Patents by Inventor Richard W. Raburn

Richard W. Raburn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20170027791
    Abstract: An air inflatable mattress and mattress coverlet are provided for the prevention and treatment of decubitus ulcers (i.e., pressure sores or bedsores). The mattress incorporates a user selectable static or alternating air powered support surface for more uniformly redistributing pressure exerted on a patient's skin. The mattress coverlet encompasses a low air loss feature independent of the mattress's user selectable air powered support surface. Such low air loss feature provides a patient contact surface exhibiting a high moisture vapor transfer ratio in conjunction with a forced air flow to aid in reducing the moisture and heat near the patient's body. Both the mattress and mattress coverlet are driven by an external control system which houses the user controls, as well as the necessary pumps, regulators, and valving.
    Type: Application
    Filed: September 6, 2016
    Publication date: February 2, 2017
    Inventors: Wanda C. McKnight, Richard W. Raburn, Russell J. Weston, Joseph A. Benedict
  • Publication number: 20170007482
    Abstract: An air inflatable mattress and mattress coverlet are provided for the prevention and treatment of decubitus ulcers (i.e., pressure sores or bedsores). The mattress incorporates a user selectable static or alternating air powered support surface for more uniformly redistributing pressure exerted on a patient's skin. The mattress coverlet encompasses a low air loss feature independent of the mattress's user selectable air powered support surface. Such low air loss feature provides a patient contact surface exhibiting a high moisture vapor transfer ratio in conjunction with a forced air flow to aid in reducing the moisture and heat near the patient's body. Both the mattress and mattress coverlet are driven by an external control system which houses the user controls, as well as the necessary pumps, regulators, and valving.
    Type: Application
    Filed: September 6, 2016
    Publication date: January 12, 2017
    Inventors: Wanda C. McKnight, Richard W. Raburn, Russell J. Weston, Joseph A. Benedict
  • Patent number: 8893340
    Abstract: A mattress cover is disclosed for redirecting shear on a patient's skin away from the areas of the body relatively more likely to develop decubitus ulcers. The mattress cover includes an upper portion designed to cover the topside of a mattress, and at least one shear transfer zone attached to an underside of the upper portion of the mattress cover. The shear transfer zone(s) may be made of a low shear material so as to create a low friction interface between the mattress and the mattress cover to reduce shear forces exerted by the mattress. Additionally, the shear transfer zone(s) may be arranged such that a large portion of the shear forces exerted by the mattress can be redirected to areas of the body that are relatively less likely to develop decubitus ulcers.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: November 25, 2014
    Assignee: Span-America Medical Systems, Inc.
    Inventors: James R. O'Reagan, Richard W. Raburn
  • Publication number: 20140208520
    Abstract: An air inflatable mattress and mattress coverlet are provided for the prevention and treatment of decubitus ulcers (i.e., pressure sores or bedsores). The mattress incorporates a user selectable static or alternating air powered support surface for more uniformly redistributing pressure exerted on a patient's skin. The mattress coverlet encompasses a low air loss feature independent of the mattress's user selectable air powered support surface. Such low air loss feature provides a patient contact surface exhibiting a high moisture vapor transfer ratio in conjunction with a forced air flow to aid in reducing the moisture and heat near the patient's body. Both the mattress and mattress coverlet are driven by an external control system which houses the user controls, as well as the necessary pumps, regulators, and valving.
    Type: Application
    Filed: February 11, 2014
    Publication date: July 31, 2014
    Inventors: Wanda J. Totton, Richard W. Raburn, Russell J. Weston, Joseph A. Benedict
  • Publication number: 20130247304
    Abstract: A mattress cover is disclosed for redirecting shear on a patient's skin away from the areas of the body relatively more likely to develop decubitus ulcers. The mattress cover includes an upper portion designed to cover the topside of a mattress, and at least one shear transfer zone attached to an underside of the upper portion of the mattress cover. The shear transfer zone(s) may be made of a low shear material so as to create a low friction interface between the mattress and the mattress cover to reduce shear forces exerted by the mattress. Additionally, the shear transfer zone(s) may be arranged such that a large portion of the shear forces exerted by the mattress can be redirected to areas of the body that are relatively less likely to develop decubitus ulcers.
    Type: Application
    Filed: May 14, 2013
    Publication date: September 26, 2013
    Inventors: James R. O'Reagan, Richard W. Raburn
  • Patent number: 8438682
    Abstract: A mattress cover is disclosed for redirecting shear on a patient's skin away from the areas of the body relatively more likely to develop decubitus ulcers. The mattress cover includes an upper portion designed to cover the topside of a mattress, and at least one shear transfer zone attached to an underside of the upper portion of the mattress cover. The shear transfer zone(s) may be made of a low shear material so as to create a low friction interface between the mattress and the mattress cover to reduce shear forces exerted by the mattress. Additionally, the shear transfer zone(s) may be arranged such that a large portion of the shear forces exerted by the mattress can be redirected to areas of the body that are relatively less likely to develop decubitus ulcers.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: May 14, 2013
    Assignee: Span-America Medical Systems, Inc.
