CN218247377U - Laser ablation device - Google Patents
Laser ablation device Download PDFInfo
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- CN218247377U CN218247377U CN202222572321.1U CN202222572321U CN218247377U CN 218247377 U CN218247377 U CN 218247377U CN 202222572321 U CN202222572321 U CN 202222572321U CN 218247377 U CN218247377 U CN 218247377U
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Abstract
The utility model discloses a laser ablation device, which comprises a catheter, an ablation optical fiber and a reflecting piece, wherein the light emitting end of the ablation optical fiber is arranged in the catheter; the reflecting piece comprises a reflecting part and a driving part, the reflecting part is used for changing the propagation direction of laser emitted by the ablation optical fiber, the driving part is connected with the reflecting part and the catheter, the reflecting part is arranged in the catheter, and the driving part is used for driving the reflecting part to do linear motion and/or rotary motion. Order about reflection part rectilinear motion through the drive division, can realize the relative pipe rectilinear movement in light-emitting position of reflection part, order about reflection part rotary motion through the drive division, the light-emitting position pipe that can rectilinear reflection part is rotatory, can be relative pipe rectilinear movement and rotatory reflection part for laser can be as required directive to the preset place, makes laser can be applicable to the melting of the pathological change tissue of arbitrary shape.
Description
Technical Field
The utility model relates to a laser ablation technical field especially relates to a laser ablation device.
Background
In the laser ablation process, the ablation optical fiber is inserted into a human body, laser generated by a laser is transmitted to a to-be-ablated area in the human body through the optical fiber, laser energy is converted into heat energy, and the to-be-ablated area is heated to enable tissue cells to die. Laser ablation devices typically consist of multiple components including a connector, an optical fiber, a cooling jacket, and a light redirecting portion. The laser is transmitted to the light steering part from the laser through the optical fiber, then the light transmitted along the axial direction of the optical fiber is converted into the light which is transmitted along the axial direction of the optical fiber through the light steering part, and then the light is scattered to the tissue to be ablated to complete laser ablation.
Publication No. CN211750041U discloses a device for laser interstitial thermotherapy, comprising a connector, an optical fiber, a sleeve, and a light-turning portion, wherein the connector is connected to a proximal end of the optical fiber, a proximal end of the sleeve is connected to a distal end of the optical fiber, the light-turning portion is connected to a distal end of the sleeve, and the light-turning portion comprises a conical portion whose diameter gradually increases from the proximal end to the distal end, so that light propagating along a long axial direction of the optical fiber is turned into radial emission. The laser light is emitted to the light diverting part through the optical fiber, and the light diverting part scatters the laser light outwards along the radial direction of the sleeve.
When the device of the laser interstitial thermotherapy system works, in order to carry out conformal ablation on lesion tissues in any shapes, an expensive surgical robot needs to be arranged outside a human body, the device is driven to move by the surgical robot, so that laser emitted by the laser ablation device points to a preset area, the problem of accurate positioning of the surgical robot needs to be considered, a series of problems such as magnetic resonance compatibility and the like need to be considered, the complexity of the whole set of equipment is undoubtedly improved, and the use cost of a patient is increased.
SUMMERY OF THE UTILITY MODEL
In view of this, it is necessary to provide a laser ablation apparatus, which solves the technical problem in the prior art that the laser ablation apparatus needs to be controlled by a surgical robot to move, which results in complicated equipment.
In order to achieve the above technical object, the present invention provides a laser ablation apparatus, including:
a conduit;
the light outlet end of the ablation optical fiber is arranged in the catheter;
the reflecting piece comprises a reflecting part and a driving part, the reflecting part is used for changing the propagation direction of laser emitted by the ablation optical fiber, the driving part is connected to the reflecting part and the catheter, the reflecting part is arranged in the catheter, and the driving part is used for driving the reflecting part to do linear motion and/or rotary motion.
In one embodiment, the driving part is used for driving the reflecting part to move linearly along the axial direction of the catheter and/or rotate around the axis of the catheter.
