Pacing catheter with stent electrode
First Claim
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1. A percutaneous transluminal vascular intervention (PTVI) device assembly for use during revascularization of a blood vessel, the PTVI device assembly comprising:
- a stent catheter including a catheter proximal end portion, a catheter distal end portion, an elongate catheter shaft coupled between the catheter proximal end portion and the catheter distal end portion, a first connector at the catheter proximal end portion, and a first conductor electrically connected to the first connector;
a stent detachably connected to the catheter distal end portion, the stent including a first electrode to be electrically connected to the first connector through the first conductor;
a dissolvable connector connecting between the stent and the catheter distal end portion, the dissolvable connector being electrically conductive and dissolvable by electrolysis after being exposed to blood;
a sheath including a sheath proximal opening and a sheath distal opening, the sheath configured to accommodate a portion of the stent catheter and allow the stent to exit through the distal opening; and
an external pacemaker configured to be connected to the first connector, the pacemaker including;
a pacing output circuit configured to deliver pacing pulses through the first pacing electrode;
a control circuit coupled to the pacing output circuit and configured to execute a cardioprotective pacing protocol specifying one or more cardiac protection pacing sequences each including alternating pacing and non-pacing periods, the pacing periods each having a pacing duration during which a plurality of the pacing pulses is delivered, the non-pacing periods each having a non-pacing duration during which none of the pacing pulses is delivered;
a chassis housing the pacing output circuit and the control circuit; and
a user interface incorporated onto the chassis, the user interface allowing for control of timing of the delivery of the pacing pulses.
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Abstract
Cardioprotective pacing is applied to prevent and/or reduce cardiac injury associated with myocardial infarction (MI) and revascularization procedure. Pacing pulses are generated from a pacemaker and delivered through one or more pacing electrodes incorporated onto one or more percutaneous transluminal vascular intervention (PTVI) devices during the revascularization procedure. In one embodiment, at least one pacing electrode is constructed as, or incorporated onto, a stent at a distal end portion of a stent catheter.
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Citations
20 Claims
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1. A percutaneous transluminal vascular intervention (PTVI) device assembly for use during revascularization of a blood vessel, the PTVI device assembly comprising:
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a stent catheter including a catheter proximal end portion, a catheter distal end portion, an elongate catheter shaft coupled between the catheter proximal end portion and the catheter distal end portion, a first connector at the catheter proximal end portion, and a first conductor electrically connected to the first connector; a stent detachably connected to the catheter distal end portion, the stent including a first electrode to be electrically connected to the first connector through the first conductor; a dissolvable connector connecting between the stent and the catheter distal end portion, the dissolvable connector being electrically conductive and dissolvable by electrolysis after being exposed to blood; a sheath including a sheath proximal opening and a sheath distal opening, the sheath configured to accommodate a portion of the stent catheter and allow the stent to exit through the distal opening; and an external pacemaker configured to be connected to the first connector, the pacemaker including; a pacing output circuit configured to deliver pacing pulses through the first pacing electrode; a control circuit coupled to the pacing output circuit and configured to execute a cardioprotective pacing protocol specifying one or more cardiac protection pacing sequences each including alternating pacing and non-pacing periods, the pacing periods each having a pacing duration during which a plurality of the pacing pulses is delivered, the non-pacing periods each having a non-pacing duration during which none of the pacing pulses is delivered; a chassis housing the pacing output circuit and the control circuit; and a user interface incorporated onto the chassis, the user interface allowing for control of timing of the delivery of the pacing pulses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for cardioprotective pacing during revascularization of a blood vessel, the method comprising:
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delivering pacing pulses using a stent connected to a percutaneous transluminal stent catheter including a portion placed in a sheath during a percutaneous transluminal coronary angioplasty procedure, the stent including a first pacing electrode; controlling the delivery of the pacing pulses by executing a cardioprotective pacing protocol specifying one or more cardiac protection pacing sequences each including alternating pacing and non-pacing periods, the pacing periods each having a pacing duration during which a plurality of the pacing pulses is delivered, the non-pacing periods each having a non-pacing duration during which none of the pacing pulses is delivered; and disconnecting the stent from the stent catheter after the delivery of the pacing pulses using a connector that is dissolvable by electrolysis when exposed to blood, the connector connecting the stent to the stent catheter, the stent remaining in the blood vessel after the disconnection. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification