Drager Babytherm 8000 User manual

Dräger Medizintechnik

Contents

Function description

1 General 3

2 Mechanical system 3

2.1 Trolley ..................................................................................................... 3

2.2 Base plate for resting surface ................................................................. 3

2.3 Socket strip ............................................................................................. 4

2.4 Resting surface ....................................................................................... 5

2.4.1 Tilt mechanism for resting surface ............................................ 6

2.4.2 Pneumatic system (extraction) ................................................. 6

3 Mattress heating 7

3.1 Resting-surface heating concept ............................................................ 7

3.1.1 Mattress .................................................................................... 7

3.1.2 Heating panel ............................................................................ 8

3.1.3 Control unit ............................................................................... 8

3.1.4 Block diagram of mattress heating ........................................... 9

3.2 Functional description and software specifications ............................... 10

3.2.1 Front panel .............................................................................. 10

3.2.2 Measurement of mattress temperature ....................................11

3.2.3 Alarms ......................................................................................11

3.2.4 Software safety features ......................................................... 13

3.3 Mattress heating electronics ................................................................. 15

3.3.1 Design and general overview ................................................. 15

3.3.2 Block diagram of mattress heating ......................................... 17

3.3.3 Power PCB ............................................................................. 18

3.3.4 Controller PCB ........................................................................ 23

Schutzvermerk DIN 34 beachten. Copyright reserved.

F6132200T01IVZ.fm 09.03.01

6132.200 Babytherm 8000 Version 2.0 Contents Page 1 of 28

Dräger Medizintechnik

Contents

3.3.5 Display PCB and keypad ........................................................ 27

3.3.6 Mains switch with auxiliary contacts ....................................... 27

3.3.7 Transformer and mains voltage conversion ............................ 28

4 Radiant heater 600 W 28

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F6132200T01IVZ.fm 09.03.01

6132.200 Babytherm 8000 Version 2.0 Contents Page 2 of 28

Dräger Medizintechnik

Function description

1 General

The Babytherm 8000 is a modular system for providing:

− Heat therapy

− Oxygen and aerosol therapy

− Reanimation

− Intensive care for premature babies, new-born babies and infants.

2 Mechanical system

2.1 Trolley

The Babytherm 8000 is available with various trolleys:

Units with no electrical height adjustment:

Small base plate for heated cot

Large base plate for intensive-care model or reanimation unit. This version permits installation of a radiant heater.

Units with electrical height adjustment

Small trolley for heated cot

Large trolley for intensive-care module or reanimation unit. This version permits installation of a radiant heater.

2.2 Base plate for resting surface

The resting surface is attached to the base plate. The Babytherm 8000 is available with various base plates:

− Small base plate and small trolley for heated cot.

− Large base plate and large trolley for intensive-care model or reanimation unit.

This version permits installation of a radiant heater

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6132.200 Babytherm 8000 Version 2.0 Function description Page 3 of

Dräger Medizintechnik

2.3 Socket strip

Caution: The 3x socket strip beneath the base plate of the resting surface is only intended for:

− Babytherm mattress heating

− Dräger radiant heater 600W

− Babytherm height adjustment

Other loads are not permitted!

Electrical safety is checked by way of the common power cord.

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6132.200 Babytherm 8000 Version 2.0 Function description Page 4 of

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2.4 Resting surface

The resting-surface assembly is made up of the following:

− Resting surface

− Tilt-mechanism bottom section, bolted to base plate

− Mechanical system for tilt mechanism

− 4 corners for holding glass

Various side panels can be attached to the resting surface:

− 23 cm high side panels for heated cot or

− 15 cm deep side panels for reanimation unit

The resting surface comes with (heated cot and without reanimation unit) mattress heating:

With mattress heating:

− Gel mattress 2M 20 827

The mattress heating panel is only intended for the gel mattress 2M 20 827!

Danger:

The gel mattress 2M 20 827 may only be used in the Babytherm 8000 if resting-surface heating has been fitted!

The gel mattress 2M 20 827 is not to be used in the Babytherm 4200 or in other heated cots with a heating-panel temperature in excess of 40 °C danger of burns!

Keep sharp objects away from gel mattress danger of damage!

Without mattress heating:

− Foam mattress 2M 21 012

− Openings which are not needed are sealed with dummy plugs.

