Helical Slide Patents (Class 417/477.4)
  • Patent number: 10294934
    Abstract: Devices, systems, and methods including a lubricating solution bath for a pump integrated into an ophthalmic surgical hand piece are provided. In some embodiments, an ophthalmic pump system includes a housing defining a cavity. The system includes a rotating element positioned within the cavity of the housing. The system includes a flexible tubular structure positioned within the housing adjacent to the rotating element such that rotation of the rotation element urges a fluid through the flexible tubular structure. The system includes a lubricating solution positioned within the cavity around the rotating element and at least a portion of the flexible tubular structure.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: May 21, 2019
    Assignee: Novartis AG
    Inventors: John Morgan Bourne, Glenn Robert Sussman
  • Patent number: 10260496
    Abstract: A conveying device at least for conveying a conveying medium includes at least one conveying space, with at least one conveying space element, which at least partly delimits the conveying space and is embodied in a rigid fashion, and with at least one elastically deformable conveying element which delimits the conveying space together with the conveying space element. The conveying space element includes at least one concave recess for at least partly forming the conveying space, wherein an inner surface of the conveying space element, which delimits the concave recess, forms a wall of the conveying space, wherein the conveying element comprises at least one conveying surface, which is utilizable in targeted fashion for a conveyance of a fluid in the conveying space and/or through the conveying space.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: April 16, 2019
    Assignee: Qonqave GmbH
    Inventor: Jan W. Beenker
  • Patent number: 9702355
    Abstract: Devices, systems, and methods including a lubricating solution bath for a pump integrated into an ophthalmic surgical hand piece are provided. In some embodiments, an ophthalmic pump system includes a housing defining a cavity. The system includes a rotating element positioned within the cavity of the housing. The system includes a flexible tubular structure positioned within the housing adjacent to the rotating element such that rotation of the rotation element urges a fluid through the flexible tubular structure. The system includes a lubricating solution positioned within the cavity around the rotating element and at least a portion of the flexible tubular structure.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: July 11, 2017
    Assignee: NOVARTIS AG
    Inventors: John Morgan Bourne, Glenn Robert Sussman
  • Patent number: 9057368
    Abstract: A rotary cam actuated linear peristaltic pump includes a plurality of cams which actuate a plurality of pistons. The cams apply a force to the piston by way of a lifter for providing mechanical advantage so that a smaller motor may be used to rotate the cam. Each piston of a plurality of pistons is sequentially raised to the extended position to squeeze a tube so as to flow fluid through the tube.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: June 16, 2015
    Inventor: Ahmad Momeni
  • Publication number: 20150125328
    Abstract: Devices, systems, and methods including a lubricating solution bath for a pump integrated into an ophthalmic surgical hand piece are provided. In some embodiments, an ophthalmic pump system includes a housing defining a cavity. The system includes a rotating element positioned within the cavity of the housing. The system includes a flexible tubular structure positioned within the housing adjacent to the rotating element such that rotation of the rotation element urges a fluid through the flexible tubular structure. The system includes a lubricating solution positioned within the cavity around the rotating element and at least a portion of the flexible tubular structure.
    Type: Application
    Filed: October 20, 2014
    Publication date: May 7, 2015
    Inventors: JOHN MORGAN BOURNE, GLENN ROBERT SUSSMAN
  • Patent number: 8043076
    Abstract: The invention relates to a method and to a device for operating an electric peristaltic hose pump, in particular a hose pump for transporting fluids in medical-technical devices, in particular extracorporeal blood treatment devices. In order to monitor the regular operation of a hose pump, the power consumption of the pump or a physical variable in correlation with the power consumption, in particular the pump flow, is monitored. The pump flow includes a periodically non-altering direct component which is superimposed on a periodically altering alternating component. In order to monitor the regular operation of the hose pump, the alternating component of the power consumption in relation to the direct component of the power consumption is monitored as whether it increases and/or decreases during blood treatment.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: October 25, 2011
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventor: Pascal Kopperschmidt
  • Publication number: 20110070111
    Abstract: A stator/rotor assembly includes at least one extruded preform bonded to a stator housing and/or a rotor mandrel. A method of constructing a stator/rotor assembly includes extruding at least one preform, and bonding the preform to a stator housing and/or a rotor mandrel. A method of constructing a stator includes applying multiple polymer strips to a bladder; and bonding the polymer strips to a stator housing while compressing the polymer strips between the bladder and the stator housing, without injection molding. A method of constructing a rotor includes applying multiple polymer strips to a rotor mandrel, and bonding the polymer strips to the rotor mandrel while compressing the polymer strips between a bladder and the rotor mandrel, without injection molding.
    Type: Application
    Filed: September 7, 2010
    Publication date: March 24, 2011
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Jeremy B. SLAY, John SNYDER, Victor GAWSKI, Winston J. WEBBER
  • Patent number: 6872058
    Abstract: A surface arrangement (30) adapted for use in a travelling volume pump. The pump (50) has a pumping chamber defined between first and second opposed pumping chamber surfaces (52, 54), which extend from an inlet to an outlet of the pump in a pumping direction (58). The surface arrangement (30) includes a plurality of flexible ridges (32) inclined in the pumping direction (58) and forming one or more of the first and second pumping chamber surfaces (52, 54). The ridges (32) span across the one or more pumping chamber surfaces (52, 54) in a direction generally transverse to the pumping direction (58) and have distal peaks (34) adapted to abut and substantially seal against the opposed second pumping chamber surface in the presence of a localised force displacing one of the first or second pumping chamber surfaces (52, 54) towards the other of the first or second pumping chamber surfaces (52, 54).
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: March 29, 2005
    Inventor: Ian D. Doig
  • Patent number: 6270326
    Abstract: The structural complexity of conventional transfusing devices is eliminated, and it is made possible to supply a minute amount of liquid medicine with high accuracy with a simple structure, whereby a portable transfusion pump is realized. A cylindrical rotary drive member (24) equipped with a rotation shaft (23) is arranged opposite to a support plate (22), and a liquid supply tube (16) is arranged between the support plate (22) and the rotary drive member (24). On the outer peripheral surface of the rotary drive member (24), a pressing protrusion (24a) extending spirally around the axis is formed integrally. A flexible sheet (25) is provided between the rotary drive member (24) and the liquid supply tube (16). The upper and lower ends of this sheet (25) are directly or indirectly fixed to a base (10) and the support plate (22).
    Type: Grant
    Filed: April 21, 1999
    Date of Patent: August 7, 2001
    Assignee: Seiko Epson Corporation
    Inventor: Hiroshi Kuriyama