Patents by Inventor Chamara Gamhewage

Chamara Gamhewage 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).

  • Patent number: 10420865
    Abstract: A waste collection unit (40) with a primary display (106) on which information about the operation of the unit is presented. In addition to the primary display there is a light assembly (662) adjacent the fitting (614) to which a suction line is attached. The light assembly emits light of selectively colors or in a selected pattern based on an operation state of the waste collection unit.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: September 24, 2019
    Assignee: STRYKER CORPORATION
    Inventors: Stephen J. Reasoner, Robert W. Childers, Chamara Gamhewage, Michael W. Hall, Nathan K. Hogan, Brian J. MacLachlan, Michael J. Miller
  • Patent number: 10343102
    Abstract: A medical/surgical waste collection rover includes a first waste container disposed on a portable cart and receiving waste under the influence of a vacuum. A fluid measuring system includes a float element disposed within the first waste container, and a controller causing liquid in a reservoir disposed on the cart to prefill the first waste container and subject the float element to an initial lifting to a zero point level. The fluid measuring system determines a volume of contents within the first waste container based on a position of the float element relative to the zero point level. The fluid measuring system may include a sensor rod extending through the first waste container and a second waste container disposed on the cart and separated from the first waste container by a transfer valve. Methods of estimating the volume of liquid and/or medical/surgical waste within the waste container are also provided.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: July 9, 2019
    Assignee: STRYKER CORPORATION
    Inventors: Stephen J. Reasoner, Chamara Gamhewage, Glen D. Rocque
  • Publication number: 20180221804
    Abstract: A medical/surgical waste collection rover includes a first waste container disposed on a portable cart and receiving waste under the influence of a vacuum. A fluid measuring system includes a float element disposed within the first waste container, and a controller causing liquid in a reservoir disposed on the cart to prefill the first waste container and subject the float element to an initial lifting to a zero point level. The fluid measuring system determines a volume of contents within the first waste container based on a position of the float element relative to the zero point level. The fluid measuring system may include a sensor rod extending through the first waste container and a second waste container disposed on the cart and separated from the first waste container by a transfer valve. Methods of estimating the volume of liquid and/or medical/surgical waste within the waste container are also provided.
    Type: Application
    Filed: January 18, 2018
    Publication date: August 9, 2018
    Applicant: Stryker Corporation
    Inventors: Stephen J. Reasoner, Chamara Gamhewage, Glen D. Rocque
  • Publication number: 20160367732
    Abstract: A waste collection unit (40) with a primary display (106) on which information about the operation of the unit is presented. In addition to the primary display there is a light assembly (662) adjacent the fitting (614) to which a suction line is attached. The light assembly emits light of selectively colors or in a selected pattern based on an operation state of the waste collection unit.
    Type: Application
    Filed: August 31, 2016
    Publication date: December 22, 2016
    Inventors: Stephen J. Reasoner, Robert W. Childers, Chamara Gamhewage, Michael W. Hall, Nathan K. Hogan, Brian J. MacLachlan, Michael J. Miller, Grant T. Westphal, David S. Goldenberg
  • Patent number: 8852182
    Abstract: An electrosurgical system preferably used for denervation procedures of nerve tissue has a control unit and a pluggable electrode assembly. The electrode assembly has a disposable cannula and a preservable supply electrode assembly. The cannula has a tubular body that projects axially from a pointed distal end for piercing tissue to a proximal end engaged to a first coupling assembly of the cannula. The supply electrode assembly has a second coupling assembly and a supply electrode that projects axially and removably into a through-bore of the body when in an operating state. The first and second coupling assemblies are configured to releasably interlock to prevent clockwise and counterclockwise rotation of the supply electrode in the body.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: October 7, 2014
    Assignee: Stryker Corporation
    Inventors: Philip James Tullis, Chamara Gamhewage, Douglas Alan Staunton, Eland Cramlet, Nicole Fickes, Andy Staats
  • Patent number: 8740866
    Abstract: A waste collection and disposal system for use in health care facilities is provided. The system includes a mobile waste collection unit for moving between use areas in the health care facility to collect waste material generated during medical procedures including body fluids, body tissues, saline, etc. The waste collection unit includes stacked upper and lower waste containers for receiving the waste material. During use, the upper waste container can be emptied into the lower waste container for temporary storage. In addition, different vacuum levels can be provided in the waste containers during complex procedures. Once a user desires to empty the waste collection unit, the waste collection unit is wheeled to a docking station. At the docking station, the waste material is off-loaded to a waste drain and the waste collection unit is cleaned and rinsed for further use.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: June 3, 2014
    Assignee: Stryker Corporation
    Inventors: Stephen J. Reasoner, Chamara Gamhewage, Joseph P. Hepp, III
  • Publication number: 20110160723
    Abstract: An electrosurgical system preferably used for denervation procedures of nerve tissue has a control unit and a pluggable electrode assembly. The electrode assembly has a preferably disposable cannula and a preservable supply electrode assembly. The cannula has a tubular body that projects axially from a preferably pointed distal end for piercing tissue to a proximal end engaged to a first coupling assembly of the cannula. The body carries a first contact exposed directly to the nerve tissue and connected electrically to a terminal of the first coupling assembly. The supply electrode assembly has a second coupling assembly and a supply electrode that projects axially and removably into a through-bore of the body when the tool is in an operating state. The second coupling assembly carries a terminal that abuts the first coupling assembly when the coupling assemblies are mated.
