IP Library › Granted Patent US 9,308,353
Granted Patent B2
US 9,308,353 · App. 13/841,462 · Granted Apr 12, 2016

Needle retraction apparatus

Inventors: Thomas J Shaw (Frisco, TX); Mark Small (Heavener, OK); Ni Zhu (Plano, TX)
Assignee: Retractable Technologies, INC.
A61M25/0631A61M25/0693
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Quick Facts
Patent No.
US 9,308,353
App. No.
13/841,462
Granted
Apr 12, 2016
Kind
B2
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.

Claims (30)

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.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 17, 2013
From: SMALL, MARK; ZHU, NI
To: RETRACTABLE TECHNOLOGIES, INC.
Reel/Frame 030627/0623 →
Continuity (3)
Continuation In Part 12846402 · Jul 29, 2010
Provisional Application 61737263 · Dec 14, 2012
Related Publication 20140276435A1 · Sep 18, 2014