Patents Assigned to Masayoshi Yokoyama
  • Patent number: 5681332
    Abstract: A ligation apparatus includes an opening portion at a front end of a rod, in communication with the front end side, the left side, and the right side, having a cross section of substantially a U-shaped configuration in the direction of axis of the rod, and a mobile unit in the opening portion. The mobile unit includes a body held in a movable manner, and a thread supporting unit having the tip end protruding from the opening portion for supporting a ligature at the front end. The ligature has one end tied to the thread supporting unit of the mobile unit, and the other end translated downwards from the upper side of the mobile unit according to a predetermined direction of rotation, whereby a knot of the ligature is formed. Therefore, a ligation site can be ligated extracorporeally even if the hole puncture in a somatic layer is small.
    Type: Grant
    Filed: November 7, 1995
    Date of Patent: October 28, 1997
    Assignees: Takamasa Onuki, Masayoshi Yokoyama
    Inventor: Takamasa Onuki
  • Patent number: 5662666
    Abstract: A ligative suturer according to the present invention comprises a first rod which is connected with a ligative sutural member, and a second rod which is connected with the first rod to be bendable in the horizontal direction (L, R). A thread guard member which is capable of protrusion and storage is provided in the first rod, while a lever which can select the bending direction of the first rod in response to the situation of employment by an operator is provided in the second rod. Due to this ligative suturer, the operator can regularly bend the first rod toward him whether he handles the suturer with his left or right hand.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: September 2, 1997
    Assignees: Takamasa Onuki, Masayoshi Yokoyama, Sugan Co., Ltd.
    Inventors: Takamasa Onuki, Masayoshi Yokoyama, Tetsuya Yamamoto