Cardiac harness delivery device and method of use
First Claim
1. An assembly for delivering and mounting a cardiac harness on a heart, comprising:
- an elongate body having a proximal portion and a distal portion, the elongate body having a cavity sized to contain a cardiac harness in a compressed configuration;
the cardiac harness having a plurality of elongate sheaths, the sheaths having elongate lumens;
the cardiac harness being permanently attached to the sheaths;
a plurality of elongate push rods longitudinally movable with respect to the elongate body, each lumen of each sheath slidably receives one of the elongate push rods such that advancement of the push rods in a distal direction moves the cardiac harness from the compressed configuration in the cavity to an expanded configuration outside the cavity; and
the push rods are tapered from a larger cross-section at a proximal end to a relatively narrower cross-section at a distal end so that at least a portion of the push rods frictionally slide into corresponding lumens of the sheaths.
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Accused Products
Abstract
A delivery system for delivering and mounting a cardiac harness on a heart including an elongate body having a proximal portion and a distal portion. The body includes a cavity sized to contain the cardiac harness in a compacted configuration and also includes a plurality of elongate push rods movable with respect to the body. The cardiac harness is releasably connected to the push rods such that, advancement of the push rods in a distal direction moves the cardiac harness from a compacted configuration, within the cavity, to an expanded configuration, outside the cavity. The push rods are configured to have varying stiffness along their length to provide sufficient flexibility to bend up to 90° to advance the cardiac harness onto the heart.
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Citations
21 Claims
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1. An assembly for delivering and mounting a cardiac harness on a heart, comprising:
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an elongate body having a proximal portion and a distal portion, the elongate body having a cavity sized to contain a cardiac harness in a compressed configuration; the cardiac harness having a plurality of elongate sheaths, the sheaths having elongate lumens; the cardiac harness being permanently attached to the sheaths; a plurality of elongate push rods longitudinally movable with respect to the elongate body, each lumen of each sheath slidably receives one of the elongate push rods such that advancement of the push rods in a distal direction moves the cardiac harness from the compressed configuration in the cavity to an expanded configuration outside the cavity; and the push rods are tapered from a larger cross-section at a proximal end to a relatively narrower cross-section at a distal end so that at least a portion of the push rods frictionally slide into corresponding lumens of the sheaths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An assembly for delivering and mounting a cardiac harness on a heart, comprising:
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an elongate body having a proximal portion and a distal portion, the elongate body having a cavity sized to contain a cardiac harness in a compressed configuration; a suction cup member proximate the distal end of the elongate body, the suction cup member having a first flared member; a second flared member proximate the distal end of the elongate body; a plurality of push rods longitudinally movable with respect to the elongate body and releasably connected to the cardiac harness; and the push rods slidingly engaging the second flared member as the push rods are advanced distally out of the cavity to advance the cardiac harness onto the heart. - View Dependent Claims (18, 19, 20, 21)
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Specification