In one embodiment, the driving portion includes a rotating portion and a linear moving portion, an output shaft of the rotating portion is disposed coaxially with the guide tube and connected to the reflecting portion for driving the reflecting portion to rotate along an axis of the guide tube, the linear moving portion has a fixed end and an output end, the fixed end of the linear moving portion is connected to the guide tube, the output end of the linear moving portion is connected to the rotating portion and disposed along an axial direction of the guide tube, and the linear moving portion is configured for driving the rotating portion and the reflecting portion to move linearly along the axial direction of the guide tube.
In one embodiment, one end of the conduit is closed, a light-transmitting region for emitting laser is formed at the closed end, and the driving part is disposed on a side of the reflecting part away from the closed end of the conduit.
In one embodiment, the device further comprises a sleeve, the sleeve is arranged in the guide pipe and is arranged along the axial direction of the guide pipe, and an annular cavity is formed between the sleeve and the guide pipe.
In one embodiment, the cooling device further comprises a spacing layer, the spacing layer is arranged in the guide pipe along the axial direction of the guide pipe, and the spacing layer divides an internal cavity of the guide pipe into a liquid inlet flow channel for the entering of cooling liquid and a liquid outlet flow channel for the discharging of the cooling liquid.
In one embodiment, the spacer layer is disposed within the sleeve or the annular cavity.
In one embodiment, the temperature measuring device further comprises a temperature measuring piece, wherein the temperature measuring piece is provided with a temperature measuring part used for measuring temperature, and the temperature measuring part is arranged in the guide pipe.
In one embodiment of the present invention, the spacing layer is axially provided with an optical fiber channel and a temperature measuring channel, the optical fiber channel and the catheter are coaxially arranged, the ablation optical fiber is arranged in the optical fiber channel, and the temperature measuring element is arranged in the temperature measuring channel.
In one embodiment, the output shaft of the rotating part is provided with a through hole, the ablation optical fiber and the temperature measuring part are arranged in the through hole, and the ablation optical fiber and the catheter are coaxially arranged.
In one embodiment, the reflector further includes a connecting portion, one end of the connecting portion is connected to the output shaft of the rotating portion, and the other end of the connecting portion is connected to the reflecting portion, and the connecting portion is capable of avoiding the laser emitted by the ablation optical fiber.
In one embodiment, the connecting portion includes a first connecting section, a second connecting section and a third connecting section that are connected in sequence, the first connecting section is arranged along the radial direction of the guide pipe, one end of the first connecting section is connected with the output shaft of the rotating portion, the second connecting section is arranged along the axial direction of the guide pipe and is arranged on one side of the reflecting portion, which is far away from the light emitting direction, and the third connecting section is connected with one side of the reflecting portion, which is far away from the driving portion.
Compared with the prior art, the beneficial effects of the utility model include: when the lesion tissue is ablated by the laser ablation device, the laser ablation device is moved to be close to the lesion tissue, then laser is transmitted into the catheter through the ablation optical fiber, the laser is emitted from the ablation optical fiber and is emitted to the reflecting part, the emitting direction of the laser is changed by the reflecting part through reflection, the laser is emitted out of the catheter under the reflection of the reflecting part and is emitted to the lesion tissue, and the lesion tissue is ablated by the laser; through setting up the drive division, the drive division can order about reflecting part rectilinear motion and/or rotary motion, do rectilinear motion through drive division control reflecting part, make the laser shoot the position and can make relative pipe rectilinear motion, do rotary motion through drive division control reflecting part, make the laser shoot the position and can rotate relative pipe, through the removal and the rotation of laser shoot the position, make the laser energy shoot to predetermined place as required, make the laser energy be applicable to the ablation of the pathological change tissue of arbitrary shape, and need not to dispose surgical robot on the basis of laser ablation device, a series of problems such as avoiding surgical robot to surgical robot positioning accuracy, magnetic resonance compatibility, the complexity of equipment has been reduced, patient's use cost has been reduced.
