Conduit Deforming Clamp Patents (Class 604/250)
  • Patent number: 6117103
    Abstract: A multi-drug intravenous infusion apparatus which comprises a plurality of vials containing drugs to be provided to a patient; a fluid container containing fluid to be mixed with the drugs; conduit mechanism for leading drugs from the vials, mixed with the fluid from the container, to mechanism for introducing the drugs with the fluid into the patient's body, the conduit mechanism comprising: a main section, a plurality of individual sections, each comprising at least a collapsible portion, connected to the vials and to the main sections, a terminal section connected to the main section and the mechanism for introducing the drugs with the fluid into the patient's body, and a fluid section leading fluid from the fluid container to the terminal section; a switching unit comprising a plurality of switches, each one associated with one of the individual sections, wherein each switch is capable of either blocking the drug flow in the associated section by exerting pressure whereby to collapse the collapsible porti
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: September 12, 2000
    Assignee: Medun Ltd.
    Inventors: Grigory N. Tverskoy, Leonid Lipetsker, Evgeny Voronov, Roman Struzer
  • Patent number: 6113555
    Abstract: A device having a protection cap defining a concavity, and a thin sharp-ended tubular stem joined to the cap and projecting into the concavity; the tubular stem being connected to elements for penetration into the human body or into body liquid containers; the device being also suitable for use in combination with sample tubes to be inserted into the concavity in the cap and having their interior chamber under vacuum and closed by a yieldable elastomeric plug able to seal an aperture produced by the tubular stem; the tubular stem being joined at one end to the interior concavity of the cap and constructed of a synthetic resinous material in one piece with the cap.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: September 5, 2000
    Assignee: C.G.M. S.p.A.
    Inventor: Corrado Saverio Parmigiani
  • Patent number: 5964738
    Abstract: An infusion set (10,12) comprises a first part (10) housing a pump and control means and a second part (12) housing a replaceable infusate reservoir (14) with an integral infusion line (16). An anti-freeflow sliding member (26) has an opening (28) through which the infusion line (16) passes, and is slidable between a first open position and a second closed position by detaching the parts.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: October 12, 1999
    Assignee: Sims Graseby Limited
    Inventors: David G. Hilborne, Roger O'Brien
  • Patent number: 5925023
    Abstract: A multi stage type flow rate switching device is provided which simplifies switching of flow paths and which rarely causes erroneous operation. The multi stage type flow rate switching device includes a liquid medicine flow inlet port 1 having branch paths 11, 12 and 13 on a downstream side, a liquid medicine flow outlet port 2 having branch paths 21, 22 and 23 on an upstream side and constant flow rate paths 31, 32 and 33 for connecting respective branch paths, and arranged in a housing 4 comprising a lid 41 and a housing main body 42. In the housing 4, there is provided clamping means 5 capable of selectively blocking the constant flow rate paths 31, 32 and 33.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: July 20, 1999
    Assignee: Nissho Corporation
    Inventor: Katsuhiro Hiejima
  • Patent number: 5916196
    Abstract: The balloon catheter has a portion of its tubular shaft sequentially squeezed between a ram reciprocating in a box and a saddle arranged in a cover closely fitting on the box. The pressurized fluid medium supplied to the balloon is pulsated by the squeeze and release action of the ram and saddle arrangement.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: June 29, 1999
    Assignee: Schneider (Europe) AG
    Inventors: Martin Andrea, John Perrins
  • Patent number: 5895376
    Abstract: A hemostasis valve including a collapsible membrane in a portion of a through-lumen. Fluid pressure in a chamber surrounding the collapsible membrane assists in sealing the collapsible membrane around an operating device inserted through the hemostasis valve. Different mechanisms for mechanically deforming the collapsible membrane to assist in sealing are disclosed. Also, a system for continuously flushing a vascular catheter connected to a hemostasis valve at a rate of 0.10 to 10.0 cubic centimeters per minute, and a hemostasis valve assembly including an expandable reservoir which stores liquid volume under pressure.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: April 20, 1999
    Assignee: Mayo Foundation for Medical Education and Research
    Inventors: Robert S. Schwartz, David R. Holmes, David Berry, Donald G. Ellis
  • Patent number: 5865813
    Abstract: An IV tube occluder is disclosed which has a bow portion and a linkage portion which act to occlude an IV tube to prevent unwanted flow of liquid to a patient. The linkage portion and bow portion are engaged to allow the ends of the linkage portion to rotate within a certain range. The linkage portion has an extending pinching member which is used to occlude a portion of flexible tubing by pressing the tube against the bow portion. The pinching member of the linkage portion moves against the bow portion through the provision of a hinge portion of the linkage portion, which allows the pinching member to hold the tube in an open or closed position. In an alternative embodiment, both the bow portion and linkage portion are formed as a continuous body.