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F6132200T01.fm 09.03.01

6132.200 Babytherm 8000 Version 2.0 Function description Page 5 of

Dräger Medizintechnik

2.4.1 Tilt mechanism for resting surface

The bottom section of the resting-surface tilt mechanism is connected to the base plate by means of 4 hexagon socket-head bolts. The resting surface is positioned in this section and is supported on one side by rollers and on the other by teflon strips as anti-friction bearings. The resting surface is fixed by means of gear teeth in the bottom section and the mechanical-system latch of the resting-surface tilt mechanism.

Fig. 1: Tilt mechanism for resting surface

Pulling the lever A presses the latch B downwards out of the gear teeth C and the resting surface D can be swivelled +15° to -20° out of the basic position. The lever is pulled back again in each case by 2 springs and the resting surface thus fixed in position.

2.4.2 Pneumatic system (extraction)

Two extractors are provided for the Babytherm 8000:

− Extractor -0.9 bar 2M 85 040

− Extractor -0.5 bar 2M 85 045

The infinite vacuum is generated by an ejector. The extractor is supplied by way of the O2 or compressed-air system. All plastic parts subject to contamination can be sterilised in an autoclave at temperatures up to 134 °C.

Schutzvermerk DIN 34 beachten. Copyright reserved.

F6132200T01.fm 09.03.01

6132.200 Babytherm 8000 Version 2.0 Function description Page 6 of

Dräger Medizintechnik

3 Mattress heating

3.1 Resting-surface heating concept

The heated cot and OC versions feature a new resting-surface heater. The heating system is made up of the following components:

HHT Gel Mattress

Aluminium plate 6mm

Heating foil

Temp. Sensors(2x2 NTCs)

Control unit

Power cord

Partition of prim./ sec. voltage

Fig. 2: Heating system

3.1.1 Mattress

The mattress consists of a thermally conductive gel (HHT = high heat transfer).

Danger:

This gel mattress is not to be used in the Babytherm 4200!

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F6132200T01.fm 09.03.01

6132.200 Babytherm 8000 Version 2.0 Function description Page 7 of

Dräger Medizintechnik

3.1.2 Heating panel

The heating panel is inserted from above into the resting surface and secured with 4 screws. An all-round seal prevents the ingress of dirt and moisture. The heating panel is made of a backing plate (6 mm aluminium) with bonded -on heating foil 24V/120W and 2 bolted-on twin temperature sensors.

3.1.3 Control unit

This unit is secured in position in the resting-surface housing with 2 slide locks.

The control unit is made up of the following components:

Connection protective ground PCB Power + PCB Controller

V2 V11

Transformer

Connection heating

Mains input with fuses

PCB Power

R22

Horn

Relay

Connection Sensors

Keyboard

Fuses

F2 F1

EPROM

Test points

Gold Cap

PCB Controller

4 Service-LEDs

Switch

PCB Display

Fig. 3: Control unit

− Touch-sensitive keys with LEDs

− Transformer with 4KV isolation

− Controller PCB (P 68332, EPROM, I/Os, AD conversion ...)

− Power PCB (actuation of heating, voltage regulator ...)

− Display PCB (7-segment displays with actuation, keypad interrogation)

− Accessory set for voltage version (adapter 100-127 V and other fuse links in

mains input)

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F6132200T01.fm 09.03.01

6132.200 Babytherm 8000 Version 2.0 Function description Page 8 of

3.1.4 Block diagram of mattress heating

Main switch

120V

Voltage selection *

100V

24V

120V

Transformer

+5VD

100 V = Adapter YY YY YYY

230 / 240 V = no adapter necessary

110 / 127 V = Adapter XX XX XXX

* Voltage selection

24V

PCB Power

Dräger Medizintechnik

Heater 24V/120W

Feedb. Heater

RS232

Overtemp.

+5VA

Heater Control

and monitoring

Relay on

Heater on

Heater

Mono

Comp.

41,6 C

+5VD

Power supply

+5VD

+9VDC

+5VD

Powerfail

Reset

Akku test

12 bit ADC

CPU

68332

12 bit ADC

41,6 C

Horn

Gold Cap (Battery)

Horn on

INOP

Mono

INOP LED

+5VA

Amplifier (2x)

and LED control

Powerfail monitoring

Powerfail

4x Service LEDs

Decoder

7-Segment-Display

Display and Key Controller

INOP

+5VD

Powerfail LED

LEDs

Keys

INOP LED

PCB Display

+9VDC

2 NTCs (2x)

PCB Controller

Keyboard

Fig. 4: Block diagram of mattress heating

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F6132200T01.fm 09.03.01

6132.200 Babytherm 8000 Version 2.0 Function description Page 9 of

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