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Class Information
Number: 604/230
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 > Means for reducing piston sliding friction (e.g., oil applicator, use of low friction material, etc.)
Description: Subject matter including means for decreasing friction between piston and its barrel reservoir.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7246551 |
Liquid handling device with surface features at a seal |
Jul. 24, 2007 |
| 7186242 |
Localized lubrication of syringe barrels and stoppers |
Mar. 6, 2007 |
| 7141042 |
Low silicone glass prefillable syringe |
Nov. 28, 2006 |
| 7111848 |
Gasket and method of manufacturing the gasket |
Sep. 26, 2006 |
| 6749590 |
Syringe barrel and plunger assembly having ellipsoidal configurations |
Jun. 15, 2004 |
| 6746430 |
Low silicone plastic prefillable syringe |
Jun. 8, 2004 |
| 6663603 |
Localized lubrication of syringe barrels and stoppers |
Dec. 16, 2003 |
| 6562010 |
Localized lubrication of syringes, barrels and stoppers |
May. 13, 2003 |
| 6482509 |
Coating system providing low friction |
Nov. 19, 2002 |
| 6461334 |
Medical article with coated surfaces exhibiting low friction and protein adsorption |
Oct. 8, 2002 |
| 6425886 |
Syringe and apparatus for manufacturing the same |
Jul. 30, 2002 |
| 6398763 |
Syringe apparatus having a plunger tip with a flexible spring lever |
Jun. 4, 2002 |
| 6331174 |
Prefilled, low particle, sterile disposable syringe for injecting preparations and procedure for manufacture |
Dec. 18, 2001 |
| 6162200 |
Syringe and apparatus for manufacturing the same |
Dec. 19, 2000 |
| 6142977 |
Prefilled, sterilized syringe with a new and improved plug |
Nov. 7, 2000 |
| 6093175 |
Localized lubrication of syringe barrels and stoppers |
Jul. 25, 2000 |
| 6090078 |
Dampening devices and methods for needle retracting safety vascular access devices |
Jul. 18, 2000 |
| 6090081 |
Sealing stopper for a syringe and a prefilled syringe |
Jul. 18, 2000 |
| 6053895 |
Syringe with a new and improved plug |
Apr. 25, 2000 |
| 5957886 |
Spring-Powered dispensing device |
Sep. 28, 1999 |
| 5951527 |
Sliding piston for syringe |
Sep. 14, 1999 |
| 5639851 |
High strength, melt processable, lactide-rich, poly(lactide-CO-P-dioxanone) copolymers |
Jun. 17, 1997 |
| 5607400 |
Pre-fillable syringe and stopper assembly therefor |
Mar. 4, 1997 |
| 5549573 |
Syringe |
Aug. 27, 1996 |
| 5527580 |
Rubber stopper for vials |
Jun. 18, 1996 |
| 5413563 |
Pre-filled syringe having a plunger, plunger insert and plunger rod |
May. 9, 1995 |
| 5397313 |
Low friction syringe |
Mar. 14, 1995 |
| 5354286 |
Injection device having polyparaxylylene coated container |
Oct. 11, 1994 |
| 5338312 |
Article having multi-layered lubricant and method therefor |
Aug. 16, 1994 |
| 5290228 |
Two-compartment syringe |
Mar. 1, 1994 |
| 5185408 |
Medical devices fabricated totally or in part from copolymers of recurring units derived from cyclic carbonates and lactides |
Feb. 9, 1993 |
| 5147328 |
Syringe assembly |
Sep. 15, 1992 |
| 5009646 |
Sliding stopper for a syringe |
Apr. 23, 1991 |
| 4997423 |
Laminated sliding stopper for a syringe |
Mar. 5, 1991 |
| 4820278 |
Non-contaminating renewable syringe |
Apr. 11, 1989 |
| 4813937 |
Ambulatory disposable infusion delivery system |
Mar. 21, 1989 |
| 4767414 |
Ionizing plasma lubricant method |
Aug. 30, 1988 |
| 4633765 |
Piston for precision dosing instrument |
Jan. 6, 1987 |
| 4623330 |
Gas diffusion-limited controlled release devices |
Nov. 18, 1986 |
| 4501192 |
Piston for precision dosing instrument |
Feb. 26, 1985 |
| 4500310 |
Variable sealing pressure plunger rod assembly |
Feb. 19, 1985 |
| 4492634 |
Pre-evacuated blood collection tube with anti-hemolysis baffle system and centrifugation propelled filtration disc and efficient serum-from cells separator |
Jan. 8, 1985 |
| 4450079 |
Cassette for providing a controlled flow of fluid |
May. 22, 1984 |
| 4281653 |
Combined ampule-oneway injection syringe |
Aug. 4, 1981 |
| 4096070 |
Blood filter |
Jun. 20, 1978 |
| 4089335 |
Microsyringe |
May. 16, 1978 |
| 4074715 |
Syringe plunger |
Feb. 21, 1978 |
| 4004718 |
Syringes |
Jan. 25, 1977 |
| 3958570 |
Syringes and syringe capsules |
May. 25, 1976 |
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