Conduit Deforming Clamp Patents (Class 604/250)
  • Patent number: 6962488
    Abstract: A cassette having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The flow channel projects outwardly from the exterior of the cassette so that a peristaltic pump having pump head rollers mounted radially from the axis of rotation of the pump motor compress the elastomeric flow channels against the rigid substrate during operation.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: November 8, 2005
    Assignee: Alcon, Inc.
    Inventors: Sherman G. Davis, Raphael Gordon, Valentine P. Injev, Kurt D. Leukanech, Michael D. Morgan, Mel M. Oliveira, Gary P. Sorensen, Daniel J. Wilson
  • Patent number: 6942647
    Abstract: A resilient cover for a pinch clamp which fully encloses the clamp providing a smooth, snag free surface. The cover pads the clamp and softens the sharp edges of the clamp, providing an increased level of comfort for the patient using the clamp. The cover also provides an increased level of safety by reducing the likelihood of the clamp being inadvertently opened or closed. The cover closely surrounds the clamp, restricting outward movement of portions of the clamp such as the latch and tongue, reducing the chance of their being accidentally released. Internal nubs extend into the cavity holding the clamp and engage the face openings of the clamp. In addition to holding the cover in place, the nubs resist inward movement of the latch and tongue reducing the chance of the clamp being accidentally engaged. The cover is slit along one side so that it can be placed over the clamp with the clamp positioned on a tube. The slit passes through one or more of the nubs.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: September 13, 2005
    Inventor: William M. Nickels
  • Patent number: 6932796
    Abstract: Systems and methods for measuring the flow of a liquid along a conduit are disclosed. A heat source applies thermal energy to a portion of a liquid flowing along a conduit thereby elevating its temperature. An optical sensing means comprising a light source illuminating the liquid in the conduit downstream from the position of application of the thermal energy and an optical detector receiving a portion of this illumination senses the heated portion of liquid by measures a change in an optical property of the illumination caused by a change in the index of refraction of the heated portion of liquid. The time required for the heated portion of the liquid to move from the point of application of thermal energy to the point of optical sensing is measured. This measured time, along with the distance of separation of the heat source and the optical sensing means permits calculation of the velocity of the liquid in the conduit.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: August 23, 2005
    Assignee: Tearafuse, Inc.
    Inventors: Burton H. Sage, Brian E. Catanzaro
  • Patent number: 6923793
    Abstract: A clamp for a winged needle that functions simultaneously as a protector and as a clamp and that does not require a recapping operation is provided. The clamp includes a flexible curved portion 1 including a tube insertion hole 11 provided on the proximal side and an upper member 2 and a lower member 3 connected via the curved portion 1 and which can be engaged on the distal sides thereof. The clamp is adapted to pressurize the tube 44 when the upper member 2 and the lower member 3 are engaged, and to generate a clearance through which at least a wing 4 can be introduced when the upper member 2 and the lower member 3 are not engaged. The upper member 2 or the lower member 3 is provided with a space 32 in which the needle 41 and the hub 42 can be stored.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: August 2, 2005
    Assignee: Nipro Corporation
    Inventors: Masashi Ishida, Hiroyuki Nakagami
  • Patent number: 6918902
    Abstract: The in-line hand operated valve controls the flow of at least the irrigation fluid or suction to a surgical site. First and second sources provide fluid and suction to the valve. Valve body source ports communicate with the source lines and a delivery port communicates with a delivery line. The valve includes collapsible internal fluid carrying channels linking these ports. Each valve mechanism includes an operator control surface, a stem, and a compressor member acting on and closing and opening the collapsible channels. A biasing element keeps the stem and compressor either open or closed. A two position interlocking mechanical switch, coupled to the stem, is extended in the ON valve position and withdrawn in the OFF position. The method of providing a valve control utilizes these shape and click open and click close systems.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: July 19, 2005
    Assignee: ConMed Corp.
    Inventors: C. Kenneth French, Garrett L. Barker, Stephen Chakoff, Melvin E. Levinson
  • Publication number: 20040202561
    Abstract: An irrigation surgical tool system comprises a motorized handpiece, a tool for insertion in the handpiece, a console including a mounting plate and peristaltic pump rotor and a tube set including a cassette installable on the console for peristaltic pumping of irrigation liquid to the tool. Passages in the tool allow irrigation liquid flow, between a fixed outer tube and rotating inner tube of the tool, to a surgical site, through windows in the tool inner and outer tubes. Application of suction to the tool enables withdrawal through the inner tube of irrigation and surgical debris from the surgical site.
    Type: Application
    Filed: April 9, 2004
    Publication date: October 14, 2004
    Applicant: Stryker Instruments
    Inventors: David Hershberger, Chamara L. Gamhewage
  • Publication number: 20040186445
    Abstract: A catheter insertion sheath is disclosed. The sheath includes a tubular sheath having a proximal end, a distal end, and a hollow passage extending between the proximal end and the distal end. A handle portion is disposed at the proximal end of the tubular sheath. A clamp extends from the handle portion for releasably closing the sheath. The clamp is movable between an open position and a closed position, wherein, when the clamp is in the open position, fluid may flow through the hollow passage between the proximal end and the distal end and when the clamp is in the closed position, fluid flow is restricted through the hollow passage between the proximal end and the distal end.
    Type: Application
    Filed: February 18, 2004
    Publication date: September 23, 2004
    Inventors: J. Daniel Raulerson, Earl Voorhees, John Stephens
  • Publication number: 20040162544
    Abstract: A clamp for releasably clamping a catheter is disclosed. The clamp includes a body having a first portion, a second portion, and a hinge connecting the first portion and the second portion, such that the first portion is disposable to face the second portion. The first portion includes a tab extending distal from the hinge and wherein the second portion includes a locking means for releasably locking the tab to the second portion. A method of releasably clamping a plurality of catheter lumens during catheter insertion and a method of locating a catheter insertion distance based on the location of the clamp are also disclosed.
    Type: Application
    Filed: February 9, 2004
    Publication date: August 19, 2004
    Inventors: J. Daniel Raulerson, John Stephens
  • Patent number: 6770057
    Abstract: A flow control system includes a control device for intravenous (IV) tubing or other flexible or compressible tubing, wherein selectors are depressed to cause different amounts of compression of the tubing to partially flatten or squeeze the tube, and, hence, to cause different flow-rates of liquid through the tubing. The flow control system may have a housing surrounding a portion of the tube and the selectors may be moveable in the housing away from the tube to an outward position and moveable in the housing to an inward position against and pressing on the tube so that the selector compresses the tube into reduced-cross-section shape to reduce flow through the axial fluid passage of the tube. The selectors may be positioned in series along the tube, with each selector contacting a different portion of the tube.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: August 3, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Ari J. Feliciano
  • Publication number: 20040138627
    Abstract: An infusion apparatus including a support member and an elastic sleeve surrounding the support member to define a fluid reservoir therebetween. The sleeve is expandable in a radial direction when the infusion apparatus is loaded with a fluid, such as a pain medication, and exerts a pressure on the fluid so that it may be delivered to a desired site, such as a surgical region of a patient. The elastic sleeve is sealed to the support member at spaced-apart locations by first and second sealing arrangements. Each sealing arrangement preferably includes a sealing member having a first end, a second end, and a body portion extending between the first and second ends. Desirably, the body portion is substantially annular in shape and is deflectable between a first inner diameter and a second inner diameter.
    Type: Application
    Filed: January 15, 2003
    Publication date: July 15, 2004
    Inventor: Kevin M. Forrest
  • Patent number: 6749591
    Abstract: A pinch clip occluder system for infusion sets includes a housing and a clamp movably disposed within the housing to selectively occlude an infusion set. The pinch clip nests in an adapter placed on an enteral feeding pump such that when the pinch clip occluder is properly position, flow is allowed through the infusion set, but when the pinch clip occluder is not properly positioned in the adapter, flow through the infusion set is prevented.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: June 15, 2004
    Assignee: Zevex, Inc.
    Inventors: David J. McNally, Al Halbert
  • Publication number: 20040111062
    Abstract: Medical devices for retaining an end of a medical tube. Each of the devices of the present invention comprises a base and at least one tab having a portion that is moveable within the base. The base comprises an upper surface, a lower surface, at least one side cavity for receiving a tab, and an opening transverse to the upper and lower surfaces. To facilitate tube retention, the tube is inserted through the opening in the base and the tab(s) is(are) moved within the cavity(ies) such that a portion of each tab contacts and retains the tube.
