CA2973176C - Tamper proof battery enclosure - Google Patents

Tamper proof battery enclosure Download PDF

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Publication number
CA2973176C
CA2973176C CA2973176A CA2973176A CA2973176C CA 2973176 C CA2973176 C CA 2973176C CA 2973176 A CA2973176 A CA 2973176A CA 2973176 A CA2973176 A CA 2973176A CA 2973176 C CA2973176 C CA 2973176C
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CA
Canada
Prior art keywords
cover
casing
clip
portions
aperture
Prior art date
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Active
Application number
CA2973176A
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French (fr)
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CA2973176A1 (en
Inventor
Jonathan Fenton
Ali Ersan
Martin Gordon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sky Medical Technology Ltd
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Sky Medical Technology Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sky Medical Technology Ltd filed Critical Sky Medical Technology Ltd
Publication of CA2973176A1 publication Critical patent/CA2973176A1/en
Application granted granted Critical
Publication of CA2973176C publication Critical patent/CA2973176C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/04—Electrodes
    • A61N1/0404—Electrodes for external use
    • A61N1/0408—Use-related aspects
    • A61N1/0452—Specially adapted for transcutaneous muscle stimulation [TMS]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/04—Electrodes
    • A61N1/0404—Electrodes for external use
    • A61N1/0472—Structure-related aspects
    • A61N1/0492—Patch electrodes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/36003—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of motor muscles, e.g. for walking assistance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/36014—External stimulators, e.g. with patch electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/216—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for button or coin cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Electrotherapy Devices (AREA)
  • Battery Mounting, Suspending (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

A neuromuscular stimulator device is described having a plastic casing housing control electronics which are maintained in contact with a power source by a metal retaining clip. The casing includes an integral cover which may be opened by breaking lines of weakness formed in the cover. The cover and clip are of such relative sizes and shapes so that once the cover is open, the clip may only be removed from the casing by deforming the clip. This deformation will ensure that the clip and other components cannot be replaced back in the casing, such that the device cannot easily be reused. In addition, the cover is not replaceable, due to the broken portions of the casing.

