Including Means Forcing Inflation Fluid Into Inflatable Means Patents (Class 604/97.01)
  • Patent number: 9439725
    Abstract: A balloon ablation catheter achieves reduction in diameter of the balloon upon balloon contraction and increased reliability of the thermocouple temperature sensor, which balloon ablation catheter is less likely to be influenced by the heating liquid discharged into the balloon and able to control the balloon surface temperature with high accuracy.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: September 13, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Hiroyuki Harada, Motoki Takaoka, Akinori Matsukuma, Takahiro Yagi
  • Patent number: 9126008
    Abstract: The present invention discloses a catheter and method of using a catheter with two balloons and at least one inlet opening located on the proximal end of the catheter. The two balloons are adapted to retain the catheter within the body cavity and facilitate the flow of gases and fluids into one or more inlet openings. The invention also provides inlet openings located at different levels of the catheter tube to allow for complete drainage of fluid from the body cavity. The unique design of the present invention provides complete drainage of a body cavity and reduces damage and trauma to the body cavity.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: September 8, 2015
    Inventor: Sungyul D Kim
  • Patent number: 8986340
    Abstract: A balloon dilation catheter includes a substantially rigid inner guide member and a movable shaft coupled to a balloon that is slidably mounted on the substantially rigid inner guide member. To treat a sinus cavity of a subject using the balloon dilation the substantially rigid inner guide member is advanced into a drainage pathway of the sinus (e.g., frontal recess) of the subject via a nasal passageway. The shaft and balloon are advanced in a distal direction over the substantially rigid inner guide member to place the balloon in the drainage pathway. The balloon is inflated to expand or otherwise remodel the drainage pathway.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: March 24, 2015
    Assignee: Entellus Medical, Inc.
    Inventors: John R. Drontle, Anthony J. Hanson
  • Patent number: 8974409
    Abstract: A catheter used for treatment of complex vasculature, such as a bifurcated aneurysm, is provided with an inflatable balloon at a distal portion thereof. The shape, location and material of the inflatable balloon are selected such that when inflated, the balloon conforms to the shape of the complex vasculature, or at least a portion thereof, without appreciably deforming the vessel walls. In this manner, the balloon can be used to control flow in the vasculature, for example occluding a selected branch of the vasculature during introduction of material in order concentrate the material and minimize its disbursement by blood flow.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: March 10, 2015
    Assignee: Covidien LP
    Inventors: Douglas Ray Hayman, Peter Gregory Davis, Maria De Jesus Sanson, Komonn Lim Reedy, Todd Jeffrey Hewitt
  • Publication number: 20150051542
    Abstract: The body has a fluid inlet port for receiving pressurized fluid and a fluid outlet port connected to the retention balloon. A first passage connects the fluid inlet port and the fluid outlet port. A second passage in the body is connected to the balloon fluid return path and is at the pressure of the retention balloon. A valve prevents fluid flow through the first passage when actuated. The valve includes a pressure-responsive member movable to a position to obstruct fluid flow in response to fluid pressure in the second passage exceeding the predetermined level. Flexible means such as a membrane defines a normally open portion of the first fluid passage, which is closed by the moveable means bearing on the membrane when pressure exceeding the predetermined level actuates the valve.
    Type: Application
    Filed: July 25, 2014
    Publication date: February 19, 2015
    Applicant: CONVATEC TECHNOLOGIES INC.
    Inventors: Christopher Gregory, Yun Jin, John B. Cline
  • Patent number: 8956379
    Abstract: The present invention relates to devices and systems that alter intracranial compliance, cerebral blood flow and/or intracranial pressure pulsatility/waveform by oscillating the contraction and expansion of a compressible composition within the cranial or spinal cavities such that they increase intracranial capacity. The contraction and expansion of the compressible composition in the oscillating compliance devices can be due to an individual's intracranial pressure, the result of the expansion and compression of a reservoir which is mediated by the contractility of the heart or driven by a pump gaited to a biorhythm. The invention also relates to methods for protecting an individual's brain from abnormal arterial pulsations and for altering an individual's cerebral blood flow using the devices and systems of the invention.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: February 17, 2015
    Assignee: The Cleveland Clinic Foundation
    Inventors: Mark G. Luciano, Stephen M. Dombrowski
  • Publication number: 20140358075
    Abstract: A hemostasis component for an invasive medical device has an inflatable cylinder affixed to the medical device at a location aligned with an ingress point of a patient. An inflation source is in fluid communication with the inflatable cylinder and a flow control valve that is effective to regulate the flow of fluid from the inflation source to the inflatable cylinder is provided. The flexible cylinder is located on the proximal end of a tunneling catheter, where it exits the skin. A thin tube is provided to inflate the flexible cylinder. In the event of bleeding, the flexible cylinder is inflated for as long as is needed to achieve hemostasis, without having to place sutures. Inflation is a simple procedure that can be done by the patient, as opposed to having to place a suture, which must be performed by a physician or a physician's delegate, under sterile conditions.
