meshed with the first gear 821, and the first rotary drive gear 8221 may also be coaxially fixed with a second rotary drive gear 8222, the second rotary drive gear 8222 may be a bevel gear, and the second rotary drive gear 8222 is meshed with a third rotary drive gear 8223, the third rotary drive gear 8223 may be rotatably set on the shell 81, and the third rotary drive gear 8223 may be coaxially fixed with the above-mentioned first rotating member 823 through a rotating shaft.

[0058] Thus, when the first rotating member 823 is rotated, the first rotating member 823 drives the third rotation driving gear 8223 to rotate, and the third rotation driving gear 8223 further drives the first rotation driving gear 8221 to rotate via the second rotation driving gear 8222. The first rotation driving gear 8221 can ultimately drive the rotating tube 4 to rotate via the first gear 821. Furthermore, by controlling the rotation angle of the first rotating member 823, the rotation angle of the rotating tube 4 can be controlled.

[0059] The above-mentioned telescopic drive assembly 83 includes a second gear 831, a second rotating member 833 and a second gear transmission mechanism 832; wherein, the second gear 831 can be coaxially fixed on the outer wall of the sliding sleeve 5; the second rotating member 833 can be a knob, which can be rotatably set on the shell 81; the second gear transmission mechanism 832 is set inside the shell 81, and is used to transmit and connect the second gear 831 and the second rotating member 833.

[0060] Similarly, the main function of the second gear transmission mechanism 832 is to realize the transmission between the second rotating member 833 and the second gear 831, and its specific gear transmission structure can also be flexibly designed according to needs.

[0061] For example, in one embodiment, the second gear transmission mechanism 832 may include a first telescopic drive gear 8321 rotatably set on the shell 81, the first telescopic drive gear 8321 is meshed and connected with the second gear 831, and the first telescopic drive gear 8321 may also be coaxially fixed with a second telescopic drive gear 8322, the second telescopic drive gear 8322 may be a bevel gear, and the second telescopic drive gear 8322 is meshed and connected with a third telescopic drive gear 8323, the third telescopic drive gear 8323 may be rotatably set on the inner wall of the shell 81, and the third telescopic drive gear 8323 may be coaxially fixed with the above-mentioned second rotating member 833 through a rotating shaft.

[0062] Thus, when the second rotating member 833 is rotated, the second rotating member 833 can drive the second gear 831 to rotate via the third telescopic drive gear 8323, the second telescopic drive gear 8322, and the first telescopic drive gear 8321, thereby rotating the sliding sleeve 5. Furthermore, by controlling the rotation angle of the second rotating member 833, the rotation angle of the sliding sleeve 5 can be controlled.

[0063] On this basis, in order to realize the axial sliding of the sliding sleeve 5 along the optical fiber 1, an external thread section 51 is further provided on the outer wall of the sliding sleeve 5, and an internal thread section 811 for cooperating with the external thread section 51 is correspondingly provided on the inner wall of the shell 81. The external thread section 51 and the internal thread section 811 are both coaxially arranged with the sliding sleeve 5.

[0064] The sliding sleeve 5 can form a threaded connection with the internal thread section 811 on the inner wall of the shell 81 through the external thread section 51. Therefore, when the sliding sleeve 5 starts to rotate under the action of the second gear 831, the sliding sleeve 5 will also move along the internal thread section 811 on the inner wall of the shell 81, thereby realizing axial movement on the positioning tube 2.

[0065] It should be noted that the aforementioned rotational drive assembly 82 and telescopic drive assembly 83 respectively utilize a first rotating member 823 and a second rotating member 833 as their drive sources, which effectively means that the rotating tube 4 and the sliding sleeve 5 can be driven and controlled manually. However, in other embodiments, the aforementioned first rotating member 823 and the second rotating member 833 can also be replaced with motors (e.g., servo motors) to achieve an electrically driven operating mode. The specific choice can be freely made according to needs.

[0066] See also Figure 6-7 The laser vaporization ablation surgical device also includes an endoscope 9 arranged on one side of the shell 81; the endoscope 9 can provide visual images and cooperate with the above-mentioned manipulator 8 and laser fiber sheath to complete the laser ablation surgery.

[0067] In this embodiment, the endoscope 9 includes an endoscope body 91, which can be fixedly mounted on a side of the housing 81 facing away from the fiber lock 7. To connect the endoscope body 91 to the housing 81, an endoscope interface 812 can be provided on the housing 81. The endoscope body 91 can be connected to the endoscope interface 812, and a sealing gasket 11 can be provided inside the endoscope interface 812. Furthermore, a fiber sheath channel 911 can be provided within the endoscope body 91 for inserting the aforementioned laser fiber sheath.

