Patents by Inventor Jay A. Lenker

Jay A. Lenker 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: 20090163864
    Abstract: A system is disclosed for preventing air from entering a first catheter or cannula of a multi-catheter system. Air is prevented from entering the proximal end of the first catheter by an axially elongate chamber having an impeller, the chamber being affixed to the proximal end of the first catheter. The first catheter is affixed at an offset location, near the periphery of the chamber. The impeller is driven by a motor drive and imparts rotational energy to the fluid within the chamber forcing any air within the chamber to migrate to the center of the chamber by buoyancy effects. The air is removed through a port near the centerline of the chamber. Liquid removed with the air is returned to the chamber to minimize liquid loss during the procedure. Hemostasis valves or seals can be provided at the entrance and the exit of the chamber.
    Type: Application
    Filed: December 19, 2008
    Publication date: June 25, 2009
    Inventors: Eugene M. Breznock, Jay A. Lenker, David W. Wieting
  • Publication number: 20090149959
    Abstract: Spinal implants are disclosed that can be used for annular repair, facet unloading, disc height preservation, disc decompression, or for sealing a portal through which an intervertebral implant was placed. In some embodiments, an implant is placed within the intervertebral disc space, primarily within the region of the annulus fibrosus. In some embodiments, the implant is expandable. In some embodiments, the implant has a sealing tail structure comprising a tail flange and a linkage. In some embodiments, the sealing tail structure limits the extrusion or expulsion of disc material, either annulus fibrosus or nucleus, into the posterior region of the spine where it could impinge on nerves. In some embodiments, the tail structure is retained in place within the annulus fibrosus by means of an anchor. In some embodiments, the anchor is constructed from multiple components.
    Type: Application
    Filed: November 19, 2008
    Publication date: June 11, 2009
    Applicant: Magellan Spine Technologies, Inc.
    Inventors: E. Scott Conner, Jay A. Lenker, Khoi Nguyen, Jeffrey J. Valko, Matthew Scott Lake, Peter Gregory Davis
  • Publication number: 20090138015
    Abstract: Spinal implants are disclosed that can be used for annular repair, facet unloading, disc height preservation, disc decompression, or for sealing a portal through which an intervertebral implant was placed. In some embodiments, an implant is placed within the intervertebral disc space, primarily within the region of the annulus fibrosus. In some embodiments, the implant is expandable. In some embodiments, the implant has a sealing tail structure comprising a tail flange and a linkage. In some embodiments, the sealing tail structure limits the extrusion or expulsion of disc material, either annulus fibrosus or nucleus, into the posterior region of the spine where it could impinge on nerves. In some embodiments, the tail structure is retained in place within the annulus fibrosus by means of an anchor. In some embodiments, the anchor is constructed from multiple components.
    Type: Application
    Filed: November 19, 2008
    Publication date: May 28, 2009
    Applicant: Magellan Spine Technologies, Inc.
    Inventors: E. Scott CONNER, Jay A. Lenker, Khoi Nguyen, Jeffrey J. Valko, Matthew Scott Lake, Peter Gregory Davis
  • Publication number: 20090138084
    Abstract: Spinal implants are disclosed that can be used for annular repair, facet unloading, disc height preservation, disc decompression, or for sealing a portal through which an intervertebral implant was placed. In some embodiments, an implant is placed within the intervertebral disc space, primarily within the region of the annulus fibrosus. In some embodiments, the implant is expandable. In some embodiments, the implant has a sealing tail structure comprising a tail flange and a linkage. In some embodiments, the sealing tail structure limits the extrusion or expulsion of disc material, either annulus fibrosus or nucleus, into the posterior region of the spine where it could impinge on nerves. In some embodiments, the tail structure is retained in place within the annulus fibrosus by means of an anchor. In some embodiments, the anchor is constructed from multiple components.
    Type: Application
    Filed: November 19, 2008
    Publication date: May 28, 2009
    Applicant: Magellan Spine Technologies, Inc.
