Stepper motor driven peritoneal dialysis machine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61M-001/00
A61M-037/00
A61M-001/26
A61M-001/28
출원번호
US-0963553
(2013-08-09)
등록번호
US-9511180
(2016-12-06)
발명자
/ 주소
(Krensky) Britton, Andrea
Busby, Donald
Callahan, Eric
Childers, Robert
Hopping, Peter
Khorashahi, Seyed
Reese, William
Sharo, Randall
Toczko, Debra
Yue, Li
출원인 / 주소
Baxter International Inc.
대리인 / 주소
K&L Gates LLP
인용정보
피인용 횟수 :
0인용 특허 :
209
초록▼
A peritoneal dialysis system includes: an enclosure including an actuation surface and a door; a stepper motor housed by the enclosure; a pump head and a solid pump piston structurally linking the pump head to the stepper motor; and a disposable unit accepted by the enclosure, the disposable unit in
A peritoneal dialysis system includes: an enclosure including an actuation surface and a door; a stepper motor housed by the enclosure; a pump head and a solid pump piston structurally linking the pump head to the stepper motor; and a disposable unit accepted by the enclosure, the disposable unit including a flexible membrane attached to a rigid piece, the actuation surface of the enclosure and the disposable unit so configured and arranged that when the stepper motor turns and consequently translates the solid pump piston and the pump head towards the door, the pump head physically contacts and stretches the membrane from a relaxed position to a stretched position, and when the stepper motor turns and consequently translates the solid pump piston and the pump head away from the door, the membrane follows the pump head and transitions from the stretched position to the relaxed position.
대표청구항▼
1. A peritoneal dialysis system comprising: an enclosure including an actuation surface and a door;a stepper motor housed by the enclosure;a pump head and a solid pump piston structurally linking the pump head to the stepper motor;a vacuum source; anda disposable unit accepted by the enclosure, the
1. A peritoneal dialysis system comprising: an enclosure including an actuation surface and a door;a stepper motor housed by the enclosure;a pump head and a solid pump piston structurally linking the pump head to the stepper motor;a vacuum source; anda disposable unit accepted by the enclosure, the disposable unit including a flexible membrane attached to a rigid piece, the vacuum source configured to apply a negative pressure to the flexible membrane to pull the flexible membrane towards the pump head, the actuation surface of the enclosure and the disposable unit so configured and arranged that when the stepper motor turns and consequently translates the solid pump piston and the pump head towards the door, the pump head physically contacts and stretches the flexible membrane from a relaxed position to a stretched position, and when the stepper motor turns and consequently translates the solid pump piston and the pump head away from the door, the flexible membrane follows the pump head and transitions from the stretched position to the relaxed position. 2. The peritoneal dialysis system of claim 1, wherein the stepper motor moves the solid pump piston and pump head from a home position in which the flexible membrane is in the relaxed position to an end-of-stroke position in which the flexible membrane is in the stretched position. 3. The peritoneal dialysis system of claim 2, wherein at least one of the home position or the end-of stroke position can be maintained via encoder feedback, sensor feedback or pump accuracy. 4. The peritoneal dialysis system of claim 1, wherein the negative pressure is applied between the pump head and the flexible membrane to help maintain contact between the flexible membrane and the pump head. 5. The peritoneal dialysis device of claim 4, wherein the negative pressure is applied through the actuation surface so as to reach between the pump head and the flexible membrane. 6. The peritoneal dialysis system of claim 1, wherein the vacuum source is in fluid communication with an area between the pump head and the flexible membrane. 7. The peritoneal dialysis system of claim 6, which includes a pneumatic line located between the vacuum source and the area between the pump head and the flexible membrane. 8. The peritoneal dialysis system of claim 1, wherein the flexible membrane is a first flexible membrane, and wherein the disposable unit includes a second flexible membrane attached to the rigid piece, the first and second flexible membranes forming a fluid pumping chamber. 9. The peritoneal dialysis system of claim 1, wherein the door is connected hingedly to the enclosure. 10. The peritoneal dialysis system of claim 1, wherein the door includes an opening to accept the pump head while stretching the flexible membrane. 