Flexible catheter with a drive shaft
AssigneeEcp Entwicklungsgesellschaft Mbh
InventorsMario Scheckel, Joerg Schumacher
Life of this patent
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Abstract
The invention relates to a flexible catheter (1) with a drive shaft (2), with a sleeve (6) surrounding the drive shaft (2) and with a sheath (7) surrounding the drive shaft (2) and the sleeve (6), wherein the drive shaft, the sleeve (6) and the sheath (7) are pliable, wherein the drive shaft (2) at a proximal end of the drive shaft (2) comprises a coupling element (5) for connecting the drive shaft (2) to a drive motor (18), wherein the drive shaft (2) at least regionally consist of a alloy which contains at least 10% by weight of chromium, nickel and cobalt in each case. The invention moreover relates to a blood pump arrangement with such a catheter.
Claims18
A flexible catheter comprising:
- a drive shaft;
- a sleeve surrounding the drive shaft;
- and
- a sheath surrounding the drive shaft and the sleeve,
- wherein the drive shaft, the sleeve, and the sheath are configured to be flexible, and the drive shaft, at a proximal end of the drive shaft, has a coupling element for connecting the drive shaft with a drive motor, and the drive shaft consists at least partially of an alloy which comprises at least 10% by weight of chromium, nickel and cobalt,
- wherein the sleeve is configured as a bearing coil with a plurality of windings, each winding of the plurality of windings rotating helically around the drive shaft in an axial direction.
A blood pump assembly with a catheter, comprising:
- a blood pump;
- a drive shaft;
- a sleeve surrounding the drive shaft;
- and
- a sheath surrounding the drive shaft and the sleeve,
- wherein the drive shaft, the sleeve, and the sheath are configured to be flexible, and the drive shaft, at a proximal end of the drive shaft, has a coupling element for connecting the drive shaft with a drive motor, and the drive shaft consists at least partially of an alloy which comprises at least 10% by weight of chromium, nickel, and cobalt,
- wherein the sleeve is configured as a bearing coil with a plurality of windings, each winding of the plurality of windings rotating helically around the drive shaft in an axial direction.
Dependencies are inferred from the claim text.