    Inventors: E. Scott CONNER, Jay A. Lenker, Khoi Nguyen, Jeffrey J. Valko, Matthew Scott Lake, Peter Gregory Davis
  • Patent number: 7524289
    Abstract: A rotationally vibrating imaging catheter and method of utilization has an array of ultrasound or optical transducers and an actuator along with signal processing, display, and power subsystems. The actuator of the preferred embodiment is a solid-state nitinol actuator. The actuator causes the array to oscillate such that the tip of the catheter is rotated through an angle equal to or less than 360 degrees. The tip is then capable of rotating back the same amount. This action is repeated until the desired imaging information is acquired. The rotationally vibrating catheter produces more imaging points than a non-rotating imaging catheter and eliminates areas of missing information in the reconstructed image. Rotationally vibrating catheters offer higher image resolution than stationary array catheters and greater flexibility and lower costs than mechanically rotating imaging catheters.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: April 28, 2009
    Inventor: Jay A. Lenker
  • Patent number: 7507216
    Abstract: Devices and methods are disclosed for achieving control and stabilization of bone fractures in mammals, most specifically humans. Stabilization and traction is often required to support fractured bones of the arms or legs. The devices and methods disclosed herein are especially useful in the emergency or military setting. The devices utilize a collapsible frame or inflatable member that may be expanded and locked into position. The frame or inflatable member is fabricated primarily from polymeric materials with low radiodensity. The limb contact regions are adjustable to fit a wide variety of limb sizes and fracture locations. The traction applied by the splint is adjustable, controllable and measurable. The traction splint is sufficiently compact that it will fit in a compartment of most ambulances and emergency rescue vehicles, thus making it more available for use than standard traction splints in use today. The traction splint is either a separate device or integrated into a backboard.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: March 24, 2009
    Assignee: Damage Control Surgical Technologies, Inc.
    Inventors: Robert F. Buckman, Jay A. Lenker, Donald J. Kolehmainen
  • Patent number: 7488448
    Abstract: A system for removing gas bubbles from blood during circulatory assist procedures. An active filter apparatus forces the bubbles to the center of the system where they are removed from the blood before the blood exits the filter.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: February 10, 2009
    Assignee: Indian Wells Medical, Inc.
    Inventors: David W. Wieting, Jay A. Lenker
  • Publication number: 20080294084
    Abstract: A device and method for achieving hemostasis and leakage control in vascular structures and other body ducts or vessels in an emergency room or trauma situation. The device has at least one shunt that contains an obturator on an end of the shunt. The shunt is inserted into a damaged vessel or lumen for sealing the leak or hemorrhage. Two shunts that both contain obturators on one of their ends can be inserted into two different vessels or lumens when the vessel or lumen has been severed. The obturators allow for the improved ease of insertion into the vessel or lumen. The two shunts are then releasably attached to restore fluid communication through the vessel or lumen. The shunt is placed temporarily within the patient and then removed when definitive repair can be achieved by a qualified physician.
    Type: Application
    Filed: February 19, 2008
    Publication date: November 27, 2008
    Inventors: Robert F. Buckman, Jay A. Lenker, Donald J. Kolehmainen
  • Publication number: 20080243224
    Abstract: A stent and stent catheter for intra-cranial use, and a method of treating vascular disease in blood vessels in the brain.
    Type: Application
    Filed: June 10, 2008
    Publication date: October 2, 2008
    Inventors: George Wallace, Jay Lenker, Thomas J. Berryman, Robert R. Greene, Rodney Brenneman
  • Publication number: 20080243081
    Abstract: Disclosed is an expandable transluminal sheath, for introduction into the body while in a first, low cross-sectional area configuration, and subsequent expansion of at least a part of the distal end of the sheath to a second, enlarged cross-sectional configuration. The sheath is configured for use in the vascular system and has utility in the performance of procedures in the left atrium. The access route is through the inferior vena cava to the right atrium, where a trans-septal puncture, followed by advancement of the catheter is completed. The distal end of the sheath is maintained in the first, low cross-sectional configuration during advancement to the right atrium and through the atrial septum into the left atrium. The distal end of the sheath is subsequently expanded using a radial dilatation device.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 2, 2008
    Applicant: Onset Medical, Inc.
    Inventors: Edward J. Nance, Jay Lenker, Hyun T. Nguyen
  • Publication number: 20080243229
    Abstract: A stent and stent catheter for intra-cranial use.
