Surgical light with controlled optical radiation

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to surgical lights. A light comprises main and supplementary light diodes mounted on a body, distributed on its surface and grouped by the main and supplementary light diodes, and a light field control. The groups of the main and supplementary light diodes are coupled both to each other, and to the light field control. The main light diodes are fixed on the body of the light with their optical axes transecting an axis of the light in the centre of a light spot, while the supplementary light diodes are fixed on the body with their optical axes creating an annular concentric light spot surrounding a main spot.

EFFECT: invention allows higher fixation reliability of the light and maintained higher luminous efficacy.

3 cl, 3 dwg

 

The invention relates to medical equipment, namely to the lighting device with light-emitting diodes with light control emission

Since in everyday practice includes LEDs, lighting apparatus using the lamp, composed of LEDs, has special advantages compared to existing fluorescent lamps, incandescent lamps, etc. which is their long service life and low energy consumption.

Lights with LEDs, used as lights or traffic lights, described in detail in the patents of the Russian Federation such as№2123633, №2151473, №2153623, №2202731, №2227245, №2244870, №2248499 and others. They are intended to illuminate distant objects, for use in systems of the circular review and lights, which do not require the establishment of a maximum level of illumination inside the working area and the constant diameter of the light field.

To date, however, LEDs are not widely used in the surgical lamps, which requires providing shadowless effect and high luminous efficiency due to high luminance and uniform distribution of light flux within the working area. Luminous flux of the surgical light fixtures is created by adding the light fluxes of the individual optical modules is proishodit at a distance of 0.7 m - 1.4 m from the building. Inside the work zone creates maximum light level and remains constant diameter of the light field. In addition it should be possible to control the diameter of the light field. For this surgical lamps are equipped with control devices of the light field, which mainly represent rotary mechanical means.

Known surgical lamp with a mechanism for regulating the size of a light field, made in the form of rotatable mirrors reflecting the light beam from the light source (Lamp brand BH-500 company FAMED (Poland)).

In the known lamp the mechanism of regulation of the size of the light field is not effective enough because of the low synchronization rays, use extra reflective surface, and also has large dimensions.

Known surgical lamp, in which the adjustment of the lighting system is carried out by movement of the lamp relative to the reflector (surgical lamp LS-6; passport 66-00-PS).

The known lamp can only adjust the size of the light spot shallow depth, and also has large dimensions.

Also known surgical light with light control emission containing fixed in the housing optical elements in the form of ha is agennix lamps and the control unit of the light field, includes installed on the main axis of the illumination system of the reference stock, in the upper part of which is placed a split ball joint with six degrees of freedom, means to rotate the optical elements in the form of multiple Cam located under the ball support and interacting with a vertical leashes brackets optical elements that interact with alignment pins (p. the Russian Federation No. 2149309, IPC F21V 14/02, F21V 21/29, F21W 131:205, publ. 20.05.2000,).

In the known technical solution, management of the light radiation is effected by mechanical means, enabling rotation optical elements having a complex structure, large overall dimensions and the reliability decreases as the wear and tear of mechanical components.

The closest to the technical nature of the claimed device is operating lamp containing fixed to the housing optical elements pivotally connected to each other, and the control unit of the light field by mechanical means (application EP No. 1568935, IPC F21S 8/00, F21S 2/00, publ. 31.08.2005,).

The known lamp has high luminous efficiency. However, the management of light radiation in the known lamp is carried out by mechanical means providing rotation of the optical elements is otnositelno each other, reliability decreases as the wear and tear of mechanical components.

The claimed invention is directed to improving the reliability of surgical luminaires while maintaining high luminous efficiency and is solved as follows.

In the surgical lamp with control light radiation containing fixed to the body of the lamp optical elements and the control unit of the light field, according to the claimed technical solution optical elements made in the form of main LEDs, dispersed on the surface of the lamp enclosure, and additional LEDs, placed between the main LEDs and has a spatial orientation that is different from the spatial orientation of the main LEDs, while the primary and secondary LEDs arranged in groups, and groups of the main LEDs and a group of additional LEDs are connected with the control unit of the light field.

