# US 2013/0158660 A1 · Medical Devices, Apparatuses, Systems, and Methods with Magnetic Shielding > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0158660 A1 - Document ID: US20130158660A1 - Status: Published application - Kind: A1 - Application number: 13/331,481 - Filed: 2011-12-20 - Published: 2013-06-20 - Earliest claimed: 2011-12-20 - Inventors: Richard A. Bergs; Heather E. Beardsley; Jeffrey A. Cadeddu; Raul Fernandez; Daniel J. Scott - Web page: https://patentgrep.com/patent/US20130158660A1 ## CPC - A61B 34/70: {Manipulators specially adapted for use in surgery} - A61B 17/00234: {for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)} - A61B 34/73: {Manipulators for magnetic surgery} - A61B 2017/00283: {with a device releasably connected to an inner wall of the abdomen during surgery, e.g. an illumination source} - A61B 2017/00876: {magnetic} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract Embodiments of apparatuses, and methods and systems including apparatuses, configured to be magnetically coupled to a medical device within a body cavity of a patient. Some embodiments include one or more elements comprising at least one of a magnetically-attractive and magnetically-chargeable material; and a bumper extending around the one or more elements and configured to reduce the strength of a magnetic field of the one or more elements. ## Claims ### Claim 1 An apparatus comprising: a platform configured to be magnetically coupled to a medical device disposed within a body cavity of a patient through a tissue, the platform comprising: one or more elements comprising at least one of a magnetically-attractive material and a magnetically-chargeable material; and a bumper extending around the one or more elements, the bumper comprising: a magnetically-permeable material spaced apart from the one or more elements, the magnetically-permeable material configured to reduce the strength of a magnetic field of the one or more elements in at least one direction outside the bumper; and a magnetically-inert material surrounding at least a portion of the magnetically permeable material. ### Claim 2 (depends on 1) The apparatus of claim 1, where in at least one point one the bumper, a cross-sectional area of the non-magnetic material is greater than a cross-sectional area of the magnetically-permeable material. ### Claim 3 (depends on 2) The apparatus of claim 2, where in a majority the bumper, the cross-sectional area of the non-magnetic material is greater than the cross-sectional area of the magnetically permeable bumper. ### Claim 4 (depends on 1) The apparatus of claim 1, where each of the one or more elements has a square cross-sectional shape. ### Claim 5 (depends on 1) The apparatus of claim 1, where each of the one or more elements comprises a magnet. ### Claim 6 (depends on 1) The apparatus of claim 1, where the bumper is spaced apart from an outer surface of the one or more elements by a substantially constant distance. ### Claim 7 An apparatus comprising: a platform configured to be magnetically coupled to a medical device disposed within a body cavity of a patient through a tissue, the platform comprising: one or more elements comprising at least one of a magnetically-attractive material and a magnetically-chargeable material; and a bumper extending around the one or more elements, the bumper comprising: a magnetically-permeable material spaced apart from the one or more elements, the magnetically-permeable material configured to reduce the strength of a magnetic field of the one or more elements in at least one direction outside the bumper. ### Claim 8 (depends on 7) The apparatus of claim 7, where the bumper further comprises a magnetically-inert material surrounding at least a portion of the magnetically-permeable material. ### Claim 9 (depends on 7) The apparatus of claim 7, where each of the one or more elements has a square cross-sectional shape. ### Claim 10 (depends on 7) The apparatus of claim 7, where each of the one or more elements comprises a magnet. ### Claim 11 (depends on 7) The apparatus of claim 7, where the bumper is spaced apart from an outer surface of the one or more elements by a substantially constant distance. ### Claim 12 An apparatus comprising: a platform configured to be magnetically coupled to a medical device disposed within a body cavity of a patient through a tissue, the platform comprising: two or more elements each comprising at least one of a magnetically-attractive material and a magnetically-chargeable material; and a bumper extending around the two or more elements, the bumper comprising: a magnetically-permeable material spaced apart from the two or more elements, the magnetically-permeable material configured to reduce the strength of a magnetic field of the one or more elements in at least one direction outside the bumper. ### Claim 13 (depends on 12) The apparatus of claim 12, where the bumper further comprises a magnetically-inert material surrounding at least a portion of the magnetically-permeable material. ### Claim 14 (depends on 12) The apparatus of claim 12, where each of the two or more elements has a square cross-sectional shape. ### Claim 15 (depends on 12) The apparatus of claim 12, where each of the two or more elements comprises a magnet. ### Claim 16 (depends on 15) The apparatus of claim 15, where the two or more elements comprises two elements having substantially opposite magnetic orientations. ### Claim 17 (depends on 12) The apparatus of claim 12, where the bumper is spaced apart from an outer surface of the two or more elements by a substantially constant distance. ### Claim 18 (depends on 1) The apparatus of claim 1, where the magnetically permeable material of the bumper has a substantially constant cross-sectional shape. ### Claim 19 (depends on 18) The apparatus of claim 18, where the cross-sectional shape is substantially rectangular. ### Claim 20 (depends on 1) The apparatus of claim 1, where the apparatus is disposed outside a body cavity of a patient and is magnetically coupled to a medical device within the body cavity. ### Claim 21 A system comprising: a first platform configured to be inserted within a body cavity of a patient, the first platform comprising: one or more elements comprising at least one of a magnetically-attractive material and a magnetically-chargeable material; and a second platform configured to be magnetically coupled to the first platform through a tissue, the second platform comprising: one or more elements comprising at least one of a magnetically-attractive material and a magnetically-chargeable material; and a bumper extending around the one or more elements, the bumper comprising a magnetically-permeable material spaced apart from the one or more elements, the magnetically-permeable material configured to reduce the strength of a magnetic field of the one or more elements in at least one direction outside the bumper.