11. The peritoneal dialysis system of claim 1, which includes at least one valve actuator, wherein the disposable unit includes at least one valve seat, and wherein the actuation surface of the enclosure includes at least one opening to allow the at least one valve actuator to mechanically communicate with the at least one valve seat. 12. The peritoneal dialysis system of claim 1, wherein the pump head when fully retracted by the stepper motor and pump piston forms a small gap between the pump head and the flexible membrane, the small gap smaller than a distance traveled by the pump head when stretching the flexible membrane towards the door of the enclosure. 13. The peritoneal dialysis system of claim 12, wherein a membrane contacting surface of the pump head is rounded or sloped, causing the gap to be smallest at the center of the pump head. 14. The peritoneal dialysis system of claim 1, wherein the pump head is pulled against the actuation surface when fully retracted. 15. A peritoneal dialysis system comprising: an enclosure including an actuation surface and door;a stepper motor housed by the enclosure;a pump head and a solid pump piston structurally linking the pump head to the stepper motor; anda disposable unit including a flexible membrane attached to a rigid piece, wherein the enclosure accepts the disposable unit so that (i) the flexible membrane in an unstressed state lies between the door and the actuation surface with the pump head lying between the flexible membrane and the actuation surface, and (ii) the pump head in a fully retracted position forms a gap between the pump head and the flexible membrane, wherein the gap is smaller than a distance traveled by the pump head and the flexible membrane when the stepper motor and the solid pump piston cause the pump head to move towards the door. 16. The peritoneal dialysis system of claim 15, wherein a thickness of the pump head is non-uniform and wherein the gap resides between the flexible membrane and a thickest portion of the pump head. 17. The peritoneal dialysis system of claim 15, wherein the pump head stretches the flexible membrane as the stepper motor and the solid pump piston move the pump head and the flexible membrane towards the door, and wherein the flexible membrane unstretches as the stepper motor and the solid pump piston pull the pump head away from the door. 18. The peritoneal dialysis system of claim 15, wherein the gap enables a negative pressure to be applied between the pump head and the flexible membrane. 19. A peritoneal dialysis method comprising: applying a negative pressure from a vacuum source to a flexible membrane to pull the flexible membrane towards a pump head;mechanically pushing a solid pump piston and the pump head;causing the flexible membrane to stretch via the pushing of the solid pump piston and the pump head;closing a chamber volume by stretching the flexible membrane;expelling peritoneal dialysis fluid by closing the chamber volume;mechanically pulling the solid pump piston and the pump head;causing the flexible membrane to unstretch by the pulling of the solid pump piston and the pump head;opening the chamber volume by unstretching the flexible membrane; anddrawing peritoneal dialysis fluid by opening the chamber volume. 20. The peritoneal dialysis method of claim 19, wherein the expelling and the drawing of peritoneal dialysis fluid include expelling peritoneal dialysis fluid from the chamber volume and pulling peritoneal dialysis fluid into the chamber volume, respectively. 21. The peritoneal dialysis method of claim 19, wherein the peritoneal dialysis fluid is fresh or spent peritoneal dialysis fluid.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (209)
Bilstad Arnold C. (Deerfield IL) Brown Richard I. (Northbrook IL) Kruger Robert J. (Arlington Heights IL), Actuator apparatus for a prepackaged fluid processing module having pump and valve elements operable in response to appl.
Bilstad Arnold C. (Deerfield IL) Brown Richard I. (Northbrook IL) Kruger Robert J. (Arlington Heights IL), Actuator apparatus for a prepackaged fluid processing module having pump and valve elements operable in response to exte.
Tegrarian Haig V. (17 Kitchner Ct. Durham NC 27705) Ciftan Mikael (2606 Tryon Rd. Durham NC 27705), Apparatus for infusing blood and other related fluids into a patient\s body.
Jevne Allan H. (Anoka MN) Coury Arthur J. (St. Paul MN) Cahalan Patrick T. (Champlin MN), Biomedical apparatus having fatty acid dimer derived skin compatible adhesive composition thereon.
Blemberg Robert J. (Appleton WI) Eckstein John P. (Neenah WI) Nordness Mark E. (Appleton WI), Blended films, structures therefrom, and methods of making and using them.
Dennehey T. Michael (1411 N. Hickory Arlington Heights IL 60004) Brown Richard I. (2335 Peach Tree La. Northbrook IL 60062) Williamson Warren P. (101 Southbend Ct. Loveland OH 45140), Blood processing systems using a peristaltic pump module with valve and sensing station for operating a peristaltic pump.
Epstein Paul (Brookline MA) Petschek Harry (Lexington MA) LaWhite Eric (South Royalton VT) Strohl Clair (Norfolk MA) Coyne Henry (Framingham MA) Kaleskas Edward (Jefferson MA) Adaniya George (Swampsc, Cassette for programable multiple input infusion system.
Orkin Fredric I. (Deerfield IL) Liber Theodore (Highland Park IL) Smith Charles R. (Libertyville IL) Knowlton Kimball J. (Lindenhurst IL) Huntley Albin (Martinez CA), Closed multi-fluid delivery system and method.
Kenley Rodney S. (Libertyville IL) Matthews Dawn (Grayslake IL) Treu Dennis M. (Gurnee IL) Peter ; Jr. Frederick H. (Barrington IL) Feldsein Thomas M. (Palatine IL) Minns H. Gordon (Jackson WY), Dialysate separation method.
Owens Dana J. (Irving TX) Raines Aaron (Dallas TX) Rasmussen Ed G. (Carrollton TX) Ozinga David G. (Flower Mound TX) Harrison David J. (Carrollton TX) Anderson Carl R. (Dallas TX), Disposable cassette with negative head height fluid supply.
Owens Dana J. (Irving TX) Raines Aaron (Dallas TX) Rasmussen Ed G. (Carrollton TX) Harrison David J. (Carrollton TX) Anderson Carl R. (Dallas TX), Disposable cassette with negative head height fluid supply and method.
Lawless Michael W. ; Soberon Peter A. ; Kaul Ashok ; Minick Steven E. ; Hoerner Gregory G. ; Hermann Robert A. ; Kreinick Stephen J., Disposable fluid infusion pumping cassette having an interrelated flow control and pressure monitoring arrangement.
Hossain K. Mosaddeq (Hillsborough NJ) Paganelli Jude V. (New Britain PA) Fischer Bernd R. (E. Norristown PA) Bross Robert M. (Ivyland PA) Cook Kenneth P. (Blue Bell PA), Disposable vacuum/peristaltic pump cassette system.
Hossain K. Mosaddeq (Hillsborough NJ) Paganelli Jude V. (New Britain PA) Fischer Bernd R. (E. Norristown PA) DeMeo Deborah A. (Tustin CA) Bross Robert M. (Ivyland PA) Cook Kenneth P. (Blue Bell PA), Disposable vacuum/peristaltic pump cassette system.
Belt Fletcher C ; Westberg Tom ; Vandlik Mark R ; Tesluk Chris ; McCormick Patrick A, Door latching assembly for holding a fluid pressure actuated cassette during use.
Pastrone John (Los Gatos CA) Chamness Leland D. (Mountain View CA) Fellingham George H. (San Jose CA) Jimison Walter L. (Palo Alto CA), Drive mechanism for disposable fluid infusion pumping cassette.
Ezell Larry O. (Clinton MS) Schmid John (Jackson MS) Tovey Peter (Jackson MS), Failsafe electrohydraulic control system for variable displacement pump.
Kamen Dean L. (Bedford NH) Seale Joseph B. (Gorham ME) Briggs Joseph (Manchester NH) Arnold Finn (Sutton MA), Flow control system with volume-measuring system using a resonatable mass.
Treu Dennis M. ; Burbank Jeffrey H. ; Brugger James M., Flow-through peritoneal dialysis systems and methods with on-line dialysis solution regeneration.
Cooke James E. (1506 Madrono Ave. Palo Alto CA 94306) Barkan Philip (Stanford CA) Kovacs Gregory (Palo Alto CA), High accuracy disposable cassette infusion pump.