    Type: Application
    Filed: November 24, 2003
    Publication date: June 10, 2004
    Inventors: Srinivas Nishtala, Linda Elbert, D. H. Perkins, Stephane Gobron, Jeffrey Smith
  • Publication number: 20040092887
    Abstract: A resilient cover for a pinch clamp which fully encloses the clamp providing a smooth, snag free surface. The cover pads the clamp and softens the sharp edges of the clamp, providing an increased level of comfort for the patient using the clamp. The cover also provides an increased level of safety by reducing the likelihood of the clamp being inadvertently opened or closed. The cover closely surrounds the clamp, restricting outward movement of portions of the clamp such as the latch and tongue, reducing the chance of their being accidentally released. Internal nubs extend into the cavity holding the clamp and engage the face openings of the clamp. In addition to holding the cover in place, the nubs resist inward movement of the latch and tongue reducing the chance of the clamp being accidentally engaged. The cover is slit along one side so that it can be placed over the clamp with the clamp positioned on a tube. The slit passes through one or more of the nubs.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 13, 2004
    Inventor: William M. Nickels
  • Publication number: 20040087911
    Abstract: A flow control system includes a control device for intravenous (IV) tubing or other flexible or compressible tubing, wherein selectors are depressed to cause different amounts of compression of the tubing to partially flatten or squeeze the tube, and, hence, to cause different flow-rates of liquid through the tubing. The flow control system may have a housing surrounding a portion of the tube and the selectors may be moveable in the housing away from the tube to an outward position and moveable in the housing to an inward position against and pressing on the tube so that the selector compresses the tube into reduced-cross-section shape to reduce flow through the axial fluid passage of the tube. The selectors may be positioned in series along the tube, with each selector contacting a different portion of the tube.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 6, 2004
    Inventor: Ari J. Feliciano
  • Patent number: 6719715
    Abstract: The invention provides apparatus for conditioning organic fluid for subsequent use in a medical procedure. The apparatus includes a cabinet having a secure environment and a door providing the only access to the environment. An input system is provided for transporting a organic fluid charge from a source to the cabinet and a container is removably contained in the secure environment and coupled to the charge input system to receive the charge. Stressors are coupled to the cabinet and positioned for operation to create a conditioned charge in the container An output system is coupled to the container and includes a receiver for the conditioned charge. The apparatus also includes a needle hub wherein a first end of the needle may be inserted intramuscularly while a second end of the needle projects beyond the patient's tissue and the second end being shielded.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: April 13, 2004
    Assignee: Vasogen Ireland Limited
    Inventors: Duncan Arthur Newman, Paul George Andrew Moore, Taras Worona, Jeffrey George Dayman
  • Patent number: 6689109
    Abstract: A positive pressure generator is provided proximal the valve or septum of a vascular catheter for inducing sufficient positive pressure in the lumen or fluid path of the catheter so that a sufficient portion of the fluid at the tip of the catheter is forced into the blood vessel after the cannula or needle has been removed from the hub so that any blood in the tip is displaced back into the vessel or is sufficiently diluted such that clotting within the lumen adjacent the tip is substantially mitigated. The positive pressure generator is preferably comprised of a flexible tube or cavity which has a variable internal volume and which is configured to have a first stable configuration with a first internal fluid volume and a second stable configuration with a smaller internal fluid volume.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: February 10, 2004
    Inventor: Lawrence A. Lynn
  • Patent number: 6682044
    Abstract: A pinch valve for pinching closed a tube which has a linear actuator connected pivotally a pointer. The linear actuator is parallel to the tube and the end of the pointer that engages the tube is made to follow a path that is perpendicular to the tube when the valve is closed. When the pinch valve is closed, the pointer is perpendicular to, and supported by, both the linear actuator and the tube.
    Type: Grant
    Filed: November 4, 2001
    Date of Patent: January 27, 2004
    Inventor: Wayne L. Miller
  • Patent number: 6676640
    Abstract: Medical devices for retaining an end of a medical tube. Each of the devices of the present invention comprises a base and at least one tab having a portion that is moveable within the base. The base comprises an upper surface, a lower surface, at least one side cavity for receiving a tab, and an opening transverse to the upper and lower surfaces. To facilitate tube retention, the tube is inserted through the opening in the base and the tab(s) is (are) moved within the cavity(ies) such that a portion of each tab contacts and retains the tube.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: January 13, 2004
    Assignee: SciMed Life Systems, Inc.
    Inventors: Srinivas Nishtala, Linda Elbert, D. H. Perkins, Stephane Gobron, Jeffrey Smith
  • Patent number: 6666853
    Abstract: A low profile adaptor for use with a medical catheter, such as a gastrostomy feeding tube. In one embodiment, the adaptor comprises a body, a clamp and a cap. The body includes a base portion and a sleeve portion, the base portion being dimensioned to engage the skin of a patient and having a transverse bore, the sleeve portion extending upwardly from the base portion and having a longitudinal slot aligned with the transverse bore and a transverse slot intersecting the longitudinal bore. The clamp, which is slidably mounted on the base portion and across the transverse slot of the sleeve, comprises a plate having a transverse opening. The transverse opening has a wide region alignable with the longitudinal bore and correspondingly dimensioned and a narrow region alignable with the longitudinal bore.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: December 23, 2003
    Assignee: SciMed Life Systems, Inc.
