Patents by Inventor Eric Karl Litscher
Eric Karl Litscher 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: 11903602Abstract: A uterine fibroid tissue removal device includes an inner tube disposed within an outer tube and configured to be translated and rotated relative to the outer tube, and a separately formed unitary distal tip member attached to a distal end of the inner tube, such that the distal tip member translates and rotates relative to the outer tube along with the inner tube, wherein a distal facing open cutting end of the distal tip member in fluid communication with an axial lumen of the distal tip member translates across a tissue resection window in a sidewall of the outer tube so as to sever tissue extending therethrough, the distal tip member axial lumen being in fluid communication with an axial lumen of the inner tube, wherein an outer diameter of the distal tip member is greater than an outer diameter of the inner tube.Type: GrantFiled: June 25, 2021Date of Patent: February 20, 2024Assignee: Hologic, Inc.Inventors: Roy Hewitt Sullivan, Albert Chun-Chi Chin, Eric Karl Litscher, William Lucas Churchill, Ronald David Adams, William Harwick Gruber, David Jacobs
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Patent number: 11801090Abstract: A medical device may include an expandable energy delivery array reciprocally movable between a first configuration and a second configuration. The expandable energy delivery array may include a first assembly having a first proximal end piece, a first distal end piece, and one or more first energy transfer elements extending between the first proximal and first distal end pieces, and a second assembly having a second proximal end piece, a second distal end piece, and one or more second energy transfer elements extending between the second proximal and second distal end pieces. The second proximal end piece may be proximal to the first proximal end piece and the second distal end piece may be distal to the first distal end piece.Type: GrantFiled: October 10, 2019Date of Patent: October 31, 2023Assignee: Boston Scientific Scimed, Inc.Inventors: Eric Karl Litscher, Joseph A. Levendusky, Man Minh Nguyen, Paul Mannion, TJ Byrne
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Publication number: 20220047291Abstract: A uterine fibroid tissue removal device includes an inner tube disposed within an outer tube and configured to be translated and rotated relative to the outer tube, and a separately formed unitary distal tip member attached to a distal end of the inner tube, such that the distal tip member translates and rotates relative to the outer tube along with the inner tube, wherein a distal facing open cutting end of the distal tip member in fluid communication with an axial lumen of the distal tip member translates across a tissue resection window in a sidewall of the outer tube so as to sever tissue extending therethrough, the distal tip member axial lumen being in fluid communication with an axial lumen of the inner tube, wherein an outer diameter of the distal tip member is greater than an outer diameter of the inner tube.Type: ApplicationFiled: June 25, 2021Publication date: February 17, 2022Applicant: HOLOGIC, INC.Inventors: Roy Hewitt Sullivan, Albert Chun-Chi Chin, Eric Karl Litscher, William Lucas Churchill, Ronald David Adams, William Harwick Gruber, David Jacobs
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Patent number: 11045217Abstract: A uterine fibroid tissue removal device includes an inner tube disposed within an outer tube and configured to be translated and rotated relative to the outer tube, and a separately formed unitary distal tip member attached to a distal end of the inner tube, such that the distal tip member translates and rotates relative to the outer tube along with the inner tube, wherein a distal facing open cutting end of the distal tip member in fluid communication with an axial lumen of the distal tip member translates across a tissue resection window in a sidewall of the outer tube so as to sever tissue extending therethrough, the distal tip member axial lumen being in fluid communication with an axial lumen of the inner tube, wherein an outer diameter of the distal tip member is greater than an outer diameter of the inner tube.Type: GrantFiled: November 14, 2018Date of Patent: June 29, 2021Assignee: Hologic, Inc.Inventors: Roy Hewitt Sullivan, Albert Chun-Chi Chin, Eric Karl Litscher, William Lucas Churchill, Ronald David Adams, William Harwick Gruber, David Jacobs
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Publication number: 20200054391Abstract: A medical device may include an expandable energy delivery array reciprocally movable between a first configuration and a second configuration. The expandable energy delivery array may include a first assembly having a first proximal end piece, a first distal end piece, and one or more first energy transfer elements extending between the first proximal and first distal end pieces, and a second assembly having a second proximal end piece, a second distal end piece, and one or more second energy transfer elements extending between the second proximal and second distal end pieces. The second proximal end piece may be proximal to the first proximal end piece and the second distal end piece may be distal to the first distal end piece.Type: ApplicationFiled: October 10, 2019Publication date: February 20, 2020Applicant: Boston Scientific Scirned, Inc.Inventors: Eric Karl LITSCHER, Joseph A. LEVENDUSKY, Man Minh NGUYEN, Paul MANNION, TJ BYRNE
