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Class Information
Number: 604/141
Name: Surgery > Means for introducing or removing material from body for therapeutic purposes (e.g., medicating, irrigating, aspirating, etc.) > Treating material introduced into or removed from body orifice, or inserted or removed subcutaneously other than by diffusing through skin > Material introduced or removed through conduit, holder, or implantable reservoir inserted in body > Treating material forced into or out of body by self-acting fluid pressure, motor-driven, or mechanical energy storing means (e.g., pressure infusion or aspiration, etc.) > Material impelled by pressurized charge of gas or vacuum > Material impelled by means (e.g., diaphragm, piston) moved by gas or vacuum pressure
Description: Subject matter wherein the pressurized charge of gas or vacuum moves an intermediate means which in turn forces the material into or out of the body.

Sub-classes under this class:

Class Number Class Name Patents
604/143 Piston impelled by gas or vacuum pressure 100
604/142 Reservoir prepressurized or exhausted by squeeze bulb 59

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8684971 Automated dialysis system using piston and negative pressure Apr. 1, 2014
8663158 Needleless injector drug capsule and a method for filling thereof Mar. 4, 2014
8608642 Methods and devices for treating morbid obesity using hydrogel Dec. 17, 2013
8603025 Gas-assisted fluid-dispensing device Dec. 10, 2013
8595950 System and method for spray drying a liquid Dec. 3, 2013
8591478 Reduced size implantable pump Nov. 26, 2013
8551044 Multiple reservoir implantable drug infusion device and method Oct. 8, 2013
8545477 Multiple reservoir implantable drug infusion device and method Oct. 1, 2013
8491524 Needleless injector drug capsule and a method for filling thereof Jul. 23, 2013
8480624 Self-contained power-assisted syringe Jul. 9, 2013
8480656 Two part fluid dispenser Jul. 9, 2013
8460256 Collapsible fluid collection and disposal system and related methods Jun. 11, 2013
8425462 Devices, systems, and methods for medicament delivery Apr. 23, 2013
8425493 Implantable medication delivery device Apr. 23, 2013
8394081 Wound treatment apparatuses and methods for controlled delivery of fluids to a wound Mar. 12, 2013
8387270 System and method for spray drying a liquid Mar. 5, 2013
8376999 Automated dialysis system including touch screen controlled mechanically and pneumatically actuated pumping Feb. 19, 2013
8359767 System and method for spray drying a liquid Jan. 29, 2013
8352041 Remote controls and ambulatory medical systems including the same Jan. 8, 2013
8343102 Fluid driven medical injectors Jan. 1, 2013
8317753 Special purpose fluid dispenser Nov. 27, 2012
8317756 Self-contained pressurized injection device Nov. 27, 2012
8313475 Liquid dispenser Nov. 20, 2012
8292876 Special purpose fluid dispenser with pre-filled reservoir Oct. 23, 2012
8287521 Special purpose fluid dispenser with pre-filled reservoir Oct. 16, 2012
8267894 Self-contained portable apparatus for administration of a drug solution Sep. 18, 2012
8262605 Needleless delivery systems Sep. 11, 2012
8251981 Regulator Aug. 28, 2012
8241243 Needleless injector drug capsule and a method for filling thereof Aug. 14, 2012
8211060 Reduced size implantable pump Jul. 3, 2012
8202248 Dialysis implant and methods of use Jun. 19, 2012
8187227 Self returning contamination barrier May. 29, 2012
8177750 Variable flow infusion pump system May. 15, 2012
8172797 Medical delivery device May. 8, 2012
8118780 Hydraulic remote for a medical fluid injector Feb. 21, 2012
8114064 Infusion device with piston pump Feb. 14, 2012
8105281 Devices, systems and methods for medicament delivery Jan. 31, 2012
8100890 Special purpose fluid dispenser with pre-filled reservoir Jan. 24, 2012
8066671 Automated dialysis system including a piston and stepper motor Nov. 29, 2011
8053721 Pump set and pump with electromagnetic radiation operated interlock Nov. 8, 2011
8034027 Infusion pump with phase separator Oct. 11, 2011
8034029 Multi-reservoir implantable pump with patient controlled actuation Oct. 11, 2011
8034030 Multi-reservoir implantable pump with variable flow rate capabilities Oct. 11, 2011
8002753 Self-contained pressurized injection device Aug. 23, 2011
7998117 Drug delivery device Aug. 16, 2011
7905858 System and method for providing warm, pressurized irrigation fluid Mar. 15, 2011
7896843 Special purpose fluid dispenser Mar. 1, 2011
7896867 Fluid delivery device having an electrochemical pump with an ion-exchange membrane and associated method Mar. 1, 2011
7867198 Medical liquid infusion apparatus Jan. 11, 2011
7853362 Method and device for regulating fluid pump pressures Dec. 14, 2010

1 2 3 4 5

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