Patents by Inventor Hugh Charles Crenshaw
Hugh Charles Crenshaw 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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Publication number: 20230053621Abstract: A propulsor is described in which rotation of the frustum of a right circular cylinder generates thrust. Variants of this basic geometrical shape are also described that enable multiple means for propelling fluid past the propulsor.Type: ApplicationFiled: July 6, 2022Publication date: February 23, 2023Inventors: Charles Anthony Pell, Hugh Charles Crenshaw, Ryan Moody
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Patent number: 11253283Abstract: A differential dissecting instrument for differentially dissecting complex tissue is disclosed. The differential dissecting instrument comprises a handle and an elongate member having a first end and a second end, wherein the first end is connected to the handle. The differential dissecting instrument comprises a differential dissecting member configured to be rotatably attached to the second end and further comprises at least one tissue engaging surface. The differential dissecting instrument comprises a mechanism configured to mechanically rotate the differential dissecting member around an axis of rotation, thereby causing the at least one tissue engaging surface to move in at least one direction against the complex tissue. The at least one tissue engaging surface is configured to selectively engage the complex tissue such that the at least one tissue engaging surface disrupts at least one soft tissue in the complex tissue, but does not disrupt firm tissue in the complex tissue.Type: GrantFiled: December 21, 2018Date of Patent: February 22, 2022Inventors: Charles Anthony Pell, Hugh Charles Crenshaw, Ryan Moody, Eric Torr Espenhahn
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Patent number: 10639056Abstract: A differential dissecting instrument for differentially dissecting complex tissue is disclosed. The differential dissecting instrument comprises a handle and an elongate member having a first end and a second end, wherein the first end is connected to the handle. The differential dissecting instrument comprises a differential dissecting member configured to be rotatably attached to the second end and further comprises at least one tissue engaging surface. The differential dissecting instrument comprises a mechanism configured to mechanically rotate the differential dissecting member around an axis of rotation, thereby causing the at least one tissue engaging surface to move in at least one direction against the complex tissue. The at least one tissue engaging surface is configured to selectively engage the complex tissue such that the at least one tissue engaging surface disrupts at least one soft tissue in the complex tissue, but does not disrupt firm tissue in the complex tissue.Type: GrantFiled: March 13, 2017Date of Patent: May 5, 2020Assignee: Physcient, Inc.Inventors: Charles Anthony Pell, Hugh Charles Crenshaw, Ryan Moody, Eric Torr Espenhahn
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Publication number: 20200054315Abstract: Methods and devices are disclosed to reduce tissue trauma when a physician retracts a patient's tissues for surgery. A device includes a tissue engager adapted to engage a patient's tissue, a control system adapted to control the tissue engager to deform the patient's tissue, and a sensor adapted to produce a first signal based on a status of the tissue engager. The control system is operatively associated with a motive source and the sensor. The control system is configured to receive the first signal based on the status of the at least one tissue engager, and control, in light of the first signal based on the status of the at least one tissue engager, the at least one motive source in order to control the motion of the at least one tissue engager. The motion of the at least one tissue engager may be an oscillating motion.Type: ApplicationFiled: August 5, 2019Publication date: February 20, 2020Inventors: Charles Anthony Pell, Hugh Charles Crenshaw
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Patent number: 10368854Abstract: Methods and devices are disclosed to reduce tissue trauma when a physician retracts a patient's tissues for surgery. A device includes a tissue engager adapted to engage a patient's tissue, a control system adapted to control the tissue engager to deform the patient's tissue, and a sensor adapted to produce a first signal based on the deformation. The control system is further adapted to receive the first signal, perform a plurality of measurements based on the first signal over time; and compare a substantially instantaneous measurement of the first signal to a variance in the plurality of measurements over an interval of time preceding the instantaneous measurement, and detect a state of the patient's tissue based on the comparison.Type: GrantFiled: April 24, 2017Date of Patent: August 6, 2019Assignee: Physcient, Inc.Inventors: Charles Anthony Pell, Hugh Charles Crenshaw
