DEVICES, METHODS AND SYSTEMS FOR ESTABLISHING SUPPLEMENTAL BLOOD FLOW IN THE CIRCULATORY SYSTEM
First Claim
1. A blood circulation assist system for increasing blood flow:
- between a chamber in a heart of a patient and a remote location in the circulatory system of the patient, the system comprising;
an inflow cannula having a lumen; and
an insertion device configured to be received within the lumen of the inflow cannula and to facilitate insertion of a portion of the inflow cannula into the chamber of the heart, wherein the insertion device comprises;
a shaft having a distal end portion, a proximal end portion and a plurality of lumens formed therein, a first one of the lumens being configured to receive a guidewire therein and a second one of the lumens being configured to receive a pressurized fluid therein;
a tip connected to the distal end portion of the shaft, the tip being configured for insertion into the chamber of the heart, the tip having a hollow interior communicating with the first one of the lumens of the shaft; and
an inflatable member coupled to the distal end portion of the shaft and comprising a hollow interior in fluid communication with the second one of the lumens of the shaft, the inflatable member being movable between a first, deflated configuration wherein the inflatable member is disengaged with the inflow cannula and a second, inflated configuration wherein the insertion device is releasably secured to the inflow cannula.
1 Assignment
0 Petitions
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.
132 Citations
20 Claims
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1. A blood circulation assist system for increasing blood flow:
- between a chamber in a heart of a patient and a remote location in the circulatory system of the patient, the system comprising;
an inflow cannula having a lumen; and
an insertion device configured to be received within the lumen of the inflow cannula and to facilitate insertion of a portion of the inflow cannula into the chamber of the heart, wherein the insertion device comprises;
a shaft having a distal end portion, a proximal end portion and a plurality of lumens formed therein, a first one of the lumens being configured to receive a guidewire therein and a second one of the lumens being configured to receive a pressurized fluid therein;
a tip connected to the distal end portion of the shaft, the tip being configured for insertion into the chamber of the heart, the tip having a hollow interior communicating with the first one of the lumens of the shaft; and
an inflatable member coupled to the distal end portion of the shaft and comprising a hollow interior in fluid communication with the second one of the lumens of the shaft, the inflatable member being movable between a first, deflated configuration wherein the inflatable member is disengaged with the inflow cannula and a second, inflated configuration wherein the insertion device is releasably secured to the inflow cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- between a chamber in a heart of a patient and a remote location in the circulatory system of the patient, the system comprising;
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9. A system for inserting a cannula through biologic tissue comprising:
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a cannula having a lumen; and
an insertion device configured to be received within the lumen of the cannula and to facilitate insertion of a portion of the cannula through the biologic tissue, wherein the insertion device comprises;
a shaft having proximal and distal end portions;
a tip connected to the distal end portion of the shaft, the tip being configured for insertion through the biologic tissue; and
an expandable member coupled to the distal end portion of the shaft, the expandable member being movable between a first configuration wherein the expandable member is disengaged with the inflow cannula, and a second configuration wherein the expandable member is releasably secured to the inflow cannula.
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10. 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;
inserting the tip of the insertion device and the distal end portion of the inflow cannula into the chamber of the heart. - View Dependent Claims (11, 12, 13, 14, 15)
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16. 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 into the chamber of the heart;
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 (17)
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18. 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;
inserting at least the tip of the insertion device and the distal end portion of the cannula through the tissue. - View Dependent Claims (19, 20)
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Specification