Description

TAMPER PROOF BATTERY ENCLOSURE
FIELD OF THE INVENTION
The present invention relates to a tamper proof battery enclosure for incorporation into an electronic device. Aspects of the invention relate to an electronic device including such an enclosure. In particular, the enclosure is useful in disposable medical devices, for example an electronic neurostimulator device.
BACKGROUND TO THE INVENTION
Low cost, disposable electronic devices are used in many fields, including the medical device field. The present applicants have previously described an electronic neurostimulator device, in international patent application W02010/070332. The device described therein incorporates a control unit housing the necessary electronics to drive the device, and to allow a user to operate the device; these typically include a PCB and an electrical cell. A pair of electrodes driven by the control unit are printed onto a flexible electrically insulative substrate.
The substrate is mounted onto a more robust elongate tongue made from, for example, a flexible plastics material.
It is desirable for disposable single use or short term use electronic devices to be, firstly, tamper proof, to prevent unauthorised access or modification to the electronics, and, secondly, readily disabled prior to disposal, again to prevent unauthorised reuse. Indeed, .. such requirements may be imposed as part of the regulatory procedure for medical devices.
It is among the objects of embodiments of the present invention to provide such properties to a device.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention, there is provided an electronic device comprising:
a plastic casing defining an interior and an exterior, the interior defining a cavity housing a printed circuit board (PCB), an electrical cell, and a metal retaining clip for retaining said electrical cell in electrical contact with the PCB, the casing including an integral cover which permits access to the interior of the casing;
wherein the integral cover is formed as part of the casing, and the cover is a portion of the casing, and the casing includes portions which are configured to be weaker relative to the cover, said portions joining the cover to the remainder of the casing, such that said portions may be broken by the application of sufficient force, to allow at least a part of the cover to be separated from the remainder of the casing, thereby creating an aperture permitting access to the interior of the casing;
Date recu/Date Received 2020-04-20
2 and wherein the retaining clip separates the electrical cell from the cover, and the clip and cover are of suitable relative size and shape so as to cause the clip to be deformed on application of sufficient force to remove the clip through the aperture created on separation of the cover.
Thus, the device is so arranged such that the aperture is smaller than the clip, and the clip will be deformed when removed from the casing; this deformation will ensure that the clip and other components cannot be replaced back in the casing, such that the device cannot easily be reused. In addition, the cover is not replaceable, due to the broken portions of the casing.
Preferably the cover comprises a flange at a first location, to allow a user to apply force at said location in order to break said portions of relative weakness. The flange may act as a fulcrum for a lever, allowing the cover to be removed using a suitable tool (for example, a screwdriver or similar).
Preferably the cover is joined to the remainder of the casing along a first side by said portions of relative weakness, and along a second side by a further weaker portion which said further portion forms a hinge when the weaker portions along the first side are broken. When the cover comprises a flange, the flange may be located along said first side of the cover.
Preferably the hinge portion is arranged to break on application of additional force to the cover; this serves to further place the device beyond use.
Preferably the clip is sized to extend across said aperture and includes a first portion extending beyond said aperture within the interior of the casing such that said first clip portion cannot be removed from the interior through the aperture without deformation of the first clip portion. Thus, the clip is essentially too large to pass through the aperture unless it is deformed so that it cannot be used again.
Preferably the clip is non-resilient, such that upon deformation the clip does not revert to the original shape.
