F O R M 2
THE PATENTS ACT, 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10; rule 13)
1. Title of the invention: PATIENT MONITOR WITH AUTOMATIC
CONFIGURATION OF DISPLAY FORMAT BASED ON THE CABLE AND SENSOR
DETECTION
2. Applicant(s):
(a) NAME : LARSEN & TOUBRO LIMITED
(b) NATIONALITY : An Indian Company
(c) ADDRESS : L & T House, Ballard Estate, Mumbai 400 001,
State of Maharashtra, India and also having a place of business named as "Medical Equipments & Systems" at Gate No. 5, Mysore Campus, KIADB Industrial Area, Hebbal, Mysore- 570018 Karnataka, India
3. PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed:

FIELD OF THE INVENTION
The present invention relates to a patient monitor device. More particularly, the invention relates to an improved patient monitor device which automatically senses the various types of sensors while being connected or disconnected to the device and accordingly reformats and adjusts the display screen to assist the caregiver.
BACKGROUND AND PRIOR ART OF THE INVENTION
In the prior art devices whenever the cable with sensor is connected & disconnected from the patient monitor (PMS), the screen is still used to show the parameters & waveform baseline related to that sensor cable. For practical purpose this is not needed since sensor cable or plug-in module itself is disconnected.
In this prior art although the parameter is not being monitored, it occupies a portion of the Real Time -Display LCD screen 104. In order to remove these parameters being displayed, user need to manually reformat the display screen using display edit user interface.
At the same time when other sensor cables are connected, the numerical & waveform value related to new sensor cable to be displayed. There shall not be a need for manually reconfiguring the display format upon connection of the parameter. In the prior art this erasing the screen & displaying the new parameter is done manually by operating the keyboard & other user input devices like 108,110,112,114.
Hence there is a need for a novel patient monitor, which can automatically sense the various types of bio-signal sensor cables connected & disconnected & accordingly reformat & adjust the display screen to assist the caregiver to provide speedy service.

OBJECTS OF THE INVENTION
One object of the present invention is to overcome the disadvantages / drawbacks of the prior art.
A basic object of the present invention is to provide an improved patient monitor device that will automatically sense the various types of bio-signal sensor cables connected & disconnected & accordingly reformat & adjust the display screen to assist the caregiver to provide speedy service.
Another object of the present invention is to provide an improved patient monitor device that has provision of mechanically & electrically connecting physiological signal acquisition modules & biomedical sensors which can be plugged out or connected in either before switching on the patient monitor or midway during the course of its operation.
Yet another object of the present invention is to provide an improved patient monitor device to monitor real time invasive blood pressure for at least two places on human body and can display the waveforms overlapped one on another and accordingly readjust the TFT-LCD screen to display the waveform & numeric value.
These and other advantages of the present invention will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings.
SUMMARY OF THE INVENTION
The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the present invention. It is not intended to identify the key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concept of the invention in a simplified form as a prelude to a more detailed description of the invention presented later.

According to one of the aspect of the present invention the system is provided an improved patient monitoring device, said device comprising : a modular enclosure having a front side and a back side;
a controller means positioned inside the said enclosure, said controller means converting various physiological signals into their corresponding digital forms;
plurality of detachable plug-in modules operatively connected to said controller means, wherein said plug-in modules receiving various physiological signals from a target body and transferring said signals to said controller means;
plurality of detachable sensor cable means operatively connected with said plug-in module, wherein said sensor cable means sense various physiological signals from the target body and transfer them to said plug-in module;
input means operatively connected with said controller means and placed on the front side of said enclosure;
output display means operatively connected with said controller means placed on the front side of said enclosure means;
wherein said device automatically sense the various types of sensor cables connected and disconnected and accordingly reformat and adjust the display screen to assist the caregiver to provide speedy service;
wherein said sensors output means displays numeric and waveform information pertaining to the sensors actually connected to the device and not the one which are disconnected.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
Other features as well as the advantages of the invention will be clear from the following
description.
In the appended drawing:
Figure 1 illustrates a device modular field configurable multipara monitor with automatic configuration of display format-overall front view.
Figure 2 illustrates a device modular field configurable multipara monitor with automatic configuration of display format-overall back side view.
DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWING
In the following detailed description, reference is made to the accompanying drawings that form a part hereof, and illustrate the best mode presently contemplated for carrying out the invention. Further functioning of the system and method has been discussed below to describe the way it operates. However, such description should not be considered as any limitation of scope of the present system. The structure thus conceived is susceptible of numerous modifications and variations, all the details may furthermore be replaced with elements having technical equivalence. In practice the materials and dimensions may be any according to the requirements, which will still be comprised within its true spirit.
The working of this invention can be easily understood by referring to Fig 1. Fig2.
The Fig 1 , shows the overall front view of the patient monitor which is modular and field configurable .
Part 102 is an enclosure or cabinet for this novel patient monitor with automatic configuration of display format based on the patient interface cables & sensors connected.

This enclosure is injection molded from master batch resins which are biocompatible plastics and composites. This enclosure is rectangular in shape. Although for the reason of clarity in drawings only one type of enclosure with few sensor cables are explained. It is understood that other shapes of enclosures with the sensor cables not described in this invention can also be used without deviating from the sprit & scope of the invention. All such modifications improvements still fall within the scope of this invention.
The enclosure 102 contains a mains power supply inlet socket part 202. This socket is electrically connected to a AC to DC power supply part 204. This AC/DC power supply will convert the energy in to regulated DC . The input a.c. can be as low as 85 volt to as high as 265 volts a.c.
This output of Part 204 can be as low as 11 volt d.c. to as high as 18 volt d.c.
This d.c. is electrically connected to DC/DC voltage converter part 206. The 206 consists of a PCB and several power converting circuits with outputs like 5 volt dc, 12 volt dc, -15 volt dc , 3.3 volt dc and so on.
This highly regulated and noise /ripple free voltage is fed to various electronic circuits assembled inside the enclosure 102.
The same power also can be fed to add on modules and accessories connected to the main unit enclosure 102.
A part of the DC voltage module 206 is electrically connected to a battery-pack 208 containing battery charging circuit part. This part 208 has got various electronic circuits for charging the battery pack whenever AC power is available. Whenever AC power is not available & the system is ON, the pack 208 will be discharged and feed the DC power to all the circuits inside the enclosure 102 as well as modules 120,116,118.

The plug-in modules 120,116,118 are mechanically identical modules with same dimensions & outside features. These are made from plastic material such as ABS , PC and so on.
These module mainly contain analog front end signal acquisition circuit which is connected to the human body using suitable sensors & cables. The various sensors & matching cables can be designed & accommodated inside the modules 116,118 & 118. The inside circuits will change accordingly with the physiological signal to be detected.
For the purpose of easy explanation only few types of modules have be explained. The electrocardiograph & pulse oxymeter are two of them. But as the new circuits are designed for other physiological signal measurement new modules can be manufactured & purchased by the caregiver for use with already purchased base monitor 102.
Only the sensor cables design of 126,128,132,134 will change & the connector configuration of 122 & similar front panel connectors.
Even when the new module is inserted in to base monitor 102 it will recognize & will display the waveform & numeric values on the screen 104. Also there is no restriction that the module 120 should be inserted into the slot 214. It can be inserted into any other slot also since the signal between the connector pair 212 &124 is in digital form.
The Battery pack 208 is detachable from the main enclosure 102. The battery pack 208 is a rectangular shaped plastic enclosure containing Lithium–ion or similar cells.
The DC power from 206 is electrically connected to the motherboard 210.
This motherboard 210 is connected to a TFT – flat panel LCD display 104 that has also a touch screen panel 106 on the outer surface facing the user of the equipment.

