Annular light spot medical laser optical fiber and medical laser instrument

Abstract

The utility model belongs to the technical field of medical laser optical fibers, and discloses an annular light spot medical laser optical fiber and a medical laser instrument. The annular light spot medical laser optical fiber is provided with an input end and an output end, the output end is made of a conical single-component quartz material, and laser can be coupled to the annular light spot medical laser optical fiber from the input end and emitted out in an annular light spot mode from the output end. And the output end adopts a conical structure, so that the laser can be finally emitted in the form of an annular light spot, the laser can uniformly irradiate the surface of the tubular tissue, a better heating effect is achieved in a larger area, the operation efficiency and the medical effect are improved, and the dependence on the operation skill of a doctor in the medical process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical laser fiber technology, and in particular to a ring-spot medical laser fiber and a medical laser device. Background Technology

[0002] The application of laser fiber in the medical field demonstrates broad prospects and enormous development potential. With its significant advantages such as high precision, low invasiveness, and flexibility, laser fiber has become an important tool in many medical fields, including surgical treatment, oncology treatment, cosmetic surgery, ophthalmic surgery, and dental treatment. In surgical treatment, laser fiber enables precise tissue cutting, coagulation hemostasis, and ablation, significantly improving the accuracy and safety of surgery while reducing surgical trauma and patient recovery time. In oncology treatment, laser fiber, through photodynamic therapy or direct laser irradiation, can precisely destroy tumor tissue, providing patients with new, safer, and more effective treatment options. Furthermore, laser fiber also plays an important role in cosmetic surgery, ophthalmic surgery, and dental treatment, bringing patients safer and more effective treatment options and greatly improving medical outcomes and the patient's recovery experience.

[0003] However, existing laser fibers can only directly heat the tissue located at the front of the output end, which limits surgical operations. This requires doctors to manually rotate or move the laser fiber to irradiate a larger area. Especially in the closure of tubular tissues, it is highly limited by the surgeon's skills and is not conducive to achieving high surgical efficiency and better medical results.

[0004] Based on the above, there is an urgent need for a ring-shaped spot medical laser fiber and medical laser device to solve the aforementioned technical problems. Utility Model Content

[0005] One objective of this invention is to provide a ring-shaped spot medical laser fiber that can achieve high surgical efficiency and superior medical results in the treatment of tubular tissues.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A ring-shaped medical laser fiber has an input end and an output end. The output end is a conical single-component quartz material. Laser light can be coupled from the input end to the ring-shaped medical laser fiber and emitted from the output end in a ring-shaped spot.

[0008] Preferably, the apex angle of the output terminal is not less than 60° and not more than 65°.

[0009] Preferably, the annular spot medical laser fiber includes a core, a cladding, a polyimide coating, and a polytetrafluoroethylene protective layer. The cladding is integrally formed on the outer peripheral surface of the core, and the polyimide coating and the polytetrafluoroethylene protective layer are disposed on the cladding from the inside out, excluding at least a portion of the output end.

[0010] The beneficial effects of the annular spot medical laser fiber of this invention are as follows: the output end adopts a conical structure, which enables the laser to be emitted in an annular spot, thereby uniformly irradiating the surface of tubular tissue and achieving a better heating effect over a larger area, improving the efficiency and medical effect of surgery, and reducing the reliance on the surgeon's skills in the medical process.

[0011] Another objective of this invention is to provide a medical laser device that can achieve high surgical efficiency and superior medical results in the treatment of tubular tissues.

[0012] To achieve this objective, the present invention adopts the following technical solution:

[0013] A medical laser device includes a quartz head and the aforementioned annular spot medical laser fiber, wherein the output end of the annular spot medical laser fiber is inserted and installed inside the quartz head.

[0014] Preferably, the medical laser device further includes a polyetheretherketone (PEEK) protective layer, which is disposed on the outside of the annular spot medical laser fiber.

[0015] Preferably, one end of the quartz head is closed and the other end is open, and the polyetheretherketone protective layer can be inserted into the quartz head from the opening and bonded to the quartz head.

[0016] Preferably, the inner wall of the quartz head opening is provided with a stepped structure, which can abut against the polyetheretherketone protective layer along the length direction of the annular spot medical laser fiber.