Preferably the electrical cell is sized to extend across said aperture and beyond said aperture on a first side. Preferably said first side of the cell is adjacent said hinge side of the cover.
This arrangement allows the cell to act as a pivot whereby the hinge may be caused to break when the cell (and optionally the PCB) are removed from the casing. In certain embodiments, the PCB may be located adjacent the cover, such that breakage of the portions of relative weakness and separation of the at least part of the cover also serves to displace the PCB
with respect to the cell and clip to thereby damage at least one of the PCB
and/or clip.
The device preferably further comprises a flexible electrically insulative substrate on which is carried a pair of electrodes connected to the PCB by an electrically conductive pathway.
Preferably the casing is substantially sealed against moisture ingress.
Preferably the casing is injection moulded.
The device is preferably a medical device, more preferably an electrical neuromuscular stimulator.
Date recu/Date Received 2020-04-20
3 The device may further comprise a flexible electrically insulative substrate on which is carried an electrically conductive pathway, the pathway being in electrical contact with the PCB;
wherein the substrate is located adjacent the cover, such that breakage of the portions of relative weakness also serves to damage the substrate, such that the electrically conductive pathway is interrupted. This feature may also form a separate embodiment.
In an alternative embodiment, there is provided an electronic device comprising:
a plastic casing defining an interior and an exterior, the interior defining a cavity housing a printed circuit board (PCB), an electrical cell, and a metal retaining clip for retaining said electrical cell in electrical contact with the PCB, the casing including an integral cover which permits access to the interior of the casing; and a flexible electrically insulative substrate on which is carried an electrically conductive pathway, the pathway being in electrical contact with the PCB;
wherein the integral cover is formed as part of the casing, and the cover is a portion of the casing, and the casing includes portions which are configured to be weaker relative to .. the cover, said portions joining the cover to the remainder of the casing, such that said portions may be broken by the application of sufficient force, to allow at least a part of the cover to be separated from the remainder of the casing, thereby creating an aperture permitting access to the interior of the casing;
wherein the substrate is located adjacent the cover, such that breakage of the portions which are configured to be weaker relative to the cover also serves to damage the substrate, such that the electrically conductive pathway is interrupted.
Date recu/Date Received 2020-04-20
4 BRIEF DESCRIPTION OF THE FIGURES
Figure 1 shows an electronic neuromuscular stimulation device, taken from W02010/070332.
Figure 2 shows a section of a casing for an electronic neuromuscular stimulation device, incorporating a tamper proof battery enclosure in accordance with a first embodiment of the present invention.
Figure 3 shows the casing of Figure 2, after it has been opened for disposal.
Figure 4 shows a top view of the casing of Figure 2.
Figure 5 shows a section of a casing incorporating a tamper proof battery enclosure in accordance with a second embodiment of the present invention.
Figure 6 shows the casing of Figure 5, after it has been opened for disposal.
Figures 7 and 8 show external views of an alternative device.
DETAILED DESCRIPTION OF THE INVENTION
Shown in Figure 1 is a neuromuscular stimulator device 10 as described in W02010/070332. The device comprises a flexible, non-stretchable thermoplastic elastomer substrate 12 which includes an elongate tongue 14 at one end, and a moulded recess 16 at the other.
On the tongue 14 are printed positive 18 and negative 20 electrodes. The positive is slightly larger than the negative. Each electrode includes a conductive track 22, 24 leading from the electrode to a respective contact point 26, 28 located in the recess 16.
Not shown in the figures are an insulative strip arranged between the positive track 22 and the negative electrode 20, and similar strips at the edges of the tongue, to prevent unwanted leakage of current.
Within the recess 16 are placed an electrical cell (not shown), and a PCB (not shown) including suitable circuitry to control the electrodes. Together with the conductive tracks 22, 24 and contact points 26, 28, this forms a complete circuit. A plastic cover is then sonically welded over the recess 16 to seal the components. A layer of gel is then placed over the
