Double-source positioner

Abstract

The invention discloses a double-source positioner. The double-source positioner mainly comprises a magnetic source fixing rod and two magnetic sources; the magnetic sources are fixed to the magnetic source fixing rod; and the two magnetic sources are fixed to different positions of the magnetic source fixing rod, and the magnetic field directions of the two magnetic sources are arranged in a crossed mode. During an operation, three-dimensional positioning can be provided for drilling a lock nail hole in a locked intramedullary nail implanted into a body, the drilling accuracy and the success rate of the operation can be improved, and the operation time is shortened.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a dual-source locator. Background technique [0002] At present, in the treatment of patients with tubular fractures, interlocking intramedullary nail internal fixation technology is widely used clinically, and the installation of the distal locking nail of the intramedullary nail is the key link of this technology. The position of the distal nail hole of the intramedullary nail The accuracy of positioning directly affects the difficulty and quality of surgery. There are several ways to target and locate the distal nail hole of the intramedullary nail that are commonly used in clinical practice. A large amount of radiation is produced, causing harm to medical staff and patients. The 2nd, adopt the position-limiting aiming technology of locating bar, the patent No. 02267978.2 " with locking intramedullary nail far-end nail hole locating device " designed by the inven...

AI Technical Summary

Problems solved by technology

There are several ways to target and locate the distal nail hole of the intramedullary nail that are commonly used in clinical practice. Generate a large amount of radiation, causing harm to medical staff and patients

The 2nd, adopt the position-limiting aiming technology of locating bar, the patent No. 02267978.2 " with locking intramedullary nail far-end nail hole locating device " designed by the inventor more typically, its structural characteristic is to install an additional on the locating bar Although the limit device that limits the swing of the intramedullary nail plays a certain role in aiming, it needs to add a drill hole in the bone tissue, which not only requires many steps, but also causes additional trauma to the patient.

The third is to adopt magnetic force aiming and positioning technology. The patent No. 200420039024.X designed by the inventor is "automatic indicator for locking intramedullary nail distal nail hole". A magnetic aiming indicator is installed in the positioning hole of the intramedullary nail, and it cooperates with the probe with a magnet inserted in the intramedullary nail for aiming and positioning. This technology improves the accuracy of aiming at the distal nail hole of the locking intramedullary nail, but Its shortcoming is that it has the defect that when the distal hole of the intramedullary nail is provided with vertical, horizontal and angled oblique holes at the same time, the oblique holes cannot be accurately positioned.

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