    Inventors: Michael S. H. Chu, Laddvanh Bouphavichith
  • Publication number: 20030225379
    Abstract: A valve for blocking the flow of gas or fluid with or without an instrument in place within the gas/fluid path. The valve includes a seal module having a proximal end and a distal end with a lumen sized to allow the passage of fluids or gases.
    Type: Application
    Filed: February 19, 2003
    Publication date: December 4, 2003
    Applicant: MedAmicus, Inc.
    Inventors: David Schaffer, Michael Schaffer, Brian Fischer
  • Patent number: 6648017
    Abstract: A valve arrangement for stopping fluid passage through at least one flexible tubing is provided with a camshaft having at least one control cam which is designed as a sink in an otherwise closed circular surface of the camshaft for moving a press member which is retracted into an inactive relative position when radially aligned with the sink and which is protruded into an active relative position by the circular surface of the camshaft for then squeezing the associated portion of the flexible tube which is passed through a housing of the valve arrangement in a direction normal with respect to a longitudinal bore rotatably supporting the camshaft and also normal with respect to a radial bore which is arranged for radially guiding the press member.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: November 18, 2003
    Assignee: Ferton Holding S.A.
    Inventors: Gustavo Lamas, Lutz Beerstecher
  • Publication number: 20030196693
    Abstract: A pneumatic circuit and other components are provided for the operation of a medical device. The pneumatic circuit provides controlled pressurized air to a medical device for use during a medical procedure.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 23, 2003
    Inventor: Jeffrey Schwindt
  • Publication number: 20030187390
    Abstract: The present invention is directed to a proximal catheter assembly that is configured to facilitate aspiration through a catheter lumen. The proximal catheter assembly enables natural aspiration to be achieved within the catheter lumen, for example, using an arterial-venous shunt, and further enables suction-assisted aspiration or infusion to be applied through the catheter lumen. This allows a physician to provide a substantially continuous level of retrograde flow within a vessel during a medical procedure without damaging the vessel wall, while providing the option of suction-assisted aspiration, when necessary, to further influence the level of aspiration within the vessel.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 2, 2003
    Inventors: Mark C. Bates, Michael Hogendijk
  • Publication number: 20030181865
    Abstract: A pump includes a housing defining a tube receiving portion and a blade mounted for reciprocating movement between first and second positions. In its first position, the leading edge of the blade compresses a length of tube against a first surface disposed in the tube-receiving portion, while in the second position, the blade does not compress the tube. The tube-receiving portion can receive the tube directly or indirectly through a tube set detachably mounted to the housing. The tube set includes a tube and a base having first and second end portions that respectively define first and second tube-receiving apertures for slidably receiving a length of the tube therethrough. The base has a first surface constructed to engage the length of tube between the apertures for compression by the pump blade.
    Type: Application
    Filed: March 21, 2002
    Publication date: September 25, 2003
    Inventors: Kent Abrahamson, Colm Clinton, Brendan Duggan, Richard Fabozzi, Damian Halloran, Philip O'Donnell, Barry Regan
  • Publication number: 20030181866
    Abstract: A pump includes a housing defining a tube receiving portion and a blade mounted for reciprocating movement between first and second positions. In its first position, the leading edge of the blade compresses a length of tube against a first surface disposed in the tube-receiving portion, while in the second position, the blade does not compress the tube. The tube-receiving portion can receive the tube directly or indirectly through a tube set detachably mounted to the housing. The tube set includes a tube and a base having first and second end portions that respectively define first and second tube-receiving apertures for slidably receiving a length of the tube therethrough. The base has a first surface constructed to engage the length of tube between the apertures for compression by the pump blade.
    Type: Application
    Filed: March 21, 2002
    Publication date: September 25, 2003
    Inventors: Kent Abrahamson, Colm D. Clinton, Brendan J. Duggan, Ricky C. Fabozzi, Damian P. Halloran, Philip A. O'Donnell, Barry J. Regan
  • Patent number: 6592558
    Abstract: A device, method and system are provided which simplify the self-administered peritoneal dialysis solution exchange procedure performed by a patient receiving continuous ambulatory peritoneal dialysis (CAPD). The device, method and system reduce the training time required for each patient provided by medical personnel in the operation of the device and performance of the exchange procedure which reduces healthcare costs. A method of instructing a patient regarding the exchange procedure is also provided which can be utilized by any patient, including those visually impaired.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: July 15, 2003
    Assignee: Baxter International Inc.
