CN2431843Y

CN2431843Y - Medical hard-tube endoscope

Info

Publication number: CN2431843Y
Application number: CN 00221406
Authority: CN
Inventors: 陈梅生
Original assignee: 陈梅生
Current assignee: Fujian Meisheng Medical Technology Co., Ltd
Priority date: 2000-08-11
Filing date: 2000-08-11
Publication date: 2001-05-30
Anticipated expiration: 2010-08-11

Abstract

The utility model relates to a medical hard tube endoscope. The utility model is characterized in that an endoscope head group is composed of a plurality of optical lenses with minor diameters which are installed in an outer housing; a plurality of roots of optical fibers are installed between the outer housing and the optical lenses to form an annular optical fiber transmission channel; illuminating light used as cold light source can be directly transmitted through the annular optical fiber transmission channel to an image taking port at the front end of the endoscope head group to illuminate the position to be observed of a patient to bring convenience to image formation. An imaging light path and an illuminating light path of the utility model don't interfere mutually, so that the utility model has the advantages of favorable illuminating effect, favorable image sharpness, high resolution, simple structure, and convenient operation and use. The utility model can also be used as a medical endoscope in various occasions of other aspects.

Description

Medical hard-tube endoscope

This utility model relates to a kind of medical apparatus and instruments designing technique, and particularly a kind of medical hard-tube endoscope is applicable to that the inspection in device palaces such as making human oral cavity, nose larynx, auditory meatus, eyes, rectum, vagina and the medical endoscope of the auxiliary usefulness of operation use.

Existing stomatology endoscope or other medical endoscopes have two kinds, and a kind of is endoscope optical, and another kind is a photoelectricity endoscope.Endoscope optical has certain limitation for observation, and user must rely on optical elements such as eyepiece or reflecting mirror to observe focus; And photoelectricity endoscope can be converted to optical imagery the signal of telecommunication, and outputs to video equipment for observation.Present photoelectricity endoscope makes things convenient for filmed image for sufficient light source is arranged, two kinds of designs are generally arranged, a kind of is to add bulb in the endoscope head place to make luminous source, the problem that this design exists is: if excessive whole the endoscope's shell diameter volume of bulb can be very big, also can produce high temperature, make patient produce sense of discomfort, if with tiny bulb, the shell volume size reduces, and temperature can lower, but brightness of illumination is not enough relatively again.Another kind is to adopt sensitive micro photo electric image converter, directly is contained in endoscope distal end, and uses the micro lighting lamp, but this method makes the cost cost too high.

The purpose of this utility model provides a kind of improved medical hard-tube endoscope, makes to have endoscope to stretch into portion tiny, and good illumination effect, image definition is good, the high and little effect of cross-color degree of image resolution.

This utility model is realized with following technical scheme, it comprises that shell (also claims shell, be divided into mirror body portion and handle portion), lens group, photographic head (being the photoelectric image transducer), composition such as cold light source and video equipment, it is characterized in that lens group is to be made of the optical glass that a plurality of minor diameters in the enclosure are installed, between shell and optical glass, be equiped with many optical fiberss to constitute the annular fiber transmission channel, treat look-out station in order to imaging as what the houselights of cold light source can directly be sent to the image capture mouth of lens group front end by this annular fiber transmission channel and illuminate the patient, and allow the doctor observe affected part focus situation.

Operation principle of the present utility model is as follows: during use, the cold light source houselights by many fiber optic transmissions in the annular fiber transmission channel outside the image capture mouth (also claiming the light source delivery outlet) of lens group front end and the lesions position of illumination needs observation, the position that lens group will need to observe is imaged on the camera chip in endoscope's photographic head, the picture that camera chip will become (being optical signal) is converted to video signal (picture signal) and outputs in video equipment or the computer, thereby realizes the collection of image.Compared with the prior art, this utility model is formed elongated optical lens group by a plurality of optical glasss, it is little to make endoscope stretch into the external diameter of portion, be beneficial to and stretch into the human intracavity, and many optical fiberss are distributed between shell and the optical glass, imaging optical path and illumination path are not disturbed mutually, make good illumination effect, image definition is good, the resolution height.

