# US 2010/0168523 A1 · Magnetic retraction device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0168523 A1 - Document ID: US20100168523A1 - Status: Published application - Kind: A1 - Application number: 12/648,750 - Filed: 2009-12-29 - Published: 2010-07-01 - Earliest claimed: 2008-12-30 - Assignees: Cook Medical Technologies LLC - Inventors: RICHARD W. DUCHARME - Web page: https://patentgrep.com/patent/US20100168523A1 ## CPC - A61B 17/0218: {for minimally invasive surgery (A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)} - A61B 34/73: {Manipulators for magnetic surgery} - A61B 2017/00557: {inflatable (A61B2017/22051 takes precedence)} - A61B 2017/00876: {magnetic} - A61B 2017/0225: {flexible, e.g. fabrics, meshes, or membranes} - A61B 2017/22062: {to be filled with liquid} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A magnetic retraction device is provided that may be used to manipulate organs and tissue. The device includes a magnetic agent, at least one inflatable member configured to contain the magnetic agent, and a magnetic device. The inflatable member can be disposed on an elongate member adapted for delivery into a patient lumen. The inflatable member can be interconnected with one or more additional inflatable members by a sling. ## Claims ### Claim 1 A system for manipulating tissue, comprising: a magnetic agent; an inflatable member configured to contain the magnetic agent; a magnetic device configured to manipulate the position of the inflatable member containing the magnetic agent, wherein the inflatable member containing the magnetic agent is configured to manipulate the position of a tissue in response to a magnetic field emitted by the magnetic device; and an elongate member comprising a proximal portion, a distal portion, and a lumen disposed through the proximal portion and at least partially through the distal portion, the lumen fluidly interconnected with the inflatable member. ### Claim 2 (depends on 1) The system of claim 1 wherein the elongate member further comprises a second lumen disposed through the proximal portion and the distal portion, the second lumen configured to receive a wire guide therethrough. ### Claim 3 (depends on 1) The system of claim 1, further comprising a sheath adapted to contain the elongate member. ### Claim 4 (depends on 1) The system of claim 1, further comprising a sling disposed on the distal portion of the elongate member. ### Claim 5 (depends on 4) The system of claim 4 further comprising an expansion element connected to the sling, wherein the expansion element is adapted to radially expand the sling. ### Claim 6 (depends on 5) The system of claim 5 wherein the expansion element comprises a superelastic material. ### Claim 7 (depends on 5) The system of claim 5 wherein the expansion element comprises a wire anchored at the distal portion and operatively connected at the proximal portion, the wire having a segment disposed external the elongate member at the distal portion, wherein the sling is connected to the segment of wire disposed external the elongate member, wherein the wire can be advanced longitudinally toward the distal portion, and wherein the sling radially expands upon advancement of the wire toward the distal portion. ### Claim 8 (depends on 4) The system of claim 4 wherein the sling comprises a magnetic agent. ### Claim 9 (depends on 4) The system of claim 4 wherein the sling comprises a superelastic material. ### Claim 10 (depends on 4) The system of claim 4 wherein the sling is connected to an inflatable member configured to contain the magnetic agent. ### Claim 11 A system for manipulating tissue, comprising: a magnetic agent; a plurality of inflatable members interconnected by a sling and configured to contain the magnetic agent; and a magnetic device configured to manipulate the position of the plurality of inflatable members containing the magnetic agent, wherein the plurality of inflatable members containing the magnetic agent are configured to manipulate the position of a tissue in response to a magnetic field emitted by the magnetic device. ### Claim 12 (depends on 11) The system of claim 11 wherein the system comprises two inflatable members. ### Claim 13 (depends on 11) The system of claim 11 wherein the system comprises three inflatable members. ### Claim 14 (depends on 11) The system of claim 11 wherein at least one of the plurality of inflatable members comprises a valve system configured to detachedly connect to an inflation device. ### Claim 15 (depends on 11) The system of claim 11 wherein the sling comprises a superelastic material. ### Claim 16 (depends on 11) The system of claim 11 wherein the sling comprises a magnetic agent. ### Claim 17 A method of manipulating a target tissue, comprising: introducing into a patient at least one inflatable member adapted to contain a magnetic agent; positioning the inflatable member so as to engage a target tissue; introducing a magnetic agent into the inflatable member; and applying a magnetic field to the inflatable member containing the magnetic agent so as to manipulate the position of the target tissue. ### Claim 18 (depends on 17) The method of claim 17 wherein the inflatable member is disposed on an elongate member. ### Claim 19 (depends on 17) The method of claim 17 wherein the inflatable member is interconnected to one or more additional inflatable members by a sling, the additional inflatable members each configured to contain a magnetic agent, the sling configured to engage the target tissue. ### Claim 20 (depends on 17) The method of claim 17 wherein the magnetic agent comprises at least one of a ferrofluid or a magnetorheological fluid.