# US 11,439,551 B2 · Lateral transfer mattress and rotational positioning device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,439,551 B2 - Document ID: US11439551B2 - Status: Granted - Kind: B2 - Application number: 16/739,782 - Filed: 2020-01-10 - Published: 2020-05-14 - Granted: 2022-09-13 - Earliest claimed: 2017-08-11 - Assignees: D.T. Davis Enterprises, Ltd. - Applicants: D.T. Davis Enterprises, Ltd. - Inventors: David T. Davis - Web page: https://patentgrep.com/patent/US11439551B2 ## CPC - A61G 7/05769: {with inflatable chambers} - A61G 7/1028: {by a support moving on air cushion} - A61G 7/001: {with means for turning-over the patient} - A61G 7/05776: {with at least two groups of alternately inflated chambers} - A61G 7/1021: {Inflatable cushions} - A61G 7/1036: {facilitating loading and unloading of the patient, e.g. using flaps or additional tilting} - A61G 2200/32: lying - A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00) ## Abstract An inflatable transfer mattress includes a top panel, a bottom panel having a perimeter sealingly coupled to a perimeter of the top panel to define an internal volume therebetween, and a rotational positioning device coupled to the top panel. The internal volume is configured to receive an air flow therein. The rotational positioning device is positioned outside of the internal volume and includes at least one inflatable bladder configured to be inflated from a deflated state to an inflated state. The bladder portion is configured to rotate a patient to a predetermined angle with respect to the top panel in the inflated state. ## Claims ### Claim 1 An inflatable transfer mattress, comprising: a top panel; a bottom panel having a perimeter sealingly coupled to a perimeter of the top panel to define an internal volume therebetween, wherein the internal volume is configured to receive a first air flow therein, wherein the first air flow is configured to inflate the internal volume to support a patient in contact with the top panel; and a plurality of inflatable pontoons positioned within the internal volume, wherein each of the plurality of inflatable pontoons is configured to be transitioned from a deflated state in which each of the plurality of inflatable pontoons are flat to an inflated state in which each of the plurality of inflatable pontoons define a cylindrical cross-section, wherein each of the plurality of inflatable pontoons is fluidically isolated from the internal volume, wherein at least one of the plurality of inflatable pontoons is configured to receive a second air flow configured to inflate at least one of the plurality of inflatable pontoons, and wherein each of the plurality of inflatable pontoons is configured to act as a stringer when in a deflated state. ### Claim 2 (depends on 1) The inflatable transfer mattress of claim 1, wherein the plurality of inflatable pontoons comprises a first set of inflatable pontoons positioned on a first side of a centerline of the top panel and a second set of inflatable pontoons positioned on a second side of the centerline. ### Claim 3 (depends on 2) The inflatable transfer mattress of claim 2, wherein each inflatable pontoon in the first set of inflatable pontoons is in fluid communication and each inflatable pontoon in the second set of inflatable pontoons is in fluid communication. ### Claim 4 (depends on 2) The inflatable transfer mattress of claim 2, wherein each inflatable pontoon in the first set of inflatable pontoons is coupled to a first air flow path having a proximal end coupled to at least one of the plurality of inflatable pontoons in the first set of inflatable pontoons and a distal end, wherein each inflatable pontoon in the second set of inflatable pontoons is coupled to a second air flow path having a proximal end coupled to at least one of the plurality of inflatable pontoons in the second set of inflatable pontoons and a distal end, wherein the distal end of each of the first air flow path and the second air flow path is configured to extend beyond the perimeter of the bottom panel. ### Claim 5 (depends on 4) The inflatable transfer mattress of claim 4, comprising a first valve formed integrally with the first air flow path adjacent the distal end. ### Claim 6 (depends on 1) The inflatable transfer mattress of claim 1, wherein each of the plurality of inflatable pontoons is coupled to the top panel along a first line and the bottom panel along a second line. ### Claim 7 (depends on 1) The inflatable transfer mattress of claim 1, wherein each of the plurality of inflatable pontoons is coupled to an adjacent one of the plurality inflatable pontoons. ### Claim 8 (depends on 1) The inflatable transfer mattress of claim 1, wherein the bottom panel defines a plurality of holes configured to provide air flow from the internal volume to an area located between the bottom panel and a surface. ### Claim 9 (depends on 1) The inflatable transfer mattress of claim 1, wherein inflation of at least one of the plurality of inflatable pontoons is configured to rotate a patient to a predetermined rotational angle with respect to the top panel. ### Claim 10 (depends on 9) The inflatable transfer mattress of claim 9, wherein the predetermined angle is an angle in a range of 0-30 degrees. ### Claim 11 (depends on 1) The inflatable transfer mattress of claim 