    Type: Grant
    Filed: July 14, 1995
    Date of Patent: February 2, 1999
    Assignee: Alaris Medical Systems, Inc.
    Inventors: Shawn DeKalb, Gary Bell, Robert M. Cunningham
  • Patent number: 5865797
    Abstract: A fluid deliver system including a pair of bags having an opening formed in a bottom edge thereof. The bags include a first bag for containing a first liquid and a second bag for containing a second liquid. Further provided is a pair of elongated lumens each with a top open end and a bottom open end. Each top open end of the lumens is connected in communication with the openings of a corresponding bag. The bottom ends are in communication with each other to form an exit conduit and communicable with a dispensable apparatus for inserting into an arm of a patient. Finally, a drip control means is provided with a roller for manually controlling the amount of the first fluid and second fluid which exits the lumens and enters a patient.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: February 2, 1999
    Inventor: Mary L. Zeeman
  • Patent number: 5853398
    Abstract: A flow adjusting tube clamp is used with a chamber in a solution administration device. The tube clamp is pivotally mounted to the cap at a second pivot element. The tube clamp includes first and second elongated tube passages that overly the cap inlet ports as the clamp is pivoted. The tube passages define varying cross-sectional open areas therethrough. The passages are arcuate so that they continuously overly the inlet ports as the clamp is pivoted. The inlet ports are configured to receive flexible tube portions that traverse through the tube passages in the clamp. Each tube passage includes at least one open area and at least one occluding portion to establish and terminate flow therethrough. The clamp is pivotable from a prime position to an intermittent flow position and from an intermittent flow position to a continuous flow position, to effect varying flow conditions.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: December 29, 1998
    Assignee: Baxter International Inc.
    Inventors: Birendra K. Lal, Lewis E. Daniels, Jr.
  • Patent number: 5827238
    Abstract: A connector/clamp assembly for a transfer set includes an inlet connector with a base, a shank extending from one end of the base and an I.V. tube extending from the opposite end of the base. The base interfits with a housing having opposite ends, a bottom wall and a pair of side walls extending from the bottom wall, so that the shank extends from one end of the housing and the tube extends along the bottom wall to the opposite end of the housing. A clamp is present in the housing opposite the tube and which is movable within the housing between a first position wherein the clamp collapses the tube against the housing bottom wall thereby blocking the tube lumen and a second position wherein the clamp does not collapse the tube sufficiently to appreciably occlude the lumen.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: October 27, 1998
    Assignee: Microwave Medical Systems, Inc.
    Inventor: Richard Kelley
  • Patent number: 5785694
    Abstract: A urinary catheter includes a cannula having a urine passage, a urine inlet and a urine outlet and a valve positioned in the urine passage between the inlet and the outlet and including a compressible tube, and a member for releasably compressing the tube, the member for releasably compressing being biased toward a compressing position wherein the tube is compressed and flow through the tube is substantially blocked, and the member for releasably compressing being positionable to a released position at least partially releasing compression of the tube wherein flow through the tube is allowed.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: July 28, 1998
    Inventors: Kenneth L. Cohen, Dennis J. Hanlon
  • Patent number: 5772688
    Abstract: A skin-contact type medical treatment apparatus is provided which includes: a first conductive member having a first skin-contact surface in contact with a first surface of skin when in use, the first skin-contact surface being made of metal or its alloy; and a second conductive member having a second skin-contact surface in contact with a second surface of skin different from the first surface when in use together with the first conductive member, the second skin-contact surface being made of n-type semiconductor material having a standard single electrode potential lower than that of the first skin-contact surface. The first and second conductive members are electrically connected by a protective resistor at an area different from the first and second skin-contact surfaces, the protective resistor having a resistance value in the range of from 0.1 to 50 M.OMEGA..
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: June 30, 1998
    Assignee: Polytronics, Ltd.
    Inventor: Masahisa Muroki
  • Patent number: 5749859
    Abstract: A catheter or cannula (2) which includes a press or pinch point (18) which may be resiliently deformed to prevent flow of blood or other body fluids during insertion of the catheter or cannula tube (10) or it may be part of the boss (11) of the catheter or cannula (2). One or more protrusions or buttons (20) may be integrally moulded to the press or pinch point (18) to assist with the application of pressure to the press or pinch point (18) to prevent fluid flow. Wings (14) extending from the sides of the cannula or catheter (2) may provide support and be hinged to enable compression of the press or pinch point (18). The cathether or cannula tube (10) is of a size to fit over a hypodermic needle (5) of a trocar (1) inserted into the catheter or cannula (2).
