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Inflow cannula

An intubation, fluid communication technology, applied in the field of steerable inflow intubation, which can solve problems such as the negative impact of flow capacity and the increased risk of occlusion

Active Publication Date: 2019-07-02
HEARTWARE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, the relatively small diameter and tapered tip can negatively affect flow capacity during substantially or completely venting of the ventricle
As another disadvantage, complete removal of the tip may create suction through the cannula, increasing the risk of occlusion

Method used

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  • Inflow cannula
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An implantable blood pump comprising an inflow cannula comprising:

[0035] an extensible tube having an inflow portion;

[0036] a diverter assembly coupled to the inflow portion of the tube;

[0037] an actuator coupled to the steering assembly for applying force to the tube; and

[0038] A cannula tip extending from the inflow portion of the tube and defining an aperture in fluid communication with the tube.

Embodiment 2

[0040] The inflow cannula of Example 1, further comprising an actuator member coupled to the cannula distal end.

Embodiment 3

[0042] The inflow cannula of embodiment 2, wherein the actuator member is a pull wire disposed within at least a portion of the inflow cannula.

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PUM

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Abstract

An implantable blood pump including an inflow cannula, the inflow cannula having a malleable tube including an inflow portion, a steering assembly coupled to the inflow portion of the tube, an actuator coupled to the steering assembly for applying a force to the tube, and a cannula tip extending from the inflow portion of the tube and defining an aperture in fluid communication with the tube.

Description

technical field [0001] The present invention relates to inflow cannula, and more particularly to a steerable inflow cannula. Background technique [0002] The inflow cannula is used with an implantable blood pump, such as a ventricular assist device ("VAD"), that provides left heart support and / or right heart support. The inflow cannula typically includes a relatively small diameter to position the inflow cannula within the heart chamber using transvascular or endovascular implantation methods. Furthermore, many inflow cannulas include tapered tips that are used for navigation through the vasculature while attempting to reduce the risk of occlusion of the tip opening, which is susceptible to obstruction from body tissue. Unfortunately, the relatively small diameter and tapered tip can negatively impact flow capacity during substantially or fully venting of the ventricle. As another disadvantage, complete removal of the tip may create suction through the cannula, increasing...

Claims

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Application Information

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IPC IPC(8): A61M1/10A61M60/178A61M60/237A61M60/857A61M60/865
CPCA61M60/857A61M60/865A61M60/237A61M60/178A61M60/148
Inventor J·A·拉罗斯
Owner HEARTWARE INC
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