CN219000555U - Holmium laser fiber - Google Patents

Abstract

The utility model relates to the technical field of optical fiber sensors, in particular to a holmium laser optical fiber which comprises an optical fiber bundle, a sheath and a tapping device, wherein a first group is an energy transmission optical fiber, a first end of the energy transmission optical fiber is connected with a holmium laser generator, a second group is a temperature sensing optical fiber, a first end of the temperature sensing optical fiber is connected with an optical fiber temperature measuring device, a fluorescent film is arranged on the end face of a second end of the temperature sensing optical fiber, a third group is a light source optical fiber, a first end of the light source optical fiber is connected with a light source, a first end of the light source optical fiber is provided with a branching part, and the branching part is connected with a branching optical fiber; through setting up temperature sensing optic fibre and pressure sensor optic fibre, but audio-visual temperature and the pressure data that obtains the affected part for judge the power and the duration of holmium laser rubble, avoid temperature and the too high affected part surrounding tissue of patient that leads to of pressure to receive the damage, reduce the minus effect that holmium laser rubble produced to the patient.

Description

Holmium laser fiber

Technical Field

The utility model relates to the technical field of optical fiber sensors, in particular to a holmium laser optical fiber which is particularly used for surgical operation or interventional therapy in clinical medicine.

Background

Holmium pulse laser (Ho: YAG) is a laser source adopted in many surgical operations at present, the emission wavelength of holmium laser is about 2.1 mu m (about 2120 nm) in the near infrared range, the holmium pulse laser has high absorptivity in water, the optical penetration depth in water is about 400 mu m, so holmium pulse laser beam thermal expansion and water evaporation are the first choice for treating urolithiasis, prostatic hyperplasia, urethral stricture and urothelial tumors in the field of urology surgery, and the holmium pulse laser has remarkable effect when various calculi are ablated and fine and flexible laser fibers are used for cutting, ablating and ablating tissues.

For example, by taking lithotripsy ablation as an example, the energy generated by the holmium laser beam can enable water between the tail end of the optical fiber and the stone to be gasified, tiny cavitation bubbles are formed, the energy is transferred to the stone, the stone is crushed into powder, a large amount of energy is absorbed by the water, damage to surrounding tissues is reduced, meanwhile, the penetration depth of holmium laser to human tissues is shallow and is only 0.38mm, and the lithotripsy stone has small damage to the surrounding tissues and high safety.

In the actual holmium laser process, heat can be generated, local pressure can be increased in the body due to water vaporization, if other associated diseases or basic focuses exist in the body, the local pressure can damage soft tissues of the affected parts, cells of the affected parts die, and if the pressure and the temperature are controlled improperly, larger side effects can be caused to patients.

Disclosure of Invention

In view of the drawbacks of the prior art, a first aspect of the present utility model proposes a holmium laser fiber comprising:

an optical fiber bundle comprising a plurality of optical fiber monofilaments;

a sheath wrapped on the outer wall of the optical fiber bundle

A tap for dividing the optical fiber monofilaments in the optical fiber bundle into three groups;

the first group is an energy transmission optical fiber, the first end of the energy transmission optical fiber is connected with a holmium laser generator, the second group is a temperature sensing optical fiber, the first end of the temperature sensing optical fiber is connected with an optical fiber temperature measuring device, the second end face of the temperature sensing optical fiber is provided with a fluorescent film, the third group is a light source optical fiber, the first end of the light source optical fiber is connected with a light source, the first end of the light source optical fiber is provided with a branch part, the branch part is connected with a branch optical fiber, the branch optical fiber is connected with a processing device, and the second end of the light source optical fiber is fixedly provided with a pressure sensor optical fiber for detecting pressure.

Preferably, the pressure sensor optical fiber comprises a fiber core and a cladding, wherein the cladding is coated on the outer wall of the fiber core, a light scattering layer is arranged between the fiber core and the cladding, the pressure sensor optical fiber further comprises a reflecting film, and the reflecting film is fixed on the end face of the fiber core.

Preferably, the light-diffusing layer comprises a plurality of uniformly distributed light-diffusing particles.

Preferably, a first connector is fixed at a first end of the energy transmission optical fiber, and the energy transmission optical fiber is detachably connected with the holmium laser generator through the first connector.

Preferably, the first end of the temperature sensing optical fiber is fixed with a second connector, and the temperature sensing optical fiber is connected with the optical fiber temperature measuring device through the second connector in a detachable mode.

Preferably, a third connector is fixed at the first end of the light source optical fiber, and the light source optical fiber is detachably connected with the light source through the third connector.

Preferably, a fourth connector is fixed on the branch optical fiber, and the branch optical fiber is detachably connected with the processing device through the fourth connector.

Preferably, the second end of the energy transmission optical fiber and the second end of the temperature sensing optical fiber extend out of the outer side of the sheath by 10-15mm.

Preferably, the pressure sensor fiber is located outside the sheath.

Preferably, the length of the pressure sensor optical fiber is 10-15mm.