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Patent number: 10478247Abstract: A medical device may include an expandable energy delivery array reciprocally movable between a first configuration and a second configuration. The expandable energy delivery array may include a first assembly having a first proximal end piece, a first distal end piece, and one or more first energy transfer elements extending between the first proximal and first distal end pieces, and a second assembly having a second proximal end piece, a second distal end piece, and one or more second energy transfer elements extending between the second proximal and second distal end pieces. The second proximal end piece may be proximal to the first proximal end piece and the second distal end piece may be distal to the first distal end piece.Type: GrantFiled: August 7, 2014Date of Patent: November 19, 2019Assignee: Boston Scientific Scimed, Inc.Inventors: Eric Karl Litscher, Joseph A. Levendusky, Man Minh Nguyen, Paul Mannion, T J Byrne
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Publication number: 20190183528Abstract: A uterine fibroid tissue removal device includes an inner tube disposed within an outer tube and configured to be translated and rotated relative to the outer tube, and a separately formed unitary distal tip member attached to a distal end of the inner tube, such that the distal tip member translates and rotates relative to the outer tube along with the inner tube, wherein a distal facing open cutting end of the distal tip member in fluid communication with an axial lumen of the distal tip member translates across a tissue resection window in a sidewall of the outer tube so as to sever tissue extending therethrough, the distal tip member axial lumen being in fluid communication with an axial lumen of the inner tube, wherein an outer diameter of the distal tip member is greater than an outer diameter of the inner tube.Type: ApplicationFiled: November 14, 2018Publication date: June 20, 2019Applicant: HOLOGIC, INC.Inventors: Roy Hewitt Sullivan, Albert Chun-Chi Chin, Eric Karl Litscher, William Lucas Churchill, Ronald David Adams, William Harwick Gruber, David Jacobs
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Patent number: 10130389Abstract: A uterine fibroid tissue removal device includes an inner tube disposed within an outer tube and configured to be translated and rotated relative to the outer tube, and a separately formed unitary distal tip member attached to a distal end of the inner tube, such that the distal tip member translates and rotates relative to the outer tube along with the inner tube, wherein a distal facing open cutting end of the distal tip member in fluid communication with an axial lumen of the distal tip member translates across a tissue resection window in a sidewall of the outer tube so as to sever tissue extending therethrough, the distal tip member axial lumen being in fluid communication with an axial lumen of the inner tube, wherein an outer diameter of the distal tip member is greater than an outer diameter of the inner tube.Type: GrantFiled: November 30, 2016Date of Patent: November 20, 2018Assignee: HOLOGIC, INC.Inventors: Roy Hewitt Sullivan, Albert Chun-Chi Chin, Eric Karl Litscher, William Lucas Churchill, Ronald David Adams, William Harwick Gruber, David Jacobs
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Patent number: 9814618Abstract: A medical device is disclosed. The medical device may include an elongate member having a lumen extending at least partially between a proximal end and a distal end of the elongate member. The medical device may also include a plurality of legs coupled to a distal portion of the elongate member, and a distal end piece connected to each of the plurality of legs and located distally to the distal end of the elongate member. The medical device may also include an actuating member coupled to the distal end piece and extending between the plurality of legs and through the lumen. The reciprocal movement of the actuating member may be configured to reversibly move the plurality of legs from a first position to a second position. The medical device may also include a stopping member coupled to the actuating member and configured to limit a movement of the actuating member.Type: GrantFiled: June 4, 2014Date of Patent: November 14, 2017Assignee: Boston Scientific Scimed, Inc.Inventors: Man Minh Nguyen, Eric Karl Litscher
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Publication number: 20170079684Abstract: A uterine fibroid tissue removal device includes an inner tube disposed within an outer tube and configured to be translated and rotated relative to the outer tube, and a separately formed unitary distal tip member attached to a distal end of the inner tube, such that the distal tip member translates and rotates relative to the outer tube along with the inner tube, wherein a distal facing open cutting end of the distal tip member in fluid communication with an axial lumen of the distal tip member translates across a tissue resection window in a sidewall of the outer tube so as to sever tissue extending therethrough, the distal tip member axial lumen being in fluid communication with an axial lumen of the inner tube, wherein an outer diameter of the distal tip member is greater than an outer diameter of the inner tube.Type: ApplicationFiled: November 30, 2016Publication date: March 23, 2017Applicant: Hologic, Inc.Inventors: Roy Hewitt Sullivan, Albert Chun-Chi Chin, Eric Karl Litscher, William Lucas Churchill, Ronald David Adams, William Harwick Gruber, David Jacobs