    Type: Application
    Filed: January 29, 2008
    Publication date: October 2, 2008
    Inventors: George Wallace, Jay Lenker, Thomas J. Berryman
  • Publication number: 20080215008
    Abstract: Disclosed is an expandable transluminal sheath, for introduction into the body while in a first, low cross-sectional area configuration, and subsequent expansion of at least a part of the distal end of the sheath to a second, enlarged cross-sectional configuration. The sheath is configured for use in the vascular system and has utility in the performance of procedures in the left atrium. The access route is through the inferior vena cava to the right atrium, where a trans-septal puncture, followed by advancement of the catheter is completed. The distal end of the sheath is maintained in the first, low cross-sectional configuration during advancement to the right atrium and through the atrial septum into the left atrium. The distal end of the sheath is subsequently expanded using a radial dilatation device.
    Type: Application
    Filed: December 18, 2007
    Publication date: September 4, 2008
    Inventors: Edward J. Nance, Jay Lenker, George F. Kick, Hyun T. Nguyen
  • Publication number: 20080200943
    Abstract: An expandable medical sheath is configured to be introduced into a body in a first, low cross-sectional area configuration, and expanded to a second, enlarged cross-sectional configuration. The sheath is maintained in the first, low cross-sectional configuration by structures or elements within the sheath wall that maintain a collapsed shape. Upon expansion with a dilator, the sheath maintains a second, enlarged cross-sectional configuration by elements or structures within the sheath tubing wall that resist re-collapse. The sheath includes a nose cone or tapered fairing to deflect tissue from entering the collapsed distal end of the sheath during introduction. The fairing collapses following expansion and subsequent deflation of the dilator, thus allowing the tapered fairing to be withdrawn proximally through the central lumen of the sheath. In one application, the sheath is utilized to provide access for a diagnostic or therapeutic procedure such as percutaneous nephrostomy or urinary bladder access.
    Type: Application
    Filed: December 7, 2007
    Publication date: August 21, 2008
    Inventors: Peter Barker, Jay Lenker, Edward Nance
  • Publication number: 20080183136
    Abstract: Disclosed is an expandable transluminal sheath, for introduction into the body while in a first, low cross-sectional area configuration, and subsequent expansion of at least a part of the distal end of the sheath to a second, enlarged cross-sectional configuration. The sheath is configured for use in the vascular system and has utility in the introduction and removal of balloon counterpulsation catheters. The access route is through the femoral arteries and the iliac arteries into the aorta, where an intra-aortic balloon pump catheter is positioned to provide cardiac support. The distal end of the sheath is maintained in the first, low cross-sectional configuration during advancement to the arteries into the aorta. The distal end of the sheath is subsequently expanded using a radial dilatation device.
    Type: Application
    Filed: January 28, 2008
    Publication date: July 31, 2008
    Applicant: Onset Medical Corporation
    Inventors: Jay A. Lenker, Joseph Bishop, George F. Kick, Edward J. Nance
  • Patent number: 7384426
    Abstract: A stent and stent catheter for intra-cranial use. The stent is a rolled sheet stent and is releasably mounted on the distal tip of the catheter by means of a non-sliding retention and release mechanism. The non-sliding release mechanism is operated remotely at the proximal end of the catheter by means of a linear translator. The stent is rolled tightly on the distal tip of the catheter and flexibility of the tightly rolled stent is promoted by ribbed or slatted construction (or, alternatively, slotted construction) in which the various layers of the stent are provided with numerous slats which counter align when the stent is expanded to form an imperforate wall from a plurality of perforate layers.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: June 10, 2008
    Assignee: Micro Therapeutics, Inc.
    Inventors: George Wallace, Jay Lenker, Thomas J. Berryman, Robert R. Greene, Rodney Brenneman
  • Publication number: 20080132820
    Abstract: Devices and methods are disclosed for achieving hemostasis in patients who have received skin-penetrating wounds to the periphery, including the head, arms, and legs. Such haemostatic packing devices and methods are especially useful in the emergency, trauma surgery, or military setting. The devices utilize fluid impermeable barriers surrounded by exterior dams and pressure to achieve tamponade and hemostasis, primarily by exertion of force to hold the dams against the skin surrounding a wound. The devices are capable of serving as carriers for thrombogenic, antimicrobial or antipathogenic agents. The devices do not require the use of adhesives to work as they are attached to the patient using mechanical locking devices. Peripheral haemostatic packing devices include optional adhesive hemostatic barriers to attach at least a portion of the device to the skin or to assist with initial coupling of a hold-down strap to another strap using a more secure mechanical lock.
