TORSION BAR-BASED CANNULA INSERTION DEVICE

• US 20080243051A1
• Filed: 04/27/2007
• Published: 10/02/2008
• Est. Priority Date: 03/30/2007
• Status: Abandoned Application

• Current Assignee: Animas Corporation (Johnson & Johnson)
• Original Assignee: Animas Corporation (Johnson & Johnson)
• Inventors: DeSTEFANO, Mark A.
• Application Number:
  US11/741,098
• Publication Number:
  US 20080243051A1
• Time in Patent Office: Days
• US Class Current: 604/27
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Abstract

A cannula insertion device for use with an insertion set includes an insertion module and a cannula insertion needle. The insertion module includes a housing with a distal end, a proximal end, and a torsion bar integrated into the proximal end. The cannula insertion needle is attached to the torsion bar. Moreover, the torsion bar is configured to releasably retain a cannula cartridge and an infuser base of the infusion set in operative alignment with the cannula insertion needle. The torsion bar is also moveable from a retracted position, wherein a cannula cartridge and an infuser base are releasably retained on the torsion bar and are completely within the housing opening, and an advanced position wherein a cannula of a cannula cartridge has been subcutaneously inserted into an infusion site by the cannula insertion needle.

Claims

1. A cannula insertion device for use with an insertion set, the insertion set including an infuser base and a cannula cartridge, the cannula insertion device comprising:

an insertion module including;

a housing with;

a housing distal end;

a housing proximal end; and

a housing opening extending from the housing distal end to the housing proximal end; and

a torsion bar integrated into the housing proximal end; and

a cannula insertion needle attached to the torsion bar;

wherein the torsion bar is configured to releasably retain a cannula cartridge and an infuser base of the infusion set in operative alignment with the cannula insertion needle; and

wherein the torsion is moveable from a retracted position, wherein a cannula cartridge and an infuser base releasably retained on the torsion bar are completely within the housing opening and an advanced position wherein a cannula of a cannula cartridge has been subcutaneously inserted into an infusion site by the cannula insertion needle.

2. The cannula insertion device of claim 1 wherein the advanced position is obtained by user application of pressure to the torsion bar.

3. The cannula insertion device of claim 2 wherein removal of user application of pressure from the advanced position results in the automatic withdrawal of the cannula insertion needle from the infusion site.

4. The cannula insertion device of claim 1 wherein the housing is dome-shaped.

5. The cannula insertion device of claim 1 wherein torsion bar is configured to releasable retain the cannula cartridge and infusion base via frictional engagement between the cannula insertion needle and the cannula cartridge.