Pump arrangement
First Claim
1. A blood pump assembly comprising:
- an elongate catheter having a proximal end and a distal end;
a rotor disposed at a distal end of the elongate catheter;
a housing at least partially surrounding the rotor, the housing comprising;
a first fluid-tight section disposed at a distal end of the housing, the first fluid-tight section comprising a distal end defining a distal opening, a proximal end defining a proximal opening, and a central bore extending from the distal opening to the proximal opening, the central bore being radially fluid tight between the distal opening and the proximal opening; and
a second fluid-tight section at least partially formed of a flexible material and disposed at a proximal end of the housing, the second fluid-tight section comprising a first blood inlet disposed at a distal end of the second fluid-tight section, and a blood outlet disposed at a proximal end of the second fluid-tight section, wherein the distal end of the second fluid-tight section defines the first blood inlet, and wherein the second fluid-tight section is radially fluid-tight between the first blood inlet and the blood outlet;
wherein at least a portion of the second fluid-tight section is compressible.
1 Assignment
0 Petitions
Accused Products
Abstract
The subject matter of the present invention is a pump arrangement (1, 10, 20, 30, 40, 50), in particular for use in the body'"'"'s own vessels, having a pump (11, 41, 51) and a sheath (12, 42, 52) receiving the pump, bounding a flow passage (S) and having a distal intake opening (13, 43, 53) and a proximal outflow opening (14, 29, 39, 44, 54) for producing a driving flow by means of the pump, wherein the pump is arranged in a first fluid-tight section (12a, 42a, 52a) having the distal intake opening and a second fluid-tight section (12b, 42b, 52b) includes the proximal outflow opening. In accordance with the invention, a further inlet opening (15) is present between the first section and the second section and is arranged between the intake opening and the outflow opening, with the first section and the second section being arranged with respect to one another such that the inlet opening opens into the flow proximal to the pump.
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Citations
22 Claims
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1. A blood pump assembly comprising:
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an elongate catheter having a proximal end and a distal end; a rotor disposed at a distal end of the elongate catheter; a housing at least partially surrounding the rotor, the housing comprising; a first fluid-tight section disposed at a distal end of the housing, the first fluid-tight section comprising a distal end defining a distal opening, a proximal end defining a proximal opening, and a central bore extending from the distal opening to the proximal opening, the central bore being radially fluid tight between the distal opening and the proximal opening; and a second fluid-tight section at least partially formed of a flexible material and disposed at a proximal end of the housing, the second fluid-tight section comprising a first blood inlet disposed at a distal end of the second fluid-tight section, and a blood outlet disposed at a proximal end of the second fluid-tight section, wherein the distal end of the second fluid-tight section defines the first blood inlet, and wherein the second fluid-tight section is radially fluid-tight between the first blood inlet and the blood outlet; wherein at least a portion of the second fluid-tight section is compressible. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification