CN201692149U - Head-mounted intraocular tumor laser therapy device - Google Patents

Abstract

The utility model provides a head-mounted intraocular tumor laser treatment device. The device consists of a head-mounted fixture, an indirect ophthalmoscope, a laser irradiation device and a non-contact lens; the non-contact lens is a biconvex lens; it is characterized in that: the laser irradiation device includes a laser generating device, for The laser fiber and the laser head that output the laser beam; the laser head includes a set of focusing lenses, a reflector for changing the optical path, and a laser head housing that accommodates the laser output end of the laser fiber, the focus lens and the reflector; The indirect ophthalmoscope and the laser head of the laser irradiation device are fixed on the head-mounted fixing device; the focal length of the focusing lens is 10-100 mm, and the focal length of the non-contact lens is 50 mm. The device makes the diameter of the laser spot on the retina continuously adjustable within the range of 1-10 mm or fixed within the range of the spot, thereby achieving the purpose of treating intraocular tumors and improving the treatment efficiency.

Description

Head-mounted intraocular tumor laser therapy device

technical field

The utility model relates to a head-mounted intraocular tumor laser treatment device.

Background technique

In the ophthalmic laser application system, the laser light is generally exported to the ophthalmic slit lamp microscope or indirect ophthalmoscope through an optical fiber, and then the laser light is introduced into the fundus by an additional laser transmission device on it. For patients who can adopt a sitting position, the laser light is generally transmitted by an ophthalmic slit lamp microscope attachment; for patients who cannot adopt a sitting position, a head-mounted indirect ophthalmoscope attachment is generally used to transmit laser light. At present, there is no laser treatment device dedicated to the treatment of intraocular tumors. The laser spot transmitted by the indirect ophthalmoscope attachment device used for the treatment of intraocular tumors is generally less than 0.5 mm. Since the diameter of intraocular tumors is generally much larger than 0.5 mm, the treatment It takes a long time to use such a small spot photocoagulation or hyperthermia, and the efficiency is very low. Therefore, this small spot laser device is not suitable for treating intraocular tumors.

Utility model content

In order to solve the above problems, the utility model provides a head-mounted intraocular tumor laser treatment device with a laser spot larger than 0.5 mm and high treatment efficiency.

The head-mounted intraocular tumor laser treatment device provided by the utility model is composed of a head-mounted fixing device 1, an indirect ophthalmoscope 2, a laser irradiation device 3 and a non-contact lens 4; the non-contact lens 4 is a biconvex lens; The irradiation device 3 comprises a laser generating device 9, a laser fiber 13 and a laser head for emitting the output laser beam from the laser generating device; 12 and the laser head casing that accommodates the laser output end of the laser fiber, the focusing lens and the mirror; the laser head of the indirect ophthalmoscope 2 and the laser irradiation device 3 is fixed on the head-mounted fixture 1; the focusing lens group 10 The focal length is 10-100mm, and the focal length of the non-contact lens 4 is 50mm. Such a structural design projects the laser light onto the fundus retina after passing through the non-contact lens 4, and can form a fixed laser spot with a diameter of 1-10 mm.

The laser irradiation device 3 may also include a zoom adjustment device 11 that can adjust the focal length of the focus lens; the zoom adjustment device that can adjust the focal length of the focus lens can adjust the focal length of the focus lens group 10 of the laser irradiation device 3 in the range of 10-100mm internal changes. This can ensure that the laser light is projected on the fundus retina, and the focal length can be adjusted by the zoom adjustment device to form a laser spot with a diameter of 1-10 mm.

The focusing lens group 10 can be composed of two lenses whose optical centers are on a straight line, one of which is a cemented lens of a plano-concave mirror and a biconvex mirror, and the other is a biconvex lens.

The focusing lens group 10 may be composed of three biconvex lenses whose optical central axes are on a straight line.

The focal length of the focusing lens group 10 of the laser irradiation device 3 is a fixed focal length, and the focal length is 20mm. Such a combined non-contact lens can form a spot with a diameter of 2mm.

The indirect ophthalmoscope can be composed of an illuminating light source 5, a focusing lens 6 for converging the light emitted by the illuminating bulb, an eyepiece lens 7 behind the observation hole and a reflector 8 for changing the illuminating light path.

