Patent · US Expired

Medical catheter for intravascular long-term infusion of medication with polysiloxane hydrogel coating

US4976703A · kind A · utility

73Cited by

11References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Manfred Franetzki · Uttenreuth, DE
Helmut Funke · Möhrendorf, DE
Eugen Schweiker · Bubenreuth, DE

Key dates

Filing date	Feb 15, 1989
Grant date	Dec 11, 1990
Priority date	—
Expiry date	Feb 15, 2009

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2025/0048
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A medical catheter for intravascular long-term infusion of medication by an implanted or extracorporeal dosage device characterized by the catheter tube being of a single or multi-layer elastomer having a distal end shaped such that the exit opening for the medication is laterally arranged axially offset relative to the distal end of the catheter. The catheter is also coated with an external protective layer composed of a hydrogel.

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