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: May 12, 1998
    Assignee: Parashar Holdings Pty Ltd
    Inventor: Andrew Robert Powell
  • Patent number: 5728115
    Abstract: A renal perfusion clamp which is capable of opening to 180 degrees. The perfusion damp of the present invention additionally allows for interchange of variously sized clamp heads in order to accommodate aortic cuffs of various sizes. The perfusion clamp provides for adjustable clamping force which is controllable by the perfusionist.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: March 17, 1998
    Assignee: Indiana University Foundation
    Inventors: Roy A. Westcott, Richard Putz
  • Patent number: 5722958
    Abstract: A valve assembly adapted for introduction of surgical instruments into a patient's body includes a valve body formed of a flexibly resilient material which defines an aperture for reception of the instrument. The aperture is configured and dimensioned such that insertion of the instrument into the aperture will cause the resilient material of the valve body to resiliently engage the outer surface of the instrument in a substantially gas tight manner. The valve assembly includes a biasing member for closing the valve body to form a gas tight seal prior to inserting the instrument therethrough.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: March 3, 1998
    Assignee: United States Surgical Corporation
    Inventors: Roy D. Gravener, Alex Ianniruberto, Michael Ciccolella
  • Patent number: 5643247
    Abstract: A diode device (10) containing a microparticle polymer element (12) is described. Also described are mechanical switching devices that employ the microparticle polymer element.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: July 1, 1997
    Assignee: Mayo Foundation for Medical Education and Research
    Inventors: Julio M. Fernandez, Chaya Nanavati
  • Patent number: 5624395
    Abstract: An indwelling urinary catheter having a palpitatable multiaxial dome-type valve and an inflatable anchoring balloon. The valve has a peripheral trough to maximize drainage. The catheter body and balloon are integrally molded from silicone to produce a uniform and symmetrical balloon shape. The balloon shape may be selectively altered by varying bonding patterns or wall thicknesses. Valve openings traverse an arcuate pathway, and adjacent valve elements are separated by an intermediate rib to ensure a reliable closure. Valve elements are readily displaced by a drainage tube connector that engages the valve body. A collar on the catheter body moves axially along helical threads to adjust tension on the balloon.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: April 29, 1997
    Assignee: CV Dynamics, Inc.
    Inventors: Adel A. Mikhail, Gene E. Stobbs, Adel M. Hashw, Shelley N. Johnson
  • Patent number: 5611458
    Abstract: A method and apparatus are provided for controlling the dispensing of a primary liquid from a pressurized source of primary liquid. Primary liquid is admitted through an inlet valve to a primary chamber having a primary element which is biased toward an initial position but is movable away from the initial position when subjected to the source pressure of the primary liquid. A sensor determines when the primary element has moved away from an initial position to a predetermined final position, and the inlet valve is closed in response thereto. The difference between the initial and final positions defines a predetermined dispensing volume. An outlet valve is opened to dispense the dispensing volume under the biasing force of the primary element which returns to the initial position. A sensor determines when the primary element has returned to the initial position, and the outlet valve is closed in response thereto.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: March 18, 1997
    Assignee: Abbott Laboratories
    Inventors: John E. Ogden, Kent D. Abrahamson, Peter L. Bryant, Thomas P. Joyce, John S. Ziegler
  • Patent number: 5593392
    Abstract: A flow regulator device for intravenous tubing comprises a frame body, a notch on the frame body for attaching an intravenous tube to the frame body, and a first pressure applicator disposed on the frame body and engageable with the intravenous tube for alternately compressing and releasing the intravenous tube in a first direction of action in a first plane. A second pressure applicator is provided on the frame body for alternately compressing and releasing the intravenous tube in a second direction of action in a second plane. The second pressure applicator is disposed on the frame body in spaced relation to the first pressure applicator along a flow path of the intravenous tube and is engageable with the intravenous tube.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: January 14, 1997
    Inventor: Jovanka Starchevich
  • Patent number: 5567120
    Abstract: A holder for an IV tube roller clamp is removably secured in the housing of an electronic infusion device, and has in opposite ends thereof a pair of photo-electric devices, one of which detects when the roller of the clamp is in its tube opening position, and the other detects when the roller is in tube closing position. A lever is pivotal on the housing between a closed position in which it operatively connects the IV tube to a pump unit in the housing, and an open position in which it permits removal of the IV tube from the unit. The spring-loaded armature of a solenoid prevents the lever from being opened until the solenoid coil is energized, and the photo-electric devices prevent the solenoid coil from being energized until the roller is in its tube closing position. When closed, the lever overlies part of the tube channel in which the IV tube is seated and also shifts a pressure plate in the pump unit to a position in which a lip thereon overlies another portion of said channel.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: October 22, 1996
