US 11,724,090 B2
Cannula, cannula system and blood pump system
Daniel Phillips, Berlin (DE); and Markus Stollin, Großbeeren (DE)
Assigned to Berlin Heart GmbH, Berlin (DE)
Appl. No. 16/768,465
Filed by Berlin Heart GmbH, Berlin (DE)
PCT Filed May 18, 2018, PCT No. PCT/EP2018/063189
§ 371(c)(1), (2) Date May 29, 2020,
PCT Pub. No. WO2019/105597, PCT Pub. Date Jun. 6, 2019.
Claims priority of application No. PCT/EP2017/081267 (WO), filed on Dec. 1, 2017.
Prior Publication US 2020/0368413 A1, Nov. 26, 2020
Int. Cl. A61M 60/122 (2021.01); A61M 60/216 (2021.01); A61M 60/178 (2021.01); A61M 60/859 (2021.01); A61M 39/00 (2006.01); A61M 39/02 (2006.01); A61M 39/10 (2006.01); A61M 39/12 (2006.01)
CPC A61M 60/122 (2021.01) [A61M 39/00 (2013.01); A61M 39/02 (2013.01); A61M 39/0247 (2013.01); A61M 39/10 (2013.01); A61M 39/12 (2013.01); A61M 60/178 (2021.01); A61M 60/216 (2021.01); A61M 60/859 (2021.01); A61M 2039/0258 (2013.01); A61M 2205/02 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A cannula system for conducting a liquid, in particular blood, comprising:
a cannula comprising a hose element including a front end region and a rear end region, wherein a channel extends from the front end region of the hose element to the rear end region of hose element through the hose element;
a hollow body, and in particular a tube or a further hose element, wherein the hollow body includes a front end region that can be inserted into the channel of the hose element through a front inlet opening of the channel; and
a connector which is configured, in a connected state of the cannula system in which the front end region of the hollow body is inserted into the channel of the hose element of the cannula, to receive the front end region of the hose element and the front end region of the hollow body in an interior region of the connector, wherein the front end region of the hollow body and the connector are configured to exert clamping forces onto the front end region of the hose element in the connected state of the cannula system, and to clamp the front end region of the hose element between the front end region of the hollow body and the connector;
wherein the connector comprises a clamping sleeve, the clamping sleeve being disposed in the interior region of the connector and configured, in the connected state of the cannula system, to enclose the front end region of the hose element and exert a clamping force of the connector on the front end region of the hose element;
wherein the connector comprises a wedge element, the wedge element and the clamping sleeve being movable relative to one another between a preloaded configuration, in which the wedge element is disposed in a slot of the clamping sleeve and the clamping sleeve is preloaded and expanded by the wedge element, and a released configuration, in which the clamping sleeve is not preloaded and expanded by the wedge element, the wedge element and the clamping sleeve being in the released configuration when the cannula system is in the connected state.