Patents by Inventor Loren M. Lundtveit
Loren M. Lundtveit has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20200384177Abstract: A method of operating a disposable pumping unit includes enabling the disposable pumping unit to be loaded into a peritoneal dialysis hardware unit between a door and a housing of the hardware unit; structuring the disposable pumping unit to have a fluid pump receptacle, the fluid pump receptacle constructed and arranged to extend from both surfaces of the unit so as to fit within a first opening provided in the door and a second opening provided in the housing of the hardware unit; and enabling the disposable pumping unit to be guided into the hardware unit such that the fluid pump receptacle becomes aligned with the opposing first and second openings when the door is closed against the housing.Type: ApplicationFiled: August 24, 2020Publication date: December 10, 2020Inventors: Loren M. Lundtveit, Jose Alvaro, Joseph H. Bowman, Dan O'Sullivan, Stan Thompson
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Patent number: 10751457Abstract: An embodiment of a peritoneal dialysis system includes a peritoneal dialysis hardware unit having a housing with a first opening, a door coupled to the housing and having a second opening, and a solid pump piston having a solid piston shaft attached to or integrally formed with a solid piston head. The system also includes a stepper motor operable to cause the solid pump piston to translate; a disposable pumping unit having a first and a second opposing surface, and a fluid pump receptacle extending from the first and second surface to fit within the second opening. The hardware unit and pumping unit are structured and arranged to allow the pumping unit to be placed into the hardware unit such that the fluid pump receptacle is aligned with the first opening, the second opening, and the solid piston head when the door is closed against the housing.Type: GrantFiled: March 22, 2018Date of Patent: August 25, 2020Assignees: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE SAInventors: Loren M. Lundtveit, Jose Alvaro, Joseph H. Bowman, Dan O'Sullivan, Stan Thompson
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Patent number: 10137235Abstract: An embodiment of a peritoneal dialysis system includes an enclosure, a door hingedly attached to the enclosure, a stepper motor housed by the enclosure, a solid pump piston in operable communication with the stepper motor and including a solid pump shaft attached to or integrally formed with a solid pump head, and a disposable unit contacting the enclosure and the door. The disposable unit includes a moveable membrane operable with the solid pump head. The stepper motor is configured to move the solid pump head towards and away from the disposable unit. The system further includes a position detection apparatus operable with the stepper motor and located to provide an output indicative of a position of the solid pump head relative to a reference position.Type: GrantFiled: December 12, 2014Date of Patent: November 27, 2018Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Don Busby, Peter Hopping, Robert Childers, Shahid Din, Brian Lauman, Rick Kienman, Ian Richardson, Joseph H. Bowman, Jr., Loren M. Lundtveit, Jose Alvaro, Bruce Ming-Da Eu, Sherwin Shang
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Publication number: 20180214625Abstract: An embodiment of a peritoneal dialysis system includes a peritoneal dialysis hardware unit having a housing with a first opening, a door coupled to the housing and having a second opening, and a solid pump piston having a solid piston shaft attached to or integrally formed with a solid piston head. The system also includes a stepper motor operable to cause the solid pump piston to translate; a disposable pumping unit having a first and a second opposing surface, and a fluid pump receptacle extending from the first and second surface to fit within the second opening. The hardware unit and pumping unit are structured and arranged to allow the pumping unit to be placed into the hardware unit such that the fluid pump receptacle is aligned with the first opening, the second opening, and the solid piston head when the door is closed against the housing.Type: ApplicationFiled: March 22, 2018Publication date: August 2, 2018Inventors: Loren M. Lundtveit, Jose Alvaro, Joseph H. Bowman, Dan O'Sullivan, Stan Thompson
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Patent number: 9675744Abstract: A method of operating a disposable pumping unit includes enabling the disposable pumping unit to be loaded into a peritoneal dialysis hardware unit between a door and a housing of the hardware unit; structuring the disposable pumping unit to have a fluid pump receptacle, the fluid pump receptacle constructed and arranged to extend from both surfaces of the unit so as to fit within a first opening provided in the door and a second opening provided in the housing of the hardware unit; and enabling the disposable pumping unit to be guided into the hardware unit such that the fluid pump receptacle becomes aligned with the opposing first and second openings when the door is closed against the housing.Type: GrantFiled: October 26, 2012Date of Patent: June 13, 2017Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Loren M. Lundtveit, Jose Alvaro, Joseph H. Bowman, Jr., Daniel P. O'Sullivan, Stanley O. Thompson
