Leica M820, M844 User Manual

Leica M844

Leica M820

User manual

10 713 294 – Version I

Living up to Life

Thank you for purchasing a Leica surgical microscope system.

In developing our systems, we have placed great emphasis

on simple, self-explanatory operation. Nevertheless, we suggest studying this user manual in detail in order to utilize all the benefits of your new surgical microscope.

For valuable information about Leica Microsystems products

and services and the address of your nearest Leica representative, please visit our website,

www.leica-microsystems.com.

Thank you for choosing our products. We hope that you will enjoy the quality and performance of your Leica Microsystems surgical microscope.

Leica Microsystems (Schweiz) AG

Surgical Division

CH-9435 Heerbrugg

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

Chapter overview

Introduction	3
Operating elements	8
Preparation before operation	21
Use	38
Safety notes	48
Care and maintenance	58
What to do if...?	62
Technical data	66

This manual covers the following systems:

Leica M844 F40

Leica M844 F19

Leica M844 C40

Leica M844 CT40

Leica M820 F40

Leica M820 F19

Leica M820 C40

Leica M820 CT40

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

1

Contents

Page			Page
Introduction
Design and function	4	Manufacturer's declaration of
		electromagnetic compatibility	51
Operating elements		Signs and labels	55
Stands/ceiling mounts	8
Control unit	12	Care and maintenance
Leica M844 and Leica M820 surgical microscopes	13	Maintenance instructions	58
Leica M844 accessories	14	Cleaning the touch panel	58
Leica M820 accessories	15	Maintenance	58
Beam splitter, rotatable, 50/50%	15	Changing fuses	59
Leica M844 and Leica M820 accessories	16	Changing bulbs	59
Foot/handswitches and handles	17	Notes on reprocessing of sterilizable products	60
Video and photo accessories for Leica M844	19	Instructions	60
Video and photo accessories for Leica M820	20	Table: Sterilization	61
Preparation for operation		What to do if...?
Pre-operation checklist	21	General	62
Fitting optical accessories for Leica M844	22	Microscope	62
Fitting optical accessories for Leica M820	23	Control unit	64
Mounting beam splitter, rotatable	23	Error messages on the control unit	64
Adjusting optical accessories – general information	24	F40 stand	64
Adjusting optical accessories for Leica M844	25	C40 ceiling mount	64
Fitting documentation accessories	26	CT40 ceiling mount	65
Selecting documentation accessories	27	F19 stand	65
Fitting the slit lamp	28	TV, photography	65
Adjusting the slit lamp	30
Wide-angle observation system	32	Technical data
Stand settings (F40, C40, CT40)	33	Microscope	66
Stand settings (F19)	34	Lamps	66
Transport, transporting and rest positions	35	Accessories	66
Positioning at the operating table	36	Electrical data	67
Sterile controls	37	Auxiliary power socket	67
		Optical data	67
Use		Stands/ceiling mounts	68
Positioning the microscope	38	Ambient conditions	69
Adjusting the microscope	39	Standards	69
Touch panel	40	Limitations of use	69
Switching the microscope on	41	Dimensioning drawing (mm) Leica M844 F40 and
Selecting users	41	Leica M820 F40	70
Editing the user list	42	Dimensioning drawing (mm) Leica M844 C40
Configuring users (User Settings menu)	42	and Leica M820 C40	71
StepCycle	45	Dimensioning drawing (mm) for Leica M844 CT40
Auto Reset	46	and Leica M820 CT40	72
The Maintenance menu	46	Dimensioning drawing (mm) for Leica M844 F19
The How to... menu	47	and Leica M820 F19	73
The Service menu	47
Safety notes
Intended use	48
Directions for the person responsible for the
instrument	48
User qualifications	48
Directions for the operator of the instrument	48
Dangers of use	49

2	Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

Introduction

User manual

In addition to instructions for use, this user manual also provides important safety notes (see the chapter entitled, "Safety notes"). Read the user manual carefully and thoroughly before placing the product in operation.