    Type: Application
    Filed: May 28, 2013
    Publication date: December 4, 2014
    Applicant: SMH Device Corp.
    Inventor: Shaun M. Honig
  • Patent number: 8864703
    Abstract: A drug introduction sleeve is disclosed that includes a selectively expandable body portion. The body portion is defined by a first open end and a second open end. A hollow interior is formed within the body portion. The body portion is selectively expandable from a first unexpanded configuration to a second expanded configuration whereby the volume of the hollow interior is increased when the body portion is expanded to the second expanded configuration, sufficient to temporarily retain a drug bolus.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: October 21, 2014
    Assignee: Alcon Research, Ltd.
    Inventor: Mark D. LaBelle
  • Patent number: 8814899
    Abstract: A pressure relief apparatus for a balloon dilation catheter having a shaft with a dilation balloon attached to the distal end of the shaft and an inflation/deflation lumen for inflating and deflating the balloon includes a pressure relief port formed through the wall of the inflation/deflation lumen with a pressure relief member secured across the pressure relief port to form a fluid tight seal such that the fluid tight seal formed by the pressure relief member fails at a predetermined pressure to release pressure from the inflation/deflation lumen through the pressure relief port.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: August 26, 2014
    Assignee: FutureMatrix Interventional, Inc.
    Inventor: Lanny R. Pepper
  • Patent number: 8790298
    Abstract: A system for moving particles suspended in a first fluid, and for infusing them into the stream of a second fluid, includes a catheter with a multi-lumen distal separator. The separator is formed with a plurality of parallel lumens, wherein each lumen has a predetermined diameter. Importantly, the diameter of each lumen is dimensioned to sequentially receive particles therethrough, to prevent the particles from flocculating before they enter the stream of the second fluid. A recollection chamber in fluid communication with the separator allows for reconsolidation of the fluid after leaving the separator and for minimizing the damage caused to the vessel when the fluid exits the catheter. An inflatable balloon, affixed to the outside of the catheter, can be provided to regulate flow of the second fluid and thereby facilitate entry of the particles into the stream of the second fluid and increase retention of particles in targeted tissue.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: July 29, 2014
    Assignee: Translational Biologic Infusion Catheter, LLC
    Inventor: Nabil Dib
  • Patent number: 8784602
    Abstract: Catheter balloon assemblies (10) for delivering a therapeutic agent to a body vessel are provided, as well as related methods of manufacturing and methods of treatment. The catheter balloon assemblies may include a concentrically disposed dual balloon assembly at the distal portion of the catheter having an inner balloon (44), a porous outer balloon (42) concentrically arrayed around the inner balloon and a catheter shaft (30) adapted to deliver a therapeutic agent to the body vessel through the apertures in the outer balloon. Radial outward expansion of the inner balloon may urge the outer balloon into contact with the wall of a body vessel, where the therapeutic agent may be delivered from the catheter shaft through apertures in the outer balloon directly to the wall of the body vessel.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: July 22, 2014
    Assignee: Cook Medical Technologies LLC
    Inventors: Darin G. Schaeffer, David Christian Lentz
  • Patent number: 8758294
    Abstract: One embodiment provides a method implemented by a powered inflation device to prepare a balloon catheter for use during a medical procedure. In this embodiment, the method includes drawing an amount of medical fluid from a fluid reservoir into the inflation device during a first motorized operation of the inflation device, removing an amount of air from the balloon catheter during a second motorized operation of the inflation device, and injecting the amount of medical fluid from the inflation device into the balloon catheter during a third motorized operation of the inflation device to inflate a balloon located at a distal end of the balloon catheter. The powered inflation device may be a stand-alone device in one embodiment. In one embodiment, the powered inflation device is coupled to an angiographic injector system. When it is coupled to an angiographic injector system, the balloon inflation device and the injector system may be controlled by a common control panel, or console, in one embodiment.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: June 24, 2014
    Assignee: ACIST Medical Systems, Inc.