Drawings
Fig. 1 is a schematic structural view of a laser ablation apparatus according to an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of the light exit end of the laser ablation device of FIG. 1;
fig. 3 is a schematic view of a partial structure of an ablation optical fiber, a reflector, a sleeve, a spacer layer and a temperature measuring element in a laser ablation apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a laser ablation device according to another embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is an enlarged partial schematic view of the light exit end of the laser ablation of FIG. 5;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 4;
fig. 8 is a schematic structural view of a catheter at the end of the catheter, an ablation optical fiber, a reflection member, a driving portion, a sleeve, and a temperature measuring portion in a laser ablation apparatus according to another embodiment of the present invention.
Description of reference numerals:
a catheter 1;
a liquid inlet flow passage 1a;
a liquid outlet flow passage 1b;
a first pipe 11;
a second tubular body 12;
an ablation optical fiber 2;
a reflector 3;
a reflection unit (31);
a reflective surface 311;
a drive section 32;
the rotating portion 321;
an output shaft 3211;
a linear moving section 322;
a connecting portion 33;
the first connection section 331;
a second connection segment 332;
a third connection segment 333;
a sleeve 4;
an annular cavity 4a;
a spacer layer 5;
a temperature measuring part 6;
a temperature measuring part 61.
Detailed Description
The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
Referring to fig. 1 to 8, the present invention provides a laser ablation device, which is a medical device for laser ablation of diseased tissue, and the laser ablation device can perform conformal ablation of diseased tissue of any shape.
It should be noted that the laser ablation device of the present invention can be used in, but not limited to, medical equipment, and can also be applied to other equipment requiring laser ablation. In the present invention, the laser ablation device is only applied to the medical device for illustration, and the principle of the laser ablation device applied to other types of devices is substantially the same as the principle of the laser ablation device applied to the medical device, which is not repeated herein.
As shown in fig. 1, in one embodiment, the laser ablation apparatus provided by the present invention comprises a catheter 1, an ablation fiber 2 and a reflector 3, wherein the light emitting end of the ablation fiber 2 is disposed in the catheter 1; the reflecting member 3 includes a reflecting portion 31 for changing the propagation direction of the laser light emitted from the ablation fiber 2, and a driving portion 32 connected to the reflecting portion 31 and the catheter 1, wherein the reflecting portion 31 is disposed in the catheter 1, and the driving portion 32 is used for driving the reflecting portion 31 to move linearly and/or rotationally.
When the lesion tissue is ablated by the laser ablation device, the laser ablation device is moved to be close to the lesion tissue, then laser is transmitted into the catheter 1 through the ablation optical fiber 2, the laser is emitted from the ablation optical fiber 2 and is emitted to the reflecting part 31, the emitting direction of the laser is changed by the reflecting part 31 through reflection, the laser is emitted out of the catheter 1 under the reflection of the reflecting part 31 and is emitted to the lesion tissue, and the lesion tissue is ablated by the laser; through setting up drive division 32, drive division 32 can order about reflecting part 31 linear motion and/or rotary motion, it is linear motion to control reflecting part 31 through drive division 32, make the laser emit the position and can make relative pipe 1 linear motion, it is rotary motion to control reflecting part 31 through drive division 32, make the laser emit the position and can rotate relative pipe 1, through the removal and the rotation of laser emit the position, make the laser can shoot to preset place as required, make the laser can be applicable to the ablation of the pathological change tissue of arbitrary shape, and need not to dispose the surgical robot on the basis of laser ablation device, a series of problems such as avoid surgical robot to operative person positioning accuracy, magnetic resonance compatibility, etc., the complexity of laser ablation equipment has been reduced, patient's use cost has been reduced.
As shown in fig. 2 and 5, in one embodiment, the driving part 32 is used to drive the reflecting part 31 to move linearly along the axial direction of the catheter 1 and/or to move rotationally around the axis of the catheter 1.