[0068] An endoscope sheath 92 is coaxially fixedly provided on the side of the endoscope body 91 away from the shell 81. The endoscope sheath 92 is arranged on the outside of the laser fiber sheath, and an optical channel 932, an illumination channel 941 and a water vapor inlet channel 951 are formed between the endoscope sheath 92 and the laser fiber sheath. The optical channel 932 and the water vapor inlet channel 951 can both extend to the end of the endoscope sheath 92, that is, to the target tissue position.

[0069] On this basis, the endoscope body 91 is further provided with an optical imaging component 93, a light source interface 94 and a water-gas interface 95.

[0070] The optical imaging assembly 93 can be any existing lens module used in endoscopes, and can typically include an electronic endoscope and / or a fiber endoscope. An electronic endoscope can replace the traditional optical fiber 1 with an image sensor to transmit images and directly output digital signals, while a fiber endoscope uses a glass fiber bundle to transmit images and requires an eyepiece 931 for observation. Since the optical imaging assembly 93 of the endoscope is a prior art in the field and its specific structure is not the focus of the present invention, it will not be described in detail here.

[0071] On this basis, the optical imaging component 93 can be connected to the above-mentioned optical channel 932 through the passage on the endoscope body 91, so as to facilitate the acquisition of visible images at the target tissue.

[0072] The above-mentioned light source interface 94 can be used to connect an optical cable, and the light source interface 94 can be connected to the above-mentioned lighting channel 941 through a passage on the endoscope body 91. The lighting channel 941 can be connected to the above-mentioned optical channel 932 to provide lighting conditions at the target tissue position to facilitate the acquisition of visible images.

[0073] The water / gas interface 95 is provided on the endoscope body 91 and is connected to the water / gas inlet channel 951. During surgery, the water / gas interface 95 cooperates with the water / gas inlet channel 951 to allow water / gas to pass through and reach the front end of the endoscope sheath 92, facilitating flushing, cooling, or air intake of target tissue.

[0074] It should be noted that, since the endoscope 9 is divided into rigid endoscopes and soft endoscopes, when the above-mentioned endoscope 9 is a rigid endoscope, the above-mentioned endoscope sheath 92 can be made of a rigid material; and when the above-mentioned endoscope 9 is a soft endoscope, the above-mentioned endoscope sheath 92 can be made of a soft or semi-rigid material.

[0075] In this embodiment, the laser vaporization ablation surgical device further includes an outer sheath 10 disposed on one side of the endoscope body 91. The outer sheath 10 can be sleeved onto the outside of the endoscope sheath 92 and is detachably fixedly connected to the side of the endoscope body 91 away from the housing 81. The outer sheath 10 and the endoscope sheath 92 can be coaxially arranged, and the gap between them can form a water vapor exhaust channel 971. A water vapor exhaust port 97 can also be fixedly disposed on the outer sheath 10, and the water vapor exhaust port 97 is connected to the water vapor exhaust channel 971.

[0076] Thus, when the operating environment is a water environment, the water vapor outlet 97 cooperates with the water vapor outlet channel 971 to drain water; when the operating environment is a cavity environment, the water vapor outlet 97 cooperates with the water vapor outlet channel 971 to exhaust smoke.

[0077] In order to better understand the present invention, the following Figure 1-7 The technical solution of the present invention is described in detail: During actual operation, when the outer sheath 10 reaches the target tissue through puncture and natural channels under image or visual guidance, the above-mentioned laser fiber sheath, manipulator 8 and endoscope 9 can be completely connected to the outer sheath, and the position of the light-emitting end face of the optical fiber 1 can be fixed, and then external equipment (such as a laser, display, light source, flushing and perfusion pump or negative pressure aspirator, etc.) can be connected.

[0078] After completing the above preparations, the tip 32 on the reflector column 3 can be inserted into the center of the target tissue. After the laser energy is excited, the reflector column 3 can reflect the laser through the reflective bevel 31, causing the laser to exit from the side of the optical fiber 1 beam. At this time, the laser fiber sheath can be controlled by the operator 8 to rotate 360 ​​degrees, forming a circular energy distribution irradiation body with the depth of the optical fiber 1 light output diameter. This energy distribution irradiation body can form a cylindrical (fan-shaped or directional) body for coagulation or ablation of the target tissue based on the amount of laser energy and the rotation speed. Finally, the laser fiber sheath can be controlled by the operator 8 to move inward from the target tissue to achieve the cylindrical (fan-shaped or directional) depth required by the clinical situation, thereby completing the coagulation and ablation of the target tissue.

[0079] Based on the above explanation, it can be seen that, depending on clinical needs, this laser vaporization ablation surgical device can perform both coagulation ablation and vaporization ablation, as well as both directional ablation and cylindrical ablation. Under visual conditions, it is easy to completely remove tumor tissue, while also facilitating morphological observation and measurement of ablation cavities, providing clinicians with a clearer basis for judgment.

