CN201185965Y

CN201185965Y - Modified type medical holmium laser with sealing structure

Info

Publication number: CN201185965Y
Application number: CNU2008200464608U
Authority: CN
Inventors: 郑然�; 王可承; 郭华
Original assignee: GUANGZHOU POTENT OPTOELECTRONICS TECHNOLOGY Co Ltd
Current assignee: GUANGZHOU POTENT OPTOELECTRONICS TECHNOLOGY Co Ltd
Priority date: 2008-04-16
Filing date: 2008-04-16
Publication date: 2009-01-28
Anticipated expiration: 2018-04-16

Abstract

The utility model discloses a medical holmium laser with an improved type sealing structure, which comprises a sealing diaphragm (1) which is arranged between a resonant cavity (14) and a couple resonator (13), and is characterized in that the acute angle within the horizon between the plane on which the diaphragm (1) is located and outputted holmium laser beam axes (25) is 10-18 degrees, wherein a flat lens (3) for reflecting an indication light source in the couple resonator (13) of the holmium laser is embedded in the diaphragm (1), and the plane on which the flat lens (3) is located is parallel to the plane on which the diaphragm (1) is located, and the optical center of the flat lens is superposed with the holmium laser beam axes (25). The utility model has the significant effects of convenient installation and debugging, and stable work.

Description

A kind of hermetically-sealed construction modified model medical holmium laser

Technical field

This utility model relates to and utilizes laser to transmit the surgical device of the energy of on-mechanical form to human body or from human body, and this device is a kind of holmium laser, can be used for producing various laser therapeutic apparatus.

Background technology

The optical wavelength that holmium laser produced is consistent with the stronger absorption band of water, in tissue, produce shallow penetration depth, high operation precision and good blood coagulation effect, and adopt the silica fibre transmission of low OH concentration, can be operated in effectively in gas and the liquid environment, be widely used in various laser surgeries.But under 2～10 ℃ low temperature (low-temperature circulating water is that coolant cools off usually) condition, work usually by its laser crystal, therefore airborne steam can so that influence the energy output of laser instrument in the optical element surface dewfall under the room temperature water condition, when serious even do not have laser output.Notification number is that the utility model patent of CN2453574Y discloses a kind of scheme that solves this technical problem, this scheme is the interior nitrogen that feeds through dried of the resonator cavity of laser instrument, thereby the optics of resonator cavity is contacted with the air in the external world, reach and suppress steam, especially in the purpose of laser crystal surface sweating at surface optical device.But described utility model patent scheme complexity, and need to consume nitrogen, using trouble, the operating cost height is difficult to apply.

If in fact transmission and the coupling to laser there is not requirement, so just as long as the method that adopts whole mechanical seal with optics in the laser instrument and extraneous air insulated, can overcome the technical problem of the steam of air in the optical element surface dewfall.But, laser instrument is used in the Medical Instruments, if adopt the method for whole mechanical seal, just be difficult to realize coupling with optical fiber.Reveal according to the insiders, some manufacturers have known about the scheme of the above-mentioned difficult problem of determining at present, the flat eyeglass that this scheme will reflect the indication light source dexterously is screwed onto on the dividing plate by a lens barrel, again described divider upright is installed between resonator cavity and the coupled cavity the resonator cavity sealing in primary optical axis, reaches equally and suppress the purpose (see accompanying drawing 1) of steam in the surface optical device dewfall.Though it is simple relatively that this scheme has structure, the advantage that operating cost is low, but because described divider upright is in primary optical axis, and the angle of the flat eyeglass of described reflection indication light source and primary optical axis must be less than 90 degree, therefore the lens barrel with regard to using a transition to be connected between described dividing plate and the flat eyeglass.Lens barrel described in the such scheme can only play the transition interconnect function, and the reflection stack of indication light source and the laser propagation effect of main light source (laser) are not had any potentiation, especially described lens barrel adopts with dividing plate and is threaded, because of the vibration of transportation or displacement is easy to generate when loosening, debugging is got up difficult especially, tends to cause laser instrument to work on ground.

Summary of the invention

In view of there is above-mentioned deficiency in prior art, the purpose of this utility model provides a kind of hermetically-sealed construction modified model medical holmium laser, and this laser instrument has the advantage of Installation and Debugging convenience, working stability.

This utility model realizes that the technical scheme of above-mentioned purpose is:

A kind of hermetically-sealed construction modified model medical holmium laser, it comprises the seal diaphragm that is located between resonator cavity and the coupled cavity, it is characterized in that the folded acute angle in level between the holmium laser beam axis of plane, described dividing plate place and output is 10～80 degree; The flat eyeglass of reflection indication light source is embedded in the body of described dividing plate in the coupled cavity of described holmium laser, and described plane, flat eyeglass place and dividing plate place plane parallel, photocentre and the dead in line of holmium laser beam.