    Inventors: Robert Kim, Jiyan Liu, Thomas McPeak, Khader Mohiuddin, Jon Moon, Richard A. Oftedahl, Norman Schwartz, Glenn Toews, Robert F. Wilson
  • Publication number: 20140121515
    Abstract: Apparatus and methods are provided for managing delivery of fluid into a vessel. A balloon catheter with a 3-way valve is introduced into an occluded vessel. The 3-way valve permits fluid, such as a contrast dye, to be injected into the vessel lumen. The valve is also configured to permit the balloon portion of the catheter to be inflated by means of the same lumen used to inject the contrast dye into the vessel. Bloodstream pressure can also be measured before and after dilation to confirm the procedure was successful. This apparatus and method provides for a quick, safe, and reliable treatment of an occluded vessel, among other things and works with known and later developed systems.
    Type: Application
    Filed: October 30, 2013
    Publication date: May 1, 2014
    Applicant: Teleflex Medical. Inc.
    Inventors: Jeffrey Vitullo, David T. Rowe, John Victor
  • Publication number: 20140114239
    Abstract: A system for moving particles suspended in a first fluid, and for infusing them into the stream of a second fluid, includes a catheter with a multi-lumen distal separator. The separator is formed with a plurality of parallel lumens, wherein each lumen has a predetermined diameter to reduce particle flocculation. An inflatable balloon, affixed to the outside of the catheter, can be provided to regulate flow of the second fluid and thereby facilitate entry of the particles into the stream of the second fluid. A reinforcing member is employed to strengthen the catheter wall under the inflatable balloon. With this arrangement, the catheter does not kink or collapse due to the pressure exerted on the catheter wall when the balloon is inflated. In one embodiment, the reinforcing member includes an annular shaped ring. In another embodiment, the separator is positioned under the balloon and acts as the reinforcing member.
    Type: Application
    Filed: December 31, 2013
    Publication date: April 24, 2014
    Applicant: Translational Biologic Infusion Catheter, LLC
    Inventors: Nabil Dib, Robert Edward Kohler
  • Patent number: 8702743
    Abstract: A medical instrument including an inflatable balloon and a plurality of filamentary tool elements with a proximal movable section that is attached to a wall of the balloon and with a distal end projecting freely from the balloon, wherein the proximal end forms a substantially cylindrical shape when the inflatable balloon is inflated and deflated and the distal end bends inwards from the substantially cylindrical shape when the balloon is deflated.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: April 22, 2014
    Assignee: Koninklijke Philips N.V.
    Inventor: Waltherus Cornelis Jozef Bierhoff
  • Patent number: 8690822
    Abstract: Medical devices for delivering a bioactive agent and methods of use thereof are provided. The device includes a balloon having micro-needles for delivery of the bioactive agent.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: April 8, 2014
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: John Papp
  • Publication number: 20140052062
    Abstract: Device for electrically isolating the pulmonary veins in atrial fibrillation for treatment thereof by means of ablation of a circumferential zone of tissue in a position where a pulmonary vein extends from an atrium, comprising: a catheter (1) having a terminal part and a distal part and comprising a first tubular element (2); a second tubular element (4) concentric with said first tubular element (2) and an axial rod-like element (6) which extends beyond the distal end of said first and second tubular elements (2; 4); a first tubular toroidal element (13) supported by a plurality of tubular arms (11) which extend from said distal end towards said toroidal element (13) forming a kind of cage which can be opened in umbrella fashion around the distal end of said catheter (1), said tubular arms (11) and said toroidal element (13) being in fluid communication with each other and with said second tubular element (4) of said catheter (1); and a second toroidal tubular element (9) in fluid communication by means of
    Type: Application
    Filed: April 12, 2012
    Publication date: February 20, 2014
    Inventors: Gian Battista Chierchia, Enrico Perfler
  • Publication number: 20140018775
    Abstract: The colorectal delivery device provides a device for rectal delivery of therapeutic compositions to the colon of a patient. The composition may be a foam application in some embodiments. The device allows medical personnel to add therapeutic drugs to the pressurized canister immediately prior to administration to the patient.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 16, 2014
    Inventors: Robert L. Swords, Roger Huckfeldt, Jesse Taylor, Martin Reuter
  • Patent number: 8617114
    Abstract: The present invention relates to balloon catheters for treating a luminal system of a patient. Specifically, the invention relates to catheters having a flexible membrane positioned at a distal portion of the catheter, the flexible membrane retained in a substantially unexposed conformation prior to deployment. Preferably the flexible membrane is capable of delivering a therapeutic agent to a localized environment when deployed to an exposed conformation.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: December 31, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Randolf von Oepen, Travis R. Yribarren, Kevin J. Ehrenreich, William E. Webler, Jr., Richard R. Newhauser
  • Patent number: 8585645
    Abstract: Methods are describe for treating intraluminal locations such as in a patient's lung. The device is a catheter which has an elongated shaft with an inner lumen, preferably defined by an inner tubular member, formed of heat resistant polymeric materials such as polyimide and high temperature vapor is directed through the inner lumen into the intraluminal location to treat tissue at and/or distal to the location. The outer surface of the catheter is also formed of heat resistant material. An enlarged or enlargeable member, such as a balloon, is provided on a distal portion of the catheter shaft to prevent proximal flow of the high temperature vapor upon discharge from the catheter.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: November 19, 2013
    Assignee: Uptake Medical Corp.
