Source: http://www.google.com/patents/USRE40669?dq=7,190,101
Timestamp: 2016-05-30 03:20:07
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Patent USRE40669 - Blood pump - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA pump especially designed for pumping blood comprises a bladder, the interior surface area and volume of which is changeable, i.e., it stretches and expands during the filling phase, and elastically contracts to its normal relaxed size during the ejection phase. The bladder has a fluid inlet and a fluid...http://www.google.com/patents/USRE40669?utm_source=gb-gplus-sharePatent USRE40669 - Blood pumpAdvanced Patent SearchPublication numberUSRE40669 E1Publication typeGrantApplication numberUS 11/156,362Publication dateMar 17, 2009Filing dateJun 17, 2005Priority dateAug 13, 2001Fee statusPaidAlso published asCA2459543A1, DE60230876D1, EP1416877A2, EP1416877A4, EP1416877B1, US6579223, US20030032854, WO2003015841A2, WO2003015841A3Publication number11156362, 156362, US RE40669 E1, US RE40669E1, US-E1-RE40669, USRE40669 E1, USRE40669E1InventorsArthur PalmerOriginal AssigneeArthur PalmerExport CitationBiBTeX, EndNote, RefManPatent Citations (38), Non-Patent Citations (19), Referenced by (2), Classifications (9), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetBlood pump
US RE40669 E1Abstract
an elastic bladder, at least a portion of the interior surface area of said bladder being changeable between a contracted state have having a first surface area and an expanded state having a second surface area that is substantially greater than said first surface area, said bladder having a fluid inlet and a fluid outlet; means for causing substantially one-way fluid flow through said bladder; a housing around at least a portion of said bladder, an annular a volume being defined in the space between said housing and said bladder, said annular volume being occupied by a driving fluid; means for changing the pressure of said driving fluid in said annular volume to alternately expand and contract said bladder to change the interior surface area and volume of said bladder; and a driving fluid flow regulating means in said annular volume space between said bladder and said housing for expanding and contracting selected areas of said bladder adapted, in a filling phase, to expand a selected area of said bladder adjacent said inlet and thereafter progressively expand the remaining areas of said bladder towards said bladder outlet substantially in the direction of fluid flow, and during an ejection phase, to initially contract said bladder adjacent said bladder inlet and thereafter progressively contract the remaining areas of the bladder towards said bladder outlet said bladder substantially in the direction of fluid flow. 2. A fluid pump as in claim 1, wherein said actuating driving fluid is a gas and said pressure changing means comprises a vacuum pump.
(a) providing a blood pumping system having an extensible and contractible bladder, said pumping system having an inlet and a fluid outlet; (b) connecting the inlet and outlet of said pumping system to the human's circulatory system; (c) expanding a majority of the interior surface area of said pumping system by at least a few percent, including expanding the volume of the bladder to draw blood into the bladder through the inlet; (d) contracting a majority of the interior surface area of said blood pumping system by at least a few percent, including contracting the volume of the bladder to pump blood out of the outlet of said system; and (e) rhythmically repeating steps (c) and (d). 12. A fluid pump comprising:
a bladder, at least a portion of the interior surface area of said bladder being changeable, said bladder having a fluid inlet and a fluid outlet, said bladder having thickness variations for controlling the expansion and contraction of said bladder, said bladder have having a thinner wall thickness at said inlet and a thicker wall thickness at said outlet; means for alternately expanding and contracting said bladder to change the interior surface area and volume of said bladder; and means for causing substantially one-way fluid flow through said bladder. 13. A fluid pump comprising:
a housing; an extensible and contractible bladder in said housing, a space defined between said housing and said bladder for receiving a bladder driving fluid, said bladder having an inlet and an outlet; a check valve to at least one of said bladder inlet and outlet; means for altering the pressure of the driving fluid to alternately expand and contract the interior surface area and volume of said bladder to define a pumping cycle, most of said interior surface area of said bladder adapted to expand and contract with each said pumping cycle; and a driving fluid pressure regulator in said space to selectively control the rate of expansion or contraction of selected areas of said bladder. 16. A fluid pump as in claim 15 for pumping blood, wherein said bladder is has a curved configuration representative of a natural heart with said inlet being adjacent said outlet.
a bladder, at least a portion of the interior surface area of said bladder being changeable, said bladder having a fluid inlet and a fluid outlet; means for alternately expanding and contracting the bladder to change the interior surface area and volume of said bladder between a contracted state having a first surface area and an expanded state having a second surface area that is substantially greater than said first surface area; means for causing substantially one-way fluid flow through said bladder; and wherein said changeable portion of said bladder is comprised of a plurality of different materials to control the rate of expansion or contraction of selected areas of said bladder. Description
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SHERIFImplantable artificial ventricle having low energy requirementUS20100298932 *Aug 28, 2009Nov 25, 2010Sherif Hisham M FImplantable artificial ventricle having low energy requirement* Cited by examinerClassifications U.S. Classification600/16, 623/3.1International ClassificationA61M1/10, A61M1/12, A61F2/00Cooperative ClassificationA61M1/1062, A61M1/1037, A61M1/122European ClassificationA61M1/10ELegal EventsDateCodeEventDescriptionDec 17, 2010FPAYFee paymentYear of fee payment: 8Dec 17, 2014FPAYFee paymentYear of fee payment: 12RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services