Catheter-based system for delivery and retrieval of a leadless pacemaker
First Claim
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1. A handle for a catheter, the catheter including a deflectable catheter section and a pull wire coupled to the deflectable catheter section, the handle defining a longitudinal axis and comprising:
- a housing;
a hub disposed within the housing and coupled to the pull wire;
a deflection lever coupled to the hub and extending from a first side of the housing, the deflection lever movable between a first lever position in which the deflection lever extends away from the longitudinal axis at a first angle and a second lever position in which the deflection lever extends away from the longitudinal axis at a second angle less than the first angle; and
a brake assembly coupled to the hub and rotatable between a first brake position in which the brake assembly applies a first resistance to rotation of the hub and a second brake position in which the brake assembly applies a second resistance to rotation of the hub greater than the first resistance,wherein movement of the deflection lever from the first lever position to the second lever position rotates the hub, pulling the pull wire to deflect the deflectable catheter section.
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Abstract
Catheter-based delivery systems for delivery and retrieval of a leadless pacemaker include features to facilitate improved manipulation of the catheter and improved capture and docking functionality of leadless pacemakers. Such functionality includes mechanisms directed to deflecting and locking a deflectable catheter, maintaining tension on a retrieval feature, protection from anti-rotation, and improved docking cap and drive gear assemblies.
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Citations
20 Claims
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1. A handle for a catheter, the catheter including a deflectable catheter section and a pull wire coupled to the deflectable catheter section, the handle defining a longitudinal axis and comprising:
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a housing; a hub disposed within the housing and coupled to the pull wire; a deflection lever coupled to the hub and extending from a first side of the housing, the deflection lever movable between a first lever position in which the deflection lever extends away from the longitudinal axis at a first angle and a second lever position in which the deflection lever extends away from the longitudinal axis at a second angle less than the first angle; and a brake assembly coupled to the hub and rotatable between a first brake position in which the brake assembly applies a first resistance to rotation of the hub and a second brake position in which the brake assembly applies a second resistance to rotation of the hub greater than the first resistance, wherein movement of the deflection lever from the first lever position to the second lever position rotates the hub, pulling the pull wire to deflect the deflectable catheter section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A handle for a catheter, the catheter including a deflectable catheter section and a pull wire coupled to the deflectable catheter section, the handle defining a longitudinal axis and comprising:
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a housing; a hub disposed within the housing and coupled to the pull wire; a deflection lever coupled to the hub and extending from a first side of the housing, the deflection lever movable between a first lever position and a second lever position to deflect the deflectable catheter section; and a brake assembly comprising; a knob coupled to the hub and rotatable between a first brake position in which the brake assembly applies a first resistance to rotation of the hub and a second brake position in which the brake assembly applies a second resistance to rotation of the hub that is greater than the first resistance; and a brake lever coupled to the knob and extending from a second side of the housing opposite the first side. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A system for at least one of delivery or retrieval of an implantable medical device, the system comprising:
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a deflectable catheter section; a pull wire coupled to the deflectable catheter section; and a handle defining a longitudinal axis, the handle comprising; a housing; a hub disposed within the housing and coupled to the pull wire; a deflection lever coupled to the hub and extending from a first side of the housing, the deflection lever movable between a first lever position and a second lever position to deflect the deflectable catheter section; and a brake assembly coupled to the hub and rotatable between a first brake position in which the brake assembly applies a first resistance to rotation of the hub and a second brake position in which the brake assembly applies a second resistance to rotation of the hub greater than the first resistance. - View Dependent Claims (18, 19, 20)
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Specification