Patents by Inventor Christopher J. Calhoun
Christopher J. Calhoun 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).
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Patent number: 8349795Abstract: Resorbable lactide polymer thin membranes are disclosed. The thin membranes are constructed of polylactide resorbable polymers, which are engineered to be absorbed into the body relatively slowly over time in order to reduce potential negative side effects. The membranes are formed to have very thin thicknesses, for example, thicknesses between about 0.010 mm and about 0.30 mm. The membranes can be extruded from polylactide polymers having a relatively high viscosity property, can be preshaped with relatively thick portions, and can be stored in sterile packages.Type: GrantFiled: July 28, 2011Date of Patent: January 8, 2013Assignee: MAST Biosurgery AGInventors: Christopher J. Calhoun, Ralph E. Holmes, Kenneth K. Kleinhenz
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Publication number: 20120027835Abstract: A prosthesis for repairing a hernia includes an adhesion-resistant biodegradable region and an opposing tissue-ingrowth biodegradable region. When the prosthesis is implanted into the patient, the adhesion-resistant biodegradable region covers a fascial defect of the hernia, and the tissue-ingrowth biodegradable region is located above the adhesion-resistant biodegradable region while being exposed substantially only to the hoses subcutaneous tissue layer. This orientation allows the tissue-ingrowth biodegradable region to become firmly incorporated with the host's body tissue. The adhesion-resistant biodegradable region faces the internal organs and decreases the incidence of adhesions and/or bowel obstruction.Type: ApplicationFiled: October 10, 2011Publication date: February 2, 2012Inventors: Kai Deusch, Christopher J. Calhoun, Kenton R. Mullins
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Publication number: 20120010726Abstract: Described are devices and methods for reinforcing a layer of living tissue, which when affixed to a tissue layer prior to surgical incision, reinforces the tissue to be incised, provides a fibro-conductive matrix to promote healing in a preferred plane, and provides for a subsequent closure and fluidic seal. A partially or entirely absorbable growth matrix is disclosed, comprising two adhesion-resistant layers enclosing a cellular conductive medium for promoting fibrosis in a preferred plane. The cellular conductive portion is partially or entirely sequestered from surrounding tissue. The device is constructed in a physiologic range of tensile strengths and elasticity suitable for closure of the pericardium, peritoneum, or other typically thin membranes enclosing organs in the body, whose function is to prevent adhesions between tissue surfaces normally in motion.Type: ApplicationFiled: June 9, 2011Publication date: January 12, 2012Inventors: Lukas BLUECHER, Michael T. Milbocker, Christopher J. Calhoun
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Publication number: 20110280917Abstract: Resorbable lactide polymer thin membranes are disclosed. The thin membranes are constructed of polylactide resorbable polymers, which are engineered to be absorbed into the body relatively slowly over time in order to reduce potential negative side effects. The membranes are formed to have very thin thicknesses, for example, thicknesses between about 0.010 mm and about 0.30 mm. The membranes can be extruded from polylactide polymers having a relatively high viscosity property, can be preshaped with relatively thick portions, and can be stored in sterile packages.Type: ApplicationFiled: July 28, 2011Publication date: November 17, 2011Inventors: Christopher J. Calhoun, Ralph E. Holmes, Kenneth K. Kleinhenz
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Publication number: 20110274739Abstract: Resorbable polymer barrier membranes and methods of their applications are disclosed. In a broad embodiment, methods of governing tissue growth, or preventing tissue growth into a certain spatial area, includes the step of forming a spatial barrier with the present resorbable barrier membrane. The barrier membrane separates a tissue-growth area and a non-bone-growth area, and prevents tissue from growing into the non-growth area.Type: ApplicationFiled: May 10, 2010Publication date: November 10, 2011Inventors: Kai Deusch, Christopher J. Calhoun, Kenton R. Mullins
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Patent number: 8048444Abstract: An anti-adhesion membrane is placed onto an implant introduced into a surgical site of a patient to prevent post-surgical adhesions between the implant and surrounding tissue. The implant may comprise either biological material, such as a transplanted organ, or non-biological material such as a medical device. The membrane may be applied in a variety of ways. In one example, a membrane according to the present invention is shrink-wrapped around a pace-maker. In another example, a breast implant is spray-coated or dipped with the membrane material.Type: GrantFiled: January 11, 2007Date of Patent: November 1, 2011Assignee: MAST Biosurgery AGInventors: Christopher J. Calhoun, Ralph E. Holmes, G. Bryan Cornwall
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Patent number: 8012502Abstract: Resorbable lactide polymer thin membranes are disclosed. The thin membranes are constructed of polylactide resorbable polymers, which are engineered to be absorbed into the body relatively slowly over time in order to reduce potential negative side effects. The membranes are formed to have very thin thicknesses, for example, thicknesses between about 0.010 mm and about 0.300 mm. The membranes can be extruded from polylactide polymers having a relatively high viscosity property, can be preshaped with relatively thick portions, and can be stored in sterile packages.Type: GrantFiled: November 9, 2007Date of Patent: September 6, 2011Assignee: MAST Biosurgery AGInventors: Christopher J. Calhoun, Ralph E. Holmes, Kenneth K. Kleinhenz
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Patent number: 7947300Abstract: Resorbable lactide polymer thin membranes are disclosed. The thin membranes are constructed of polylactide resorbable polymers, which are engineered to be absorbed into the body relatively slowly over time in order to reduce potential negative side effects. The membranes are formed to have very thin thicknesses, for example, thicknesses between about 0.010 mm and about 0.300 mm. The membranes can be extruded from polylactide polymers having a relatively high viscosity property, can be preshaped with relatively thick portions, and can be stored in sterile packages.Type: GrantFiled: January 16, 2007Date of Patent: May 24, 2011Assignee: MAST Biosurgery AGInventors: Christopher J. Calhoun, Ralph E. Holmes, Kenneth K. Kleinhenz
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Publication number: 20100266662Abstract: Resorbable polylactide polymer healing membranes and methods of their applications are disclosed. In a broad embodiment, the invention features methods for inducing proper tissue healing after an open heart surgery. In one embodiment, the methods includes a step of forming a patch with a healing membrane over the open pericardium to induce proper tissue healing and placement in other open heart surgery procedures to facilitate re-entry by the surgeon.Type: ApplicationFiled: April 26, 2010Publication date: October 21, 2010Inventor: Christopher J. Calhoun
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Publication number: 20100266663Abstract: A prosthesis for repairing a hernia includes an adhesion-resistant biodegradable region and an opposing tissue-ingrowth biodegradable region. When the prosthesis is implanted into the patient, the adhesion-resistant biodegradable region covers a fascial defect of the hernia, and the tissue-ingrowth biodegradable region is located above the adhesion-resistant biodegradable region while being exposed substantially only to the host's subcutaneous tissue layer. This orientation allows the tissue-ingrowth biodegradable region to become firmly incorporated with the host's body tissue. The adhesion-resistant biodegradable region faces the internal organs and decreases the incidence of adhesions and/or bowel obstruction.Type: ApplicationFiled: April 26, 2010Publication date: October 21, 2010Inventors: Christopher J. Calhoun, Lukas Bluecher
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Patent number: 7767222Abstract: An anti-adhesion membrane is placed onto an implant introduced into a surgical site of a patient to prevent post-surgical adhesions between the implant and surrounding tissue. The implant may comprise either biological material, whcu as a transplanted organ, or non-biological material such as a medical device. The membrane may be applied in a variety of ways. In one example, a membrane according to the present invention is shrink-wrapped around a pace-maker. In another example, a breast implant is spray-coated or dipped with the membrane material.Type: GrantFiled: July 31, 2003Date of Patent: August 3, 2010Assignee: MAST Biosurgery AGInventors: Christopher J. Calhoun, Ralph E. Holmes, G. Bryan Cornwall
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Patent number: 7744915Abstract: An anti-adhesion membrane is placed onto an implant introduced into a surgical site of a patient to prevent post-surgical adhesions between the implant and surrounding tissue. The implant may comprise either biological material, such as a transplanted organ, or non-biological material such as a medical device. The membrane may be applied in a variety of ways. In one example, a membrane according to the present invention is shrink-wrapped around a pace-maker. In another example, a breast implant is spray-coated or dipped with the membrane material.Type: GrantFiled: January 12, 2007Date of Patent: June 29, 2010Assignee: MAST Biosurgery AGInventors: Christopher J. Calhoun, Ralph E. Holmes, G. Bryan Cornwall
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Patent number: 7704520Abstract: Resorbable polylactide polymer healing membranes and methods of their applications are disclosed. In a broad embodiment, the invention features methods for inducing proper tissue healing after an open heart surgery. In one embodiment, the methods includes a step of forming a patch with a healing membrane over the open pericardium to induce proper tissue healing and placement in other open heart surgery procedures to facilitate re-entry by the surgeon.Type: GrantFiled: September 10, 2003Date of Patent: April 27, 2010Assignee: MAST Biosurgery AGInventor: Christopher J. Calhoun
