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Title:
INDUCTION HEATING CIRCUIT FOR MEDICAL SHARPS REMOVAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/010019
Kind Code:
A4
Abstract:
Induction heating from an induction coil (108) is used to separate a metal medical sharp (144) from its holder (142) by applying a high-frequency oscillating magnetic field that excites eddy currents and resistance heating in the sharp. The heated metal sharp melts the adhesive or plastic securing the sharp to its holder. The use of induction heating is advantageous in that it does not require direct contact between the electrical circuit and the sharp or its holder. The heating can also act to sterilize the sharp and thereby render it less hazardous at the same time that it separates the sharp from its holder. The induction coil can have a stepped or conical shape to concentrate the RF energy at the interface between the metal sharp and its holder.

Inventors:
LIMAYE, Amit (163 Algonquin Trail, Wayne, New Jersey, 07470, US)
SCHIFF, David (213 Valentine Street, Highland Park, New Jersey, 08904, US)
ZIELINSKI, Todd (6300 Wissahickon Avenue, Philadelphia, Pennsylvania, 19144, US)
MCGILL, Nick (2801 Dogwood Lane, Broomall, Pennsylvania, 19008, US)
MORYS, Marian (835 Tremont Drive, Downingtown, Pennsylvania, 19335, US)
SMOLLINGER, Glenn (105 Wagon Wheel Road, Eagleville, Pennsylvania, 19403, US)
Application Number:
US2018/039039
Publication Date:
May 23, 2019
Filing Date:
June 22, 2018
Export Citation:
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Assignee:
BECTON, DICKINSON AND COMPANY (1 Becton Drive, Franklin Lakes, New Jersey, Jersey, US)
International Classes:
A61G12/00; A61M5/32; H05B1/02; H05B6/00; H05B6/02; H05B6/10
Attorney, Agent or Firm:
HOLMES, John et al. (DICKINSON WRIGHT PLLC, 1825 Eye Street NW,Suite 90, Washington District of Columbia, 20006, US)
Download PDF:
Claims:
AMENDED CLAIMS

received by the International Bureau on 04 April 2019 (04.04.2019)

Claims

1. An apparatus for removing a medical sharp from a holder , comprising: a magnetic induction coil; and a control circuit for energizing said magnetic induction coil; wherein said magnetic induction coil has a stepped shape defined by two axially spaced portions having different diameters, or a conical shape defined by a gradually changing diameter in the axial direction.

2. The apparatus according to claim 1, wherein the medical sharp comprises a metal pen needle cannula and the holder comprises a plastic pen needle hub.

3. The apparatus according to claim 1, wherein the control circuit energizes the coil at a frequency of about 27 MHz or about 43 MHz.

4. The apparatus according to claim 1, wherein the control circuit includes a micro controller unit.

5. An apparatus for removing a medical sharp from a holder, comprising: a magnetic induction coil; and a control circuit for energizing said magnetic induction coil; wherein the control circuit energizes the magnetic induction coil at a frequency of about 27 MHz or about 43 MHz.

6. The apparatus according to claim 5, wherein the medical sharp comprises a metal pen needle cannula and the holder comprises a plastic pen needle hub.

7. The apparatus according to claim 5, wherein the control circuit includes a micro controller unit.

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8. An apparatus for removing a medical sharp from a holder, comprising: a magnetic induction coil; and a control circuit for energizing said coil; wherein the control circuit energizes the magnetic induction coil at a voltage and/or frequency that is at least partly dependent on the size or gauge of said medical sharp.

9. The apparatus according to claim 8, wherein the medical sharp comprises a metal pen needle cannula and the holder comprises a plastic pen needle hub.

10. The apparatus according to claim 8, wherein the control circuit includes a micro controller unit.

11. An apparatus for removing a medical sharp from a holder, comprising: a magnetic induction coil; a control circuit for energizing the magnetic induction coil; a housing for enclosing the magnetic induction coil and the control circuit; a moveable door for providing access to the housing; and a sensor coupled to the control circuit for detecting an open or closed state of the moveable door.

12. The apparatus according to claim 11, wherein the medical sharp comprises a metal pen needle cannula and the holder comprises a plastic pen needle hub.

13. The apparatus according to claim 11, wherein the control circuit energizes the coil at a frequency of about 27 MHz or about 43 MHz.

14. The apparatus according to claim 11, wherein the control circuit includes a micro controller unit.

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15. An apparatus for removing a medical sharp from a holder, comprising: a magnetic induction coil; a control circuit for energizing the magnetic induction coil at an RF frequency; a housing for enclosing the magnetic induction coil and the control circuit; a moveable door for providing access to the housing; and a metallic shield on the moveable door for reducing RF emissions from said housing.

16. The apparatus according to claim 15, wherein the medical sharp comprises a metal pen needle cannula and the holder comprises a plastic pen needle hub.

17. The apparatus according to claim 15, wherein the RF frequency is about 27 MHz or about 43 MHz.

18. The apparatus according to claim 15, wherein the control circuit includes a micro controller unit.

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