    Inventors: Robert Barry, Dean Corcoran, Brian Cran, Michael Hoey, Sheldon Lee, Peter Lyons
  • Patent number: 8574191
    Abstract: Medical devices including a substrate that are expandable from a compressed state to an expanded state; a coating on the substrate, the coating having a drug agent incorporated therein; and a sheath over the coating. The sheath is expandable from a compressed state to an expanded state and has at least one perforation therein. The medical devices are configured such that when the substrate is in a compressed state, the sheath is also in a compressed state and the perforation is substantially closed. When the substrate is in an expanded state, the sheath is also in an expanded state and the perforation is substantially open. The invention also includes a method of using the medical devices for the controlled, localized delivery of a drug agent to a target location within a mammalian body.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: November 5, 2013
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Charles D. Lennox
  • Patent number: 8568385
    Abstract: A method of treating tissue comprises introducing into a hollow organ a support device and, after insertion, arranging the support device into a non-yielding configuration substantially filling the hollow organ and substantially preventing walls of the hollow organ from moving inward in combination with inducing contraction of the hollow organ around the support device to cut off blood flow through at least a portion of the walls of the hollow organ and removing the support device after blood flow has been cut off for a predetermined time.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: October 29, 2013
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Jon T. McIntyre
  • Patent number: 8562517
    Abstract: The invention relates to a medico-technical device for at least partially introducing into a body passage. Said device comprises an elongate, tubular, flexible internal body (2), an elongate exterior enveloping body (3) which surrounds, at least partially, said internal body (2) on the periphery thereof, and a device (4) for transferring the device (1) from a flexible state to a rigid state and vice-versa. The invention is characterized in that the internal body (2), which is in the form of a double tube (5), comprises an inner tube (6) which forms an inner wall (8) of the internal body (2) and an external tube (7) which forms an external wall (9) of the internal body (2), said external tube (7) surrounding the inner tube (6) in a concentric manner on the periphery thereof.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: October 22, 2013
    Inventor: Alexander Von Weymarn-Schärli
  • Patent number: 8540668
    Abstract: A catheter having an elongate shaft including a plurality of apertures disposed along at least a length of the shaft to facilitate bending. The catheter includes an inflatable balloon, wherein a subset of the plurality of apertures provides fluid communication from an inflation lumen to the inflatable balloon.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: September 24, 2013
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Stephen Griffin, Huey Quoc Chan, Elaine Lim, Nhan Hue To
  • Patent number: 8486011
    Abstract: A balloon of a balloon catheter is inflated with a liquid inflating medium by a syringe through a flow line. Air in the flow line and the balloon is displaced into a return line. The balloon is deflated by drawing the liquid inflating medium from the balloon along with the air in the return line into the syringe where the air is trapped in the syringe. The balloon is reinflated and deflated by the syringe until the level of air in the liquid inflating medium has been reduced to a predefined level. A first non-return valve and a second non-return valve are provided in the flow and return lines, so that the liquid inflating medium is prevented from flowing from the balloon to the syringe in the flow line and from the syringe to the balloon in the return line.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: July 16, 2013
    Assignee: Flip Technologies Limited
    Inventors: John O'Dea, Eoin Bambury
  • Patent number: 8475435
    Abstract: A partial-length catheter, or an extendable tube or sleeve member of the catheter, is selectively movable within the prostatic urethra to open a urine drainage passageway through and obstructed portion of the prostatic urethra or to open the external urinary sphincter muscle and thereby discharge urine from the bladder. A control element is manipulated at a position exterior of the urinary canal to selectively move the catheter or the extendable tube or sleeve member, thereby selectively controlling urine discharge.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: July 2, 2013
    Assignee: ProstaLund AB