Kenley Rodney S. (Libertyville IL) Treu Dennis M. (Gurnee IL) Peter ; Jr. Frederick H. (Barrington IL) Feldsein Thomas M. (Palatine IL) Pawlak Kenneth E. (Vernon Hills IL) Adolf Wayne F. (Mt. Prospec, Hot water disinfection of dialysis machines, including the extracorporeal circuit thereof.
Lutz Robert G. (Spring TX) Gelles Richard (Houston TX) Gergen William P. (Houston TX), Impact resistant blends of thermoplastic polyamides, polyolefins and elastomers.
Hyman Oscar (Park Ridge IL) Pribil Jeffery (Algonquin IL) Zeilig Avi (Rosh-Ha\ain ILX) Deckert Clinton (Poway CA), Infusion pump with dual-latching mechanism.
Packard Warren J. (Chicago IL) Pawlak Kenneth E. (Vernon Hills IL), Instantaneous volume measurement system and method for non-invasively measuring liquid parameters.
Bryant Robert J. (Manchester NH) Bouchard Clement D. (Pembroke NH) Kamen Dean (Bedford NH) Lanigan Richard (Concord NH) Miller Bradley D. (Londonderry NH) Spencer Geoffrey P. (Manchester NH) Vincent , Liquid pumping mechanisms for peritoneal dialysis systems employing fluid pressure.
Bryant Robert J. (Manchester NH) Bouchard Clement D. (Pembroke NH) Kamen Dean (Bedford NH) Lanigan Richard (Concord NH) Miller Bradley D. (Londonderry NH) Spencer Geoffrey P. (Manchester NH) Vincent , Liquid pumping mechanisms for peritoneal dialysis systems employing fluid pressure.
Anderson Robert L. (1011 Rainbow Way Boulder CO 80303) Castleberry Jeffrey P. (967 Utica Cir. Boulder CO 80304) Stracener Steve W. (P.O. Box 731 Frederick CO 80530), Magnetic detent and position detector for fluid pump motor.
Lapidus Stanley N. (Bedford NH) Kamen Dean (Bedford NH) Villeneuve Richard R. (Bedford NH) Polk ; Jr. Lewis T. (Bedford MA), Method and apparatus for control of flow through a filter chamber by measured chamber equilibration pressure.
Peterson Bruce A. (Milwaukie OR) Hogard Michael E. (Oregon City OR) Johnson Harley D. (Portland OR) Kelly Thomas D. (Portland OR) Long Jean M. (Portland OR) Preston ; Jr. William G. (Portland OR), Method and apparatus for kidney dialysis.
Robert Warren Childers ; Vital Eerlingen BE; Patrick Balteau BE; Duane Belongie, Method and apparatus for monitoring and controlling peritoneal dialysis therapy.
Mahurkar Sakharam D. (6171 N. Sheridan ; Suite 1112 Chicago IL 60660), Method and apparatus for using dual-lumen catheters for extracorporeal treatment.
Kamen Dean L. (Bedford NH) Seale Joseph B. (Gorham ME) Briggs Joseph (Manchester NH) Arnold Finn (Sutton MA), Method and system for measuring volume and controlling flow.
Lawless Michael W. (Poway CA) Soberon Peter A. (Cardiff CA) Kaul Ashok (San Diego CA) Minick Steven E. (San Diego CA) Hoerner Gregory G. (Poway CA) Hermann Robert A. (Chula Vista CA) Kreinick Stephen, Method of delivering liquid to a patient via a disposable pumping cassette having a flow control & pressure monitoring m.
Wynkoop Richard D. (Des Plaines IL) Ogden John E. (Libertyville IL) Wecker Sheldon M. (Libertyville IL), Method of detecting occlusions in a solution pumping system.
Brugger James M. ; Burbank Jeffrey H. ; Finch Charles David ; Kuiper Hendrik K., Methods and apparatus for performing flow-through peritoneal dialysis.
Bryant Robert J. ; Gray Lawrence B. ; Spencer Geoff P., Methods and systems for detecting the presence of a gas in a pump and preventing a gas from being pumped from a pump.
Ford Dixon (Farmington UT) Ford Steven (Farmington UT), Parenteral fluid warmer apparatus and disposable cassette utilizing thin, flexible heat-exchange membrane.
