Patents Represented by Law Firm Gerstman, Ellis & McMillin, Ltd.
  • Patent number: 5772587
    Abstract: The quantitative determination of various materials in highly scattering media such as living tissue may be determined in an external, photometric manner by the use of a plurality of light sources positioned at differing distances from a sensor. The light from said sources is amplitude modulated, and, in accordance with conventional frequency domain fluorometry or phosphorimetry techniques, the gain of the sensor is modulated at a frequency different from the frequency of the light modulation. Data may be acquired from each of the light sources at differing distances at a frequency which is the difference between the two frequencies described above. From these sets of data from each individual light source, curves may be constructed, and the slopes used to quantitatively determine the amount of certain materials present, for example glucose, oxyhemoglobin and deoxyhemoglobin in living tissue.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: June 30, 1998
    Assignees: The Board of Trustees of The University of Illinois, I.S.S. (USA) Inc.
    Inventors: Enrico Gratton, Sergio Fantini, Maria Angela Franceschini, William Mantulin, Beniamino Barbieri
  • Patent number: 5772624
    Abstract: Blood lines for hemodialysis and other blood handling procedures may be reused by placing connectors intermediately along the length of the blood lines so that the lines can be disconnected to separate out reusable portions thereof. Specifically, the bulk of the blood lines used may comprise branchless lengths of tubing which are easily reusable, and may be cleaned and stored along with a dialyzer or similar device by connection to a conventional reuse machine. Also, the connectors on the blood lines which are reused may have first and second sealing surfaces. The first sealing surfaces are used in the connections made to form the blood line in its normal form for use. Then, during cleaning and sterilization for reuse, the reusable connectors can connect first and second lengths of blood lines together making use of a second sealing surface, in which the first sealing surfaces are exposed to cleaning/storing solution to cause cleaning and antibacterial action on the first sealing surfaces.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: June 30, 1998
    Assignee: Medisystems Technology Corporation
    Inventors: David S. Utterberg, Neil J. Sheehan
  • Patent number: 5772638
    Abstract: A medical needle protector sheath having slotted sidewalls to receive a winged needle. The sidewalls define at least one catch projection and preferably one in each sidewall, spaced from closed ends of the slots in the sidewalls, to prevent needle wings occupying the sheath adjacent the closed ends from easily sliding away. The catch projection defines an elongated member having a first end that defines a wing catching tip extending into one of the slots. The elongated member is attached to the sidewall only at an elongated member end that is opposed to the first end. This permits the elongated member to flex in the sidewall plane, providing improved receipt and retention of the needle wings.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: June 30, 1998
    Assignee: Medisystems Technology Corporation
    Inventors: David S. Utterberg, William J. Schnell
  • Patent number: 5769815
    Abstract: A plastic blood chamber comprises a chamber-defining wall having a first blood inlet port adjacent to the end of the chamber and a blood outlet port adjacent typically the opposed end of the chamber. The inlet port is positioned in separate, lateral relation with the chamber, and has a conduit extending longitudinally of the chamber from the inlet port toward a central chamber portion in such separate, lateral relation to the chamber. The conduit curves into communication with the chamber in a transverse direction at an inlet position in the central chamber portion. A second portion of the chamber which is laterally opposed to the inlet position of the conduit defines a sloping shoulder to turn lateral blood flow from the conduit gently upwardly to define a gentle, circulatory flow of blood in an upper portion of the chamber. The chamber upper portion has a wall that carries projections to create blood flow eddys that slow the upward motion of bubbles present.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: June 23, 1998
    Assignee: Medisystems Technology Corporation
    Inventor: David S. Utterberg
  • Patent number: 5766714
    Abstract: An adhesive coated label can be adherent to untreated polyolefin containers, and can be significantly oil resistant to avoid staining of the label if brought into contact with oil. The label comprises a label body of a clay-reinforced paper. The label body carries an adhesive layer on one side which preferably comprises from 0.3 to 10 weight percent of wood rosin or wood rosin ester, to provide a desired adhesion to polyolefin. A removable backing layer typically covers the adhesive layer before use. The backing layer has a release layer positioned against the adhesive layer, which comprises a silicone resin cross linked by the reaction of Si-H linkages with silanol or silicone-olefin linkages. The release layer may comprise a polypropylene sheet, particularly a polypropylene strip on which many labels are carried, to facilitate the manufacture and storage of the labels.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: June 16, 1998
    Assignee: Gold Eagle Co.
