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US 5,376,082 AGranted
Needle device
OwnerDavid Y. Phelpsinventor
Life of this patent
Estimating the term…
Abstract
A needle device for the delivery of medicaments, insuflation or other medical devices, having a reciprocable needle sensitive to lack of resistance, whereupon such needle retracts, permitting a cannula therewith to provide access to the penetrated body.
Claims14
A needle device for the delivery of medical devices, insuflation or medicaments, comprising:
- a housing;
- a reciprocable hollow needle arranged in a cannula, said cannula attached to the distal end of said housing;
- a valve arrangement disposed about said hollow needle at the proximal end of said cannula, arranged to be closable upon the retraction of said reciprocable hollow needle from said cannula;
- and
- an arrangement of compressable and releasable springs disposed within said housing and attached to said hollow needle so as to bias said hollow needle therefrom.
2 more elements
A needle device for delivery of medical devices, insuflation, or medicaments, comprising:
- a housing:
- a reciprocable hollow needle having a proximal end and a distal end with a lumen therebetween, said proximal end secured within said housing;
- a cannula having a bore containing said needle, said cannula having a proximal end and a distal end, said cannula having a valve arrangement on its proximal end, said proximal end being attached to the distal end of said housing;
- said valve arrangement having a valve means pivotably disposed between an open position in coaxial alignment with said bore of said cannula and a closed position wherein said valve member closes off said bore of said cannula;
- and a cap and a base are arranged at the proximal end of said cannula, each having a bore therethrough in alignment with said bore therein, whereby rotation of said cap with respect to said base after said needle is withdrawn from said cannula, effectuates pivotal motion of said valve to close off said bore.
2 more elements
A needle device for accessing an internal body space, comprising:
- an elongated housing having a distal and a proximal end;
- a cannula arranged on the distal end of said housing;
- a needle reciprocably movable within said housing and said cannula, and retractable from said cannula;
- a hub arranged at the proximal end of said cannula by which said cannula is attached to said housing, said hub having a bore extending therethrough, and into said cannula, for receipt of said needle therethrough;
- a valve for opening and closing the proximal end of the bore of said cannula when said needle is withdrawn therefrom;
- and
- wherein said hub is comprised of a cap and a base which are coaxial with one another and are rotatable with respect to one another, which rotation effects a pivoting of a valve across said bore in the absence of a needle therein.
4 more elements
Dependencies are inferred from the claim text.