Needle retraction apparatus

Patent metadata

Field	Value
Publication number	US-9308353-B2
Application number	US-201313841462-A
Country	US
Kind code	B2
Filing date	Mar 15, 2013
Priority date	Jul 29, 2010
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

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.

First claim

The invention claimed is:

1. 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.

2. 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.

3. 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.

4. The needle retraction apparatus of claim 3 wherein the needle retraction tube has an elongate portion with a closed end that is receivable through the second opening.

5. 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.

6. 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.

7. 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.

8. 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.

9. 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.

10. 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.

Assignees

• Retractable Technologies Inc
• Shaw Thomas J

Inventors

• Shaw Thomas J
• Small Mark
• Zhu Ni

Classifications

• A61M25/0693

  Flashback chambers · CPC title

• A61M25/0631 Primary

  having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle · CPC title