AU2005237123B2 - Ambulatory calf compressor device - Google Patents
Ambulatory calf compressor device Download PDFInfo
- Publication number
- AU2005237123B2 AU2005237123B2 AU2005237123A AU2005237123A AU2005237123B2 AU 2005237123 B2 AU2005237123 B2 AU 2005237123B2 AU 2005237123 A AU2005237123 A AU 2005237123A AU 2005237123 A AU2005237123 A AU 2005237123A AU 2005237123 B2 AU2005237123 B2 AU 2005237123B2
- Authority
- AU
- Australia
- Prior art keywords
- electrical
- conductors
- battery
- electrical voltage
- sheet material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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- Electrotherapy Devices (AREA)
- Massaging Devices (AREA)
Abstract
An Ambulatory Calf Compressor Device is disclosed. The device consists of an elastic silicone rubber sheet 1 with two brass bars 2 embedded in it. The alloy bars 2 have BioMetal filaments strung between them 3 and two electrical wires 5,6. The electrical wires are subsequently attached to a rechargeable Li-Polymer 3.7v battery 7. The brass bars are attached to the BioMetal filaments via eyelets 4. An electrical switch 8 which can break the electrical circuit of the wires 5,6 can be employed to activate or turn off the device. A pre set or programmable circuit board regulates the contractive phases of the device'9.The inner workings of the device listed above may be encased in a comfortable nylon coating (not shown) and secured using a Velcro strap or other method of securing (not shown) Raj RAMAKRISHNA 7/11/2004 I: * a * N 1) a ft a (I a a a 0~- a a It ~0- *---- 0 I a t ft 7
Description
AUSTRALIA PATENTS ACT 1990 PROVISIONAL SPECIFICATION AMBULATORY CALF COMPRESSOR DEVICE The invention is described in the following statement, including the best method of performing its uoe lnown to me: - 1 Ambulatory calf compressor device [0001] This invention relates to improvements in the care and treatment of Patients who are at high risk of/or undergoing treatment for the medical condition DVT (Deep Vein Thrombosis). It can also be used by the general public in situations where they may be required to sit or remain immobile for extended periods such as would occur on long plane trips or other such transport. [0002] Its principal function is to apply a steady compressive force at set time intervals to the wearers calf via battery operated BioMetal fibres (also known as an example of a 'Shape Memory Alloy' or SMA). This rhythmical compression reduces or eliminates the incidence of DVT in the wearer. Compressive forces such as those provided by this invention have been proven by clinical trials in other devices, however, this invention presents a vast improvement in that it is fully mobile and light weight. Other devices of this nature are usually large cumbersome machines which are primarily used within Hospitals. Due to their large dimensions and reliance on 240v mains power, these Hospital DVT devices are not ambulatory and hence cannot be taken home by the Patient for continued care or used by people in transit. Additionally, this invention has been designed to fit comfortably allowing for the user to continue their daily activities uninhibited. [0003] According to the invention, there is provided a device including: electrical energy source means including a positive and a negative terminal and circuit means to selectively apply an electrical voltage of non-zero value across the terminals, the electrical energy source means being portable; sheet material means adapted to be wrapped about a human calf; at least one pair of spaced apart electrical conductors attached to or within the sheet material means; electrically conductive means connecting respective terminals and conductors; at least one filament of SMA electrically connected between the conductors and attached to or within the sheet material means; and the device being adapted, when wrapped about the human calf and when the electrical voltage is applied, to apply a compressive force to the calf. [0004] The workings of this device comprise of a silicone rubber sheet in which two brass bars are embedded parallel to each other at varying distances depending on the size required to fit the wearer comfortably. Attached between these brass bars are numerous BioMetal fibres or filaments. At each brass bar there is an electrical terminal, which can connect to an electrical wire. One brass bar via its terminal is attached to a red or 'positive' wire while the other brass bar is attached to a black or 'negative' wire through its terminal. These electrical wires are in turn connected to a rechargeable flat Li-polymer or Li Ion battery. A simple switch placed between one of the wires is used to activate or de-activate the device.
