Patents by Inventor Dale R. Schulze

Dale R. Schulze 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: 6547799
    Abstract: An instrument for everting an end of a vessel. The instrument has a tubular member having an axial bore, a distal end and a proximal end. The instrument further also has an elastic membrane sealably mounted on the distal end of the tubular member, a plunger slidably mounted within the axial bore of the body, a spring operationally engaged to the plunger for biasing the plunger in the distal direction and distending the membrane for insertion into the vessel, a distally extending mandrel mounted to the plunger, a sleeve slidably mounted over the membrane and at least a portion of the tubular member, and a proximal seal mounted in the proximal end of the axial bore so that the membrane, the proximal seal, and the axial bore define a sealed chamber.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: April 15, 2003
    Assignee: Ethicon, Inc.
    Inventors: Christopher J. Hess, Rudolph H. Nobis, Michael F. Clem, Gary W. Knight, Dale R. Schulze
  • Publication number: 20030065341
    Abstract: A method for implementing vascular anastomosis in the attachment of a graft vessel to a target vessel such as a coronary artery, and subsequently creating a passageway between the vessels in order to establish fluid flow communication therebetween. Further is to the provision of novel devices which are utilized in implementing the steps of attaching a graft vessel to a target vessel such as a coronary artery through vascular anastomosis, and thereafter creating a fluid flow passageway therebetween.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 3, 2003
    Inventor: Dale R. Schulze
  • Publication number: 20030065351
    Abstract: A surgical instrument for dissecting a vessel in a patient. The surgical instrument includes a spoon retractor having a proximal end and a distal end, said spoon retractor defining a working space in the tissue of a patient, a dissecting element proximate to the spoon retractor for dissecting tissue from a vessel, and a handle for manipulating the spoon retractor near the vessel. Also provided is a method for dissecting a vessel including the steps of providing the surgical instrument for dissecting a vessel in a patient described above. Making an incision in a patient. Inserting the spoon retractor into the incision. Creating a working space in the tissue of the patient near the vessel being dissected, and manipulating the dissecting element to further dissect tissue surrounding the vessel being dissected.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 3, 2003
    Inventors: Christopher J. Hess, Michael F. Clem, Gary W. Knight, Rudolph H. Nobis, Dale R. Schulze
  • Publication number: 20030065342
    Abstract: A surgical device including: a punch slidingly disposed in a housing for forming a hole in a first vessel; a cartridge movably disposed in the housing between a cutting and deploying positions, the cartridge having a second vessel and a coupler for coupling the first and second vessel loaded therein; a punch actuator for sliding the punch between the cutting and deploying positions; a cartridge actuator for moving the cartridge between the cutting and deploying positions, wherein while in the cutting position, the punch and cartridge are in position to permit the punch to form the hole in the first vessel and while in the deploying position, they are in position to deploy the second vessel; and a deployment mechanism for deploying the second vessel and coupler into the hole of the first vessel while the punch and cartridge are in the deploying position to create an anastomosis.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 3, 2003
    Inventors: Rudolph H. Nobis, Christopher J. Hess, Gary W. Knight, Michael F. Clem, Dale R. Schulze
  • Publication number: 20030065323
    Abstract: An endoscopic device including a shaft having a lumen for insertion of an endoscope therethrough, a transparent headpiece defining a workspace and disposed at a distal end of the shaft, a handle disposed at a proximal end of the shaft, a plunger disposed at the distal end of the shaft and movable between a retracted and extended position, wherein in the extended position the plunger interacts with at least a portion of the headpiece to capture a vessel therebetweeen, an actuator for moving the plunger between the retracted and extended positions, and a ligator for cauterizing the vessel captured between the plunger and the portion of the headpiece.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 3, 2003
    Inventors: Christopher J. Hess, Michael F. Clem, Gary W. Knight, Rudolph H. Nobis, Dale R. Schulze
  • Publication number: 20030065348
    Abstract: An endoscopic vessel harvesting device and a method of endoscopic harvesting of vessels from a patients body. The method comprises locating the vessel, and inserting the vessel harvesting device through an incision. Dissecting the vessel from the surrounding tissue, and capturing side branch vessels in a vessel capturing means. Ligating and transecting the side branch vessels using electrodes and a knife located in the vessel capturing means. Finally, ligating and transecting the vessel, and removing the vessel from the patients body. The vessel harvesting device comprises a head piece, a shaft having a lumen for receiving an endoscope, and a vessel capturing means located on the head piece for capturing the side branch vessels in the receiver.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 3, 2003
