Catheter arrangement and method for determining a force applied to a catheter end
US9913683B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2014 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Aug 22, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2218/002
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter arrangement including a catheter having a proximal end and a distal end and at least one continuous fluid channel, at the proximal end of which a fluid connection and at the distal end of which a nozzle is arranged, which has a cross section that can be varied by a force applied to the distal catheter end; a liquid feed unit, connected to the proximal fluid connection of the catheter feeds liquid into the at least one fluid channel at a predetermined operating pressure. A flow sensor measures, during operation of the catheter arrangement, a pressure drop at the fluid channel. A pressure evaluation unit, connected on the input side in a signal-based manner to the flow sensor, determines a force applied to the distal end of the catheter from the measured pressure drop at the fluid channel and from predetermined deformation characteristics of the associated nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.