[0017] Preferably, the quartz head has a large diameter portion and a small diameter portion, the inner diameter of the large diameter portion is larger than that of the small diameter portion to form the stepped structure, and the large diameter portion is located closer to the opening than the small diameter portion.

[0018] Preferably, the input end of the annular spot medical laser fiber is equipped with an SMA905 connector.

[0019] Preferably, the medical laser device further includes a laser that can generate laser light, and the laser light can be coupled from the input end of the annular spot medical laser fiber to the annular spot medical laser fiber.

[0020] The beneficial effects of this medical laser device are: it enables the laser to be emitted in a ring-shaped spot, thereby uniformly irradiating the surface of tubular tissue and achieving a better heating effect over a larger area, improving the efficiency and medical effect of surgery, and reducing the reliance on the surgeon's skills in the medical process. Attached Figure Description

[0021] Figure 1 This is a front view of the annular spot medical laser fiber provided by this utility model;

[0022] Figure 2 This is a partially enlarged view of the output end of the annular spot medical laser fiber provided by this utility model;

[0023] Figure 3 This is a cross-sectional view of the input end of a ring-shaped medical laser fiber;

[0024] Figure 4 This is an assembly cross-sectional view of the annular spot medical laser fiber and the quartz head;

[0025] Figure 5 This is a cross-sectional view of the quartz head in this utility model;

[0026] Figure 6 This is an assembly diagram of the SMA905 connector and ceramic ferrule;

[0027] Figure 7 This is a schematic diagram of the ceramic insert.

[0028] In the picture:

[0029] 101. Fiber core; 102. Cladding layer; 103. Polyimide coating layer; 104. Polytetrafluoroethylene protective layer;

[0030] 11. Input terminal; 12. Output terminal;

[0031] 2. Polyetheretherketone protective layer;

[0032] 3. Quartz head; 31. Stepped structure;

[0033] 4. SMA905 connector; 5. Ceramic ferrule. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] The following is based on the appendix Figure 1 To be continued Figure 7 This invention introduces the annular spot medical laser fiber and medical laser device provided by this utility model.

[0039] like Figures 1 to 3 As shown, in this embodiment, the annular spot medical laser fiber has an input end 11 and an output end 12. The input end 11 can be connected to a laser generator, and the laser generated by the laser generator can be coupled from the input end 11 to the annular spot medical laser fiber and emitted from the output end 12. The output end 12 adopts a conical structure, so that the laser can be emitted in an annular spot, thereby uniformly irradiating the surface of tubular tissue and achieving a better heating effect over a larger area, improving the efficiency and medical effect of the operation, and reducing the dependence of the medical process on the surgeon's skills.

[0040] Specifically, such as Figure 2As shown, the conical structure used in the output end 12 can be a relatively standard conical shape. For example, an inclined surface is formed from the outer surface of the laser fiber towards the axis of the laser fiber, and the radius of the laser fiber is uniformly reduced along a direction close to the end of the output end 12 until a relatively sharp end is formed; this is one type of conical structure described in this invention. This structure can diffuse to form a relatively standard annular light spot, achieving better heating and surgical effects for tubular assemblies. Preferably, the apex angle of the conical structure is not less than 60° and not greater than 65°, which can achieve a larger heating area and avoid an increased risk of tubular tissue puncture failure due to an excessively sharp apex angle.

[0041] Optionally, in some other embodiments, the conical structure used for the output end 12 can also be a frustum shape with a smaller end. Compared to the more standard conical shape described above, the frustum shape allows the output end 12 of the laser fiber to form a smaller end face, while still allowing some laser light to be output from the end face along the axial direction of the laser fiber, ultimately forming a combination of annular and dot-shaped light spots. In this case, the dot-shaped light spot is located at the center of the annular light spot, which does not negatively affect the heating effect of the annular light spot. Furthermore, the processing accuracy and processing cost are lower than those of the more standard conical shape described above, and it also belongs to the conical structure described in this utility model.