Compared with the prior art, the holmium laser fiber provided by the utility model has the remarkable beneficial effects that:

according to the holmium laser fiber, the temperature sensing optical fiber and the pressure sensor optical fiber are arranged, so that local temperature and pressure data of an affected part can be intuitively obtained, the power and the duration of holmium laser lithotripter can be judged in an auxiliary mode, damage to tissues around the affected part of a patient caused by overhigh temperature and pressure is avoided, and side effects of holmium laser lithotripter on the patient are reduced.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing.

Fig. 1 is a schematic structural diagram of a holmium laser fiber according to the present utility model.

Fig. 2 is a schematic view of the radial cross-sectional structure of a fiber bundle in a holmium laser fiber according to the present utility model.

Fig. 3 is a schematic view of the position of a pressure sensor fiber in a holmium laser fiber according to the present utility model.

Fig. 4 is a schematic view of the radial cross section of the pressure sensor fiber in the holmium laser fiber of the present utility model.

Fig. 5 is an axial structural schematic diagram of a pressure sensor fiber in a holmium laser fiber according to the present utility model.

In the drawings, the meaning of each reference numeral is as follows:

10. an optical fiber bundle; 11. an energy transmission fiber; 12. a temperature sensing optical fiber; 13. a light source optical fiber; 131. branching optical fibers; 14. a pressure sensor optical fiber; 141. a fiber core; 142. a cladding layer; 143. a light scattering layer; 144. a reflective film; 15. a sheath; 20. a tap; 30. a first joint; 40. a second joint; 50. a third joint; 60. and a fourth joint.

Detailed Description

For a better understanding of the technical content of the present utility model, specific examples are set forth below, along with the accompanying drawings.

A holmium laser fiber incorporating the embodiment shown in fig. 1 includes a fiber bundle 10 and a tap 20. The optical fiber monofilaments in the optical fiber bundle 10 are divided into three groups by the tapping device 20, wherein the first group is an energy transmission optical fiber 11, the second group is a temperature sensing optical fiber 12, and the third group is a light source optical fiber 13.

Alternatively, the second end of the energy transmission fiber 11 and the second end of the temperature sensing fiber 12 both extend 10-15mm outside the sheath 15.

As shown in fig. 1 and 2, the first end of the energy transmission optical fiber 11 is connected with the holmium laser generator, the laser source emitted by the holmium laser generator is transmitted to the affected part through the energy transmission optical fiber 11, the laser is emitted out through the tail end of the energy transmission optical fiber 11 and is emitted on the stone, part of the laser is absorbed by water around the stone to form a vaporization channel, the residual laser passing through the channel is absorbed by the stone, and the stone is crushed and finally washed out of the human body by the water.

Further, the energy transmission fibers 11 are plural in number, and are wrapped by the sheath 15 to form a circular cross section, so as to form a circular therapeutic fiber.

Optionally, the first end of the energy transmission optical fiber 11 is fixed with a first connector 30, and the energy transmission optical fiber 11 is detachably connected with the holmium laser generator through the first connector 30, so that the disassembly and the assembly are convenient, and the use convenience is improved.

As shown in fig. 1 and fig. 2, the first end of the temperature sensing optical fiber 12 is connected with the optical fiber temperature measuring device, the second end face of the temperature sensing optical fiber 12 is provided with a fluorescent film, after being excited by light with a certain wavelength, the fluorescent film radiates fluorescent energy, after the light source is removed, the persistence of fluorescence afterglow is affected by factors such as ambient temperature, and the attenuation degree of the fluorescence afterglow is different under different ambient temperatures, so that the ambient temperature at that time can be calculated by detecting the length of the service life of the fluorescence afterglow.

Thus, the temperature sensing optical fiber 12 and the optical fiber temperature measuring device are matched to form the fluorescent optical fiber sensor, so that the temperature of liquid at an affected part can be detected in real time, a temperature reference is provided for holmium laser lithotripsy treatment, and when the temperature rises to 45-50 ℃, the lithotripsy power is reduced so as to keep the temperature in a lower range.

Further, the holmium laser generator is a solid pulse laser with the wavelength of 2.1 mu m, the pulse time is 200 mu s-600 mu s, the average power is 30-100W, and the pulse energy is 2.5-3.5J. In particular, a single-pulse laser beam having excellent beam quality M ² ＜1.2/1.3。

Optionally, the first end of the temperature sensing optical fiber 12 is fixed with the second connector 40, and the temperature sensing optical fiber 12 is detachably connected with the optical fiber temperature measuring device through the second connector 40, so that the disassembly and the assembly are convenient, and the use convenience is improved.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the third group is a light source optical fiber 13, a first end of the light source optical fiber 13 is connected with a light source, a branch part is arranged at the first end of the light source optical fiber 13, the branch part is connected with a branch optical fiber 131, the branch optical fiber 131 is connected with a processing device, a pressure sensor optical fiber 14 for detecting pressure is fixed at a second end of the light source optical fiber 13, the light source is conveyed to the pressure sensor optical fiber 14 through the light source optical fiber 13, when the pressure sensor optical fiber 14 is pressed, light loss occurs, the light loss increases along with the increase of pressure, the light after the loss is reflected by the light source optical fiber 13, the branch optical fiber 131 receives the light reflected by the pressure sensor optical fiber 14, and the loss of the light is calculated by the processing device, so that the current pressure can be known.

