Implantable medical elongated member including a tissue receiving fixation cavity
First Claim
1. An implantable medical elongated member configured to deliver a therapy from a medical device to a target therapy delivery site in a patient, the implantable elongated member comprising:
- an elongated body extending between a proximal end configured to couple to the medical device and a distal end;
a vacuum cavity defined by the elongated body and configured to receive vacuum pressure from a vacuum source to draw tissue of the patient into the vacuum cavity, wherein the vacuum cavity defines at least a first opening and a second opening;
a positive pressure line disposed within the elongated body and connected to the vacuum cavity via the first opening;
a fixation element disposed within the positive pressure line, wherein the fixation element is configured to enter the vacuum cavity from the positive pressure line through the first opening when a positive pressure is exerted on the fixation element via the positive pressure line; and
a vacuum channel disposed within the elongated body to couple the vacuum cavity to the vacuum source, wherein the vacuum channel is connected to the vacuum cavity via the second opening,wherein the elongated member comprises a catheter.
1 Assignment
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Accused Products
Abstract
This disclosure describes techniques for securing an elongated member, such as a medical lead, within a tissue of a patient. In particular, suction is applied from a vacuum to a vacuum cavity located proximate to a distal end of the lead to draw in tissue from the target therapy delivery site to the vacuum cavity. A fixation element is coupled to the tissue within the vacuum cavity to fix the lead to the target therapy delivery site. The fixation techniques of this disclosure secure the medical lead to the tissue of the patient to prevent the medical lead from migrating away from the target tissue location.
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Citations
24 Claims
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1. An implantable medical elongated member configured to deliver a therapy from a medical device to a target therapy delivery site in a patient, the implantable elongated member comprising:
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an elongated body extending between a proximal end configured to couple to the medical device and a distal end; a vacuum cavity defined by the elongated body and configured to receive vacuum pressure from a vacuum source to draw tissue of the patient into the vacuum cavity, wherein the vacuum cavity defines at least a first opening and a second opening; a positive pressure line disposed within the elongated body and connected to the vacuum cavity via the first opening; a fixation element disposed within the positive pressure line, wherein the fixation element is configured to enter the vacuum cavity from the positive pressure line through the first opening when a positive pressure is exerted on the fixation element via the positive pressure line; and a vacuum channel disposed within the elongated body to couple the vacuum cavity to the vacuum source, wherein the vacuum channel is connected to the vacuum cavity via the second opening, wherein the elongated member comprises a catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system comprising:
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a medical device; and an implantable medical elongated member configured to deliver a therapy from the medical device to a target therapy delivery site in a patient, the implantable elongated member comprising; an elongated body extending between a proximal end configured to couple to the medical device and a distal end; a vacuum cavity defined by the elongated body and configured to receive vacuum pressure from a vacuum source to draw tissue of the patient into the vacuum cavity, wherein the vacuum cavity defines at least a first opening and a second opening; a positive pressure line disposed within the elongated body and connected to the vacuum cavity via the first opening; a fixation element disposed within the positive pressure line, wherein the fixation element is configured to enter the vacuum cavity from the positive pressure line through the first opening when a positive pressure is exerted on the fixation element via the positive pressure line; and a vacuum channel disposed within the elongated body to couple the vacuum cavity to the vacuum source, wherein the vacuum channel is connected to the vacuum cavity via the second opening, wherein the elongated member comprises a catheter. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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inserting an implantable medical elongated member into a patient, the implantable medical elongated member comprising; an elongated body extending between a proximal end configured to couple to the medical device and a distal end; a vacuum cavity defined by the elongated body and configured to receive tissue of the patient, wherein the vacuum cavity defines at least a first opening and a second opening; a positive pressure line disposed within the elongated body and connected to the vacuum cavity via the first opening; a fixation element disposed within the positive pressure line; and a vacuum channel disposed within the elongated body and connected to the vacuum cavity via the second opening, wherein inserting the introducer into the patient comprises subcutaneously introducing the introducer proximate to a peripheral nerve of the patient, wherein inserting the implantable medical elongated member into a patient comprises introducing an introducer into the patient and introducing the implantable medical elongated member into the introducer, and wherein inserting the introducer into the patient comprises subcutaneously introducing the introducer proximate to a peripheral nerve of the patient; advancing the implantable medical elongated member to a target therapy delivery site within the patient; applying negative pressure via the vacuum channel to the vacuum cavity of the implantable medical elongated member to draw tissue adjacent to the vacuum cavity into the vacuum cavity; and applying a positive pressure to the fixation element via the positive pressure line to advance the fixation element from the positive pressure line, into the vacuum cavity, and into engagement with the tissue within the vacuum cavity to fix the implantable medical elongated member to the tissue. - View Dependent Claims (21, 22, 23)
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24. An implantable medical lead comprising:
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a lead body extending between a proximal end and a distal end; one or more electrodes proximate to the distal end of the lead body; a vacuum channel disposed within the lead body; a vacuum cavity defined by the lead body and configured to receive vacuum pressure from a vacuum source via the vacuum channel to draw tissue of the patient into the vacuum cavity, wherein the vacuum cavity defines at least a first opening and a second opening, and wherein the vacuum channel connects to the vacuum cavity via the first opening; a positive pressure line disposed within the lead body and connected to the vacuum cavity via the second opening; and a fixation element disposed within the positive pressure line and configured to enter the vacuum cavity from the positive pressure line when a positive pressure is exerted on the fixation element via the positive pressure line, wherein the vacuum cavity comprises a first vacuum cavity located between the one or more electrodes and the proximal end of the lead body and a second vacuum cavity located between the one or more electrodes and the distal end of the lead body.
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Specification