[0042] Of course, in some embodiments, in addition to a flat conical surface, a bulging or concave conical surface can also be used. When the conical surface of the conical structure is bulging, it can achieve a better divergence effect on the laser, thereby achieving a larger irradiation area within a limited operating space. When the conical surface of the conical structure is concave, it can achieve a better focusing effect on the laser, which is beneficial to improving the heating efficiency at the annular spot irradiation point. Of course, due to limitations in manufacturing processes and costs, in actual use, in addition to a more obvious annular spot, local spots or weaker annular or other shaped spots may also be formed. However, these spot shapes cannot meet the required heating effect. Therefore, this invention does not limit this, and it is not ruled out that in some embodiments, annular spots and other weaker spots may appear simultaneously.

[0043] More specifically, such as Figure 3As shown, in this embodiment, the diameter of the annular spot medical laser fiber is Φ550μm, including a core 101, a cladding 102, a polyimide coating layer 103, and a polytetrafluoroethylene protective layer 104. The cladding 102 is integrally formed on the outer peripheral surface of the core 101, and the refractive index of the cladding 102 is lower than that of the core 101, thereby achieving total internal reflection. Exemplarily, a germanium-doped core 101 can be combined with a pure cladding 102, or a pure core 101 can be combined with a fluorine-doped cladding 102, or a germanium-doped core 101 can be combined with a fluorine-doped cladding 102. These combinations all ensure that the refractive index of the cladding 102 is lower than that of the core 101, and are all within the scope of protection of this invention. Preferably, the cladding 102 is made of fluorine-doped quartz, whose low-friction properties help the optical fiber move smoothly in catheters or other interventional devices, reducing damage and resistance caused by friction. Furthermore, the non-adhesive properties of fluorine-doped silica prevent the fiber surface from adhering to blood, tissue, or other biological substances, thus maintaining the cleanliness and functional integrity of the fiber. Simultaneously, fluorine-doped silica exhibits excellent biocompatibility, reducing adverse reactions between the fiber and human tissue and ensuring the safety and effectiveness of the surgical procedure.

[0044] Continue to refer to Figure 3 As shown, the polyimide coating layer 103 and the polytetrafluoroethylene protective layer 104 are disposed on the cladding 102 from the inside out, covering at least a portion of the output end 12. This achieves both high efficiency of laser output at the output end 12 and sufficient protection. Polyimide is a polymer material with extremely high heat resistance, capable of maintaining stable performance in high-temperature environments. In medical optical fibers, the polyimide coating layer 103 effectively resists damage to the optical fiber from high-temperature environments, ensuring the stability and reliability of the optical fiber during high-temperature surgery or treatment. Furthermore, the polyimide coating layer 103 possesses excellent mechanical properties such as high strength and high modulus. This allows the optical fiber to withstand various external impacts and compressions during use without easily being damaged, improving the durability and service life of the optical fiber and helping to ensure the stability and safety of the optical fiber during surgery or treatment. The PTFE protective layer 104 has good corrosion resistance, tensile strength and wear resistance. It can withstand strong acids and alkalis, water and various organic solvents, which can ensure the long-term stable operation of laser optical fibers in harsh environments and prevent them from being corroded by corrosive media. This helps to extend the service life of laser optical fibers and reduce failures and maintenance costs caused by chemical corrosion and mechanical damage.

[0045] This utility model also provides a medical laser device, which includes the aforementioned annular spot medical laser fiber. The output end 12 of the annular spot medical laser fiber is inserted and installed inside a quartz cap 3, which provides good protection and prevents the sharp part of the output end 12 from being damaged or scratched during transit.

[0046] Optionally, the medical laser device also includes a polyetheretherketone (PEEK) protective layer 2, which is applied to the outer side of the annular spot medical laser fiber. The PEEK protective layer 2 has an inner diameter of 0.095 mm and an outer diameter of 1.3 mm, and possesses extremely high tensile strength (up to 100 MPa or more) and flexural strength, as well as a low coefficient of friction. These properties enable the PEEK protective layer 2 to withstand significant mechanical stress, protecting the laser fiber from physical damage, facilitating the installation of the laser fiber, and improving throughput.

[0047] Specifically, such as Figure 4 , Figure 5 As shown, the quartz end cap 3 is closed at one end and open at the other, with an inner diameter of 1.3 mm and an outer diameter of 1.85 mm. The polyetheretherketone (PEEK) protective layer 2 can be inserted into the quartz end cap 3 through the opening and bonded to it, thereby sealing and protecting the annular spot medical laser fiber within the PEEK protective layer 2 and the quartz end cap 3, preventing liquid from damaging the annular spot medical laser fiber through the gap between the PEEK protective layer 2 and the quartz end cap 3. Optionally, the outer surface of the closed end of the quartz end cap 3 is a hemispherical or equal-arc shape, which further facilitates the insertion of medical laser instruments.