It is understood that the driving portion 32 may be a combination of a micro linear motor (not shown) and a micro rotating motor (not shown), the rotating motor is fixed at a moving end of the linear motor, and an output end of the rotating motor is connected to the reflecting portion 31; the driving part 32 may also be a combination of a rotating motor (not shown in the figure) and an electric telescopic rod (not shown in the figure), wherein a housing of the rotating motor is fixed to the catheter 1, and the electric telescopic rod is connected to an output shaft of the rotating motor and connected to the reflecting part 31, so as to drive the reflecting part 31 to realize linear motion and rotary motion.
The driving part 32 controls the reflecting part 31 to do linear motion along the axial direction of the catheter 1, so that the laser emitting position can move linearly along the axial direction of the catheter 1, and the driving part 32 controls the reflecting part 31 to do rotary motion around the axial line of the catheter 1, so that the laser emitting position can rotate around the axial line of the catheter 1, and the moving direction and the rotating direction of the reflecting part 31 are defined.
As shown in fig. 8, in one embodiment, the driving part 32 includes a rotating part 321 and a linear moving part 322, an output shaft 3211 of the rotating part 321 is disposed coaxially with the catheter 1 and connected to the reflecting part 31 for driving the reflecting part 31 to rotate along the axis of the catheter 1, the linear moving part 322 has a fixed end and an output end, the fixed end of the linear moving part 322 is connected to the catheter 1, the output end is connected to the rotating part 321 and disposed along the axial direction of the catheter 1, and the linear moving part 322 is for driving the rotating part 321 and the reflecting part 31 to move linearly along the axial direction of the catheter 1.
The rotation portion 321 rotates the reflection portion 31 along the axis of the catheter 1, and the linear movement portion 322 moves the rotation portion 321 and the reflection portion 31 in the axial direction of the catheter 1.
It is understood that the rotating part 321 may be a micro motor, a micro piezoelectric motor, etc.; the linear moving part 322 may be a micro linear motor, a micro cylinder, a micro electric telescopic rod, etc.
As shown in fig. 2 and fig. 3, in one embodiment, the ablation fiber 2 is disposed along the axial direction of the catheter 1, one side surface of the reflection portion 31 is a reflection surface 311, the reflection surface 311 is disposed toward the light exit end of the ablation fiber 2, the reflection surface 311 forms an angle of 45 ° with the axial direction of the catheter 1, and the reflection surface 311 is configured to receive laser light output by the light exit end of the ablation fiber 2 and reflect the received laser light along the radial direction of the catheter 1.
The ablation optical fiber 2 transmits laser along the axial direction of the catheter 1, the laser is emitted to the reflecting surface 311 along the axial direction of the catheter 1, and the reflecting surface 311 forming an included angle of 45 degrees with the catheter 1 reflects the laser by 90 degrees, so that the laser is emitted along the radial direction of the catheter 1.
As shown in fig. 5 and fig. 6, in one embodiment, one end of the tube 1 is closed, the closed end is formed with a light-transmitting region for emitting laser, and the driving portion 32 is disposed on a side of the reflecting portion 31 away from the closed end of the tube 1.
It is understood that the driving portion 32 may be disposed on a side of the reflection portion 31 far from the closed end of the tube 1, or may be disposed on a side of the reflection portion 31 close to the closed end of the tube 1. It will be appreciated that the closed end of the conduit 1 may be tapered, spherical, elliptical, etc.
In this embodiment, the driving portion 32 is disposed on the side of the reflection portion 31 away from the closed end of the catheter 1, so that the reflection portion 31 can be disposed close to the closed end of the catheter 1, the distance between the end surface of the closed end of the catheter 1 and the reflection portion 31 can be effectively reduced, when laser ablation is performed, the catheter 1 can be aligned to the lesion tissue by only inserting a small distance into the laser emitting position, the insertion depth of the catheter 1 can be reduced, and the injury to the patient can be reduced.
