Method and apparatus for delivering a drug
First Claim
1. A hand piece for delivering a drug comprising:
- a core having a proximal portion and a distal portion, wherein the core comprises;
a thumb piece associated with the proximal portion, anda needle assembly in the distal portion comprising a needle;
a sheath adapted to move over the core with a first configuration substantially covering the needle portion and a second configuration with the needle extending from the hand piece in a distal direction;
a fluid connection within the core connecting the needle assembly with a fluid conduit extending from the core.
1 Assignment
0 Petitions
Accused Products
Abstract
A device to facilitate the administration of an injection to a patient can comprise a hand piece that comprises of a core and a sheath. The core can comprise of a needle assembly and a thumb piece, and the sheath can enclose a portion of the core, at least in some configurations. In some embodiments, the hand piece can comprise of at least one releasable locking mechanism to enable the sheath to lock onto the core in different positions, particularly a safe position in which the needle assembly is enclosed within the sheath and an exposed position in which the needle is exposed from the sheath. A fluid connection within the core connects the needle assembly with a fluid source outside the core. The user can grip the hand piece by supporting their thumb on the thumb piece and positioning the hand piece between the user'"'"'s two non-thumb fingers. Thus, the user can employ a traditional one-hand grip corresponding to the use of a manual dental syringe. To unlock the sheath of the hand piece, one of the user'"'"'s non-thumb fingers can be positioned near the locking mechanism to provide ready release of the locking mechanism such that movement of the sheath relative to the needle assembly can occur to expose the needle for an injection into the patient. After delivery of a drug, the sheath can be moved to enclose the needle for later use or disposal.
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Citations
24 Claims
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1. A hand piece for delivering a drug comprising:
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a core having a proximal portion and a distal portion, wherein the core comprises; a thumb piece associated with the proximal portion, and a needle assembly in the distal portion comprising a needle; a sheath adapted to move over the core with a first configuration substantially covering the needle portion and a second configuration with the needle extending from the hand piece in a distal direction; a fluid connection within the core connecting the needle assembly with a fluid conduit extending from the core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for delivering a drug using a hand piece comprising a core comprising a needle assembly, a sheath adapted to engage with the core, and a fluid connection within the core connecting the needle assembly with a fluid source outside the core, the method comprising:
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moving the sheath relative to the needle assembly from a safe position to a ready position, wherein the needle assembly is substantially enclosed within the sheath in the safe position and the needle assembly is exposed from the sheath in the ready position; and injecting fluid from the fluid source into the tissue of a patient. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A method for handling a hand piece in a tripod grip comprising a core comprising a needle assembly and a thumb piece, a sheath enclosing the core, and a fluid connection within the core connecting the needle assembly with a fluid source outside the core, the method comprising:
injecting a drug into a patient using the hand piece, the injection being performed while supporting the user'"'"'s thumb on the thumb piece and with the hand piece between the user'"'"'s two non-thumb fingers. - View Dependent Claims (22, 23, 24)
Specification