# US 5,700,246 A · Holder for cartridge-needle unit

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- Number: US 5,700,246 A
- Document ID: US5700246A
- Status: Granted
- Kind: A
- Application number: 08/722,885
- Filed: 1996-09-26
- Granted: 1997-12-23
- Earliest claimed: 1993-09-29
- Assignees: Abbott Laboratories
- Inventors: Mark A. Stiehl; William A. Bergstresser; John J. Niedospial
- Web page: https://patentgrep.com/patent/US5700246A

## CPC

- A61M 5/24: Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or cartridges, e.g. automatic
- A61M 5/31511: {Piston or piston-rod constructions, e.g. connection of piston with piston-rod (A61M5/5066 takes precedence)}
- 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)}
- A61M 5/31515: {Connection of piston with piston rod}
- A61M 5/50: having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile {(retractable needles or needle protectors with means for preventing re-use A61M5/321)}
- A61M 2005/2407: {from the rear}
- A61M 2005/247: {with fixed or steady piercing means, e.g. piercing under movement of ampoule}
- A61M 2005/31518: {designed to reduce the overall size of an injection device, e.g. using flexible or pivotally connected chain-like rod members}
- A61M 2005/3246: {being squeezably deformable for locking or unlocking purposes, e.g. with elliptical cross-section}
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

This invention relates to a holder for use in combination with a pre-filled cartridge-needle unit, the holder comprising a hollow body sized for housing the cartridge-needle unit therein, and provision for allowing the body to move axially relative to the cartridge-needle unit. In one preferred embodiment, the distal end of the body is elliptical in cross section and the proximal end of the body is circular in cross section. In another preferred embodiment, the body comprises a pair of cam slots at the distal end and a pair or retaining slots at the proximal end, the slots being sized to accept a circumferential ring on the cartridge-needle unit and positioned to hold the cartridge-needle units in use and safe positions. The holder is easier to use and manufacture and reduces the susceptibility of health care workers to accidental needle strikes.

## Claims

### Claim 1

A holder for use in combination with a pre-filled cartridge-needle unit having a circumferential ring, said holder comprising:
a hollow body sized for housing the cartridge-needle unit therein having proximal and distal ends, said body comprising a pair of squeeze pads disposed on the distal end thereof; and
means for permitting the body to move axially relative to the cartridge-needle unit between use and safe positions;
the improvement wherein said body comprises a pair of cam slots at the distal end thereof and a pair of retaining slots at the proximal end thereof, said slots being sized to accept said circumferential ring and positioned to hold said cartridge-needle unit in use and safe positions
and wherein the distal end of said body is elliptical in cross section, said ellipse having a major axis substantially longer than its minor axis and the proximal end of said body is circular in cross section and said body is tapered from said distal elliptical end to said proximal circular end.

### Claim 2 (depends on 1)

The holder of claim 1 wherein said body comprises an axial groove to facilitate retraction.

### Claim 3 (depends on 1)

The holder of claim 1 further comprising retraction finger guards disposed on said hollow body approximately midway between said proximal and distal ends.