As shown in fig. 2, 6 and 7, in one embodiment, the laser ablation device further comprises a sleeve 4, the sleeve 4 is disposed in the catheter 1 and arranged along the axial direction of the catheter 1, and an annular cavity 4a is formed between the sleeve 4 and the catheter 1. The annular cavity 4a and the sleeve 4 can be used for passing power lines and other cables, the annular cavity 4a can also be used for leading cooling liquid into or out of the conduit 1, and the sleeve 4 can also be used for leading cooling liquid into or out of the conduit 1.
It will be appreciated that support blocks, notched rings, etc. may be provided within the conduit 1 to support the sleeve 4 such that the sleeve 4 is coaxially disposed with the conduit 1.
As shown in fig. 2 and 3, in one embodiment, the laser ablation device further includes a spacing layer 5, the spacing layer 5 is disposed in the catheter 1 along the axial direction of the catheter 1, and the spacing layer 5 divides the internal cavity of the catheter 1 into a liquid inlet flow channel 1a for the inlet of the cooling liquid and a liquid outlet flow channel 1b for the outlet of the cooling liquid.
It can be understood that the spacing layer 5 can be arranged in the sleeve 4 and divides the cavity in the sleeve 4 into a liquid inlet flow passage 1a for the inlet of the cooling liquid and a liquid outlet flow passage 1b for the outlet of the cooling liquid; the spacing layer 5 can also be arranged in the annular cavity 4a, and divides the annular cavity 4a into a liquid inlet flow channel for the entering of cooling liquid and a liquid outlet flow channel for the discharging of the cooling liquid; the spacing layer 5 can also be arranged in the sleeve 4 and the annular cavity 4a at the same time, so that a liquid inlet flow passage and a liquid outlet flow passage are formed in both the sleeve 4 and the annular cavity 4a.
As shown in fig. 1, 2, 4 and 5, in one embodiment, the catheter 1 includes a first tube 11 and a second tube 12 coaxially disposed, the first tube 11 is hollow and has two open ends, the second tube 12 is hollow and has one open end and the other closed end, the open end of the second tube 12 is connected to one end of the first tube 11, the reflection portion 31 is disposed in the second tube 12, the sleeve 4 is disposed in the first tube 11 and surrounds the inner wall of the first tube 11 to form an annular cavity 4a, and the spacer 5 is disposed in the first tube 11.
It can be understood that the first tube 11 and the second tube 12 may be both made of a light-transmitting material, or only the second tube 12 may be made of a light-transmitting material; the light-transmitting material can be sapphire, quartz glass and other materials; it is understood that the first tube 11 and the second tube 12 can be fixedly connected or detachably connected.
The catheter 1 is formed by the first tube 11 and the second tube 12 which are connected, the first tube 11 and the second tube 12 can be formed in a split mode, materials of the first tube 11 and the second tube 12 can be selected according to needs, the sleeve 4, the spacing layer 5 and other parts are arranged in the first tube 11, the first tube 11 is provided with openings at two ends, the sleeve 4 and the spacing layer 5 can be installed in the first tube 11 more easily, compared with a tube with one closed end, the processing difficulty of equipment can be reduced.
In one embodiment, the first tube 11 and the second tube 12 are removably connected by threads.
The first pipe body 11 and the second pipe body 12 are detachably connected through threads, and the first pipe body 11 and the second pipe body 12 can be connected in a sealing manner through threads and are convenient to detach.
In one of the embodiments, shown in figures 2 and 6, the spacer layer 5 is built into the sleeve 4 or the annular cavity 4a.