Product identification

The model code and serial number of your product are provided on the nameplate found on the underside of the swing arm. Write this data into your user manual and always refer to it when you contact us or the service workshop regarding any questions you may have.

Model:

Serial No.:

Symbols in this user manual

The symbols used in this user manual have the following meanings:

Warning	Warning regarding use hazard or
	noncompliant use that can lead to serious
	injury or death.
Caution	Warning regarding use hazard or
	noncompliant use that can lead to minor
	injury, but significant article, property or
	environmental damage.
	Useful information that can help the user
	operate the product correctly and
	efficiently.
	Request for action; here, you are
	requested to take action.

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

3

Introduction

Design and function

Leica M844 F40 and Leica M820 F40

3

4

1		2
			5
			9

6

7

13

15		10	8

14

11

12

1	Control unit	9	Tilt head
2	Horizontal arm	10	Column
3	Swing arm	11	Cable support
4	XY unit	12	Base
5	Binocular tube	13	Holding fixture for video control unit
6	0° assistant’s attachment (Leica M844 only)	14	Handle
7	Handle	15	Suspension device for footswitch
8	Optics carrier

4	Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

Introduction

Leica M844 F19 and Leica M820 F19

3

1

2

9				4
			5

13

6

15 10

7

14

8

11

12

1	Control unit	9	Tilt head
2	Horizontal arm	10	Column
3	Swing arm	11	Cable support
4	XY unit	12	Base
5	Binocular tube	13	Holding fixture for video control unit
6	0° assistant’s attachment (Leica M844 only)	14	Handle
7	Handle	15	Suspension device for footswitch
8	Optics carrier

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

5

Introduction

Leica M844 C40 and Leica M820 C40

3

16

									4
9					5					6
		2
1										7
13
				8

17

1	Control unit	9	Tilt head
2	Horizontal arm	13	Holding fixture for video control unit
3	Swing arm	16	C40 ceiling mount
4	XY unit	17	Wall mount for control unit (optional)

5Binocular tube

60° assistant’s attachment

7Handle

8Optics carrier

6	Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

Introduction

Leica M844 CT40 and Leica M820 CT40

18

3

						9							4
							5
														6
				2
1
															7
		13
							8

17

1	Control unit	9	Tilt head
2	Horizontal arm	13	Holding fixture for video control unit
3	Swing arm	17	Wall mount for control unit (optional)
4	XY unit	18	CT40 ceiling mount

5Binocular tube

60° assistant’s attachment (Leica M844 only)

7Handle

8Optics carrier

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

7

Controls

Stands/ceiling mounts

F40 floor stand

21

20

24

19

7

23				7	Handles
				19	Power switch
				20	Balancing knob
22				21	Swing arm stop lever
				22	Footbrake release lever
				23	Footbrake
				24	Touch panel

25

26

27

28

29

31		Type	10448139
30
		SN	211004003
	h	Made in CH

Leica Microsystems (Schweiz) AG

CH-9435 Heerbrugg

MODEL	LEICA M844 F40
	100V -230V ~ 50/60Hz
	400VA
				2x T6.3A/250V

25Power supply

26Fuse holder (2x 6.3 A, time-lag)

27Running-time meter for the surgical microscope

28Potential equalization socket

29Socket for remote brake release

30Auxiliary power outlet (max. output power 100 VA)

For requirements of use, see the Technical data, page 67.

31Fuse holder (1 A, time-lag)

Caution 1

Connecting unauthorized secondary devices to the auxiliary power socket can lead to damage to the surgical microscope and to the secondary device!

Never connect secondary devices to the auxiliary power socket unless they conform to the specifications. For requirements of use, see the Technical data, page 67.

8	Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

Controls

F19 floor stand

85			83
20			85
		85	84

24

19

					7
	23			7	Handles
				19	Power switch
				20	Balancing knob
22				22	Footbrake release lever
				23	Footbrake
				24	Touch panel
				83	Retaining hook (blocks swing arm)
				84	Retaining pin (holds retaining hook in released state)
				85	Articulation brakes (regulate ease of movement)

27

283

30

31

26

25

25Power supply

26Fuse holder (2x 6.3 A, time-lag)

27Hour meter for the surgical microscope

28Potential equalization socket

30Auxiliary power outlet (max. output power 100 VA)

For requirements of use, see the Technical data, page 67.