    Inventors: Magnus Bolmsjö, Sonny Schelin, Per Andersson, Stephan Dymling
  • Patent number: 8388573
    Abstract: A catheter configured for delivering an agent to a patient's vessel wall is described. The catheter includes an inflatable balloon substantially covered by a expandable cage such that when the inflatable balloon is inflated the expandable cage substantially surrounds an outer surface of the inflated balloon. The inflatable balloon is configured to be deployed within a lumen against a lumen wall and separated from the lumen wall by the expandable cage in an expanded state, and is adapted to provide an agent delivery to a treatment site, and the expandable cage is further collapsible and is removable from said lumen.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: March 5, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Daniel L. Cox
  • Patent number: 8366659
    Abstract: An ischemic postconditioning system and related method comprising a catheter including a plurality of lumens and at least one expandable member with at least one chamber including a moveable plunger and a return mechanism operatively engaged with the plunger. The moveable plunger divides the at least one chamber into first and second volumes. A first pressure source is provided having a first fluid at a first pressure and is disposed in fluid communication with the first volume of the chamber. Further, a second pressure source is provided having a second fluid at a second pressure and is disposed in fluid communication with the second volume of the chamber. Similarly, the at least one expandable member is disposed in fluid communication with the second volume of the chamber. The first fluid supplied by the first pressure source displaces the plunger in a first direction delivering at least a portion of the second fluid into the at least one expandable member.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: February 5, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Kevin J. Ehrenreich, Jesus Magana
  • Patent number: 8303538
    Abstract: The devices of the present disclosure are rheolytic thrombectomy catheters with a self-inflating distal balloon. A self-inflating balloon is located distal to an inflow gap or orifice and distal to a fluid jet emanator, which self-inflating balloon is inflated and expanded by the utilization of internal operating forces consisting of forwardly directed high velocity fluid jet streams and/or entrained thrombus particulate therein. The self-inflating balloon, when inflated, impinges on the wall of the blood vessel to isolate sections of the blood vessel distal and proximal to the inflated balloon in order to prevent flow of thrombus particulate, fluids and the like distal to the self-inflating balloon and to provide a stagnant nonflow region proximal to the self-inflating balloon. The devices of the present disclosure also provide for a uniform spacing of the catheter tube with respect to the thrombus and/or wall of the blood vessel.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: November 6, 2012
    Assignee: Medrad, Inc.
    Inventors: Michael J. Bonnette, Eric J. Thor, Debra M. Kozak
  • Patent number: 8246576
    Abstract: Described herein is a medical device that has a collapsed configuration and an expanded configuration wherein one or more polymeric network layers are applied to the substrate and microparticles embedded in the polymeric network. The polymeric network layer or layers is/are configured to retain the microparticles when the device is in a collapsed configuration and to release the microparticles when the device is in an expanded configuration. Methods for delivering a therapeutic agent using the device and making the device are also disclosed.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: August 21, 2012
    Assignee: SurModics, Inc.
    Inventor: Joram Slager
  • Patent number: 8192397
    Abstract: A combined fluid injection and inflation system is disclosed and includes a fluid delivery system including at least one pressurizing device, a fluid path, and a control unit. The fluid path is adapted to connect the pressurizing device to a patient via a catheter including a balloon and inserted in the patient. The control unit is operable to control the fluid delivery system. In operation, the control unit selectively actuates the fluid delivery system to operate in a fluid injection mode or in a balloon inflation mode. In the fluid injection mode the pressurizing device delivers fluid to the fluid path for a fluid injection procedure. In the balloon inflation mode, the pressurizing device delivers fluid to the fluid path for inflating the balloon associated with the catheter. An operator control may be connected to the control unit for controlling the fluid delivery system and may be a handheld device.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: June 5, 2012
    Assignee: Medrad, Inc.
