TWI782275B - Optical structure of endoscope - Google Patents

Abstract

The present invention provides an optical structure of an endoscope, which utilizes one side of a first tube to pass through a first light outlet, an optical fiber is arranged inside one of the first tube, and a first lens is adjacently arranged on the On one side of the optical fiber part, a second lens is adjacently arranged on the first lens away from the side of the optical fiber part, and the first lens and the second lens respectively have a first and second angles, and a reflective mirror is opposite to each other. Adjacent to the side of the second lens away from the first lens, wherein the position of the reflector corresponds to the position of the first light exit, so as to reflect a light emitted by the optical fiber component out of the first light exit.

Description

Optical structure of endoscope

The present invention relates to an optical structure of an endoscope, in particular to an endoscope structure with laser therapy combined with high image resolution scanning technology.

With the development of medical technology, laser surgery has become an important treatment method in medical clinics. However, if there is no image-guided tool to confirm the treatment position and real-time monitoring of the treatment effect during the treatment process, unnecessary damage to surrounding tissues may occur. Excessive injury or unintended effect.

Nowadays, laser surgery has been widely used in clinical medicine. The main principle is to use high-energy laser to irradiate biological tissues, and the water in biological tissues will cause soft tissue vaporization. This technology has been widely used in ophthalmology and dermatology, such as quasi- Laser-Assisted in Situ Keratomileusis (LASIK), skin resurfacing surgery, liver thrombus, brain tumor laser ablation surgery, etc. The use of laser can produce photothermal effect (photothermolysis) on biological tissue and then cause tissue coagulation (coagulation) or vaporization (vaporization) to achieve the therapeutic effect. Compared with other therapeutic media such as ultrasonic (ultrasound) or electromagnetic (electromagnetic wave) ), laser light can narrow the treatment area to a micron level through optical elements, so laser treatment can strengthen treatment for small areas to avoid additional damage, but the photothermal effect produced by laser is related to many factors, such as tissue moisture content , irradiation power, tissue optical characteristics, laser wavelength, etc., making it difficult to predict the photothermal effect, so image-guided laser surgery can effectively improve treatment efficiency and reduce unnecessary injuries. However, it is generally difficult to use existing clinical techniques as a guiding tool due to the small laser treatment range, and other high-resolution imaging techniques, such as confocal microscopy, fluorescence microscopy, and nonlinear microscopy, have limited imaging depth. Therefore, it is difficult to understand the photothermal effect caused by the laser under the tissue through the above-mentioned imaging tools.

The laser treatment guidance tools of the current conventional technology include the use of detection technologies such as nuclear magnetic resonance, X-ray, ultrasonic scanning, computerized tomography scanning, etc., but the image resolution provided by the above-mentioned conventional detection technologies is low, about several From hundreds of microns to several centimeters, it is difficult to accurately locate and obtain accurate information for laser treatment. Another type uses endoscopes or dermatoscopes to observe tissue surface images. Although compared with the first type of imaging technology, endoscopes or dermatoscopes have higher resolution, but this type of technology can only observe the tissue surface and cannot Exactly observe or monitor the condition of laser treatment below the surface. In our proposed application of optical coherence tomography technology as a laser treatment guidance tool, this optical imaging technology has high resolution (about a few microns), and can observe the tissue depth of 2~3 cm below the surface. This image depth is comparable to that of laser The penetration depth of the treatment is similar, so compared with the previous two types of imaging tools, optical coherence tomography technology is more suitable for laser treatment monitoring and evaluation.

In the conventional technology, the treatment laser spots used clinically are about tens of micrometers or hundreds of micrometers in size. However, if the conventional clinical imaging tools are used, such as magnetic resonance, X-ray, ultrasound, etc. The image resolution of the above-mentioned tools is insufficient, and it is difficult to be accurately applied to laser therapy; therefore, the medical field and the industry are in urgent need of an endoscopic structure that combines laser therapy with a scanning technology with high image resolution.

In view of the above-mentioned problems in the prior art, the present invention provides an optical structure of an endoscope, which uses optical images to monitor laser treatment synchronously, and designs a miniature catheter or probe structure that can simultaneously overlap the optical Image scanning range and laser treatment beam and focus the two beams on the test end at the same time, laser treatment can be performed at the same time through this microcatheter, and the treatment site can be confirmed and the treatment effect can be monitored with optical images; it is set in an endoscope It is also applied to the skin, gastrointestinal tract, cardiovascular, oral cavity, brain, nasal cavity, chest cavity, liver and other areas for optical image-guided laser therapy.

An object of the present invention is to provide an optical structure of an endoscope, which uses a first tube to arrange an optical fiber, a first lens, a second lens and a reflector, the optical fiber emits a light, the The light passes through the first lens and the second lens in sequence, and the light is reflected by the reflector out of a first light outlet of the first tube, and passes through this structure to simultaneously perform laser treatment and scanning optical image confirmation treatment Site and monitoring efficacy of treatment.

In order to achieve the above-mentioned purposes and effects, the present invention provides an optical structure of an endoscope, which includes: a first tube, an optical fiber, a first lens, a second lens and a reflector, the first One side of a pipe is pierced with a first light outlet, the optical fiber is arranged on the inner side of the first pipe, the first lens is arranged on the inner side of the first pipe, and is adjacently arranged on one of the optical fibers side, there is a first angle between the first lens and the side of the first tube away from the optical fiber, the second lens is arranged on the inner side of the first tube, and is adjacent to the first lens away from the On the side of the optical fiber component, there is a second angle between the second lens and the side away from the first lens, and the reflector is arranged on the inner side of the first tube and adjacent to the The second lens is far away from the side of the first lens, the position of the reflector corresponds to the position of the first light outlet, wherein the optical fiber part emits a light, and the light passes through the first lens to the second lens , the light is reflected from the first light outlet by the mirror; this structure can be used to simultaneously perform laser treatment and scan the optical image to confirm the treatment site and monitor the treatment.

In an embodiment of the present invention, the first light outlet is provided with a first transparent member.

In an embodiment of the present invention, wherein the first angle is greater than 5 degrees and less than 10 degrees.

In an embodiment of the present invention, wherein the second angle is greater than 5 degrees and less than 10 degrees.

In one embodiment of the present invention, it further includes a second pipe, and the second pipe is sheathed on an outer side of the first pipe.

In one embodiment of the present invention, one side of the second tube is pierced with a second light outlet, the position of the second light outlet corresponds to the position of the first light outlet, and the light passes through the first light outlet through the second light outlet.

In an embodiment of the present invention, a second transparent member is disposed on the second light outlet.

In one embodiment of the present invention, a first motor is further included, the first motor is arranged at one end of the first pipe, and the first motor controls the rotation of the first pipe.

In an embodiment of the present invention, a second motor is further included, and the second motor is disposed on one side of the first motor, and the second motor controls the left and right movement of the first motor and the first pipe member.

In order to enable your review committee members to have a further understanding and understanding of the characteristics of the present invention and the achieved effects, the following examples and accompanying descriptions are hereby provided:

The present invention provides an optical structure of an endoscope, which utilizes one side of the first pipe to pass through a first light exit, the optical fiber is arranged inside one of the first pipe, and the first lens is arranged on the first The inner side of the tube is arranged adjacent to one side of the optical fiber, the second lens is arranged on the inner side of the first tube and adjacent to the side of the first lens away from the optical fiber, the second lens A lens and the second lens respectively have an angle, the reflector is arranged on the inner side of the first tube, and is adjacently arranged on the side of the second lens away from the first lens, and the position of the reflector corresponds to the The position of the first light outlet.

Please refer to Fig. 1, which is a structural schematic diagram of an embodiment of the present invention, as shown in the figure, it is an optical structure of an endoscope, which includes a first tube 10, an optical fiber 20, and a first lens 30 , a second lens 40 and a reflective mirror 50 ; the optical fiber component 20 , the first lens 30 , the second lens 40 and the reflective mirror 50 are disposed on an inner side of the first tube component 10 .

Referring to Fig. 1 and Fig. 2 again, Fig. 2 is an enlarged schematic view of the structure of an embodiment of the present invention. As shown in the figure, in this embodiment, one side of the first tube 10 is provided with a first light-emitting Port 12, which communicates with the inner side of the first pipe member 10, the optical fiber member 20 is inserted into the inner side of the first pipe member 10, the first lens 30 is adjacent to one side of the optical fiber member 20, and the There is a first angle θ1 between the first lens 30 and the side of the first tube 10 away from the optical fiber 20, which makes the first lens 30 inclined, and the second lens 40 is adjacent to the first lens 30. There is a second angle θ2 between the second lens 40 and the first tube 10 away from the side of the optical fiber member 20 away from the side of the first lens 30, which makes the second lens 40 tilt, and the mirror 50 is adjacently arranged on the side of the second lens 40 away from the first lens 30, and the position of the reflector 50 corresponds to the position of the first light outlet 12; wherein, the material of the first tube 10 can be metal, Plastic, the present invention is not limited here.

Continuing the above, in this embodiment, the first pipe member 10 and the optical fiber member 20 are connected to a light source 80, the light source 80 generates a light L1 and is transmitted by the optical fiber member 20, as shown in Figure 1, the optical fiber member 20 The light L1 is emitted to the inside of the first tube 10, the light L1 passes through the first lens 30 to form a diffused light L2, and the light L2 hits the second lens 40 and passes through the second lens 40 to form a A ray L3 after correction, the ray L3 shoots to the reflector 50 again, and is reflected by the reflector 50 out of the first light outlet 12 to complete the light path of this embodiment; wherein, the light source 80 uses a laser The light source for laser surgery and the light source for optical coherence tomography (OCT) can be used at the same time or individually, only need to connect the optical fiber 20 to the light source to be used.

Continuing the above, in this embodiment, because the energy of the laser light source used in this embodiment is strong (up to several watts to tens of watts), if it reflects on the surface of the optical element, the light rays L1, 2, and 3 will go to Retroreflection will cause damage to the optical fiber part 20 or the first lens 30 and the second lens 40 or even burn the optical fiber part 20, and only one set of lenses will still have reflected light back to the optical fiber part 20, such as The first and second angles θ1 and θ2 of the first and second lenses 30 and 40 are the same, which will still cause the light rays L1, 2 and 3 to resonate between the lenses. If the energy accumulates to a certain amount, it will still cause optical components Therefore, the present embodiment utilizes the first lens 30 and the second lens 40 with different oblique angles, so that the light rays L1, 2 will not be confined between the first and second lenses 30, 40, and energy accumulation And then produce the destruction of optical element, so the first, second lens 30,40 of different inclination directions can prevent the destruction of the optical element that reflected light produces; degrees and less than 10 degrees, the second angle θ2 is greater than 5 degrees and less than 10 degrees.

Please refer to Figure 3, which is a schematic diagram of the motor structure of an embodiment of the present invention. As shown in the figure, in this embodiment, a second pipe 60 is further included, and the second pipe 60 of this embodiment is an endoscope (endoscopy) structure, the second tube 60 is sleeved on the outside of the first tube 10 to protect the first tube 10 and its internal components from external dirt (such as human tissue, body fluid), and Including a first motor 72 and a second motor 74, the first motor 72 is arranged at one end of the first pipe 10, the first motor 72 is an element used to control the rotation of the first pipe 10, the second motor 74 is disposed on one side of the first motor 72 , and the second motor 74 drives and controls the first motor 72 and the components that move left and right of the first pipe 10 .

Continuing from the above, in this embodiment, a second light outlet 62 is provided on one side of the second tube 60, and the position of the second light outlet 62 corresponds to the position of the first light outlet 12, so that the light L3 passes through the first light outlet. The first light outlet 12 then passes through the second light outlet 62 .

Referring again to Fig. 3 and Fig. 4A to Fig. 4B, Fig. 4A to Fig. 4B are schematic diagrams of the action of the embodiment of the present invention. As shown in the figure, in this embodiment, the second motor 74 drives the first The motor 72 moves left and right, and the first motor 72 drives the first pipe 10 to move left and right in the second pipe 60 (as shown in FIG. 3 ), because the movement of the first pipe 10 makes the first pipe 10 The emitted light L3 moves together, and the first motor 72 drives the first tube 10 to rotate, because the rotation of the first tube 10 makes the light L3 emitted by the first tube 10 rotate together, wherein the light L3 is driven by The movement and rotation of the first tube 10 forms a scanning part 3 along its path, and the scanning part 3 is the area where the patient needs to scan tissue or undergo laser surgery.

In this embodiment, the optical fiber 20 , the first lens 30 , the second lens 40 and the reflector 50 are arranged in the first tube 10 , and the light L1 is emitted by the light source 80 and transmitted by the optical fiber 20 . The light L1 passes through the first lens 30 to form the light L2, the light L2 passes through the second lens 40, the light L2 passes through the second lens 40 to form the light L3, and the light L3 is sent to the reflection The mirror 50 also reflects one of the first light outlets 12 of the first tube 10 for laser therapy or optical image scanning to confirm the treatment site and monitor the treatment.