    Inventor: Eric Quah
  • Publication number: 20030114802
    Abstract: A flow regulator is connectable to an infusion tube of an IV tubing set which having a needle holder and an infusion needle. The flow regulator comprises a housing having an body, a through hole longitudinally extended through front and rear sides of the body for the passing of the infusion tube, a regulation controller installed in the housing and adapted to apply pressure to the infusion tube extended through the through hole of the housing, and a receiving barrel having an body fixedly fastened to the housing, a receiving chamber defined in the body of the receiving barrel and adapted to receive the infusion needle of the IV tubing set with which the flow regulator is used, and an opening in one end of the body of the receiving barrel through which the infusion needle of the IV tubing set is inserted into the receiving chamber.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 19, 2003
    Inventors: Chien-Wei Chung, Chin-Shu Huang, Tzu-Sheng Fan
  • Patent number: 6554806
    Abstract: A system for controlling fluid flow through multiple conduits for use in a fluid administration device. The system includes a housing, a cam, and a control element used to move the cam to selectively occlude the conduits. When used with a medical burette, the cam is located between the vent and supply conduits and rotates to alternately occlude one or the other conduits or to leave both conduits patent. Depending on the rotational position of the cam, the continuous flow mode, the intermittent flow mode, and the priming mode are all obtained with a single control lever. The housing secures the conduits in predetermined, fixed positions both above and below the contact location of the cam to the conduit. A positive locking device is included to assist in locating the cam in the desired position. Clear visual indicators are included on the housing for viewing the present flow operating state.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: April 29, 2003
    Assignee: Alaris Medical Systems, Inc.
    Inventors: Robert D. Butterfield, Emmet B. Anderson
  • Patent number: 6524304
    Abstract: An apparatus for introducing one or more branch fluid lines into IV tubing is disclosed. The apparatus including a pair of first and second fluidic blocks having a pair of contact surfaces that may be arranged to respectively engage each other in sealing contact. At least one cutting member is operatively moveable through, or connected, to the other block. In a two cutting member embodiment, a conduit extends between two cutting members and has opposite open ends in communication with an outer side of the associated cutting member. As the second block contact surface is moved towards the first block contact surface, the cutting members cut a portion of the IV tubing extending between the grooves. As cutting occurs, the cut end of the tubing sealingly engages with an associated open end of the conduit to thereby provide for uninterrupted fluid communication through the IV tubing. facilitate connection of IV extension lines by simply connecting the extension line to the conduit through the fluid port.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: February 25, 2003
    Assignee: Scan Corporation
    Inventors: Greg Picou, Daniel Daigle, Larry S. Miller
  • Publication number: 20020169423
    Abstract: A tube clamp is disclosed for optional opening and closing of tubes such as infusion tubes, an infusion pump, an infusion tube set and the combination thereof, the tube clamp comprising means for opening or closing the tube clamp which interacts with a part of the infusion pump which is a lever for locking and unlocking a door in the pump, wherein an automatic opening and closing of the tube clamp can be realized without a relative movement of the tube clamp and the tube.
    Type: Application
    Filed: April 5, 2002
    Publication date: November 14, 2002
    Applicant: FRESENIUS AG,
    Inventors: Hubert Zoltan, Gilbert Poncon, Jean-Marc Plazy, Andreas Wilmers
  • Publication number: 20020165503
    Abstract: A fluid infusion pump includes a platen between an outer door and the pumping mechanism. The platen is located so that as the outer door of the pump is moved to the closed position, it moves the platen to position the fluid flow tube into occlusive contact with the pumping mechanism before the platen engages a flow stop formed integrally with the tube and releases the flow stop to permit fluid flow, thus avoiding a free flow condition. The door also includes a handle having a sear with a hook that engages the flow stop when the door is in the closed position. As the door is opened, the hook moves the flow stop to the occluded position before the platen is moved away from the tube thus preventing a free flow condition. The platen includes a flow stop release portion that is offset from the remainder of the platen that operatively engages a release tab on the flow stop to permit movement of the flow stop to the fluid flow configuration.
    Type: Application
    Filed: May 4, 2001
    Publication date: November 7, 2002
    Inventors: Matthew G. Morris, Victor R. Hurtado
  • Publication number: 20020139419
    Abstract: Programmable methods and apparatus for providing flow control in valves. In a preferred embodiment flow control occurs by pressing opposite sides of a very flexible tube section together to selectively, and programmably, closing and opening the flow pathway. Linear or rotary cam electrically motorized members provide valve function without requiring fluid flow through the valve. Alternatively, micro-fluidic amplifiers and fluidic logic circuits can be used to sense and control fluid pressure in a pre-calculated proportional flow regulation pattern. The invention can be used in medical, hospital, clinic and home-care units for bladder cycling a patient whose urinary tracts have an indwelling catheter, utilizing a pressure transducer that opens and closes the valve in accordance with preprogrammed pressure buildup or time intervals. Other uses include a medical infusion subsystem by regulating flow of fluid from a medication reservoir into the blood or into a digestive system.
