IP Library › Patent Application 19359033
Patent Application
App. No. 19/359,033

CATHETER BLOOD PUMPS AND COLLAPSIBLE PUMP HOUSINGS

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Quick Facts
Patent No.
US None
App. No.
19/359,033
Abstract

Catheter blood pumps that include an expandable pump portion. The pump portions include an collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers.

Claims (18)

1 . (canceled)

2 . A catheter blood pump, comprising:

an elongate catheter;

an expandable pump portion extending distally from the catheter, the pump portion including an expandable blood conduit defining a blood lumen, the expandable blood conduit comprising:

a proximal impeller scaffold portion, a distal scaffold portion, and a central scaffold portion disposed between the proximal impeller scaffold portion and the distal scaffold portion, the central scaffold portion having a different configuration than the proximal impeller scaffold portion and the distal scaffold portion and including a plurality of helical elements between the proximal impeller scaffold portion and the distal scaffold portion, wherein the proximal impeller scaffold portion and the distal scaffold portion do not include helical elements; and

an impeller disposed at least partially within the proximal impeller scaffold portion.

3 . The blood pump of claim 2 , wherein the central scaffold portion is less stiff in response to a radially inward force than the proximal impeller scaffold portion and the distal impeller portion.

4 . The blood pump of claim 2 , further comprising a plurality of proximal struts connecting the elongate catheter to the proximal impeller scaffold portion.

5 . The blood pump of claim 2 , wherein the plurality of proximal struts at least partially define an outlet of the catheter blood pump.

6 . The blood pump of claim 2 , further comprising a plurality of distal struts extending distally from the distal scaffold portion.

7 . The blood pump of claim 6 , wherein the plurality of distal struts at least partially define an inlet of the catheter blood pump.

8 . The blood pump of claim 2 , wherein the central scaffold portion is unitary with the proximal impeller scaffold portion and the distal scaffold portion.

9 . The blood pump of claim 2 , wherein the proximal impeller scaffold portion and the distal scaffold portion have different configurations.

10 . The blood pump of claim 2 , wherein the distal scaffold portion has a length that is different than a length of the proximal impeller scaffold portion.

11 . The blood pump of claim 5 , wherein the impeller extends partially into the outlet.

12 . The blood pump of claim 2 , further comprising at least one bend formed in the expandable blood conduit.

13 . The blood pump of claim 2 , wherein the expandable blood conduit is formed from nitinol.

14 . The blood pump of claim 2 , further comprising a membrane disposed of the expandable blood conduit to further define the blood lumen.