The main LEDs mounted on the housing with the intersection of the optical axes with the axis of the lamp in the center of the light spot.

Moreover, additional LEDs are fixed to the body with the formation of their optical axes of the concentric light spot in the form of a ring around the main spots.

In addition to the, the control unit of the light field includes a control unit that is connected to the group of the main and additional led by regulators, each of which is connected to the power supply.

Core installation of LEDs distributed on the body of the lamp, and additional LEDs - between the main LEDs, as well as the Association of LEDs in the group and different spatial orientation of the groups of the main LEDs and allows electronic control of the diameter of the light field, which increases the reliability of the lamp.

Execution control device of the light field consisting of a control unit, connected to the group of the main and additional led by regulators, each of which is connected to the power supply, allows the adjustment of the balance of the currents passing through the group of the main and additional LEDs, providing a redistribution of the light flux within the light field, i.e. allows electronic control of the light field, thus increasing the reliability of the lamp.

The presence of the distinctive features of the prototype of essential features allows you to recognize the inventive device with a new one.

The prior art is not identified technical solutions that match the definition with the distinctive features of the proposed facility, therefore, the proposed device meets the criterion of inventive step.

The present invention will be best understood by consideration of the detailed description together with the accompanying drawings of the present invention, this description should not be construed as limiting, but only as an example for explaining and understanding the invention.

Figure 1 - layout of the main and additional LEDs on the surgical lamp.

Figure 2 - stroke light rays in the lamp.

Figure 3 - control unit of the light field of the surgical lamp.

To the housing 1 lamp attached 2 main and additional 3 LEDs, arranged in groups. The main LEDs 2 have a width of a light beam, 6.5°, and focused in such a manner that their optical axes converge in the center of the light spot at a distance of 1 m from the surface. Additional LEDs 3 have a width of a light beam equal to 10°, and are spread between the main LEDs 2, and the optical axis form a concentric light spot in the form of a ring around the main light spot, a radius of 100-200 mm from the center of the spot, which is optimal for surgical lamps. The control unit of the light field consists of a power supply unit 4, a control unit with microcomp the PC 5, d / a converters 6A and 6b, the current generators 7a and 7b.

When connecting the lamp to the mains at the same time the power from the power supply unit 4 is supplied to the groups of the main LEDs 2 and additional LEDs 3. If necessary, large area lighting (wide stripes) include groups of the core 2 and an additional 3 LEDs. In case of deep wounds, when you want a small light spot, include only the group of the main LEDs 2. When endoscopy is needed only highlighting areas where there is an operation using an endoscope, therefore, include only the group of the additional LEDs 3. In these cases, using a microcontroller with a control unit 5, d / a converters 6A and 6b and generators 7a and 7b perform the adjustment of the balance of the currents passing through the core 2 and an additional 3 LEDs, providing a redistribution of the light flux within the light field.

The invention can be used in medical technology.

1. Surgical light with light control emission containing fixed to the body 1 lamp 2 main and additional 3 LEDs, distributed over its surface and groups of the main group and of the additional LEDs, and the control unit svetiogoria, moreover, the group of the main LEDs 2 and a group of additional LEDs 3 are interconnected with a control unit of the light field, wherein the main LEDs 2 mounted on the housing 1 lamp crossing their optical axes with the axis of the lamp in the center of the light spot, and the additional LEDs 3 mounted on the housing 1 with the education of their optical axes of the concentric light spot in the form of a ring around the main spots.

2. Surgical lamp according to claim 1, characterized in that the control unit of the light field includes control unit with microcontroller 5, which through d / a converters 6A and 6b and the current generators 7a and 7b connected group of the main LEDs 2 and a group of additional 3 LEDs, each of which is connected to the power supply unit 4.



 

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