    Inventors: Christopher J. Hess, Michael F. Clem, Gary W. Knight, Rudolph H. Nobis, Dale R. Schulze
  • Publication number: 20030065325
    Abstract: A surgical device for applying radio frequency energy to a portion of a captured vessel is provided. The device including: a first tube having an internal lumen for passage of a viewing device therein, the first tube having a substantially transparent first window at a distal tip thereof; a second tube slidingly disposed over the first tube, the second tube having a substantially transparent second window at a distal tip thereof, the second tube further having a slot for capturing a portion of the vessel; an actuator for sliding the second tube relative to the first tube between open and closed positions, wherein in the closed position an inner surface of the second window is aligned with an outer surface of the first window and captures the portion of the vessel therebetween; and at least one electrode affixed to one of the inner or outer surfaces and facing the other of the inner or outer surfaces for applying radio frequency energy to the captured portion of the vessel.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 3, 2003
    Inventors: Dale R. Schulze, Michael F. Clem, Gary W. Knight, Christopher J. Hess, Rudolph H. Nobis, Gary L. Long
  • Publication number: 20030050652
    Abstract: An instrument for everting an end of a vessel over an end of a tubular workpiece. The instrument has a body having an axial bore, and a mandrel mounted within the axial bore and partially extending from the distal end of the axial bore. The mandrel is made from a sheet of spring-like material rolled into a conical shape. The distal end of the mandrel is insertable into the lumen of the vessel. A plunger substantially contained within the axial bore and axially moveable, extends into the proximal end of the mandrel and presses against an inner surface of the mandrel when the plunger is moved from a retracted position to an extended position, thereby causing the distal end of the mandrel to expand radially and the proximal end of the mandrel to contract radially. An optional spring mounted to the body provides a biasing force to move the plunger to the retracted position and to allow the mandrel to return to the conical shape.
    Type: Application
    Filed: September 10, 2001
    Publication date: March 13, 2003
    Inventor: Dale R. Schulze
  • Publication number: 20030050651
    Abstract: An instrument is provided for everting an end of a vessel over an end of a tubular workpiece, wherein a portion of the vessel is positioned within an axial bore of the tubular workpiece. The instrument comprises a conical holder comprising a first end, a second end, a longitudinal axis, and a lumen therethrough. The conical holder is positionable coaxially with the axial bore of the tubular workpiece. The lumen at the first end has a first diameter smaller than the diameter of the end of the tubular workpiece when extended distal to the end of the tubular workpiece. The first end is radially expandable so that the lumen at the first end is larger than the end of the tubular workpiece. The instrument further comprises a mandrel having a first end, a second end, and a longitudinal axis therebetween. The first end of the mandrel is insertable into the first end of the conical holder. The mandrel is tapered from a smaller diameter at said distal end to a larger diameter at said proximal end.
    Type: Application
    Filed: September 10, 2001
    Publication date: March 13, 2003
    Inventors: Gary W. Knight, Dale R. Schulze
  • Publication number: 20030004524
    Abstract: An instrument is provided for everting an end of a vessel over an end of a tubular workpiece. The instrument comprises a body having an axial bore, a piston slideably contained inside of the axial bore, and a plunger coaxially mounted within the axial bore and axially movable between an extended position and a retracted position. The instrument further comprises a spring mounted within the axial bore and biasing the plunger and the piston to separate. The instrument further comprises a plurality of filaments, each filament having a distal end attached to the plunger and a proximal end attached to the piston, and each of the filaments tensioned by the spring. The instrument further comprises a plurality of guides circumferentially spaced apart in the distal end of the body, each guide supporting one of the filaments radially apart from the plunger, the plunger and the filaments insertable into the lumen of the vessel when the plunger is in the extended position.
    Type: Application
    Filed: June 28, 2001
    Publication date: January 2, 2003
    Inventors: Dale R. Schulze, Michael F. Clem
  • Publication number: 20030004513
    Abstract: A bone plating apparatus includes a handle having extending therefrom a tissue expander for insertion through a skin incision and through the subcutaneous tissue surrounding a fractured bone. A bone plate may be secured to the handle during advancement of the tissue expander so as to deliver the bone plate to a desired location proximate to the fractured bone. Both the tissue expander and the bone plate may be advanced to the desired location proximate to the fractured bone under the visualization of an endoscope. A screw alignment jig is secured to the handle and has a guide hole which aligns with an access hole of the tissue expander. The alignment of the guide hole and the access hole allow for percutaneous screw insertion into the delivered bone plate. A method for plating a fractured bone is also disclosed.
