Leadless cardiac stimulation systems
First Claim
Patent Images
1. A system, comprising:
- an elongate member; and
an intravascularly-deliverable leadless electrode assembly, comprising;
a housing having a proximal end and a distal end, the housing defining an inwardly extending cavity that is located centrally on the proximal end of the housing and extends distally from a proximally facing cavity opening, the cavity providing access to an engaging feature, the engaging feature including a proximally facing side and a curved distally facing side having a predefined curved surface;
an attachment mechanism operatively coupled to the distal end of the housing and configured to secure at least a portion of the leadless electrode assembly to a myocardium of a heart, the attachment mechanism including a tip configured to penetrate into the myocardium of the heart;
an electrostimulation generator circuit situated in the housing;
respective electrostimulation electrodes coupled to the electrostimulation generator circuit and configured to provide an electrostimulation to the myocardium of the heart; and
wherein a portion of the elongate member is configured to extend through the proximally facing cavity opening into the cavity of the housing to access and releasably engage the curved distally facing side of the engaging feature in a non-threaded manner to control separation between the leadless electrode assembly and the elongate member when pulling on the elongated member in a proximal direction.
0 Assignments
0 Petitions
Accused Products
Abstract
Various configurations of systems that employ leadless electrodes to provide pacing therapy are provided. In one example, a system that provides multiple sites for pacing of myocardium of a heart includes wireless pacing electrode assemblies that are implantable at sites proximate the myocardium using a percutaneous, transluminal, catheter delivery system. Also disclosed are various configurations of such systems, wireless electrode assemblies, and delivery catheters for delivering and implanting the electrode assemblies.
-
Citations
16 Claims
-
1. A system, comprising:
-
an elongate member; and an intravascularly-deliverable leadless electrode assembly, comprising; a housing having a proximal end and a distal end, the housing defining an inwardly extending cavity that is located centrally on the proximal end of the housing and extends distally from a proximally facing cavity opening, the cavity providing access to an engaging feature, the engaging feature including a proximally facing side and a curved distally facing side having a predefined curved surface; an attachment mechanism operatively coupled to the distal end of the housing and configured to secure at least a portion of the leadless electrode assembly to a myocardium of a heart, the attachment mechanism including a tip configured to penetrate into the myocardium of the heart; an electrostimulation generator circuit situated in the housing; respective electrostimulation electrodes coupled to the electrostimulation generator circuit and configured to provide an electrostimulation to the myocardium of the heart; and wherein a portion of the elongate member is configured to extend through the proximally facing cavity opening into the cavity of the housing to access and releasably engage the curved distally facing side of the engaging feature in a non-threaded manner to control separation between the leadless electrode assembly and the elongate member when pulling on the elongated member in a proximal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An intravascularly-deliverable leadless electrostimulation electrode assembly, comprising:
-
a housing having a proximal end and a distal end; an attachment mechanism operatively coupled to the distal end of the housing and comprising a tine configured to secure at least a portion of the leadless electrode assembly to a myocardium of a heart, the tine including a tip configured to penetrate into the myocardium of the heart; an electrostimulation generator circuit situated in the housing; respective electrostimulation electrodes coupled to the electrostimulation generator circuit and configured to provide an electrostimulation to the myocardium of the heart; wherein the proximal end of the housing defines a recess, the recess defined by sidewalls, an end wall, and is accessible by a recess opening at a single end of the recess, opposite the end wall, the recess opening facing in the proximal direction of the housing, the recess providing access to an engaging feature, wherein the engaging feature includes a proximally facing side and a distally facing side; and wherein the recess is configured to receive at least a portion of an intravascularly-deliverable elongate member via the proximally facing recess opening and wherein the elongate member is changeable from a first configuration to a second configuration, wherein; in the first configuration, the elongate member engages in a non-threaded manner the distally facing side of the engaging feature in order to control separation of the leadless electrostimulation electrode assembly from the elongate member when pulling on the elongated member in a proximal direction; and in the second configuration, the elongate member disengages from the distally facing side of the engaging feature and selectively detaches from the leadless electrostimulation electrode assembly. - View Dependent Claims (13, 14, 15)
-
-
16. A system, comprising:
-
an intravascularly-deliverable elongate member; an intravascularly-deliverable leadless electrode assembly, comprising; a housing having a proximal end, a distal end, and a cavity defined by a wall of the housing, the cavity disposed centrally within the proximal end of the housing, an interior of the cavity shaped to define an engaging feature, the engaging feature including a proximally facing side and a distally facing side, the distally facing side having a tangent that is perpendicular to a longitudinal axis of the housing; an attachment mechanism extending out from the distal end, the attachment mechanism configured to secure at least a portion of the leadless electrode assembly to a myocardium of a heart; an electrostimulation generator circuit disposed in the housing; respective electrostimulation electrodes coupled to the electrostimulation generator circuit and configured to provide an electrostimulation to the myocardium of the heart; and a power source coupled to the electrostimulation generator circuit and configured to provide operating energy to the electrostimulation generator circuit; and an intravascularly-deliverable catheter defining a lumen; wherein the leadless electrode assembly and the elongate member are sized and shaped to transit the lumen of the intravascularly-deliverable catheter during delivery of the leadless electrode assembly to an implantation site or removal of the leadless electrode assembly from the implantation site; and wherein the elongate member is configured to be received at least partially within the cavity of the leadless electrode assembly and to engage the distally facing side of the engaging feature in a non-threaded manner to control the separation between the elongate member and the leadless electrode assembly, the engaging feature and the elongate member are configured to selectively release the elongated member from the leadless electrode assembly.
-
Specification