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Publication number: 20090288753Abstract: An anti-adhesion membrane is placed onto an implant introduced into a surgical site of a patient to prevent post-surgical adhesions between the implant and surrounding tissue. The implant may comprise either biological material, such as a transplanted organ, or non-biological material such as a medical device. The membrane may be applied in a variety of ways. In one example, a membrane according to the present invention is shrink-wrapped around a pace-maker. In another example, a breast implant is spray-coated or dipped with the membrane material.Type: ApplicationFiled: July 29, 2009Publication date: November 26, 2009Inventors: Christopher J. Calhoun, Ralph E. Homes, G. Bryan Comwall
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Patent number: 7592017Abstract: Resorbable lactide polymer thin membranes are disclosed. The thin membranes are constructed of polylactide resorbable polymers, which are engineered to be absorbed into the body relatively slowly over time in order to reduce potential negative side effects. The membranes are formed to have very thin thicknesses, for example, thicknesses between about 0.010 mm and about 0.300 mm. The membranes can be extruded from polylactide polymers having a relatively high viscosity property, can be preshaped with relatively thick portions, and can be stored in sterile packages.Type: GrantFiled: July 31, 2003Date of Patent: September 22, 2009Assignee: MAST Biosurgery AGInventors: Christopher J. Calhoun, Ralph E. Holmes, Kenneth K. Kleinhenz
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Patent number: 7537782Abstract: Resorbable polymer barrier membranes and methods of their applications are disclosed. In a broad embodiment, methods of governing bone growth, or preventing bone growth into a certain spatial area, includes the step of forming a spatial barrier with the present resorbable barrier membrane. The barrier membrane separates a bone-growth area and a non-bone-growth area, and prevents bone from growing into the non-growth area.Type: GrantFiled: February 27, 2003Date of Patent: May 26, 2009Assignee: Kensey Nash CorporationInventors: Christopher J. Calhoun, G. Bryan Cornwall
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Publication number: 20080119878Abstract: A prosthesis for repairing a hernia includes an adhesion-resistant biodegradable region and an opposing tissue-ingrowth biodegradable region. When the prosthesis is implanted into the patient, the adhesion-resistant biodegradable region covers a fascial defect of the hernia, and the tissue-ingrowth biodegradable region is located above the adhesion-resistant biodegradable region while being exposed substantially only to the host's subcutaneous tissue layer. This orientation allows the tissue-ingrowth biodegradable region to become firmly incorporated with the host's body tissue. The adhesion-resistant biodegradable region faces the internal organs and decreases the incidence of adhesions and/or bowel obstruction.Type: ApplicationFiled: December 5, 2007Publication date: May 22, 2008Inventors: Kai Deusch, Christopher J. Calhoun, Kenton R. Mullins
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Publication number: 20080119877Abstract: A prosthesis for repairing a hernia includes an adhesion-resistant biodegradable region and an opposing tissue-ingrowth biodegradable region. When the prosthesis is implanted into the patient, the adhesion-resistant biodegradable region covers a fascial defect of the hernia, and the tissue-ingrowth biodegradable region is located above the adhesion-resistant biodegradable region while being exposed substantially only to the host's subcutaneous tissue layer. This orientation allows the tissue-ingrowth biodegradable region to become firmly incorporated with the host's body tissue. The adhesion-resistant biodegradable region faces the internal organs and decreases the incidence of adhesions and/or bowel obstruction.Type: ApplicationFiled: December 5, 2007Publication date: May 22, 2008Inventors: Kai Deusch, Christopher J. Calhoun, Kenton R. Mullins
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Patent number: 7104994Abstract: A method, apparatus and system for applying bio-resorbable membranes or plates to bone for internal fixation of bone defects is disclosed.Type: GrantFiled: October 5, 2000Date of Patent: September 12, 2006Assignee: Cytori Therapeutics, Inc.Inventors: James Peter Amis, Christopher J. Calhoun
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Publication number: 20040137033Abstract: Resorbable lactide polymer thin membranes are disclosed. The thin membranes are constructed of polylactide resorbable polymers, which are engineered to be absorbed into the body relatively slowly over time in order to reduce potential negative side effects. The membranes are formed to have very thin thicknesses, for example, thicknesses between about 0.010 mm and about 0.300 mm. The membranes can be extruded from polylactide polymers having a relatively high viscosity property, can be preshaped with relatively thick portions, and can be stored in sterile packages.Type: ApplicationFiled: July 31, 2003Publication date: July 15, 2004Inventors: Christopher J. Calhoun, Ralph E. Holmes, Kenneth K. Kleinhenz