Annular light spot ablation device based on thulium-doped laser
By designing a thulium-doped laser annular spot ablation device, and using a beam splitter group to convert the beam into an annular spot, the problem of laser treatment of circumferential lesions in a confined space was solved, achieving safe and efficient laser treatment and power monitoring.
Patent Information
- Application Number
- CN202511931877.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-19
- Publication Date
- 2026-03-20
AI Technical Summary
Existing thulium-doped lasers are mainly axial beams, which make it difficult to effectively treat circumferential lesions in human orifices or tubes in confined spaces. Furthermore, the lack of laser power monitoring methods leads to insufficient treatment safety.
A ring-shaped ablation device based on thulium-doped laser is designed. A ring beam is formed by collimating lens and conical lens, and the beam is converted into a ring spot by beam splitter. Laser power is monitored by combining pyroelectric material to achieve direct treatment of circumferential lesions in holes or tubes.
It enables direct laser treatment of lesions around human orifices or ducts, ensuring treatment safety, avoiding laser interference in non-lesion areas, and monitoring laser power in real time to guarantee treatment safety.
Smart Images
Figure CN121704072A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of laser treatment, and particularly relates to a ring-shaped light spot ablation device based on thulium-doped laser. BACKGROUND
[0002] Laser medical treatment is increasingly applied to the treatment of various diseases. Water is the main component in biological tissues, and water molecules have high absorption efficiency to thulium-doped laser. Thulium-doped laser can be applied to human tissue ablation and lithotripsy through laser biological heat effect. In tissue ablation treatment, when micron thulium-doped laser acts on biological tissues with high water content, water molecules absorb laser energy and rapidly heat up. Water molecules vaporize, and then tissue carbonization and ablation are generated, so as to achieve the treatment effect.
[0003] However, the existing thulium-doped laser is mainly axial light, and in some thulium-doped laser treatment processes, such as ophthalmology, dentistry, blood vessels, urinary tract and the like, due to the narrow space, it is not easy to adjust the direction of the axial light, so that the circumferential lesions (i.e. lateral lesions) of the above-mentioned holes or pipelines cannot be directly treated by laser. SUMMARY
[0004] In view of the above defects or improvement needs of the prior art, the application provides a ring-shaped light spot ablation device based on thulium-doped laser, which aims to not only directly treat the circumferential lesions of the above-mentioned holes or pipelines, but also monitor the laser power in real time, so as to ensure the safety of thulium-doped laser treatment.
[0005] To achieve the above-mentioned purpose, the application provides a ring-shaped light spot ablation device based on thulium-doped laser, which comprises a thulium-doped laser, a collimating lens, a conical lens, a reflection and transmission module and a base; The thulium-doped laser is used for emitting thulium-doped laser, and the thulium-doped laser forms a ring-shaped light beam after passing through the collimating lens and the conical lens in sequence; The reflection and transmission module comprises a fixed shaft, a sleeve and a plurality of beam splitters. The fixed shaft is coaxially arranged with the ring-shaped light beam to avoid the position of the ring-shaped light beam. The sleeve is coaxially sleeved on one end of the fixed shaft. The plurality of beam splitters are uniformly and spacedly arranged along the circumference of the sleeve, and are all obliquely installed on the outer peripheral wall of the sleeve. The ring-shaped light beam forms a ring-shaped light spot after being reflected by the plurality of beam splitters; The base is coaxially fixed on the other end of the fixed shaft. A pyroelectric material is arranged on the base. The pyroelectric material is used for receiving the laser transmitted by the plurality of beam splitters and detecting the power.
[0006] Optionally, the plurality of beam splitters are divided into a plurality of beam splitter groups, the plurality of beam splitter groups are arranged at intervals along the axial direction of the sleeve, and the plurality of beam splitters of each beam splitter group are arranged at intervals along the circumferential direction of the sleeve.
