Patents by Inventor Richard Ewers

Richard Ewers 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).

  • Publication number: 20060030755
    Abstract: A surgical access device includes a single valve that forms a seal with the body wall and provides an access channel into a body cavity. The valve has properties for creating a zero seal in the absence of an instrument as well as an instrument seal with instruments having a full range of instrument diameter. The valve can include a gel and preferably an ultragel comprised of an elastomer and an oil providing elongation greater than 1000 percent and durometer less than 5 Shore A. The single valve can be used as a hand port where the instrument comprises the arm of a surgeon, thereby providing hand access into the cavity. A method for making the surgical access device includes the combining of a gelling agent with an oil, preferably in a molding process. A method for using the device includes steps for creating an opening with the instrument.
    Type: Application
    Filed: October 5, 2005
    Publication date: February 9, 2006
    Inventors: Richard Ewers, John Brustad, Edward Pingleton, Nabil Hilal, Gary Dulak, Payam Adlparvar, Robert Bowes
  • Publication number: 20060020274
    Abstract: A manipulatable grasping needle is described herein. A piercing and grasping assembly generally comprises a needle body, which is optionally hollow, having a piercing tip and a grasping arm positioned proximally of the tip, wherein the grasping arm is adapted to project from the needle body and releasably retain a length of suture. Alternatively, opposing jaws can form a singular piercing tip when the jaws are closed. The assembly is positioned at the distal end of an elongate member which can be rigid or flexible for advancement through an endoscopic device. The elongate member can also comprise one or more articulatable sections to enable manipulation of the assembly into various shapes to facilitate suture and tissue manipulation. Moreover, either the needle body or grasping arm can define a notch for receiving suture material. A hooking member can also be provided to facilitate suture retrieval when grasping suture.
    Type: Application
    Filed: July 23, 2004
    Publication date: January 26, 2006
    Applicant: USGI Medical Inc.
    Inventors: Richard Ewers, Cang Lam, Vahid Saadat
  • Publication number: 20050288558
    Abstract: A surgical wound retractor is adapted to dilate a wound stretchable to a desired diameter, the retractor includes a first ring having a diameter greater than that desired for the wound and being adapted for disposition interiorly of the wound. A second ring has a diameter greater than that desired for the wound and is adapted for disposition exteriorly of the wound. A plurality of retraction elements are disposed in a generally cylindrical relationship to each other, between the first ring and the second ring. These elements extend through the wound to exert a radial retraction force on the wound which is dependent on the distance separating the first ring and the second ring. Retraction elements, both distensible and non-distensible are contemplated with appropriate attachment means at the rings to provide for variations in the retraction force. With a suitable retraction sleeve, a third ring can be provided to form a circumferential retainer to vary the retraction force.
    Type: Application
    Filed: September 1, 2005
    Publication date: December 29, 2005
    Inventors: Richard Ewers, John Brustad, Edward Pingleton, Nabil Hilal, Payam Adlparvar, Scott Taylor, Gary Dulak, Michael Dunn, Norman Morales, Charles Hart, Robert Bowes
  • Publication number: 20050277981
    Abstract: Apparatus and methods for optimizing anchoring force are described herein. In securing tissue folds, over-compression of the tissue directly underlying the anchors is avoided by utilizing tissue anchors having expandable arms configured to minimize contact area between the anchor and tissue. When the anchor is in its expanded configuration, a load is applied to the anchor until it is optimally configured to accommodate a range of deflections while the anchor itself exerts a substantially constant force against the tissue. Various devices, e.g., stops, spring members, fuses, strain gauges, etc., can be used to indicate when the anchor has been deflected to a predetermined level within the optimal range. Moreover, other factors to affect the anchor characteristics include, e.g., varying the number of arms or struts of the anchor, positioning of the arms, configuration of the arms, the length of the collars, etc.
    Type: Application
    Filed: June 9, 2004
    Publication date: December 15, 2005
    Applicant: USGI Medical Inc.
    Inventors: Tracy Maahs, Richard Ewers, Vahid Saadat, Alex Khairkhahan, Kenneth Michlitsch
  • Publication number: 20050277983
    Abstract: Systems for optimizing anchoring force are described herein. In securing tissue folds, over-compression of the tissue directly underlying the anchors is avoided by utilizing tissue anchors having expandable arms configured to minimize contact area between the anchor and tissue. When the anchor is in its expanded configuration, a load is applied to the anchor until it is optimally configured to accommodate a range of deflections while the anchor itself exerts a substantially constant force against the tissue. Various devices, e.g., stops, spring members, fuses, strain gauges, etc., can be used to indicate when the anchor has been deflected to a predetermined level within the optimal range. Moreover, other factors to affect the anchor characteristics include, e.g., varying the number of arms or struts of the anchor, positioning of the arms, configuration of the arms, the length of the collars, etc.