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Publication number: 20190117252Abstract: A differential dissecting instrument for differentially dissecting complex tissue is disclosed. The differential dissecting instrument comprises a handle and an elongate member having a first end and a second end, wherein the first end is connected to the handle. The differential dissecting instrument comprises a differential dissecting member configured to be rotatably attached to the second end and further comprises at least one tissue engaging surface. The differential dissecting instrument comprises a mechanism configured to mechanically rotate the differential dissecting member around an axis of rotation, thereby causing the at least one tissue engaging surface to move in at least one direction against the complex tissue. The at least one tissue engaging surface is configured to selectively engage the complex tissue such that the at least one tissue engaging surface disrupts at least one soft tissue in the complex tissue, but does not disrupt firm tissue in the complex tissue.Type: ApplicationFiled: December 21, 2018Publication date: April 25, 2019Inventors: Charles Anthony Pell, Hugh Charles Crenshaw, Ryan Moody, Eric Torr Espenhahn
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Publication number: 20180035992Abstract: Methods and devices are disclosed to reduce tissue trauma when a physician retracts a patient's tissues for surgery. A device includes a tissue engager adapted to engage a patient's tissue, a control system adapted to control the tissue engager to deform the patient's tissue, and a sensor adapted to produce a first signal based on the deformation.Type: ApplicationFiled: April 24, 2017Publication date: February 8, 2018Applicant: Physcient, Inc.Inventors: Charles Anthony Pell, Hugh Charles Crenshaw, Eric Torr Espenhahn, Jeffrey Paul Williams
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Publication number: 20170281302Abstract: A differential dissecting instrument for differentially dissecting complex tissue is disclosed. The differential dissecting instrument comprises a handle and an elongate member having a first end and a second end, wherein the first end is connected to the handle. The differential dissecting instrument comprises a differential dissecting member configured to be rotatably attached to the second end and further comprises at least one tissue engaging surface. The differential dissecting instrument comprises a mechanism configured to mechanically rotate the differential dissecting member around an axis of rotation, thereby causing the at least one tissue engaging surface to move in at least one direction against the complex tissue. The at least one tissue engaging surface is configured to selectively engage the complex tissue such that the at least one tissue engaging surface disrupts at least one soft tissue in the complex tissue, but does not disrupt firm tissue in the complex tissue.Type: ApplicationFiled: March 13, 2017Publication date: October 5, 2017Inventors: Charles Anthony Pell, Hugh Charles Crenshaw, Ryan Moody, Eric Torr Espenhahn
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Patent number: 9592069Abstract: An instrument for differentially dissecting complex tissue is disclosed, comprising a handle, a central longitudinal axis, and an elongate member, with a differential dissecting member (DDM) configured to be rotatably attached to a distal end. The DDM comprises at least one tissue engaging surface, a first torque-point disposed to a first side of an axis of rotation, and a mechanism configured to rotate the DDM around the axis of rotation, causing the tissue engaging surface to move in at least one direction against the complex tissue. The mechanism comprises at least one force-transmitting member attached to the first torque-point member and to a motive source configured to oscillate the DDM. The tissue engaging surface is configured to selectively engage the complex tissue such that it disrupts at least one soft tissue in the complex tissue, but does not disrupt firm tissue in the complex tissue.Type: GrantFiled: October 28, 2013Date of Patent: March 14, 2017Assignee: Physcient, Inc.Inventors: Ryan Moody, Charles Anthony Pell, Eric Torr Espenhahn, Hugh Charles Crenshaw