Holmium laser described in the utility model, wherein said dividing plate is projected as a parallelogram in horizontal plane, be positioned at holmium laser beam axis and be provided with a tubaeform stepped hole, the big end in this hole is positioned at a side of coupled cavity, female thread on the hole wall, the set step and the plane parallel at dividing plate place in the hole, the flat eyeglass tight fit of described reflection indication light source is arranged in the tubaeform stepped hole and is provided with externally threaded pressure ring by one and is squeezed on the intermediary step.Be arranged with two counterbores on the outer face of described pressure ring, the fabrication hole that this counterbore is puted forth effort for assembling.The flat eyeglass that will reflect the indication light source during assembling is put into tubaeform stepped hole, get final product by means of tightening pressure ring again as tweezers, installation and convenient, need not consider the center and the angle of inclination of center of lens, because these all are to guarantee by positional precision and the form error of controlling tubaeform stepped hole.

Holmium laser described in the utility model, wherein said dividing plate is fixedly abutted on the positioning strip by screw, and this positioning strip is one in horizontal plane projection parallelogram strip component, by the bottom surface of the fixing described laser instrument coupled cavity of two screws.Described positioning strip both can be convenient to the accurate location of dividing plate, also can play the effect of being connected and fixed.

Seal diaphragm described in the utility model adopts the design that is obliquely installed, not only reached the purpose of sealed cavity, also be convenient to indicate the flat eyeglass of light source to be embedded in reflection and also can obtain the needed angle of reflection of stack indication light source in the partition body, both abandoned the lens barrel of an excessive interconnect function, make the structure of whole dividing plate become compact more, also improved the stability of laser works.The further improvement of the utility model scheme adopts and to be provided with externally threaded pressure ring and will reflect and indicate the flat eyeglass of light source to be squeezed on the intermediary step of tubaeform stepped hole, thereby the difficulty factor of described flat eyeglass Installation and Debugging transferred in the processing of described dividing plate dexterously guarantee by processing equipment, make the product job stability be further improved, even flat eyeglass has produced looseningly in transportation or shifting process, also only described pressure ring need be tightened and to guarantee that laser instrument stably works.

Description of drawings

Fig. 1 is the structural representation of the dividing plate of the holmium laser that has the mechanical seal resonator cavity in the prior art.

Fig. 2 and Fig. 3 are a kind of concrete structure sketch map of holmium laser described in the utility model, and wherein, Fig. 2 front view (A-A of Fig. 3 analyses and observe), Fig. 3 are the vertical view that unloads behind the loam cake.

Fig. 4～6 are the structural representation of a kind of specific embodiment of dividing plate described in the utility model, and wherein Fig. 4 is a front view, and Fig. 5 is the B-B cutaway view of Fig. 4, and Fig. 6 is the C-C cutaway view of Fig. 4.

Fig. 7 is the structural representation of the another kind of specific embodiment of dividing plate described in the utility model.

The specific embodiment

Invention main points of the present utility model are the structure of described dividing plate and the improvement of installation form, describe in detail below in conjunction with accompanying drawing, but this utility model are not limited by described embodiment.

Referring to Fig. 4～6 and in conjunction with Fig. 2 and Fig. 3, dividing plate 1 described in the utility model is projected as a parallelogram in horizontal plane, be positioned at holmium laser beam axis and be provided with a tubaeform stepped hole 2, the big end in this hole is positioned at a side of coupled cavity 13, female thread on the hole wall, the set step and the plane parallel at dividing plate 1 place in the hole, flat eyeglass 3 tight fits of described reflection indication light source are arranged in the tubaeform stepped hole 2 and are provided with externally threaded pressure ring 4 by one and are squeezed on the intermediary step.Be arranged with two counterbores 5 on the outer face of described pressure ring 4, the fabrication hole that put forth effort as assembling in this hole.

Dividing plate 1 described in the utility model also can adopt structure shown in Figure 7, this structure be that referring to the difference of structure shown in Fig. 4～6 described pressure ring 4 is provided with through hole, corresponding position on the dividing plate 1 is provided with screw, and flat eyeglass 3 tight fits of described reflection indication light source are arranged in the tubaeform stepped hole 2 and by screw 24 and are squeezed on the intermediary step by pressure ring 4.

