CN108852508B - Water cooling structure of laser surgical instrument - Google Patents

Abstract

The invention relates to a water-cooling structure of a laser surgical instrument, which includes a circulation seat, an outer tube, an inner tube, and a circulation pump. An outer circulation interlayer is provided between the inner wall of the outer tube and the outer wall of the inner tube. A light-guiding optical fiber is inserted into the inner tube. The light-guiding optical fiber is inserted into the inner tube. There is an internal circulation interlayer between the outer wall and the inner wall of the inner tube. There is a liquid return chamber and a liquid outlet chamber in the circulation seat. The outer tube is connected to the liquid outlet chamber, and the liquid return chamber is connected to the inner tube. The circulation seat is equipped with a liquid return interface. The circulation seat is provided with a liquid outlet port. The outlet and inlet of the circulation pump are connected to the liquid outlet port and the liquid return port respectively. A lens is provided at the front end of the outer tube, and the head of the inner tube is located in the outer tube. The invention forms an inner circulation interlayer and an outer circulation interlayer by having an outer tube and an inner tube outside the light guide fiber, and uses a circulation pump to control the cooling liquid to circulate in the inner circulation interlayer and the outer circulation interlayer to take away the heat on the light guide fiber and the lens. , prevent the light guide fiber and lens from overheating, simple structure, small size, the light guide fiber that moves back and forth adjusts the irradiation intensity of the lens.

Description

A water-cooling structure for laser surgical instruments

Technical field

The invention relates to medical instruments, in particular to a water-cooling structure of laser surgical instruments.

Background technique

Compared with traditional surgical knives, laser knives have less bleeding and higher work efficiency. However, when existing laser knives are used to operate on narrow areas such as intracranial knives, optical fibers are usually used to guide the laser. When the optical fibers guide the light, their own heat and heat rise, affecting the operation. Effect.

Contents of the invention

In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a water-cooling structure for laser surgical instruments.

The technical solution adopted by the present invention to solve the technical problem is: a water-cooling structure of a laser surgical instrument, which includes a circulation seat, an outer tube arranged on the head of the circulation seat, an inner tube arranged on the head of the circulation seat, and a circulation seat. Pump, the outer diameter of the inner tube is smaller than the inner diameter of the outer tube, the inner tube is inserted into the outer tube, that is, an external circulation interlayer is provided between the inner wall of the outer tube and the outer wall of the inner tube, and the inner tube is inserted There is a light-guiding fiber, the outer diameter of the light-guiding fiber is smaller than the inner diameter of the inner tube, that is, an internal circulation interlayer is provided between the outer wall of the light-guiding fiber and the inner wall of the inner tube, and a liquid return chamber is provided in the circulation seat. and a liquid outlet chamber, the outer tube is connected to the liquid outlet chamber, the liquid return chamber is connected to the inner tube, the circulation seat is provided with a liquid return interface connected to the liquid return chamber, the The circulation seat is provided with a liquid outlet port connected to the liquid outlet chamber. The outlet and inlet of the circulation pump are respectively connected to the liquid outlet port and the liquid return port. The front end of the outer tube is provided with a sealing outlet to seal the outer tube. The lens of the head, the lens is made of transparent material, the head of the inner tube is located inside the outer tube, that is, the head of the inner tube is shorter than the head of the outer tube, and the tail end of the light guide fiber is exposed to facilitate communication with the outer tube. Laser coupling.

In the above design, an outer tube and an inner tube are wrapped around the light guide fiber to form an inner circulation interlayer and an outer circulation interlayer. A circulation pump is used to control the coolant to circulate in the inner circulation interlayer and the outer circulation interlayer, taking away the heat on the light guide fiber and lens. heat to prevent overheating of the light guide fiber and the lens from affecting the surgical effect. This method has a simple structure, small size, effectively reduces the trauma surface, and can effectively take away heat. The forward and backward moving light guide fiber facilitates adjustment of the distance between the light guide fiber and the lens. , thereby adjusting the irradiation intensity of the lens.