    Inventors: James R. O'Reagan, Richard W. Raburn
  • Publication number: 20110131733
    Abstract: A mattress cover is disclosed for redirecting shear on a patient's skin away from the areas of the body relatively more likely to develop decubitus ulcers. The mattress cover includes an upper portion designed to cover the topside of a mattress, and at least one shear transfer zone attached to an underside of the upper portion of the mattress cover. The shear transfer zone(s) may be made of a low shear material so as to create a low friction interface between the mattress and the mattress cover to reduce shear forces exerted by the mattress. Additionally, the shear transfer zone(s) may be arranged such that a large portion of the shear forces exerted by the mattress can be redirected to areas of the body that are relatively less likely to develop decubitus ulcers.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 9, 2011
    Applicant: SPAN-AMERICA MEDICAL SYSTEMS, INC.
    Inventors: James R. O'Reagan, Richard W. Raburn
  • Patent number: 7296315
    Abstract: An air inflatable mattress and mattress coverlet are provided for the prevention and treatment of decubitus ulcers (i.e., pressure sores or bedsores). The mattress incorporates a user selectable static or alternating air powered support surface for more uniformly redistributing pressure exerted on a patient's skin. The mattress coverlet encompasses a low air loss feature independent of the mattress's user selectable air powered support surface. Such low air loss feature provides a patient contact surface exhibiting a high moisture vapor transfer ratio in conjunction with a forced air flow to aid in reducing the moisture and heat near the patient's body. Both the mattress and mattress coverlet are driven by an external control system which houses the user controls, as well as the necessary pumps, regulators, and valving.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: November 20, 2007
    Assignee: Span-America Medical Systems, Inc.
    Inventors: Wanda J. Totton, Richard W. Raburn, Russell J. Weston, Joseph Benedict
  • Patent number: 6848138
    Abstract: Multiple varieties of patient support surfaces are presented with a common modular assembly primarily including a perimeter chassis and integrated upper support element. Perimeter bolsters provide relatively firmer support for gently prompting a patient towards the center of the bed, without obstructing regular entry and egress. The added stability facilitates safer transfers and better sitting at the edge of the bed. Pressure redistribution air cylinders (turned either longitudinally or laterally) are captured by shaped, slotted inner bolsters and underside arches of an integral foam topper. Each foam topper integrally incorporated may include a sloping heel pressure relief section for redistributing load to relatively more pressure-tolerant lower legs and calves.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: February 1, 2005
    Inventors: Edmund K. Maier, Richard W. Raburn, Mark D. Chastain
  • Patent number: 6782574
    Abstract: An air inflatable mattress and mattress coverlet are provided for the prevention and treatment of decubitus ulcers (i.e., pressure sores or bedsores). The mattress incorporates a user selectable static or alternating air powered support surface for more uniformly redistributing pressure exerted on a patient's skin. The mattress coverlet encompasses a low air loss feature independent of the mattress's user selectable air powered support surface. Such low air loss feature provides a patient contact surface exhibiting a high moisture vapor transfer ratio in conjunction with a forced air flow to aid in reducing the moisture and heat near the patient's body. Both the mattress and mattress coverlet are driven by an external control system which houses the user controls, as well as the necessary pumps, regulators, and valving.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: August 31, 2004
    Assignee: Span-America Medical Systems, Inc.
    Inventors: Wanda J. Totton, Richard W. Raburn, Russell J. Weston, Joseph Benedict
  • Publication number: 20020073489
    Abstract: An air inflatable mattress and mattress coverlet are provided for the prevention and treatment of decubitus ulcers (i.e., pressure sores or bedsores). The mattress incorporates a user selectable static or alternating air powered support surface for more uniformly redistributing pressure exerted on a patient's skin. The mattress coverlet encompasses a low air loss feature independent of the mattress's user selectable air powered support surface. Such low air loss feature provides a patient contact surface exhibiting a high moisture vapor transfer ratio in conjunction with a forced air flow to aid in reducing the moisture and heat near the patient's body. Both the mattress and mattress coverlet are driven by an external control system which houses the user controls, as well as the necessary pumps, regulators, and valving.
    Type: Application
    Filed: July 18, 2001
    Publication date: June 20, 2002
    Applicant: SPAN-AMERICA MEDICAL SYSTEM, INC.
    Inventors: Wanda J. Totton, Richard W. Raburn, Russell J. Weston, Joseph Benedict
  • Patent number: 6256819
    Abstract: A foam cushion suitable for use such as with a wheelchair provides a combination of general pressure relief and positioning control over legs of a patient possibly otherwise having reduced or impaired motor control skills. A desired leg position is achieved by separating the legs and supporting them in a generally parallel position. Two base pieces have predetermined upper profiles and are glued to an upper support element having integrated cubic elements for pressure relief. Channels between adjacent cubic elements facilitate flexure of the upper element to conform to the contours of the two base pieces. Relatively high ILD foam characteristics and relatively high foam densities combined with the subject structure give good results for support and for product life, including compression fatigue considerations.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: July 10, 2001
    Assignee: Span-America Medical Systems, Inc.