    Type: Application
    Filed: April 2, 2002
    Publication date: October 3, 2002
    Inventor: David E. Flinchbaugh
  • Publication number: 20020138062
    Abstract: A prefastened absorbent garment is manufactured with its longitudinal axis in the machine direction. A web of garment chassis material extending in the machine direction is overlaid with a side panel web laying substantially within the garment chassis borders. The side panel web is attached to the chassis web and has fasteners thereon. The side panel web can be split in two and folded to place its fasteners in proximity to complementary fasteners disposed at the opposing end of the garment on the chassis web when the chassis web is folded.
    Type: Application
    Filed: March 23, 2001
    Publication date: September 26, 2002
    Inventors: David Arthur Kuen, Robert Lee Popp, Joseph D. Coenen, Shawn A. Quereshi, Jack L. Couillard, Christopher Peter Olson
  • Patent number: 6454742
    Abstract: The present invention relates an anti-free flow valve for a fluid administration systems having a tube assembly with a lumen formed through therethrough coupled to a pump. The anti-free flow valve comprises a body including a cylindrical portion having an opening and a tapered portion which has opposing beveled surfaces with ends that form a slit bounded by side walls. The opening communicates with the slit through a passage formed through the body which is adapted to receive the tube assembly therethrough. Fluid free flow through the tube assembly is prevented by the slit being placed in the closed position when the ends of the opposing beveled surfaces are urged together when the tube assembly is in a relaxed condition. However, when a tensile force is applied along the tube assembly the inner diameter of the lumen decreases which urges the ends of the opposing beveled surfaces away from one another and places the slit in the open position, thereby permitting fluid flow through the body.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: September 24, 2002
    Assignee: Sherwood Services, AG
    Inventors: Angela M. Noecker, Glenn G. Fournie, John P. Moran
  • Publication number: 20020120236
    Abstract: A medication delivery system delivers medication to a patient and is suitable for sterilization by a sterilization fluid. The system includes a base and a reservoir disposed about the base for storing the medication. A pump for delivering the medication to the patient is supported by the base. The pump includes a housing having an inlet and an outlet. The inlet and outlet alternate between an open and a closed state to deliver the medication. A port extends from the base. The port fluidly communicates with the reservoir and the pump during sterilization to provide access for the fluid to flow into the reservoir and the pump. An actuator is disposed in the base. The actuator operatively engages the inlet and outlet to retain them in the open state during sterilization. As such, the fluid can penetrate into the reservoir, the inlet, the housing, and the outlet to sterilize the system.
    Type: Application
    Filed: February 23, 2002
    Publication date: August 29, 2002
    Inventors: Luis A. Diaz, David Hershberger, Michael Strickler, Jason Dee Toman, Donald W. Malackowski, Richard Franklin Huyser
  • Patent number: 6422057
    Abstract: A drug pump testing system and method comprise a pump control module having tube engaging members, with the pump control module coupled to a calibration cassette. The calibration cassette houses a reservoir bag comprising a fluid chamber and a collection area. The fluid chamber contains a known test volume prior to the initiation of the test cycle. The fluid chamber of the reservoir bag is coupled with a tube leading to the collection area, and the tube is positioned along the calibration cassette for occlusion by the tube engaging members of the pump control module. The reservoir bag comprises a fluid chamber and a collection area. The cassette can be a dual purpose cassette which tests sensors on the pump control module and also tests the accuracy of the pump control module.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: July 23, 2002
    Assignee: Deltec, Inc.
    Inventor: Keith B. Anderson
  • Publication number: 20020087126
    Abstract: A device, method and system are provided which simplify the self-administered peritoneal dialysis solution exchange procedure performed by a patient receiving continuous ambulatory peritoneal dialysis (CAPD). The device, method and system reduce the training time required for each patient provided by medical personnel in the operation of the device and performance of the exchange procedure which reduces healthcare costs. A method of instructing a patient regarding the exchange procedure is also provided which can be utilized by any patient, including those visually impaired.
    Type: Application
    Filed: December 28, 2000
    Publication date: July 4, 2002
    Inventor: Eric Quah
  • Patent number: 6413250
    Abstract: A cannula valve arrangement made from a suitably resilient polymeric material including a body (10) having a substantially cylindrical cavity (16) for receiving a medical apparatus hub (32, 34) and a sleeve (14) having a bore (18) for receiving a cannula (28), which is open into the body cavity. A zone (20) of the body wall which defines the cavity (16) is convexly bulged from the body (10) and is adapted to snap from its convex shape into a concave shape in the body cavity (16) when pressed over-center into the body to close the bore (18) of the sleeve (14) to the cavity until again moved outwardly from the cavity (16).
