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Apparatus for positioning surgical instrument

A surgical operation and instrument technology, which is applied in the directions of stereotaxic surgical instruments, surgical robots, and operations, can solve the problems of inaccurate positioning of instruments, endanger the success of surgical procedures, and time-consuming, and achieve the effect of reducing the requirements for precise positioning.

Inactive Publication Date: 2006-08-02
于尔根·瓦尔堡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

this can be time consuming
But failure to recalibrate when needed can lead to inaccurate instrument positioning that can jeopardize the success of the surgical procedure

Method used

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  • Apparatus for positioning surgical instrument
  • Apparatus for positioning surgical instrument
  • Apparatus for positioning surgical instrument

Examples

Experimental program
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Embodiment Construction

[0029] Referring to the drawings, FIG. 1 is a schematic representation of an apparatus 2 that may be used to position a surgical instrument 4 . The device comprises a computer 5 and a robot control system 6 which can receive instructions generated by the computer to move the apparatus. The control system includes a robotic arm (or other robotic system) 8 having a mounting plate 10 at the end on which the instrument 4 is mounted. The robotic arm 8 is fixed to a stationary base 9 of the control system. The instructions to move the instrument are interpreted by the robotic control system and cause movement of the instrumented robotic arm relative to the stationary base 9 . Preferably, said robot arm has at least three joints, more preferably six joints, in order to allow sufficient freedom of movement of said assembly plate 10 . Such general robot control systems are known, see eg US-6033415 and WO-98 / 27877.

[0030] The robot arm has an instrument sensor 12 on its mounting pl...

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PUM

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Abstract

Apparatus for positioning a surgical instrument during a surgical orthopaedic procedure relative to the coordinate system of the apparatus, comprises a surgical instrument and a robotic control system for moving the surgical instrument within the apparatus coordinate system according to program instructions. An instrument sensor is fixed relative to the instrument to indicate the true position of the instrument within the apparatus coordinate system, and a reference sensor is then fixed to a patient's bone to indicate the position of the patient's bone within the apparatus coordinate system. A detector for monitoring the positions of the instrument sensor and the reference sensor, and a signal processor receives position signals from the detector, and generates a desired position signal to the robotic control system to position the surgical instrument at a desired location relative to the reference sensor, by a process which involves minimising the difference between the true position of the instrument and the said desired location.

Description

technical field [0001] The invention relates to a device for positioning surgical instruments during orthopedic surgery. Background technique [0002] WO-A-98 / 27887 discloses a device for positioning a surgical instrument which utilizes a robot which moves the surgical instrument in the coordinate system of the device according to instructions from a control computer . The device includes a sensor in the form of a manually movable sensor arm, or in the form of a remote receiver (for example, in the form of an optical signal receiver, which receives an optical signal from a light-emitting diode), which can be used to determine coordinate system of the device, and within that coordinate system locate the patient's bone for which treatment is to be performed. Determining a coordinate system in this manner may involve positioning marks or anatomical features on the patient's bones. For example, a sensor comprising a manually movable arm can be moved to make contact with marke...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B19/00B25J13/08
CPCA61B19/20A61B19/2203A61B19/5244A61B2019/5255A61B2019/5272A61B34/20A61B2034/2055A61B2034/2072A61B34/30A61B90/10A61B2090/363
Inventor J·瓦尔堡
Owner 于尔根·瓦尔堡
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