As a further improvement of this design, the circulation pump is a dynamic pump, and the coolant flow rate is easy to control and will not cause large vibrations of the lens, making it convenient and precise for surgery.

As a further improvement of this design, the inlet of the circulation pump is connected to the liquid return interface, and the outlet of the circulation pump is connected to the liquid outlet interface to control the movement of coolant from the outer ring interlayer to the inner circulation interlayer, thereby improving the cooling effect. better.

As a further improvement of this design, the tail end of the inner tube protrudes from the tail end of the outer tube, the tail end of the light guide fiber protrudes from the tail end of the inner tube, and the circulation seat is provided with a convenient The optical fiber hole extends out of the light-guiding optical fiber, and the outer wall of the light-guiding optical fiber fits the inner wall of the optical fiber hole.

As a further improvement of this design, water seals are provided at both ends of the optical fiber hole to facilitate the passage of light-guiding optical fibers and prevent coolant from leaking from the optical fiber hole.

As a further improvement of this design, the circulation seat includes a front seat, a rear seat connected to the rear end of the front seat, and a guide seat connected to the rear end of the rear seat. The rear end of the front seat is provided with a liquid outlet. The end of the rear seat is provided with an external fixing hole connected to the liquid outlet hole. The outer wall of the outer tube fits the inner wall of the external fixed hole without any gap. The front end of the rear seat is provided with a hole extending into the liquid outlet hole. Front plug, the outer wall of the front plug fits the inner wall of the liquid outlet hole, and the liquid outlet hole is closed into a liquid outlet chamber by the front plug. The tail end of the rear seat is provided with a liquid return hole, so The front plug is provided with an internal fixing hole extending backward from the front plug to the liquid return hole. The outer wall of the inner tube fits the inner wall of the internal fixing hole with no gap between them. The front end of the guide seat is provided with There is a rear plug extending into the liquid return hole. The rear plug seals the liquid return hole into a liquid return chamber. The outer wall of the rear plug is in contact with the inner wall of the liquid return hole and there is no gap between them. , the optical fiber hole extends from the head of the rear plug to the tail of the guide seat. The circulating seat adopts a combination of rear seat, front seat and guide seat, which is easy to assemble.

As a further improvement of this design, the liquid return chamber is connected with an exhaust valve to prevent bubbles in the coolant from affecting the stability of the lens.

The beneficial effects of the present invention are: the present invention forms an inner circulation interlayer and an outer circulation interlayer by having an outer tube and an inner tube wrapped around the light guide optical fiber, and uses a circulation pump to control the cooling liquid to circulate in the inner circulation interlayer and the outer circulation interlayer, taking away the guide The heat on the optical fiber and lens prevents the overheating of the light-guiding fiber and lens from affecting the surgical effect. This method has a simple structure and small size, effectively reduces the trauma surface, and can effectively take away heat. The forward and backward moving light-guiding fiber facilitates adjustment of the light guide. The distance between the optical fiber and the lens adjusts the irradiation intensity of the lens.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and examples.

Figure 1 is a schematic diagram of the overall cross-sectional structure of the present invention.

In the picture 1. Guide seat, 2. Light guide fiber, 3. Water seal, 4. Back seat, 5. Internal fixing hole, 6. Liquid return chamber, 7. Liquid return interface, 8. Liquid outlet chamber, 9. Front seat, 10. Liquid outlet, 11. Circulation pump, 12. Exhaust valve, 13. Inner tube, 14. Lens, 15. External fixing hole, 16. Rear plug, 17. Front plug, 18. Fiber optic hole , 19. Outer tube.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions are only used to explain the present invention, but are not intended to limit the present invention.