    Type: Application
    Filed: June 9, 2004
    Publication date: December 15, 2005
    Applicant: USGI Medical INC.
    Inventors: Vahid Saadat, Richard Ewers, Tracy Maahs, Alex Khairkhahan, Kenneth Michlitsch
  • Publication number: 20050277966
    Abstract: Apparatus & methods for optimizing anchoring force are described herein. In securing tissue folds, over-compression of the tissue directly underlying the anchors is avoided by utilizing tissue anchors having expandable arms configured to minimize contact area between the anchor and tissue. When the anchor is in its expanded configuration, a load is applied to the anchor until it is optimally configured to accommodate a range of deflections while the anchor itself exerts a substantially constant force against the tissue. Various devices, e.g., stops, spring members, fuses, strain gauges, etc., can be used to indicate when the anchor has been deflected to a predetermined level within the optimal range. Moreover, other factors to affect the anchor characteristics include, e.g., varying the number of arms or struts of the anchor, positioning of the arms, configuration of the arms, the length of the collars, etc.
    Type: Application
    Filed: July 11, 2005
    Publication date: December 15, 2005
    Applicant: USGI Medical Inc.
    Inventors: Richard Ewers, Shirley Vong, Vahid Saadat
  • Publication number: 20050272977
    Abstract: Methods and apparatus for performing endoluminal procedures are described herein. An endoluminal tissue manipulation assembly is disclosed which provides for a stable endoluminal platform and which also provides for effective triangulation of tools. Such an apparatus may comprise an optionally shape-lockable elongate body defining a longitudinal axis and adapted for endoluminal advancement in a patient body, at least one articulatable visualization lumen disposed near or at a distal region of the elongate body, the at least one articulating visualization lumen being adapted to articulate off-axis relative to a longitudinal axis of the elongate body, and at least one articulatable tool arm member disposed near or at the distal region of the elongate body, the at least one articulatable tool arm member being adapted to articulate off-axis and manipulate a tissue region of interest.
    Type: Application
    Filed: May 13, 2005
    Publication date: December 8, 2005
    Applicant: USGI Medical Inc.
    Inventors: Vahid Saadat, Chris Rothe, Richard Ewers, Gilbert Madrid
  • Publication number: 20050251206
    Abstract: Apparatus and methods for positioning and securing anchors are disclosed herein. The anchors are adapted to be delivered and implanted into or upon tissue, particularly tissue within the gastrointestinal system of a patient. The anchor is adapted to slide uni-directionally over suture such that a tissue plication may be cinched between anchors. A locking mechanism either within the anchor itself of positioned proximally of the anchor may allow for the uni-directional translation while enabling the anchor to be locked onto the suture if the anchor is pulled, pushed, or otherwise urged in the opposite direction along the suture. This uni-directional anchor locking mechanism facilitates the cinching of the tissue plication between the anchors and it may be utilized in one or several anchors in cinching a tissue fold.
    Type: Application
    Filed: May 7, 2004
    Publication date: November 10, 2005
    Inventors: Tracy Maahs, Richard Ewers, Jesus Flores, Alex Khairkhahan, Ruey-Feng Peh, Vahid Saadat, Cang Lam
  • Publication number: 20050251165
    Abstract: Tissue manipulation and securement systems are described herein. A tissue manipulation assembly is pivotably coupled to the distal end of a tubular member and has a lower jaw member and an upper jaw member pivotably coupled to the lower jaw member. A reconfigurable launch tube is also pivotably coupled to the upper jaw member and is used to urge the jaw members from a low-profile configuration to an open configuration for receiving tissue. The tissue manipulation assembly may be advanced through a shape-lockable endoscopic device, a conventional endoscope, or directly by itself into a patient. A second tool can be used in combination with the tissue manipulation assembly to engage tissue and manipulate the tissue in conjunction with the tissue manipulation assembly.
    Type: Application
    Filed: March 1, 2005
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Robert Vaughan, Cang Lam, Richard Ewers, Vahid Saadat
  • Publication number: 20050250987
    Abstract: Removable apparatus and methods for manipulating and securing tissue are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have tissue stabilizing members adapted to stabilize tissue therebetween, an engagement member slidably disposed through the stabilizing members and having a distal end adapted to engage tissue, and a delivery tube pivotable about the tissue stabilizing members. The tissue manipulation assembly optionally may be configured for removable attachment to an endoscope.
