Delivery Catheter Systems and Methods
First Claim
1. A delivery catheter, comprising:
- a handle having a torque knob;
a first shaft configured to attach the delivery catheter to a leadless biostimulator; and
a second shaft having a proximal portion coupled to the torque knob and a distal portion configured to engage the leadless biostimulator when it is attached to the delivery catheter, the second shaft configured to apply rotational torque to the leadless biostimulator with actuation of the torque knob, wherein the first shaft is coaxially disposed within the second shaft.
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Accused Products
Abstract
A leadless cardiac pacemaker comprises a housing, a plurality of electrodes coupled to an outer surface of the housing, and a pulse delivery system hermetically contained within the housing and electrically coupled to the electrode plurality, the pulse delivery system configured for sourcing energy internal to the housing, generating and delivering electrical pulses to the electrode plurality. Systems and methods for delivering the leadless cardiac pacemaker with delivery catheters are also provided. In some embodiments, the delivery catheters include first and second coaxial shafts configured to apply rotational torque to the pacemaker. In other embodiments, the pacemaker is held in place on the catheter with a tether.
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Citations
22 Claims
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1. A delivery catheter, comprising:
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a handle having a torque knob; a first shaft configured to attach the delivery catheter to a leadless biostimulator; and a second shaft having a proximal portion coupled to the torque knob and a distal portion configured to engage the leadless biostimulator when it is attached to the delivery catheter, the second shaft configured to apply rotational torque to the leadless biostimulator with actuation of the torque knob, wherein the first shaft is coaxially disposed within the second shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of delivering a medical device into a patient, comprising:
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attaching a leadless biostimulator to a delivery catheter; inserting the leadless biostimulator into a patient; advancing the leadless biostimulator to a target tissue; applying torque from a first shaft fully disposed in the delivery catheter to the leadless biostimulator to screw a fixation device of the leadless biostimulator into the target tissue; and unscrewing a second shaft fully disposed in the delivery catheter from the leadless biostimulator to detach the leadless biostimulator from the delivery catheter. - View Dependent Claims (9, 10, 11, 12)
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13. A delivery catheter, comprising:
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a shaft configured to apply rotational torque to a leadless biostimulator; a lumen disposed within the shaft, the lumen sized and configured to receive a tether of the leadless biostimulator; and a tether lock disposed in the delivery catheter and configured to engage the tether to hold the leadless biostimulator in contact with the delivery catheter. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of delivering a medical device into a patient, comprising:
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applying tension to a tether of a leadless biostimulator to hold the leadless biostimulator in contact with a delivery catheter; inserting the leadless biostimulator into a patient; advancing the leadless biostimulator to a target tissue; applying torque from a shaft of the delivery catheter to the leadless biostimulator to screw a fixation device of the leadless biostimulator into the target tissue; and releasing the tension from the tether to detach the leadless biostimulator from the delivery catheter. - View Dependent Claims (20, 21, 22)
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Specification