CN2220825Y - Lachrimal endoscope - Google Patents

Abstract

The utility model relates to a lacrimal endoscope. A camera is connected with one end of a microscopic amplifying system which is provided with a focusing device, and the other end is connected with a self-focusing objective pin and an illumination cold-light source. A self-focusing lens is used as an objective, and a low chromatic aberration self-focusing lens is used as an image transmission lens. Moreover, the utility model can realize the synchronization of light and the lens. Therefore, the utility model not only can be used for observing the morphology of pathological changes in a lacrimal passage directly, but also can carry out photography directly. The utility model can realize the inspection of a standardized lacrimal endoscope. Consequently, reliable basis for the diagnoses of diseases of the lacrimal passage can be provided.

Description

Lacrimal passage endoscope

This utility model relates to a kind of instrument that is used to diagnose the lacrimal passage disease, particularly lacrimal passage endoscope.

Usually, to the inspection of pathological changes situation in the lacrimal passage, mainly undertaken by irrigation of lacrimal passage and X line radiography.Because the tear stains caliber is very thin, be difficult to enter the pathological change form of its interior mucosa of direct observation in the lacrimal passage.Early eighties, once beginning to have adopted a kind of external diameter abroad is the lacrimal passage endoscope of 1.08mm, it is made up of self-focusing object lens contact pin system and micro-amplification system.But, have only self-focusing to pass in the contact pin of this endoscope, and lighting problem adopt the outer transparent optical of skin to solve as lens, this has just influenced the biography picture element amount and the clinical result of use thereof of endoscope greatly.And the focal length of this endoscope can't be adjusted, and also can't photograph, and makes troubles for observation and teaching.

The purpose of this utility model is to provide a kind of lacrimal passage endoscope, and as lighting source, the pathological changes situation in the direct observation lacrimal passage effectively, and can directly taking pictures is for the diagnosis of lacrimal passage disease provides reliable foundation with the optical fibers cold light source for it.

Its concrete solution is: the micro-secondary magnification eyepiece place at micro-amplification system outer cylinder body is provided with focussing mechanism.And be connected with photographing unit by eyepiece mount and coupled camera interface at outer cylinder body one end of micro-amplification system, and constituting the system that takes pictures, it can realize stable the butt joint with the micro-secondary magnification eyepiece of micro-amplification system.Be connected with by the self-focusing objective holder that links to each other with outer cylinder body at the other end of micro-amplification system and can realize light, the synchronous self-focusing object lens contact pin of mirror, the optical fibers cold light source is by injecting light beam joint and light beam interface socket and being positioned at self-focusing objective holder one side and coupled logical light beam joint is connected, and can guarantee that the interior light of self-focusing object lens contact pin, mirror are synchronous.

But self-focusing object lens spade pin is by trocar sheath and is successively set on illuminated light guide fibre bundle, inner sleeve in the trocar sheath, is sleeved on the self-focusing visual field object lens of inner sleeve inner chamber and contacted low aberration passes and constitutes as lens with it.

This utility model is owing to be connected with photographing unit at the end with the micro-amplification system that can adjust coke installation, and the other end is connected with self-focusing object lens spade pin and as the cold light source of synchronous lighting light source.It makes object lens with GRIN Lens, low aberration GRIN Lens is done to pass as lens, and with the optical fibers cold light source as the synchronous lighting light source, so its pathological change form in can not only the direct observation lacrimal passage, and can also directly take pictures, can realize standardization lacrimal passage splanchnoscopy, thereby provide reliable foundation for the diagnosis of lacrimal passage disease.

Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings.

Fig. 1 is a lacrimal passage endoscope structure front view.

Fig. 2 is vertical cutaway view Amplified image of self-focusing object lens contact pin.

Fig. 3 is that A is to view.

