# US 4,004,298 A · Magnetically aligned releasable connector > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,004,298 A - Document ID: US4004298A - Status: Granted - Kind: A - Application number: 05/563,360 - Filed: 1975-03-31 - Granted: 1977-01-25 - Earliest claimed: 1975-03-31 - Assignees: Sinai Hospital of Detroit - Inventors: Paul S. Freed - Web page: https://patentgrep.com/patent/US4004298A ## CPC - A61M 39/0247: {Transcutaneous or percutaneous access sites to the inside of the body} - A61M 2039/0264: {with multiple inlets or multiple outlets} - A61M 2039/027: {having a particular valve, seal or septum} - A61M 2039/0288: {protectors, caps or covers therefor} - A61M 2039/0294: {having a specific shape matching the shape of a tool to be inserted therein, e.g. for easy introduction, for sealing purposes, guide} - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract An improved connector having mating connector members with at least two paths in each connector member. Magnets are positioned in each connector to generate spatially oriented magnetic fields; the fields for one connector member being complementary to those of the other connector member. As the connector members are moved toward each other, the complementary fields align the members and maintain a releasable connection therebetween with the paths in each connector member properly aligned. The complementary magnetic fields preclude misalignment and provide quick release of the connector members when a sufficiently strong external force is applied. ## Claims ### Claim 1 In a connector including first and second connector means each having a plurality of paths therethrough, the connector members adapted to be secured together to align the corresponding paths in each connector member, each of said connector members having a first end, the first ends of the connector members to be secured together, each of said connector members including a plurality of magnets electrically insulated from each other, the magnets in said first connector member being positioned to generate magnetic fields of a first spatially oriented pattern; the magnets in said second connector member being positioned to generate magnetic fields of a second spatially oriented pattern; at least one magnet in each connector member also being an electrical path; the improvement comprising: each connector member including a plate of magnetically conductive material, said plate positioned in said connector member opposed from said first end of said connector member, said plate for reducing the magnetic reluctance in each connector member at least one fluid path in each connector member, each fluid path having an outlet port at said connector member first end; and said first and second spatially oriented patterns being complementary so that the forces of magnetic attraction hold the first ends of the connector members together with the fluid path and electrical path of each connector member properly aligned, and the forces of magnetic repulsion precluding misalignment of said paths. ### Claim 2 (depends on 1) The invention as defined in claim 1, wherein each connector member includes three magnets arranged symmetrically with respect to an axis perpendicular to the first end of said connector member and one magnet having a polarity opposed to the polarity of the other two magnets at said first end. ### Claim 3 (depends on 1) The invention as defined in claim 1, wherein each connector member includes at least three magnets arranged asymmetrically with respect to an axis perpendicular to said first end of said connector member. ### Claim 4 (depends on 1) The invention as defined in claim 1 and further including means for adjusting the proximity of one of said plates relative to the magnets to change the magnetic reluctance of the magnetic paths. ### Claim 5 (depends on 1) The invention as defined in claim 1 and further including a resilient sealing ring at the outlet port of said fluid path in at least one of said connectors, said resilient sealing ring for providing a tight seal when said fluid paths are properly aligned under the influence of said complementary spatially oriented magnetic fields. ### Claim 6 (depends on 1) The invention as defined in claim 1 and further including a sealing cap of a magnetically permeable material, said sealing cap having a resilient gasket therein for forming a tight seal over said outlet port of one of said connector members when said connector members are separate and not in use, thereby protecting each connector member from moisture and foreign particles and for completing the magnetic paths in said connector member. ### Claim 7 (depends on 1) The invention as defined in claim 1 wherein each of said magnets includes a cap at said first end, the caps associated with the magnets in said first connector member having projections extending outwardly therefrom and the caps associated with the magnets in said second connector member having indentations to receive the projections, said indentations and projections to provide a mechanical interlock between said first and second connector members to resist sliding apart of said connector members.