[0080] At the same time, the laser vaporization ablation surgical device can be used in water and air (smoke) environments, and can adapt to various tumor environments and application conditions. It can enter through puncture and along natural channels into lesions such as the lungs, liver, kidneys, and prostate, and perform resection treatment of tumors and benign prostatic hyperplasia.

[0081] Moreover, when using this laser vaporization ablation surgical device, doctors can choose light sources of different wavelengths, such as blue laser, green laser, thulium laser, semiconductor laser, etc. for targeted treatment according to the characteristics of different biological tissues and clinical needs. There is no need for dedicated energy platforms and auxiliary equipment, which greatly saves medical costs.

[0082] In addition, the laser vaporization ablation surgical device has a simple structure, does not require complex optical splitting, attenuation devices, and spatial optical path design, and has good stability.

[0083] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 this application. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0084] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0085] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A laser fiber sheath, characterized in that: include: Optical fiber, used to transmit and emit laser light; A positioning member, disposed outside the optical fiber, for fixing the emission angle of the optical fiber; a reflector, close to the emitting end of the optical fiber, and a reflective slope is provided on one side of the reflector close to the emitting end, wherein the reflective slope is inclined relative to the laser emission direction and is used to reflect the laser emitted by the optical fiber; and The rotating member has one end connected to the reflecting member and is used to drive the reflecting member to rotate with the laser emission direction as the axis.

2. The laser fiber sheath according to claim 1, wherein: The positioning member is a positioning tube, and the positioning tube is sleeved on the outside of the optical fiber.

3. The laser fiber sheath according to claim 1, wherein: The rotating member is a rotating tube, which is sleeved on the outside of the optical fiber and rotates with the optical fiber; one end of the rotating tube is connected to the reflective member, and a light-transmitting area is provided on the rotating tube in the laser reflection direction facing the reflective slope.

4. The laser fiber sheath according to claim 3, wherein: The rotating tube comprises: A first tube section is sleeved on the outside of the optical fiber and is rotatably arranged with the optical fiber; and The second tube section is made of a light-transmitting material and is coaxially fixedly arranged on an end of the first tube section close to the reflector for connecting to the reflector.

5. The laser fiber sheath according to claim 1, wherein: The laser fiber sheath further comprises: An axial movable member is movably sleeved on the outside of the optical fiber and connected to one end of the rotating member, and is used to drive the rotating member and the reflecting member to move along the axial direction of the optical fiber.

6. The laser fiber sheath according to claim 5, characterized in that: The laser fiber sheath further comprises: The optical fiber fixing part is fixedly arranged on the axial movable part, and the optical fiber fixing part is provided with a clamping mechanism for clamping and fixing the optical fiber.

7. The laser fiber sheath according to claim 1, wherein: The angle between the reflecting slope and the laser emission direction is 44-46 degrees.

8. The laser fiber sheath according to claim 1, wherein: A tip for inserting into target tissue is provided on a side of the reflective member away from the reflective slope.

9. A laser vaporization ablation surgical device, characterized in that: It comprises an operator and a laser fiber sheath as described in any one of claims 1 to 8, wherein the operator is respectively connected to the rotating part and the axial movable part for controlling the rotation and axial movement of the emitted laser.

10. The laser vaporization ablation surgical device according to claim 9, characterized in that: The operator includes: case; a rotation drive assembly, disposed on the housing and in transmission connection with the rotating member, for driving the rotating member to rotate; and The telescopic driving assembly is arranged on the housing and is in transmission connection with the axial movable member, and is used for driving the axial movable member to move along the axial direction of the optical fiber.

11. The laser vaporization ablation surgical device according to claim 9, characterized in that: Also included is an endoscope comprising: An endoscope body is fixedly arranged on one side of the manipulator and is provided with an optical fiber sheath channel for passing the laser optical fiber sheath; An endoscope sheath is sleeved on the outside of the laser fiber sheath and fixedly connected to the endoscope body, and an optical channel, an illumination channel, and a water vapor inlet channel are formed between the endoscope sheath and the laser fiber sheath; an optical imaging assembly, disposed on the endoscope body and connected to the optical channel, for providing a visible image; a light source interface, provided on the endoscope body and connected to the lighting channel, for providing a light source; and The water and gas interface is provided on the endoscope body and is connected to the water and gas inlet channel for water or air intake.

12. The laser vaporization ablation surgical device according to claim 11, characterized in that: It also includes an outer sheath tube, which is sleeved on the outside of the endoscope sheath and fixedly connected to the endoscope body; a water vapor discharge channel is formed between the outer sheath tube and the endoscope sheath, and a water vapor discharge port connected to the water vapor discharge channel is also fixed on the outer sheath tube.

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