    Inventors: David M. Griffiths, Rosemary Almon-Martin, Alan D. Hirschman, David M. Reilly, Frederick W. Trombley, III, Arthur E. Uber, III, William Jaecklein
  • Patent number: 8133199
    Abstract: An activation circuit for selectively providing an electrical current to one or more electroactive polymers (EAPs) in a medical device is disclosed. The activation circuit may include a sensor for sensing a measure related to a parameter of an elongated member and/or a balloon of the medical device. The electrical current may be provided to the one or more EAPs according to the sensed parameter of the elongated member and/or the balloon of the medical device. In some cases, the activation circuit may include a comparator for comparing the sensed measure to a threshold to determine when the electrical current is applied to the EAPs. The parameter may be a pressure, a fluid flow, a temperature, and/or other suitable parameter.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: March 13, 2012
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Jan Weber, Kent D. Harrison
  • Patent number: 8109904
    Abstract: Medical devices for delivering a bioactive agent(s) and methods of use thereof are provided.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: February 7, 2012
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: John E. Papp
  • Patent number: 8075521
    Abstract: A tracheo-oesophageal fistula catheter (1) comprises an elongate conduit (2) having a proximal and a distal end, the conduit (2) comprising a plurality of lumens commencing adjacent to the proximal end; means (8, 9) for substantially sealing a tracheo-oesophageal fistula, the means being attached to the conduit (2) adjacent to the proximal end and comprising two elements (8, 9) to be placed on either side of the fistula; and at least one expandable balloon (7) attached to the conduit (2) adjacent to the distal end, and in fluid connection with at least one of said lumens; wherein at least one lumen is a gastric lumen, the gastric lumen extending along the full length of the conduit and having an outlet (6) at the distal end of the conduit (2), and wherein at least one element of the means for sealing the fistula comprises an expandable balloon in fluid connection with at least one of said lumens.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: December 13, 2011
    Assignee: City Hospitals Sunderland NHS Trust
    Inventors: Peter Samuel, Christopher Hartley
  • Publication number: 20110270174
    Abstract: An ischemic postconditioning system and related method comprising a catheter including a plurality of lumens and at least one expandable member with at least one chamber including a moveable plunger and a return mechanism operatively engaged with the plunger. The moveable plunger divides the at least one chamber into first and second volumes. A first pressure source is provided having a first fluid at a first pressure and is disposed in fluid communication with the first volume of the chamber. Further, a second pressure source is provided having a second fluid at a second pressure and is disposed in fluid communication with the second volume of the chamber. Similarly, the at least one expandable member is disposed in fluid communication with the second volume of the chamber. The first fluid supplied by the first pressure source displaces the plunger in a first direction delivering at least a portion of the second fluid into the at least one expandable member.
    Type: Application
    Filed: February 23, 2011
    Publication date: November 3, 2011
    Inventors: Kevin J. Ehrenreich, Jesus Magana
  • Patent number: 8034022
    Abstract: Multiple-balloon catheters, and methods of treatment therewith, are provided including an inflatable inner balloon at least partially enclosed by an expandable outer balloon that has holes. The annular space between the inner balloon and the outer balloon is configured to promote delivery of the fluid evenly through holes in the outer balloon to avoid problems of underloading and/or overloading. Preferably, the annular space is in communication with the holes, and the annular space is configured to receive and then to release and distribute the fluid via the holes in a substantially uniform manner such that even amounts of fluid are released in the distal and proximal holes. The inner balloon may have various configurations including being tapered relative to the outer balloon. The outer balloon may also be tapered accordingly. The device may also include raised portions disposed in the annular space and configured to define channels having various configurations.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: October 11, 2011
    Assignee: Cook Medical Technologies LLC
    Inventor: Scott E. Boatman
  • Patent number: 8021330
    Abstract: A balloon catheter is disclosed including a “no-fold” balloon at a distal end thereof that surrounds a distal portion of a guidewire shaft having a compliant shaft or tubular section for selectively gripping a guidewire there within. Upon introduction of inflation fluid at low pressure values, the compliant shaft section of the guidewire shaft is radially compressed to “lock” onto the guidewire while an outer diameter of the no-fold balloon remains unchanged. The simultaneous compression of the compliant shaft section against a guidewire located within the guidewire lumen and the filling of the balloon with inflation fluid without expanding the balloon provides a clinician with a conjoined balloon catheter and guidewire ensemble that together may be pushed through a tight stenosis such as a chronic total occlusion (CTO).