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Patent number: 9539019Abstract: A uterine fibroid tissue removal device includes an inner tube disposed within an outer tube and configured to be translated and rotated relative to the outer tube, and a separately formed unitary distal tip member attached to a distal end of the inner tube, such that the distal tip member translates and rotates relative to the outer tube along with the inner tube, wherein a distal facing open cutting end of the distal tip member in fluid communication with an axial lumen of the distal tip member translates across a tissue resection window in a sidewall of the outer tube so as to sever tissue extending therethrough, the distal tip member axial lumen being in fluid communication with an axial lumen of the inner tube, wherein an outer diameter of the distal tip member is greater than an outer diameter of the inner tube.Type: GrantFiled: December 29, 2015Date of Patent: January 10, 2017Assignee: Hologic, Inc.Inventors: Roy Hewitt Sullivan, Albert Chun-Chi Chin, Eric Karl Litscher, William Lucas Churchill, Ronald David Adams, William Harwick Gruber, David Jacobs
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Patent number: 9339288Abstract: A uterine fibroid tissue removal device includes an inner tube disposed within an outer tube and configured to be translated and rotated relative to the outer tube, and a unitary distal tip member attached to a distal end of the inner tube such that the distal tip member translates and rotates relative to the outer tube along with the inner tube, wherein a distal facing open cutting end of the distal tip member in fluid communication with an axial lumen of the distal tip member translates across a tissue resection window in a sidewall of the outer tube so as to sever tissue extending therethrough, the distal tip member axial lumen being in fluid communication with an axial lumen of the inner tube, wherein the axial lumen of the distal tip member is smaller in cross-sectional area than the axial lumen of the inner tube, and wherein the distal tip member has a length greater than a length of the resection window.Type: GrantFiled: April 7, 2015Date of Patent: May 17, 2016Assignee: HOLOGIC, INC.Inventors: Roy Hewitt Sullivan, Albert Chun-Chi Chin, Eric Karl Litscher, William Lucas Churchill, Ronald David Adams, William Harwick Gruber, David Jacobs
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Publication number: 20160106454Abstract: A uterine fibroid tissue removal device includes an inner tube disposed within an outer tube and configured to be translated and rotated relative to the outer tube, and a separately formed unitary distal tip member attached to a distal end of the inner tube, such that the distal tip member translates and rotates relative to the outer tube along with the inner tube, wherein a distal facing open cutting end of the distal tip member in fluid communication with an axial lumen of the distal tip member translates across a tissue resection window in a sidewall of the outer tube so as to sever tissue extending therethrough, the distal tip member axial lumen being in fluid communication with an axial lumen of the inner tube, wherein an outer diameter of the distal tip member is greater than an outer diameter of the inner tube.Type: ApplicationFiled: December 29, 2015Publication date: April 21, 2016Inventors: Roy Hewitt Sullivan, Albert Chun-Chi Chin, Eric Karl Litscher, William Lucas Churchill, Ronald David Adams, William Harwick Gruber, David Jacobs
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Patent number: 9095366Abstract: Disclosed is a tubular cutting element for axial reciprocal movement within an outer tubular sleeve. The cutting element has an elongate tubular body, having a proximal end, a distal end and a cutting tip. The tubular body is formed in a drawing operation and the cutting tip is formed in a milling operation. The tubular body may have a Rockwell C hardness of no more than about 40, and the cutting tip may have a Rockwell C hardness of at least about 50.Type: GrantFiled: April 29, 2009Date of Patent: August 4, 2015Assignee: HOLOGIC, INC.Inventors: Roy Hewitt Sullivan, Albert Chun-Chi Chin, Eric Karl Litscher, William Lucas Churchill, Ronald David Adams, William Harwick Gruber, David Jacobs
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Publication number: 20150209080Abstract: A uterine fibroid tissue removal device includes an inner tube disposed within an outer tube and configured to be translated and rotated relative to the outer tube, and a unitary distal tip member attached to a distal end of the inner tube such that the distal tip member translates and rotates relative to the outer tube along with the inner tube, wherein a distal facing open cutting end of the distal tip member in fluid communication with an axial lumen of the distal tip member translates across a tissue resection window in a sidewall of the outer tube so as to sever tissue extending therethrough, the distal tip member axial lumen being in fluid communication with an axial lumen of the inner tube, wherein the axial lumen of the distal tip member is smaller in cross-sectional area than the axial lumen of the inner tube, and wherein the distal tip member has a length greater than a length of the resection window.Type: ApplicationFiled: April 7, 2015Publication date: July 30, 2015Inventors: Roy Hewitt Sullivan, Albert Chun-Chi Chin, Eric Karl Litscher, William Lucas Churchill, Ronald David Adams, William Harwick Gruber, David Jacobs
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Patent number: 9072431Abstract: A surgical access device can comprise a working channel providing a first lumen having an axial opening for insertion of a surgical instrument having an outflow channel, the first lumen having a fluid inlet for allowing fluid flow through the working channel and into the body, wherein fluid flows out of the body through the outflow channel of the surgical instrument; and a optical channel providing a second lumen for a visualization element and a light source, wherein the working channel comprises a larger cross-sectional area than the cross-sectional area of the optical channel. The surgical access device can further comprise a seal apparatus coupled to the working channel and configured to receive the surgical instrument, the seal apparatus comprising a first seal portion and a second seal portion, the first seal portion configured to close the fluid path into the seal apparatus, and the second seal portion configured to form a seal with the surgical instrument.Type: GrantFiled: July 8, 2011Date of Patent: July 7, 2015Assignee: HOLOGIC, INC.Inventors: Ronald David Adams, Eric Karl Litscher
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Publication number: 20150045788Abstract: A medical device may include an expandable energy delivery array reciprocally movable between a first configuration and a second configuration. The expandable energy delivery array may include a first assembly having a first proximal end piece, a first distal end piece, and one or more first energy transfer elements extending between the first proximal and first distal end pieces, and a second assembly having a second proximal end piece, a second distal end piece, and one or more second energy transfer elements extending between the second proximal and second distal end pieces. The second proximal end piece may be proximal to the first proximal end piece and the second distal end piece may be distal to the first distal end piece.Type: ApplicationFiled: August 7, 2014Publication date: February 12, 2015Inventors: Eric Karl LITSCHER, Joseph A. LEVENDUSKY, Man Minh NGUYEN, Paul MANNION, TJ BYRNE
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Patent number: 8951274Abstract: Disclosed are methods and devices for removing tissue from a site in a hollow organ, where the device has a low crossing profile and is capable of removing tissue at a high rate of speed. The device includes an elongate outer tube with a side opening and an inner tube moveably coaxially positioned within the outer tube. Tissue drawn into the side opening can be severed by moving the inner tube across the opening. Tissue may be removed through the device at a rate of at least about 1.4 cc per minute, through a lumen having a cross-sectional area of no greater than about 12.02 mm. Cutting may be accomplished by rotating the inner tube at a speed of at least about 4000 rpm, and axially reciprocating the inner tube at a rate of at least about 1.5 cycles per second. The window may have a rho value of no more than about 1, and the outside diameter of the device may be no more than about 3 mm.Type: GrantFiled: April 29, 2009Date of Patent: February 10, 2015Assignee: Hologic, Inc.Inventors: Ronald David Adams, Albert Chun-Chi Chin, Roy Hewitt Sullivan, Eric Karl Litscher, William Lucas Churchill, William Harwick Gruber
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Publication number: 20140364926Abstract: A medical device is disclosed. The medical device may include an elongate member having a lumen extending at least partially between a proximal end and a distal end of the elongate member. The medical device may also include a plurality of legs coupled to a distal portion of the elongate member, and a distal end piece connected to each of the plurality of legs and located distally to the distal end of the elongate member. The medical device may also include an actuating member coupled to the distal end piece and extending between the plurality of legs and through the lumen. The reciprocal movement of the actuating member may be configured to reversibly move the plurality of legs from a first position to a second position. The medical device may also include a stopping member coupled to the actuating member and configured to limit a movement of the actuating member.Type: ApplicationFiled: June 4, 2014Publication date: December 11, 2014Applicant: Boston Scientific Scimed, Inc.Inventors: Man Minh NGUYEN, Eric Karl LITSCHER
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Patent number: 8574253Abstract: A method and device for tissue removal. The device may be used to remove uterine fibroids and other abnormal gynecological tissue. According to one embodiment, the device includes a housing, an outer tube, and an inner tube. The outer tube is fixed to the housing and includes a side window proximate to its distal end. The side window may have sloped proximal and distal ends. The inner tube has a distal end positioned within the outer tube, the distal end being adapted to rotate and, at the same time, to move back and forth past the side window, with the rotational and translational movement of the inner tube being independently controllable. The distal end of the inner tube may have an external bevel. Suction is applied to the proximal end of the inner tube to draw tissue into the side window and to remove resected tissue through the inner tube.Type: GrantFiled: April 4, 2008Date of Patent: November 5, 2013Assignee: Hologic, Inc.Inventors: William Harwick Gruber, Ronald David Adams, Albert Chun-Chi Chin, Eric Karl Litscher, Roy Hewitt Sullivan, Paul DiCesare, Jeffrey Radziunas, Daniel Vigliotti, Bryan Dale Knodel, Chris Scott Daniels, Kevin J. Vititoe, Michael Anthony Lorenz, Paul P. Kolada, Ryan Scott Crisp, Chris William Cicenas, Ludwin M. Mora, Brent Lee Burchfield