[0007] Optionally, the sleeve comprises a plurality of cylinder bodies arranged in sequence, and the sliding fit between adjacent cylinder bodies is used to adjust the length of the sleeve, and the plurality of beam splitters of each beam splitter group are located on the corresponding cylinder body.
[0008] Optionally, the sliding stroke of each cylinder body relative to the adjacent cylinder body is 5-10 mm.
[0009] Optionally, each beam splitter is detachably inserted into the outer circumferential wall of the sleeve.
[0010] Optionally, one side of the beam splitter is hinged to the outer circumferential wall of the sleeve to adjust the inclination angle of the beam splitter relative to the sleeve.
[0011] Optionally, the transmittance and reflectance ratio of each beam splitter to thulium-doped laser is 1:1.
[0012] Optionally, the annular light spot ablation device further comprises a glass shell, and the thulium-doped laser, the collimating lens, the conical lens, the reflection and transmission module, and the base are all mounted in the glass shell.
[0013] Optionally, the wavelength of the thulium-doped laser emitted by the thulium-doped laser is 2 microns.
[0014] Optionally, the thulium-doped laser is a pulsed laser or a continuous laser.
[0015] The above improved technical features can be combined with each other as long as they do not conflict with each other.
[0016] Overall, compared with the prior art, the above technical solutions conceived by the present application have the following beneficial effects: For the annular light spot ablation device based on thulium-doped laser provided by the embodiment of the present application, since the thulium-doped laser is used to emit thulium-doped laser, the thulium-doped laser forms an annular light beam after passing through the collimating lens and the conical lens in sequence, so that the divergent light emitted by the thulium-doped laser is changed into a collimated light beam through the collimating lens, and the collimated light beam is changed into an annular light beam after passing through the conical lens.
[0017] Further, the sleeve is coaxially sleeved on one end of the fixed shaft, the plurality of beam splitters are uniformly and spacedly arranged along the circumference of the sleeve, and are all obliquely installed on the outer circumferential wall of the sleeve, after the annular light beam passes through the plurality of obliquely arranged beam splitters, a part of the thulium-doped laser is reflected by the beam splitter to form an annular light spot, so that a part of the laser is changed from the axial light to the circumferential annular light spot, thereby conveniently performing laser treatment on the circumferential lesion of the human body hole or pipeline without adjusting the direction of the axial light. And another part of the thulium-doped laser is transmitted through the beam splitter and continues to transmit until it hits the pyroelectric material along the axial direction, which not only can avoid the thulium-doped laser from continuing to transmit along the axial direction to affect the non-lesion area, but also can combine the beam splitter to monitor the laser power in real time, avoid the fluctuation or over-high of the laser power, thereby ensuring the safety of the thulium-doped laser treatment.
[0018] That is, the annular light spot ablation device based on thulium-doped laser provided by the embodiment of the present application can not only directly perform laser treatment on the circumferential lesion of the hole or pipeline, but also can monitor the laser power in real time, thereby ensuring the safety of the thulium-doped laser treatment. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a structural schematic view of the annular light spot ablation device based on thulium-doped laser provided by the embodiment of the present application.
[0020] In all the drawings, the same reference signs represent the same technical features, specifically: 1, thulium-doped laser; 2, collimating lens; 3, conical lens; 4, reflection and transmission module; 41, fixed shaft; 42, sleeve; 421, barrel; 43, beam splitter; 5, base. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.
[0022] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0023] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.
[0024] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0025] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0026] Embodiment: Figure 1 is a structural schematic diagram of a ring-shaped light spot ablation device based on thulium-doped laser provided by an embodiment of the present application, as shown in Figure 1 The ring-shaped light spot ablation device includes a thulium-doped laser 1, a collimating lens 2, a conical lens 3, a reflection and transmission module 4 and a base 5.
[0027] The thulium-doped laser 1 is used for emitting thulium-doped laser, and the thulium-doped laser sequentially passes through the collimating lens 2 and the conical lens 3 to form a ring-shaped light beam.