    Assignee: Sigma International
    Inventors: Roger L. Hungerford, Christopher D. Cimerman, Paul J. Hufnagel, Robert J. Pieroni
  • Patent number: 5549657
    Abstract: A low profile adaptor is disclosed for use with a gastrostomy feeding tube which has been inserted by means of conventional endoscopic procedures or with a replacement feeding tube inserted through the patient's stomach. The tube is cut to the approximate length by the surgeon. The adaptor comprises an anti-reflux valve assembly having a stem which can be plugged into the open end of the feeding tube. The valve assembly contains a seal which functions as a one-way valve to prevent reflux of gastric contents but which permits the introduction of feeding solution into the feeding tube. A clamp is placed around the feeding tube and the valve stem and locked into place to secure the valve assembly to the feeding tube at a location flush with the patient's skin. A silicone cover is placed around the clamp to protect the patient from skin irritation caused by the clamp, and also to protect the clamp and valve assembly from contamination.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: August 27, 1996
    Assignee: C.R. Bard, Inc.
    Inventors: David R. Stern, Michael Gauderer, Albert N. Solbjor
  • Patent number: 5542931
    Abstract: A valve assembly adapted for introduction of surgical instruments into a patient's body includes a valve body formed of a flexibly resilient material which defines an aperture for reception of the instrument. The aperture is configured and dimensioned such that insertion of the instrument into the aperture will cause the resilient material of the valve body to resiliently engage the outer surface of the instrument in a substantially gas tight manner. The valve assembly includes a biasing member for closing the valve body to form a gas tight seal prior to inserting the instrument therethrough.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: August 6, 1996
    Assignee: United States Surgical Corporation
    Inventors: Roy D. Gravener, Alex Ianniruberto, Michael Ciccolella
  • Patent number: 5522806
    Abstract: A self-closing catheter valve having a housing with an oval cross section and a conical hose attachment connector which can be inserted into a catheter hose. A valve hose piece partially extends through the housing. A V-shaped spring element deforms and constricts the valve hose piece by pressing the valve hose piece against a wall of the housing. An actuation member is positioned within the housing for bringing the self-closing catheter valve into an open position.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: June 4, 1996
    Inventors: Peter Schonbachler, Peter Huser, Thomas Huser, Othmar Horat
  • Patent number: 5514114
    Abstract: An intravascular puncturing nozzle with an automatic no blood reflux mechanism. The mechanism includes a part (3) resiliently biased towards a position closing the passage (6) of the plastic nozzle (2), which position is automatically reached when the needle (4) puncturing the blood vessel is removed from such passage. The connector (5) on the serum equipment automatically opens the passage (6) when the said equipment is connected. The mechanism is applicable to intravascular puncturing nozzles to prevent the patient's blood from refluxing and coming into contact with the operator, thereby avoiding contagion, and in order not to put the sterility of the material used at stake.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: May 7, 1996
    Inventors: Marcos Soto-Tolosa, Pere Arques-Teixidor
  • Patent number: 5464388
    Abstract: A cardioplegia administration system includes a tubing set, a positive displacement pump and a mixing system. The tubing set has a cardioplegia supply tube; a blood supply tube; and a cardioplegia administration tube connected to the cardioplegia and blood supply tubes. The positive displacement pump engages the cardioplegia administration tube to pump fluid therethrough. The mixing system includes pinch valves for alternately-continually pinching the cardioplegia and blood supply tubes to close and open the cardioplegia and blood supply tubes such that only one of the cardioplegia and blood supply tubes is open at a time, and a controller that controls the intervals during which the pinch valves are open to control the ratio of the cardioplegia medication and blood or blood substitute administered through the cardioplegia administration tube.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: November 7, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kenneth E. Merte, William G. O'Neill
  • Patent number: 5458581
    Abstract: A catheter device of the type having a plastic sleeve with a central bore and a flexible catheter tube projecting from one end of the sleeve is equipped with a crimping apparatus, to allow a person administering the catheter to selectively crimp the tube to inhibit the flow of blood therethrough. The crimping apparatus includes member mounted for rotational movement with respect to the sleeve and a torsion spring, which normally biases the eccentric member to a "non-crimping" position. The member includes a bottom slot for receiving the catheter tube. When it is desired to crimp the tube, the member is rotated in a predetermined direction, such that the member compresses the catheter tube to inhibit the flow of blood therethrough. By crimping the catheter tube to inhibit the flow of blood therethrough, the likelihood of direct contact between the person administering the catheter and the catheter recipient's blood is substantially diminished.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: October 17, 1995