1, comprising a non-woven patient contact layer positioned over the top panel, wherein the non-woven patient contact layer is coupled to the top panel. ### Claim 12 An inflatable transfer mattress, comprising: a top panel; a bottom panel having a perimeter sealingly coupled to a perimeter of the top panel to define an internal volume therebetween, wherein the internal volume is configured to receive a first air flow therein, wherein the first air flow is configured to inflate the internal volume to support a patient in contact with the top panel; and a plurality of inflatable pontoons positioned within the internal volume, wherein each of the plurality of inflatable pontoons is configured to be transitioned from a deflated state in which each of the plurality of inflatable pontoons are flat to an inflated state in which each of the plurality of inflatable pontoons define a cylindrical cross-section by a second air flow, wherein each of the plurality of inflatable pontoons is coupled to the top panel along a first line and the bottom panel along a second line, and wherein each of the plurality of inflatable pontoons is coupled to an adjacent one of the plurality inflatable pontoons, and wherein each of the plurality of inflatable pontoons is fluidically isolated from the internal volume, and wherein each of the plurality of inflatable pontoons is configured to act as a stringer when in a deflated state. ### Claim 13 (depends on 12) The inflatable transfer mattress of claim 12, wherein the plurality of inflatable pontoons comprises a first set of inflatable pontoons positioned on a first side of a centerline of the top panel and a second set of inflatable pontoons positioned on a second side of the centerline. ### Claim 14 (depends on 13) The inflatable transfer mattress of claim 13, wherein each inflatable pontoon in the first set of inflatable pontoons is in fluid communication and each inflatable pontoon in the second set of inflatable pontoons is in fluid communication. ### Claim 15 (depends on 13) The inflatable transfer mattress of claim 13, wherein each set of inflatable pontoons is coupled to an air flow path having a proximal end coupled to at least one of the plurality of inflatable pontoons in the set of inflatable pontoons and a distal end, wherein the distal end is configured to extend beyond the perimeter of the bottom panel. ### Claim 16 (depends on 12) The inflatable transfer mattress of claim 12, wherein inflation of at least one of the plurality of inflatable pontoons is configured to rotate a patient to a predetermined rotational angle with respect to the top panel. ### Claim 17 A method of positioning a patient, comprising: positioning an inflatable transfer mattress on a first surface, the inflatable transfer mattress comprising a top panel, a bottom panel having a perimeter sealingly coupled to a perimeter of the top panel to define an internal volume therebetween, wherein the internal volume is configured to receive a first air flow configured to inflate the internal volume to support a patient in contact with the top panel, and a plurality of inflatable pontoons positioned within the internal volume, wherein each of the plurality of inflatable pontoons is configured to be transitioned from a deflated state in which each of the plurality of inflatable pontoons are flat to an inflated state in which each of the plurality of inflatable pontoons define a cylindrical cross-section, and wherein each of the plurality of inflatable pontoons is fluidically isolated from the internal volume, wherein at least one of the plurality of inflatable pontoons is configured to receive a second air flow configured to inflate at least one of the plurality of inflatable pontoons, and wherein each of the plurality of inflatable pontoons is configured to act as a stringer when in a deflated state; positioning a patient on the inflatable transfer mattress; and inflating a first set of the plurality of inflatable pontoons to rotate the patient to a first predetermined rotational angle with respect to the top panel of the inflatable transfer mattress, wherein the first set of the plurality of inflatable pontoons is inflated by an air supply coupled to a valve formed integrally with an air flow path of the first set of the plurality of inflatable pontoons. ### Claim 18 (depends on 17) The method of claim 17, comprising: deflating the first set of the plurality of inflatable pontoons to return the patient to an initial position; and inflating a second set of the plurality of inflatable pontoons to rotate the patient to a second predetermined rotational angle with respect to the top panel of the inflatable transfer mattress. ### Claim 19 (depends on 17) The method of claim 17, comprising: providing the first air flow to the internal volume defined between the top panel and the bottom panel to inflate the inflatable transfer mattress, wherein the bottom panel defines a plurality of holes sized and configured to provide air flow to a volume positioned between the bottom panel and the first surface; and sliding the inflatable transfer mattress from the first surface to a second surface, wherein the air flow to the volume positioned between the bottom panel and the first surface reduces friction between the inflatable transfer mattress, the first surface, and the second surface.