31Fuse holder (1 A, time-lag)

Caution 1

Connecting unauthorized secondary devices to the auxiliary power socket can lead to damage to the surgical microscope and to the secondary device!

Never connect secondary devices to the auxiliary power socket unless they conform to the specifications. For requirements of use, see the Technical data, page 67.

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

9

Controls

C40 ceiling mount

Remote control

26 27

28

25

21

20

24	19

7 Handles

19Power switch

20Balancing knob

21Swing arm stop lever

24	Touch panel	7
26	No function
27	Up
28	Down

25

26

27

28

29

31		Type	10448139
30	h	SN	211004003
		Made in CH

Leica Microsystems (Schweiz) AG

CH-9435 Heerbrugg

MODEL	LEICA M844 C40
	100V -230V ~ 50/60Hz
	400VA
				2x T6.3A/250V

25Power supply

26Fuse holder (2x 6.3 A, time-lag)

27Hour meter for the surgical microscope

28Potential equalization socket

29Socket for remote brake release

30Auxiliary power outlet (max. output power 100 VA)

For requirements of use, see the Technical data, page 67.

31Fuse holder (1 A, time-lag)

Caution 1

Connecting unauthorized secondary devices to the auxiliary power socket can lead to damage to the surgical microscope and to the secondary device!

Never connect secondary devices to the auxiliary power socket unless they conform to the specifications. For requirements of use, see the Technical data, page 67.

10	Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

Controls

CT40 ceiling mount

Remote control

27 28

21

20

24

19

7 Handles

19Power switch

20Balancing knob

21	Swing arm stop lever	7
24	Touch panel

27Up

28Down

25

26

27

28

29

31		Type	10448139
30	h	SN	211004003
		Made in CH

Leica Microsystems (Schweiz) AG

CH-9435 Heerbrugg

MODEL	LEICA M844 CT40
	100V -230V ~ 50/60Hz
	400VA
				2x T6.3A/250V

25Power supply

26Fuse holder (2x 6.3 A, time-lag)

27Hour meter for the surgical microscope

28Potential equalization socket

29Socket for remote brake release

30Auxiliary power outlet (max. output power 100 VA)

For requirements of use, see the Technical data, page 67.

31Fuse holder (1 A, time-lag)

Caution 1

Connecting unauthorized secondary devices to the auxiliary power socket can lead to damage to the surgical microscope and to the secondary device!

Never connect secondary devices to the auxiliary power socket unless they conform to the specifications. For requirements of use, see the Technical data, page 67.

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

11

Controls

Control unit

Front view

								24	Touch panel
								32	Brightness/contrast adjustment
									Press once to adjust brightness
									Press twice to adjust contrast
									Press three times to save adjustment and exit
								33	Decrease value
								34	Increase value
								35	Video mode active LED
								36	Video mode/control unit (microscope) mode switch
								37	Control unit mode active LED
	24	32	33 34		35	36	37
Connections
	DVI							IN/OUT	IN/OUT	FOOT/HAND		ADF
SERVICE			USB	VIDEO			1	2	EXTERN	1	2	1
LCD				IN
	RESET
38	39		40	41			42	43	44	45	46	47

2

48

38	Service interface	44	External CAN
39	Reset button	45	Footswitch or handswitch 1
40	USB connection	46	Footswitch or handswitch 2
41	Video input (BNC)	47	ADF Additional Function 1
42	Internal CAN 1	48	ADF Additional Function 2
43	Internal CAN 2

ADF 1 and 2 are digital relay outputs that can switch 24 V/2 A. During operation, use only the cables provided for CAN, video and footswitch in order to prevent malfunctions.

