Patents by Inventor Amitabha Mitra

Amitabha Mitra 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: 7951124
    Abstract: A wound contact device comprising a permeable material and a wound contact layer having voids extending through the contact layer to a depth in the permeable material. The wound contact layer can comprise a thin sheet or film forming a generally flat and smooth wound contact surface having essentially no discontinuities or gaps. The wound contact layer can comprise a thin sheet of highly calendered fabric forming a wound contact surface having a mean surface roughness in the range of about 0 microns to about 200 microns. In progressive wound healing, an embodiment of the wound contact device having the fabric contact surface is used in earlier healing stages and an embodiment of the wound contact device with film contact surface is used in later healing stages. The wound contact device is particularly useful in wound dressings for use in suction-assisted wound therapy.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: May 31, 2011
    Assignee: Boehringer Technologies, LP
    Inventors: John R. Boehringer, John Karpowicz, Amitabha Mitra, Christopher L. Radl
  • Patent number: 7887564
    Abstract: A method for treating a wound with sutures is disclosed. One method includes placing the body and shaft of the device within a cavity of the wound; attaching a first end of at least one suture to a first side of the wound; passing a second end of the at least one suture through the body and coupling it to the shaft; attaching a second end of the at least one suture to the second side of the wound; and rotating the shaft with respect to the body to pull the first side of the wound and the second side of the wound toward one another.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: February 15, 2011
    Assignee: Boehringer Technologies, L.P.
    Inventors: John R. Boehringer, John Karpowicz, Christopher L. Radl, Jacob L. Timm, Amitabha Mitra
  • Patent number: 7884258
    Abstract: A therapeutic device for promoting the healing of a wound in a mammal is disclosed. An exemplary device comprises a permeable structure having a plurality of depressions formed in a surface thereof. In use, the surface having the depressions is disposed adjacent a surface of the wound. A method of treating a wound comprises the steps of providing a permeable structure comprising a plurality of randomly disposed fibers and having i) a plurality of wound surface contact elements disposed between end portions of the structure, and ii) a plurality of voids defined by the contact elements; and applying the permeable structure to at least one surface of the wound.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: February 8, 2011
    Assignee: Boehringer Technologies, L.P.
    Inventors: John R. Boehringer, John Karpowicz, Amitabha Mitra, Christopher L. Radl
  • Publication number: 20100318046
    Abstract: A wound packing for use with suction is provided. The wound packing comprises a plurality of nonabsorbent synthetic polymeric fibers coupled together to form a nonabsorbent material suitable for placement in the wound of a mammal. A method for treating the wound in a mammal using the disclosed wound packing is also provided.
    Type: Application
    Filed: June 28, 2010
    Publication date: December 16, 2010
    Applicant: BOEHRINGER TECHNOLOGIES, L.P.
    Inventors: John R. Boehringer, John Karpowicz, Amitabha Mitra, Christopher L. Radl
  • Patent number: 7754937
    Abstract: A wound packing for use with suction is provided. The wound packing comprises a plurality of nonabsorbent synthetic polymeric fibers coupled together to form a nonabsorbent material suitable for placement in the wound of a mammal. A method for treating the wound in a mammal using the disclosed wound packing is also provided.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: July 13, 2010
    Assignee: Boehringer Technologies, L.P.
    Inventors: John R. Boehringer, John Karpowicz, Amitabha Mitra, Christopher L. Radl
  • Publication number: 20090287129
    Abstract: A therapeutic device for promoting the healing of a wound in a mammal is disclosed. An exemplary device comprises a permeable structure having a plurality of depressions formed in a surface thereof. In use, the surface having the depressions is disposed adjacent a surface of the wound. A method of treating a wound comprises the steps of providing a permeable structure comprising a plurality of randomly disposed fibers and having i) a plurality of wound surface contact elements disposed between end portions of the structure, and ii) a plurality of voids defined by the contact elements; and applying the permeable structure to at least one surface of the wound.
    Type: Application
    Filed: May 20, 2009
    Publication date: November 19, 2009
    Applicant: BOEHRINGER TECHNOLOGIES, L.P.
    Inventors: John R. Boehringer, John Karpowicz, Amitabha Mitra, Christopher L. Radl
  • Publication number: 20090088708
    Abstract: A method for treating a wound with sutures is disclosed. One method includes placing the body and shaft of the device within a cavity of the wound; attaching a first end of at least one suture to a first side of the wound; passing a second end of the at least one suture through the body and coupling it to the shaft; attaching a second end of the at least one suture to the second side of the wound; and rotating the shaft with respect to the body to pull the first side of the wound and the second side of the wound toward one another.
    Type: Application
    Filed: December 3, 2008
    Publication date: April 2, 2009
    Applicant: Boehringer Closure Properties, L.P.
    Inventors: John R. Boehringer, John Karpowicz, Christpoher L. Radl, Jacob L. Timm, Amitabha Mitra
  • Publication number: 20080177253
    Abstract: A wound contact device comprising a permeable material and a wound contact layer having voids extending through the contact layer to a depth in the permeable material. The wound contact layer can comprise a thin sheet or film forming a generally flat and smooth wound contact surface having essentially no discontinuities or gaps. The wound contact layer can comprise a thin sheet of highly calendered fabric forming a wound contact surface having a mean surface roughness in the range of about 0 microns to about 200 microns. In progressive wound healing, an embodiment of the wound contact device having the fabric contact surface is used in earlier healing stages and an embodiment of the wound contact device with film contact surface is used in later healing stages. The wound contact device is particularly useful in wound dressings for use in suction-assisted wound therapy.
    Type: Application
    Filed: July 6, 2007
    Publication date: July 24, 2008
    Applicant: Boehringer Laboratories Inc.
    Inventors: John R. Boehringer, John Karpowicz, Amitabha Mitra, Christopher L. Radl
  • Publication number: 20060293691
    Abstract: Disclosed are apparatus and methods for performing cerclage. In some aspects of the present invention, the apparatus is designed to both compress a fracture and aid the operator in applying cerclage thereto. Cerclage is facilitated by providing a passageway internal to the apparatus that encircles the fracture during compression of the fracture with the apparatus. The internal passageway allows a cerclage material to be threaded therethrough without disruption or damage to surrounding tissue, skin, or the like. Upon removal of the apparatus, cerclage may be performed by tightening or otherwise tying off the cerclage material. In some embodiments of the present invention, the apparatus portions comprising the internal passageway are removable to allow such passageways to be discarded after each use, thereby simplifying sterilization and the like thereof. In other aspects of the present invention, interlocking components are provided to facilitate threading of the cerclage material through the apparatus.
    Type: Application
    Filed: June 5, 2006
    Publication date: December 28, 2006
    Inventors: Avir Mitra, Amitabha Mitra
  • Publication number: 20050228329
    Abstract: A therapeutic device for promoting the healing of a wound in a mammal is disclosed. An exemplary device comprises a permeable structure having a plurality of depressions formed in a surface thereof. In use, the surface having the depressions is disposed adjacent a surface of the wound. A method of treating a wound comprises the steps of providing a permeable structure comprising a plurality of randomly disposed fibers and having i) a plurality of wound surface contact elements disposed between end portions of the structure, and ii) a plurality of voids defined by the contact elements; and applying the permeable structure to at least one surface of the wound.
    Type: Application
    Filed: November 5, 2004
    Publication date: October 13, 2005
    Inventors: John Boehringer, John Karpowicz, Amitabha Mitra, Christopher Radl
  • Publication number: 20040193187
    Abstract: A device for placement in a wound and for use with sutures to repair the wound of a patient. The device comprises a body having at least one aperture extending radially through the body. A shaft is disposed within and rotatably coupled to the body, and the shaft has at least one receiver substantially in line with the aperture in the body. One method comprises the steps of placing the body and shaft of the device within a cavity of the wound; attaching a first end of at least one suture to a first side of the wound; passing a second end of the at least one suture through the body and coupling it to the shaft; attaching a second end of the at least one suture to the second side of the wound; and rotating the shaft with respect to the body to pull the first side of the wound and the second side of the wound toward one another.
    Type: Application
    Filed: January 22, 2004
    Publication date: September 30, 2004
    Inventors: John R. Boehringer, John Karpowicz, Christopher L. Radl, Jacob L. Timm, Amitabha Mitra