    Inventor: Michael C. Hull
  • Patent number: 5453098
    Abstract: A device for holding an IV tube in a pumping apparatus and for selectively occluding the tube when the door of the pumping apparatus is opened, to prevent free flow of fluid in the tube. The device consists of a base member to which the IV tube is attached or through which it passes, and a slide clamp which slides relative to the base member and relative to the tube. The IV tube is passed through an elongated aperture in the slide clamp, and the slide clamp is slidingly mounted on the base member. The aperture in the slide clamp has a relatively open hole at one end, through which the tube passes when the slide clamp is in one position, allowing fluid to flow through the tube. The aperture also has a relatively constricted slot at the other end, through which the tube passes when the slide clamp is in a second position, preventing fluid flow through the tube.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: September 26, 1995
    Assignee: Imed Corporation
    Inventors: Charles R. Botts, Robert B. Cushman, Ahmad-Maher M. Moubayed, John Thompson
  • Patent number: 5445613
    Abstract: A clamping device for obstructing the flow of fluid through a tube is disclosed which may be electrically or manually actuated in response to an electrical signal from a condition detection means associated with the tube. The clamping device may also be actuated to compress the tube gradually, providing incrementally decreasing flow through the tube.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: August 29, 1995
    Assignee: Rocky Mountain Research, Inc.
    Inventor: Jeffrey L. Orth
  • Patent number: 5437635
    Abstract: A flow limiter mechanism for use with an infusion pump of the type operating upon a disposable cassette held by the infusion pump and having a flow tube connected to the cassette. The flow limiter includes a receiving channel located on the infusion pump adjacent to the disposable cassette held by the infusion pump. A tube pincher is operatively associated with the receiving channel to pinch the flow tube in a clamped position and mechanically retractable to an unclamped position to allow the flow tube to open. Electrical controls are connected for selectably operating the tube pincher from the clamped closed position to the unclamped opened position while the disposable cassette is held by the infusion pump. A flow clip is attached to the flow tube and is manually operable between opened and closed clipping positions prior to inserting the disposable cassette into the infusion pump.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: August 1, 1995
    Assignee: McGaw, Inc.
    Inventors: Antony Fields, Terry Branson, David J. Harrison, Dana J. Owens, Aaron T. Raines, Edward G. Rasmussen
  • Patent number: 5437642
    Abstract: A free flow prevention system for preventing undesired free flow of fluid through IV tubing of the type used in an infusion pump. The system comprises a spring clip having a base and a spring arm defining a channel adapted to receive the IV tubing. The spring arm is resiliently biased to a closed position in which the IV tubing is squeezed by the spring clip to close the lumen to prevent fluid flow, and the spring arm is movable against the bias to an open position wherein the lumen of the IV tubing is allowed to open to allow flow. The system also includes a clip-opening pin in the infusion pump for moving the spring arm of the clip from its closed position to the open position.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: August 1, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gary A. Thill, Mark A. Toycen, Kent R. Struble, Timothy G. Curran
  • Patent number: 5429616
    Abstract: A catheter apparatus for insertion into a blood vessel includes a tubular catheter hub, having a side wall with a side wall portion formed of deformable material, and having a proximal end, a distal end, and a mechanism for inwardly collapsing the side wall portion to occlude the apparatus, resilient sealing material contained within the catheter hub having an axially oriented opening to permit fluid communication between the proximal end and the distal end of the catheter hub, for compressing to form a seal, closing the axially oriented opening and creating a seal, and a catheter extending from the distal end, substantially coaxially with the hub. A clamping mechanism is preferably provided for inwardly collapsing the side wall portion. The clamping mechanism preferably includes two spaced apart compression flanges extending outwardly from the side wall portion for gripping and pushing toward each other to compress the sealing material and occlude the apparatus.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: July 4, 1995
    Inventor: David I. Schaffer
  • Patent number: 5425173
    Abstract: A method for resupplying a remote cassette assembly (14) for an ambulatory medical infusion pump (10) with a new replacement tube (22a) includes the steps of disassembling a used tube assembly (22) from the cassette assembly (14) by removing a luer lock (34) located at the end of microbore tubing (32) by severing the tubing (22), removing the tubing (22) by passing it through apertures (30), (25) and (47) in the cassette assembly (14), inserting a new unused tubing (22a) into the access slot (40) to the interior of said cassette, and by inserting tubing (22a) such that the tubing (22a) is pulled through the apertures (47), (25) and (30).