12	Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

Controls

Leica M844 and Leica M820 surgical microscopes

57

59 58

56

54

7	60
53
52
51
50

	49		63	62	61
7	Handles	56	Rotary knob for tilt drive (motorized)
49	Lamp cover opener	57	Magnification display with XY reverse display
50	OCF – Optics Carrier Functions	58	Focus reset
51	CAN bus	59	XY reset
52	Socket for external supply of slit lamp	60	Manual zoom emergency drive
53	OttoFlex/slit lamp switch	61	Quick-change lamp mount
54	Rotary knob for focus fine adjustment (0° assistant’s	62	Slot for filter slide
	attachment for Leica M844 only)	63	OttoFlexTM II iris diaphragm

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

13

Controls

Leica M844 accessories

A comprehensive range of accessories enables the Leica M844 surgical microscope to be matched to the requirements of the task in hand. Your Leica representative will be pleased to help you select the appropriate accessories.

0° assistant’s attachment

		64	Documentation port
64	65	65	Rotary ring for adjusting the diaphragm
			Closing the diaphragm can affect the red reflex in
			the video image.
		66	Clamping screw for locking the binocular tube in place
			Optionally, the clamping screw can be replaced
			with the provided slotted screw.
	66	67	Clamping screw for releasing the quick changer
		68	Focus fine adjustment knob
		69	Lever for turning the binocular tube by ±15°

67

69

68

Double wing

The Double Wing allows for a third observer in addition to the surgeon and the assistant.

•the same image detail for each observer

•50 % light distribution with the assistant, still 100 % light for the surgeon

•100 % stereopsis for all observers

•±15° horizontal rotation of binocular tubes

The M84x Double Wing (10446740) is available as an optional accessory.

14	Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

Controls

Leica M820 accessories

A comprehensive range of accessories enables the Leica M820 surgical microscope to be matched to the requirements of the task in hand. Your Leica representative will be pleased to help you select the appropriate accessories.

Beam splitter

Beam splitter, rotatable, 50/50%

1

Attachment for second observer

• Allows viewing by a second person or documentation

• Light distribution: 50% to the side, 50% backwards

• The side exit allows a 180° rotation to the left and right

• Rotate always completely to the left or right side and tighten with clamping screw (1)

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

15

Controls

Leica M844 and Leica M820 accessories

75 65 55

Binocular tube 10° – 50° UltraLowTM II

•with extra-low viewing height

•adjustable viewing angle and height

•adjustable interpupillary distance

75 65 55

Binocular tube 10° – 50° with PD

•adjustable viewing angle and height

•adjustable interpupillary distance

Binocular tube 10° – 50°, low

•adjustable viewing angle and height

•adjustable interpupillary distance

Binocular tube, 180° variable

• tilts 180°

Binocular tube 5° – 25°

•adjustable viewing angle and height

•adjustable interpupillary distance

Binocular tube, low

• not tiltable

Binocular tube 30° – 150°

•tilts 120°

•adjustable interpupillary distance

16	Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

Controls

	Foot/handswitches and handles
	Standard configuration "Cataract"	16-function footswitch, cross
	Here is an overview of all possible footswitches and
	handswitches that you can use to control your Leica M820 and
	Leica M844 surgical microscopes with the standard
	configuration "Cataract".
	Footswitches, handswitches and handles can be
	individually assigned for each user in the configuration
	menu (see page 43).
	12-function footswitch, cross

Handswitch

12-function footswitch, long

Handles

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

17

Controls

Standard configuration "Retina"

Here is an overview of all possible footswitches and handswitches that you can use to control your Leica M820 and Leica M844 surgical microscopes with the standard configuration "Retina".

Footswitches, handswitches and handles can be individually assigned for each user in the configuration menu (see page 43).

12-function footswitch, cross

12-function footswitch, long

16-function footswitch, cross

Handswitch

Handles

18	Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

Controls

Video and photo accessories for Leica M844

I I

H D

B

A

C

D

E

F

G

A

Leica 2D pick-up

F

Zoom video adapter

B

0° assistant’s attachment

G

Phototube

C

Photo/TV dual attachment

H

Video camera (such as the Leica D2D V3)

D

Photocamera

I

Leica 2D C-Mount

E

TV attachment

Leica 2D pick-up

•Video system for recording 2D video sequences.

•The camera (A) is installed between the assistant’s attachment and the binocular tube.

