[특허]Infusion pump system with disposable cartridge having pressure venting and pressure feedback

Tandem Diabetes Care, Inc.

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Infusion pump system with disposable cartridge having pressure venting and pressure feedback

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61M-005/142 A61M-005/14 A61M-005/315 F04B-053/14 F16J-015/32 F16J-015/56 A61M-005/168 G06F-003/0488
출원번호	US-0846720 (2010-07-29)
등록번호	US-9211377 (2015-12-15)
발명자 / 주소	DiPerna, Paul M. Brown, David Rosinko, Mike Kincade, Dan Michaud, Michael Nadworny, John Kruse, Geoffrey A. Ulrich, Thomas R.
출원인 / 주소	Tandem Diabetes Care, Inc.
대리인 / 주소	Patterson Thuente Pedersen, P.A.
인용정보	피인용 횟수 : 7 인용 특허 : 2368

초록

Embodiments are directed to portable infusion devices, systems, and methods of using the same for dispensing materials. In some cases, the devices, systems and methods may be used for infusing a material such as medicament, e.g., insulin, into a body in need thereof.

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1. A delivery mechanism for an infusion pump comprising: a bore disposed in a delivery mechanism body;a spool disposed in the bore which is axially displaceable within the bore; anda collapsible volume bounded by an outside surface of the spool, an inside surface of the bore, a first seal between the spool and the bore that is axially fixed relative to the spool but displaceable relative to an inside surface of the bore and a second seal between the spool and the inside surface of the bore which is configured to slide over a slide portion of the spool disposed in an aperture of the second seal, the second seal forming a substantially fluid tight but displaceable seal between an outside surface of the second seal and the inside surface of the bore and the second seal also forming a substantially fluid tight but displaceable seal between an outside surface of the slide portion and an inner surface of the second seal. 2. The mechanism of claim 1 wherein friction between the inside surface of the bore and the second seal is greater than friction between the outside surface of the slide portion of the spool and the aperture of the second seal. 3. The mechanism of claim 1 wherein the second seal comprises an o-ring. 4. The mechanism of claim 1 wherein the spool comprises an elongate cylindrical member having a transverse dimension of about 0.5 mm to about 10 mm. 5. The mechanism of claim 1, wherein at least one seal is always disposed between a reservoir inlet port and a dispense port so as to prevent a free flow condition to the dispense port from a reservoir. 6. An infusion pump for dispensing fluid to a patient, comprising: a disposable fluid cartridge including:a delivery mechanism including:a delivery mechanism body,a bore disposed in the delivery mechanism body including a distal end, a proximal end disposed towards a drive mechanism of the infusion pump, an interior volume, a reservoir inlet port, a fluid dispense port, a vent inlet port and a vent outlet port;a spool slidingly disposed within the bore which is axially displaceable in the bore and which includes:a collapsible first volume bounded by an outside surface of the spool, an inside surface of the bore, a first seal between the spool and the bore that is axially fixed relative to the spool but displaceable relative to an inside surface of the bore and a second seal between the spool and the inside surface of the bore which is configured to slide over a slide portion of the spool disposed in an aperture of the second seal, the second seal forming a substantially fluid tight but displaceable seal between an outside surface of the second seal and the inside surface of the bore and the second seal also forming a substantially fluid tight but displaceable seal between an outside surface of the slide portion and an inner surface of the second seal, anda vent second volume which is positionable to overlap the vent inlet port and vent outlet port simultaneously and which is formed by a third seal around the spool, a fourth seal around the spool, an outside surface of the spool between the third and fourth seal and an inside surface of the bore between the third and fourth seal;a collapsible fluid reservoir bounded by a flexible membrane and including an interior volume in fluid communication with the reservoir inlet port,a substantially rigid shell disposed about the collapsible fluid reservoir with an interior volume that contains the collapsible fluid reservoir and a vented volume disposed between an outer surface of the flexible membrane and an interior surface of the rigid shell, the vent inlet port being in fluid communication with the vented volume. 7. The infusion pump of claim 6 further comprising a drive mechanism operatively coupled to the spool of the delivery mechanism. 8. The infusion pump of claim 7 further comprising a user interface configured to accommodate user data input regarding fluid delivery. 9. The infusion pump of claim 8 further comprising a controller having a processor and memory device operatively coupled to the drive mechanism. 10. The infusion pump of claim 9 further comprising a power cell operatively coupled to the controller, the GUI and the drive mechanism. 11. The infusion pump of claim 6 wherein at least one seal is always disposed between the reservoir inlet port and the dispense port so as to prevent a free flow condition to the dispense port from the reservoir.

이 특허에 인용된 특허 (2368)

이 특허를 인용한 특허 피인용횟수: 7

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Infusion pump system with disposable cartridge having pressure venting and pressure feedback

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이 특허에 인용된 특허 (2368)

이 특허를 인용한 특허 피인용횟수: 7

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Infusion pump system with disposable cartridge having pressure venting and pressure feedback

초록

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이 특허에 인용된 특허 (2368)

이 특허를 인용한 특허 피인용횟수: 7

IPC 상위 출원인

상세정보조회

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IPC 상세정보(version : 201201)

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