Methods for establishing supplemental blood flow in the circulatory system
First Claim
1. A method of inserting an inflow cannula having a lumen into a chamber in a heart of a patient comprising:
- inserting an insertion device into the lumen of the inflow cannula wherein at least a portion of a tip of the insertion device protrudes beyond a distal end portion of the inflow cannula, the insertion device further including a shaft, with the tip being secured to a distal end portion of the shaft, and an expandable member coupled to the distal end portion of the shaft;
expanding the expandable member to releasably secure the inflow cannula to the insertion device; and
inserting the tip of the insertion device and the distal end portion of the inflow cannula into the chamber of the heart by pushing the insertion device through a wall of the heart and into the chamber while the inflow cannula is releasably secured to the insertion device.
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Accused Products
Abstract
A blood circulation assist system comprising an inflow cannula having a lumen and an insertion device configured to be received therein and to facilitate insertion of a portion of the inflow cannula into a heart chamber. The insertion device includes a shaft having distal and proximal end portions and a plurality of lumens. A first lumen is configured to receive a guidewire and a second lumen is configured to receive a pressurized fluid. A tip connected to the distal end portion of the shaft is configured for insertion into the heart chamber. The tip has a hollow interior communicating with the first shaft lumen. An inflatable member is coupled to the distal end portion of the shaft and includes a hollow interior in fluid communication with the second shaft lumen. The inflatable member is movable between deflated and inflated configurations for releasably securing the insertion device to the inflow cannula.
45 Citations
13 Claims
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1. A method of inserting an inflow cannula having a lumen into a chamber in a heart of a patient comprising:
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inserting an insertion device into the lumen of the inflow cannula wherein at least a portion of a tip of the insertion device protrudes beyond a distal end portion of the inflow cannula, the insertion device further including a shaft, with the tip being secured to a distal end portion of the shaft, and an expandable member coupled to the distal end portion of the shaft; expanding the expandable member to releasably secure the inflow cannula to the insertion device; and inserting the tip of the insertion device and the distal end portion of the inflow cannula into the chamber of the heart by pushing the insertion device through a wall of the heart and into the chamber while the inflow cannula is releasably secured to the insertion device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of inserting an inflow cannula into a chamber in a heart of a patient comprising:
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temporarily securing a distal end portion of an insertion device to a distal end portion of the inflow cannula; inserting a tip of the insertion device and the distal end portion of the inflow cannula into the chamber of the heart by pushing the insertion device through a wall of the heart and into the chamber while the inflow cannula is releasably secured to the insertion device; inserting the distal end portion of the inflow cannula into the chamber of the heart; releasing the distal end portion of the insertion device from the distal end portion of the inflow cannula; and withdrawing the insertion device from the inflow cannula. - View Dependent Claims (9)
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10. A method of inserting a cannula having a lumen through biologic tissue comprising:
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inserting an insertion device into the lumen of the cannula wherein at least a portion of a tip of the insertion device protrudes beyond a distal end portion of the cannula, the insertion device further including a shaft, with the tip being secured to a distal end portion of the shaft, and an expandable member coupled to the distal end portion of the shaft; expanding the expandable member to releasably secure the cannula to the insertion device; and inserting at least the tip of the insertion device and the distal end portion of the cannula through the biologic tissue by pushing the insertion device through the biologic tissue while the inflow cannula is releasably secured to the insertion device. - View Dependent Claims (11, 12, 13)
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Specification