    Type: Application
    Filed: March 8, 2011
    Publication date: June 30, 2011
    Applicant: STRYKER CORPORATION
    Inventors: Philip James Tullis, Chamara Gamhewage, Douglas Alan Staunton, Eland Cramlet, Nicole Fickes, Andy Staats
  • Patent number: 7918852
    Abstract: An electrosurgical system preferably used for denervation procedures of nerve tissue has a control unit and a pluggable electrode assembly. The electrode assembly has a preferably disposable cannula and a preservable supply electrode assembly. The cannula has a tubular body that projects axially from a preferably pointed distal end for piercing tissue to a proximal end engaged to a first coupling assembly of the cannula. The body carries a first contact exposed directly to the nerve tissue and connected electrically to a terminal of the first coupling assembly. The supply electrode assembly has a second coupling assembly and a supply electrode that projects axially and removably into a through-bore of the body when the tool is in an operating state. The second coupling assembly carries a terminal that abuts the first coupling assembly when the coupling assemblies are mated.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: April 5, 2011
    Assignee: Stryker Corporation
    Inventors: Philip James Tullis, Chamara Gamhewage, Douglas Alan Staunton, Eland Cramlet, Nicole Fickes, Andy Staats
  • Patent number: 7621898
    Abstract: A waste collection and disposal system for use in health care facilities is provided. The system includes a mobile waste collection unit for moving between use areas in the health care facility to collect waste material generated during medical procedures including body fluids, body tissues, saline, etc. The waste collection unit includes stacked upper and lower waste containers for receiving the waste material. During use, the upper waste container can be emptied into the lower waste container for temporary storage. In addition, different vacuum levels can be provided in the waste containers during complex procedures. Once a user desires to empty the waste collection unit, the waste collection unit is wheeled to a docking station. At the docking station, the waste material is off-loaded to a waste drain and the waste collection unit is cleaned and rinsed for further use.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: November 24, 2009
    Assignee: Stryker Corporation
    Inventors: Brent S. Lalomia, Stephen J. Reasoner, Stephen P. Isham, Chamara Gamhewage, Mark A. Wasserman, Glen D. Rocque, Troy E. Durnell, Grant T. Westphal, Brian MacLachlan
  • Publication number: 20080015490
    Abstract: A tube set for use with a surgical pump and tool system to supply irrigation fluid to the system is provided. The tube set includes a cassette for insertion into the surgical pump to engage a peristaltic pump of the system that is concealed within the surgical pump. The cassette includes a front, first and second spaced apart opposed sides that extend from the front, and a rear opposite the front that extends between the sides. The cassette includes a locking finger having a retention feature for engaging a retention feature integral with the surgical pump. The locking finger is movably attached to the first side to move towards the second side so that, when the locking finger is so moved, the locking finger retention feature disengages from the surgical pump retention feature.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 17, 2008
    Applicant: STRYKER CORPORATION
    Inventors: David Hershberger, Chamara Gamhewage
  • Publication number: 20070135779
    Abstract: A waste collection and disposal system for use in health care facilities is provided. The system includes a mobile waste collection unit for moving between use areas in the health care facility to collect waste material generated during medical procedures including body fluids, body tissues, saline, etc. The waste collection unit includes stacked upper and lower waste containers for receiving the waste material. During use, the upper waste container can be emptied into the lower waste container for temporary storage. In addition, different vacuum levels can be provided in the waste containers during complex procedures. Once a user desires to empty the waste collection unit, the waste collection unit is wheeled to a docking station. At the docking station, the waste material is off-loaded to a waste drain and the waste collection unit is cleaned and rinsed for further use.
    Type: Application
    Filed: December 13, 2006
    Publication date: June 14, 2007
    Applicant: STRYKER CORPORATION
    Inventors: Brent Lalomia, Stephen Reasoner, Stephen Isham, Chamara Gamhewage, Mark Wasserman, Glen Rocque, Sean Murray, Troy Durnell, Grant Westphal, Joseph Hepp, Brian MacLachlan, Brandon Scanlon
  • Publication number: 20070016185
    Abstract: An electrosurgical system preferably used for denervation procedures of nerve tissue has a control unit and a pluggable electrode assembly. The electrode assembly has a preferably disposable cannula and a preservable supply electrode assembly. The cannula has a tubular body that projects axially from a preferably pointed distal end for piercing tissue to a proximal end engaged to a first coupling assembly of the cannula. The body carries a first contact exposed directly to the nerve tissue and connected electrically to a terminal of the first coupling assembly. The supply electrode assembly has a second coupling assembly and a supply electrode that projects axially and removably into a through-bore of the body when the tool is in an operating state. The second coupling assembly carries a terminal that abuts the first coupling assembly when the coupling assemblies are mated.
    Type: Application
    Filed: May 1, 2006
    Publication date: January 18, 2007
    Inventors: Philip Tullis, Chamara Gamhewage, Douglas Staunton, Eland Cramlet, Nicole Fickes, Andy Staats