The main /mother board 210 will contain a CPU or embedded micro-controller, RAM, Flash Disk, Hard Disk, Micro-disk, RS232 to TTL communication circuit to accept analog OEM modules, USB / LAN / Blue-tooth, inter connecting circuits and so on………
The TFT display 104 will display the information through Graphical user Interface so that the necessary information in text /graphic / waveform is displayed & can be understandable by human beings.
The inputs to the motherboard 210 are entered through on screen secure keyboard 108.
For regular use there is one capacitive touch activated keyboard 110 provided with system ON/OFF 112 and few other menu keys.
The part 114 is technically known as “optical encoder” which is having a push button – vertical movement switch and position coded horizontal & circular photo switches. Together this will act like a navigation key and mimic the functions of mouse and joysticks found in computers known in the prior art.
Having covered overall functioning of the invention, now it is easy to understand how the plug-in modules with analog front end signal acquisition circuits will pick the various physiological signals from the human body and after converting them in suitable digital form with the help of main board 210 will display on 104.
The part 116,118, 120 are plastic enclosures with patient interface connectors 122 at proximal end and base unit 102 interfaced “plug-in blind mate connectors” part 124 at distal end.

When the module 120 is pushed along the sliding socket part 214, the blind mating connector Part 124 will slide and make electrical & mechanical registration with the connector 212. The same action is true for other modules 116 & 118.
The part 126 is a electro-cardio-graphic cable with electrical & mechanical registration with 122 & having colored lead wires with Hydrogel electrodes at distal end. These electrodes are connected to various parts of the patient body.
The analog signals with voltage level of few milli volts are gathered by 126 & fed to the noise & transient filtering circuit placed inside 116. This signal is then amplified & converted to digital form. The digitized signal travels through 124 & 212 to reach the motherboard 210. The motherboard with the help of suitable circuits algorithm processes this signal & displays on TFT –LCD 104.
Since novelty is for automatic detection of modules & biomedical sensors with minimum human intervention these circuits are not elaborated.
Similarly 128 is a connector at proximal end with pulse oxymeter finger probe sensor on the distal.
The probe sensor has got light radiation emitters & photo sensors. The patient’s finger is sandwiched between these emitters & photodiodes. The amount of light absorbed at particular wavelength ( say 660 nm / 905 nm ) by oxygenated hemoglobin which is present in the red blood cells flowing through the arterioles of the finger is directly proportional to their concentration.
This signal which represents the oxygen saturation abbreviated as SpO2 / SaO2 is fed to the module 118. After filtering & amplification using the digital circuits the signal travels through blind mating connectors and reaches motherboard 210.
The motherboard with the help of suitable circuits processes this signal & displays on TFT – LCD 104.

Since important feature is for automatic detection of modules & biomedical sensors with minimum human intervention these circuits are not elaborated. Also the important feature is selection of pre listed modules & sensors for a particular surgical procedure & ensuring by the monitor that all the listed sensors & modules are connected to the monitor.
The body temperature of the patient is detected using a thermistor based temperature probe 130.
The proportional signal generated, which is in analog form is again digitized after suitable filtering & amplification using the electronic circuits placed inside the 102 & sent to motherboard 210.
The motherboard with the help of suitable circuits algorithm processes this signal & displays on TFT –LCD 104.
Each module 116,118,120 may have different function, different circuit, and different signal acquisition circuitry & accessories depending upon the configuration needed for the particular event or episode.
The various modules & sensor cables are a) 3 lead /5 lead/12 lead ECG, b) Pulse Oximetry – Spo2 , c) Non-invasive blood pressure NIBP, d) Body temperature measurement using thermistor based or thermopile sensors, e) Invasive arterial blood pressure measurement using diaphragm pressure transducers, f) Respiration rate detection using thoracic impedance pneumography, g) Invasive Cardiac output using catheter , h)non-invasive cardiac output , i) Capnography.
The above list is non-exhaustive. So all the modules are not explained in this application.
With the above description it is clear that the modules 116,118,120,cables 126,128,130, & the sensors connected to base monitor 132, 134 all are detachable & configurable. In the present day hospital care scenario, there is an unfulfilled need for quick configuration & auto detection of sensors connected & the corresponding display of screen format.

