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Class Information
Number: 604/220
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 preventing accidental displacement of piston
Description: Subject matter including means located on either the piston or the syringe which acts to limit or prevent accidental movement of the piston relative to its housing.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7601140 |
Syringe pressure applicator |
Oct. 13, 2009 |
| 7361162 |
Medicinal syringe with piston stopper withdrawal and rotation-limiting means |
Apr. 22, 2008 |
| 7337538 |
Methods and apparatuses for joining a pumping cartridge to a pump drive |
Mar. 4, 2008 |
| 6991618 |
Single use syringe and plunger rod locking device therefor |
Jan. 31, 2006 |
| 6913592 |
Low cost disposable needleless injector system for variable and fixed dose applications |
Jul. 5, 2005 |
| 6824529 |
Pre-filled drug-delivery device and method of manufacture and assembly of same |
Nov. 30, 2004 |
| 6821266 |
Syringe |
Nov. 23, 2004 |
| 6808512 |
Safety syringe |
Oct. 26, 2004 |
| 6800071 |
Fluid reservoir piston |
Oct. 5, 2004 |
| 6767335 |
Syringe of single-use type intended for injection or lab tests |
Jul. 27, 2004 |
| 6736794 |
Method and device to protect syringes and similar medical instruments |
May. 18, 2004 |
| 6719735 |
Syringe adapter |
Apr. 13, 2004 |
| 6701976 |
Jig for injecting fixed amount of insulin and manufacturing method thereof |
Mar. 9, 2004 |
| 6669672 |
One-handed hypodermic syringe |
Dec. 30, 2003 |
| 6652493 |
Infusion pump syringe |
Nov. 25, 2003 |
| 6616640 |
Syringe with plunger anti-detachment mechanism |
Sep. 9, 2003 |
| 6613024 |
Single hand controlled dosage syringe |
Sep. 2, 2003 |
| 6610029 |
Needle-less injecting device |
Aug. 26, 2003 |
| 6582407 |
Structural safety design for the prevention of mis-pressing plunger rod into syringe |
Jun. 24, 2003 |
| 6544233 |
Pre-filled syringe |
Apr. 8, 2003 |
| 6533756 |
Single use syringe |
Mar. 18, 2003 |
| 6530903 |
Safety syringe |
Mar. 11, 2003 |
| 6527749 |
Two component dispenser system |
Mar. 4, 2003 |
| 6494863 |
One-use retracting syringe with positive needle retention |
Dec. 17, 2002 |
| 6468250 |
Dual-chamber safety hypodermic syringe |
Oct. 22, 2002 |
| 6371941 |
Prefilled syringe |
Apr. 16, 2002 |
| 6368306 |
Syringes |
Apr. 9, 2002 |
| 6221046 |
Recyclable medication dispensing device |
Apr. 24, 2001 |
| 6206859 |
Self-aligning plunger rod |
Mar. 27, 2001 |
| 6190363 |
Self-aligning plunger rod |
Feb. 20, 2001 |
| 6190362 |
Plunger rod |
Feb. 20, 2001 |
| 6165153 |
Single use syringe device |
Dec. 26, 2000 |
| 6142978 |
Self-aligning plunger rod |
Nov. 7, 2000 |
| 6123688 |
Pre-filled retractable needle injection devices |
Sep. 26, 2000 |
| 6086568 |
Syringe plunger rod for retracting needle syringe |
Jul. 11, 2000 |
| 6077247 |
Injection devices |
Jun. 20, 2000 |
| 6024710 |
Blood collection tube closure for use with a needle holder |
Feb. 15, 2000 |
| 5964736 |
Livestock biological and vaccine handling system |
Oct. 12, 1999 |
| 5931813 |
Retractable and destructible safety syringe |
Aug. 3, 1999 |
| 5891052 |
Diagnostic syringe actuator device |
Apr. 6, 1999 |
| 5814017 |
Single use syringe device |
Sep. 29, 1998 |
| 5803918 |
Syringe for medicinal purposes |
Sep. 8, 1998 |
| 5788672 |
Hub for syringe, connecting structure of hub, syringe, piston, needle assembly unit, connecting structure between needle assembly unit and syringe, syringe assembly and method of assembling sy |
Aug. 4, 1998 |
| 5728073 |
Syringe |
Mar. 17, 1998 |
| 5700247 |
Backstop device for a flangeless syringe |
Dec. 23, 1997 |
| 5667495 |
Backstop device for a syringe |
Sep. 16, 1997 |
| 5658258 |
One piece disposable applicator |
Aug. 19, 1997 |
| 5651372 |
Biopsy syringe |
Jul. 29, 1997 |
| 5615772 |
Medication filled syringe equipment |
Apr. 1, 1997 |
| 5607399 |
Backstop device for a flangeless syringe |
Mar. 4, 1997 |
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