CN111812788B - Medical optical fiber assembly applied to high-power high-photon energy laser - Google Patents
Medical optical fiber assembly applied to high-power high-photon energy laser Download PDFInfo
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- CN111812788B CN111812788B CN202010716734.5A CN202010716734A CN111812788B CN 111812788 B CN111812788 B CN 111812788B CN 202010716734 A CN202010716734 A CN 202010716734A CN 111812788 B CN111812788 B CN 111812788B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4459—Ducts; Conduits; Hollow tubes for air blown fibres
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B2018/2205—Characteristics of fibres
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract
本发明涉及一种医用光纤组件，特别涉及一种应用于大功率高光子能量激光的医用光纤组件，解决了现有的医用光纤组件在传输波长小于500nm且功率大于100W的激光时，手术光纤极易因粘连在其出光端的术中人体有机物质导致光纤被烧毁，以致手术无法正常进行的技术问题。该医用光纤组件包括光纤、端面保护管以及热缩管；其特殊之处在于：所述光纤的远端从端面保护管的小端伸入，且不伸出端面保护管的大端；所述端面保护管的小端与光纤的远端外侧面固连；所述热缩管远端套装在光纤和端面保护管的外部，且热缩管远端和端面保护管的大端固连；所述热缩管与光纤之间形成环形缝隙流体通道；所述端面保护管小端与大端的过渡段处设置有流体过孔。
The invention relates to a medical optical fiber assembly, in particular to a medical optical fiber assembly applied to a high-power high-photon energy laser, which solves the problem that the existing medical optical fiber assembly can transmit a laser with a wavelength less than 500 nm and a power greater than 100 W. It is a technical problem that the optical fiber is easily burned due to the organic matter of the human body adhering to the light-emitting end during the operation, so that the operation cannot be carried out normally. The medical optical fiber assembly includes an optical fiber, an end-face protection tube and a heat-shrinkable tube; its special features are: the distal end of the optical fiber extends into the small end of the end-face protection tube and does not protrude from the large end of the end-face protection tube; the The small end of the end-face protection tube is fixedly connected with the outer surface of the distal end of the optical fiber; the distal end of the heat-shrinkable tube is sleeved on the outside of the optical fiber and the end-face protection tube, and the distal end of the heat-shrinkable tube and the big end of the end-face protection tube are fixedly connected; An annular gap fluid channel is formed between the heat shrinkable tube and the optical fiber; a fluid passage hole is provided at the transition section between the small end and the large end of the end face protection tube.
Description
Technical Field
The invention relates to a medical optical fiber component, in particular to a medical optical fiber component applied to high-power high-photon energy laser.
Background
When the existing medical optical fiber assembly is used for surgery, once the light-emitting end face of the optical fiber is contacted with soft tissues or adsorbed by suspended tissue scraps, laser can be absorbed by organic substances adhered to the light-emitting end of the optical fiber. If the laser wavelength transmitted by the optical fiber is less than 500nm, the adhered human organic substances can generate strong absorption and scattering effects on the high photon energy laser, and further cause the laser energy to be gathered at the light outlet end of the optical fiber and generate local high temperature. When the laser power exceeds 100W, the strong absorption can rapidly heat the light-emitting end face of the optical fiber, so that the optical fiber is burnt in an avalanche mode from the light-emitting end face to the optical fiber body, and a doctor cannot normally perform an operation.
Disclosure of Invention
The invention aims to provide a medical optical fiber component applied to high-power high-photon energy laser, which aims to solve the technical problem that when the conventional medical optical fiber component transmits laser with the wavelength less than 500nm and the power more than 100W, an operation optical fiber is easy to burn due to organic substances of human bodies in operation adhered to a light outlet end of the operation optical fiber, so that the operation cannot be normally carried out.
The technical scheme adopted by the invention is that the medical optical fiber component applied to the high-power high-photon energy laser comprises an optical fiber, an end face protection tube and a heat-shrinkable tube; it is characterized in that:
the far end of the optical fiber extends into the end face protection tube from the small end of the end face protection tube and does not extend out of the large end of the end face protection tube; the small end of the end face protection tube is fixedly connected with the outer side face of the far end of the optical fiber;
the far end of the heat shrinkable tube is sleeved outside the optical fiber and the end face protection tube, and is fixedly connected with the large end of the end face protection tube; an annular gap fluid channel is formed between the heat shrink tube and the optical fiber; and fluid through holes are formed in the transition sections of the small end and the large end of the end face protection pipe.
