Patent · US Expired

Needle for penetrating a membrane

US8328772B2 · kind B2 · utility

48Cited by

157References

28Claims

0Family size

Assignee

Carmel Pharma AB · SE

Inventors

Peter Kinast · Rutesheim, DE
Kjell Andreasson · Mölndal, SE
Einar Jorgensen · Mörbylånga, SE
Fredrik Backstrom · Mölndal, SE

Key dates

Filing date	Jan 21, 2004
Grant date	Dec 11, 2012
Priority date	—
Expiry date	Sep 27, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/1194
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A needle 1 for penetrating a membrane 2, having a pointed end 3 provided with a penetrating tip 4 and with an opening 6 for letting a liquid in and/or out in a main direction 7 which is substantially parallel to the longitudinal extension of the needle 1. The penetrating tip 4 is designed with a substantially point-shaped edge 8 to initially prick the membrane when the membrane is penetrated. The outer edges 19 present on the pointed end 3 in the area from the point-shaped edge 8 to a position beyond the opening 6 are rounded so that after the initial penetration the pointed end 3 will push the membrane material away rather than cutting the membrane material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.