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: June 20, 1995
    Assignee: Fredrick Kamienny
    Inventors: Richard Moss, Fredrick L. Erlich
  • Patent number: 5423769
    Abstract: A cardioplegia management system comprises an inlet tube adapted for connection to a source of cardioplegic fluid, and at least two supply tubes extending from the inlet tube and in communication therewith, whereby fluid passing through the inlet will be directed to the supply tubes. The system also includes a base, and clamps associated with the supply tubes. Each of the clamps is mounted on the base in a position to selectively clamp and unclamp its respective supply tube, thereby selectively blocking or allowing flow of fluid through the supply tubes.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: June 13, 1995
    Assignee: DLP, Inc.
    Inventors: Kenneth R. Jonkman, James H. DeVries
  • Patent number: 5423749
    Abstract: A cardioplegia administration system includes a tubing set, a positive displacement pump and a mixing system. The tubing set has a cardioplegia supply tube; a blood supply tube; and a cardioplegia administration tube connected to the cardioplegia and blood supply tubes. The positive displacement pump engages the cardioplegia administration tube to pump fluid therethrough. The mixing system includes pinch valves for alternately-continually pinching the cardioplegia and blood supply tubes to close and open the cardioplegia and blood supply tubes such that only one of the cardioplegia and blood supply tubes is open at a time, and a controller that controls the intervals during which the pinch valves are open to control the ratio of the cardioplegia medication and blood or blood substitute administered through the cardioplegia administration tube.
    Type: Grant
    Filed: November 18, 1993
    Date of Patent: June 13, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kenneth E. Merte, William G. O'Neill
  • Patent number: 5413566
    Abstract: A clamp for occluding a flexible tube comprising a permanent magnet rotary actuator coupled to a rotatable cam. A spring-biasing mechanism is provided to counteract the rotation of the rotary actuator and to return the rotatable cam to a pre-determined position when power is withheld from the rotary actuator.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: May 9, 1995
    Assignee: Micropump Corporation
    Inventors: Christophe J. P. Sevrain, Carl D. Beckett
  • Patent number: 5405319
    Abstract: A portable, lightweight bowel evacuation system is made up of a water bag which is elevated above the patient with a check valve in the delivery line from the water bag into a rectal insertion tube or speculum, a drain line leading from the speculum includes a disposable valve member for selectively opening and closing the drain line, and one or more pressurizing members in the form of manual squeeze bulbs are provided to simultaneously open the check valve for delivery of water from the water bag through the speculum and close the drain valve while the check valve is open and further is open to simultaneously close the check valve when the drain is opened. In a modified form, a flow control valve in communication with a source of air under pressure takes the place of the manual squeeze bulb to control opening and closing of the valve members.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: April 11, 1995
    Inventors: Roy Abell, Thomas Shilling
  • Patent number: 5402776
    Abstract: An endotracheal tube holder that includes a face plate assembly which is attached to a patient's head by an adjustable headband. The face plate assembly is formed with a face plate adapted to be positioned over the mouth of the patient and is formed with an open end channel terminating with a V-shaped notch over which is superposed a tube holding block that is affixed to the outer surface of the face plate, and also includes a matching V-shaped notch in which an endotracheal tube can be fixedly positioned by a thumb screw, a bite block being integrally secured to the inner surface of the face plate which is also provided with an aligned V-shaped notch. The face plate also includes an opening for ready access to the patient's mouth, as might be required.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: April 4, 1995
    Inventor: Steven T. Islava
  • Patent number: 5401256
    Abstract: A flexible clamp for IV tubing, and in particular for use in a free flow prevention system. The flexible clamp has a pair of generally elongate clamping arms defining a slot for receiving the IV tubing. The flexible clamp has a resilient bias tending to bring the clamping arms to a closed position wherein the IV tubing is squeezed between the clamping arms to close the lumen of the IV tubing to prevent fluid flow, and the clamping arms are movable against the resilient bias of the flexible clamp to an open position wherein the clamping arms are spread from one another relative to the closed position such that the lumen of the IV tubing is allowed to open so that flow through the lumen of the IV tubing is permitted.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: March 28, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Stanford C. Stone, John A. Howard, Jr.
