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US 2026/0144557 A1Published application
Systems and methods for removing a hydrogel implant from a body lumen
AssigneeContraline, Inc.
InventorsKevin EISENFRATS, Tyler CHIARTAS, Nicholas MATSUMOTO, Yelena TROPSHA, Jeffrey W. FERENCE
Life of this patent
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Abstract
Methods for removing a biomaterial implant and reversing occlusive effects of the biomaterial implant are described. In particular, methods for performing removal of biomaterial implants without damage to a body lumen where the biomaterial was previously implanted are presented. More specifically, methods of reversing an implant within a vas deferens are described.
Claims9
1-3. (canceled)
A method of removing an implant from a body lumen, comprising:
- inserting a delivery member into the body lumen, the delivery member being in fluid communication with the implant, the body lumen having a maximal inner diameter in a range of 0.75 mm to 2.0 mm;
- advancing a guidewire through the delivery member and through the implant;
- advancing a microcatheter over the guidewire through the implant;
- positioning a distal end portion of the microcatheter beyond the implant;
- advancing a retrieval tool through the microcatheter to a position that is beyond the distal end portion of the microcatheter;
- transitioning the retrieval tool to an expanded configuration;
- engaging a portion of the implant with the retrieval tool in the expanded configuration;
- extracting at least a first portion of the implant from the body lumen by moving the retrieval tool;
- exerting a force on the implant via the delivery member;
- and
- moving at least a second portion of the implant from the body lumen via the force.
8 more elements
7-10. (canceled)
A method of removing an implant from a body lumen, comprising:
- inserting a delivery member into a first body lumen, the delivery member being in fluid communication with an upstream portion of the implant;
- advancing a guidewire through the delivery member and through the implant;
- advancing a microcatheter over the guidewire through the implant;
- positioning a distal end portion of the microcatheter downstream of the implant;
- advancing a retrieval tool through the microcatheter to a position that is downstream of the distal end portion of the microcatheter;
- transitioning the retrieval tool to an expanded configuration;
- engaging a portion of the implant with the retrieval tool in the expanded configuration;
- extracting at least the portion of the implant from the first body lumen by moving the retrieval tool in an upstream direction;
- exerting via the delivery member a force on the upstream portion of the implant;
- and
- moving the implant downstream to a second body lumen via the force.
8 more elements
14-77. (canceled)
Dependencies are inferred from the claim text.