Furthermore, in order to generate an effective positive pressure area, the light-emitting end face of the optical fiber in the operation is not caused to contact with vaporized target soft tissue or adsorb suspended tissue powder in the operation to cause the burning of the light-emitting end of the optical fiber, the light-emitting end of the optical fiber can be close enough to the target soft tissue to achieve the required laser power density on the surface of the target soft tissue, and the distance between the light-emitting end face of the optical fiber and the large end face of the end face protection tube is 0.5 mm-2 mm.
Or the ratio of the distance between the light emergent end face of the optical fiber and the end face of the large end of the end face protection tube to the diameter of the inner hole of the large end of the end face protection tube is 0.5-1 times of the tangent value of the light receiving cone angle of the optical fiber. Set up like this, the big end terminal surface of end face protection tube just does not shade, satisfies the treatment demand, and the light-emitting terminal surface of optic fibre can not contact the tissue or adsorb suspension tissue bits moreover, the light-emitting terminal surface of protection optic fibre that can be better.
Further, in order to keep the relative distance between the light-emitting end face of the optical fiber and the end face of the large end of the end face protection tube unchanged, the small end of the end face protection tube is fixedly connected with the quartz cladding of the far end of the optical fiber.
Furthermore, the small end of the end face protection tube is fixedly connected with the quartz cladding at the far end of the optical fiber through welding or UV curing glue bonding. When the UV curing adhesive is used, the adhesive which can effectively reflect light with the wavelength less than 500nm after UV curing is selected, so that laser is prevented from leaking or gathering from the bonding position, and the reliability of the bonding position in use is improved.
Further, the far end of the heat shrinkable tube is fixed with the outer part of the large end of the end face protection tube in a heat shrinkage mode, and the heat shrinkage fixing part does not exceed the end face of the large end.
Further, for convenience of machining and simple structure, the transition section is of a conical structure or a step structure.
Furthermore, the wavelength of the high-power high-photon energy laser is 400 nm-500 nm, and the average power is more than 100W.
Further, in order to facilitate the manipulation of the optical fiber and to achieve better effects of forming the positive pressure fluid at the light outlet end of the optical fiber, the optical fiber assembly may further include a handle;
the handle is provided with a water outlet pipe, an optical fiber through hole and a water connector;
the near end of the water outlet pipe is fixedly connected with or integrated with the far end of the handle, and the far end of the water outlet pipe extends out of the handle;
the optical fiber via hole is communicated with the inner cavity of the water outlet pipe;
the large end of the water joint extends out of the near end of the handle and is used for being externally connected with a fluid source; the small end of the water joint is communicated with the inner cavity of the water outlet pipe; the cross section area of the pipe hole on the large end surface of the water passing joint is larger than that of the fluid channel;
the near end of the optical fiber extends out of the heat-shrinkable tube, sequentially passes through the water outlet pipe and the optical fiber via hole and then extends out of the handle, and the outer side surface of the optical fiber is hermetically connected with the inner surface of the optical fiber via hole;
the near end of the heat-shrinkable tube is sleeved outside the far end of the water outlet tube, and the heat-shrinkable tube and the water outlet tube are fixedly connected in a heat-shrinkable sealing mode.
Further, for simple processing, the optical fiber via hole and the water outlet pipe are coaxially arranged.
The invention has the beneficial effects that:
(1) the medical optical fiber component is applied to medical laser with the laser wavelength less than 500nm and the power more than 100W. First, an end face protection tube and a positive pressure fluid flushing mode are adopted. Positive pressure fluid flows through the light-emitting end face of the optical fiber through the fluid channel, and the light-emitting end face of the optical fiber is retracted into the end face protection tube, so that the light-emitting end of the optical fiber is completely wrapped by the positive pressure fluid, and organic matters in surgery such as residues in surgery are prevented from being adsorbed on the light-emitting end face of the optical fiber; secondly, positive pressure fluid flows through the light-emitting end face of the optical fiber through the fluid channel, the flow channel is suddenly expanded at the tail end of the fluid channel to generate a jet flow line, a positive pressure area is formed in front of the light-emitting end face of the optical fiber, suspension tissue debris near the light-emitting end face of the optical fiber can be more efficiently washed, an isolation area is formed, the suspension tissue debris in a water environment is prevented from being adsorbed on the light-emitting end face of the optical fiber, and further, the vaporized tissue in the operation can be further effectively prevented from being adhered to the light-emitting end face of the optical fiber, so that the light-emitting end of the optical fiber is damaged and the optical fiber is burnt; moreover, the end face protection tube is fixedly connected with the heat shrinkable tube at the outer part and the optical fiber at the inner part, so that the end face protection tube is prevented from falling off, and the reliability is improved; under the synergistic effect of the three components, the light-emitting end face of the optical fiber is prevented from adsorbing suspended tissue powder to cause laser energy to be concentrated and heated at the light-emitting end of the optical fiber to cause the light-emitting end of the optical fiber to be burnt, and the light-emitting end of the optical fiber is close enough to a target soft tissue to achieve the required laser power density on the surface of the vaporized target soft tissue; therefore, the invention solves the technical problem that when the existing medical optical fiber component transmits laser with the wavelength less than 500nm and the power more than 100W, the optical fiber is easy to be burnt due to organic substances of human bodies in operation adhered to the light-emitting end of the optical fiber, so that the operation can not be normally carried out.
(2) The invention preferably selects the small end of the end face protection tube to be fixedly connected with the quartz cladding of the far end of the optical fiber, and the optical fiber is positioned outside the end face protection tube, and the optical fiber coating layer is reserved, so that the optical fiber can be protected, and the treatment effect of the optical fiber assembly is not influenced.
(3) The small end of the end face protection tube is preferably fixedly connected with the quartz cladding at the far end of the optical fiber through welding or UV curing glue bonding. When the UV curing adhesive is used, the adhesive which can effectively reflect light with the wavelength less than 500nm after UV curing is selected, so that laser is prevented from leaking or gathering from the bonding position, and the reliability of the bonding position in use is improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at I;
fig. 3 is a front view of the end-face protection tube in the embodiment of the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a left side view of FIG. 3;
FIG. 6 is a schematic view of fluid flow lines for a medical fiber optic assembly using an embodiment of the present invention for high power high photon energy lasers;
fig. 7 is a partial enlarged view of fig. 6 at ii.
The reference numerals in the drawings are explained as follows:
1-handle, 10-optical fiber via hole, 2-optical fiber, 21-light-emitting end face, 22-coating layer, 23-quartz cladding, 3-heat-shrinkable tube, 4-end face protection tube, 41-fluid via hole, 5-fluid channel, 51-water-passing joint, 52-water outlet pipe, 53-diffusion flow line and 54-pressure water head.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the medical optical fiber assembly applied to high-power high-photon energy laser of the present invention includes an optical fiber 2, an end surface protection tube 4 and a heat shrink tube 3. The high-power high-photon energy laser is a laser with the wavelength less than 500nm and the power more than 100W. Generally, for better therapeutic effect, the wavelength of the high-power high-photon energy laser is preferably 400nm to 500nm, and the average power is more than 100W.
