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Guiding tool of operation

A technology of surgical navigation and tools, applied in surgical navigation systems, surgery, stereotaxic surgical instruments, etc., can solve problems affecting the detection accuracy of surgical tools by the optical positioning system, vibration of difficult hand-held surgical tools, positioning errors of surgical tools, etc. Achieve the effects of strong movement intuition, shortening the postoperative recovery period, and stabilizing the instantaneous transmission ratio

Inactive Publication Date: 2005-12-28
FUDAN UNIV
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Problems solved by technology

This phenomenon directly affects the detection accuracy of the surgical tool by the optical positioning system, resulting in positioning and guidance errors of the surgical tool during the operation, thus affecting the accuracy of the entire operation
[0005] In short, traditional surgical robots have high positioning accuracy and processing accuracy, but are bulky and not flexible enough
The current surgical navigation system is obviously superior to surgical robots in terms of flexibility and safety, and has high operability, but it has certain defects in the accuracy of surgery, especially it is difficult to solve the shaking of hand-held surgical tools question

Method used

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Embodiment Construction

[0021] Such as figure 1 As shown, the reference numeral 20 (within the dotted line) is the surgical navigation tool of the present invention, and its implementation cannot be separated from the optical positioning tracking system 19, the optical tracking marker 21, the clamping tool 23, and the surgical prosthesis. Taking the intramedullary nail 22 implantation operation as an example, it has a certain bending deformation during insertion into the curved bone marrow cavity of the patient, which causes the shape deformation and position shift of the locking nail hole at the distal end of the intramedullary nail, resulting in the locking nail Insertion is very difficult. With the help of the optical positioning tracking system 19 and the X-ray image of the mobile C-arm in the operating room, the positional relationship of the keyhole at the distal end of the intramedullary nail relative to the navigation tool 20 can be determined, and the ideal position of the guide plate at the...

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Abstract

A surgical navigation tool for the computer aided surgical navigation system features that on the basis that the optical locating and tracking system is used to find the space position of surgical navigation tool, a set of five-freedom joint-type manipulator is designed. Said manipulator has a 4-class drive mechanism with self-locking worm-gear set, which has stable instantaneous drive ratio and high drive accuracy, so making the pilot template as its final class reach the surgical target position precisely.

Description

technical field [0001] The invention belongs to the technical field of computer surgical navigation, and in particular relates to a surgical guidance tool in a computer-aided surgical navigation system. Background technique [0002] The current surgical navigation system can be divided into active structure and passive structure according to the interaction mode of surgical tools and surgical environment. The active structure mainly refers to the surgical robot, which can perform precise surgical operations according to the surgical plan without the manual intervention of doctors. However, surgical robots are mostly improved from industrial robots. Their high strength and rigidity requirements make their structures too large compared to the surgical space, and it is often difficult to meet the complexity requirements of surgery in terms of flexibility. There are sufficient security measures to protect doctors and patients from possible misuse risks. [0003] At present, mo...

Claims

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Application Information

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IPC IPC(8): A61B34/20A61B90/11
Inventor 张文强
Owner FUDAN UNIV
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