Embodiment: A water-cooling structure for laser surgical instruments, including a circulation seat, an outer tube 19 provided at the head of the circulation seat, an inner tube 13 provided at the head of the circulation seat, and a circulation pump 11. The inner tube 13 The outer diameter is smaller than the inner diameter of the outer tube 19 , and the inner tube 13 is inserted into the outer tube 19 , that is, an external circulation interlayer is provided between the inner wall of the outer tube 19 and the outer wall of the inner tube 13 , and the inner tube 13 A light guide fiber 2 is inserted inside. The outer diameter of the light guide fiber 2 is smaller than the inner diameter of the inner tube 13. That is, an internal circulation interlayer is provided between the outer wall of the light guide fiber 2 and the inner wall of the inner tube 13. The circulation interlayer The seat is provided with a liquid return chamber 6 and a liquid outlet chamber 8. The outer tube 19 is connected with the liquid outlet chamber 8. The liquid return chamber 6 is connected with the inner tube 13. The circulation seat is provided with a The liquid return interface 7 communicates with the liquid return chamber 6. The circulation seat is provided with a liquid outlet interface 10 that communicates with the liquid outlet chamber 8. The outlet and inlet of the circulation pump 11 are respectively connected with the liquid outlet interface. 10 is connected to the liquid return interface 7. The front end of the outer tube 19 is provided with a lens 14 that closes the head of the outer tube 19. The lens 14 is made of transparent material. The head of the inner tube 13 is located in the outer tube 19. , that is, the head of the inner tube 13 is shorter than the head of the outer tube 19 , and the tail end of the light guide fiber 2 is exposed for coupling with the laser.

In the above design, the outer tube 19 and the inner tube 13 are wrapped around the light guide fiber 2 to form an inner circulation interlayer and an outer circulation interlayer. The circulation pump 11 is used to control the coolant to circulate in the inner circulation interlayer and the outer circulation interlayer to take away the light guide fiber. 2 and the heat on the lens 14 to prevent the light guide fiber 2 and the lens 14 from overheating and affecting the surgical effect. This method has a simple structure and a small volume, effectively reduces the trauma surface, and can effectively take away heat. The light guide fiber 2 that moves back and forth facilitates Adjust the distance between the light guide fiber 2 and the lens 14, and then adjust the irradiation intensity of the lens 14.

As a further improvement of this design, the circulation pump 11 is a dynamic pump, and the coolant flow rate is easy to control and will not cause large vibrations of the lens 14, which facilitates and precise surgery.

As a further improvement of this design, the inlet of the circulation pump 11 is connected to the liquid return interface 7, and the outlet of the circulation pump 11 is connected to the liquid outlet interface 10 to control the cooling liquid to circulate from the outer ring interlayer to the inner interlayer. Exercise, cooling effect is better.

As a further improvement of this design, the rear end of the inner tube 13 extends from the rear end of the outer tube 19, the rear end of the light guide fiber 2 extends from the rear end of the inner tube 13, and the circulation seat is provided with There is a fiber hole 18 for the light guide fiber 2 to extend out, and the outer wall of the light guide fiber 2 fits the inner wall of the fiber hole 18 .

As a further improvement of this design, water seals 3 are provided at both ends of the optical fiber hole 18 to facilitate the passage of the light guide fiber 2 and prevent coolant from leaking from the optical fiber hole 18 .

As a further improvement of this design, the circulation seat includes a front seat 9, a rear seat 4 connected to the rear of the front seat 9, and a guide seat 1 connected to the rear of the rear seat 4. The rear end of the front seat 9 is provided with a liquid outlet. hole, the rear end of the front seat 9 is provided with an external fixing hole 15 connected with the liquid outlet hole, the outer wall of the outer tube 19 fits the inner wall of the external fixing hole 15 without any gap, and the rear seat 4 The front end is provided with a front plug 17 that extends into the liquid outlet hole. The outer wall of the front plug 17 fits the inner wall of the liquid outlet hole. The liquid outlet hole is closed by the front plug 17 to form a liquid outlet cavity. 8. The rear end of the rear seat 4 is provided with a liquid return hole, and the front plug 17 is provided with an internal fixing hole 5 extending backward from the front plug 17 to the liquid return hole. The outer wall of the inner tube 13 is in contact with the liquid return hole. The inner walls of the inner fixing holes 5 fit together without any gaps. The front end of the guide seat 1 is provided with a rear plug 16 that extends into the liquid return hole. The rear plug 16 seals the liquid return hole. In the liquid return chamber 6, the outer wall of the rear plug 16 fits the inner wall of the liquid return hole with no gap between them. The optical fiber hole 18 extends from the head of the rear plug 16 to the tail of the guide seat 1. The circulation seat adopts a combination of the rear seat 4, the front seat 9 and the guide seat 1, which is easy to assemble.