Referring to fig. 1, the distal end of the optical fiber 2 extends into the end face protection tube 4 from the small end thereof, and does not extend out of the large end of the end face protection tube 4; the small end of the end face protection tube 4 is fixedly connected with the outer side face of the far end of the optical fiber 2. In order to generate an effective positive pressure region, and not only enable the light-emitting end face 21 of the optical fiber 2 to adsorb suspended powder, and cause laser energy to gather and heat up at the light-emitting end of the optical fiber 2, so as to cause the light-emitting end of the optical fiber 2 to be burnt out, but also enable the light-emitting end of the optical fiber 2 to be close enough to a target soft tissue, and not to influence the treatment effect, the distance between the light-emitting end face 21 of the optical fiber 2 and the large-end face of the end face protection tube 4 can be preferably 0.5 mm-2 mm. The ratio of the distance between the light-emitting end face 21 of the optical fiber 2 and the large-end face of the end face protection tube 4 to the diameter of the inner hole at the large end of the end face protection tube 4 is 0.5-1 times of the tangent value of the light receiving cone angle of the optical fiber 2. In order to protect the optical fiber 2 and not affect the treatment effect of the optical fiber assembly, the embodiment prefers that the optical fiber 2 is located at the part outside the end face protection tube 4, the coating layer 22 is retained, the part inside the end face protection tube 4 is stripped, the coating layer 22 is stripped, the small end of the end face protection tube 4 is fixedly connected with the quartz cladding 23 at the far end of the optical fiber 2, and the optical fiber 2 is prevented from being burnt due to overheating of the coating layer 22 of the optical fiber 2. In order to ensure that the transmitted laser cannot leak and gather from the joint of the optical fiber 2 and the end face protection tube 4, in the embodiment, the small end of the end face protection tube 4 is fixedly connected with the quartz cladding 23 at the far end of the optical fiber 2 through the UV curing adhesive in a bonding manner, so that the stress of the cured ultraviolet adhesive on the optical fiber 2 is very small, the light leakage of the optical fiber 2 at the bonding position is avoided, and the cured ultraviolet adhesive can effectively reflect high photon energy laser and has the effects of ageing resistance and flame retardance. Besides the UV curing glue bonding and fixing of the embodiment, the UV curing glue bonding and fixing can also be achieved through welding. The outer diameter of the coating layer 22 of the optical fiber 2 selected in this embodiment is 1.1 mm, and after the coating layer 22 is peeled off, the outer diameter of the inner quartz cladding 23 is 0.845 mm. The wall thickness of the end face protection tube 4 is about 0.2 mm, the length is about 15 mm, the inner diameter of the small end is about 0.85 mm, the inner diameter of the large end is about 1.8 mm, and the end face protection tube can be made of medical metal, quartz, ceramic and the like.
Referring to fig. 1, in order to facilitate manipulation of the optical fiber 2, the medical optical fiber assembly applied to high-power high-photon energy laser of the present embodiment preferably further includes a handle 1. The handle 1 is provided with a water outlet pipe 52, an optical fiber via hole 10 and a water connector 51; the near end of water outlet pipe 52 is fixedly connected with or integrated with the far end of handle 1, and the far end of water outlet pipe 52 extends out of handle 1; the optical fiber via hole 10 is communicated with the inner cavity of the water outlet pipe 52; the large end of the water joint 51 extends out of the near end of the handle 1 and is used for being externally connected with a fluid source; the small end of the water joint 51 is communicated with the inner cavity of the water outlet pipe 52; the cross-sectional area of the pipe hole of the large end surface of the water passing joint 51 is larger than that of the fluid channel 5; the near end of the optical fiber 2 extends out of the heat-shrinkable tube 3, sequentially passes through the water outlet pipe 52 and the optical fiber via hole 10 and then extends out of the handle 1, and the outer side surface of the optical fiber 2 is hermetically connected with the inner surface of the optical fiber via hole 10; the near end of the heat shrink tube 3 is sleeved outside the far end of the water outlet pipe 52, and the heat shrink tube and the water outlet pipe are fixedly connected through heat shrink sealing. In this embodiment, the handle 1 is a fibrous body-shaped handle with a cone-like shape, the water outlet pipe 52 and the handle 1 are designed integrally, the optical fiber via hole 10 and the water outlet pipe 52 are coaxially arranged, the handle 1 and the optical fiber 2 are fixedly fastened by a buckle (not shown in the buckle), and the water connector 51 is a funnel shape with a large end and a small end. Thus, the water passage joint 51 generates a pressure head and a velocity head for the fluid passage 5, since the cross-sectional area of the tube hole of the large end surface of the water passage joint 51 is larger than that of the fluid passage 5, the pressure loss of the entire fluid passage can be compensated, and the heat shrinkable tube 3 is preferably made of a material having a contact angle with the fluid close to 90 degrees, so that the capillary action is reduced, and the surface tension of the fluid is reduced. When transporting fluids, the viscosity should be reduced and the flow rate reduced.