5 whole device 10; this provides an electrical contact with a user's limb and helps keep the device adhered to a user. The gel may be protected in transit by a peelable backing layer.
The outer surface of the recess 16 is formed with an integral diaphragm button 30 and an aperture 32 for displaying an LED. The button 30 is arranged to contact a corresponding button on the battery housing or PCB to activate the device. The aperture 32 displays an LED
which indicates whether the device is operating.
An alternative device is shown in external view in Figures 7 and 8. This is generally similar in operation to the device shown in Figure 1, but has a slightly different configuration, in that the recess / enclosure is located towards the centre of the flexible tongue. A
view of the device from the lower surface is shown in Figure 8; in particular the cover of the casing can be seen here.
Figure 2 shows a sectional view of a casing of the device of Figures 7 and 8 (corresponding generally to the recess 16 of the device shown in Figure 1) incorporating a tamper proof enclosure in accordance with a first embodiment of the present invention. The casing 40 includes upper 42 and lower 44 portions ultrasonically welded together to form a sealed unit.
An enclosure is formed within the casing, within which are located a PCB 46, an electrical cell 48, and a metal clip 50. Extending above the PCB 46 is a flexible insulative substrate 60 which extends beyond the casing 40 via a path formed from the upper and lower casing portions. The substrate 60 carries electrically conducting paths in contact with the PCB, leading to electrodes outside the casing for placing in contact with a user to electrically stimulate their muscles.
On the lower portion 44 of the casing 40 is formed a cover 52, which is defined by a thinner portion 54 extending around the cover 52, joining it to the rest of the casing. As can be seen in Figure 4 (a top view of the casing 40), the thinner portion 54 extends around the cover 52 and incorporates a flange 56 at one side. As also apparent from Figure 4, the clip 50 is sized so as to extend across the whole width of the cover and beyond, into the enclosure formedby the casing. At the side of the cover forming a flange, the clip 50 also extends upwards along the side of the cell 48.
The device incorporating the casing 40 is intended to be a disposable, single use (or few uses) device. After use, the cell 48 (and other electrical components) may be removed for recycling or disposal, and the device rendered inoperative.
Date recu/Date Received 2020-04-20
6 In order to remove the cell 48, a user may insert a tool 58 (for example, a screwdriver) under the flange 56 and lever the cover 52 open. The thinner portion 54 of the casing will break, and the opposite side from the flange acts as a hinge (Figure 3). The cell 48 and clip 50 may then be levered out of the casing 40. As the aperture formed by the opening of the cover 52 is somewhat narrower than the cell 48 and the clip 50, the clip (and in particular the portion of the clip extending upwards alongside the cell 48) will be deformed upon removal, rendering it inoperative to electrically connect the cell to the PCB. Further, the cell 48 may also be arranged so as to act to completely separate the cover 52 from the remainder of the casing 40. Thus, the cell, clip, and PCB may be removed from the casing and recycled, while the casing and clip are damaged such that they cannot be reassembled and reused.
An alternative embodiment is shown in Figures 5 and 6. In this embodiment, the substrate 60 is arranged so as to be adjacent the cover 52, with the PCB 46 and cell 48 being arranged in electrical contact with the substrate 60. The clip 50 in this embodiment is somewhat different, in that it is not deformed on opening of the cover and removal. Instead, when a user opens the cover 52 to remove the cell and PCB, this causes the substrate 60 to be damaged or broken, thereby interrupting the electrical connection between the PCB and the electrodes, and rendering the device inoperable. In addition, in this embodiment the PCB
is located adjacent the cover, such that breakage of the portions of relative weakness and separation of the at least part of the cover also serves to displace the PCB
with respect to the cell and clip to thereby damage at least one of the PCB and/or clip.
This embodiment may be combined with the first embodiment, such that a tamper proof enclosure incorporates both means of rendering the device inoperative.