    Inventors: Michael S. Profetto, Robert T. Wicks
  • Patent number: 5766029
    Abstract: A connector is provided for attaching and mounting a first electrical device, such as a carbon monoxide detector (36) or a motion detector, to a second electrical device such as a smoke detector (34) or another source of electrical power premounted on the ceiling or wall. The connector comprises an elongated member defining spaced first and second apertures (18,28). At least a portion of the first aperture (18) may extend only partway through the elongated member to provide a back wall which is used for securing the connector to the wall or ceiling. The second aperture (28) extends completely through the elongated member, for receiving the preinstalled second electrical device (34). A channel (32) is defined in the elongated member extending between the first and second apertures, to provide an enclosed space for electric wire (38) to connect between the respective electrical devices mounted in the respective apertures.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: June 16, 1998
    Inventor: Mark Raison
  • Patent number: 5766657
    Abstract: A method of making melt-controlled cheese and a melt-controlled cheese are described. The method includes mixing a curd produced by adding acid to hot milk and a curd product by rennet coagulation. A cheese with taste and texture similar to natural cheese but with desirable melting properties is produced.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: June 16, 1998
    Assignee: California Polytechnic State University
    Inventors: Nana Y. Farkye, Frank Lee, Daniel Best
  • Patent number: 5752959
    Abstract: A rotatable drum for winding cable with an automatic cable lock. The rotatable drum comprises a rotatable shaft which has a first transverse aperture, and an outer drum member having an outer cable winding surface, which outer drum member is carried on the shaft and freely rotatable rotation therewith. The outer drum member defines a second transverse aperture which is positioned to align with the first transverse aperture in a first rotational position of the outer drum member. The two apertures can also be spaced in other rotational positions. Thus insertion of the cable end into the aligned first and second transverse apertures, plus rotation of the shaft to wind the cable about the outer drum member, can cause spontaneous locking of the cable between the first and second apertures by opposed walls of the respective apertures pinching against the cable.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: May 19, 1998
    Assignee: Pioneer Laboratories, Inc.
    Inventor: Francis J. Korhonen
  • Patent number: 5751598
    Abstract: A water softening apparatus is provided including a water tank, a brine tank, chlorination electrodes for providing chlorination to water flowing in the water tank and a circuit for providing electrical energy to the chlorination electrodes. A microprocessor controls the circuit, with the microprocessor being software controlled to determine when regeneration should commence, when backwash should terminate, when brine/slow rinse should commence, when the chlorination electrodes should be energized, when the chlorination electrode energization should terminate, when brine/slow rinse should terminate, when fast rinse should commence, and when fast rinse should terminate.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: May 12, 1998
    Assignee: Culligan International Company
    Inventors: John E. Zabinski, Roger Rehfeldt
  • Patent number: 5741260
    Abstract: Surgical crimping pliers have operating handles and connected, opposed jaws. The jaws define opposed recesses for carrying and crimping a tubular crimp member, which is preferably of oval configuration for carrying a plurality of multistrand cable sections so that, upon crimping, the cable sections are secured together. A capstan is carried on one of the handles for winding a plurality of cable portions so that tension may be placed on both ends of a cable loop array wound about a bone structure, to provide a predetermined, quantitative tension. Then the cable sections within the crimp are secured together by collapse of the crimp. A multistrand cable is preferably used, which exhibits great advantage over single strand wire, and which carries surgical needles of differing type secured to each end thereof.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: April 21, 1998
    Assignee: Pioneer Laboratories, Inc.