The material of the above-mentioned focusing lens group 10 is not limited, and the radius of curvature of the included lenses is not limited.

In the above device, the indirect ophthalmoscope and the non-contact lens constitute an observation system for the fundus retina. The laser irradiation device 3 is attached to the head-mounted indirect ophthalmoscope, and the laser is projected onto the retina of the fundus after passing through the non-contact lens to form a laser spot with a diameter of 1-10 mm, which can make the diameter of the laser spot on the retina 1-10 mm Continuous change between; laser spot diameter can also be fixed at any value or any number of values between 1-10 mm. The enlarged laser spot greatly improves the treatment efficiency of intraocular tumors.

Description of drawings

Fig. 1 is a head-mounted intraocular tumor laser therapy device of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the head-mounted intraocular tumor laser treatment device of the present invention.

Fig. 3 is a schematic diagram of the focusing lens group (10) of the head-mounted intraocular tumor laser therapy device of the present invention.

Fig. 4 is a schematic diagram of another example of the focusing lens group (10) of the head-mounted intraocular tumor laser treatment device of the present invention.

Detailed ways

As shown in Figure 1 and Figure 2, it is a head-mounted intraocular tumor laser treatment device of the present invention. It consists of a head-mounted fixture 1, an indirect ophthalmoscope 2, a laser irradiation device 3 and a non-contact lens 4;

Wherein, the laser irradiation device 3 comprises a laser generating device 9, a laser fiber 13 and a laser machine head for emitting the output laser beam from the laser generating device; Mirror 12 and the laser head casing that accommodates the laser output end of the laser fiber, the focusing lens and the mirror; the laser head of the indirect ophthalmoscope 2 and the laser irradiation device 3 is fixed on the head-mounted fixture 1; the focusing lens group 10 has a focal length of 10-100mm. The non-contact lens 4 is a biconvex lens; the focal length of the non-contact lens 4 is 50 mm. Such a structural design projects the laser light onto the fundus retina after passing through the non-contact lens 4, and can form a fixed laser spot with a diameter of 1-10 mm.

The laser irradiation device 3 can also include a zoom adjustment device 11 that can adjust the focal length of the focus lens; the zoom adjustment device that can adjust the focal length of the focus lens can adjust the focal length of the focus lens group 10 of the laser irradiation device 3 to vary within the range of 10-100mm . This can ensure that the laser light is projected on the fundus retina, and the focal length can be adjusted by the zoom adjustment device to form a laser spot with a diameter of 1-10 mm.

The indirect ophthalmoscope is a conventional indirect ophthalmoscope, which generally consists of an illumination source 5, a focusing lens 6 for converging the light emitted by the illumination bulb, an eyepiece lens 7 behind the observation hole, and a reflector 8 for changing the illumination light path.

As shown in Figure 3, it is an embodiment of the present utility model, focusing lens group 10, is made of two lenses whose optical axis is on a straight line, one of which is a cemented lens of a plano-concave mirror and a biconvex mirror, The other piece is a biconvex lens. The two lenses of the focusing lens group can be equipped with a zoom adjustment device, and the focal length can be adjusted by adjusting the distance between the two lenses. The size of the focal length can be adjusted to control the diameter of the spot between 1-10mm; it is also possible to directly set the focal length of the focusing lens group within the range of 10-100mm without installing the zoom adjustment device. For example, when the focal length is set to 20mm, such Combined with a 20D non-contact lens (f=50), it can form a spot with a diameter of 2mm.

As shown in FIG. 4 , in one embodiment of the present invention, the focusing lens group 10 is composed of three biconvex lenses L1 , L2 , and L3 whose optical central axes are on a straight line. Among them, L2 and L3 can be moved by the zoom device, and the moving distances are D1 and D2 respectively. D1 and D2 meet certain requirements, and can realize the continuous change of the laser spot size on the retina between 1-10 mm.

The material of the above-mentioned focusing lens group 10 is not limited, and the radius of curvature of the included lenses is not limited.