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Patent number: 9538995Abstract: A differential dissecting instrument for differentially dissecting complex tissue is disclosed. The differential dissecting instrument comprises a handle and an elongate member having a first end and a second end, wherein the first end is connected to the handle. The differential dissecting instrument comprises a differential dissecting member configured to be rotatably attached to the second end and further comprises at least one tissue engaging surface. The differential dissecting instrument comprises a mechanism configured to mechanically rotate the differential dissecting member around an axis of rotation, thereby causing the at least one tissue engaging surface to move in at least one direction against the complex tissue. The at least one tissue engaging surface is configured to selectively engage the complex tissue such that the at least one tissue engaging surface disrupts at least one soft tissue in the complex tissue, but does not disrupt firm tissue in the complex tissue.Type: GrantFiled: April 29, 2013Date of Patent: January 10, 2017Assignee: PHYSCIENT, INC.Inventors: Hugh Charles Crenshaw, Charles Anthony Pell, Eric Torr Espenhahn, Ryan Moody
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Patent number: 9402610Abstract: Methods and devices are disclosed to reduce tissue trauma when a surgeon performs surgery by thoracoscopy. Methods and devices are disclosed for protecting tissues adjacent to an intercostal incision from trauma caused by impingement of instruments into an intercostal incision. In one part, these methods and devices include devices that have controls that stick up out of the incision, permitting adjustment by the surgeon. In another part, methods and devices are disclosed for smaller devices that reside entirely under this skin and require no adjustment by the surgeon.Type: GrantFiled: September 10, 2012Date of Patent: August 2, 2016Assignee: PHYSCIENT, INC.Inventors: Charles Anthony Pell, Hugh Charles Crenshaw, Eric Torr Espenhahn
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Publication number: 20150351734Abstract: Methods and devices are disclosed to reduce tissue trauma when a physician retracts a patient's tissues for surgery. In one part, methods and devices are disclosed for controlling retraction force and pace. In another part, methods and devices are disclosed for oscillating force when opening. In another part, methods and devices are disclosed for detecting trauma during retraction. In another part, methods and devices are disclosed for balancing forces on multiple retraction elements. In another part, methods and devices are disclosed for reducing forces in multiple dimensions. In another part, methods and devices are disclosed for engaging ribs. In another part, methods and devices are disclosed to compensate for deformation of a retractor under load. In another part, methods and devices are disclosed that combine these methods and devices. In another part, methods and devices are disclosed for controlling pressure inside inflatable devices used for deforming biological tissues.Type: ApplicationFiled: June 9, 2015Publication date: December 10, 2015Inventors: Hugh Charles Crenshaw, Charles Anthony Pell, Jeffrey P. Williams
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Patent number: 9049989Abstract: Methods and devices are disclosed to reduce tissue trauma when a physician retracts a patient's tissues for surgery. In one part, methods and devices are disclosed for controlling retraction force and pace. In another part, methods and devices are disclosed for oscillating force when opening. In another part, methods and devices are disclosed for detecting trauma during retraction. In another part, methods and devices are disclosed for balancing forces on multiple retraction elements. In another part, methods and devices are disclosed for reducing forces in multiple dimensions. In another part, methods and devices are disclosed for engaging ribs. In another part, methods and devices are disclosed to compensate for deformation of a retractor under load. In another part, methods and devices are disclosed that combine these methods and devices. In another part, methods and devices are disclosed for controlling pressure inside inflatable devices used for deforming biological tissues.Type: GrantFiled: May 19, 2011Date of Patent: June 9, 2015Assignee: PHYSCIENT, INC.Inventors: Hugh Charles Crenshaw, Charles Anthony Pell
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Publication number: 20150141906Abstract: Methods and devices are disclosed to reduce the tissue trauma that occurs when a physician retracts or otherwise deforms a patient's tissues for surgery or other medical procedures. In one part, methods and devices are disclosed for cooling the tissue around the incision. In another part, methods and devices are disclosed that elute drugs into the tissues of the tissue margin. In another part, methods and devices are disclosed to engage tissues during retraction to cushion, to sense tissue state, and to modulate tissue state.Type: ApplicationFiled: December 19, 2014Publication date: May 21, 2015Inventors: Charles Anthony Pell, Hugh Charles Crenshaw