[0028] The reflection and transmission module 4 comprises a fixed shaft 41, a sleeve 42 and a plurality of beam splitters 43, the fixed shaft 41 is coaxially arranged with the ring-shaped light beam to avoid the ring-shaped light beam, the sleeve 42 is coaxially sleeved on one end of the fixed shaft 41, the plurality of beam splitters 43 are uniformly and spacedly arranged along the circumference of the sleeve 42, and are all obliquely installed on the outer circumferential wall of the sleeve 42, and the ring-shaped light beam forms a ring-shaped light spot after being reflected by the plurality of beam splitters 43.
[0029] The base 5 is coaxially fixed on the other end of the fixed shaft 41, and the base 5 is provided with a pyroelectric material, and the pyroelectric material is used for receiving the laser transmitted by the plurality of beam splitters 43 and detecting the power.
[0030] For the ring-shaped light spot ablation device based on thulium-doped laser provided by the embodiment of the present application, since the thulium-doped laser 1 is used for emitting thulium-doped laser, and the thulium-doped laser sequentially passes through the collimating lens 2 and the conical lens 3 to form a ring-shaped light beam, the divergent light emitted by the thulium-doped laser 1 is changed into a collimated light beam through the collimating lens 2, and the collimated light beam is changed into a ring-shaped light beam after passing through the conical lens 3.
[0031] Further, the sleeve 42 is coaxially sleeved on one end of the fixed shaft 41, the plurality of beam splitters 43 are uniformly and spacedly arranged along the circumference of the sleeve 42, and are all obliquely installed on the outer circumferential wall of the sleeve 42, and a part of the thulium-doped laser is reflected by the beam splitters 43 to form a ring-shaped light spot after the ring-shaped light beam passes through the plurality of obliquely arranged beam splitters 43, so that a part of the laser is changed from the axial light to the circumferential ring-shaped light spot, thereby conveniently performing laser treatment on the circumferential lesion of the human body hole or pipeline without adjusting the direction of the axial light. And the other part of the thulium-doped laser continues to transmit after being transmitted by the beam splitter 43, and then hits the pyroelectric material along the axis, which not only can avoid the thulium-doped laser from continuing to transmit along the axis to affect the non-lesion area, but also can combine the beam splitter 43 to monitor the laser power in real time, so as to avoid the fluctuation or over-high of the laser power, thereby ensuring the safety of the thulium-doped laser treatment.
[0032] That is, the ring-shaped light spot ablation device based on thulium-doped laser provided by the embodiment of the present application not only can directly perform laser treatment on the circumferential lesion of the above-mentioned hole or pipeline, but also can monitor the laser power in real time, thereby ensuring the safety of the thulium-doped laser treatment.
[0033] It is easy to understand that the fixed shaft 41 plays a role of fixing and integrating the sleeve 42 and the base 5, and the fixed shaft 41 does not interfere with the transmission of the ring-shaped light beam.
[0034] Exemplarily, the base 5 can be made of metal.
[0035] In one implementation of the present application, the transmission and reflection ratio of each beam splitter 43 for the thulium-doped laser can be 1:1 (i.e. the beam splitter 43 can be a semi-transparent half mirror), at this time, half of the thulium-doped laser is reflected to form an annular light spot, and the other half of the thulium-doped laser is transmitted to the base 5.
[0036] Exemplarily, the beam splitter 43 is fused quartz, the thickness is not greater than 0.5 mm, and the inclination angle relative to the sleeve 42 can be 45°.
[0037] Continuing to refer to Figure 1 The plurality of beam splitters 43 are divided into a plurality of beam splitter groups, the plurality of beam splitter groups are arranged at intervals along the axial direction of the sleeve 42, and the plurality of beam splitters 43 of each beam splitter group are uniformly arranged at intervals along the circumferential direction of the sleeve 42.
[0038] In the above embodiment, by arranging a plurality of beam splitter groups at intervals along the axial direction of the sleeve 42, a plurality of annular light spots arranged at intervals along the axial direction of the sleeve 42 can be formed, thereby increasing the application range of the device.
