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US 5,514,111 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.
Claims5
A method of delivering a medical device, insuflation, or medicaments into a body space, comprising the steps of:
- advancing into a body space a needle device having a housing with a hollow needle at the distal end thereof said hollow needle arranged within a cannula;
- puncturing a body space by said hollow needle which extends distally beyond the distal end of said cannula;
- retracting said hollow needle proximally upon said hollow needle losing resistance to forward or distal advance in a body;
- removing said hollow needle and said housing from said cannula;
- closing a valve at the proximal end of said cannula to seal access to said body space;
- and
- rotating a cap and a base arranged at the proximal end of said cannula to effectuate pivotal motion of a valve member to open or close access to said body space thereby.
4 more elements
Dependencies are inferred from the claim text.