Optoga LED Modules in Minor & Majory Surgery and Examination Light Applications

The differences between Halogen and LED are huge but in the end they are to create the same solution. Halogen get the heat out by IR emission and the LED by convection (air flow). With the LED you only have light coming out in the direction of the light and no heat (no IR).

This gives the advantage that the light will not dry out the open wound and therefore it will not be any convection from the surgical cut and create humidity on the LED Light fittings. With cleaner light fitting it will be less problems with the bacteria growth environment. Just a smarter solution.

• Longer lifetime
• Less power, 20% of Halogen
• Possibility to change colour temperature CCT
• Cooler

HEAT

The first thing that creates difficulties when you change from halogen to LED modules is the idea that LED’s don’t create heat. This is totally wrong.

But LED’s create a different kind of heat and heat at much lower temperature, since LED are much more sensitive to heat, it can be drastic. Therefore, please think of using the whole light fitting as a cooling system. A recommendation is to have an outside temperature of max 55°C on your light fitting, (the temperature we can feel as pain is normally between 52-55°C).

If you use aluminum or metal that transfer heat better, the warmer the human skin feel it but if you add a thin layer of plastic or similar, the skin will not feel it as hot even if it has the same temperature. If you do it in this way you will have an easier integration on all new light fittings.

DRIVERS

Should you choose integrated driver in each LED module or an external driver? External driver do not have the as many features adaptable as with integrated driver including the digital interface for dimmer, fan control, touch less dimmer, CCT control, temp control etc.

The integrated driver can also be an advantage if you want to have just one power supply instead of having one external driver for each LED module. What extra features do you need?

CRI

R9 is the most important factor when detecting different kinds of oxygen saturation (different red blood) and similar for muscle fibers etc. There are other factors that are important as well, especially to manage to see and detect differences on different skin colors.

WORKING AREA

The lux value is often defined as the most important factor, but for the end user/operator there are more important things such as working area, CCT changeable, arm design and dimming features. The dentists are demanding different setup’s than the surgeon.

EXAMINATION LIGHT

You can run examination light on max power with good cooling system. Please look at the standard heat sink included in the Svea datasheet DC7LED that can be used.

MINOR SURGERY

On Minor Surgery you often have between 50 000 to 120 000 lx and depending on the necessary value (price or high end) you need to use high power on low cost (less modules and more heat) and low power (more modules less heat and better performance but more expensive to produce).

MAJOR SURGERY (multi or theater light)

You need to use less power to get a better lux/watt rating due to cooling features. In all applications we need to cool the system. Less wattage and more LED gives you less heating problematics.

Note: Below table is best viewed on a computer/laptop/desktop or a tablet with a screen size of at least 7 inches.

	CLARA ID 3LED	CLARA ID 6LED	SVEA ID 7LED	SVEA ID 12LED	SVEA ID 12LED CCT
CRI	Ra: 97 R9: 96	Ra:97 R9:88	Ra:96 R9:98	Ra:96 R9:98	Ra:>96 R9:>96
Illuminance 1.0 m distance	4W TBD 8W 7,000 lx (12°)	12W 16,000 lx (9°)	10W TBD 15W 25,000 lx (9°)	17W 30 000 lx (9°)   30W TBD	15W (30W) >20,000lx (9°)
Voltage	4 W 12-36VDC 8 W 12-36VDC	12 W 24-36VDC	10W 30-36VDC 15W 30-36VDC	17W 24-36VDC 30W 24-36VDC	15W (30W) 24-36VDC
CCT	4,300K	3,000K 4,000K (12.6°) 4,500K	4,000K	4,000K	3,500K-4,500K Variable CCT
E.g. Applications	Medical	Medical	Medical Examination light	Medical Minor surgery	Medical Minor surgery
Lens options	10° 25° 40° 130°	9.2° 12.6°	9° 12°	9° 12° 16° 22°	9° 12° 16° 22°