System and methods for chronic fixation of medical devices
First Claim
1. An implantable apparatus comprising:
- an electrostimulation electrode assembly including;
a primary fixation member that is sized, shaped, or configured to be actively engaged or affixed to a target tissue of a patient;
a secondary fixation member that is sized, shaped, or configured to passively bias against the target tissue when the primary fixation member is engaged or affixed to the target tissue; and
an electrostimulation electrode body having a proximal end and a distal end, the electrode body including at least one electrode, wherein the electrode body is sized, shaped, or configured to be attached to the primary fixation member and the secondary fixation member, and to deliver electrostimulation to a stimulation site of the patient via the at least one electrode;
wherein the primary fixation member and the secondary fixation member extend distally from the distal end of the electrode body;
wherein the secondary fixation member includes an expanded configuration and a collapsed configuration;
wherein the secondary fixation member extends distally a first distance when in the expanded configuration;
wherein the secondary fixation member extends distally a second distance when in the collapsed configuration; and
wherein the first distance is greater than the second distance.
1 Assignment
0 Petitions
Accused Products
Abstract
Devices or methods such as for stimulating excitable tissue or sensing physiologic response or other signals that can use chronic fixation mechanism are described. An implantable apparatus can comprise an electrostimulation electrode assembly that can include a primary fixation member and a secondary fixation member. The primary fixation member can be actively engaged or affixed to a target tissue of a patient, and the second fixation member can be biased against the target tissue, collapsed or compressed against the target tissue when the primary fixation member is affixed to the target tissue. The electrostimulation electrode assembly can also include at least one electrode such as to contact heart or other excitable tissue such as to deliver chronic electrostimulation or sensing physiologic responses.
19 Citations
18 Claims
-
1. An implantable apparatus comprising:
an electrostimulation electrode assembly including; a primary fixation member that is sized, shaped, or configured to be actively engaged or affixed to a target tissue of a patient; a secondary fixation member that is sized, shaped, or configured to passively bias against the target tissue when the primary fixation member is engaged or affixed to the target tissue; and an electrostimulation electrode body having a proximal end and a distal end, the electrode body including at least one electrode, wherein the electrode body is sized, shaped, or configured to be attached to the primary fixation member and the secondary fixation member, and to deliver electrostimulation to a stimulation site of the patient via the at least one electrode; wherein the primary fixation member and the secondary fixation member extend distally from the distal end of the electrode body; wherein the secondary fixation member includes an expanded configuration and a collapsed configuration; wherein the secondary fixation member extends distally a first distance when in the expanded configuration; wherein the secondary fixation member extends distally a second distance when in the collapsed configuration; and wherein the first distance is greater than the second distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
11. An implantable medical device (IMD), comprising:
-
a primary fixation member that is sized, shaped, or configured to be actively engaged or affixed to a heart; a secondary fixation member that is sized, shaped, or configured to be collapsed and compressed to passively bias against, and without being actively engaged or affixed to, the heart when the primary fixation member is engaged or affixed to the heart; and an electrostimulation unit that is sized, shaped, or configured to be attached to the primary fixation member and the secondary fixation member, and that includes at least one electrode to deliver electrostimulation to a stimulation site of the heart when at least one of the primary or the secondary fixation member is engaged with the heart; wherein the primary fixation member and the secondary fixation member extend distally from the distal end of the electrode electrostimulation unit; wherein the secondary fixation member includes an expanded configuration and a collapsed configuration; wherein the secondary fixation member extends distally a first distance when in the expanded configuration; wherein the secondary fixation member extends distally a second distance when in the collapsed configuration; and wherein the first distance is greater than the second distance. - View Dependent Claims (12, 13)
-
-
14. A method comprising:
-
providing an implantable medical device (IMD) configured to deliver an electrostimulation to a stimulation site of a patient; providing the IMD to be engaged or affixed to a target tissue, including; providing a primary fixation member configured to be actively engaged or affixed to the target tissue; and rotating the primary fixation member to engage the target tissue; and providing a secondary fixation member configured to be passively collapsed or compressed against the tissue when the primary fixation member is engaged or affixed to the target tissue; and delivering the electrostimulation to the target tissue via at least one electrode; wherein the primary fixation member and the secondary fixation member extend distally from the distal end of the electrode; wherein the secondary fixation member includes an expanded configuration and a collapsed configuration; wherein the secondary fixation member extends distally a first distance when in the expanded configuration; wherein the secondary fixation member extends distally a second distance when in the collapsed configuration; and wherein the first distance is greater than the second distance. - View Dependent Claims (15, 16, 17, 18)
-
Specification