Whenever any of the above sensors are connected it is desired that a portion of the screen to be
reserved automatically without the need to manually reformat the display screen for displaying
the numerical & waveform value of that specific parameter for which the sensor cable is
connected.
The automatic format of screen depending upon the sensor cable connected is as follows. The
base PMS unit 102 is switched on using the ON/OFF key 112. After booting & self-test, the
primary menu with easy format selection screen will appear on the display 104 as shown below.
Table 1

Bed to Bed Format
Standard 1
Standard 2
Easy Format
User 1
User 2
User 3
User 4
When easy format soft button is selected ( by means of 108,110,112,114 )is selected the easy format selection screen will appear as shown below.
Table 2

Easy Format Selection Screen

Waveform selections
Numeric Selections

All available(detected) waveforms parameters All available(detected) numeric parameters
Save & Display Exit
The options shown in Waveform selections & Numeric Selections menu are only for the parameters for which the plug-in module or sensor cable is connected.
The easy format screen is such a way that it will fit in a maximum of 8 waveform fields and maximum of 3 numeric fields. The template for the easy format screen when all 8 waveform fields and 1 numeric fields are selected is as shown below. There will be a single row of numeric display.
Table 3

W/F 1 (waveform one) W/F 1 numeric
W/F 2 W/F 2 numeric
W/F 3 W/F 3 numeric
W/F 4 W/F 4 numeric
W/F 5 W/F 5 numeric
W/F 6 W/F 6 numeric
W/F 7 W/F 7 numeric
W/F 8 W/F 8 numeric
Numeric 1 Numeric 2 Num eric 3

If the user selects only 5 waveform fields and 2 numeric fields, the screen will resize to adjust to exactly 5 waveform fields and 2 numeric fields as shown below so that there shall not be any blank waveform fields on the screen .
Table 4

W/F 1 W/F 1 numeric
W/F 2 W/F 2 numeric
W/F 3 W/F 3 numeric
W/F 4 W/F 4 numeric
W/F 5 W/F 5 numeric
Numeric 1 Numeric 2
The screen will resize automatically upon connection or removing of a parameter from the monitor.
By way of an example if the total waveform area is 1024*800 pixels on the display and the present number of waveforms are 5 with one numeric field and if one numeric parameter is withdrawn the leftover 5 waveforms should still occupy 1024*800 total area and resize by itself.
Also when a parameter cable/sensor/module is connected to the monitor, a waveform-display area and numeric display areas are automatically assigned on the Real Time screen for display of the parameter's numeric values and waveforms.
Also when a user is using the easy format and one of the parameter has been removed from the monitor at run time the screen will resize to adjust to fit in all the other selected parameters. To illustrate the above scenario two user cases are listed below.

User Case 1
If only SpO2 cable 128 had been detected then the whole screen shall adjust to fit into just 1 waveform i.e. SpO2 waveform. At this time if an ECG cable 126 was inserted the screen will resize to adjust to 2 waveforms i.e. SpO2 and ECG.
User Case 2
If SpO2 sensor 128 and ECG sensor 126 were being monitored at an instance and SpO2 cable was withdrawn from the monitor. The screen will resize to adjust to only 1 parameter i.e. ECG.
The invention has got Dual IBP which means that there are two channels 132,134 which can record Invasive Blood Pressure continuously. With this the caregiver can see Blood pressure at two separate sites simultaneously.
The Invasive technique monitors Blood Pressure continuously at high accuracies and hence is a preferred method for monitoring in Cardiac care units, Cardio-Thoracic units, Neuro Surgical units, ICU’s, Trauma Care units and like.
The displaying of two IBP waveforms overlapped with one another has got significant benefits for calculating the timing difference & the comparison of pulse wave shape between two waveforms.
When IBP overlap has been done in the real time screen, the waveform setup menu that will appear on selection of the IBP overlapped waveform field is as follows.
Table 5
IBP Overlap Waveform Setup

Freeze Unfreeze
IBP 1* Scale 300
IBP 2* Scale 300
ART* Scale 300
W/F speed
Online Trend enabled
Disable IBP Overlap
Exit
Since the mean pressure is significant for the caregiver it is prominently displayed with a larger font in numeric field. Systolic and Diastolic pressure numeric displays shall be displayed with dull intensity and with a smaller font. The following invasive pressures are measured by the sensors 132,134 depending upon the sensors connected to the distal end. For the simplicity these distal sensors are not shown in the drawing. The sensor 132 contains a pressure sensor to which invasive blood pressure catheter is connected. The invasive blood pressure catheter is inserted into the artery with a parallel tube being connected to the intravenous fluid bottle containing glucose or dextrose. The bottle will be hanging from a height so that a pressure is exerted on the pressure sensor. At the same time the pulsating pressure of the blood exerted on the pressure sensor also generates the variable pressure on the sensor. This pulsating pressure is converted in to electrically signals by the part 132 or 134 and fed to the main unit 102. With the help of suitable circuits these week signals are filtered, amplified and displayed on 104.

