# US 2014/0155936 A1 · Twist-grip anchors and methods of use > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155936 A1 - Document ID: US20140155936A1 - Status: Published application - Kind: A1 - Application number: 13/827,686 - Filed: 2013-03-14 - Published: 2014-06-05 - Earliest claimed: 2012-12-05 - Assignees: Spinal Modulation, Inc. - Applicants: Spinal Modulation, Inc. - Inventors: Jeffrey J. Lee - Web page: https://patentgrep.com/patent/US20140155936A1 ## CPC - A61B 17/0401: {Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors (A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811)} - A61N 1/0558: {Anchoring or fixation means therefor} - A61N 2001/0582: {Suture sleeves} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) ## Abstract Devices, systems and methods are provided for anchoring implantable medical devices to maintain an implanted position. In particular, twist-grip anchors are provided. In some embodiments, the twist-grip anchor comprises a first support having a first lumen, a second support having a second lumen, and a sleeve having a first end fixedly attached to the first support and a second end fixedly attached to the second support, wherein the first and second supports and the sleeve are aligned to allow the passage of the elongate device through the first lumen, second lumen and sleeve, and wherein rotation of at least the first support twists the sleeve so that the sleeve engages the elongate device in a manner that resists movement of the elongate device in relation to the sleeve. The anchor is then attached to the tissue, such as by suturing. ## Claims ### Claim 1 An anchor for anchoring an elongate device to tissue within a patient comprising: a first support having a first lumen; a second support having a second lumen; and a sleeve having a first end fixedly attached to the first support and a second end fixedly attached to the second support, wherein the first and second supports and the sleeve are aligned to allow the passage of the elongate device through the first lumen, second lumen and sleeve, and wherein rotation of at least the first support twists the sleeve so that the sleeve engages the elongate device in a manner that resists movement of the elongate device in relation to the sleeve, and wherein the anchor is configured for attachment to the tissue. ### Claim 2 (depends on 1) An anchor as in claim 1, wherein the sleeve is compliant and conforms to the elongate device in an atraumatic manner during engagement. ### Claim 3 (depends on 2) An anchor as in claim 2, wherein the sleeve is comprised of silicone, polyurethane, or silicone-urethane copolymers. ### Claim 4 (depends on 1) An anchor as in claim 1, wherein level of engagement is adjustable by increasing or decreasing the amount of twist. ### Claim 5 (depends on 1) An anchor as in claim 1, wherein engagement atraumatically deforms the elongate device in a manner that assists in resistance of movement of the elongate device in relation to the sleeve. ### Claim 6 (depends on 1) An anchor as in claim 1, wherein rotation offsets the first and second supports by 90-180 degrees. ### Claim 7 (depends on 1) An anchor as in claim 1, wherein rotation is in increments of 10 degrees. ### Claim 8 (depends on 1) An anchor as in claim 1, wherein the first and second supports are biased to rotate causing twisting of the sleeve in a relaxed state. ### Claim 9 (depends on 1, 8) An anchor as in claim 1 or 8, further comprising a locking mechanism to lock the first and second supports in relation to each other. ### Claim 10 (depends on 1) An anchor as in claim 1, further comprising an outer housing comprising a first piece fixedly attached to the first support and a second piece fixedly attached to the second support, wherein the first and second pieces rotate in relation to each other. ### Claim 11 (depends on 10) An anchor as in claim 10, wherein the first and second pieces mate at a location over the sleeve. ### Claim 12 (depends on 1) An anchor as in claim 1, wherein the anchor includes a groove for holding a suture which attaches the anchor to the tissue. ### Claim 13 (depends on 1) An anchor as in claim 1, wherein the anchor includes a suture arm for supporting a suture which attaches the anchor to the tissue. ### Claim 14 (depends on 1) An anchor as in claim 1, further comprising a third support having a third lumen; and another sleeve having a first end fixedly attached to the second support and a second end fixedly attached to the third support, wherein the first, second and third supports and the sleeve are aligned to allow the passage of an elongate device through the first lumen, second lumen, third lumen and sleeve, and wherein rotation of at least one of the supports twists the sleeves so that the sleeves engage the elongate device in a manner that resists movement of the elongate device in relation to the sleeves. ### Claim 15 A method for anchoring an elongate device within a body of a patient comprising: advancing an elongate device through a sleeve of an anchor, wherein the anchor comprises a first support, a second support, and the sleeve having a first end fixedly attached to the first support and a second end fixedly attached to the second support; rotating at least the first support in relation to the second support so as to twist the sleeve to engage the elongate device therein in a manner that resists movement of the elongate device in relation to the sleeve; and fixing the anchor to a tissue within the body. ### Claim 16 (depends on 15) A method as in claim 15, further comprising adjusting a level of engagement by increasing or decreasing the amount of twist. ### Claim 17 (depends on 15) A method as in claim 15, wherein rotating offsets the first and second supports by 90-180 degrees. ### Claim 18 (depends on 15) A method as in claim 15, wherein rotating is in increments of 10 degrees. ### Claim 19 (depends on 15) A method as in claim 15, wherein the rotating step is achieved by actuating the anchor, wherein the first and second supports are biased to rotate upon actuation causing twisting of the sleeve in a relaxed state. ### Claim 20 (depends on 15) A method as in claim 15, wherein the elongate device exits an epidural space at an epidural access point, and wherein fixing the anchor comprises suturing the anchor to tissue near the epidural access point.