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Class Information
Number: 604/224
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 > Means moved by person to inject or remove fluent material to or from body inserted conduit, holder, or reservoir > Injector or aspirator syringe supported only by person during use (e.g., hand held hypodermic syringe, douche tube with forced injection, etc.) > With piston or plunger for expelling material from body or injector reservoir > Piston moved by screw or rack
Description: Subject matter wherein movement of the piston is effected by means of a threaded mechanism or a rack and pinion type mechanism.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
6783515 High pressure delivery system Aug. 31, 2004
6712794 Apparatus for delivering a viscous liquid to a surgical site Mar. 30, 2004
6663602 Injection device Dec. 16, 2003
6607512 Device for delivery of liquid and gel-like surgical materials and methods for use thereof Aug. 19, 2003
6585699 Drug delivery device provided with a one-way mechanism Jul. 1, 2003
6582405 Electrically-driven dental injector Jun. 24, 2003
6582404 Dose setting limiter Jun. 24, 2003
6569126 Cylinder ampoule May. 27, 2003
6474219 Flexible piston rod Nov. 5, 2002
6368314 Monitoring of the pressure of a product fluid to be administered in dosed amounts during infusion or injection Apr. 9, 2002
6106501 Injection device Aug. 22, 2000
6074372 Dose setting mechanism and an injection syringe having such a dose setting mechanism Jun. 13, 2000
6050450 Apparatus and system for precision dispensing of fluids and method of operating the same Apr. 18, 2000
6048334 Syringe, injector and injector system Apr. 11, 2000
6045537 Syringe with automatically withdrawable of piston rod Apr. 4, 2000
6042565 Syringe, injector and injector system Mar. 28, 2000
6024728 Veterinary syringe with dosing device Feb. 15, 2000
6007515 Controlled action, manually operable fluid application Dec. 28, 1999
6004298 Injection devices Dec. 21, 1999
5807334 Fluid dispensing apparatus Sep. 15, 1998
5743889 Incrementing dosage mechanism for syringe Apr. 28, 1998
5733258 Livestock biological and vaccine handling system to include pistol grip syringe and cartridge Mar. 31, 1998
5728075 Injection devices Mar. 17, 1998
5685864 Locking device for aspirator, syringe or like instrument Nov. 11, 1997
5637095 Medication infusion pump with flexible drive plunger Jun. 10, 1997
5624408 Syringe Apr. 29, 1997
5611784 Manual dispensing aid for a syringe Mar. 18, 1997
5599314 Syringe with incrementally actuated plunger Feb. 4, 1997
5591136 Injection device Jan. 7, 1997
5472424 Syringe with volume displacement apparatus Dec. 5, 1995
5456388 Thumbwheel operated metering dispenser for adhesives Oct. 10, 1995
5339830 Blood coagulation test system Aug. 23, 1994
5336183 Inflator Aug. 9, 1994
5300042 Medication dispensing apparatus Apr. 5, 1994
5290260 Rotational pressure drive for a medical syringe Mar. 1, 1994
5284132 Device for the transnasal or oral administration of drugs or the like Feb. 8, 1994
5284480 Inflation/deflation syringe with threaded plunger Feb. 8, 1994
5213115 Inflation system for a balloon catheter May. 25, 1993
5209732 Locking syringe with thread-release lock May. 11, 1993
5160327 Rotational pressure drive for a medical syringe Nov. 3, 1992
5137514 Inflation syringe assembly for percutaneous transluminal angioplasty Aug. 11, 1992
5104380 Syringe with dose metering device Apr. 14, 1992
5098386 Infant nasal suction apparatus Mar. 24, 1992
5057078 Locking syringe Oct. 15, 1991
5047012 Motorized syringe with multiple port manifold Sep. 10, 1991
5047015 Locking syringe Sep. 10, 1991
5004124 Method and apparatus for dispensing a fluid substance Apr. 2, 1991
4988337 Syringe pump apparatus Jan. 29, 1991
4968299 Method and device for injection Nov. 6, 1990
4929234 Automatic drip infusion set May. 29, 1990

1 2 3

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