Also only the mean pressure value is taken for ICP,CVP,PCW,LAP,RAP for trend display.
a. ICP(Intra Cranial Pressure)
b. CVP(Central Venous Pressure)
c. PCW(Pulmonary capillary Wedge Pressure)
d. LAP(Left Arterial pressure)
e. RAP(Right Arterial pressure)
When the pressure reading for the above crosses the preset limit there is need to raise the visual & audible alarm. The part 136 is visual alarm, which emits RED color, & 218 is audible tone, melody or voice message generated with the help of motherboard 210.
Table 6 : The default alarm limit values for the different IBP labels are:

LABE L Operating Range Default Scale Adult/Pediatric Neonatal

SYSTOLIC DIASTOLI C
HIGH
130
13
65
130
26 SYSTOLIC DIASTOLIC

LOW
60
6
30
60
12 HIGH
140
14
70
140
122 LOW
LOW
45
4
22
45
9 HIGH
80
8
40
80
16 LOW
20
2
10
20
4 HIGH
IBP
PAP
LVP
ART
User defined -30 to 300 300

50



45

-30 to 40 40

5



4

-30 to 70 80

25



22

-30 to 300 300

50



45

-30 to 300 300

10



9
LVP means left ventricular pressure

ART means arterial blood pressure PAP means Pulmonary Artery Pressure IBP means Invasive blood pressure
Table 7:

LABEL Operating Range Default Scale Adult/Pe diatric Neor atal

Mean Mea
LOW
2
2
2
2
2 n

LOW HIGH
HIGH
ICP -30 to 40 40 4 10
4
CVP -30 to 40 40 2 10
4
PCW -30 to 40 40 2 20
10
LAP -30 to 40 40 2 10
4
RAP -30 to 40 40 2 10
4
With this invention where it can automatically sense the various types of bio-signal sensor cables and modules connected / disconnected & accordingly reformat & adjust the display screen to assist the caregiver to provide speedy service there is a need for a “master system information screen”.
This “master system information screen” will have the information of all the modules present in the monitor and the additional information.
The typical text displayed on the screen is as below.

Module software version info
(master system information screen)
System Ver ERT Ver
IBP internal Ver : IBP external Ver :
NIBP Ver SpO2 Ver
CO2 Ver DC-DC Ver
Keyboard Ver : Ambient Temperature:
System Temperature Remote Temperature:
The part 126 is 3 Lead ECG cable. This is used for overall monitoring of cardiac activity of the patient. Frequently a need arises to disconnect this 126 cable & insert a 12 lead cardiac monitoring cable for the detailed diagnosis of the heart. This invention will detect the changeover of 3 lead to 12 lead & will display the screen 104 accordingly.
The Quick 12L Format is a toggle button under main menu “ECG Numeric Setup”, which is displayed upon the selection of Auto 12L in Cable Mode.

ECG Numeric Setup Menu
Alarm Setup >>>>
Cable Mode Auto12 Lead

ECG Filt Mode MON
Pacer ON
Arrhythmia ON
Arrhythmia setup >>>>
Quick 12L Format
Other Setup >>>>
Exit
Upon selection of the Quick12L Format a new window is displayed. The typical text screen view is as shown below

L1 V1
LII V2
LIII V3
aVR V4
aVL V5
aVF V6
Acquisition Left
Move
<< Right Move >> Cursor Print Exit
Admi t
Patie nt T
r
e
n
d Displa y
Forma t Alar m
Settin g Vo
lu
me L
e
ft
M
o
v
e Para Set-up PR Source Night Mode Patient Options Right Move
QUICK 12LEAD FORMAT

