Patent ID: 8747464

Claim:
A device for at least assisting in pumping of a patient's heart, comprising: a multilayer sheathing part configured for compressing a patient's heart at least in certain sections, the sheathing part having at least one stabilization layer for shaping the sheathing part and at least one inner extensible augmentation layer, at least one cavity being formed between the at least one stabilization layer and the augmentation layer, the cavity being expandable and contractible by a fluid for the cyclic compression of the heart, the sheathing part having a coiled insertion state for insertion of the device into a body and an arched functional state adapted for at least partially sheathing or encompassing a patient's heart in use, and means for directing fluid into the stabilization layer for inflating the stabilization layer, at least in certain sections, for converting the sheathing part from the coiled insertion state into the arched functional state, wherein the sheathing part, in the insertion state, comprises two coiled inflatable edge portions extending in a longitudinal direction, wherein a base part is arranged on the sheathing part between the edge portions, wherein the edge portions converge into a common inflatable round-bottom-shaped edge portion that is adapted for sheathing or encompassing an apex of a patient's heart in use, and wherein the at least one stabilization layer has a honeycomb structure with a plurality of adjacent honeycomb cells, wherein the honeycomb cells are connected to at least one fluid line for cyclically supplying a fluid into the honeycomb cells, wherein, the honeycomb cells, in the functional state, have a cross-section tapering towards the heart with a larger base area on a side away from the heart and with a smaller base area on the a close to the heart, and wherein the honeycomb cells are inflatable so as to produce an inward arching of the sheathing part by supplying of fluid into the honeycomb cells.