Referring to fig. 2, a partial structure of the end surface protection tube region in the present embodiment is clearly seen from fig. 2. The far end of the heat shrinkable tube 3 is sleeved outside the optical fiber 2 and the end face protection tube 4, and the far end of the heat shrinkable tube 3 is fixedly connected with the large end of the end face protection tube 4. In this embodiment, the distal end of the heat shrinkable tube 3 is fixed to the outside of the large end of the end surface protection tube 4 by heat shrinkage, and the heat shrinkable fixing portion does not exceed the end surface of the large end. In this embodiment, the distal end surface of the heat shrinkable tube 3 is preferably flush with the middle section of the large end of the end surface protection tube 4, and may also be flush with the end surface of the large end of the end surface protection tube 4. An annular gap fluid channel 5 is formed between the heat shrinkable tube 3 and the optical fiber 2. In this embodiment, the heat shrinkable tube 3 has a length of about 300 mm, an outer diameter of 2.3 mm, an inner diameter of 2mm, and low elasticity, and is made of FEP semi-rigid plastic.
Referring to fig. 3, fig. 3 is a front view of the end-face protection tube in the embodiment of the present invention. One or more fluid through holes 41 are arranged at the transition section of the small end and the large end of the end face protection pipe 4, and preferably, the number of the fluid through holes 41 is two and the fluid through holes are uniformly distributed. In this embodiment, the transition section between the small end and the large end of the end face protection tube 4 is preferably a tapered structure, and may also be a step structure.
Referring to fig. 4, fig. 4 is a top view of the end surface protection tube in the embodiment of the present invention corresponding to the case where fig. 3 is a front view.
Referring to fig. 5, fig. 5 is a left side view of the end surface protection tube in the embodiment of the present invention corresponding to the case where fig. 3 is a front view. The fluid vias 41 are uniformly distributed and preferably have the same curvature in profile cross section.
Referring to fig. 6, fig. 6 is a schematic fluid flow line diagram of a medical optical fiber assembly applied to high-power high-photon energy laser according to an embodiment of the present invention. In this embodiment, the fluid channel 5 belongs to a slit flow with a relatively small cross-sectional area, and since the light-emitting end of the optical fiber 2 is retracted into the end-face protection tube 4, the fluid wraps the light-emitting end face of the optical fiber when flowing out from the end of the fluid channel 5, and forms a strong-acting diffusion flow line 53. The diffusive streamline 53 is formed by diffusion of the positive pressure fluid turbulence mode radially toward the optical axis of the optical fiber 2.
Referring to fig. 7, it is clear from fig. 7 that the streamline diagram of the fluid in the area of the end face protection tube is shown when the medical optical fiber assembly applied to the high-power high photon energy laser according to the embodiment of the invention is used. The fluid forms a diffusion streamline 53 at the end of the fluid channel 5 due to the sudden enlargement of the inner boundary of the flow (the outer boundary is unchanged). The diffusing flow line 53 forms a positive pressure region at the light exit end face 21 of the optical fiber 2, and the pressure of the diffusing flow line is derived from the residual pressure of the pressure head 54 connected to the water passing connector 51 through the fluid channel 5. The distance between the light-emitting end face 21 of the optical fiber 2 and the large-end face of the end face protection tube 4 influences the divergence angle of the diffusion flow line 53, and further influences the pressure distribution in the positive pressure region.
The medical optical fiber component applied to the high-power high-photon energy laser can be reliably and safely used under the laser conditions of ultraviolet to blue spectrum with the wavelength less than 500nm and the power more than 100W.
Claims (9)
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| CN117179888A (en) * | 2022-05-30 | 2023-12-08 | 西安蓝极医疗电子科技有限公司 | Medical optical fiber assembly for side water outlet |
| CN117562655A (en) * | 2023-12-14 | 2024-02-20 | 西安蓝极医疗电子科技有限公司 | A soft tissue surgery system based on semiconductor laser |
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| US4350150A (en) * | 1979-09-25 | 1982-09-21 | Olympus Optical Co., Ltd. | Structure of a light-receiving end portion of an endoscope light guide |
| US5647840A (en) * | 1994-09-14 | 1997-07-15 | Circon Corporation | Endoscope having a distally heated distal lens |
| CN1668952A (en) * | 2002-07-18 | 2005-09-14 | 西沃科学公司 | Fiber-optic endface cleaning assembly and method |
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Denomination of invention: A Medical Fiber Module Applied to High Power and High Photon Energy Laser Granted publication date: 20220318 Pledgee: Pudong Development Bank of Shanghai Limited by Share Ltd. Xi'an branch Pledgor: Xi'an blue top medical electronic technology Co.,Ltd. Registration number: Y2024980008511 |
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