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: July 2, 2002
    Assignee: Eric Oliver MacLeod Smith Family Trust
    Inventor: Eric Julian Henry MacLeod Smith
  • Patent number: 6364853
    Abstract: The in-line hand operated valve controls the flow of at least one, and preferably both, irrigation fluid and suction respectively to and from a surgical site via a delivery line. In one working embodiment, suction fluid is supplied to the valve via a first source line and suction is supplied to the valve via a second source line. The valve body defines, source ports in fluid communication with the source lines and a delivery port in fluid communication with the delivery line. The valve body includes at least one, and preferably two, collapsible internal fluid carrying channels in fluid communication with the respective source port and the delivery port. Each valve mechanism includes an operator control surface, a stem, and a compressor member acting on and closing and opening the collapsible segment of the fluid carrying channel or body. A biasing element (such as a spring or other resilient body) keeps the valve stem and the compressor element in either an open or a closed state.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: April 2, 2002
    Assignee: Scion International, Inc.
    Inventors: C. Kenneth French, Garrett L. Barker, Stephen Chakoff, Melvin E. Levinson
  • Patent number: 6364279
    Abstract: The invention relates to a closure device for closing a hose by pinching, and in particular for closing a flexible tube or hose used in the medical field. Essentially, the device comprises a closure piece (62) provided with a circularly arcuate slot (70) which is extended by a circular orifice (76). The closure piece (62) can be rotated about a point O on a circle of radius (R) equal to the radius of the slot (70).
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: April 2, 2002
    Assignee: Debiotech S.A.
    Inventors: Frédéric Neftel, Bernard Bouvier
  • Publication number: 20010049507
    Abstract: A clamp for a winged needle that functions simultaneously as a protector and as a clamp and that does not require a recapping operation is provided. The clamp includes a flexible curved portion 1 including a tube insertion hole 11 provided on the proximal side and an upper member 2 and a lower member 3 connected via the curved portion 1 and which can be engaged on the distal sides thereof. The clamp is adapted to pressurize the tube 44 when the upper member 2 and the lower member 3 are engaged, and to generate a clearance through which at least a wing 4 can be introduced when the upper member 2 and the lower member 3 are not engaged. The upper member 2 or the lower member 3 is provided with a space 32 in which the needle 41 and the hub 42 can be stored.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 6, 2001
    Inventors: Masashi Ishida, Hiroyuki Nakagami
  • Publication number: 20010039403
    Abstract: A positive pressure generator is provided proximal the valve or septum of a vascular catheter for inducing sufficient positive pressure in the lumen or fluid path of the catheter so that a sufficient portion of the fluid at the tip of the catheter is forced into the blood vessel after the cannula or needle has been removed from the hub so that any blood in the tip is displaced back into the vessel or is sufficiently diluted such that clotting within the lumen adjacent the tip is substantially mitigated. The positive pressure generator is preferably comprised of a flexible tube or cavity which has a variable internal volume and which is configured to have a first stable configuration with a first internal fluid volume and a second stable configuration with a smaller internal fluid volume.
    Type: Application
    Filed: May 2, 2001
    Publication date: November 8, 2001
    Inventor: Lawrence A. Lynn
  • Patent number: 6287281
    Abstract: Medical devices for retaining an end of a medical tube. Each of the devices of the present invention comprises a base and at least one tab having a portion that is moveable within the base. The base comprises an upper surface, a lower surface, at least one side cavity for receiving a tab, and an opening transverse to the upper and lower surfaces. To facilitate tube retention, the tube is inserted through the opening in the base and the tab(s) is(are) moved within the cavity(ies) such that a portion of each tab contacts and retains the tube.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: September 11, 2001
    Assignee: Scimed Life Systems, Inc.
    Inventors: Srinivas Nishtala, Linda Elbert, D. H. Perkins, Stephane Gobron, Jeffrey Smith
  • Patent number: 6261269
    Abstract: The invention relates to devices for draining biological fluids. A first device comprises a housing (2) and a pinch valve (3) mounted in the housing, away from the walls of the latter. The housing includes an opening (11) arranged opposite the pinching means (6) of the valve. Another device (13) comprises a catheter section (7) of a drainage line and a member (12) for supporting the catheter, the catheter section passing into and emerging from the support member (12) at two points and forming a loop between these two points.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: July 17, 2001
    Assignee: NMT Neurosciences Implants S.A.