[0048] More specifically, the inner wall of the opening of the quartz head 3 is provided with a stepped structure 31. The stepped structure 31 can abut against the polyetheretherketone protective layer 2 along the length direction of the annular spot medical laser fiber, thereby preventing the quartz head 3 from moving along the length direction of the annular spot medical laser fiber and causing collision damage between the output end 12 and the inner wall surface of the quartz head 3. Exemplarily, in this embodiment, the quartz head 3 is provided with a large-diameter portion and a small-diameter portion. The inner diameter of the large-diameter portion is larger than that of the small-diameter portion to form the stepped structure 31. The large-diameter portion is located closer to the opening than the small-diameter portion.

[0049] Furthermore, the medical laser device also includes a laser generator capable of generating laser light, which can be coupled from the input end 11 of the annular spot medical laser fiber to the annular spot medical laser fiber. Preferably, referring to... Figure 6 , Figure 7As shown, the input end 11 of the ring-spot medical laser fiber passes through the SMA905 connector 4 and its internal ceramic ferrule 5. The polyetheretherketone (PEEK) protective layer has been removed from the portion of the input end 11 near the ceramic ferrule 5 to facilitate coupling of the laser-emitted fiber into the ring-spot medical laser fiber. Through the SMA905 connector 4 and the ceramic ferrule, the input end 11 of the ring-spot medical laser fiber can be connected to the laser. Using both metal and ceramic materials, it offers higher power carrying capacity compared to other types of interfaces, is easy to install and connect, and requires no complex operation or maintenance.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A ring-shaped spot medical laser fiber, characterized in that, The annular spot medical laser fiber has an input end (11) and an output end (12). The output end (12) is a conical single-component quartz material. The laser can be coupled from the input end (11) to the annular spot medical laser fiber and emitted from the output end (12) in an annular spot.

2. The annular spot medical laser fiber according to claim 1, characterized in that, The apex angle of the output terminal (12) is not less than 60° and not greater than 65°.

3. The annular spot medical laser fiber according to claim 1, characterized in that, The annular spot medical laser fiber includes a core (101), a cladding (102), a polyimide coating (103), and a polytetrafluoroethylene protective layer (104). The cladding (102) is integrally formed on the outer peripheral surface of the core (101). The polyimide coating (103) and the polytetrafluoroethylene protective layer (104) are disposed on the cladding (102) from the inside out, except for at least a portion of the output end (12).

4. A medical laser device, characterized in that, It includes a quartz end cap (3) and an annular spot medical laser fiber as described in any one of claims 1-3, wherein the output end (12) of the annular spot medical laser fiber is inserted and installed inside the quartz end cap (3).

5. The medical laser device according to claim 4, characterized in that, The medical laser device also includes a polyetheretherketone protective layer (2), which is disposed on the outside of the annular spot medical laser fiber.

6. The medical laser device according to claim 5, characterized in that, One end of the quartz head (3) is closed and the other end is open. The polyether ether ketone protective layer (2) can be inserted into the quartz head (3) from the opening and bonded to the quartz head (3).

7. The medical laser device according to claim 6, characterized in that, The inner wall of the opening of the quartz head (3) is provided with a stepped structure (31), which can abut against the polyether ether ketone protective layer (2) along the length direction of the annular spot medical laser fiber.

8. The medical laser device according to claim 7, characterized in that, The quartz head (3) is provided with a large diameter portion and a small diameter portion. The inner diameter of the large diameter portion is larger than that of the small diameter portion to form the stepped structure (31). The large diameter portion is located closer to the opening than the small diameter portion.

9. The medical laser device according to claim 4, characterized in that, The input end (11) of the annular spot medical laser fiber is equipped with an SMA905 connector (4).

10. The medical laser device according to claim 4, characterized in that, The medical laser device also includes a laser that can generate laser light, which can be coupled from the input end (11) of the annular spot medical laser fiber to the annular spot medical laser fiber.

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