As a further improvement of this design, the liquid return chamber 6 is connected with an exhaust valve 12 to prevent bubbles in the coolant from affecting the stability of the lens 14 .

The above are only examples of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related technologies fields are equally included in the scope of patent protection of the present invention.

Claims (7)

1. The utility model provides a laser surgical instrument water cooling structure, its characterized in that, including circulation seat, set up in the outer tube of circulation seat head, set up in inner tube, the circulating pump of circulation seat head, the inner tube external diameter is less than the outer tube internal diameter, the inner tube inserts in the outer tube, namely the outer tube inner wall with be equipped with outer circulation intermediate layer between the inner tube outer wall, the inner tube interpolation has the light guide optic fibre, the light guide optic fibre external diameter is less than the inner tube internal diameter, namely the light guide optic fibre outer wall with be equipped with inner circulation intermediate layer between the inner tube inner wall, be equipped with back liquid chamber and play liquid chamber in the circulation seat, the outer tube with go out liquid chamber intercommunication, back liquid chamber with the inner tube intercommunication, the inner tube head is the open end, be equipped with on the circulation seat with go out liquid interface with go out liquid chamber intercommunication, the export and the import of circulating pump respectively with back liquid interface intercommunication, the front end is equipped with the lens that seals the outer tube head, the lens is the tail end is the outer tube is located the outer tube is shorter than the outer tube optical coupler with the outer tube light guide head just.

2. The laser surgical instrument water cooling structure according to claim 1, wherein the circulation pump is a peristaltic pump.

3. The laser surgical instrument water cooling structure according to claim 1, wherein the inlet of the circulating pump is communicated with the liquid return port, and the outlet of the circulating pump is communicated with the liquid outlet port.

4. The laser surgical instrument water cooling structure according to claim 1, wherein the tail end of the inner tube extends from the tail end of the outer tube, the tail end of the light guide fiber extends from the tail end of the inner tube, the circulation seat is provided with a fiber hole for facilitating the extension of the light guide fiber, and the outer wall of the light guide fiber is attached to the inner wall of the fiber hole.

5. The water cooling structure of laser surgical instrument according to claim 4, wherein the two ends of the fiber hole are provided with water seals for facilitating the passage of the light guide fiber.

6. The laser surgical instrument water cooling structure according to claim 1, wherein the circulation seat comprises a front seat, a rear seat connected with the tail of the front seat and a guide seat connected with the tail of the rear seat, the tail end of the front seat is provided with a liquid outlet hole, the tail end of the front seat is provided with an outer fixing hole communicated with the liquid outlet hole, the outer wall of the outer tube is attached to the inner wall of the outer fixing hole without gaps, the front end of the rear seat is provided with a front plug extending into the liquid outlet hole, the outer wall of the front plug is attached to the inner wall of the liquid outlet hole, the liquid outlet hole is sealed into a liquid outlet cavity by the front plug, the tail end of the rear seat is provided with a liquid return hole, the front plug is provided with an inner fixing hole extending from the front plug back to the liquid return hole, the outer wall of the inner tube is attached to the inner fixing hole without gaps, the front end of the guide seat is provided with a rear plug extending into the liquid return hole, the liquid return hole is sealed into the liquid cavity, the rear plug is attached to the inner wall of the liquid return hole, and the rear plug extends from the tail of the guide seat to the head.

7. The laser surgical instrument water cooling structure according to claim 1, wherein the liquid return cavity is communicated with an exhaust valve.