  • Patent number: 5352214
    Abstract: A tubing clamp controlling flow within compressible tubing passing through the clamp which is adapted for inserting the tubing sidewise into the clamp upon opening of a hinged side wall. An adjustable flow controller overlies the tubing and is adapted to rotate, bear upon and squeeze the tubing for precise flow control. A lever arm to actuate the flow controller is in ratcheting engagement with an arcuate bar to hold the lever arm and cylindrical surface of the flow controller in the desired rotative position. The selected position of the lever arm can then be recorded. The tubing clamp can be constructed as a one-piece structure by use of a single mold and prepared as a kit to facilitate use for medical purposes. The assembly of the clamp is thus simplified and the method for controlling flow is accomplished by a series of simple steps.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: October 4, 1994
    Inventor: Rolf A. Oscarsson
  • Patent number: 5318515
    Abstract: A device for regulating fluid flow in an intravenous line comprises a housing and a flow path system in the housing for defining a plurality of separate flow paths having respective predetermined characteristic flow rates. The housing has an input port connectable to an intravenous line segment extending from an intravenous fluid supply and also has an output port connectable to an intravenous line segment extending to a catheter. The device additionally comprises a selector mounted to the housing and in contact with the flow path system for selectively opening the flow paths to connect the output port to the input port, thereby controlling the amount of fluid or solution flowing through the output intravenous line to a patient.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: June 7, 1994
    Inventor: Peter J. Wilk
  • Patent number: 5318546
    Abstract: A catheter irrigation device, readily attached to a fluid supply line connected to an indwelling catheter, is used to dislodge clots or blockages at the distal end of the catheter. The irrigation device comprises a pair of opposing rollers configured and positioned such that the fluid supply can be interposed between the rollers. The irrigation device further includes a flexible linkage which supports the rollers and maintains the rollers about the fluid supply tube. The flexible linkage is configured to receive the fluid supply tube and configured to deflect to cause the rollers to pinch the fluid supply tube, thus creating an occlusion. The flexible linkage and roller are further configured to slide over the fluid supply tube, such that with the rollers creating an occlusion in the tube, the irrigation device is slid for a sufficient distance toward the catheter to sufficiently increase the fluidic pressure within the catheter to dislodge the blockage.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: June 7, 1994
    Inventor: Steven F. Bierman
  • Patent number: 5300043
    Abstract: A closed system suction catheter assembly has a valve which controls suction applied at the patient end of the assembly. The valve has a pinch tube connected in line with the catheter and secured at each end to the housing of the valve. An occluder bar midway along a pivoted lever is urged up by a spring to pinch the tube closed against a fixed occluder and close the valve. The valve has a button protected by a rotatable guard which bears on an end of the lever so that the valve can be opened by pressing down on the button. A snap mechanism engages the occluder lever.
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: April 5, 1994
    Assignee: Smiths Industries Medical Systems, Inc.
    Inventors: Thomas Devlin, Victor Cheung, Karl Ulrich
  • Patent number: 5300044
    Abstract: The present invention provides an apparatus for use in a peristaltic pump 20 which prevents an inadvertent free flow condition prior to loading or after removal of an I.V. tube 26 in the peristaltic pump 20 and which also prevents the inadvertent occlusion of a loaded I.V. tube 26 in the peristaltic pump 20. A standard I.V. tube 26 has a slide clamp 109 provided thereon. The apparatus includes an I.V. tube groove 29 into which the I.V. tube 26 is positioned, a slide clamp receiving area 62 into which the slide clamp 109 is inserted, and a biased sliding member 81 which the inserted slide clamp 109 engages such that the I.V. tube 26 cannot be loaded into the apparatus without the slide clamp 109 occluding the I.V. tube 26. The present invention also contemplates a slide clamp 109, compatible with the apparatus having a surface pad 125 for facilitating automated identification of the slide clamp 109, in cooperation with a nonobstructive sensor 85 in the safety apparatus.
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: April 5, 1994
    Assignee: Baxter International Inc.