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: September 20, 2011
    Assignee: Medtronic Vascular, Inc.
    Inventor: Eamonn McAndrew
  • Publication number: 20110196297
    Abstract: In a method for intermittently occluding the coronary sinus, in which the coronary sinus is occluded using an occlusion device, the fluid pressure in the occluded coronary sinus is continuously measured and stored, the fluid pressure curve is determined as a function of time, and the occlusion of the coronary sinus is triggered and/or released as a function of at least one characteristic value derived from the measured pressure values. The pressure increase and/or pressure decrease per time unit each occurring at a heart beat are used as characteristic values.
    Type: Application
    Filed: August 12, 2010
    Publication date: August 11, 2011
    Applicant: Miracor Medical Systems GmbH
    Inventor: Werner Mohl
  • Publication number: 20110160834
    Abstract: A rapid exchange catheter includes a stiff proximal tube and a relatively flexible tapered distal tube, a guide wire tube being provided in the distal tube, with an aperture for access to the guide wire lumen being provided at the junction between the distal tube and the proximal tube, the tubes being bonded together at their junction.
    Type: Application
    Filed: July 2, 2010
    Publication date: June 30, 2011
    Applicants: William Cook Europe ApS, Cook Incorporated
    Inventor: Steen Aggerholm
  • Patent number: 7967780
    Abstract: An enteral feeding unit that reduces the occurrence of gastro-esophogeal-pharynegal reflux during feeding includes an automatable feeding pump with a feedback sensor for sensing a relative pressure in a patient's stomach and esophagus, and a regulator system for controlling and monitoring feeding rate to the patient as a function of the relative gastro-esophageal pressure. The system includes a stomach probe that provides a fluid-tight closure of the esophagus. The stomach probe includes a tampon-bladder for watertight closure of the esophagus, in which the tampon-bladder is formed of flexible and/or elastic material. At least an inner cavity of the bladder is provided for the reception of a fluid medium.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: June 28, 2011
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventor: Fred G. Goebel
  • Publication number: 20110054395
    Abstract: A system for inflating a balloon (8) of a balloon catheter (4) with a liquid inflating medium which removes air during inflation of the balloon (8) comprises a vertically mounted syringe (36) containing the liquid inflating medium for inflating the balloon (8). Air in the system is displaced into a return lumen (30) and a return line (46). Air drawn into the syringe (36) with the liquid inflating medium is trapped between a piston (39) of the syringe and a top surface of the liquid inflating medium in the syringe, and thereby separated from the liquid inflating medium. Re-inflating and deflating of the balloon continues until the level of air in the balloon, the flow and return lumens and the flow and return lines (44,45) has been reduced to a predefined level. Then, an accurate determination of the inflation pressure can be read from first and second pressure sensors (50,51; 52,53) on the return and flow lines, respectively.
    Type: Application
    Filed: April 9, 2009
    Publication date: March 3, 2011
    Applicant: FLIP TECHNOLOGIES LIMITED
    Inventors: John O'Dea, Eoin Bambury
  • Patent number: 7887480
    Abstract: A balloon control apparatus includes a balloon, a flow rate adjustment section, a setting section and a control section. The balloon is attached to an insertion section of an endoscope and/or an insertion aid instrument for guiding insertion of the insertion section of the endoscope. The flow rate adjustment section adjusts an air supply flow rate to the balloon and/or an exhaust flow rate from the balloon. The setting section sets the air supply flow rate and/or the exhaust flow rate. The control section controls the flow rate adjustment section so that the air supply flow rate to the balloon and/or the exhaust flow rate from the balloon become the air supply flow rate and/or the exhaust flow rate set by the setting section.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: February 15, 2011
    Assignee: Fujinon Corporation
    Inventor: Tadashi Sekiguchi
  • Publication number: 20100331947
    Abstract: A medical device comprising a compartment capable of receiving and holding a substance in a liquid form is disclosed. The compartment is inflatable from a deflated state to an inflated state, such that when the compartment is in the deflated state, the outer wall of the membrane is substantially impermeable to the substance, and when the compartment is in the inflated state, the substance is allowed to permeate through the outer wall.