    Type: Application
    Filed: January 31, 2008
    Publication date: June 5, 2008
    Inventors: Robert F. Buckman, Jay A. Lenker, Donald J. Kolehmainen
  • Publication number: 20080132915
    Abstract: Devices and methods for achieving hemostasis and leakage control in hollow body vessels such as the small and large intestines, arteries, and veins as well as ducts leading to the gall bladder and other organs. The devices and methods disclosed herein are especially useful in the emergency, trauma surgery or military setting, and most especially during damage control procedures. In such cases, the patient may have received trauma to the abdomen, extremities, neck or thoracic region. The devices utilize removable or permanently implanted, broad, soft, parallel jaw clips with minimal projections to maintain vessel contents without damage to the tissue comprising the vessel. These clips are applied using either standard instruments or custom devices that are subsequently removed leaving the clips implanted, on a temporary or permanent basis, to provide for hemostasis or leakage prevention, or both. These clips overcome the limitations of clips and sutures that are currently used for the same purposes.
    Type: Application
    Filed: January 28, 2008
    Publication date: June 5, 2008
    Inventors: Robert F. Buckman, Jay A. Lenker, Donald J. Kolehmainen
  • Patent number: 7335215
    Abstract: A device and method for achieving hemostasis and leakage control in vascular structures and other body ducts or vessels in an emergency room or trauma situation. The device has at least one shunt that contains an obturator on an end of the shunt. The shunt is inserted into a damaged vessel or lumen for sealing the leak or hemorrhage. Two shunts that both contain obturators on one of their ends can be inserted into two different vessels or lumens when the vessel or lumen has been severed. The obturators allow for the improved ease of insertion into the vessel or lumen. The two shunts are then releasably attached to restore fluid communication through the vessel or lumen. The shunt is placed temporarily within the patient and then removed when definitive repair can be achieved by a qualified physician.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: February 26, 2008
    Assignee: Damage Control Surgical Technologies, Inc.
    Inventors: Robert F. Buckman, Jay A. Lenker, Donald J. Kolehmainen
  • Publication number: 20080046005
    Abstract: Devices and methods are disclosed for achieving hemostasis at a wound site following an endovascular procedure. Such wound sealing is necessary generally following a percutaneous procedure where a percutaneous cannula is withdrawn from the vasculature leaving an entry site to the vessel that could bleed if steps are not taken to stop said bleeding. The devices and methods disclosed herein are especially useful in the catheterization laboratory following interventional cardiology or interventional neuroradiology procedures. The devices utilize the introduction sheath that was originally used for the procedure as a guide for the closure. The closure device is inserted through the introduction sheath once any therapeutic or diagnostic devices have been removed. The closure device comprises a two-part sealing material housed in a reservoir system, a mixing chamber, a delivery cannula, exit ports, and a vessel location device.
    Type: Application
    Filed: July 23, 2007
    Publication date: February 21, 2008
    Inventors: Jay Lenker, William Mezger
  • Patent number: 7329792
    Abstract: Devices and methods are disclosed for achieving hemostasis in patients who have received skin-penetrating wounds to the periphery, including the head, arms, and legs. Such haemostatic packing devices and methods are especially useful in the emergency, trauma surgery, or military setting. The devices utilize fluid impermeable barriers surrounded by exterior dams and pressure to achieve tamponade and hemostasis, primarily by exertion of force to hold the dams against the skin surrounding a wound. The devices are capable of serving as carriers for thrombogenic, antimicrobial or antipathogenic agents. The devices do not require the use of adhesives to work as they are attached to the patient using mechanical locking devices. Peripheral haemostatic packing devices include optional adhesive hemostatic barriers to attach at least a portion of the device to the skin or to assist with initial coupling of a hold-down strap to another strap using a more secure mechanical lock.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: February 12, 2008
    Assignee: Damage Control Surgical Technologies, Inc.
    Inventors: Robert F. Buckman, Jay A. Lenker, Donald J. Kolehmainen