Back to results
US 11,752,240 B2Granted
Rod shaped body and medical device
AssigneeMarvis Interventional GmbH
InventorsKlaus Düring, Joachim Georg Pfeffer
Life of this patent
Estimating the term…
Abstract
The present invention relates to a medical device. In particular, the present invention concerns a medical device which can be detected by means of magnetic resonance imaging (MRI).
Claims14
A medical device comprising:
- an elongate polymer body;
- rod-shaped bodies embedded in the elongate polymer body, wherein at least one of the rod-shaped bodies comprises:
- one or more non-metallic filaments;
- and
- a non-ferromagnetic matrix material enclosing and/or agglutinating the one or more filaments,
- wherein the rod-shaped bodies are arranged in different positions with respect to the central longitudinal axis of the medical device, wherein rod-shaped bodies positioned near the central axis of the medical device contain marker particles in a matrix material thereof to form a passive- negative magnetic resonance imaging (MRI) marker for generating an artifact in a magnetic resonance imaging process and all rod-shaped bodies positioned more distant to the central longitudinal axis of the medical device contain no marker particles;
- and
- wherein the medical device is a guidewire, mandrel, or stylet, wherein the medical device generates a sufficiently strong and sharp image, by influencing only a comparably small layer of surrounding molecules by the MRI marker particles in magnetic resonance imaging.
5 more elements
A medical device comprising:
- one or more rod-shaped bodies, wherein at least one of the rod-shaped bodies comprises one or more non-metallic filaments and a non-ferromagnetic matrix material, wherein the matrix material encloses and/or agglutinates the one or more filaments;
- and
- an envelope polymer in which the one or more rod-shaped bodies are embedded, wherein a high tenacity fiber (HT-fiber) is embedded either in the matrix material or in the envelope polymer, wherein the HT-fiber extends along the whole longitudinal direction of the medical device, and
- wherein the HT-fiber is more flexible than the one or more non-metallic filaments,
- wherein the medical device is a guidewire, catheter, mandrel, stylet, stent, biopsy needle, puncture needle or cannula and contains marker particles only in a central section of the medical device to form a passive-negative magnetic resonance imaging (MRI) marker for generating an artifact in a magnetic resonance imaging process.
2 more elements
Dependencies are inferred from the claim text.