Syringe apparatus

• US 5,695,475 A
• Filed: 12/13/1995
• Issued: 12/09/1997
• Est. Priority Date: 12/13/1995
• Status: Expired due to Fees

• Current Assignee: Best, Lester Jr., Henry Boyd III
• Original Assignee: Best, Lester Jr., Henry Boyd III
• Inventors: Best, Lester Jr., Boyd, Henry III
• Primary Examiner(s): McDermott, Corrine M.
• Assistant Examiner(s): STRIGHT, RONALD K
• Application Number:
  US08/571,452
• Time in Patent Office: 727 Days
• Field of Search: 128/760, 128/763, 128/764-766, 128/912, 128/919, 604/115, 604/181, 604/187, 604/190, 604/191, 604/192, 604/198, 604/110, 604/218, 604/195, 604/197, 604/263, 604/200, 604/201, 604/204-206, 604/232, 604/244, 604/88 , 604/82, 604/87, 604/56
• US Class Current: 604/198
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150389 Hollow piercing elements, e.g. canulas, needles, for piercing the skin
• CPC Class Codes: A61B 5/150473 Double-ended needles, e.g. used with pre-evacuated sampling tubes 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 5/150633 Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
• CPC Class Codes: A61B 5/150717 manually removed
• CPC Class Codes: A61B 5/150732 Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube,
• CPC Class Codes: A61B 5/150992 Blood sampling from a fluid line external to a patient, such as a catheter line, combined with an infusion line; blood sampling from indwelling needle sets, e.g. sealable ports, luer couplings, valves tubing connectors and couplings A61M39/00
• CPC Class Codes: A61B 5/154 Devices using pre-evacuated means
• CPC Class Codes: A61M 5/1782 Devices aiding filling of syringes in situ combination of a vial and a syringe for transferring or mixing their contents A61J1/2096, filling of medical containers in general B65B3/003
• CPC Class Codes: A61M 5/204 connected to external reservoirs for multiple refilling
• CPC Class Codes: A61M 5/3129 Syringe barrels A61M5/3205 and A61M5/50 take 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 5/3257 Semi-automatic sleeve extension, i.e. in which triggering of the sleeve extension requires a deliberate action by the user, e.g. manual release of spring-biased extension means
• CPC Class Codes: A61M 5/3271 with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position
• CPC Class Codes: A61M 5/3272 having projections following labyrinth paths
• CPC Class Codes: Y10S 128/919 Syringe, means to protect user

Abstract

Syringe apparatus is provided which can be used in multiple ways such as injecting patients with various medications, taking blood samples, or in IV (intravenous) applications. The apparatus includes an outer sleeve slidably positioned over an inner sleeve which includes a penetrable member thereon. The penetrable member allows needle injection of a fluid from another syringe into the inner sleeve. One embodiment of the apparatus has a single pointed needle attached to the inner sleeve and a second embodiment has a double pointed needle for use in blood collection or the like. The syringe apparatus has a built-in safety feature by the use of a coiled spring which causes the needle to retract within the outer sleeve when released to prevent accidental needle puncture.

Claims

1. Syringe apparatus comprising:

an outer sleeve, an inner sleeve, said inner sleeve slidably positioned within said outer sleeve, a penetrable projection, said penetrable projection attached to said inner sleeve, said outer sleeve including a slot, said penetrable projection receivable within said slot;

a needle attached to said inner sleeve, said outer sleeve having a distal end defining a needle egress, a resilient member, said resilient member attached to said inner sleeve and to said outer sleeve distal end, said resilient member disposed between said inner and outer sleeves, said needle extendable from within said outer sleeve through said egress, and said needle retractable through said egress by said resilient member.

2. Syringe apparatus as claimed in claim 1 wherein said outer sleeve slot is a C-shaped locking slot.

3. Syringe apparatus as claimed in claim 2 wherein said locking slot comprises a foot.

4. Syringe apparatus as claimed in claim 1 and including a syringe, said syringe for positioning within said inner sleeve in fluid communication with said needle.

5. Syringe apparatus as claimed in claim 4 wherein said syringe comprises a fluid receptacle, a fluid receptacle penetrable member, said fluid receptacle penetrable member positioned on said fluid receptacle.

6. Syringe apparatus as claimed in claim 1 and including a plunger located within the inner sleeve, said plunger having a proximal end and a distal end, said distal end defining a needle receptacle.

7. Syringe apparatus as claimed in claim 6 wherein said needle receptacle is elongated.

8. Syringe apparatus as claimed in claim 1 and including a blood vial, said blood vial in fluid communication with said needle.

9. Syringe apparatus as claimed in claim 1 and including an IV assembly, said IV assembly for attachment to said needle.

10. Syringe apparatus as claimed in claim 1 wherein said needle comprises a dual pointed needle.

11. Syringe apparatus as claimed in claim 1 wherein said needle comprises a single pointed needle.