When the spacing layer 5 is arranged in the sleeve 4, the spacing layer 5 forms a liquid inlet flow channel 1a and a liquid outlet flow channel 1b in the sleeve 4, at the moment, the driving part 32 is arranged at one side of the reflecting part 31 close to the closed end of the guide pipe 1, cooling liquid enters the guide pipe 1 through the liquid inlet flow channel 1a in the sleeve 4 and exchanges heat with the guide pipe 1 and the reflecting part 3, and the cooling liquid after heat exchange flows out from the liquid outlet flow channel 1b of the sleeve 4; when the spacing layer 5 is arranged in the annular cavity 4a, the spacing layer 5 forms a liquid inlet flow channel and a liquid outlet flow channel at intervals in the annular cavity 4a, the driving part 32 is arranged on one side, away from the closed end of the guide pipe 1, of the reflecting part 31 and is arranged in the sleeve 4, cooling liquid enters through the liquid inlet flow channel 1a in the annular cavity 4a and exchanges heat with the guide pipe 1 and the reflecting part 3, and the cooling liquid after heat exchange flows out from the liquid outlet flow channel of the annular cavity 4a.
As shown in fig. 2, 3 and 6, in one embodiment, the laser ablation device further comprises a temperature measuring member 6, the temperature measuring member 6 is provided with a temperature measuring part 61 for measuring temperature, and the temperature measuring part 61 is arranged in the catheter 1.
It is understood that the temperature measuring member 6 can be various types of temperature sensors, and in one embodiment, the temperature measuring member 6 is an optical fiber temperature sensor, and the temperature measuring part 61 is a temperature measuring optical fiber of the optical fiber temperature sensor.
Through setting up temperature measurement spare 6, temperature measurement spare 6 can measure the temperature of parts such as reflection part 31, and when parts such as reflection part 3 that temperature measurement spare 6 measured was too high, let in the coolant liquid in the pipe 1 to lower the temperature to reflection part 31 and pipe 1, avoid the high temperature of reflection part 31 and pipe 1.
As shown in FIGS. 2 and 3, in one embodiment, the spacing layer 5 is axially provided with an optical fiber channel and a temperature measuring channel, the optical fiber channel is coaxially arranged with the catheter 1, the ablation optical fiber 2 is arranged in the optical fiber channel, and the temperature measuring part 6 is arranged in the temperature measuring channel.
It can be understood that the optical fiber channel and the temperature measuring channel can be communicated so that the ablation optical fiber 2 and the temperature measuring part 61 share one channel; the optical fiber channel and the temperature measuring channel can also be arranged at intervals, so that the ablation optical fiber 2 and the temperature measuring part 61 fixed on the optical fiber channel and the temperature measuring channel are arranged at intervals.
The ablation optical fiber 2 is arranged in the optical fiber channel, the temperature measuring part 6 is arranged in the temperature measuring channel, the ablation optical fiber and the temperature measuring part 6 are fixed relative to the sleeve 4, and when cooling liquid flows through the sleeve 4, the ablation optical fiber 2 in the interlayer 5 in the sleeve 4 can be cooled.
As shown in fig. 6, in one embodiment, the output shaft 3211 of the rotating portion 321 has a through hole, the ablation fiber 2 and the temperature measuring portion 61 are disposed in the through hole, and the ablation fiber 2 is disposed coaxially with the catheter 1.
When the rotating part 321 is arranged on the side of the reflecting part 31 far away from the closed end of the catheter 1, the rotating part 321 is arranged in the advancing direction of the ablation optical fiber 2 and the temperature measuring part 6, in order to avoid the ablation optical fiber 2 and the temperature measuring part 6, a through hole is arranged on an output shaft 3211 of the rotating part 321, so that the ablation optical fiber 2 and the temperature measuring part 61 can pass through the rotating part 321 through the through hole, and the output shaft 3211 of the rotating part 321 can rotate and move without interfering with the ablation optical fiber 2 and the temperature measuring part 61; if the optical fiber channel and the ablation optical fiber 2 are not coaxial with the catheter 1, in the rotating process of the reflecting part 31, the reflecting surface 311 obliquely arranged on the reflecting part 31 rotates, the position of the laser contacting the reflecting surface 311 moves relative to the reflecting surface 31, so that the position of the laser contacting the reflecting surface 31 changes along the axial direction of the catheter 1, and further the emitting position of the laser on the catheter 1 moves along the axial direction of the catheter 1, in the application, the optical fiber channel and the ablation optical fiber 2 are coaxially arranged with the catheter 1, so that the rotation axes of the ablation optical fiber 2 and the reflecting part 31 are coaxially arranged, when the driving part 32 drives the reflecting part 31 to rotate, the position of the laser contacting the reflecting surface 311 emitted by the ablation optical fiber 2 does not move, and the laser emitting position on the catheter 1 does not move along the axial direction of the catheter 1 when the reflecting part 31 rotates.