Referring to Fig. 2 and Fig. 3, present embodiment selects for use oblique 78 degree (with the angle of holmium laser beam axis 25) of the dividing plate 1 shown in Fig. 4～6 to be placed in the box body 9, the angled end-face 7 at two and 8 and two lateral walls of box body 9 fit tightly.In order to prevent that described dividing plate 1 is subjected to the effect of other factors and moves in box body 9, the bottom of described dividing plate 1 is fixed on a positioning strip 11 by screw 10, on the base plate of this positioning strip 11 by screw 12 fixed bin bodies 9.In order further to improve the sealing effectiveness of resonator cavity 14, three sides that described dividing plate 1 contacts with box body 9 all scribble latex, and the sealing between the suitable for reading and loam cake of another side and box body 9 can solve by the method that rubber gasket (not showing among Fig. 2) is set, so that the dismounting of loam cake 15.The set cable-through hole 6 in dividing plate shown in Figure 41 lower right corner wait to connect up and the Installation and Debugging end-of-job after the plug for seal of reuse latex.

Fig. 2 and Fig. 3 demonstrate a kind of whole structural scheme of holmium laser described in the utility model, it has a rectangular box body 9, the right-hand member of this box body 9 is provided with fiber optic hub 16, be provided with back cavity sheet adjusting bracket 17 in the box from left to right successively, water-cooled holmium laser cavity 18, ante-chamber sheet adjusting bracket 19, dividing plate 1, indication light source adjusting bracket 20 and condenser lens adjusting bracket 21, wherein, described holmium laser cavity 18 be located at the back cavity sheet on the back cavity sheet adjusting bracket 17 and be located at the resonator cavity 14 that ante-chamber sheet on the ante-chamber sheet adjusting bracket 18 constitutes holmium laser described in the utility model, be located on the dividing plate 1 flat eyeglass 3 and be located at indication light source on the indication light source adjusting bracket 20 and coupled cavity 13 that the lens on the condenser lens adjusting bracket 21 constitute holmium laser described in the utility model.

Referring to Fig. 2, during work, the heat that holmium laser cavity inner laser crystal 22 is produced is taken away immediately by the cooling in the circulation water channel 23, because described resonator cavity 14 is in sealing state, the optics of intracavity and surrounding air are isolated fully, thereby have effectively avoided the surface sweating of airborne steam at optics.In transportation or shifting process, loosening even described flat eyeglass 3 has produced, also only described pressure ring 4 need be tightened and can guarantee that laser instrument stably works.

Claims

1, a kind of hermetically-sealed construction modified model medical holmium laser, it comprises the seal diaphragm (1) that is located between resonator cavity (14) and the coupled cavity (13), it is characterized in that the folded acute angle in level between the holmium laser beam axis (25) of described dividing plate (1) plane, place and output is 10～80 degree; The flat eyeglass (3) of reflection indication light source is embedded in the body of described dividing plate (1) in the coupled cavity of described holmium laser (13), and described flat eyeglass (3) plane, place and dividing plate (1) place plane parallel, and photocentre overlaps with holmium laser beam axis (25).

2, a kind of hermetically-sealed construction modified model medical holmium laser according to claim 1, it is characterized in that described dividing plate (1) is projected as a parallelogram in horizontal plane, be positioned at holmium laser beam axis (25) and be provided with a tubaeform stepped hole (2), the big end in this hole is positioned at a side of coupled cavity (13), female thread on the hole wall, the set step and the plane parallel at dividing plate (1) place in the hole, flat eyeglass (3) tight fit of described reflection indication light source is arranged in the tubaeform stepped hole (2) and is provided with externally threaded pressure ring (4) by one and is squeezed on the intermediary step.

3, a kind of hermetically-sealed construction modified model medical holmium laser according to claim 1, it is characterized in that described dividing plate (1) is projected as a parallelogram in horizontal plane, be positioned at holmium laser beam axis (25) and be provided with a tubaeform stepped hole (2), the big end in this hole is positioned at a side of coupled cavity (13), female thread on the hole wall, the set step and the plane parallel at dividing plate (1) place in the hole, flat eyeglass (3) tight fit of described reflection indication light source is arranged in the tubaeform stepped hole (2) and by screw (24) and is squeezed on the intermediary step by the pressure ring (4) that is provided with through hole.

4, according to claim 1,2 or 3 described a kind of hermetically-sealed construction modified model medical holmium laser, it is characterized in that described dividing plate (1) is fixedly abutted on the positioning strip (11) by screw (10), this positioning strip (11) is one in horizontal plane projection parallelogram strip component, by the bottom surface of the fixing described laser instrument coupled cavity (13) of screw (12).