Needle retraction apparatus
AssigneeRetractable Technologies, Inc.
InventorsThomas J Shaw, Mark Small, Ni Zhu
Life of this patent
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Abstract
A needle retraction apparatus comprising a body having a forwardly projecting needle, a needle retraction mechanism seated inside the body and biasing the needle rearwardly relative to the body, a slide member attachable to the body and having an opening communicating with a needle retraction cavity projecting away from the body, and an actuator rotatable relative to the slide member to reposition the slide member from a first position preventing needle retraction to a second position permitting needle retraction. An IV catheter introducer comprising the subject needle retraction apparatus is also disclosed.
Claims10
A needle retraction apparatus comprising a body having a forwardly projecting needle, a needle retraction mechanism seated inside the body and biasing the needle rearwardly relative to the body, a slide member attached to the body and having an opening communicating with a needle retraction cavity projecting away from the body, and an actuator rotatable relative to the slide member to reposition the slide member from a first position preventing needle retraction to a second position permitting needle retraction;
- wherein the needle retraction mechanism comprises a needle holder seated inside the body;
- and
- wherein the slide member comprises two laterally spaced openings, each opening being coaxially alignable with the needle holder at different times by repositioning the slide member relative to the body.
A needle retraction apparatus comprising a body having a forwardly projecting needle, a needle retraction mechanism seated inside the body and biasing the needle rearwardly relative to the body, a slide member attached to the body and having an opening communicating with a needle retraction cavity projecting away from the body, and an actuator rotatable relative to the slide member to reposition the slide member from a first position preventing needle retraction to a second position permitting needle retraction;
- wherein a first opening in the slide member communicates with a flash chamber.
A needle retraction apparatus comprising a body a forwardly projecting needle, a needle retraction mechanism seated inside the body and biasing the needle rearwardly relative to the body, a slide member attached to the body and having an opening communicating with a needle retraction cavity projecting away from the body, and an actuator rotatable relative to the slide member to reposition the slide member from a first position preventing needle retraction to a second position permitting needle retraction;
- wherein a first opening in the slide member communicates with a flash chamber;
- and
- wherein a second opening in the slide member communicates with the needle retraction cavity.
A needle retraction apparatus comprising a body having a forwardly projecting needle, a needle retraction mechanism seated inside the body and biasing the needle rearwardly relative to the body, a slide member attached to the body and having an opening communicating with a needle retraction cavity projecting away from the body, and an actuator rotatable relative to the slide member to reposition the slide member from a first position preventing needle retraction to a second position permitting needle retraction;
- wherein the actuator is a needle retraction tube.
A needle retraction apparatus comprising a body having a forwardly projecting needle, a needle retraction mechanism seated inside the body and biasing the needle rearwardly relative to the body, a slide member attached to the body and having an opening communicating with a needle retraction cavity projecting away from the body, and an actuator rotatable relative to the slide member to reposition the slide member from a first position preventing needle retraction to a second position permitting needle retraction;
- wherein the actuator is a needle retraction tube;
- and
- wherein the retraction tube comprises a projecting lug that engages a positioning notch in the body.
A needle retraction apparatus comprising a body having a forwardly projecting needle, a needle retraction mechanism seated inside the body and biasing the needle rearwardly relative to the body, a slide member attached to the body and having an opening communicating with a needle retraction cavity projecting away from the body, and an actuator rotatable relative to the slide member to reposition the slide member from a first position preventing needle retraction to a second position permitting needle retraction;
- wherein the actuator is a needle retraction tube;
- and
- wherein the retraction tube comprises a projecting lug that engages a positioning notch in the body;
- and
- wherein rotation of the needle retraction tube repositions the slide member relative to the body.
A needle retraction apparatus comprising a body having a forwardly projecting needle, a needle retraction mechanism seated inside the body and biasing the needle rearwardly relative to the body, a slide member attached to the body and having an opening communicating with a needle retraction cavity projecting away from the body, and an actuator rotatable relative to the slide member to reposition the slide member from a first position preventing needle retraction to a second position permitting needle retraction;
- wherein a first opening in the slide member communicates with a flash chamber;
- and
- wherein the flash chamber has a closed end disposed opposite the first opening in the slide member.
A needle retraction apparatus comprising a body having a forwardly projecting needle, a needle retraction mechanism seated inside the body and biasing the needle rearwardly relative to the body, a slide member attached to the body and having an opening communicating with a needle retraction cavity projecting away from the body, and an actuator rotatable relative to the slide member to reposition the slide member from a first position preventing needle retraction to a second position permitting needle retraction;
- wherein a first opening in the slide member communicates with a flash chamber;
- and
- wherein the flash chamber has a closed end disposed opposite the first opening in the slide member;
- and
- wherein the closed end comprises an elastomeric plug.
A needle retraction apparatus comprising a body having a forwardly projecting needle, a needle retraction mechanism seated inside the body and biasing the needle rearwardly relative to the body, a slide member attached to the body and having an opening communicating with a needle retraction cavity projecting away from the body, and an actuator rotatable relative to the slide member to reposition the slide member from a first position preventing needle retraction to a second position permitting needle retraction;
- wherein a first opening in the slide member communicates with a flash chamber;
- and
- wherein the flash chamber has a closed end disposed opposite the first opening in the slide member;
- and
- wherein the closed end comprises an elastomeric plug;
- and
- wherein the elastomeric plug can be penetrated by a cannula to establish a fluid path through the closed end of the flash chamber.
Dependencies are inferred from the claim text.