    Inventors: Matthew N. Songer, Francis J. Korhonen
  • Patent number: 5733400
    Abstract: An intravascular catheter carries a helical reinforcement member embedded within at least a portion of the tubular wall of the catheter. The helical reinforcement member comprises a helical first portion having coils of greater pitch than the pitch of helical coils of a second portion. Preferably, the catheter is for insertion into brain arteries, and comprises a flexible tube having an outer diameter of no more that about 0.05 inch, for example 3 French or smaller. The flexible tube defines outer and inner tubular layers. The inner tubular layer surrounds a catheter lumen and comprises chemically inert fluorinated polymer such as PTFE. The outer tubular layer comprises at least three longitudinally spaced, connected tubular sections. The sections are of successively increasing flexibility from the proximal toward the distal catheter end.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: March 31, 1998
    Assignee: Cordis Corporation
    Inventors: Susana M. Gore, Mark Mueller, Nicholas Green, Jeffrey G. Gold, Peter P. Soltesz
  • Patent number: 5729524
    Abstract: An optical disc changer having an optical disc player and a magazine for holding discs is provided. A disc transporter for transporting discs has a carrier to carry a particular disc from the magazine to the disc player for play, and return the disc to its original position after the disc has been played. The disc is seated in the carrier by gravity and makes contact with the carrier only at its rim.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: March 17, 1998
    Assignee: P & P Marketing, Inc.
    Inventors: Andrew J. Pines, Edward E. Pellegrini
  • Patent number: 5728104
    Abstract: A catheter balloon is prepared for inflation, and the balloon is inflated by the following process. At least a portion of an elastic, thermoplastic tube is radially stretched until the radially stretched tube portion exhibits a desired increase in molecular orientation. The stretching conditions, such as selective heating, preferably cause a central section of the stretched tube portion to have less wall thickness than end sections of the tube portion. At least part of the tube portion may be longitudinally stretched relative to the tube, to create a desired biaxial molecular orientation. Thereafter, the tube portion is optionally placed into a stent, the tube portion being part of a catheter. The tube portion is inserted into a patient to position the stent and tube portion at a desired position, such as a location in the coronary artery.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: March 17, 1998
    Assignee: Cordis Corporation
    Inventor: Thomas N. Trotta
  • Patent number: 5718550
    Abstract: A system is provided for transferring loads between railroad cars on different tracks. If desired the system may be highly automated. A series of parallel, adjacent railcar tracks are provided for carrying separate strings of connected railcars and/or boats or trucks in side-by-side relation. A second series of tracks is positioned parallel to and adjacent the first-named series of tracks. A plurality of load lifting mechanisms are provided, these mechanisms being independently movable along the second tracks. The mechanisms each have at least one and preferably a plurality of grapplers capable of lifting a load from one vehicle such as a railcar on a first of the railcar tracks and placing the load on another vehicle such as a railcar on a second of the railcar tracks. Thus, the plurality of load lifting mechanisms can redistribute the loads of separate strings of connected railcars and other vehicles.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: February 17, 1998
    Assignee: Mi-Jack Products, Inc.
