GB1413801A - Blood pumping - Google Patents

Blood pumping

Info

Publication number
GB1413801A
GB1413801A GB3829372A GB3829372A GB1413801A GB 1413801 A GB1413801 A GB 1413801A GB 3829372 A GB3829372 A GB 3829372A GB 3829372 A GB3829372 A GB 3829372A GB 1413801 A GB1413801 A GB 1413801A
Authority
GB
United Kingdom
Prior art keywords
envelope
valve
diaphragm
sleeve
inlet
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.)
Expired
Application number
GB3829372A
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.)
Bentley Laboratories Inc
Original Assignee
Bentley Laboratories 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 Bentley Laboratories Inc filed Critical Bentley Laboratories Inc
Publication of GB1413801A publication Critical patent/GB1413801A/en
Expired 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/20—Type thereof
    • A61M60/247—Positive displacement blood pumps
    • A61M60/253—Positive displacement blood pumps including a displacement member directly acting on the blood
    • A61M60/268—Positive displacement blood pumps including a displacement member directly acting on the blood the displacement member being flexible, e.g. membranes, diaphragms or bladders
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/104—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body
    • A61M60/109—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body incorporated within extracorporeal blood circuits or systems
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/40—Details relating to driving
    • A61M60/424—Details relating to driving for positive displacement blood pumps
    • A61M60/427—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being hydraulic or pneumatic
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/50—Details relating to control
    • A61M60/508—Electronic control means, e.g. for feedback regulation
    • A61M60/562—Electronic control means, e.g. for feedback regulation for making blood flow pulsatile in blood pumps that do not intrinsically create pulsatile flow
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/845—Constructional details other than related to driving of extracorporeal blood pumps
    • A61M60/851—Valves
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/20—Type thereof
    • A61M60/247—Positive displacement blood pumps
    • A61M60/253—Positive displacement blood pumps including a displacement member directly acting on the blood
    • A61M60/268—Positive displacement blood pumps including a displacement member directly acting on the blood the displacement member being flexible, e.g. membranes, diaphragms or bladders
    • A61M60/279—Peristaltic pumps, e.g. roller pumps
    • A61M60/284—Linear peristaltic pumps
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
    • A61M60/89—Valves
    • A61M60/894—Passive valves, i.e. valves actuated by the blood
    • A61M60/896—Passive valves, i.e. valves actuated by the blood having flexible or resilient parts, e.g. flap valves

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • Anesthesiology (AREA)
  • Cardiology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)
  • Reciprocating Pumps (AREA)

Abstract

1413801 Extracorporeal blood pumps BENTLEY LABORATORIES INC 16 Aug 1972 [16 Aug 1971] 38293/72 Heading A5R [Also in Division F1]. A pump for extracorporeal blood pumping comprises a disposable flexible envelope 20, Fig. 1, e.g. of polyurethane, with inlet and outlet lip valves 42, 41, and a diaphragm 33 which is reciprocated by a pneumatic or hydraulic actuator 16 to compress the envelope 20 to discharge its contents and to release the envelope to permit refilling by venous blood under its own pressure. The initiation of the discharge stroke is controlled either by a sensor 89 detecting filling of the envelope 20, or by a timer. The pump also may be controlled by the R wave of the patient's ECG waveform. The upper limit of the discharge stroke is determined by closure of an aperture 75 by a projection 77, thereby creating back pressure in an air tube 73 to provide a signal in a pneumatic circuit for reversing actuator 16. The diaphragm stroke is adjusted by rotating a sleeve 56 by a gear train, Fig. 3 (not shown), sleeve 56 being threaded on a sleeve 50 fixed to actuating shaft 43, and having a stop 57 engaging an O-ring 59 at the end of the downward stroke. The diaphragm may be manually actuated by mounting a crank assembly in bushes 78, 79 and engaging an eccentric in recess 83. The envelope and valve assembly is held in place by a cover 29 secured by a releasable clamp, Fig 2 (not shown). The envelope 20 comprises a tube 105, Fig. 4, clamped at each end to inlet and outlet valve assemblies 101, 106 each comprising a lip valve 103, 108, e.g. moulded from silicone rubber, the valve being provided with a slit by cutting first in an axial direction and then intersecting the first cut by a transverse cut, thereby forming clean, sharp edges on the valving surfaces 152. The inlet and outlet fittings 100, 110 and the valves are of substantially constant flow cross-sectional area. The valve width is several times greater than its height. The fittings 100, 110, e.g. of polycarbonate, each comprise a cylindrical portion 115 and a tapered portion 118, and are clamped to tube 105 by metal clamps 135, 136 and 172, 173.
GB3829372A 1971-08-16 1972-08-16 Blood pumping Expired GB1413801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17192471A 1971-08-16 1971-08-16

Publications (1)

Publication Number Publication Date
GB1413801A true GB1413801A (en) 1975-11-12

Family

ID=22625660

Family Applications (3)

Application Number Title Priority Date Filing Date
GB1525675A Expired GB1413803A (en) 1971-08-16 1972-08-16 Blood pumping
GB1524475A Expired GB1413802A (en) 1971-08-16 1972-08-16 Blood pumping
GB3829372A Expired GB1413801A (en) 1971-08-16 1972-08-16 Blood pumping

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB1525675A Expired GB1413803A (en) 1971-08-16 1972-08-16 Blood pumping
GB1524475A Expired GB1413802A (en) 1971-08-16 1972-08-16 Blood pumping

Country Status (5)

Country Link
JP (1) JPS4829300A (en)
DE (1) DE2240231A1 (en)
FR (1) FR2149464B1 (en)
GB (3) GB1413803A (en)
IT (1) IT965985B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2346418A (en) * 1998-12-17 2000-08-09 William Alfred Ireland Pump with duckbill-type valves

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113842A (en) * 1974-07-25 1976-02-03 Nippon Kogei Kogyo Co Kanjobutsuno naimentosohohooyobi sochi
US4158071A (en) * 1977-09-09 1979-06-12 The Continental Group, Inc. Method and apparatus for power coating of three-piece cans
JPS54161214U (en) * 1978-04-07 1979-11-10
US4411603A (en) * 1981-06-24 1983-10-25 Cordis Dow Corp. Diaphragm type blood pump for medical use
EP0199876A3 (en) * 1985-04-19 1987-05-20 Warner-Lambert Technologies, Inc. Valve system for medical and veterinary appliances

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2346418A (en) * 1998-12-17 2000-08-09 William Alfred Ireland Pump with duckbill-type valves
GB2346418B (en) * 1998-12-17 2002-11-13 William Alfred Ireland A pumping device

Also Published As

Publication number Publication date
FR2149464B1 (en) 1976-01-23
JPS4829300A (en) 1973-04-18
GB1413802A (en) 1975-11-12
FR2149464A1 (en) 1973-03-30
IT965985B (en) 1974-02-11
DE2240231A1 (en) 1973-03-01
GB1413803A (en) 1975-11-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees