CA2422975A1 - Infusion pump with access regulator - Google Patents

Infusion pump with access regulator Download PDF

Info

Publication number
CA2422975A1
CA2422975A1 CA002422975A CA2422975A CA2422975A1 CA 2422975 A1 CA2422975 A1 CA 2422975A1 CA 002422975 A CA002422975 A CA 002422975A CA 2422975 A CA2422975 A CA 2422975A CA 2422975 A1 CA2422975 A1 CA 2422975A1
Authority
CA
Canada
Prior art keywords
shield
access
magnetic
infusion pump
pump
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.)
Granted
Application number
CA002422975A
Other languages
French (fr)
Other versions
CA2422975C (en
Inventor
Alan J. Dextradeur
David Konieczynski
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.)
Codman and Shurtleff Inc
Original Assignee
Codman and Shurtleff Inc
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 Codman and Shurtleff Inc filed Critical Codman and Shurtleff Inc
Publication of CA2422975A1 publication Critical patent/CA2422975A1/en
Application granted granted Critical
Publication of CA2422975C publication Critical patent/CA2422975C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14276—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body specially adapted for implantation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/0208—Subcutaneous access sites for injecting or removing fluids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M2039/0036—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use characterised by a septum having particular features, e.g. having venting channels or being made from antimicrobial or self-lubricating elastomer
    • A61M2039/009—Means for limiting access to the septum, e.g. shields, grids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/35—Communication
    • A61M2205/3507—Communication with implanted devices, e.g. external control
    • A61M2205/3515—Communication with implanted devices, e.g. external control using magnetic means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/35—Communication
    • A61M2205/3507—Communication with implanted devices, e.g. external control
    • A61M2205/3523—Communication with implanted devices, e.g. external control using telemetric means

Abstract

An implantable infusion pump for infusing medicine into a patient has a reservoir for holding the medicine, an injection port for injecting medicine into the reservoir and a controllable shield for selectively blocking access to the injection port.

Claims (19)

1. An implantable infusion pump for infusing medication into a patient, the pump comprising a reservoir for containing the medication and an injection access port into the reservoir; and an openable and closable shield at the access port blocking access of an injection needle into the port when closed and allowing access of the injection needle into the port when open.
2. An implantable infusion pump according to claim 1 wherein the shield is adapted to move laterally with respect to the access port.
3. An implantable infusion pump according to claim 1 wherein the shield is adapted to move vertically with respect to the access port.
4. An implantable infusion pump according to claim 1 and further comprising:
a magnetic rotor within the pump coupled to the shield;
and a magnetic driver external of the pump;

wherein the driver is adapted to couple magnetically with the rotor whereby to turn the rotor and operate the shield.
5. An implantable infusion pump acceding to claim 4 wherein the rotor has a sequence of north and south magnetic poles and the driver has a complementary sequence of magnetic poles.
6. An implantable infusion pump according to claim 5 wherein the sequence of poles is irregular whereby to make unauthorized access to the pump more difficult.
7. An implantable infusion pump according to claim 5 wherein the poles on the driver are electromagnets.
8. An implantable infusion pump according to claim 1 and further comprising a controller in RF communication with a means for opening and closing the shield.
9. An implantable infusion pump according to claim 8 and further comprising a delay closing means for automatically closing the shield in a time period after opening.
10. A method for restricting access to a drug reservoir in an implanted infusion pump wherein the drug reservoir is accessible through an access port, the method comprising the steps of:
shielding the access port with a shield during a time when access to the reservoir is not to be allowed; and moving the shield to allow access to the port during a time when access to the reservoir is to be allowed.
11. A method according to claim 10 wherein the step of moving the shield comprises moving the shield laterally of the port to allow access to the reservoir.
12. A method according to claim 10 wherein the step of moving the shield comprises moving the shield inward of the port to allow a needle to enter the port.
13. A method according to claim 10 and further comprising the steps of:
coupling a magnetic driver, which is external to the pump and positioned outside of a patient's body in proximity to the pump, to a magnetic receiver within the pump;
applying a magnetic force to the magnetic receiver within the pump with the magnetic driver to thereby move the magnetic receiver;
by means of the movement of the magnetic receiver, moving the shield.
14. A method according to claim 13 wherein the magnetic receiver comprises a rotor having at least two opposite poles thereon, and wherein the method further comprises turning the rotor via the magnetic driver and translating rotation of the rotor into movement of the shield.
15. A method according to claim 14 wherein the rotor has a sequence of north and south magnetic poles and the driver has a complementary sequence of magnetic poles.
16. A method according to claim 15 wherein the sequence of poles is irregular whereby to make unauthorized access to the pump more difficult.
17. A method according to claim 15 wherein the poles on the driver are electromagnets and wherein the method comprises selectively energizing the electromagnets so as to move the rotor.
18. A method according to claim 10 further comprising the steps of sending an RF communication from a controller through the skin of a patient to instruct the shield to open.
19. A method according to claim 18 and further comprising the step of automatically closing the shield in a time period after opening the shield.
CA2422975A 2002-03-22 2003-03-20 Infusion pump with access regulator Expired - Lifetime CA2422975C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/104,784 2002-03-22
US10/104,784 US6805687B2 (en) 2002-03-22 2002-03-22 Infusion pump with access regulator

Publications (2)

Publication Number Publication Date
CA2422975A1 true CA2422975A1 (en) 2003-09-22
CA2422975C CA2422975C (en) 2010-06-15

Family

ID=27788397

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2422975A Expired - Lifetime CA2422975C (en) 2002-03-22 2003-03-20 Infusion pump with access regulator

Country Status (6)

Country Link
US (1) US6805687B2 (en)
EP (1) EP1346737B1 (en)
JP (1) JP4570845B2 (en)
AU (1) AU2003201373B2 (en)
CA (1) CA2422975C (en)
DE (1) DE60318761T2 (en)

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Also Published As

Publication number Publication date
EP1346737A1 (en) 2003-09-24
AU2003201373A1 (en) 2003-10-16
JP2003305128A (en) 2003-10-28
EP1346737B1 (en) 2008-01-23
CA2422975C (en) 2010-06-15
JP4570845B2 (en) 2010-10-27
US6805687B2 (en) 2004-10-19
AU2003201373B2 (en) 2007-04-05
DE60318761D1 (en) 2008-03-13
US20030181888A1 (en) 2003-09-25
DE60318761T2 (en) 2009-01-15

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