    Type: Application
    Filed: December 1, 2004
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Richard Ewers, Vahid Saadat, Cang Lam, Chris Rothe
  • Publication number: 20050250980
    Abstract: The present invention provides methods for performing gastroplasty by reducing the effective volume or cross-sectional area of the stomach via approximation of gastric tissue. Such reduction preferably is achieved endoluminally, either with or without laparoscopic ports. In one variation, a sleeve, pouch, Magenstrasse and Mill, Vertical Banded Gastroplasty (“VBG”), etc., is formed within the stomach by approximating opposing anterior and posterior segments or ridges of the stomach wall at locations inferior to the gastroesophageal junction. In another variation, opposing walls of the stomach are approximated at a plurality of substantially random locations to reduce an effective volume of the stomach. In yet another variation, both a sleeve and random approximations are formed, the random approximations preferably disposed in a portion of the stomach excluded by the sleeve. In still another variation, opposing walls of the stomach are approximated over significant lengths at random or specified locations.
    Type: Application
    Filed: May 7, 2004
    Publication date: November 10, 2005
    Inventors: Lee Swanstrom, Richard Ewers, Tracy Maahs, Eugene Chen, Vahid Saadat
  • Publication number: 20050251160
    Abstract: Apparatus for manipulating and securing tissue are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have an elongate tubular member, an engagement member slidably disposed through the tubular member and a distal end adapted to engage tissue via a helical member, tissue stabilizing members positioned at the tubular member distal end which are adapted to stabilize tissue therebetween, and a delivery tube pivotable about the tissue stabilizer. The stabilizing members can be adapted to become angled relative to a longitudinal axis of the elongate tubular member. Moreover, one or all the articulation controls and functions can be integrated into a singular handle assembly connectable to the tissue manipulation assembly via a rigid or flexible tubular body.
    Type: Application
    Filed: September 29, 2004
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Vahid Saadat, Richard Ewers, Cang Lam, Robert Vaughan, Chris Rothe, Kenneth Michlitsch
  • Publication number: 20050250986
    Abstract: Removable apparatus and methods for manipulating and securing tissue are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have tissue stabilizing members adapted to stabilize tissue therebetween, an engagement member slidably disposed through the stabilizing members and having a distal end adapted to engage tissue, and a delivery tube pivotable about the tissue stabilizing members. The tissue manipulation assembly optionally may be configured for removable attachment to an endoscope.
    Type: Application
    Filed: December 1, 2004
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Chris Rothe, Richard Ewers, Vahid Saadat, Cang Lam
  • Publication number: 20050251091
    Abstract: Apparatus and methods for transgastric tissue manipulation are described herein. Procedures are performed transgastrically through a trocar or insert, e.g., to create tissue plications and approximating those plications towards one another for accomplishing gastroplasty procedures. The trocar is positioned through the abdominal wall of the patient and into the stomach. A multi-lumen insertion tool is positioned within the trocar and comprises one or several channels, e.g., two, three, or more channels as practicable, through the single insertion tool. Each of the channels is aligned and individually sealable with a reversible seal which allows for insertion or removal of a tool therethrough without comprising sealing of the entire trocar or port. A proximal section of the shafts comprise a flexible section to allow for the flexing of each respective control handle away from one another such that the surgeon can manipulate the tools without interference between the handles.
    Type: Application
    Filed: May 10, 2004
    Publication date: November 10, 2005
    Applicant: USGI MEDICAL INC.
    Inventors: Vahid Saadat, Richard Ewers
  • Publication number: 20050251157
    Abstract: Apparatus and methods for positioning and securing anchors are disclosed herein. The anchors are adapted to be delivered and implanted into or upon tissue, particularly tissue within the gastrointestinal system of a patient. The anchor is adapted to slide uni-directionally over suture such that a tissue plication may be cinched between anchors. A locking mechanism either within the anchor itself of positioned proximally of the anchor may allow for the uni-directional translation while enabling the anchor to be locked onto the suture if the anchor is pulled, pushed, or otherwise urged in the opposite direction along the suture. This unidirectional anchor locking mechanism facilitates the cinching of the tissue plication between the anchors and it may be utilized in one or several anchors in cinching a tissue fold.
    Type: Application
    Filed: May 7, 2004
    Publication date: November 10, 2005
    Inventors: Vahid Saadat, Tracy Maahs, Richard Ewers, Marvin Elmers, Jesus Flores, Alex Khairkhahan, Ruey-Feng Peh, Cang Lam
  • Publication number: 20050251205
    Abstract: Apparatus and methods for positioning and securing anchors are disclosed herein. The anchors are adapted to be delivered and implanted into or upon tissue, particularly tissue within the gastrointestinal system of a patient. The anchor is adapted to slide uni-directionally over suture such that a tissue plication may be cinched between anchors. A locking mechanism either within the anchor itself of positioned proximally of the anchor may allow for the uni-directional translation while enabling the anchor to be locked onto the suture if the anchor is pulled, pushed, or otherwise urged in the opposite direction along the suture. This uni-directional anchor locking mechanism facilitates the cinching of the tissue plication between the anchors and it may be utilized in one or several anchors in cinching a tissue fold.
    Type: Application
    Filed: May 7, 2004
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Richard Ewers, Tracy Maahs, Jesus Flores, Alex Khairkhahan, Ruey-Feng Peh, Vahid Saadat
  • Publication number: 20050251166
    Abstract: Tissue manipulation and securement systems are described herein. A tissue manipulation assembly is pivotably coupled to the distal end of a tubular member and has a lower jaw member and an upper jaw member pivotably coupled to the lower jaw member. A reconfigurable launch tube is also pivotably coupled to the upper jaw member and is used to urge the jaw members from a low-profile configuration to an open configuration for receiving tissue. The tissue manipulation assembly may be advanced through a shape-lockable endoscopic device, a conventional endoscope, or directly by itself into a patient. A second tool can be used in combination with the tissue manipulation assembly to engage tissue and manipulate the tissue in conjunction with the tissue manipulation assembly.
    Type: Application
    Filed: March 1, 2005
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Robert Vaughan, Cang Lam, Richard Ewers, Vahid Saadat
  • Publication number: 20050251189
    Abstract: Multi-position tissue manipulation assemblies are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have an elongate tubular member, an engagement member slidably disposed through the tubular member and a distal end adapted to engage tissue via a helical member, tissue stabilizing members positioned at the tubular member distal end which are adapted to stabilize tissue therebetween, and a delivery tube pivotable about the tissue stabilizer. One or all the articulation controls and functions can be integrated into a singular handle enclosure connectable to the tissue manipulation assembly via a rigid or flexible tubular body. A needle deployment mechanism may be positioned within the enclosure. Such a mechanism can have multiple positions adapted to lock and/or advance a needle assembly within the enclosure in a controlled manner as well as for deploying the anchor assembly.
    Type: Application
    Filed: September 29, 2004
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Vahid Saadat, Chris Rothe, Richard Ewers, Cang Lam, Robert Vaughan
  • Publication number: 20050251202
    Abstract: Interlocking tissue anchor apparatus and methods are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have an elongate tubular member, an engagement member slidably disposed through the tubular member and a distal end adapted to engage tissue via a helical member, tissue stabilizing members positioned at the tubular member distal end which are adapted to stabilize tissue therebetween, and a delivery tube pivotable about the tissue stabilizer. Anchor assemblies can be delivered via the tissue manipulation assembly into or through the tissue. The anchors can incorporate various temporary interlocking features or spacing elements between one another to ensure that an anchor is not prematurely ejected from the needle assembly. This allows the anchor assembly to be advanced distally as well as withdrawn proximally within a deployment sheath while avoiding inadvertently ejecting an anchor.
    Type: Application
    Filed: September 30, 2004
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Richard Ewers, Tracy Maahs, Cang Lam, Vahid Saadat, Chris Rothe
  • Publication number: 20050251162
    Abstract: Apparatus and methods for manipulating and securing tissue are described herein. In creating tissue folds within the body of a patient, a tissue manipulation assembly may generally have an elongate tubular member, an engagement member slidably disposed through the tubular member and a distal end adapted to engage tissue via a helical member, tissue stabilizing members positioned at the tubular member distal end which are adapted to stabilize tissue therebetween, and a delivery tube pivotable about the tissue stabilizer. The stabilizing members can be adapted to become angled relative to a longitudinal axis of the elongate tubular member. Moreover, one or all the articulation controls and functions can be integrated into a singular handle assembly connectable to the tissue manipulation assembly via a rigid or flexible tubular body.
    Type: Application
    Filed: September 29, 2004
    Publication date: November 10, 2005
    Applicant: USGI Medical Inc.
    Inventors: Chris Rothe, Richard Ewers, Cang Lam, Vahid Saadat, Kenneth Michlitsch