Title:
SCREW CLAMPING APPARATUS FOR ELEMENT/DEVICE FOR FIXING OR IMPLANTING MEMBER OF BONE
Document Type and Number:
Japanese Patent JPH04253854
Kind Code:
A
Abstract:
PURPOSE: To release a thread fastener at a clearly set torque value. CONSTITUTION: This thread fastener 101 fixes an element 108 to a planted member 103 fixed to a bone in particular, it can be released by set torque, and it is constituted of an electric motor, a speed reduction unit, and a thread fastening portion. The energy feed circuit of the electric motor can be interrupted at a fixed current value because the torque value is set. The cutting/ rotating energy at the rotating portion of the thread fastener 101 after cutoff generates the thread fastening moment located at the optimum point or desired point or near them on a specific moment curve for fastening, or an interrupting portion cutting the fastening function at the desired point or near it on the specific moment curve is used.
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Inventors:
RENNARUTO KAARUSON
Application Number:
JP7237891A
Publication Date:
September 09, 1992
Filing Date:
March 11, 1991
Export Citation:
Assignee:
NOBELPHARMA AB (SE)
International Classes:
A61B17/88; A61C8/00; A61C13/00; B25B23/14; B25B23/147; B25B23/151; A61C1/18; (IPC1-7): A61C8/00; A61C13/00
Attorney, Agent or Firm:
Mitsuo Adachi (1 outside)