Patents by Inventor Maxwell E. Whisson

Maxwell E. Whisson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6746420
    Abstract: A parenteral apparatus (10, 50, 60, 70, 90, 110, 120) comprises a chamber (26) for parenteral fluid within a housing (12). The apparatus also includes an axially slidable seal (24) operatively associated with a needle (28) and a catheter (32) enclosing the needle (28) in part. In operation, the needle (28) makes an incision in tissue by means of a sharp point (33) and it is then withdrawn into the housing (12) whilst the catheter remains in contact with the tissue. The parenteral fluid is expelled by movement of the seal (24) from the chamber (26) through the needle (28) initially and subsequently through the needle (28) and the catheter (32) as the needle (28) is withdrawn.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: June 8, 2004
    Inventors: Dean B. Prestidge, Maxwell E. Whisson
  • Patent number: 6626868
    Abstract: A needle apparatus has a thin walled catheter enclosing a tubular needle having a sharp point, the catheter and the needle being relatively moveable longitudinally a short distance, from a first position where the needle projects from the catheter and to a second position at which the sharp point is located within the catheter. The needle remains in the fluid pathway of the needle apparatus at all times. The needle apparatus is arranged to pierce tissue when the catheter and the needle are in the first position.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: September 30, 2003
    Inventors: Dean B. Prestidge, Maxwell E. Whisson
  • Patent number: 5624185
    Abstract: A mixer comprising a platform (12) which is configured to be able to support a receptacle containing a quantity of liquid. The platform (12) being supported from a base (18) to be pivotable about a first axis and a second axis where the first and second axes are perpendicular to each other, a drive motor (37, 39, 40 and 42) provided between the base (18) and the platform (12) to cause joint pivotable movement of the platform (12) about both the first and second axes to effect a rocking action of the platform (12). A particular application of the invention relates to a device which can be used during blood collection to facilitate both mixing and quantity measurement of the blood being collected.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: April 29, 1997
    Assignee: Max-Medical Pty Ltd.
    Inventor: Maxwell E. Whisson
  • Patent number: 5562635
    Abstract: A parenteral device (10) comprising a body (12) having a forward end (26) and a rearward end (34). The forward end (26) is capable of receiving a hollow retractable needle (20) therein so as to project therefrom. The retractable needle (20) is slidable relative to the body (12) and the body (12) also includes a chamber (14) capable of receiving parenteral fluid and capable of being reduced in volume to expel fluid contained therein. The needle (20) is capable of being manually retracted within the body (12) such that the chamber (14) reduces in volume to expel fluid contained therein and such that the needle (20) is retracted to be wholly contained within the body (12).
    Type: Grant
    Filed: January 18, 1995
    Date of Patent: October 8, 1996
    Assignee: Eastland Technology Australia Pty Ltd
    Inventor: Maxwell E. Whisson
  • Patent number: 5498245
    Abstract: An attachment to a parenteral device (11) where the parenteral device (11) comprises a body (12) having a duct (15) which is convey a parenteral fluid, the attachment comprising a housing (20) adapted to be removably engageable with the body (12) and to be rigidly supported by the body when in engagement therewith, the housing (20) having a flow path (22, 23) which communicates with the duct (15) on engagement of the housing with the body; a hollow needle body (26) slidably supported within the housing (20) and comprising a hollow needle having a free end; the needle body (26) is slidably received within the housing (20) for movement between a first position at which the free end is received within the housing and a second position at which the free end extends from the housing, and the needle body is movable from the second position to the first position; a retaining means (27, 32, 33) provided to retain the needle body (26) in the first or second position; the needle having a first aperture (28) provided at
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: March 12, 1996
    Assignee: Eastland Technology Australia PTY LTD
    Inventor: Maxwell E. Whisson
  • Patent number: 5425722
    Abstract: A parenteral device having a body slidably supporting a hollow needle. The needle is slidable between a first position in which it is completely retracted within the body and a second position wherein a portion of the needle projects outside of the body. The body further houses a chamber isolated from the needle when the needle is in the first position. Movement of the needle into the second position causes an end of the needle to pierce a wall of the chamber thereby establishing communication between the chamber and needle.
    Type: Grant
    Filed: January 11, 1993
    Date of Patent: June 20, 1995
    Inventor: Maxwell E. Whisson
  • Patent number: 5201718
    Abstract: A parenteral device (10) for the transfer of fluids to or from a living body. The device (10) comprises a body (11) having a chamber (18) and an opening (17) provided in the wall of the chamber (18). A hollow needle (19) is open at its outer end and is slidably mounted to the body (11) for axial movement therein. The needle (19) is movable between a first position in which it extends through said opening (17) such that its outer end extends beyond the body (11) and a second position in which the outer end of said needle is located innermost from said opening (17). A second aperture (21) in the wall of the needle (19) provides communication between the chamber (18) and the lumen of the needle (19) when in the first position.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: April 13, 1993
    Inventor: Maxwell E. Whisson