Indwelling vein catheter with concentric puncture needle

• US 3,906,946 A
• Filed: 02/05/1974
• Issued: 09/23/1975
• Est. Priority Date: 02/07/1973
• Status: Expired due to Term

• Current Assignee: Cai Gustav Rabbe Nordstrom
• Original Assignee: Cai Gustav Rabbe Nordstrom
• Inventors: Nordstrom, Cai Gustav Rabbe
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/440,134
• Time in Patent Office: 595 Days
• Field of Search: 128/214.4,221,348,DIG.16
• US Class Current: 604/165.03
• CPC Class Codes: A61M 25/0637 Butterfly or winged devices, e.g. for facilitating handling or for attachment to the skin
• 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

An indwelling vein catheter assembly with concentric puncture needle and wing-like, laterally extending, flexible elements tangentially attached to the catheter body; these wing-like elements can be folded around the catheter body to form angularly offset gripping and guide means which assume safe and smooth insertion of the catheter into a vein, and in the unfolded position provide support and steadying means for the inserted catheter.

Claims

1. An indwelling vein catheter assembly comprising a catheter fitting, a catheter attached to and extending forwardly from said catheter fitting, a puncture needle holder attached to the rearward end of said catheter fitting, a puncture needle extending forwardly from said needle holder and concentrically through said catheter fitting and said catheter, and flexible, laterally extending wing elements attached to said catheter fitting, each of said wing elements comprising a relatively thick portion at the end thereof away from said catheter fitting and said relatively thick portion of said wing elements tapering off into a relatively thin portion, each of said thin portions being tangentially joined to the underside of said catheter fitting, said wing elements being adapted for symmetrically folding around opposite sides of said catheter fitting with said relatively thin portions snugly folded around said catheter fitting and with said relatively thick portions forming a gripping means For guiding said catheter assembly during insertion into a vein;

said gripping means being in a plane which is at an angle of 30* to 60* with respect to a plane defined by the longitudinal axis of the puncture needle and the point of the puncture needle; and

said thin portions being tangentially joined to the underside of said catheter fitting at a point which is substantially diametrically opposite to said thick portions of said wing elements when said wing elements are symmetrically folded around opposite sides of said catheter fitting.

2. An indwelling vein catheter assembly comprising a catheter fitting, a catheter attached to and extending forwardly from said catheter fitting, a puncture needle holder attached to the rearward end of said catheter fitting, a puncture needle extending forwardly from said needle holder and concentrically through said catheter fitting and said catheter, and flexible, laterally extending wing elements attached to said catheter fitting, said wing elements being adapted for folding around opposite sides of said catheter fitting to form gripping means for guiding said catheter assembly during insertion into a vein, said wing elements being tangentially attached to said catheter fitting and, in a symmetrically folded position about the catheter fitting, form said gripping means in a plane which is at an angle of 30* to 60* with respect to a plane defined by the longitudinal axis of the puncture needle and the point of the puncture needle, and a support means laterally extending from said puncture needle holder, whereby said wing elements will be supported by said support means during insertion.

3. An indwelling vein catheter assembly comprising a catheter fitting, a catheter attached to and extending forwardly from said catheter fitting, a puncture needle holder attached to the rearward end of said catheter fitting, a puncture needle extending forwardly from said needle holder and concentrically through said catheter fitting and said catheter, flexible, laterally extending wing elements attached to said catheter fitting, said wing elements being adapted for folding around opposite sides of said catheter fitting to form gripping means for guiding said catheter assembly during insertion into a vein, said wing elements being tangentially attached to said catheter fitting and, in a symmetrically folded position about the catheter fitting, form said gripping means in a plane which is at an angle of 30* to 60* with respect to a plane defined by the longitudinal axis of the puncture needle and the point of the puncture needle, and a rigid fixed wing element laterally extending from said puncture needle holder in a plane which is at an angle of 30* to 60* with respect to said plane defined by the puncture needle axis and the puncture needle point.

4. An indwelling vein catheter assembly according to claim 3, wherein said catheter fitting and said needle holder are rigidly connected by releasable locking means.

5. An indwelling vein catheter assembly according to claim 3, additionally comprising an infusion hose fitting attached to the rearward end of said needle holder at an angle with respect to the longitudinal axis of the puncture needle.