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1. WO2000027450 - PRE-FILLED RETRACTABLE NEEDLE INJECTION DEVICE

Publication Number WO/2000/027450
Publication Date 18.05.2000
International Application No. PCT/US1999/026208
International Filing Date 05.11.1999
Chapter 2 Demand Filed 05.06.2000
IPC
A61M 5/315 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests
178Syringes
31Details
315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod; Appliances on the rod for facilitating dosing
A61M 5/32 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests
178Syringes
31Details
32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
CPC
A61M 2005/31508
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
178Syringes
31Details
315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod ; or piston; Appliances on the rod for facilitating dosing ; ; Dosing mechanisms
31501Means for blocking or restricting the movement of the rod or piston
31508provided on the piston-rod
A61M 2005/3231
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
178Syringes
31Details
32Needles; Details of needles pertaining to their connection with syringe or hub
3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
321Means for protection against accidental injuries by used needles
322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
3221Constructional features thereof, e.g. to improve manipulation or functioning
3231Proximal end of needle captured or embedded inside piston head, e.g. by friction or hooks
A61M 5/3234
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
178Syringes
31Details
32Needles; Details of needles pertaining to their connection with syringe or hub
3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
321Means for protection against accidental injuries by used needles
322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
3234Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
Applicants
  • MDC INVESTMENT HOLDINGS, INC. [US]/[US] (AllExceptUS)
  • HALSETH, Thor [US]/[US] (UsOnly)
  • BOTICH, Michael [US]/[US] (UsOnly)
Inventors
  • HALSETH, Thor
  • BOTICH, Michael
Agents
  • ELAND, Stephen
Priority Data
60/107,42206.11.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PRE-FILLED RETRACTABLE NEEDLE INJECTION DEVICE
(FR) DISPOSITIF D'INJECTION A AIGUILLE RETRACTABLE PREREMPLIE
Abstract
(EN)
A safety needle-bearing medical device (10) is provided. After use the needle (50) is retracted into the housing (20) of the device to prevent inadvertent contact with the contaminated needle. The invention provides a syringe having a retractable needle. At the end of the injection stroke, the plunger (30) engages a needle retainer that releasably retains the needle. The needle (50) is then released, and a biasing element (60) biases the needle rearwardly. In a preferred embodiment, the needle retainer comprises an adhesive (65) having sufficient strength to retain the needle (50) against the bias of the biasing element (60) prior to actuation of retraction. In addition, the bond of the adhesive (65) is sufficiently fracturable to allow release of the needle upon application of the actuation forced by the plunger (30).
(FR)
L'invention concerne un dispositif médical à aiguille (10) sûr. Après utilisation, l'aiguille (50) est rétractée dans le boîtier (20) du dispositif pour empêcher tout contact par inadvertence avec l'aiguille contaminée. L'invention concerne en outre une seringue à aiguille rétractable. En fin d'injection, le plongeur (30) sollicite un système de retenue d'aiguille qui retient l'aiguille de façon libérable. L'aiguille (50) est ensuite libérée, et un élément de contrainte (60) sollicite l'aiguille vers l'arrière. En mode de réalisation préféré, le système de retenue comprend un adhésif (65) exerçant une force suffisante pour retenir l'aiguille (50) contre la sollicitation de l'élément de contrainte (60), avant l'engagement de la rétraction. Par ailleurs, la retenue de l'adhésif (65) est suffisamment friable pour permettre la libération de l'aiguille lorsque la force d'engagement du plongeur (30) s'exerce.
Also published as
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