[0039] Exemplarily, the number of beam splitter groups can be 3-5, which is not limited by the present application.
[0040] Further, the sleeve 42 comprises a plurality of barrel bodies 421 arranged in sequence, and the adjacent two barrel bodies 421 are slidingly fitted to adjust the length of the sleeve 42, and the plurality of beam splitters 43 of each beam splitter group are located on the corresponding barrel body 421.
[0041] It is easy to understand that by arranging the sleeve 42 as a plurality of barrel bodies 421 arranged in sequence, not only can each beam splitter group be correspondingly arranged and installed on the corresponding barrel body 421, but also the distance between the adjacent two beam splitter groups can be conveniently adjusted by sliding the barrel body 421, thereby adjusting the distance between the adjacent two annular light spots, thereby further increasing the application range of the device.
[0042] Exemplarily, the sliding stroke of each barrel body 421 relative to the adjacent barrel body 421 can be 5-10 mm.
[0043] In addition, from top to bottom of the sleeve 42, the outer diameter of each barrel body 421 decreases in sequence, i.e. the lower barrel body 421 is slidingly inserted into the upper barrel body 421. Correspondingly, a protrusion is arranged on the outer wall of the lower barrel body 421, and a strip-shaped groove is arranged on the inner wall of the upper barrel body 421 along the axial direction, and the protrusion is slidingly inserted into the corresponding strip-shaped groove. And the two ends of the strip-shaped groove are inserted into limiting blocks, thereby limiting the protrusion and avoiding the lower barrel body 421 from being separated from the upper barrel body 421.
[0044] In one implementation of the present application, each beam splitter 43 is detachably inserted on the outer circumferential wall of the sleeve 42.
[0045] In the above embodiment, the beam splitter 43 can be selected by dismounting, that is, the beam splitter 43 with the required transmittance and reflectance ratio can be selected by dismounting, so as to control the power of the annular light spot.
[0046] For example, the outer wall of the sleeve 42 is provided with a plurality of mounting grooves arranged at intervals, and each beam splitter 43 is detachably inserted in the corresponding mounting groove.
[0047] In another implementation of the present application, one side of the beam splitter 43 is hinged on the outer circumferential wall of the sleeve 42 to adjust the inclination angle of the beam splitter 43 relative to the sleeve 42.
[0048] In the above embodiment, the inclination angle of each beam splitter 43 can be adjusted by hinged mounting, so as to adjust the reflection angle of the thulium-doped laser, and further adjust the position of the annular light spot in the axial direction.
[0049] It should be noted that after the angle adjustment of the beam splitter 43 is completed, the beam splitter 43 needs to be locked to avoid accidental rotation of the beam splitter 43 during use and affect the treatment effect.
[0050] In the present embodiment, the annular light spot ablation device further comprises a glass shell, and the thulium-doped laser 1, the collimating lens 2, the conical lens 3, the reflection and transmission module 4 and the base 5 are all mounted in the glass shell. The glass shell plays a role of covering and protecting the thulium-doped laser 1, the collimating lens 2, the conical lens 3, the reflection and transmission module 4 and the base 5, so that the thulium-doped laser 1, the collimating lens 2, the conical lens 3, the reflection and transmission module 4 and the base 5 are all packaged in the glass shell, and the glass shell does not affect the transmission of the laser.
[0051] In addition, the wavelength of the thulium-doped laser emitted by the thulium-doped laser 1 can be 2 microns, and the thulium-doped laser with a wavelength of 2 microns has better treatment effect.
[0052] For example, the thulium-doped laser 1 can be a pulsed laser or a continuous laser.
[0053] In summary, the present application provides an annular light spot ablation device based on thulium-doped laser. By using the combination of the conical lens 3 and the beam splitter 43, the thulium-doped laser can be output as multiple annular light spots in the circumferential direction of the device. In the treatment process of the thulium-doped laser, the thulium-doped laser is output in the axial direction of the device, which cannot directly irradiate the side wall of the tissue, and the overall volume of the device for realizing circumferential irradiation is reduced. The thulium-doped laser is emitted from the axial direction to the circumferential direction, multiple annular light spots can be output simultaneously according to the needs, and the device has the characteristics of wide clinical application range, more convenient use, better clinical effect, etc.