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Patent number: 8915845Abstract: Methods and devices are disclosed to reduce the tissue trauma that occurs when a physician retracts or otherwise deforms a patient's tissues for surgery or other medical procedures. In one part, methods and devices are disclosed for cooling the tissue around the incision. In another part, methods and devices are disclosed that elute drugs into the tissues of the tissue margin. In another part, methods and devices are disclosed to engage tissues during retraction to cushion, to sense tissue state, and to modulate tissue state.Type: GrantFiled: May 14, 2009Date of Patent: December 23, 2014Assignee: Physcient, Inc.Inventors: Charles Anthony Pell, Hugh Charles Crenshaw
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Publication number: 20140364890Abstract: Embodiments disclosed include methods and devices for blunt dissection, which differentially disrupt a patient's soft tissues while not disrupting that patient's firm tissues. In one embodiment, a differential dissecting instrument for differentially dissecting complex tissue disclosed. The differential dissecting instrument comprises a handle, a central longitudinal axis, and an elongate member having a proximal end and a distal end.Type: ApplicationFiled: October 28, 2013Publication date: December 11, 2014Applicant: Physcient, Inc.Inventors: Ryan Moody, Charles Anthony Pell, Eric Torr Espenhahn, Hugh Charles Crenshaw
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Patent number: 8845527Abstract: Methods and devices are disclosed to reduce the tissue trauma that occurs when a physician retracts or otherwise deforms a patient's tissues for surgery or other medical procedures. In one part, methods and devices are disclosed for controlling the force and pace of retraction to reduce tissue trauma. In another part, methods and devices are disclosed for applying an oscillating load when opening. In another part, pads that cool the tissue around the incision are disclosed. In another part, pads that elute drugs into the tissues of the tissue margin are disclosed. In another part, methods and devices are disclosed that self-align components of the retractor and engage hard tissues directly to avoid soft tissue damage. In another part, pads that engage tissues to cushion, to sense tissue state, and to modulate tissue state are disclosed.Type: GrantFiled: April 13, 2009Date of Patent: September 30, 2014Assignee: Physcient, Inc.Inventors: Hugh Charles Crenshaw, Charles Anthony Pell
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Publication number: 20130310869Abstract: A differential dissecting instrument for differentially dissecting complex tissue is disclosed. The differential dissecting instrument comprises a handle and an elongate member having a first end and a second end, wherein the first end is connected to the handle. The differential dissecting instrument comprises a differential dissecting member configured to be rotatably attached to the second end and further comprises at least one tissue engaging surface. The differential dissecting instrument comprises a mechanism configured to mechanically rotate the differential dissecting member around an axis of rotation, thereby causing the at least one tissue engaging surface to move in at least one direction against the complex tissue. The at least one tissue engaging surface is configured to selectively engage the complex tissue such that the at least one tissue engaging surface disrupts at least one soft tissue in the complex tissue, but does not disrupt firm tissue in the complex tissue.Type: ApplicationFiled: April 29, 2013Publication date: November 21, 2013Applicant: Physcient, Inc.Inventors: Hugh Charles Crenshaw, Charles Anthony Pell, Eric Torr Espenhahn, Ryan Moody
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Publication number: 20130237766Abstract: Methods and devices are disclosed to reduce tissue trauma when a surgeon performs surgery by thoracoscopy. Methods and devices are disclosed for protecting tissues adjacent to an intercostal incision from trauma caused by impingement of instruments into an intercostal incision. In one part, these methods and devices include devices that have controls that stick up out of the incision, permitting adjustment by the surgeon. In another part, methods and devices are disclosed for smaller devices that reside entirely under this skin and require no adjustment by the surgeon.Type: ApplicationFiled: September 10, 2012Publication date: September 12, 2013Applicant: PHYSCIENT, INC.Inventors: Charles Anthony Pell, Hugh Charles Crenshaw, Eric Torr Espenhahn
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Patent number: D782041Type: GrantFiled: July 17, 2015Date of Patent: March 21, 2017Assignee: Physcient, Inc.Inventors: Charles Anthony Pell, Hugh Charles Crenshaw, Eric Torr Espenhahn, Ryan Moody