Patents Assigned to Richard A. Hillstead, Inc.
  • Patent number: 8647363
    Abstract: A hydraulically actuated medical instrument includes an elongated shaft having proximal and distal ends, a hydraulically actuated end effector at the distal end of the shaft and a fluid flow path extending through the shaft to the end effector. The end effector may be directly manually operated by way of a handle located at the proximal end of the shaft or remotely, for example, via robotic controller. Articulation joints may be provided along the shaft, between the shaft and end effector or handle, or elsewhere. The hydraulic actuation of the present invention permits multiple axis instrument articulation, miniaturization and simplified instrument fabrication.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: February 11, 2014
    Assignee: Richard A. Hillstead, Inc.
    Inventors: Richard A. Hillstead, Bryan D. Knodel
  • Patent number: 8308757
    Abstract: A hydraulically actuated medical instrument includes an elongated shaft having proximal and distal ends, a hydraulically actuated end effector at the distal end of the shaft and a fluid flow path extending through the shaft to the end effector. The end effector may be directly manually operated by way of a handle located at the proximal end of the shaft or remotely, for example, via robotic controller. Articulation joints may be provided along the shaft, between the shaft and end effector or handle, or elsewhere. The hydraulic actuation of the present invention permits multiple axis instrument articulation, miniaturization and simplified instrument fabrication.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: November 13, 2012
    Assignee: Richard A. Hillstead, Inc.
    Inventors: Richard A. Hillstead, Bryan D. Knodel
  • Patent number: 8043328
    Abstract: A hydraulically actuated medical instrument includes an elongated shaft having proximal and distal ends, a hydraulically actuated end effector at the distal end of the shaft and a fluid flow path extending through the shaft to the end effector. The shaft may be capable of an angled configuration where at least a portion of the shaft is manually movable to a direction in which it extends at an angle to another portion of the shaft. The end effector is not limited to a linear configuration and at least a portion of an elongated end effector extends at an angle relative to another portion of the end effector as is needed or desirable for the particular procedure to be performed.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: October 25, 2011
    Assignee: Richard A. Hillstead, Inc.
    Inventors: Kevin F. Hahnen, Richard A. Hillstead, Bryan D. Knodel