Needle cover
First Claim
1. A single-use protective cover, comprising:
- a housing generally surrounding a needle and configured to connect to a syringe, the needle comprising a central longitudinal axis;
a sleeve configured to move in a first stage with respect to the housing between an extended position and a retracted position substantially without impediment, the sleeve comprising a needle aperture and a needle channel extending axially along the sleeve and configured to receive the needle such that a distal tip of the needle is covered by the sleeve in the extended position and is exposed in the retracted position;
a biasing member configured to bias the sleeve toward the extended position; and
a locking member comprising a central longitudinal axis that is radially offset from the central longitudinal axis of the needle when the sleeve is in the retracted and extended positions;
wherein a distal end of the sleeve is substantially flush with a distal end of the housing when the sleeve is in the retracted position; and
wherein the locking member engages, with an engagement, the sleeve in a second stage as the sleeve moves from the retracted position to the extended position, wherein the engagement between the locking member and the sleeve occurs distal to a proximal-most end of the sleeve and comprises resiliently deflecting the locking member with the sleeve, and wherein the engagement obstructs the sleeve from moving to the retracted position to thereby inhibit reuse of the protective cover.
1 Assignment
0 Petitions
Accused Products
Abstract
A single-use cover assembly that obscures a substantial majority or an entirety of an injection needle from view before, during, and after an injection procedure. The cover assembly includes a housing and a needle sleeve that retracts and extends by sliding axially within the housing. The needle sleeve carries a locking collar that moves from a first position to a second position once the needle sleeve is fully retracted. In the first position the locking collar allows retraction of the needle sleeve from a fully extended position. In the second position, a portion of the locking collar covers a tip of the needle, thereby preventing retraction of the needle sleeve from the fully extended position.
269 Citations
20 Claims
-
1. A single-use protective cover, comprising:
-
a housing generally surrounding a needle and configured to connect to a syringe, the needle comprising a central longitudinal axis; a sleeve configured to move in a first stage with respect to the housing between an extended position and a retracted position substantially without impediment, the sleeve comprising a needle aperture and a needle channel extending axially along the sleeve and configured to receive the needle such that a distal tip of the needle is covered by the sleeve in the extended position and is exposed in the retracted position; a biasing member configured to bias the sleeve toward the extended position; and a locking member comprising a central longitudinal axis that is radially offset from the central longitudinal axis of the needle when the sleeve is in the retracted and extended positions; wherein a distal end of the sleeve is substantially flush with a distal end of the housing when the sleeve is in the retracted position; and wherein the locking member engages, with an engagement, the sleeve in a second stage as the sleeve moves from the retracted position to the extended position, wherein the engagement between the locking member and the sleeve occurs distal to a proximal-most end of the sleeve and comprises resiliently deflecting the locking member with the sleeve, and wherein the engagement obstructs the sleeve from moving to the retracted position to thereby inhibit reuse of the protective cover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification