CN1026955C - Focus type high-power helium-neon laser therapeutic apparatus - Google Patents

Abstract

The present invention relates to an aggregation type high-power helium-neon laser therapeutic instrument. Helium-neon laser tubes are vertically arranged, laser and optical fibers are coupled and are aggregated into single beam optical fiber for transmission and output, and an output end surface outputs frustum-shaped laser beams increasing gradually. The therapeutic instrument can automatically scan and radiate by laser beams so as to treat large area focus areas of each position of a human body, or can be matched with a medical endoscope so as to treat the focus areas by entering the human body; power can be adjusted so as to achieve multiple functions. The present invention has the advantages of simple and reliable coupling mechanism, and easy replacement and adjustment of the optical fibers and the laser tubes; by using the helium-neon laser tubes as light sources, manufacturing cost is only 1/2 to 1/4 of that of a dye laser used as a light source.

Description

Focus type high-power helium-neon laser therapeutic apparatus

The present invention relates to a kind of laser medicine and use instrument, particularly focus type high-power helium-neon laser therapeutic apparatus.

Utilizing photodynamic therapy (claiming the laser chemistry therapy again) treatment tumor, is between 48 hours to 72 hours after animal such as human body are carried out hematoporphyrin derivative (being HPD) intravenous injection.Treat the normal position of human body except that the focus target area, no longer stagnating has under the HPD situation, and the weak laser radiation is carried out in the target area.Make above it by the absorption of HPD to laser, form the first energy state oxygen, it has strong inhibition tumor cytosis, acquires better curative effect, and therefore this medical measure is subjected to common people's extensive attention deeply.

Be used for the radiating laser of this weak laser, wavelength is 620～630 millimicrons usually, and is equipped with higher appropriate laser energy levels.Countries such as the U.S., Japan, China successively develop the laser instrument of multiple different structure for this reason, main use argon laser dye laser, copper gold vapor laser dye laser, quasi-molecule pumping dye laser and helium neon laser etc. are arranged.Known dye laser energy loss height, complex structure is huge, involve great expense and dye solution harmful.

The optical maser wavelength of so cheap helium neon laser output is 632 millimicrons, can satisfy the requirement of photodynamic therapy to wavelength.Yet its single output only has 30～45mW, can not satisfy the requirement of this therapy to laser energy levels far away, and this is first difficulty that the present invention will solve.

Research worker can be expected attempting to adopt the method for lengthening laser tube to improve the output energy level naturally, yet because this scheme increases as making complexity, yielding, cost in all many-sides, institute's energization inadequately significantly and power instability etc., also be difficult to effectively be solved, need people to continue to develop at present.

The research worker combination type He-Ne laser core instrument that begins one's study again, on February 17th, 1988 bulletin Chinese utility model patent, " modular helium-neon laser instrument cancer " patent No. 87207786 described contents promptly are examples wherein.By the combining form of laser tube suitably is set, with lens laser beam is focused on a bit, manual district operation is carried out in the target area.Under normal circumstances, it can move effectively, but the patient who shows the partes corporis humani position is implemented operation has inconvenience unavoidably, and the laser emission in the target area also is difficult to evenly more.

Homogeneous radiation laser is another difficulty that the present invention will solve.Facing to the cell tissue homogeneous radiation laser with broad area is difficult, in predetermined laser energy levels restriction, in order to be had broad area and to place the cell tissue of human body different parts to carry out homogeneous radiation laser what disposing, each fraction that promptly should the pair cell tissue carries out particularly difficulty of repeated multiple times homogeneous radiation.Here said even, should comprise the efficient intensity in the laser beam at least and act on the even of interior two aspects of optical density of broad area that have only homogeneous radiation laser, its result could finish medical care precess very soon.

People have carried out research around solving homogeneous radiation laser problem, and a kind of Laser Transmission method of american documentation literature number 4950266 records just relates to this problem.It is to accompany the individual illumination light that instructs in the middle of four optical fiber, and in the laser emission overall process, separating or overlapping can appear in hot spot, is difficult to realize that efficient intensity is even in the light beam like this.

Involved main difficulty and relevant issues in above-mentioned, if just simple combination, and research worker is not carried out creative work, is can not design to be suitable for ideal therapeutic instrument that this therapy uses.

The objective of the invention is to provide a kind of focus type high-power helium-neon laser therapeutic apparatus, and it can carry out quick effectively, laser emission uniformly to the focus zone in photodynamic therapy.

The object of the present invention is achieved like this:

Each he-ne laser tube is by coupling mechanism and/or coupling mechanism again, and coupling is gathered into 300-600mw and can carries out radiating laser beam to the body foci zone.

Coupling mechanism can be the individual cover for seat that is shaped on the silk hole of bolt adjustment location coupling seat of laser tube outfan cementation, dress has outer silk end and the location spigot-and-socket coupling seat with end face in the cover, is shaped on for the location with locknut lock dress its cylindrical in the seat to constitute with fixed cover, coupling cover fixed fiber with chimb with screwed connection coupling cover and its interior end dress lens other end.

Coupling mechanism also can be the individual cover for seat that is shaped on the silk hole of bolt adjustment location coupling seat of laser tube outfan cementation, dress has the spigot-and-socket coupling seat of outer silk and opening and conical end face in the cover, in the seat with lock locking with screwed connection coupling cover and its interior end dress lens other end with fixed cover, coupling cover fixed fiber formation.

Coupling mechanism can be that multifiber directly is coupled into simple optical fiber more again.

Coupling mechanism also can be with the individual cover for seat that is shaped on the silk hole of bolt adjustment location coupling seat of multifiber end cementation again, dress has outer silk end and the location spigot-and-socket coupling seat with end face in the cover, in the seat with locknut lock dress its circle be shaped on for the location with chimb and with screwed connection coupling cover and its interior end dress lens other end with the fixing simple optical fiber of fixed cover, coupling cover.

Advantage of the present invention: can automatic scam laser emission treat the large tracts of land focus zone of partes corporis humani position, or cooperate the medical science sight glass to enter interior therapeutic, the adjustable power a tractor serves several purposes; Coupling mechanism is simple and reliable, is easy to the replacing and the adjustment of optical fiber, laser tube; Adopting cheap he-ne laser tube is light source, and its manufacturing cost only is the 1/2-1/4 of light source for dye laser.

Description of drawings:

Fig. 1 is a kind of side view of focus type high-power helium-neon laser therapeutic apparatus;

Fig. 2 locates laser path for 10 millimeters apart from Dan Shu (being set under four optical fiber states arranged side by side) fiber-optic output face to scheme to optical fiber radiation light distribution (amplification);

Fig. 3 is the coupling mechanism master cutaway view in this device;

Fig. 4 is the local main cutaway view of another coupling mechanism;

Fig. 5 is that sweep mechanism partly cuts open except that the vertical view behind the upper cover plate;

Describe the details and the working condition of the concrete device that proposes according to the present invention in detail below in conjunction with Fig. 1-5.

Present invention resides in the bin 1 that sheet metal makes, vertically the state 7-13 that is installed props up he-ne laser tube 2, with power supply and switch board 3 unified control operations.An outfan cementation coupling mechanism 4 of every laser tube passes channel-type holder 5 and is gathered into fine 6 transmission of single beam and output after laser and optical fiber are coupled separately.Said single beam fibre 6 can be that every optical fiber after the laser tube laser coupled is 7-13 root optical fiber, is arranged in sub-circular with the tightst clustered pattern, constitutes with beformable body conduit suit, and its external diameter is the 1.5-2 millimeter.It also can be the not shown individual coupling mechanism again of employing.The overcoat and that section of the imperial palace circle perisporium that promptly are provided with ladder circle in the band all are furnished with a hole, and each end face of multifiber carries out inserting after the polishing in overcoat little within the circle, and each fiber end face originally is in cover ladder physa fixes each optical fiber under the same flat state.Greater than each root sectional area summation but be no more than 20% optical fiber, end face is fixed in the metal column sleeve after handling with a sectional area, inserts within the imperial palace circle of overcoat, be adjusted to optimum state with silk hole inner bolt after cementation as a whole, directly be coupled again; Or adopt a said coupling mechanism to be coupled again, realize multifiber is coupled into simple optical fiber again.

The output end face of this single beam fibre is proximate disk, exports gradually big approximate circle taper type laser beam, and effectively radiation area is in 5 millimeters bundle inner regions with arrow 7 expressions in addition of distance output end face.Setting selects for use 13 laser tubes and 13 optical fiber to be gathered into the single beam fibre, so radially maximum four optical fiber arranged side by side, and its radiation angle is 47 °, represents with Fig. 2 at 10 millimeters curves of light distribution of locating hot spot of distance output end face.1 expression light intensity among the figure, edge not overlay region is very narrow, and its width almost can be ignored between the 0.1-0.4 millimeter.Basic uniform distribution state is enough to show even substantially to target area radiation operation of light intensity in the laser beam in the curve.

Structure as for coupling mechanism is such, in conjunction with Fig. 3 can be laser tube outfan (or not shown multifiber end) cementation cover for seat 8, be shaped on each uniform 3 silk hole of two rows along its perisporium, dress is adjusted with a bolt 9 in the hole, and plug-in mounting is shaped on silk end and 10b place at 10a the place outside and locatees the spigot-and-socket coupling seat 10 of using end face in the cover.It is one that laser tube (or multifiber end), cover for seat, coupling seat three adjust the back cementation.In the coupling seat with locknut 11 lock dresses can with the bonder 13 of optical fiber 12 cementations.This bonder be provided with a cylindrical 14a section and coupling seat internal diameter mutually movingly the outer silk end at 14b place and with its connect coupling cover 15 and the middle part also be shaped on the body 14 of the chimb that supplies to locate usefulness, circle one end dress lens 16 in it, other end cementation is shaped on the fixed cover 17 of center hole, with it and coupling cover support diameter is the optical fiber 12 that the 0.08-0.3 millimeter is made with materials such as quartz, when being adjusted to fiber end face and placing lens focus optimum position, be one with body, coupling cover, optical fiber three cementation.Lock in aforementioned is screwed locknut after adorning the body insertion coupling seat that is meant bonder, relies on the chimb of body that bonder and coupling seat location lock are adorned.Both realize transmission again after the coupling of laser and optical fiber, provided convenience to one of them that change optical fiber or laser tube again.