Optionally, the pressure sensor fiber 14 is located outside the sheath 15, avoiding the sheath 15 from affecting the pressure detection.

Further, the pressure sensor optical fiber 14 includes a fiber core 141 and a cladding 142, the cladding 142 is coated on the outer wall of the fiber core 141, a light scattering layer 143 is arranged between the fiber core 141 and the cladding 142, and the sensitivity of light loss when the pressure sensor optical fiber 14 is pressed is increased by arranging the light scattering layer 143 on the fiber core 141 and the cladding 142, so that the detection sensitivity is improved, the pressure sensor optical fiber 14 further includes a reflecting film 144, the reflecting film 144 is fixed on the end face of the fiber core 141, and light in the pressure sensor optical fiber 14 is reflected by the reflecting film 144, so that the reflecting effect is better.

Optionally, the light scattering layer 143 includes a plurality of uniformly distributed light scattering particles, so that loose light in the fiber core 141 can be better lost when being pressed, and the detection sensitivity can be improved.

Again alternatively, the pressure sensor fiber 14 is 10-15mm in length.

Referring to fig. 1, a third connector 50 is fixed at a first end of the light source optical fiber 13, the light source optical fiber 13 is detachably connected with the light source through the third connector 50, a fourth connector 60 is fixed on the branch optical fiber 131, the branch optical fiber 131 is detachably connected with the processing device through the fourth connector 60, and the light source optical fiber is convenient to assemble and disassemble, and improves the convenience of use.

By combining the above embodiments, the temperature data and the pressure data of the affected part can be intuitively obtained by arranging the temperature sensing optical fiber 12 and the pressure sensor optical fiber 14, so as to judge the power and the duration of holmium laser lithotripter, avoid the affected part from being damaged due to overhigh temperature and pressure, and reduce the side effect of the holmium laser lithotripter

While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present utility model. Accordingly, the scope of the utility model is defined by the appended claims.

Claims (10)

1. A holmium laser fiber comprising:

an optical fiber bundle (10) comprising a plurality of optical fiber monofilaments;

a sheath (15) wrapping the outer wall of the optical fiber bundle (10)

A tap (20) for dividing the optical fiber filaments in the optical fiber bundle (10) into three groups;

the first group is an energy transmission optical fiber (11), and a first end of the energy transmission optical fiber (11) is connected with a holmium laser generator; the second group is a temperature sensing optical fiber (12), a first end of the temperature sensing optical fiber (12) is connected with an optical fiber temperature measuring device, and a fluorescent film is arranged on the end face of a second end of the temperature sensing optical fiber (12); the third group is light source optical fiber (13), the first end and the light source of light source optical fiber (13) are connected, the first end of light source optical fiber (13) is equipped with branch portion, branch portion is connected with branch optical fiber (131), branch optical fiber (131) are connected with processing apparatus, the second end of light source optical fiber (13) is fixed with pressure sensor optical fiber (14) of detected pressure.

2. The holmium laser fiber according to claim 1, wherein the pressure sensor fiber (14) comprises a fiber core (141) and a cladding layer (142), the cladding layer (142) is coated on the outer wall of the fiber core (141), a light scattering layer (143) is arranged between the fiber core (141) and the cladding layer (142), the pressure sensor fiber (14) further comprises a reflecting film (144), and the reflecting film (144) is fixed on the end face of the fiber core (141).

3. The holmium laser fiber according to claim 2, wherein the light scattering layer (143) comprises a number of evenly distributed light scattering particles.

4. The holmium laser fiber according to claim 1, wherein a first end of the energy transmission fiber (11) is fixed with a first joint (30), and the energy transmission fiber (11) is detachably connected with the holmium laser generator through the first joint (30).

5. The holmium laser fiber according to claim 1, wherein a second connector (40) is fixed at a first end of the temperature sensing optical fiber (12), and the temperature sensing optical fiber (12) is detachably connected with the optical fiber temperature measuring device through the second connector (40).

6. The holmium laser fiber according to claim 1, wherein a third connector (50) is fixed to the first end of the light source fiber (13), and the light source fiber (13) is detachably connected to the light source through the third connector (50).

7. The holmium laser fiber according to claim 1, wherein a fourth connector (60) is fixed to the branch fiber (131), and the branch fiber (131) is detachably connected to the processing device through the fourth connector (60).

8. The holmium laser fiber according to claim 1, wherein the second end of the energy transmission fiber (11) and the second end of the temperature sensing fiber (12) both extend outside 1015mm of the sheath (15).

9. The holmium laser fiber according to claim 1, wherein the pressure sensor fiber (14) is located outside the sheath (15).

10. The holmium laser fiber according to claim 1, wherein the pressure sensor fiber (14) has a length of 10-15mm.

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