FORM 2
The Patent Act 1970
(39 of 1970)
&
The Patent Rules  2005

COMPLETE SPECIFICATION
(SEE SECTION 10 AND RULE 13)

“Battery less Portable Medical Devices”

APPLICANTS:

Name : HCL Technologies Limited.

Nationality : Indian.

Address : HCL Technologies Ltd.  50-53 Greams
Road  Chennai – 600006  Tamil Nadu  India

The following specification particularly describes and ascertains the nature of this invention and the manner in which it is to be performed:

FIELD OF INVENTION
[001] This invention relates to portable handheld medical devices and in particular to handheld devices functioning without batteries.
BACKGROUND OF INVENTION
[002] Handheld portable medical devices have revolutionized the patient monitoring and health care industry in a big way. The hospital as well as patients can easily monitor their health using suitable handheld medical devices. And with the help of advances in communication technology one can keep log of readings taken by a device  communicate changes to medical service provider and also prompt for immediate action in case of an emergency.
[003] Most of the handheld portable medical devices have a battery acting as their power source. Some devices make use of lightweight  slow discharging batteries for longer life. Some use rechargeable batteries  which need to be connected to an external power source for charging. The use of batteries increases the volume and weight of the handheld portable medical device. In addition  most batteries end up in landfills polluting the environment.

OBJECT OF INVENTION
[004] The principal object of the invention is to provide a battery less portable medical device.
[005] Another object of the invention is to use power supply from a commonly used external device similar to a USB port.

STATEMENT OF INVENTION
[006] Accordingly the invention provides a battery less handled portable medical system for monitoring physiological parameters. The system contains a handled portable medical device and an external device for powering the said handled portable medical system. The external device powers the handheld portable medical device using a medical grade USB cable or any similar cable. The external device may be a commonly used device like a laptop or a mobile phone.

[007] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood  however  that the following descriptions  while indicating preferred embodiments and numerous specific details thereof  are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof  and the embodiments herein include all such modifications.

BRIEF DESCRIPTION OF FIGURES
[008] This invention is illustrated in the accompanying drawings  throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings  in which:
[009] FIG. 1 illustrates a broad block diagram showing the connection between an external device and portable medical device  according to the embodiments disclosed herein;
[0010] FIG. 2 illustrates a block diagram showing the connectivity between an external device and portable medical device through an power cable  according to the embodiments disclosed herein and
[0011] FIG. 3 is a flowchart describing the process of using a handheld portable medical device without batteries  according to the embodiments as disclosed herein.

DETAILED DESCRIPTION OF INVENTION
[0012] The embodiments herein  the various features  and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly  the examples should not be construed as limiting the scope of the embodiments herein.
[0013] FIG. 1 illustrates a broad block diagram showing the connection between an external device and portable medical device  according to the embodiments disclosed herein. An external device 101 is connected to the portable medical device 102 using a USB cable. The portable medical device 102 may be any handled device like blood sugar monitor or a blood pressure or pulse oxymeter  similar device. The external device 101 may be any commonly used device from which power can be drawn. To draw power  a USB port in an external device like a mobile phone or a laptop may be used. A medical grade USB cable may also be used. The portable medical device 102 does not contain batteries and draws power from the external device 101 when connected. Once the portable medical device 102 is connected to the external device 101 and power is on the portable medical device may be switched on and used. After using the external device 101 is disconnected  the portable medical device 102 is off and has no power. Not using batteries in the portable medical device 102 makes it smaller in size  reduces cost to OEM and the user for the power source
[0014] FIG. 2 illustrates a block diagram showing the connectivity between an external device and portable medical device through a USB cable  according to the embodiments disclosed herein. The USB port with all the PINS is shown in the external device 101. The external device comprises of a host system 201 and a battery 202. The battery 202 powers both the host system and VBUS pin of the USB port. The portable medical device 102 connects to the host system 101/external device via an USB cable. The VBUS port of the USB cable supplies power to the portable medical device. As most of the portable medical device require vey little power for operation  the current supplied by the VBUS pin of the USB port is sufficient.

[0015] FIG. 3 is a flowchart describing the process of using a handheld portable medical device without batteries  according to the embodiments as disclosed herein. External device 101 is connected 301 to the portable medical device 102 using a USB cable. This USB cable is a medical grade USB cable. User then switches 302 on the portable medical device 102. The display screen of the portable medical device 102 shows 303-power availability using an icon. The user then makes user 304 of the portable medical device 102. After using  use switches 305 of the portable medical device and removes 306 connecting the external device and the portable medical device.
[0016] The above embodiments disclose use of a USB cable  however  any other cable capable of powering a device by drawing power from another device may be used.
[0017] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can  by applying current knowledge  readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept  and  therefore  such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore  while the embodiments herein have been described in terms of preferred embodiments  those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
STATEMENT OF CLAIMS
1. A handheld portable medical system for monitoring physiological parameters  said system comprising of:
a handled portable medical device; and
an external device powering said handheld portable medical device 
wherein said handheld portable medical does not include a power source.
2. The battery less handled portable medical system of claim 1  wherein said handheld portable medical device may be a blood glucose meter.
3. The battery less handled portable medical system of claim 1  wherein said handheld portable medical device may be a Pulse oxymeter.
4. The battery less handled portable medical system of claim 1  wherein said external device may connect to the handheld portable medical device using a medical grade USB cable.

Dated: 5th day of September  2012 Signature:
Dr Kalyan Chakravarthy
(Patent Agent)
ABSTRACT
This invention relates to portable handheld medical devices and in particular to handheld devices functioning without batteries. The medical device connects to an external system and receives power. The external systems may include everyday device like a laptop or a mobile phone and so on. The medical device operates once the power source is connected. After use of the device  the device can be shut and connection between is removed.

FIG. 1