Catheter system
AssigneesHeraeus Deutschland GmbH & Co. KG, Heraeus Medical Components LLC
InventorsStefan Schibli, Michael Grimm, Ronald Von Wald, Mark A. Hjelle, Ilias Nikolaidis, Malte Naujoks
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Abstract
One aspect relates to a catheter system, a use of such catheter system and a manufacturing method for such catheter system. The catheter system includes an at least partially flexible catheter body, at least a ring electrode, and at least a strain gauge. The ring electrode surrounds at least a portion of the flexible catheter body. The strain gauge is allocated to the ring electrode and the strain gauge is configured to measure a deformation of the flexible catheter body at a position allocated to the ring electrode to detect a contact between the ring electrode and tissue.
Claims19
A catheter system comprising:
- a catheter body, wherein at least a part of the catheter body is flexible;
- at least one ring electrode;
- and
- at least one strain gauge;
- wherein the at least one ring electrode surrounds at least a portion of the flexible part of the catheter body;
- wherein the at least one strain gauge is arranged in a proximity of the at least one ring electrode;
- wherein the at least one strain gauge is configured to measure a deformation of the flexible part of the catheter body at a position in a proximity of the at least one ring electrode to indirectly detect a contact between the at least one ring electrode and tissue;
- wherein the at least one strain gauge comprises a piezoresistive material comprising a carbon component and an elastomer component;
- wherein the carbon component comprises carbon particles comprising macropores having a pore size between 50 nm and 1,000 nm measured by Hg porosimetry;
- and
- wherein the piezoresistive material has an original state and the carbon particles allow the piezoresistive material to relax back to the original state when a force is removed.
Dependencies are inferred from the claim text.