In conjunction with Fig. 4 coupling mechanism can also be its basic structure as previously mentioned, 3 open seam that different is spigot-and-socket coupling seat 10A end is shaped on outer silk and perisporium is uniform and conical end, the body 14A cylindrical of bonder is smooth cylinder, and locknut 11A inner bottom is shaped on taper seat or the ladder circle that its tapering is slightly less than coupling seat 10A conical end tapering.When screwing locknut,, make the locking of bonder and coupling seat according to the three-point fix principle.

The fine outfan of such single beam can acquire the not laser beam of homenergic level by the laser of control circuit selection varying number laser tube, and the energy level that this device is selected for use is 300-600mw.Can hand optical fiber directly to the focal zone radiation; Also the light beam outfan can be contained in the scanatron of sweep mechanism 18, carry out radiation repeatedly in the fan-like pattern zone, implement the layering medical procedures for broad target area with its motion.

The structure of sweep mechanism 18 is made totally enclosed box body 18-1 with sheet metal, installs a synchronous motor 18-2 in it, and the eccentric 18-3 of a fixing axle on its radius is housed on the axle.The rotating support 18-5 and the axle of passing lid loam cake cylindrical void be equipped with clamp a slide block 18-4 that can move with slideway, and slide block.Suit root connecting rod on two axles of eccentric and slide block.Decorate a rotating bearing 18-6 in another of loam cake, support, seat together support root scanatron 18-7 wears the single beam fibre and export the end in the pipe.When motor was rotated by on-off control, slide block and support then can be around the reciprocal straightway motions of bearing, and promptly scanatron is done swing as shown, and its swing speed should be considered to be complementary with different work face facula area, with further realization homogeneous radiation.

So, medical function and be applicable to focus zone, partes corporis humani position for convenience, with said sweep mechanism also be contained in can the tripod 19 of space three-dimensional motion on.

Be noted that the optical fiber of every laser tube adhesion bonder also arranged side by side at last, can be as above-mentioned laser emission standby; Also the fine outfan of single beam can be made diffusion-type laser end, be used for the laser emission at position in the tube chamber, realize a tractor serves several purposes.

As for working condition above-mentioned in integrated structure illustrate, just according to different needs, by the laser tube laser of the selected varying number of switch board (promptly not homenergic level), with the district's laser therapy that aims at the mark of the fine outfan of single beam.Other relevant details can be imagined out fully, so do not giving unnecessary details.

Claims (3)

1, a kind of focus type high-power helium-neon laser therapeutic apparatus, be coupled into fiber-optic transfer by the coupling mechanism of each he-ne laser tube by separately, and their power supply, control circuit form, and the light beam of each Transmission Fibers after it is characterized in that being coupled is assembled each light beam and enter simple optical fiber by coupling mechanism again and transmits; Said coupling mechanism again can be to be shaped on the cover for seat (8) of locating coupling seat with the bolt adjustment at all optical fiber end cementation, the spigot-and-socket coupling seat (10) of the outer silk of band end, location end face is housed in it, the body (14) of the band location chimb of coupling seat internal lock dress bonder, body and within an end be equipped with and lure eyeglass (16) other end to constitute with the bonder of fixed cover (17), coupling cover (15) fixed fiber; Coupling mechanism also can be the cover for seat (8) that will be shaped at all optical fiber end cementation with bolt adjustment location coupling seat again, the spigot-and-socket coupling seat (10A) of the conical end face of the outer silk of band end, open seam is housed in it, the body (14A) of the smooth cylindrical of coupling seat internal lock dress bonder, body and within an end lens (16) other end be housed constitute with the bonder of fixed cover (17), coupling cover (15) fixed fiber.

2, therapeutic instrument as claimed in claim 1, it is characterized in that coupling mechanism can be that laser tube outfan cementation is shaped on the cover for seat (8) with bolt adjustment location coupling seat, the spigot-and-socket coupling seat (10) that has outer silk end, location end face is housed in it, the body (14) of the band location chimb of coupling seat internal lock dress bonder, body and within an end lens (16) other end be housed constitute with the bonder of fixed cover (17), coupling cover (15) fixed fiber.

3, therapeutic instrument as claimed in claim 1, it is characterized in that coupling mechanism also can be that laser tube outfan cementation is shaped on the cover for seat (8) with bolt adjustment location coupling seat, the spigot-and-socket coupling seat (10A) of the conical end face that has outer silk end, open seam is housed in it, the body (14A) of the smooth cylindrical of coupling seat internal lock dress bonder, body and within an end lens (16) other end be housed constitute with the bonder of fixed cover (17), coupling cover (15) fixed fiber.

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