Claims (26)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. An electronic device comprising:
a plastic casing defining an interior and an exterior, the interior defining a cavity housing a printed circuit board (PCB), an electrical cell, and a metal retaining clip for retaining said electrical cell in electrical contact with the PCB, the casing including an integral cover which permits access to the interior of the casing;
wherein the integral cover is formed as part of the casing, and the cover is a portion of the casing, and the casing includes portions which are configured to be weaker relative to the cover, said portions joining the cover to the remainder of the casing, such that said portions may be broken by the application of sufficient force, to allow at least a part of the cover to be separated from the remainder of the casing, thereby creating an aperture permitting access to the interior of the casing;
and wherein the retaining clip separates the electrical cell from the cover, and the clip and cover are of suitable relative size and shape so as to cause the clip to be deformed on application of sufficient force to remove the clip through the aperture created on separation of the cover.
2. The device of claim 1, wherein the cover comprises a flange at a first location, to allow a user to apply force at said location in order to break said portions which are configured to be weaker relative to the cover.
3. The device of claim 1 or claim 2, wherein the cover is joined to the remainder of the casing along a first side by said portions which are configured to be weaker relative to the cover, and along a second side by a further portion which is configured to be weaker relative to the cover which said further portion forms a hinge when the portions along the first side are broken.
4. The device of claim 3, when dependent on claim 2, wherein said flange is located along said first side of the cover.
Date recu/Date Received 2020-04-20
5. The device of claim 3 or 4, wherein the clip is sized to extend across said aperture and includes a first portion extending beyond said aperture within the interior of the casing such that said first clip portion cannot be removed from the interior through the aperture without deformation of the first clip portion.
6. The device of claim 3, 4 or 5, wherein said hinge portion is arranged to break on application of additional force to the cover.
7. The device of any one of claims 1 to 6, wherein said clip is non-resilient, such that upon deformation the clip does not revert to the original shape.
8. The device of any one of claims 1 to 7, wherein the electrical cell is sized to extend across said aperture and beyond said aperture on a first side.
9. The device of any one of claims 4 to 8, when dependent on claim 3, wherein said first side of the cell is adjacent said hinge side of the cover.
10. The device of any one of claims 1 to 9, further comprising a flexible electrically insulative substrate on which is carried a pair of electrodes connected to the PCB by an electrically conductive pathway.
11. The device of any one of claims 1 to 10, wherein the casing is sealed against moisture ingress.
12. The device of any one of claims 1 to 11, wherein the casing is injection moulded.
13. The device of any one of claims 1 to 12, which is a medical device.
14. The device of claim 13, wherein the medical device is an electrical neuromuscular stimulator.
Date recu/Date Received 2020-04-20
15. The device of any one of claims 1 to 14, further comprising a flexible electrically insulative substrate on which is carried an electrically conductive pathway, the pathway being in electrical contact with the PCB;
wherein the substrate is located adjacent the cover, such that breakage of the portions which are configured to be weaker relative to the cover also serves to damage the substrate, such that the electrically conductive pathway is interrupted.
16. An electronic device comprising:
a plastic casing defining an interior and an exterior, the interior defining a cavity housing a printed circuit board (PCB), an electrical cell, and a metal retaining clip for retaining said electrical cell in electrical contact with the PCB, the casing including an integral cover which permits access to the interior of the casing; and a flexible electrically insulative substrate on which is carried an electrically conductive pathway, the pathway being in electrical contact with the PCB;
wherein the integral cover is formed as part of the casing, and the cover is a portion of the casing, and the casing includes portions which are configured to be weaker relative to the cover, said portions joining the cover to the remainder of the casing, such that said portions may be broken by the application of sufficient force, to allow at least a part of the cover to be separated from the remainder of the casing, thereby creating an aperture permitting access to the interior of the casing;
wherein the substrate is located adjacent the cover, such that breakage of the portions which are configured to be weaker relative to the cover also serves to damage the substrate, such that the electrically conductive pathway is interrupted.
17. The device of any one of claims 1 to 16, wherein the cover comprises a flange at a first location, to allow a user to apply force at said location in order to break said portions which are configured to be weaker relative to the cover.
18. The device of claim 16 or claim 17, wherein the cover is joined to the remainder of the casing along a first side by said portions which are configured to be weaker relative to the cover, and along a second side by a further portion which is configured to be weaker relative to the cover which said further portion forms a hinge when the portions along the first side are broken.
Date recu/Date Received 2020-04-20
19. The device of claim 18, when dependent on claim 17, wherein said flange is located along said first side of the cover.
20. The device of claim 18 or 19, wherein said hinge portion is arranged to break on application of additional force to the cover.
21. The device of any one of claims 16 to 20, wherein the electrical cell is sized to extend across said aperture and beyond said aperture on a first side.
22. The device of any one of claims 16 to 21 wherein the flexible electrically insulative substrate further carries a pair of electrodes connected to the electrically conductive pathway.
23. The device of any one of claims 16 to 22, wherein the casing is sealed against moisture ingress.
24. The device of any one of claims 16 to 23, wherein the casing is injection moulded.
25. The device of any one of claims 16 to 24, which is a medical device.
26. The device of claim 25, wherein the medical device is an electrical neuromuscular stimulator.
Date recu/Date Received 2020-04-20
CA2973176A 2015-01-07 2016-01-07 Tamper proof battery enclosure Active CA2973176C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1500164.7 2015-01-07
GB201500164 2015-01-07
PCT/GB2016/050033 WO2016110706A1 (en) 2015-01-07 2016-01-07 Tamper proof battery enclosure

Publications (2)

Publication Number Publication Date
CA2973176A1 CA2973176A1 (en) 2016-07-14
CA2973176C true CA2973176C (en) 2021-07-06

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CA2973176A Active CA2973176C (en) 2015-01-07 2016-01-07 Tamper proof battery enclosure

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US (1) US10367178B2 (en)
EP (1) EP3243230B1 (en)
CN (1) CN107431156B (en)
CA (1) CA2973176C (en)
ES (1) ES2789329T3 (en)
WO (1) WO2016110706A1 (en)

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US10367178B2 (en) 2019-07-30
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CA2973176A1 (en) 2016-07-14
EP3243230A1 (en) 2017-11-15
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WO2016110706A1 (en) 2016-07-14
ES2789329T3 (en) 2020-10-26

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