    Type: Application
    Filed: May 24, 2002
    Publication date: January 2, 2003
    Inventors: Pamela C. Guzman, Michael A. Wack, Dale R. Schulze, Gary W. Knight, Christopher J. Hess, Rudolph H. Nobis, Michael F. Clem, Ronald J. Kolata
  • Publication number: 20020198545
    Abstract: An instrument for everting an end of a vessel. The instrument has a tubular member having an axial bore, a distal end and a proximal end. The instrument further also has an elastic membrane sealably mounted on the distal end of the tubular member, a plunger slidably mounted within the axial bore of the body, a spring operationally engaged to the plunger for biasing the plunger in the distal direction and distending the membrane for insertion into the vessel, a distally extending mandrel mounted to the plunger, a sleeve slidably mounted over the membrane and at least a portion of the tubular member, and a proximal seal mounted in the proximal end of the axial bore so that the membrane, the proximal seal, and the axial bore define a sealed chamber.
    Type: Application
    Filed: June 26, 2001
    Publication date: December 26, 2002
    Inventors: Christopher J. Hess, Rudolph H. Nobis, Michael F. Clem, Gary W. Knight, Dale R. Schulze
  • Publication number: 20020198546
    Abstract: An instrument for everting an end of a vessel. The instrument has a frame and a mandrel having a distal end and a proximal end. The mandrel is mounted to the frame and axially movable. The distal end of the mandrel is insertable into the lumen of a vessel. A first wiping element and an opposed second wiping element are mounted to the frame with the mandrel positioned therebetween. The first and second wiping elements are laterally movable from a spaced-apart position to a closed position.
    Type: Application
    Filed: June 26, 2001
    Publication date: December 26, 2002
    Inventor: Dale R. Schulze
  • Publication number: 20020198525
    Abstract: A bipolar electrosurgical instrument useful in harvesting blood vessels such as veins and arteries. The instrument has a pair of jaws and a central cutting element displaceable distally and proximally to dissect tissue contained between the jaws. The instrument has offset electrodes.
    Type: Application
    Filed: August 16, 2002
    Publication date: December 26, 2002
    Inventors: Dale R. Schulze, Rudolph H. Nobis
  • Publication number: 20020177849
    Abstract: A surgical instrument useful in harvesting blood vessels such as veins and arteries. The instrument has a pair of jaws and a central cutting element displaceable distally and proximally to dissect tissue contained between the jaws. The distal ends of the jaws form a dissecting tip.
    Type: Application
    Filed: July 9, 2002
    Publication date: November 28, 2002
    Inventors: Dale R. Schulze, Gary W. Knight, Christopher J. Hess
  • Publication number: 20020173801
    Abstract: An instrument is provided for everting an end of a vessel, preferably over an end of a tubular workpiece. The instrument has a curved mandrel having a proximal end and a distal end. The distal end of the curved mandrel is insertable to a predetermined depth into the lumen of the vessel contained in the bore of the workpiece. The curved mandrel holds the vessel against the bore surface of the workpiece at three spaced-apart contact regions when it is inserted into the bore of the workpiece and the vessel lumen to the predetermined depth. The curved mandrel is mounted to a handle.
    Type: Application
    Filed: May 21, 2001
    Publication date: November 21, 2002
    Inventor: Dale R. Schulze
  • Publication number: 20020173802
    Abstract: An instrument and a method of use are provided for everting an end of a vessel over an end of a tubular workpiece. The instrument comprises a holder made of a sheet of spring like material rolled into a conical shape having a proximal end with a large diameter relative to the vessel diameter and a distal end with a small diameter relative to the diameter of the vessel.
    Type: Application
    Filed: May 21, 2001
    Publication date: November 21, 2002
    Inventor: Dale R. Schulze
  • Patent number: 6464702
    Abstract: A bipolar electrosurgical instrument useful in harvesting blood vessels such as veins and arteries. The instrument has a pair of jaws and a central cutting element displaceable distally and proximally to dissect tissue contained between the jaws. The instrument has offset electodes.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: October 15, 2002
    Assignee: Ethicon, Inc.
    Inventors: Dale R. Schulze, Rudolph H. Nobis
  • Patent number: 6458128
    Abstract: A bipolar electrosurgical instrument useful in harvesting blood vessels such as veins and arteries. The instrument has a pair of jaws and a central cutting element displaceable distally and proximally to dissect tissue contained between the jaws. The central cutting element has an electrode surface.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: October 1, 2002
    Assignee: Ethicon, Inc.
    Inventor: Dale R. Schulze
  • Patent number: 6443970
    Abstract: A surgical instrument useful in harvesting blood vessels such as veins and arteries. The instrument has a pair of jaws and a central cutting element displaceable distally and proximally to dissect tissue contained between the jaws. The distal ends of the jaws form a dissecting tip.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: September 3, 2002
    Assignee: Ethicon, Inc.
    Inventors: Dale R. Schulze, Gary W. Knight, Christopher J. Hess