Leica 2D C-Mount

•Video system for recording 2D video sequences.

•The camera (I) is mounted on the TV attachment or zoom video adapter.

Photo/TV dual attachment

•For using a video camera with C-mount at the same time as an SLR camera.

Complete with adapters.

•Video camera engageable in 45° increments.

•Video outlet with incorporated brightness adjustment (3 positions).

TV attachment

•For commercially-available video cameras with C-mount, complete with adapter.

•The TV tube attachment (E) is installed at the video port of the 0° assistant’s attachment.

•Video camera can be latched in 90° increments.

Zoom video adapter

•For commercially-available video cameras with C-mount, complete with adapter.

•The zoom video adapter (F) is installed at the video port of the 0° assistant’s attachment.

•Zoom and fine focus function for Leica zoom video adapter

Phototube

•Complete with adapter, for SLR cameras.

•Adapter f = 250 mm: for large fields of view and short

exposure times.

•Adapter f = 350 mm: for high magnifications.

•The phototube (G) is installed at the video port of the 0° assistant’s attachment.

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

19

Controls

Video and photo accessories for Leica M820

I I

H D

A

B

C

D

E

F

G

A

Leica 2D pick-up

F

Zoom video adapter

B

Beam splitter (50/50 % or 70/30 %)

G

Phototube

C

Photo/TV dual attachment

H

Video camera (such as the Leica D2D V3)

D

Photocamera

I

Leica 2D C-Mount

E

TV attachment

Leica 2D pick-up

•Video system for recording 2D video sequences.

•The camera (A) is installed between the optics carrier and the binocular tube.

Leica 2D C-Mount

•Video system for recording 2D video sequences.

•The camera (I) is mounted on the TV attachment or zoom video adapter.

Photo/TV dual attachment

•For using a video camera with C-mount at the same time as an SLR camera.

Complete with adapters.

•Video camera engageable in 45° increments.

•Video outlet with incorporated brightness adjustment (3 positions).

TV attachment

•For commercially-available video cameras with C-mount, complete with adapter.

•The TV tube attachment (E) is installed at the beam splitter.

•Video camera engageable in 90° increments.

Zoom video adapter

•For commercially-available video cameras with C-mount, complete with adapter.

•The zoom video adapter (F) is installed at the beam splitter.

•Zoom and fine focus function for Leica zoom video adapter

Phototube

•Complete with adapter, for SLR cameras.

•Adapter f = 250 mm: for large fields of view and short

exposure times.

•Adapter f = 350 mm: for high magnifications.

•The phototube (G) is installed at the beam splitter.

20	Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

Preparation for operation

Checklist: Before the operation

Cleaning the optical accessories

Select the eyepieces, objective and the documentation accessories (if used) and check them for cleanliness.

Remove dust and dirt (see page 58).

Checking accessories

Lock the swing arm.

Outfit the microscope with all accessories for use (see pages 22-24).

Turn 0°-assistant’s attachment to the desired side

(Leica M844, see page 25) or install attachment for second observer on the desired side (Leica M820).

Balancing

Release and balance swing arm (see pages 33 and 34).

Function check

Switch the microscope on.

Warning 1

Motors return to their home positions

Before switching on the microscope, ensure that the travel paths of the X- and Y-axes and the focus motor are free of obstructions.

Check the Main Light 1, Main Light 2 and OttoFlexTM II illuminators. Replace defective bulbs before the operation begins.

Test all handswitch and footswitch functions.Check the brake function using both the handles and

the remote brake release (see page 33).

Positioning at the OP table

Position the surgical microscope at the operating table as desired and secure the brakes on the floor stand.

(see page 36).

Checking tube settings

Check the tube and eyepiece setting for the selected user (see page 24).

Treat the eyepieces with an antifogging compound if necessary.

Sterility

Fit sterile components and sterile drape if used (see page 59).

Warning 2

Danger of fatal electric shock

Operate the system only with all equipment in its proper position (all covers fitted, doors closed).

Leica M844 – Leica M820 / Ref. 10 713 294 / Version I

21