    Inventor: Alain Lecuyer
  • Patent number: 6168577
    Abstract: A directed stream blower is provided for removing materials from a surgical site, thus improving the visibility of the surgical site. Preferably, the directed stream blower provides a directed stream of pressurized gas combined and intermixed with a sterile fluid which may be used to clear or wash away blood, debris, particulate, or other materials from the target surgical site. The directed stream blower may be provided with flow control positioned directly on the handle for convenient one-handed operation during use.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: January 2, 2001
    Assignee: Cardiothoracic Systems, Inc.
    Inventors: James W. Niederjohn, Harry L. Green, II, Eugene E. Reis
  • Patent number: 6165151
    Abstract: Apparatus and methods for controlling the administration of intravenous drugs for sedation of a patient. Safe and controlled levels of sedation are provided by the use of a system for continous monitoring of patient pulse oximetry levels during the sedative's adminstration. Adequate levels of sedation that are clinically desirable are accomplished by the device, safely and smoothly, without the risk of respiratory depression. Preestablished oximetry ranges are provided before and/or during administration of the analgesic as the maximum and minimum acceptable saturation levels. Levels of sedation are continuously adjusted in response to increases or drops in oxygen saturation to smoothly maintain the saturation levels within the preestablished parameters.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: December 26, 2000
    Inventor: Daniel L. Weiner
  • Patent number: 6162201
    Abstract: A urinary catheter includes a cannula having a urine passage, a urine inlet and a urine outlet; and a valve positioned in said urine passage between said inlet and said outlet and having a valve passage having at least a portion which is moveably positioned between a substantially blocked positioned and a flow position, and structure for moving said portion, said structure for moving being biased toward a blocking position wherein said portion is in said substantially blocked position and flow through said valve means is substantially blocked, and said structure for moving being moveable to a position at least partially moving said portion toward said flow position wherein flow through said valve means is allowed.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: December 19, 2000
    Inventors: Kenneth L. Cohen, Dennis Hanlon
  • Patent number: 6129702
    Abstract: A medicament dosing system comprises a replaceable unit and a permanent unit. The replaceable unit comprises a fluid reservoir for receiving therein a pressurizable liquid medicament, a temperature sensor for detecting the temperature of said liquid medicament, a fluid channel which is provided with a flow resistor and which is in flow communication with the fluid reservoir, and a hose means which is connected to the fluid channel. The permanent unit comprises a squeezing valve means for squeezing the hose means together, and a control means which is coupled to the temperature sensor and the squeezing valve means so as to control a flow rate of the liquid medicament by clocked actuation of said squeezing valve means depending on the temperature detected. Alternatively, the temperatur sensor can be arranged in the permanent unit.
    Type: Grant
    Filed: June 6, 1999
    Date of Patent: October 10, 2000
    Assignee: Fraunhofer-Gesellschaft zur Forderung angewandten Forschung e.V.
    Inventors: Peter Woias, Martin Richter
  • Patent number: 6120475
    Abstract: An infusion bottle monitor device has an electric circuit module, a sensing module, and a wire connected to the electric circuit module and the sensing module. The electric circuit module has a microprocessing system. The sensing module has a sensing system to output a sensing signal into the microprocessing system. A micromotion control system is disposed in the electric circuit module. A hose is connected to a hollow tube. The hollow tube is connected to an infusion bottle. The sensing module is disposed on the hollow tube. A plurality of clamp devices are disposed on a lateral of the electric circuit module. An opening is formed on the lateral of the electric circuit module. A support frame is disposed on the lateral of the electric circuit module pivotally.
    Type: Grant
    Filed: February 16, 1998
    Date of Patent: September 19, 2000
    Inventor: San-Ming Chen
  • Patent number: 6117115
    Abstract: A medical tubing and slide clamp set is disclosed for use with a medical infusion pump designed for operation with a preselected medical tubing set having predetermined size and functional characteristics. The medical tubing and slide clamp includes a preselected medical tubing set having predetermined size and function characteristics. An opaque slide clamp is provided with a grasping end and a longitudinal clamp plate extending from the grasping end. The longitudinal clamp plate defines a clamp slot with a wide open portion sized for receiving the preselected medical tubing without closing the tubing, a narrow open portion sized for closing the tubing and a transition portion interconnecting the narrow and wide portions. A plurality of orifices are formed along the longitudinal clamp plate at predetermined locations arranged according to the size and functional characteristics of the medical tubing set.
    Type: Grant
    Filed: October 12, 1998
    Date of Patent: September 12, 2000
    Assignee: B. Braun Medical, Inc.
    Inventors: Roger J. Hill, James H. Monti, Jr., David J. Harrison