    Type: Application
    Filed: February 16, 2006
    Publication date: December 30, 2010
    Inventors: Alon Shalev, Alexander Dubson
  • Patent number: 7842027
    Abstract: A combination aspiration/irrigation and illumination device using optical fibers circumferentially disposed around the aspiration conduit for transmitting illuminating light to a cavity to be aspirated. The ends of the optical fibers being formed at an angle relative to the aspiration conduit so as to direct the illuminating light inward to provide intensified illumination ahead of the aspiration conduit.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: November 30, 2010
    Inventor: Jonas V. Lieponis
  • Patent number: 7824369
    Abstract: A system and method for inflating and deflating a catheter balloon using osmosis. An elongate catheter shaft has a proximally disposed osmotic membrane in fluid communication with a distally mounted balloon through a fluid-filled catheter lumen. The balloon is inflated by exposing the exterior of the membrane to a solution that is hypotonic relative to the solution within the catheter lumen. The balloon is deflated by exposing the exterior of the membrane to a solution that is hypertonic in relation to the solution within the catheter lumen.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: November 2, 2010
    Assignee: Medtronic Vascular, Inc.
    Inventor: Vincent J. Cangialosi
  • Patent number: 7766049
    Abstract: This is a balloon catheter having at least two lumens. One of the lumens is a large working lumen. The balloon catheter is especially useful as a guide catheter or micro catheter and may be used in a variety of therapeutic and diagnostic procedures. In particular, it has value in treating neurovascular embolic strokes in combination with other devices which are delivered to the stroke site through that working lumen. The remainder of the lumens typically are used to inflate and to deflate the balloon.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: August 3, 2010
    Assignee: Concentric Medical, Inc.
    Inventors: John Miller, Martin Dieck, Maria Aboytes, Ryan K. Pierce
  • Patent number: 7735488
    Abstract: A medical device has a cuff adapted to be positioned in the trachea of a subject with a patient tube, and a first tube having a distal end coupled to the cuff and a proximal end communicable with the surroundings. More effective and simpler sample taking and/or dosing of medicament is achieved by a second tube that is coupled with a distal end to the cuff and communicable with the surroundings via a proximal end, together with a pumping device that is connected to the proximal end of the first tube and to the proximal end of the second tube in order to circulate a fluid through the cuff. The cuff has a membrane that is permeable to a specific substance, the membrane being disposed to allow transfer of the specific substance between the interior and the exterior of the cuff.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: June 15, 2010
    Assignee: Maquet Critical Care AB
    Inventors: Lars Lindberg, Georgios Psaros, Göran Rydgren
  • Patent number: 7632242
    Abstract: A catheter having an elongate shaft including a plurality of apertures disposed along at least a length of the shaft to facilitate bending. The catheter includes an inflatable balloon, wherein a subset of the plurality of apertures provides fluid communication from an inflation lumen to the inflatable balloon.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: December 15, 2009
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Stephen Griffin, Huey Quoc Chan, Elaine Lim, Nhan Hue To
  • Publication number: 20090275889
    Abstract: An improved catheter device for selectively isolating and occluding a portion of the iliac vasculature of a patient includes an elongate hollow catheter shaft which is advanceable though the vascular system of the patient. The catheter shaft has a proximal portion that extends out from the patient and a distal portion adapted to be disposed within the iliac vasculature of the patient. A plurality of expandable members are disposed on the distal portion. One expandable member is dimensioned and configured so that when expanded it rests within the bifurcation of the descending aorta to the common iliac arteries (and/or within the bifurcation of the inferior vena cava that leads to the common iliac veins) so as to fixate the catheter within the iliac vasculature of the patient. At least two other expandable members are spaced apart from the fixation member and configured to selectively isolate and occlude blood flow through different portions of the iliac vasculature.
    Type: Application
    Filed: May 1, 2008
    Publication date: November 5, 2009
    Inventor: Sundaram Ravikumar
  • Publication number: 20090171278
    Abstract: The present invention provides a balloon catheter comprising: a hollow inner shaft disposed within a hollow outer shaft; a balloon attached at its proximal end to said outer shaft and at its distal end to said inner shaft; wherein the inner shaft is constructed such that following radial expansion of the balloon to a first expanded state, said inner shaft is capable of responding to further longitudinal expansion of the balloon to a second expanded state by increasing its length from a resting value, and of responding to subsequent partial deflation back to said first expanded state by reducing its length back to said resting value.
    Type: Application
    Filed: November 21, 2008
    Publication date: July 2, 2009
    Applicant: EndoCross Ltd.
    Inventors: Eran Hirszowicz, Eran Levit, Shay Dubi