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Publication number: 20150088054Abstract: An embodiment of a peritoneal dialysis system includes an enclosure, a door hingedly attached to the enclosure, a stepper motor housed by the enclosure, a solid pump piston in operable communication with the stepper motor and including a solid pump shaft attached to or integrally formed with a solid pump head, and a disposable unit contacting the enclosure and the door. The disposable unit includes a moveable membrane operable with the solid pump head. The stepper motor is configured to move the solid pump head towards and away from the disposable unit. The system further includes a position detection apparatus operable with the stepper motor and located to provide an output indicative of a position of the solid pump head relative to a reference position.Type: ApplicationFiled: December 12, 2014Publication date: March 26, 2015Inventors: Don Busby, Peter Hopping, Robert Childers, Shahid Din, Brian Lauman, Rick Kienman, Ian Richardson, Joseph H. Bowman, JR., Loren M. Lundtveit, Jose Alvaro, Bruce Ming-Da Eu, Sherwin Shang
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Publication number: 20150088053Abstract: An embodiment of a peritoneal dialysis system includes a peritoneal dialysis hardware unit having a housing with a first opening, a door coupled to the housing and having a second opening, and a solid pump piston having a solid piston shaft attached to or integrally formed with a solid piston head. The system also includes a stepper motor operable to cause the solid pump piston to translate; a disposable pumping unit having a first and a second opposing surface, and a fluid pump receptacle extending from the first and second surface to fit within the second opening. The hardware unit and pumping unit are structured and arranged to allow the pumping unit to be placed into the hardware unit such that the fluid pump receptacle is aligned with the first opening, the second opening, and the solid piston head when the door is closed against the housing.Type: ApplicationFiled: December 12, 2014Publication date: March 26, 2015Inventors: Loren M. Lundtveit, Jose Alvaro, Joseph H. Bowman, Dan O'Sullivan, Stan Thompson
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Patent number: 8298170Abstract: A method for making a peritoneal dialysis therapy machine having a tubing set includes: packaging an end of each of a plurality of the tubes of the set in a body; arranging the tubes according to a sequence of steps of a dialysis treatment set-up so that a user is urged to remove the tubes from the single body in a desired order; and configuring the body to plug connectors attached to each of the ends of the tubes.Type: GrantFiled: December 28, 2006Date of Patent: October 30, 2012Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Loren M. Lundtveit, Jose Alvaro, Joseph H. Bowman, Jr., Dan O'Sullivan, Stan Thompson
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Patent number: 7175606Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a frame of a disposable unit for a medical fluid system is provided. The frame includes a body having a pair of opposing sides and defining a space between the sides, and a number of membranes sealed to the body along the opposing sides. The body and the membranes form at least one medical fluid pathway in the space between the opposing sides, and the opposing sides are bowed.Type: GrantFiled: May 24, 2002Date of Patent: February 13, 2007Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Joseph H. Bowman, Jr., Loren M. Lundtveit, Jose Alvaro, Keith M. K. Anderson, Sherwin Shang, Don Busby, Ben Kellam
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Patent number: 7153286Abstract: The present invention provides automated peritoneal dialysis systems, methods of operating the systems and devices for performing same. A typical therapy performed by the present invention begins by draining dialysis solution that is already in the patient's peritoneal cavity. The system pumps fresh dialysate from one of a plurality of supply bags, through an in-line heater to the patient's peritoneal cavity. After a dwell period, the spent dialysate in the cavity is pumped out of the patient to a drain or other disposal means. The system then pumps fresh dialysate from the supply bags to the patient and the procedure is repeated as defined in the therapy protocol. The system can pump a last bag of dialysate to the peritoneal cavity for an extended dwell, such as a daytime dwell.Type: GrantFiled: May 24, 2002Date of Patent: December 26, 2006Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Don Busby, Peter Hopping, Robert Childers, Shahid Din, Brian Lauman, Rick Kienman, Ian Richardson, Joseph H. Bowman, Jr., Loren M. Lundtveit, Jose Alvaro, Bruce Ming-Da Eu, Sherwin Shang
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Patent number: 7115228Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a device for organizing a number of tubes extending from a unit of a medical fluid system is provided. The organizing device includes a body having a number of openings that each can removably receive an end of one of the number of tubes.Type: GrantFiled: May 24, 2002Date of Patent: October 3, 2006Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Loren M. Lundtveit, Jose Alvaro, Joseph H. Bowman, Jr., Dan O'Sullivan, Stan Thompson
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Patent number: 7083719Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a medical system is provided that includes (i) a liquid pump; (ii) tubing in communication with the liquid pump; and (iii) at least one processor that operates with the liquid pump to: (a) pump liquid through the tubing, the tubing having an end and a hydrophobic filter at the end, the filter allowing air but not the liquid to escape from the end of the tubing, (b) receive a signal indicating a pressure increase inside the tubing, and (c) cause the pumping to stop when air has been purged substantially from the tubing.Type: GrantFiled: March 11, 2005Date of Patent: August 1, 2006Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Joseph H. Bowman, Jr., Loren M. Lundtveit, Jose Alvaro, Ben Kellam, Don Busby, Bruce Ming-Da Eu
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Patent number: 6929751Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a member for removably securing a medical fluid tube is provided. The member includes a body providing a first fluid pathway and an opening for removably receiving an end of the medical tube. The first fluid pathway is placed in fluid communication with a second fluid pathway defined by the tube when the end of the tube is removably receiving. The member further includes a filter so positioned and arranged so as to cause fluid flowing through the first fluid pathway to pass through the filter, the filter allowing air but not liquid to flow through the first fluid pathway.Type: GrantFiled: May 24, 2002Date of Patent: August 16, 2005Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Joseph H. Bowman, Jr., Loren M. Lundtveit, Jose Alvaro, Ben Kellam, Don Busby, Bruce Ming-Da Eu
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Patent number: 6764761Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a film is provided. The film includes a layer of a polymer blend having from about 90% to about 99% by weight of a first component containing a styrene and hydrocarbon copolymer and from about 10% to about 1% of a high melt strength polypropylene.Type: GrantFiled: May 24, 2002Date of Patent: July 20, 2004Assignee: Baxter International Inc.Inventors: Bruce Ming-Da Eu, Sherwin Shang, Tahua Yang, Michael T. K. Ling, Loren M. Lundtveit
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Publication number: 20030217964Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a film is provided. The film includes a layer of a polymer blend having from about 90% to about 99% by weight of a first component containing a styrene and hydrocarbon copolymer and from about 10% to about 1% of a high melt strength polypropylene.Type: ApplicationFiled: May 24, 2002Publication date: November 27, 2003Inventors: Bruce Ming-Da Eu, Sherwin Shang, Tahua Yang, Michael T.K. Ling, Loren M. Lundtveit
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Publication number: 20030220607Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a peritoneal dialysis apparatus is provided that includes a body provided with an operating portion and a display, a mounting portion provided on the body for detachably mounting a cassette, a pumping actuating device for setting a diaphragm in a positive and negative pressure state to distribute fluid from the dialysis fluid container to the drained fluid container, and a heater for heating an amount of dialysis fluid. The apparatus further includes a flow path switching device for opening/closing a flow path switching portion in order to form a flow path through which the heated dialysis fluid is distributed into and drained from a peritoneal cavity of a patient, and a controller for controlling operation of the operating portion, the display, the pumping actuating device, the heater, and the flow path switching device.Type: ApplicationFiled: May 24, 2002Publication date: November 27, 2003Inventors: Don Busby, Peter Hopping, Robert Childers, Shahid Din, Brian Lauman, Rick Kienman, Ian Richardson, Joseph H. Bowman, Loren M. Lundtveit, Jose Alvaro, Bruce Ming-Da Eu, Sherwin Shang
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Publication number: 20030217976Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a member for removably securing a medical fluid tube is provided. The member includes a body providing a first fluid pathway and an opening for removably receiving an end of the medical tube. The first fluid pathway is placed in fluid communication with a second fluid pathway defined by the tube when the end of the tube is removably receiving. The member further includes a filter so positioned and arranged so as to cause fluid flowing through the first fluid pathway to pass through the filter, the filter allowing air but not liquid to flow through the first fluid pathway.Type: ApplicationFiled: May 24, 2002Publication date: November 27, 2003Inventors: Joseph H. Bowman, Loren M. Lundtveit, Jose Alvaro, Ben Kellam, Don Busby, Bruce Ming-Da Eu
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Publication number: 20030220599Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a device for organizing a number of tubes extending from a unit of a medical fluid system is provided. The organizing device includes a body having a number of openings that each can removably receive an end of one of the number of tubes.Type: ApplicationFiled: May 24, 2002Publication date: November 27, 2003Inventors: Loren M. Lundtveit, Jose Alvaro, Joseph H. Bowman, Dan O'Sullivan, Stan Thompson
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Publication number: 20030217957Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a manifold for a medical fluid unit including at least one flexible membrane is provided. The manifold includes a plastic body defining an aperture, a fluid pathway communicating with the aperture and at least partially defined by the plastic body, and at least one port extended from the plastic body and communicating with the aperture. The port has a thickness and defines an opening, wherein at least a portion of the thickness is tapered and at least a portion of the tapered portion is heat sealed to the membrane.Type: ApplicationFiled: May 24, 2002Publication date: November 27, 2003Inventors: Joseph H. Bowman, Loren M. Lundtveit, Keith M.K. Anderson, Sherwin Shang
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Publication number: 20030220605Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a frame of a disposable unit for a medical fluid system is provided. The frame includes a body having a pair of opposing sides and defining a space between the sides, and a number of membranes sealed to the body along the opposing sides. The body and the membranes form at least one medical fluid pathway in the space between the opposing sides, and the opposing sides are bowed.Type: ApplicationFiled: May 24, 2002Publication date: November 27, 2003Inventors: Joseph H. Bowman, Loren M. Lundtveit, Jose Alvaro, Keith M.K. Anderson, Sherwin Shang, Don Busby, Ben Kellam