Granzow, Daniel B.; Lueders, Arthur L.; Davis, Ralph L.; Pernic, Stanley J.; Hitchcock, Jr., James R.; Buckley, Francis D., Peritoneal dialysis apparatus.
Kamen Dean (Bedford NH) Lanigan Richard (Concord NH) Vincent Douglas E. (Manchester NH), Peritoneal dialysis systems and methods employing a liquid distribution and pump cassette with self-contained air isolat.
Bryant Robert J. (Manchester NH) Kamen Dean (Bedford NH) Vincent Douglas E. (Manchester NH), Peritoneal dialysis systems and methods employing pneumatic pressure and temperature-corrected liquid volume measurement.
Kamen Dean (Bedford NH) Spencer Geoffrey P. (Manchester NH) Vincent Douglas E. (Manchester NH), Peritoneal dialysis systems employing a liquid distribution and pumping cassette that emulates gravity flow.
Gardetto William W. ; Heacox John K. ; Matthews James L., Portable perfusion/oxygenation module having mechanically linked dual pumps and mechanically actuated flow control for.
Bilstad Arnold C. (Deerfield IL) Brown Richard I. (Northbrook IL) Kruger Robert J. (Arlington Heights IL), Prepackaged fluid processing module having pump and valve elements operable in response to applied pressures.
Epstein Paul (Brookline MA) Petschek Harry (Lexington MA) LaWhite Eric (South Royalton VT) Strohl Clair (Norfolk MA) Coyne Henry (Framingham MA) Kaleskas Edward (Jefferson MA) Adaniya George (Swampsc, Pressure responsive multiple input infusion system.
Polaschegg Hans-Dietrich (Oberursel DEX), Process for determining the operability of the structural components in the dialysis section of a dialyzer of a hemodial.
Clement D. Bouchard ; Robert J. Bryant ; Lawrence B. Gray ; Geoff P. Spencer, Pumping cartridge including a bypass valve and method for directing flow in a pumping cartridge.
Moss Richard (4928 Panorama Cir. West Bloomfield MI 48323) Erlich Frederick L. (34536 Quaker Valley Farmington Hills 48331), Reusable medical cassette for ambulatory medical infusion pumps.
Ogden John E. (Libertyville IL) Tripp Edward (Antioch IL) Rudzena William L. (McHenry IL), Solution pumping for maximizing output while minimizing uneven pumping pressures.
Kramer David E. (Northbrook IL) Muetterties Andrew J. (Mundelein IL) Szempruch Walter T. (Gurnee IL), Solution pumping system including disposable pump cassette.
Wecker Sheldon M. (Libertyville IL) Abrahamson Kent D. (Libertyville IL) Joyce Thomas P. (Libertyville IL), Solution pumping system with compressible pump cassette.
Rabenau Richard (Birmingham AL) Lisak Stephen P. (Arab AL) Kehne Terry B. (Arab AL) Davis Richard M. (Guntersville AL), Sterile fluid pump diaphragm construction.
Kamen Dean L. ; Grinnell Charles M. ; Mandro Marc A. ; Gilbreath Dennis ; Grant Kevin ; Demers Jason A. ; Larkins William T. ; Manning Robert ; Lanigan Richard, System and method for mixing and delivering intravenous drugs.
Kamen Dean L. ; Grinnell Charles M. ; Mandro Marc A. ; Gilbreath Dennis ; Grant Kevin ; Demers Jason A. ; Larkins William T. ; Manning Robert ; Lanigan Richard, System for delivering intravenous drugs.
Holub Fred F. (Schenectady NY) Rock John A. (Becket MA), Ternary polymer blends containing a polyetherimide, a polyphthalate carbonate, and rubber modified vinyl aromatic polyme.
Kenley Rodney S. ; Matthews Dawn ; Wilkerson Douglas L. ; DeJesus Joel ; Brose Tom L. ; Gebhardt Andrew ; Plummer Lori A. ; Peter ; Jr. Frederick H. ; Sage Russel L. ; Treu Dennis M. ; Wiklund Michae, User interface and method for control of medical instruments, such as dialysis machines.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.