    Inventors: Edmund K. Maier, Richard W. Raburn
  • Patent number: 6223369
    Abstract: Multiple varieties of patient support surfaces are presented with a common modular assembly primarily including a perimeter chassis and integrated upper support element. Perimeter bolsters provide relatively firmer support for gently prompting a patient towards the center of the bed, without obstructing regular entry and egress. The added stability facilitates safer transfers and better sitting at the edge of the bed. Pressure redistribution air cylinders (turned either longitudinally or laterally) are captured by shaped, slotted inner bolsters aid underside arches of an integral foam topper. All such features work collectively to cradle and surround the air cylinders. The resulting interlocking, integrated design provides flexible progressive support while maximizing structural integrity. Different arrangements of air cylinders and static or dynamic performance thereof, either non-powered or powered, permit different embodiments to be created using the same modular assembly approach.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: May 1, 2001
    Assignee: Span-America Medical Systems, Inc.
    Inventors: Edmund K. Maier, Richard W. Raburn, Mark D. Chastain
  • Patent number: 6036271
    Abstract: A seating system is designed for self-adjusting pressure relief for use with wheelchairs and other generally confined seating arrangements. One or more support chambers filled with resilient foam and a fluid such as air are arranged on an upper support surface. A self-adjusting reservoir is provided and arranged in fluid communication with the chamber. A constant force spring cooperates with a pivoting plate arrangement and acts on the reservoir so as to balance fluid pressure between the reservoir and the support chamber with a patient received thereon. In some embodiments, three fluid/resilient foam chambers may be provided for independent operation with three respective adjustable reservoirs. In other embodiments, fluid filled chambers may be operatively associated with respective reservoirs and pivoting actuation plates specially adapted to fit below a wheelchair seat without interfering with the wheelchair support structure, or specially adapted to be carried in a pack on the wheelchair seat back.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: March 14, 2000
    Assignee: Span-America Medical Systems, Inc.
    Inventors: John W. Wilkinson, Richard W. Raburn
  • Patent number: 5797155
    Abstract: A seating system is designed for self-adjusting pressure relief for use with wheelchairs and other generally confined seating arrangements. One or more support chambers filled with resilient foam and a fluid such as air are arranged on an upper support surface. Respective self-adjusting reservoirs are provided and arranged in fluid communication (such as through plastic tubing) with various of the chambers. As elastic band or similar is placed surrounding each respective reservoir, to compensate for, and reach equilibrium with, air pressure differences caused therein by the amount of force or loading received on the corresponding respective support chamber. The physical placement of the reservoir arrangements may be accommodated within an enclosing cover, so that an integrally formed self-contained wheelchair cushion or similar is provided with self-adjusting features, operative in respective zones of the support surface.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: August 25, 1998
    Assignee: Span-America Medical Systems, Inc.
    Inventors: Edmund K. Maier, Richard W. Raburn
  • Patent number: 5699570
    Abstract: A pressure relief valve vent line mattress system utilizes a self-adjusting approach with a single air source to obtain in combination a low air loss feature for beneficial cooling and drying of a patient's skin. A single air supply source outputs a predetermined positive flow of air into one or more patient air support bladders. An air distribution manifold received within a mattress body receives and disperses overflow pressure routed thereto from the patient air support bladders via an air passageway having a first pressure relief valve with an established set point. A second pressure relief valve is associated with a pump return line adjunct to the constant air flow pump. The net effect is to disperse overflow pressure from the mattress bladders (tending to keep such bladders at a constant pressure) while providing low air loss through the mattress for patient cooling and drying effects, all utilizing a single air flow source.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: December 23, 1997
    Assignee: Span-America Medical Systems, Inc.
    Inventors: John W. Wilkinson, Richard W. Raburn
  • Patent number: 5652985
    Abstract: A pressure relief support system utilizes a self-adjusting approach to maintaining generally constant pressure in fluid support bladders. A constant force, such as from a constant force linear spring or from a counterweight system, is applied directly to a fluid support bladder or to a reservoir in fluid communication with such bladder. Plural self-adjusting arrangements may be provided in a single device for fabricating a support body with sectionalized support. Such arrangements may be incorporated into mattress support systems or into seating arrangements or other alternative uses. By appropriately selecting system components, such as the amount of the constant force applied, the original volume of fluid to which the force is applied, and the reservoir size, pressure dispersion for a patient or supported object of any type may be controlled at a predetermined generally constant point.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: August 5, 1997
    Assignee: Span-America Medical Systems, Inc.
    Inventors: John W. Wilkinson, Richard W. Raburn, Thomas S. Hargest
  • Patent number: D388995
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: January 13, 1998
    Assignee: Span-America Medical Systems, Inc.
    Inventors: Thomas S. Hargest, Richard W. Raburn
  • Patent number: D390404
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: February 10, 1998
    Assignee: Span-America Medical Systems, Inc.
    Inventors: Thomas S. Hargest, Richard W. Raburn
  • Patent number: D394578
    Type: Grant
    Filed: June 23, 1992
    Date of Patent: May 26, 1998
    Assignee: Span-America Medical Systems, Inc.
    Inventor: Richard W. Raburn