Cannula system and method for immobilizing an implanted catheter during catheter anchoring
AssigneeMedtronic, Inc.
InventorBrian D. Nelson
Life of this patent
Estimating the term…
Abstract
Devices, systems, and methods for immobilizing an implanted catheter tip while the catheter is anchored relative to surrounding tissue. In one embodiment, a cannula system is included that incorporates a cinch tube for guiding the catheter to a target site within a body. The cinch tube may define a cinch window to receive therein a cinch member operable to immobilize and occlude the catheter. The cinch tube may also include an elongate opening proximate the cinch window. The elongate opening allows extraction of a portion of the catheter and subsequent severing of the catheter above the cinch window/occlusion site.
Claims20
A cannula system for immobilizing a device within a mammalian body while the device is anchored to surrounding tissue, the system comprising:
- a guide tube comprising a body fixable to a surgical apparatus;
- an elongate cinch tube comprising an outer surface and an inner surface, the cinch tube configured to slidably engage the guide tube;
- and
- a cinch member comprising a clamp element configured to engage the cinch tube and immobilize the device relative to the cinch tube when the device is positioned within the cinch tube.
A cannula system for immobilizing a tip of a catheter relative to a target site located within a mammalian skull while the catheter is being secured relative to a burr hole aligned with the target site, the system comprising:
- a guide tube comprising a body fixable relative to a surgical apparatus located outside of the burr hole, and an elongate tubular extension protruding from the body of the guide tube towards the target site;
- an elongate cinch tube comprising an inner surface and an outer surface, the inner surface configured to slidably receive the extension therein, wherein a cinch window is formed between the inner and outer surfaces near a distal end of the cinch tube;
- a catheter configured for insertion through both the guide tube and the cinch tube;
- and
- a cinch member comprising a first clamp element configured to pass through the cinch window and compress the catheter against the inner surface of the cinch tube.
A method of implanting a therapy delivery catheter and immobilizing the catheter while the catheter is coupled to an infusion source, the method comprising:
- implanting the catheter such that a distal tip of the catheter is located at a predetermined target site, the catheter at least partially supported by a cinch tube;
- applying a clamping member to the catheter at a cinch location associated with the cinch tube, wherein the clamping member is configured to both occlude a lumen defined by the catheter, and restrain the catheter relative to the cinch tube at the cinch location;
- severing the catheter at a cut location between the cinch location and a proximal end of the catheter;
- connecting the catheter to the infusion source;
- and
- removing the clamping member.
Dependencies are inferred from the claim text.