It can be understood that the linear moving portion 322 can be disposed at one side of the catheter 1 to deviate from the ablation fiber 2 and the temperature measuring portion 61, or a through hole for the ablation fiber 2 and the temperature measuring portion 61 to pass through can be formed in the linear moving portion 322, so that the ablation fiber 2 and the temperature measuring portion 61 can smoothly pass through the driving portion 32.
As shown in fig. 6, in one embodiment, the reflector 3 further includes a connecting portion 33, one end of the connecting portion 33 is connected to the output shaft 3211 of the rotating portion 321, and the other end is connected to the reflecting portion 31, and the connecting portion 33 can avoid the laser emitted from the ablation fiber 2.
When the driving portion 32 is disposed on the side of the reflection portion 31 away from the closed end of the catheter 1, the ablation optical fiber 2 and the temperature measuring element 6 pass through the output shaft 3211 of the rotation portion 321, and at this time, the reflection surface 311 of the reflection portion 31 faces the output shaft 3211 of the rotation portion 321, so as to avoid interference of the output shaft 3211 with the laser beam due to the direct connection of the output shaft 3211 of the rotation portion 321 with the reflection surface 311 of the reflection portion 31, and to avoid interference of the laser beam by the output shaft 3211.
It is understood that the connection portion 33 may connect the peripheral wall of the reflection portion 31, or connect the side of the reflection portion 31 far from the reflection surface 311.
As shown in fig. 6, in one embodiment, the connection portion 33 includes a first connection segment 331, a second connection segment 332, and a third connection segment 333 connected in sequence, the first connection segment 331 is disposed along a radial direction of the catheter 1 and one end of the first connection segment is connected to the output shaft 3211 of the rotation portion 321, the second connection segment 332 is disposed along an axial direction of the catheter 1 and is disposed on a side of the reflection portion 31 departing from the light emitting direction, and the third connection segment 333 is connected to a side of the reflection portion 31 far away from the driving portion 32.
The output shaft 3211 is connected with the reflecting part 31 by arranging the first connecting section 331, the second connecting section 332 and the third connecting section 333, and the first connecting section 331 is arranged along the radial direction of the catheter 1, so that the first connecting section 331 is prevented from interfering with the ablation optical fiber 2 and the temperature measuring part 61 when being connected with the output shaft 3211; the second connecting section 332 is arranged along the axial direction of the catheter 1 and connected with the other end of the first connecting section 331, so that the second connecting section 332 can avoid the laser emitted by the ablation optical fiber 2, and the second connecting section 332 is arranged on one side of the reflecting part 31, which is far away from the light emitting direction, so that the second connecting section 332 can be prevented from interfering with the laser reflected by the reflecting part 31; the connection of the second connecting section 332 to the reflecting portion 31 is achieved by the third connecting section 333.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (12)
1. A laser ablation device, comprising:
a catheter (1);
the light outlet end of the ablation optical fiber (2) is arranged in the catheter (1);
the reflecting piece (3) comprises a reflecting part (31) used for changing the propagation direction of laser emitted by the ablation optical fiber (2) and a driving part (32) connected to the reflecting part (31) and the catheter (1), the reflecting part (31) is arranged in the catheter (1), and the driving part (32) is used for driving the reflecting part (31) to do linear motion and/or rotary motion.
2. The laser ablation device according to claim 1, wherein the driving part (32) is used for driving the reflecting part (31) to move linearly along the axial direction of the catheter (1) and/or to move rotationally around the axis of the catheter (1).
3. The laser ablation device according to claim 2, wherein the driving unit (32) comprises a rotating unit (321) and a linear moving unit (322), an output shaft (3211) of the rotating unit (321) is disposed coaxially with the catheter (1) and connected to the reflecting unit (31) for driving the reflecting unit (31) to rotate along the axis of the catheter (1), the linear moving unit (322) has a fixed end and an output end, the fixed end of the linear moving unit (322) is connected to the catheter (1), the output end is connected to the rotating unit (321) and disposed along the axial direction of the catheter (1), and the linear moving unit (322) is configured for driving the rotating unit (321) and the reflecting unit (31) to move linearly along the axial direction of the catheter (1).
4. The laser ablation device according to claim 3, wherein one end of the catheter (1) is closed and the closed end is formed with a light-transmitting region for emitting laser light, and the driving part (32) is disposed on a side of the reflecting part (31) away from the closed end of the catheter (1).
5. A laser ablation device according to claim 3, further comprising a sleeve (4), wherein the sleeve (4) is arranged in the catheter (1) and arranged along the axial direction of the catheter (1), and an annular cavity (4 a) is formed between the sleeve (4) and the catheter (1).
6. The laser ablation device according to claim 5, further comprising a spacing layer (5), wherein the spacing layer (5) is arranged in the catheter (1) along the axial direction of the catheter (1), and the spacing layer (5) divides the inner cavity of the catheter (1) into a liquid inlet flow channel (1 a) for the entering of cooling liquid and a liquid outlet flow channel (1 b) for the discharging of the cooling liquid.
7. Laser ablation device according to claim 6, characterized in that the spacer layer (5) is built into the sleeve (4) or the annular cavity (4 a).
8. The laser ablation device according to claim 6, further comprising a thermometric member (6), the thermometric member (6) having a thermometric section (61) for measuring temperature, the thermometric section (61) being built in the catheter (1).
9. The laser ablation device according to claim 8, wherein the spacing layer (5) is axially provided with an optical fiber channel and a temperature measuring channel, the optical fiber channel and the catheter (1) are coaxially arranged, the ablation optical fiber (2) is arranged in the optical fiber channel, and the temperature measuring part (6) is arranged in the temperature measuring channel.
10. The laser ablation device according to claim 8, wherein the output shaft (3211) of the rotating part (321) is provided with a through hole, the ablation optical fiber (2) and the temperature measuring part (61) are arranged in the through hole, and the ablation optical fiber (2) is arranged coaxially with the catheter (1).
11. The laser ablation device according to claim 4, wherein the reflector (3) further includes a connecting portion (33), one end of the connecting portion (33) is connected to the output shaft (3211) of the rotating portion (321), and the other end is connected to the reflector (31), and the connecting portion (33) is capable of avoiding the laser light emitted from the ablation fiber (2).
12. The laser ablation device according to claim 11, wherein the connecting portion (33) includes a first connecting section (331), a second connecting section (332), and a third connecting section (333) connected in sequence, the first connecting section (331) is disposed along a radial direction of the catheter (1) and one end of the first connecting section is connected to the output shaft (3211) of the rotating portion (321), the second connecting section (332) is disposed along an axial direction of the catheter (1) and is disposed on a side of the reflecting portion (31) facing away from a light emitting direction, and the third connecting section (333) is connected to a side of the reflecting portion (31) away from the driving portion (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222572321.1U CN218247377U (en) | 2022-09-26 | 2022-09-26 | Laser ablation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222572321.1U CN218247377U (en) | 2022-09-26 | 2022-09-26 | Laser ablation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218247377U true CN218247377U (en) | 2023-01-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113876417A (en) * | 2021-10-15 | 2022-01-04 | 巨翊科技（上海）有限公司 | Laser ablation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113876417A (en) * | 2021-10-15 | 2022-01-04 | 巨翊科技（上海）有限公司 | Laser ablation system |
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