Patents Assigned to Helena Laboratories
  • Patent number: 5358641
    Abstract: An analyzer system for automatic column chromatography includes chromatographic columns which are mounted in a rack. A drop removal mechanism system shakes the rack to transfer the last drop of eluate from the tip of a chromatographic column to a receptacle below the tip before the column is repositioned over another receptacle and another fluid or operation is introduced into the column. This prevents one eluate from contaminating another. The chromatographic column may have an upper end which is sealed by a foil member. During use, the foil member is ruptured by lowering a pressure cylinder with a seal-punching head against it. The pressure cylinder, which is part of the pressure tip unit, is then withdrawn so that fluid can be introduced into the column via the ruptured foil member. The pressure tip unit is then lowered into sealing engagement with the column so that pressure can be applied via a bore in the pressure cylinder.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: October 25, 1994
    Assignee: Helena Laboratories Corporation
    Inventors: James R. M. Sanford, Patrick M. Frank, Joseph H. Golias, William C. Jennings
  • Patent number: 5298140
    Abstract: A reaction apparatus for a biochemical examination is provided having at least a pair of band-shaped conveying members, a portion of each of which proceeds over a predetermined distance in the same direction in a closely contacted state, and which convey a sample-supporting thin film while sandwiching it between the closely contacted portions, and a heat source which is provided in the vicinity of the closely contacted portions of the pair of band-shaped conveying members, and which maintains at a predetermined temperature the sample-supporting thin film sandwiched between the closely contacted portions. The sample-supporting thin film is conveyed from one side to the other side between the pair of band-shaped conveying members. On the other side, the sample-supporting thin film is supplied with the reagent, then caused to approach the heat source while being sandwiched between the band-shaped conveying members.
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: March 29, 1994
    Assignee: Helena Laboratories Co., Ltd.
    Inventor: Tokiya Nakazato
  • Patent number: 5273888
    Abstract: A chemical test kit for determining the presence of occult blood in a stool specimen is disclosed which includes an improved monitor system for verifying the effectiveness of the chemicals used in the test. A method of testing for occult blood is also disclosed which method includes verifying the effectiveness of the chemicals utilized in the test.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: December 28, 1993
    Assignee: Helena Laboratories Corporation
    Inventor: Philip A. Guadagno
  • Patent number: 5254350
    Abstract: A process for preparing a thromboplastin extract including extracting a powdered thromboplastin source in an aqueous solution having a metal ion chelator, and separating the powder in solution into sedimented powder and supernatant thromboplastin extract is disclosed. The supernatant thromboplastin extract is mixed with calcium ions, and may be mixed with one or more of a stabilizer and a preservative, to prepare thromboplastin reagent.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: October 19, 1993
    Assignee: Helena Laboratories Corporation
    Inventors: David A. Barrow, Richard L. Rullman
  • Patent number: 5251786
    Abstract: A biological fluid collection and dispensing apparatus for attachment to a test tube includes a pump and a cannula assembly including a fluid transfer cannula and a vent cannula housed partially within the pump. Biological fluid may be both collected and delivered with the apparatus, and the apparatus may remain attached to the test tube during processing of the collected biological fluid sample.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: October 12, 1993
    Assignee: Helena Laboratories Corporation
    Inventor: Robert J. Sarrine
  • Patent number: 5228988
    Abstract: An analyzer system for automatic column chromatography includes chromatographic columns which are mounted in a rack. A drop removal mechanism system shakes the rack to transfer the last drop of eluate from the tip of a chromatographic column to a receptacle below the tip before the column is repositioned over another receptacle and another fluid or operation is introduced into the column. This prevents one eluate from contaminating another. The chromatographic column may have an upper end which is sealed by a foil member. During use, the foil member is ruptured by lowering a pressure cylinder with a seal-punching head against it. The pressure cylinder, which is part of the pressure tip unit, is then withdrawn so that fluid can be introduced into the column via the ruptured foil member. The pressure tip unit is then lowered into sealing engagement with the column so that pressure can be applied via a bore in the pressure cylinder.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: July 20, 1993
    Assignee: Helena Laboratories Corporation
    Inventors: James R. M. Sanford, Patrick M. Frank, Joseph H. Golias, William C. Jennings
  • Patent number: 5217874
    Abstract: A test sheet for the determination of the presence of a substance having peroxidase-like activity in a throw-in-the-bowl fecal occult blood test, includes a specimen test area and a positive control area. The test area has deposited thereon a test ink having at least one oxygen donor reagent and a chromogen reagent capable of being oxidized by the oxygen donor in the presence of blood or a substance having peroxidase-like activity, to provide a visually observable change of color. The test ink also includes a water soluble polymer for immobilizing the chromogen and oxygen donor. The positive control area has deposited thereon the test ink and a substance having the peroxidase-like activity.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: June 8, 1993
    Assignee: Helena Laboratories Corporation
    Inventors: Philip A. Guadagno, Janine P. Burrows
  • Patent number: 5207918
    Abstract: An analyzer system for automatic column chromatography, and method for its use, includes an array of chromatograph columns and multi-cell cuvettes associated with each column. Chromatographic separation takes place under a constant, low fluid pressure. A pressure system distributes air to each column during chromatographic separation but prevents leakage of air if the column array is partially empty. The multi-cell cuvette collects and separates the eluates associated with a single column. The system provides for automatic removal of caps from the bottoms of the chromatograph columns and provides for automatic optical density reading.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: May 4, 1993
    Assignee: Helena Laboratories Corporation
    Inventors: James R. M. Sanford, Patrick M. Frank, Joseph H. Gollas, William C. Jennings
  • Patent number: 5200045
    Abstract: A method and apparatus for removing unreacted protein and unreacted antisera from a gel plate during immunofixation electrophoresis. The apparatus includes a pressure plate movable toward and away from a fixed base for exerting a desired force on the electrophoresis plate. A stop member limits the movement of the pressure plate toward the fixed base thus controlling the amount of pressure on the electrophoresis plate.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: April 6, 1993
    Assignee: Helena Laboratories Corporation
    Inventors: Barbara M. Warren, James R. M. Sanford, Edgar F. Neely, Robert J. Sarrine
  • Patent number: 5195534
    Abstract: A biological fluid collection and dispensing apparatus for attachment to a sealed test tube includes a pump and a housing, the housing having a movable portion, and a cannula assembly mounted relative to the housing. Biological fluid is withdrawn from a patient and flows through the pump and housing into the interior of the sealed test tube. The pump is actuated initially to release a delivery conduit and to move the housing such that part of the cannula assembly pierces the test tube seal. The pump is thereafter actuated to pressurize the contents of the test tube such that aliquots may be dispensed through the cannula assembly and delivery tube.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: March 23, 1993
    Assignee: Helena Laboratories Corporation
    Inventor: Robert J. Sarrine
  • Patent number: 5196167
    Abstract: A test sheet for the determination of the presence of a substance having peroxidase-like activity in a throw-in-the-bowl fecal occult blood test, includes a specimen test area and a positive control area. The test area has deposited thereon a test ink having at least one oxygen donor reagent and a chromogen reagent capable of being oxidized by the oxygen donor in the presence of blood or a substance having peroxidase-like activity, to provide a visually observable change of color. The test ink also includes a water soluble polymer for immobilizing the chromogen and oxygen donor. The positive control area has deposited thereon the test ink and a substance having the peroxidase-like activity.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: March 23, 1993
    Assignee: Helena Laboratories Corporation
    Inventors: Philip A. Guadagno, Janine P. Burrows
  • Patent number: 5192501
    Abstract: A method of formulating a test ink for a fecal occult blood test product including the steps of: (a) providing at least one chromogen reagent in a first solution; (b) providing a moisture barrier which is a water-soluble polymer; (c) adding at least one oxygen donor reagent to the moisture barrier; (d) adding at least one color enhancer to the result of step (c) to thereby form a second solution; and (e) adding the second solution to the first solution.
