Subcutaneous injection set for use with a reservoir that has a septum
US6749589B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2000 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Dec 5, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0014
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An infusion set includes a needle hub with a needle to be inserted in a through passageway of the cannula housing through a sealing surface of a soft cannula. The infusion set includes a guide for centering the needle relative to the cannula sealing surface, a dirt trap, and the through passageway, as well as a locking device for locking the cannula housing and the needle hub together to prevent inadvertent disengagement. The guide includes co-operating guide pins and guide openings and a draft angle on the needle hub. The pins are located on each side of the needle and the through passageway. The connecting tube includes an inner tube of polyethylene and shrink fitted tubing at each end suitable for a solvent bonding layer. The composite can be reinforced with monofilament strands sandwiched between the two tubular layers to prevent kinking, or the inner tube can be formed in a triangular shape. The triangular shape composite is incased in a thin polyester shrink tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.