-2 [0005] While in its active phase, this unit would rely on a pre programmed or perhaps programmable sequence of contraction intervals and intensities dependent on the needs of the wearer and determined through clinical trials or past research. The sequence of contractions will be delivered via a simple pre set circuit board or programmable interface embedded within the unit. [0006] To assist in visualising this device reference will now be made to the accompanying drawings, which show one example of the invention. [0007] In the drawings: [0008] Fig. 1 shows one example of the intrinsic parts of the Ambulatory Calf Compressor Device according to this invention. Please note an external skin of nylon or similarly comfortable material will be used to separate and protect the internal components from the wearers skin (not shown). [0009] Fig. 2 shows the exploded view of such an Ambulatory Calf Compressor Device without the battery, electrical wires, switch and control circuit. [0010] Referring to Fig. 1 and 2 it can be seen that the Ambulatory Calf Compressor Device comprises of one or more thin silicone rubber sheets 1 with two brass bars 2 embedded in it in a parallel fashion. The brass bars are attached to the silicone rubber sheet via silicone nipples, which are formed during the moulding process. Between each brass bar there are numerous thin and very strong BioMetal filaments 3 which connect the brass bars together in an electrical circuit. The brass bars are affixed to the BioMetal filaments via eyelets 4. Each brass bar 2 is also attached to a negative and positive electrical wire 5, 6 which in turn is attached to a rechargeable Li-Polymer or Li Ion battery 7 and an electrical switch 8, which is used to activate the device. A simple integrated circuit board or programmable interface 9 controls the pulses of electricity from the battery 7 which regulates the contractive forces of the device.
Claims (18)
1. A device including: electrical energy source means including a positive and a negative terminal and circuit means to selectively apply an electrical voltage of non-zero value across the terminals, the electrical energy source means being portable; sheet material means adapted to be wrapped about a human calf; at least one pair of spaced apart electrical conductors attached to or within the sheet material means; electrically conductive means connecting respective terminals and conductors; at least one filament of SMA electrically connected between the conductors and attached to or within the sheet material means; and the device being adapted, when wrapped about the human calf and when the electrical voltage is applied, to apply a compressive force to the calf.
2. A device according to claim 1, wherein the conductors are of generally straight configuration and the conductors of each pair are generally parallel to one another.
3. A device according to claim 1 or claim 2, wherein the conductors are formed at least substantially of brass.
4. A device according to any one of the preceding claims, wherein the sheet material means includes a sheet of silicon rubber.
5. A device according to any one of the preceding claims, wherein the sheet material means includes a cover suitable for contact with the skin of the subject.
6. A device according to claim 5, wherein the cover is an electrical insulator and the cover encapsulates the conductors and filament.
7. A device according to claim 6, wherein the cover is formed at least substantially of nylon.
8. A device according to any one of the preceding claims, wherein the electrical energy source means is a battery.
9. A device according to claim 8, wherein the battery is rechargeable.
10. A device according to claim 8, wherein the battery is a Li Polymer battery. -4
11. A device according to claim 8, wherein the battery is a Li ion battery.
12. A device according to any one of the preceding claims, wherein the circuit means is adapted to apply the electrical voltage across the terminals for a period of time wherein the compressive force is applied for a corresponding period of time.
13. A device according to any one of claims 1 to 11, wherein the circuit means is adapted to repeatedly apply the electrical voltage across the terminals for a period of time with a subsequent period of no electrical voltage across the terminals, wherein the compressive force is applied in corresponding intervals.
14. A device according to any one of the preceding claims, wherein the circuit means is adapted to control the applied electrical voltage by selection and adjustment of the value of the voltage, thereby controlling the intensity of the applied compressive force.
15. A device according to any one of the preceding claims, wherein the circuit means is pre programmed.
16. A device according to any one of claims 1 to 14, wherein the circuit means includes an interface for allowing a user to specify the selective application of the electrical voltage.
17. A device according to any one of the preceding claims, wherein the electrical voltage is a DC voltage.
18. A device substantially as herein described with reference to any one of the embodiments of the invention illustrated in the accompanying drawings and/or examples.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2005237123A AU2005237123B2 (en) | 2004-12-01 | 2005-11-24 | Ambulatory calf compressor device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2004906834 | 2004-12-01 | ||
| AU2004906834A AU2004906834A0 (en) | 2004-12-01 | Ambulatory calf compressor device | |
| AU2005237123A AU2005237123B2 (en) | 2004-12-01 | 2005-11-24 | Ambulatory calf compressor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2005237123A1 AU2005237123A1 (en) | 2006-06-15 |
| AU2005237123B2 true AU2005237123B2 (en) | 2012-07-05 |
Family
ID=36616563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2005237123A Ceased AU2005237123B2 (en) | 2004-12-01 | 2005-11-24 | Ambulatory calf compressor device |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2005237123B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005304960A (en) * | 2004-04-23 | 2005-11-04 | Matsushita Electric Works Ltd | Massage machine |
-
2005
- 2005-11-24 AU AU2005237123A patent/AU2005237123B2/en not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005304960A (en) * | 2004-04-23 | 2005-11-04 | Matsushita Electric Works Ltd | Massage machine |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2005237123A1 (en) | 2006-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period | ||
| NB | Applications allowed - extensions of time section 223(2) |
Free format text: THE TIME IN WHICH TO REQUEST EXAMINATION HAS BEEN EXTENDED TO 17 DEC 2009. |
|
| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |