Sterilized safety syringe

• US 7,393,345 B2
• Filed: 07/18/2003
• Issued: 07/01/2008
• Est. Priority Date: 07/18/2003
• Status: Expired due to Fees

• Current Assignee: Chang-Ming Yang
• Original Assignee: Chang-Ming Yang
• Inventors: Yang, Chang-Ming
• Primary Examiner(s): Lucchesi; Nicholas D.
• Assistant Examiner(s): KOHARSKI, CHRISTOPHER
• Application Number:
  US10/621,331
• Publication Number:
  US 20050015055A1
• Time in Patent Office: 1,810 Days
• Field of Search: 604/198, 604/199, 604/111, 604/195, 604/182, 604/192, 604/187, 604/141, 604/236, 222/334, 222/389
• US Class Current: 604/199
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150229 Pumps for assisting the blood sampling
• CPC Class Codes: A61B 5/150236 Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood
• CPC Class Codes: A61B 5/150244 Rods for actuating or driving the piston, i.e. the cylindrical body that sits inside the syringe barrel, typically with an air tight seal, and slides in the barrel to create a vacuum or to expel blood
• CPC Class Codes: A61B 5/150351 Caps, stoppers or lids for sealing or closing a blood collection vessel or container, e.g. a test-tube or syringe barrel caps for bottles or containers in general B65D41/00
• CPC Class Codes: A61B 5/150389 Hollow piercing elements, e.g. canulas, needles, for piercing the skin
• CPC Class Codes: A61B 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/150656 semi-automatically triggered, i.e. in which the triggering of the protective sleeve requires a deliberate action by the user, e.g. manual release of spring-biased extension means
• CPC Class Codes: A61B 5/150694 Procedure for removing protection means at the time of piercing
• CPC Class Codes: A61B 5/150717 manually removed
• CPC Class Codes: A61B 5/150916 by blocking components, e.g. piston, driving device or fluid passageway
• CPC Class Codes: A61B 5/154 Devices using pre-evacuated means
• CPC Class Codes: A61M 2005/206 With automatic needle insertion
• CPC Class Codes: A61M 2005/311 Plugs, i.e. sealing rods or stylets closing the bore of needles
• CPC Class Codes: A61M 2005/3247 Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 5/001 Apparatus specially adapted for cleaning or sterilising syringes or needles
• CPC Class Codes: A61M 5/2053 Media being expelled from injector by pressurised fluid or vacuum for infusion A61M5/145, A61M5/155
• CPC Class Codes: A61M 5/31511 Piston or piston-rod constructions, e.g. connection of piston with piston-rod A61M5/5066 takes precedence
• CPC Class Codes: A61M 5/3243 being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel devices for protecting guide needles in combination with catheters A61M25/0612
• CPC Class Codes: A61M 5/326 : Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
• CPC Class Codes: A61M 5/3272 : having projections following labyrinth paths

Abstract

A sterilized safety syringe including a syringe tube, a protective cover, a sterilizer, and an air compressor. The protective cover is slid into a guide slot of the syringe tube with several sliding plates whose rear ends are are in close contact with the wall of the guide slot. The syringe tube is equipped with several air conducting pipes which are connected with corresponding air feeding pipes of an air compressor. A plug is formed at the rear end of the sterilizer which is plugged into a drilled hole formed on the protective cover.

Claims

1. A sterilized safety syringe which is coupled with an air compressor using air feeding pipes for infusing drugs into the patient'"'"'s body or extracting body fluid therefrom, comprising:

a syringe tube having a tip, an inner wall, an outer surface and an injection needle inserted at said tip, the inner wall of said tube defining a cavity and a guide slot formed between the outer surface and the inner wall of said syringe tube, said guide slot passing through a front wall surface of said syringe tube, and having a protrusion at a front end thereof,

a plunger provided in said cavity and in close contact with the inner wall surface of said cavity, a rear end of said syringe tube being in a sealed state wherein said cavity and said guide slot are coupled with a plurality of air feeding pipes of said air compressor via an air conducting pipe;

a protective cover having a drilled hole at a front end thereof and the protective cover provided with a sliding plate at a rear end thereof, said sliding plate provided with a fixed part at a front portion thereof and an annular flange at its rear end;

wherein said annular flange has a check fitting formed at a front edge and wherein said protective cover is actuated by said air compressor via one of said air conducting pipes;

a sterilizer having a main body with a pallet formed at a front end thereof, and a sterilized cotton swab being affixed to said pallet, a film formed at the front end of said main body for sealing said pallet, while a rear end of said main body forms a plug;

wherein said sliding plate of said protective cover is fitted into said guide slot of said syringe tube and is forcibly in close contact with a wall of said guide slot with said annular flange;

wherein said plug formed at the rear end of said sterilizer is plugged into said drilled hole of said protective cover.

2. The sterilized safety syringe as in claim 1, wherein said main body of said sterilizer and said plug are formed of a soft rubber or plastic substance.