Please refer to Fig. 5, which is a structural schematic diagram of other components of the embodiment of the present invention. As shown in the figure, this embodiment is based on the above-mentioned structure in which a first transparent part 14, and a second transparent part 64 is set at the second light outlet 62 of the second pipe part 60, and the first transparent part 14 and the second transparent part 64 are used to block foreign matter contamination outside the second pipe part 60, And let the light L3 pass through to perform optical scanning or laser surgery; the connection and action relations of other components in this embodiment are the same as those in the above embodiment, so they will not be described again.

In summary, the present invention provides an optical structure of an endoscope, which uses optical images to simultaneously monitor laser treatment, and designs a miniature catheter or probe structure that can simultaneously overlap the optical image scanning range and The laser treatment beam focuses the two beams on the test end at the same time. Through this microcatheter, the laser treatment can be carried out at the same time, and the treatment site can be confirmed and the treatment effect can be monitored with optical images, which solves the problem that the conventional endoscope does not combine laser treatment. And the problem of optical image scanning; set it in an endoscope, and apply it to the skin, gastrointestinal tract, cardiovascular, oral cavity, brain, nasal cavity, chest cavity, liver and other areas for optical image-guided laser therapy.

Therefore, the present invention is novel, progressive and can be used in industry. It should meet the patent application requirements of my country's patent law. I file an invention patent application in accordance with the law. I pray that the bureau will grant the patent as soon as possible. I sincerely pray.

However, the above is only an embodiment of the present invention, and is not used to limit the scope of the present invention. Therefore, all equivalent changes and modifications made in accordance with the shape, structure, characteristics and spirit described in the scope of the patent application of the present invention, All should be included in the patent application scope of the present invention.

3: Scanning area 10: The first pipe fitting 12: The first light outlet 14: The first transparent piece 20: Optical fiber parts 30: First lens 40: second lens 50: Mirror 60: Second pipe fitting 62: Second light outlet 64: Second transparent part 72: The first motor 74:Second motor 80: light source L1: light L2: light L3: light θ1: first angle θ2: second angle

Figure 1: It is a structural schematic diagram of an embodiment of the present invention; Figure 2: It is a schematic enlarged view of the structure of an embodiment of the present invention; Figure 3: It is a schematic diagram of the motor structure of an embodiment of the present invention; Fig. 4A to Fig. 4B: it is the operation diagram of the embodiment of the present invention; And Fig. 5: It is a structural schematic diagram of other components of the embodiment of the present invention.

10: The first pipe fitting

12: The first light outlet

20: Optical fiber parts

30: First lens

40: second lens

50: Mirror

L1: light

L2: light

L3: light

θ1: first angle

θ2: second angle

Claims (3)

An optical structure of an endoscope, which includes: a first tube, one side of which is pierced with a first light outlet; a second tube, the second tube is sleeved on the outside of the first tube; an optical fiber , which is arranged on the inner side of the first tube; a first lens, which is fixedly arranged on the inner side of the first tube, and is adjacent to one side of the optical fiber, the first lens and the first tube There is a first angle between one side away from the optical fiber part, wherein the first angle is greater than 5 degrees and less than 10 degrees; a second lens, which is fixedly arranged on the inner side of the first pipe part, and is adjacently arranged On the side of the first lens away from the optical fiber, there is a second angle between the second lens and the first tube on the side away from the first lens, wherein the second angle is greater than 5 degrees and less than 10 degrees degree; and a mirror, which is arranged on the inner side of the first tube, and adjacently arranged on the side of the second lens away from the first lens, the position of the mirror corresponds to the position of the first light outlet; Wherein, the optical fiber part emits a light, and the light passes through the first lens to the second lens, and the light is reflected by the reflector out of the first light outlet; wherein one side of the second pipe part passes through a The second light outlet, the position of the second light outlet corresponds to the position of the first light outlet, and the light passes through the first light outlet and then passes through the second light outlet. The optical structure of the endoscope according to claim 1, wherein a first transparent member is arranged on the first light outlet. The optical structure of the endoscope according to claim 1, wherein a second transparent member is arranged on the second light outlet.

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