    Inventors: John J. Lanigan, Sr., John J. Lanigan, Jr., William P. Lanigan, Michael T. Lanigan
  • Patent number: 5713851
    Abstract: A method of manufacturing a catheter which comprises a pair of separate lumens defining a higher pressure lumen and a lower pressure lumen, plus a side opening positioned adjacent the distal end of the catheter and communicating with the lower pressure lumen. A relatively thin tube defines the higher pressure lumen. One incorporates the relatively thin tube into a lumen of a relatively thick tube, followed by forming of the distal end of the high pressure lumen to curve rearwardly to form a proximally extending section having a proximal end. One then forms the side opening at a position adjacent the proximal end of the proximally extending section. The relatively thin tube may carry fibrous reinforcement to facilitate its use in defining the higher pressure lumen.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: February 3, 1998
    Assignee: Cordis Corporation
    Inventors: Alexander Christiaan Boudewijn, Tiemen Noppert
  • Patent number: 5711909
    Abstract: An intravascular catheter carries a helical reinforcement member embedded within at least a portion of the tubular wall of the catheter. The helical reinforcement member comprises a helical first portion having coils of greater pitch than the pitch of helical coils of a second portion. Preferably, the catheter is for insertion into brain arteries, and comprises a flexible tube having an outer diameter of no more that about 0.05 inch, for example 3 French or smaller. The flexible tube defines outer and inner tubular layers. The inner tubular layer surrounds a catheter lumen and comprises chemically inert fluorinated polymer such as PTFE. The outer tubular layer comprises at least three longitudinally spaced, connected tubular sections. The sections are of successively increasing flexibility from the proximal toward the distal catheter end.
    Type: Grant
    Filed: May 9, 1996
    Date of Patent: January 27, 1998
    Assignee: Cordis Corporation
    Inventors: Susana M. Gore, Mark Mueller, Nicholas Green, Jeffrey G. Gold, Peter P. Soltesz
  • Patent number: 5704917
    Abstract: A hollow guard having a wall for receiving and enclosing a medical needle after use. The guard has an open end to allow a needle to be inserted into the guard. An adhesive member has a section typically permanently attached to the wall, with portions of the adhesive member being spaced from the wall, for temporary attachment to a patient's skin to secure the guard on the patient's skin.
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: January 6, 1998
    Assignee: Medisystems Technology Corporation
    Inventor: David S. Utterberg
  • Patent number: 5704924
    Abstract: A medical needle protector sheath which comprises a body having a top wall, side walls, an open first end, and slot formed in each side wall to receive a needle wing extending through each of the slots. The slots extend from the first end toward a second sheath end opposed to the first end, with the slots terminating in the side walls at end points which are spaced from the second end. Typically, first portions of the slots adjacent to the end points slope away from the top wall as the slots extend toward the second end. Other portions of the slots slope toward the top wall as the slots extend to the second end. Various improvements are described which result in safer-and easier use of the needle protector sheath.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: January 6, 1998
    Assignee: Medisystems Technology Corporation
    Inventors: David S. Utterberg, William J. Schnell
  • Patent number: 5702399
    Abstract: A surgical connector for cable comprises a body having a pair of opposed ends and a first side extending between the ends. Outwardly extending projections adjacent the first side and ends may be provided to facilitate securance of the connector in a desired position. Cable-receiving bores extend from each of the ends inwardly toward each other, typically at an obtuse angle of less than 180.degree.. The bores have inner ends that communicate with a central aperture which is open to at least the side of the body which is opposed to the first side. Alternatively, the central aperture may extend entirely through the body and be open to both the first side and the opposed side. Also, a novel retention technique for cable is disclosed, for more general use, if desired.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: December 30, 1997
    Assignee: Pioneer Laboratories, Inc.
    Inventors: Thomas S. Kilpela, George J. Iwanski, Matthew N. Songer, Robert J. Songer
  • Patent number: 5699272
    Abstract: A water softening system is provided in which a determination is made whether the slow rinse cycle of a regeneration has been completed or is abnormal. A reference cell and a spaced sensing cell are provided in a water tank. The impedance difference of the solution between the reference cell and the sensor cell is sensed. If the impedance difference is a first state, then after a predetermined period of time a determination is made if the impedance difference is a second state. If the impedance difference is a second state, then after a predetermined period of time a determination is made if the impedance difference is a third state. If the impedance difference is a third state, this indicates that the sodium ion concentration is uniformly reduced in the zone between the reference cell and the sensing cell and that the slow rinse cycle has been completed.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: December 16, 1997
    Assignee: Culligan International Company
    Inventor: John E. Zabinski