    Inventors: Donald J. Classey, Theresa Grajo, Kenneth Lynn, John McVey, Eric Myren, Gabriel Vehovsky
  • Patent number: 5279588
    Abstract: The device for protecting against accidental butterfly needle punctures has a hollow body which delimits an internal accommodation seat for a butterfly needle which is connected to a flexible duct for feeding or withdrawing fluid. The seat has a proximal terminal portion, provided with two longitudinal lateral slits in each of which a respective wing of a butterfly needle can slidingly engage. The seat also has a distal terminal portion provided with retention members for engaging a butterfly needle. A butterfly needle can slide along the seat from a removal start position in the proximal terminal portion toward an irreversible complete retraction position within the distal terminal portion.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: January 18, 1994
    Inventors: Pio Nicoletti, Renzo Cavallon
  • Patent number: 5279549
    Abstract: A closed ventilation and suction catheter system for aspirating or suctioning the bronchial tree or trachea of a patient including a dual lumen catheter, the proximal end of the catheter is connected to a dual valve assembly which is connected to separate irrigation fluid and suction pressure sources and the distal end of the catheter is adapted to be slidably positioned in communication with the bronchial tree of a patient. A transparent and flexible envelope surrounds the catheter to protect the catheter from direct exposure to the atmosphere. The catheter is slidable from the inside of the envelope through an adaptor and a tracheal tube to communicate with the bronchial tree or trachea of the patient. A ventilator is connected to the adaptor near the distal end of the catheter to provide for the artificial ventilation of the patient.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: January 18, 1994
    Assignee: Sherwood Medical Company
    Inventor: Alan B. Ranford
  • Patent number: 5270003
    Abstract: A blood sampling system having an in-line sampling member is provided. The member includes a frangible joint located along the length thereof providing an easily openable port for directly sampling a donor's blood during blood collection into a collection bag. In further embodiments, an integral clamping system can be provided with the sampling member for temporarily cutting off flow of blood from a donor.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: December 14, 1993
    Assignee: Baxter International Inc.
    Inventors: Jean-Claude Bernes, Michel Joie, Baudouin Vanbreedam, Jean-Marie Mathias, Jean-Marc Payrat
  • Patent number: 5257978
    Abstract: An IV safety module (2) is used with a peristaltic type IV pump (5) to prevent the unrestricted flow of IV fluid through an IV line (4) when the door (80) of the IV pump is open. A locking trigger (42) is pivotally mounted to the body. A spring (10) is mounted to the body and has a section (18) which compresses and collapses the IV tube closed, thus substantially halting and IV fluid flowing therethrough, as the spring biases the trigger to the tube clamped position. The safety module is mounted adjacent the pump and is configured so that closing the door of the pump depresses the trigger to open the IV tube.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: November 2, 1993
    Assignee: Habley Medical Technology Corporation
    Inventors: Terry M. Haber, William H. Smedley, Clark B. Foster
  • Patent number: 5254092
    Abstract: A valve for controlling the flow of fluid through a flow path, which valve comprises a housing defining a flow path and having two indented portions about the flow path, a poppet mounted within each indented portion such that the internal end of each indented portion defines a seat which provides a fluid tight seal when the associated poppet head is held against the seat, a spring associated with each poppet for holding each poppet against each seat, a rigid moveable member associated with each poppet and adapted to alter the orientation of the associated poppet relative to its seat and thereby seal or unseal the flow path around the poppet, and an actuator for moving each movable member; and inflator apparatus incorporating at least one valve.
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: October 19, 1993
    Assignee: American Medical Systems, Inc.
    Inventor: Mark Polyak
  • Patent number: 5254083
    Abstract: A suction and irrigation apparatus is provided for selectively delivering suction or irrigation fluid to a patient during surgery or the like. A pair of resilient tubes are provided which is connected with a suction source and irrigation source at one end and is connected through a Y-shaped connector at the other end with a handpiece having clamping valves thereon disposed between the ends of the resilient tubes. The handpiece has a housing with openings in the ends thereof to provide passageways for the resilient tubes. Clamping valves are mounted in the housing which are spring urged to close the resilient tubes. A bracket is slidably mounted on the sides of the handpiece housing and the bracket is slidable to a position overlying the clamping valves so as to maintain the clamping valves in an open position. When the clamping valves are held in an opened position by the bracket, the handpiece can be moved along the length of the resilient tubes to position the handpiece at any desired location.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: October 19, 1993
    Assignee: Conmed Corporation
    Inventors: John S. Gentelia, Frank Williams, Alfred Solan, Sharyn Longo
  • Patent number: 5238218
    Abstract: A tongue and groove construction maintains the catch and latch part of a tube clamp in full registration with one another across its entire range of positions from fully open to fully closed. A groove bisects the teeth of the latch member and a complementally formed tongue bisects the catch member of the clamp. Thus, when the tongue is slidably received within the groove, the parts of the catch member that flank the tongue releasably engage the parts of the latch member that flank the groove. This maintains the tube pinching elements in full alignment with one another so that when the pinching elements are fully displaced toward one another, no liquid fluid may flow through a cannula disposed therebetween. The teeth are not provided in a second embodiment, but the tongue and groove arrangement is employed in that embodiment. The tongue engages the underside of a lip, and the clamp is either fully open or fully closed.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: August 24, 1993
    Inventor: Glenn H. Mackal