QUICK 12LFORMAT

L1 V1
LII V2
LIII V3 T1 ∆ T5mm T2
∆|-------
--- A1
| | A
25mV
|-------
--- A2
aVR V4
aVL V5
aVF V6
T1 T 2 A1 A2 ◄ ► ▲ ▼ Back
P
Dis Ala Le
ft
M
ov
e R S o u rc Nig Pati
Admit Tre play rm Vol
Para
ht ent Right
Patient nd For Sett ume
Setup
Mo Opt Move
mat ing

de ions
e





With the above description of the invention it is clear that the system enables the user to configure the display format according to one’s choice and to confirm the selected/configured display format. The patient monitors manufactured are available in premium, mid-range & entry level depending upon the place to be used & the buyer’s capacity to purchase.
Many times the tendency is to use an entry-level monitor for surgical or high demanding application. Sometime if is mandatory to monitor five vital sign where as the caregiver may use entry-level monitor with just three available vital signs.
To prevent this the monitor described in this invention will be pre-programmed with list of surgical procedures that can be conducted with the help of this monitor. This will be depending upon the category of the model. The caregiver will select one of the surgical procedures from the pull down menu displayed on 104 using input devices 110,114,108.
The pull down menu list the vital signs needed to conduct particular surgery.
The motherboard 210 then checks the vital sign modules & sensor cables already present in the monitor. Then a visual prompt is displayed on 104 asking the caregiver to Plug-in & connect the rest of the modules & sensors. Till then a warning alarm in BLUE color may be displayed at 136.
Only when all the parameters are connected to the monitor and patient, the monitor starts monitoring the patient & starts recording the trend in its memory.
With this the system tries to comply with the standards & guideline needed for minimal vital signs needed for monitoring surgical procedures.
Features • The patient monitoring device having power supply, motherboard, battery pack, TFT-LCD display device, capacitive touch keyboard, optical encoder, touch

screen, analog front end modules with physiological signal acquisition circuits along with various cables attached with sensors connected to human body.
• The patient monitor having a provision of mechanically & electrically connecting physiological signal acquisition modules & biomedical sensors which can be plugged out or connected in either before switching on the patient monitor or midway during the course of its operation.
• The patient monitor where the automatic detection of modules & biomedical sensors takes place with minimum human intervention and accordingly the TFT-LCD display screen displays numeric & waveform information pertaining to the sensors & cables actually connected to the system and not the one which are disconnected.
• The monitor having a provision to monitor real time invasive blood pressure for at least two places on human body and can display the waveforms overlapped one on another and accordingly readjust the TFT-LCD screen to display the waveform & numeric value.

• The various invasive blood pressures as recited in 4 being ICP (Intra Cranial Pressure) ,CVP (Central Venous Pressure),PCW(Pulmonary capillary Wedge Pressure),LAP(Left Arterial pressure),RAP(Right Arterial pressure.
• The patient monitor system having a “master system information screen” were the information of all the modules & sensor cables present in the monitor being displayed.

• The patient monitor where it detects a 3 Lead ECG cable and checks for disconnection & a connection of 12 lead cardiac monitoring cable for the detailed diagnosis of the heart. The TFT-LCD screen where the detailed view of 12 lead are shown.
• The vital parameters acquired & displayed in this invention are SPO2(pulse oxymeter),ECG(electrocardiography),IBP(invasive blood pressure),NIBP(non-

invasive blood pressure),T1/T2 ( body temperature), EtCo2(respiration and carbon dioxide monitoring), cardiac output monitoring,
• The patient monitor where a list of surgical procedures & pre-programmed medical conditions available in the menu form and upon selecting the appropriate surgical procedure the monitor checks whether the vital sign modules & sensors available for the selected surgery and if not asks the caregiver to connect remaining modules & cables.
• The patient monitor where the monitor ensures that all the vital signs needed for particular surgical procedures are connected & monitored adequately.