Among Fig. 1, be threaded with the eyepiece stalk (7) of micro-secondary magnification eyepiece device by the connecting cylinder (8) that is threaded with it at outer cylinder body (9) one end inner chambers.This micro-secondary magnification eyepiece device is by eyepiece mount (3), setting-in is gone into two flat field photographic eyepieces (5) of eyepiece mount (3) inner chamber, between two flat field photographic eyepieces (5), separate by eyepiece spacer ring (4), eyepiece stalk (7), the eyepiece positioning seat (10), locating piece (11) and the compacting ring (12) that are threaded on eyepiece stalk (7) one ends constitute.Eyepiece focusing nut (6) has been threaded in connecting cylinder (8) and the contacted position of eyepiece mount (3).Be set with micro-one-level enlarging objective device in outer cylinder body (9) other end inner chamber, it mainly by objective tube (15), be inlaid in the achromatism flat-field objective (13) in the objective tube (15), trim ring (14), form every aperture (16).Plug-in mounting is gone in the self-focusing objective holder (17) and is threaded with outer cylinder body (9) by self-focusing objective holder (17) with its gluing self-focusing object lens contact pin (18) that connects, and seal with optical cement, and self-focusing objective holder (17) be threaded every aperture (16), and seal with optical cement.Optical fibers cold light source (22) by inject light beam interface (21) and be threaded with it and with the light beam interface socket (20) of optical cement sealing with being threaded and being sealed in optical cement that self-focusing objective holder (17) is gone up and the light velocity joint (19) that is communicated with it is threaded, and adopt optical cement to seal.

Among Fig. 2, Fig. 3, be set in to be bonded with around the sidewall outside the inner sleeve (26) in the trocar sheath (28) and pass light fibre-optic bundle (27), and every fibre-optic diameter is 0.08mm, long 80mm, this fibre-optic bundle contacts with trocar sheath (28) internal chamber wall, inner chamber in inner sleeve (26), the low aberration of using up gluing self-focusing visual field object lens (24) that are connected to column and column from left to right passes as lens (25), constitutes self-focusing object lens contact pins (18).And self-focusing visual field object lens are long to be 2.1mm, and diameter is 0.58mm, and numerical aperture N-A is 0.36, and the angle of visual field is 45 °; Low aberration passes as the long 68.7mm of being of lens, and diameter is 0.58mm, and numerical aperture is 0.12; The effective length of self-focusing object lens contact pin is 55mm, and external diameter is 1.2mm, and the angle of visual field is 45 °, resolution (whole optical system effect) 80 lines are right/and mm, pin end illumination is 13Lux, micro-enlargement ratio is 100 times.Simultaneously, trocar sheath (28) is made by stainless steel tube, and its external diameter is 1.2mm, and internal diameter is 0.94mm; Inner sleeve (26) is made by stainless steel tube, and its external diameter is 0.7mm, and internal diameter is 0.6mm.

During use, produce cold light source and the biography fiber optics bundle in it by optical fibers cold light source (22), inject light beam joint (21), light beam interface socket (20) and light beam joint (19), fibre-optic bundle (27) in the self-focusing object lens contact pin passes self-focusing object lens contact pin head end, mucosa in the lacrimal passage is illuminated, by self-focusing visual field object lens (24) mucosal pattern in the lacrimal passage is obtained again, after low aberration biography is passed to micro-one-level enlarging objective (13) as lens (25), repeated transmission amplifies flat field photographic eyepiece (5) for micro-secondary, then, by photographing unit (1) picked-up image, perhaps amplify the interior pathological change form of flat field photographic eyepiece (5) direct observation lacrimal passage by micro-secondary.

Claims (2)

1, a kind of lacrimal passage endoscope, comprise self-focusing object lens contact pin and micro-amplification system, the outer cylinder body (9) that it is characterized in that micro-amplification system is provided with focussing mechanism (6), and be connected with photographing unit by eyepiece mount (3) and coupled camera interface (2) at outer cylinder body (9) one ends of micro-amplification system, constitute the system that takes pictures, and at outer cylinder body (9) other end of micro-amplification system, be connected with self-focusing object lens contact pin (18) by the self-focusing objective holder (17) that links to each other with outer cylinder body (9), cold light source (22) is by injecting light beam joint (21), light beam interface socket (20) be positioned at self-focusing objective holder (17) one sides and coupled logical light velocity joint (19) is connected.

2, lacrimal passage as claimed in claim 1 endoscope, it is characterized in that self-focusing object lens contact pin (18) is by trocar sheath (28) and is successively set on the interior fibre-optic bundle (27) of trocar sheath (28), inner sleeve (26) is contained in the interior self-focusing visual field object lens (24) of inner sleeve (26) and contacted low aberration biography constitutes as lens (25) with it.

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