Insertion aid for inserting a cannula of a catheter head into organic tissue

• US 20050251098A1
• Filed: 05/17/2005
• Published: 11/10/2005
• Est. Priority Date: 11/21/2002
• Status: Active Grant

• Current Assignee: Roche Diagnostics International AG (Roche Holding AG)
• Original Assignee: Roche Diagnostics International AG (Roche Holding AG)
• Inventors: Wyss, Martin, Horisberger, Ronny-Patrick
• Granted Patent: US 7,578,807 B2
• Time in Patent Office: Days
• US Class Current: 604/263
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 25/0612 Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: A61M 5/3216 Caps placed transversally onto the needle, e.g. pivotally attached to the needle base

Abstract

An insertion aid for inserting a cannula of a catheter head into organic tissue, in particular a catheter head for administering a liquid active substance, wherein the insertion aid includes a guide needle that is fixed to a grip section for removably inserting and stabilising the cannula during insertion into the organic tissue and a needle shield, having at least two sections, which is secured in a pivotable manner to the grip section and which encases and shields the guide needle when the insertion aid is separated from the catheter head.

Claims

1. An insertion aid for inserting a cannula of a catheter head into organic tissue, in particular a catheter head for administering a liquid active substance, with a guide needle which is fixed to a grip section and is used for removable introduction and stabilizing of the cannula during insertion into the organic tissue, and with a needle guard, comprising at least two parts, which is anchored in a pivotable manner on the grip section and which encloses and shields the guide needle when the insertion aid is separated from the catheter head.

2. The insertion aid as claimed in claim 1, wherein the two parts of the needle guard can be locked together.

3. The insertion aid as claimed in claim 2, wherein the two parts of the needle guard are anchored in a pivotable manner on the grip section via, in each case, at least one film hinge.

4. The insertion aid as claimed in claim 3, wherein the two parts of the needle guard are each designed as disk-shaped shields.

5. The insertion aid as claimed in claim 4, wherein the two parts of the needle guard can be pivoted from a first position oriented substantially perpendicular to the longitudinal direction of the guide needle, for insertion of the guide needle into the cannula, to a second position oriented substantially parallel to the longitudinal direction of the guide needle.

6. The insertion aid according to claim 5, wherein the two parts can be locked together in the second position.

7. The insertion aid as claimed in claim 6, wherein the shields each have arc-shaped web sections which, when they are locked together, slide one inside the other and form a labyrinthine enclosure for the guide needle.

8. The insertion aid as claimed in claim 7, wherein a centering web spaced apart from the guide needle is arranged on a lower end face of the grip section.

9. The insertion aid as claimed in claim 1, wherein the grip section has a cylindrical contour with grip surfaces lying opposite one another on its outer circumferential surface.

10. The insertion aid as claimed in claim 1, wherein the grip section and the needle guard are in one piece and are made of plastic.

11. The insertion aid as claimed in claim 1, wherein, when the two parts of the two needle guard are locked together, the guide needle is enclosed by the two parts without touching the two parts.

12. An insertion aid comprising a needle guard comprising a grip section and at least two parts moveably coupled to the grip section, said two parts being moveable to substantially enclose a guide needle after a use of the guide needle.

13. The insertion aid according to claim 12, wherein the two parts are each moveably coupled to the grip section via a living hinge.