Syringe cartridge

• US 4,673,396 A
• Filed: 06/13/1984
• Issued: 06/16/1987
• Est. Priority Date: 11/22/1982
• Status: Expired due to Fees

• Current Assignee: Baxter International Inc.
• Original Assignee: Baxter Travenol Laboratories Incorporated
• Inventors: Urbaniak, Ray
• Primary Examiner(s): Pellegrino, Stephen C.
• Application Number:
  US06/648,234
• Time in Patent Office: 1,098 Days
• Field of Search: 604/218, 604/199-205, 604/208, 604/211, 604/212, 604/236, 604/238, 604/240, 604/244, 604/224
• US Class Current: 604/211
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150213 Venting means
• 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 5/150351 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 5/150572 Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
• CPC Class Codes: A61M 2005/3103 Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle
• CPC Class Codes: A61M 2005/3104 Caps for syringes without needle
• CPC Class Codes: A61M 2005/3106 Plugs for syringes without needle
• CPC Class Codes: A61M 2205/192 Avoiding coring, e.g. preventing formation of particles during puncture
• CPC Class Codes: A61M 5/285 with sealing means to be broken or opened
• 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 5/34 Constructions for connecting the needle , e.g. to syringe nozzle or needle hub connecting catheter tubes to hubs A61M25/0014
• CPC Class Codes: B65B 3/003 Filling medical containers such as ampoules, vials, syringes or the like

Abstract

The invention provides an apparatus which includes a syringe cartridge (10) having its open lower portion closed by a plunger piston (14). The upper portion is closed by a syringe cartridge closure (15) having a leur tip cap (50). Structure is optionally provided interiorly of the tip cap to retain a hollow needle (40), which is held in position by a leur tip (34), the latter being vented and provided with a seal for the needle. A displacement dome (38) is provided at the lower portion of the syringe cartridge closure (15) to displace a minor amount of fluid upon closure to seal the cartridge, and insure zero head space. The piston plunger (14) at the lower portion of the cartridge can be advanced, desirably by a second plunger (61), to empty the contents. Upon resealing, the leur tip cap (50) is applied over the leur tip (34) after a bead is formed on the tip. The tip cap (50) then penetrates the leur tip (34), or optionally the interior of the hollow needle (40) thus completely reclosing the cartridge and sealing the same for storage until intended for further use. Optionally, a metering screw plunger system (85,90,95,96) may be employed.

Claims

1. A syringe comprising, in combination:

a cylindrical cartridge having two open ends,

a movable plunger means for closing one end of the cartridge,

a first closure means for the other end of the cartridge for displacement of product within the cartridge to achieve a predetermined head space therein,

a second closure means removably secured to said first closure means,

said second closure means having reseal means interacting with said first closure means to reseal with predetermined head space by displacing a portion of product in the first closure means,

a screw plunger adapter applied at the lower portion of the cartridge, and

a metering screw plunger adapted to engage the screw plunger adapter,

whereby the technician may rotate the threaded metering screw plunger to advance the movable plunger means and, with precision, meter the contents for removal through the hollow bore of the needle.

2. A syringe cartridge comprising, in combination:

a cartridge of elongate cylindrical configuration having two open ends,

a plunger piston sealing the lower open end of said cartridge,

a means for advancing the plunger piston,

a syringe cartridge closure secured to the upper open end of the cartridge,

a leur tip having a dispensing end extending from said closure,

a leur tip cap proportioned to reclosably cover the dispensing end of the leur tip,

a leur tip bore centrally and longitudinally of the leur tip,

a diaphragm at the lower portion of said leur tip bore and closing the same to contents of the cartridge,

an inverted dome at the lower portion of the closure defining a predetermined head space relationship between the closure, cartridge, and contents,

the leur tip cap being porportioned for positioning over the leur tip,

a plunger shaft for engaging the plunger piston and forceably ejecting the contents of the cartridge through the hollow bore in the needle,

a second plunger adapter positoned at the lower portion of the cartridge,

a plunger metering screw, said plunger metering screw being threadally engaged with the screw plunger adapter,

whereby the technician may threadally rotate the metering screw plunger and, with precision, meter the contents.