Hypodermic syringe with foam sponge reservoir

• US 5,267,974 A
• Filed: 06/04/1992
• Issued: 12/07/1993
• Est. Priority Date: 06/04/1992
• Status: Expired due to Fees

• Current Assignee: William S. Lambert
• Original Assignee: William S. Lambert
• Inventors: Lambert, William S.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): MCDERMOTT, CORRINE MARIE
• Application Number:
  US07/893,526
• Time in Patent Office: 551 Days
• Field of Search: 604/192, 604/195, 604/197-199, 604/212-216, 604/239
• US Class Current: 604/195
• CPC Class Codes: A61M 5/001 Apparatus specially adapted for cleaning or sterilising syringes or needles
• CPC Class Codes: A61M 5/282 by compression of deformable ampoule or carpule wall
• 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

Abstract

A safely-disposable, one-use limited, sealingly-enveloped, injectant-saturated, elastic foam sponge, axially encompassing a hypodermic cannula, depressably slidable there-thru for simultaneous, subcutaneous tissue injection.

Claims

1. A dosage-dimensionable, composite, safely disposable, self-injectable hypodermic syringe, comprising:

a minimally thin-skinned, hermetically sealable, resilient film-envelope, precisely formulated self-healingly, to effect a radially-contracting, transverse, liquid seal around the periphery of an axially penetratable cannula;

a cylindrical, injectant-saturated, absorbingly open-celled, reconformably collapsible, elastic, semi-rigid foam sponge reservoir media, having opposing outermost and discharge endwalls, comprehensively enclosed by said film-envelope; and

an axially penetratable cannula comprised of a needle body having a disc-butted end and a sharp-pointed end opposite one another, and a strategically placed side-vented discharge inlet perforation within the needle body, said cannula proportionally and centrically disposed internally of said foam sponge;

whereby said syringe facilitates an outermost endwall to discharge endwall, wholly maximal, axial compression there in between, compelling said needle to slidably penetrate projectedly there through to immediate tissue implantation per resultant simultaneous, thru-needle conductive total discharge of the injectant content.

2. The invention of claim 1 further comprising a snugly-constrictive finger ring having opposing ends which are fused to the periphery of the outermost endwall surface to facilitate digitally-engaged manipulation of the instant device.

3. The invention of claim 1 further comprising an antiseptic-impregnated, mucilaginous media contactively adhered to the surface of the discharge endwall to topically disseminate said antiseptic upon semi-adherable, epidermally contactive exposure, and having a stripable evaporation preventive cover film seal overlaying said mucilaginous media.