In the above device, the indirect ophthalmoscope and the non-contact lens constitute an observation system for the fundus retina. The laser irradiation device 3 is attached to the head-mounted indirect ophthalmoscope, and the laser is projected onto the retina of the fundus after passing through the non-contact lens to form a laser spot with a diameter of 1-10 mm, which can make the diameter of the laser spot on the retina 1-10 mm The laser spot diameter can also be fixed at any value or any number of values between 1-10 mm. The spot diameter is set according to the size and growth site of the intraocular tumor. The enlarged laser spot greatly improves the treatment efficiency of intraocular tumors. For example, when the focal length of the focusing lens group 10 is set to 20mm, combined with a non-contact lens to form a spot with a diameter of 2mm, the laser photocoagulation treatment of intraocular tumors will improve the treatment efficiency by 4-5 times compared with ordinary ophthalmic laser application systems.

Claims (10)

1. wear-type intraocular tumour device for laser therapy, by wear-type fixture (1), indirect ophthalmoscope (2), laser irradiation device (3) and noncontact mirror (4) are formed; Noncontact mirror (4) is a biconvex lens; It is characterized in that: laser irradiation device (3) comprises laser generator (9), be used for laser fiber (13) and laser heddpiece that the outgoing laser beam from laser generator is penetrated; Described laser heddpiece comprises one group of focus lens group (10), is used to change the illuminator (12) of light path and the laser heddpiece shell that holds laser ejecting end, condenser lens and the illuminator of laser fiber; The laser heddpiece of described indirect ophthalmoscope (2) and laser irradiation device (3) is fixed on the wear-type fixture (1); The focal length of focus lens group (10) is 10-100mm, and the focal length of described noncontact mirror (4) is 50mm.

2. wear-type intraocular tumour device for laser therapy according to claim 1 is characterized in that: described laser irradiation device (3) also comprises the zoom adjusting device (11) that can adjust the condenser lens focal length; The focal length of the focus lens group (10) of the described zoom adjusting device scalable laser irradiation device (3) of adjusting the condenser lens focal length changes in the scope of 10-100mm.

3. wear-type intraocular tumour device for laser therapy according to claim 1 and 2, it is characterized in that: described focus lens group (10), constitute by two photocentre axles lens point-blank, wherein a slice is the balsaming lens of a plano-concave mirror and a biconvex mirror, and another sheet is a biconvex lens.

4. wear-type intraocular tumour device for laser therapy according to claim 1 and 2 is characterized in that: described focus lens group (10), form by three photocentre axles biconvex lens point-blank.

5. wear-type intraocular tumour device for laser therapy according to claim 3 is characterized in that: the focal length of the focus lens group (10) of described laser irradiation device (3) is a fixed focal length, and focal length is 20mm.

6. wear-type intraocular tumour device for laser therapy according to claim 4 is characterized in that: the focal length of the focus lens group (10) of described laser irradiation device (3) is a fixed focal length, and focal length is 20mm.

7. wear-type intraocular tumour device for laser therapy according to claim 1 and 2, it is characterized in that: described indirect ophthalmoscope is by lighting source (5), be used to converge the condenser lens (6) of the light of illuminating lamp emission, be positioned at the eyepiece camera lens (7) behind the observation port and change illuminator (8) composition of illumination path.

8. wear-type intraocular tumour device for laser therapy according to claim 3, it is characterized in that: described indirect ophthalmoscope is by lighting source (5), be used to converge the condenser lens (6) of the light of illuminating lamp emission, be positioned at the eyepiece camera lens (7) behind the observation port and change illuminator (8) composition of illumination path.

9. wear-type intraocular tumour device for laser therapy according to claim 4, it is characterized in that: described indirect ophthalmoscope is by lighting source (5), be used to converge the condenser lens (6) of the light of illuminating lamp emission, be positioned at the eyepiece camera lens (7) behind the observation port and change illuminator (8) composition of illumination path.

10. wear-type intraocular tumour device for laser therapy according to claim 5, it is characterized in that: described indirect ophthalmoscope is by lighting source (5), be used to converge the condenser lens (6) of the light of illuminating lamp emission, be positioned at the eyepiece camera lens (7) behind the observation port and change illuminator (8) composition of illumination path.

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