    Type: Grant
    Filed: April 4, 1989
    Date of Patent: March 9, 1993
    Assignee: Helena Laboratories Corporation
    Inventors: Philip A. Guadagno, Janine P. Burrows
  • Patent number: 5185066
    Abstract: An improvement in the immunofixation electrophoresis procedure for detecting proteins in serum, urine or cerebral spinal fluids. Samples are placed on a gel and subjected to electrophoresis for resolving or separating proteins. Thereafter, antisera are applied to the sample areas to cause an antibody-antigen precipitation reaction if the specific proteins are present. The invention includes the provision of a control system for each electrophoretic gel to verify that the antisera have retained their lability, i.e., the ability to react.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: February 9, 1993
    Assignee: Helena Laboratories Corporation
    Inventor: Tipton L. Golias
  • Patent number: 5179960
    Abstract: A biological fluid collection and dispensing apparatus for attachment to a test tube includes a pump and a cannula assembly housed partially within the pump including a fluid transfer cannula and a vent cannula. Biological fluid or other fluid can be both collected and delivered with the apparatus, which apparatus may remain attached to the test tube during any processing of the collected biological fluid sample.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: January 19, 1993
    Assignee: Helena Laboratories Corporation
    Inventor: Robert J. Sarrine
  • Patent number: 5173265
    Abstract: A manually operated apparatus for attaching one or more pump mechanisms to a like number of sealed test tubes, each test tube sealed by a resilient, puncturable closure. The apparatus includes a frame having a base, a support attached to the frame for releasably supporting one or more pump mechanisms, a test tube holder for releasably holding one or more test tubes, the holder movably engaging and being displaceable on the base of the frame into position in alignment with the support, and a manually operated insertion mechanism, attached to the frame, for displacing the support towards the holder (with test tubes therein), to puncture the closure of a test tube with a pump mechanism. Using the apparatus includes placing one or more test tubes having closures into the holder, displacing the holder into position, placing one or more pump mechanisms in the support, and manually activating the insertion mechanism to puncture the one or more closures with the one or more pump mechanisms.
    Type: Grant
    Filed: June 25, 1991
    Date of Patent: December 22, 1992
    Assignee: Helena Laboratories Corporation
    Inventors: Tipton L. Golias, Ovay H. Mayes, Robert J. Sarrine
  • Patent number: 5171410
    Abstract: An improved gel formulation and method for high-voltage, short duration electrophoretic separation of isoforms of CK isoenzymes. The gel is an homogeneous mixture of agarose and a buffer having a molarity of about 0.05M. CK-MM and/or CK-MB isoforms are electrophoretically separated.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: December 15, 1992
    Assignee: Helena Laboratories Corporation
    Inventors: Philip A. Guadagno, Aungnapa Tansamrit, Subphong Tansamrit
  • Patent number: 5147522
    Abstract: Apparatus adapted to provide electrophoresis current sheets in opposite longitudinal directions of an electrophoresis plate is disclosed. The apparatus is designed to work with an existing automatic electrophoresis machine which performs all electrophoresis processing, scanning and densitometer functions automatically under computer control. The apparatus of the invention re-routes the normal polarity of electrodes of the automatic electrophoresis machine into a configuration such that a center electrode bar has positive electric potential applied to it and two end electrodes have negative electrical potential applied to them.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: September 15, 1992
    Assignee: Helena Laboratories Corporation
    Inventor: Robert J. Sarrine
  • Patent number: 5139174
    Abstract: An apparatus for dispensing a liquid is provided which is adapted to be attached to a container such as a test tube and includes a hollow resilient dispensing member having a nipple at one end through which a liquid is dispensed in a dropwise manner. The dispensing member is formed of a resilient material which enables liquid to be dispensed therethrough by squeezing the sides of the dispensing member. In a modification, the dispensing member is provided with an internal filter by which fluid can be conveniently filtered as it is dispensed. A method for dispensing a liquid from a container using the apparatus of the present invention is also provided.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: August 18, 1992
    Assignee: Helena Laboratories Corporation
    Inventor: Tipton Golias
  • Patent number: 5137614
    Abstract: An improvement in the immunofixation electrophoresis procedure for detecting proteins in serum, urine or cerebral spinal fluids. Samples are placed on a gel and subjected to electrophoresis for resolving or separating proteins. Thereafter, antisera are applied to the sample areas to cause an antibody-antigen precipitation reaction if the specific proteins are present. The invention includes the provision of a control system for each electrophoretic gel to verify that the antisera have retained their lability, i.e., the ability to react.
    Type: Grant
    Filed: August 11, 1988
    Date of Patent: August 11, 1992
    Assignee: Helena Laboratories Corporation
    Inventor: Tipton L. Golias
  • Patent number: 5125544
    Abstract: A pipette pump for pipetting fluid includes an elongated hollow barrel and a pump mechanism at one end of the barrel. The pump mechanism includes a compressible portion which is actuated to fill the pipette barrel. Thereafter, the pipette barrel is vented to the atmosphere to bypass the pump mechanism such that the fluid in the pipette barrel is discharged by gravitational forces and atmospheric pressure rather than by actuation of the compressible portion of the pump mechanism. The pipette barrel may be repeatedly vented to discharge the contents of the pipette in a series of aliquots. The pump mechanism, when compresssed and not bypassed, provides rapid, positive displacement discharge of the contents of the pipette.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: June 30, 1992
    Assignee: Helena Laboratories Corporation
    Inventors: Seymon N. Millner, Ronald A. Mayes