WE CLAIM
1. An improved patient monitoring device, said device comprising :
(i) a modular enclosure having a front side and a back side;
(ii) a controller means positioned inside said enclosure, said controller means converting various physiological signals into their corresponding digital forms;
(iii) plurality of detachable plug-in modules operatively connected to said controller means, wherein said plug-in modules receiving various physiological signals from a target body and transferring said signals to said controller means;
(iv) plurality of detachable sensor cable means operatively connected with said plug-in module, wherein said sensor cable means sense various physiological signals from the target body and transfer them to said plug-in module;
(v) input means operatively connected with said controller means and placed on the front side of said enclosure ,said input means is capacitive.
(vi) output display means operatively connected with said controller means placed on the front side of said enclosure means;

wherein said device automatically sense the various types of sensor cables connected and disconnected and accordingly reformat and adjust the display screen to assist the caregiver to provide speedy service;
wherein said sensors output means displays numeric and waveform information pertaining to the sensors actually connected to the device and not the one which are disconnected.
2. Device as claimed in claim 1 wherein said backside of said enclosure means further
comprises
Inlet socket means;
Ac /dc power supply means operatively connected with said inlet socket means to
convert energy into regulated DC;
dc/dc voltage converter means operatively connected with said ac /dc power supply
means and said controller means ;and
a battery pack means operatively connected with said dc/dc voltage converter
means .
3. Device as claimed in claim 1 wherein said plug-in modules comprises
plurality of interface connectors positioned on the proximal end of said plug-in modules to connect said sensor cables within it; and
plurality of blind mate connector means positioned at the distal end of said plug-in module .
4. Device as claimed in claim 1 wherein said output means comprises
a display means ;and

a touch screen placed on above of said display means,
5. Device as claimed in claim 1 wherein said back side of said enclosure means having plurality of socket means substantially on the distal end of said back side having sliding provisions such that each socket is having provisions to slid in said plug-in modules within it to fit in.
6. Device as claimed in claim 1 wherein said each socket means having a connector means .
7. Device as claimed in claim 1 wherein said plug-in module when pushed along the sliding socket means, said blind mating connector means slides and makes electrical and mechanical connection with the connector means.
8. Device as claimed in claim 1 wherein said plurality of sensor cable means comprises electro-cardio-graphic cable with electrical and mechanical registration interface connectors and having colored lead wires with hydrogel electrodes at distal end, said electrodes are connected to various parts of the patient body.
9. Device as claimed in claim 7 wherein said electro-cardio-graphic cable comprises 3 Lead ECG cable and checks for disconnection & a connection of 12 lead cardiac monitoring cable for the detailed diagnosis of the heart and the changeover of the cable are displayed in said display means.
10. Device as claimed in claim 1 wherein said modules is connected with atleast a pair of detachable base monitor to monitor real time invasive blood pressure for at least two places on human body and can display the waveforms overlapped one on another and accordingly readjust the said display means to display the waveform & numeric value.

11. Device as claimed in claim 1 wherein said plurality of sensor cable means comprises pulse oxymeter finger probe sensor.
12. Device as claimed in claim 1 further comprises a master system information screen on said display means were the information of all the modules & sensor cables present in the monitor being displayed.
13. Device as claimed in claim 1 further comprising plurality of alarm means connected with said processor means adapted to raise audio or visual alarm when the reading crosses the present set limit.
14. Device as claimed in claim 1 wherein said physiological parameters acquired & displayed comprises SPO2(pulse oxymeter),ECG(electrocardiography),IBP(invasive blood pressure),NIBP(non-invasive blood pressure),T1/T2 ( body temperature), EtCo2(respiration and carbon dioxide monitoring), cardiac output monitoring and the like.
15. Device as claimed in claim 1 further comprising automatic screen format displaying ‘bed to bed format’ & ‘easy format’ menu selection buttons.
16. Device as claimed in claim 15 wherein said ‘easy format’ menu button comprising displaying ‘waveform selection’ & ‘numeric button’ selection.

17. Device as claimed in claim 15 wherein said screen is resizable to adjust with the actual waveform & numerical parameters present thereby eliminating any blank waveform fields on the screen.
18. Device as claimed in any preceding claim wherein said screen is automatically resizable upon connecting or removing a sensor cable, plug-in module from the monitor.
19. Device as claimed in claim 1 comprising a list of surgical procedures & pre-programmed medical conditions available in the menu form selection of which activate the monitor to check whether the vital sign modules & sensors available for the selected surgery and if not asks the caregiver to connect remaining modules & cables ensuring that all the required vital signs are monitored.
20. An improved patient monitoring device as herein substantially described and illustrated with the accompanying drawings.