CN2185903Y - Light guide needle and optical fibre liquid coupling for low intensity laser internal exposure - Google Patents

Abstract

The utility model relates to a light conducting needle and an optical fiber liquid coupling for low intensity laser internal exposure. The technique belongs to the field of medical laser. The technique adopts a light conducting needle which can be directly penetrated in bodies; proper liquids replace a focusing mirror, and are used for the connection of optical fiber; thus light can be transferred on to very thin optical fiber (light needles) from the main optical fiber; the loss of light energy on the two limiting surface of air and optical fiber is avoided; the light conducting efficiency of binding positions is enhanced. The technique is used for the low intensity laser internal (in blood) exposure. Because cost can be reduced, the light needle can be made into one time use. The danger of serious infection of the low intensity laser internal exposure is avoided.

Description

Light guide needle and optical fibre liquid coupling for low intensity laser internal exposure

The utility model relates to the liquid coupling device of a kind of low-intensity (swashing) light internal exposure with light guide needle and optical fiber, light transmitting fiber wherein, and promptly " light guide needle " part can directly be thrust in the body, and is coupled with liquid mode and second light transmitting fiber.

For medical science, low level laser has biological effect widely, and therefore the application in medical science more and more comes into one's own.A large amount of work has been done by external particularly Russia, Reference News was also reported on November 21st, 93 the 7th edition, we have more than 40 piece with the United States Medicine digest (MEDLINE) of computer index 88-93, be used for the treatment of myocardial infarction, pancreatitis etc., in fact its application prospect is more wide than this, the relevant photochemistry of recording on the MEDLINE and the research article of optical dynamic therapy have a hundreds of piece of writing (88-93) respectively, so low level laser will be the new very promising field that therapeutic treatment is learned.But the transmission of laser in human body is the problem of a technical difficulty, and particularly in today, AIDS(likes sick now), the infectious disease that hepatitis etc. are serious is threatening the mankind, and how avoiding cross-infection is maximum problem.Because whole optical fiber cost is very expensive, impossible disposable use does not allow autoclave sterilization etc. yet.If with optical fiber head and two sections ways of connecting of main fiber, the transmission of connecting portion light (coupling) also is a big problem.The technology of optical fiber coupling now all is the mode (referring to the laser medicine handbook, Tianjin Scientific English Translation publishing company, 1991) that adds condenser lens with middle, this is difficult to do for very thin optical fiber (laser accunputure), even if done like this, because the complexity of technology, cost is also very expensive.Therefore, because the existing optical fiber of usefulness in vivo of this problem, can only wipe means with thimerosal as sterilization.If having infection medical history such as hepatitis B, patient does for such sick body people, owing to there is not better way, and medical institutions that have even just carry out the blood internal-radiation therapy to patient with the such disinfection way of such optical fiber, this all too danger!

The purpose of this utility model provides the coupling unit between a kind of new light transmitting fiber, avoid the complex process and the higher shortcoming of cost that cause with Lens Coupling, and supporting therewith making can directly be thrust in the blood vessel light guide needle in the body.Reduced cost so widely, it is disposable that laser accunputure can be made, thereby avoided the infection problems of (in the blood) irradiation in the low level laser body.

The utility model is achieved in that the transmission of carrying out (swashing) light with liquid as intermediary, specifically: the top overcoat of main fiber is made certain vertebra degree, this vertebra degree is identical with the vertebra degree in the hole of syringe needle (annotate: syringe needle can directly thrust in the body) afterbody, the middle stamen of syringe needle studs with optical fiber, be inserted into when the top of main fiber after the hole of laser accunputure afterbody, optical fiber and the distance between the main fiber in the syringe needle are very near, between this third optical fiber, be added with a small amount of coupling liquid, (swashing) light transmits between two optical fiber by coupling liquid, coupling liquid is similar to the optical characteristics (refractive index) of stamen material in the light transmitting fiber, and with the liquid of its affinity, light can be transferred on the interior stamen of laser accunputure from first fibre-optic interior stamen preferably like this, avoided the loss of light to a great extent, improved the leaded light efficient of light transmitting fiber at binding site through two interfaces of air and optical fiber.

Utility model advantage compared with prior art has: (1) has greatly reduced cost, can make disposable use laser accunputure.(2) laser accunputure can directly thrust in the body (blood) and treats, and it is inserted from hollow tube after also can thrusting in the body with other hollow tube again.(3) (4) easy and simple to handle have avoided the problem of the possible cross-infection of low level laser blood internal therapy fully, and making this treatment might popularize (5), to carry out fibre-optic coupling with liquid be an innovation.

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is the sectional view that first light transmitting fiber of embodiment connects second light transmitting fiber (laser accunputure) position.

Fig. 2 is the sectional view of the laser accunputure (second light transmitting fiber) of embodiment.

Fig. 1 is connected up and down with Fig. 2 and has just constituted complete enforcement figure.

Interior stamen among the figure in vertebra type hole 4. coupling liquid, 5. laser accunputures of 2. first fibre-optic interior stamen 3. laser accunputures of vertebra shape overcoat of 1. first light transmitting fiber Xiang Duan

Coupling liquid can be made of different liquid, as long as their optical property is similar to fibre-optic interior stamen, and as cedar oil, wintergreen and their potpourri.

The interior stamen in the light transmitting fiber and the interior stamen of laser accunputure can be made with quartzy or other optical material.First fibre-optic top overcoat should be made with metal manufacturing or plastics, and laser accunputure (second light transmitting fiber) tailstock can be made by metal or plastics, and the needle tubing part should be by the stainless steel manufacturing.

In practicality, operating personnel add a small amount of coupling liquid in the hole of laser accunputure tail end after peg graft part shown in Figure 1 and part shown in Figure 2, can thrust (in the blood vessel) in the body.

Claims (2)

1, a kind of low level laser internal exposure is coupled with the liquid of light guide needle and optical fiber, in this device, first light transmitting fiber and coupling liquid and second light transmitting fiber are linked in sequence, it is characterized in that: what play coupling between these two light transmitting fibers is liquid, and second light transmitting fiber is syringe needle shape.

2, low level laser internal exposure according to claim 1 is characterized in that with the liquid coupling of light guide needle and optical fiber the optical property (refractive index) of coupling liquid is similar to the light transmitting fiber stamen, as cedar oil, and wintergreen and their potpourri.

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