Below in conjunction with accompanying drawing embodiment concrete structure principle of the present utility model is described in further detail.

Fig. 1 is a kind of assembly structure sketch map of the present utility model (cold light source is installed in the shell outside).

Fig. 2 is the cutaway view (enlarged drawing) of Figure 1A-A direction.

Fig. 3 is the structural representation that a kind of cold light source (illuminating lamp) is directly installed on shell inside (afterbody).

With reference to accompanying drawing, wherein: 1～shell (shell), 2～total reflection prism (turning to prism), 3～lens group, 4～photographic head (in establish as the photoelectric image transducer camera chip), 5～annular fiber transmission channel (also claiming the ring-type optical fibre tube), 6～video equipment (or computer), 7～cold light source (illuminating lamp), the handle portion of 8～shell (shell), 9～image capture mouth (also claiming light source delivery outlet or image entrance port), the mirror body portion of 10～shell (shell), 11～optical fibers, 12～illuminating lamp, 13～illuminating lamp holder, 14～optical fiber mount pad.

With reference to accompanying drawing, this utility model also can have following technical characterictic when specific design is made:

One, the image capture mouth 9 of this endoscope can be designed to be positioned at the forward sight type structure (figure slightly) of lens group 3 positive front ends, also can be designed to the image capture mouth is positioned at the lateral side-view type structure of lens group front end (or stravismus type) structure, at this moment should in the image capture mouth, be equiped with total reflection prism 2.Prismatical effect is the body part that forms an angle with shank can be turned to easily reflection and be imaged on the photographic head to observe for the doctor.

Two, described illuminating lamp 12 as cold light source both can be located at housing exterior and also can be located at enclosure.The position that the lens group that sheet is formed will need to observe is imaged on the camera chip, and by camera chip again optical signal is converted to image (video) signal and output to video equipment or computer on to realize the collection of image.The video signal that utilizes this endoscope to export can be used as the signal source of monitor, television set etc.; Also available computers is converted to digital signal with video signal and uses as Flame Image Process for computer, and also the available video controller also can directly be converted to processing such as video signal amplifies, freezes usb signal and use for computer.

In addition, this utility model also can be by changing the diameter or the thickness of eyeglass, thereby the size that changes lens group adapts to different application targets with length, thereby become the use of otherwise medical hard-tube endoscope.

Claims

1, a kind of medical hard-tube endoscope, it comprises shell (1), lens group (3), photographic head (4), cold light source (7), video equipment (6) is formed, it is characterized in that lens group (3) is to be made of the optical glass that a plurality of minor diameters in the enclosure are installed, between shell and optical glass, be equiped with many optical fiberss constituting annular fiber transmission channel (5), treat that as what the houselights of cold light source (7) can directly be sent to the image capture mouth (9) of lens group front end by this annular fiber transmission channel (5) and illuminate the patient look-out station is in order to imaging.

2, medical hard-tube according to claim 1 endoscope is characterized in that the illuminating lamp (12) as cold light source both can be located at shell (1) outside, also can be located at enclosure.

3, frequency mirror in the medical hard-tube according to claim 1, it is characterized in that the image capture mouth (9) of endoscope to be designed to be positioned at the forward sight type structure of the positive front end of lens group (3), also can be designed to image capture mouth (9) is positioned at lateral side-view type structure of lens group front end or stravismus type structure, at this moment should in the image capture mouth, be equiped with total reflection prism (2).

4, according to claim 1 or 2 or 3 described medical hard-tube endoscopies, it is characterized in that on photographic head (4), being equiped with a camera chip as the photoelectric image transducer, the position that the lens group of being made up of optical glass (3) will need to observe is imaged on the camera chip, and by camera chip again optical signal is converted to picture signal and output to video equipment or computer on to realize the collection of image.