[0054] It is to be understood that the above description is intended to be illustrative and not restrictive. Many other embodiments will be apparent to those of skill in the art upon reading the above description. The scope of the application should therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with their full scope of equivalents. The disclosure of all articles and references referred to herein are incorporated by reference in their entirety.
Claims
1. A ring-shaped ablation device based on a thulium-doped laser, characterized in that, The annular spot ablation device includes a thulium-doped laser (1), a collimating lens (2), a conical lens (3), a reflection and transmission module (4), and a base (5). The thulium-doped laser (1) is used to emit thulium-doped laser light, which forms a ring beam after passing through the collimating lens (2) and the conical lens (3) in sequence. The reflection and transmission module (4) includes a fixed axis (41), a sleeve (42) and multiple beam splitters (43). The fixed axis (41) is coaxially arranged with the annular beam to avoid obstructing the annular beam. The sleeve (42) is coaxially sleeved on one end of the fixed axis (41). The multiple beam splitters (43) are evenly spaced along the circumference of the sleeve (42) and are all inclinedly installed on the outer peripheral wall of the sleeve (42). The annular beam forms an annular spot after being reflected by the multiple beam splitters (43). The base (5) is coaxially fixed to the other end of the fixed shaft (41). A pyroelectric material is provided on the base (5). The pyroelectric material is used to receive the laser transmitted by the multiple beam splitters (43) and detect the power.
2. The annular spot ablation device based on thulium-doped laser according to claim 1, characterized in that, The plurality of beam splitters (43) are divided into a plurality of beam splitter groups, the plurality of beam splitter groups are arranged at intervals along the axial direction of the sleeve (42), and the plurality of beam splitters (43) of each beam splitter group are arranged at uniform intervals along the circumference of the sleeve (42).
3. The annular spot ablation device based on thulium-doped laser according to claim 2, characterized in that, The sleeve (42) includes a plurality of cylindrical bodies (421) arranged sequentially, with adjacent cylindrical bodies (421) slidingly engaged to adjust the length of the sleeve (42), and a plurality of beam splitters (43) of each beam splitter group are located on the corresponding cylindrical body (421).
4. The annular spot ablation device based on thulium-doped laser according to claim 3, characterized in that, The sliding stroke of each of the cylinders (421) relative to the adjacent cylinders (421) is 5-10 mm.
5. The annular spot ablation device based on thulium-doped laser according to claim 1, characterized in that, Each of the beam splitters (43) is detachably inserted into the outer peripheral wall of the sleeve (42).
6. The annular spot ablation device based on thulium-doped laser according to claim 1, characterized in that, One side of the beam splitter (43) is hinged to the outer peripheral wall of the sleeve (42) to adjust the tilt angle of the beam splitter (43) relative to the sleeve (42).
7. The annular spot ablation device based on thulium-doped laser according to claim 1, characterized in that, The transmission and reflection ratio of the thulium-doped laser by each of the beam splitters (43) is 1:
1.
8. A ring-shaped ablation device based on a thulium-doped laser according to any one of claims 1-7, characterized in that, The annular spot ablation device also includes a glass shell, and the thulium-doped laser (1), the collimating lens (2), the conical lens (3), the reflection and transmission module (4) and the base (5) are all installed inside the glass shell.
9. A ring-shaped ablation device based on a thulium-doped laser according to any one of claims 1-7, characterized in that, The wavelength of the thulium-doped laser emitted by the thulium-doped laser (1) is 2 micrometers.
10. A ring-shaped ablation device based on a thulium-doped laser according to any one of claims 1-7, characterized in that, The thulium-doped laser (1) is a pulsed laser or a continuous laser.