LED Technologie

LED technology

Multi- and single-colour chips

Dr. Mach provides two different LED-technologies for its OT-lights:

1. MC models

are equipped with Multi-Colour-chips. The use of different-coloured LED-chips allows the surgeon to change the colour temperature of the OT-light depending on the preference for a more cold-white light (colour temperatures  4500 K) or for a warm-white OT-light (colour temperatures ≥ 4250 K). The surgeon can set the colour temperature according to the tissue structure, the surgical application and individual colour sensitivity. This way we avoid tiredness during work: for instance, dazzling effects can be avoided after longer interventions by using a warmer light. On the other hand it is possible to increase the contrast by using higher colour temperatures, which supports the surgeon's power of concentration.

 

Dr. Mach works with high-class LED modules from OSRAM.

2. SC models

are equipped with Single-Colour-chips. Changing the colour temperature is not possible in this case. Of course all the other advantages of the LED technology are also implemented here, or they can be ordered for surcharge (integrated laser pointer).

 

SC models reach a colour rendering of Ra ≥ 95 und R9 ≥ 92.

 


Lighting technology - special features of the MC models:

Colour composition inside the light head

Dr. Mach already merges the different coloured LED's by a computer calculated optical system with light guide and facetted lenses. This means: The composed light leaves the optical system as white light and is dispersed over the wound field homogeneously. Colour shadows in the light beam of the OR light caused by the surgeon's head, shoulder or hands are avoided by the colour composition in the optical system.


Changing the light colour

The use of different coloured LED's makes it possible for the first time in surgery to change the light colours depending on the application. The surgeon has the possibility to choose the optimum OR light according to the tissue type and wound field texture. Five different colour temperature values can be set: 3750, 4000, 4250, 4500 and 4750 Kelvin.* The setting can be done either at the key pad on the lamp housing or by a right-turn of the ring at the sterilisable handle.

 

* The LED-OT-lights ca be equipped optionally with different colour temperature ranges, e.g. from 3500 K to 5000 K.


Outstanding colour rendering

With colour rendering indexes Ra over 96 and R9 (red) above 90(MC models) the surgeon recognizes clearly the tiniest nuances of colour in tissue.

For recognizing the exact colour spectrum of the wound the exact rendition of the red colour range is essential. R9 (red) ≥ 96 means for the surgeon a visibly better recognition of details. The colour spectrum of the wound is rendered naturally with rich contrast. The OT-light clearly provides welcome relief for your eyes.

 

Common characteristics of the MC models and SC models

Facetted multi-lens system

A multitude of computer-calculated facetted lenses guarantees homogeneity and lowest shadiness in the light field. Separately arranged optical systems, each with four LED modules (Multi-Colour models) or each with one LED module (Single-Colour models), generate their own light field, which increases the contrast effect of the OR light. Light intensities of 160.000 Lux can be attained without difficulty.


Illumination in depth

You have the possibility to increase the light intensity of the central segment of the OT-light. This enables an optimum illumination of the wound field according to its texture and the shadowing effects.

 

A high and adequate light intensity is very important especially in cases of narrow and deep wound channels.

Handling

Integrated OT-laser pointer (optional):

The built-in laser pointer always indicates the middle of the light field and helps the surgeon to find the optimal position of the OT-light to the wound field. The laser pointer can be activated either at the key pad on the lamp housing or by a left-turn of the ring at the sterilisable handle.

 

After a short time the laser pointer turns off.


Key pad on the lamp housing:

Several light functions can be adjusted electronically, such as:

  • Switching ON and OFF
  • Illumination in depth
  • Laser pointer
  • Electronic light intensity control
  • Endo-light
  • Changing the colour temperature: 3750, 4000, 4250, 4500, 4750 K

Handle:

Merging of light fields is done by turning the sterilisable handle. The ring at the top of the handle allows the surgeon to set the most important light functions in the sterile area. The light functions mentioned below can be set at the ring of sterilisable handle:

  • Laser pointer (by a left-turn of the ring on the top of the handle)
  • Changing the colour temperature (MC models only) 
  • Adjusting illumination in depth (by a right-turn on the top of the handle)

Wall panel:

The OT-light can be operated at the wall panel (optional equipment against surcharge). Setting of the light functions is done synchronically at the wall panel and the light head.
Several light functions can be adjusted electronically, such as:

  • Switching ON and OFF
  • Illumination in depth
  • Laser pointer
  • Electronic light intensity control
  • Endo-light
  • Changing the colour temperature (MC models only)
Flow properties

Suitability for laminar flow systems

During development high attention was paid to the performance of the new LED OR lights in laminar-flow ceiling systems. The flow-enhancing ring form of all light heads (open ring form for the Mach LED 5 models) and the minimal surface avoid any heat increase in the surgeon's head area and create a perfect laminar flow performance, being a basic hygienic requirement in surgery.
The disk sealings of the light outlets and the circumferential sealing cord avoid infiltrations of dust, dirt and liquids inside the lamp head.


Hygiene

The disk sealing of the light outlets and the circumferential sealing cord avoid infiltrations of dust, dirt and liquids inside the lamp head.


Cool light

The LED technology is much more effective than conventional light sources such as halogen bulbs. The heat radiation is reduced to a minimum without using any expensive filter technique. The temperature increase in the surgeon's head area is almost non-existent.

Maintenance

Long life-span/low power consumption

The life-span of more than 50.000 operating hours reduces the costs for exchanging and replacing the illuminants considerably, compared with the conventional halogen technology used with former OT-lights. By implementation of the LED technology the power consumption could be reduced partially by more than 50%.