Puncture instrument for positioning center of oval foramen of cranial base
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A technology of center positioning and foramen ovale, applied in the field of medical devices, can solve the problems of poor positioning accuracy of the foramen ovale, small adjustment range of the needle direction, long treatment time, etc., so as to make up for the defects of the positioning method, avoid blindness, and improve the The effect of the success rate of the treatment
Inactive Publication Date: 2014-07-23
GUANGXI MEDICAL UNIVERSITY
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However, the positioning accuracy of the foramen ovale is poor, and it cannot be directly read, and the adjustment range of the needle direction during puncture is small, resulting in difficult puncture, long treatment time, and poor treatment effect have become a major technical problem
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[0023] Related data of skull base measured under CT machine:
[0024] A 2mm thin-slice axial scan of the foramen ovale at the base of the skull was performed with spiral CT, and measured on the CT image passing through the foramen ovale figure 1 The distance shown: AB, CD-the distance from the foramen ovale to the proximal body surface, BO, CO-the distance from the foramen ovale to the centerline.
[0025] Calculate the data that needs to be adjusted in the adjustable part of the piercer according to the formula:
[0026] Such as figure 2 , image 3 as shown,
[0027] The plane distance BC between the two foramen ovale and the distance OC between the foramen ovale and the center line
[0028] The distance CD from the foramen ovale to the proximal body surface The inner diameter of the main body frame is set to L
[0029] Screw-in length of the measuring rod MN Width of the fixing threaded ring NP
[0030] Arc radius R of the goniometer Width PQ of the goniometer
[003...
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Abstract
The invention provides a puncture instrument device for positioning the center of an oval foramen of a cranial base. The puncture instrument comprises a main frame, a sliding block, sliding block threaded holes, a sliding groove, fixing bolts, an adjustable fixing rod, an angle gauge, a fixing threaded ring, a measurement rod, a protractor, a protractor inserting groove and a head support. The puncture instrument for positioning the center of the oval foramen of the cranial base is made of high-quality acrylic materials, has remarkable advantages, can be used in a CT scanner, and does not affect diagnosis or treatment; meanwhile, a target spot can be clearly positioned through the measurement rod and the angle gauge, so that an objective and digital basis is provided for the positioning process, puncturing blindness is avoided, puncturing precision is improved, and the treatment success rate is increased, and the occurrence rate of complications is reduced; the puncture instrument is simple in structure, convenient to use, practical, high in work efficiency, capable of overcoming the detect of a traditional positioning method, and worth clinically popularizing and applying.
Description
technical field [0001] The invention belongs to a medical device, which is used for the auxiliary positioning of the puncture operation of the foramen ovale of the human skull base when the interventional treatment of trigeminal neuralgia is carried out clinically. Background technique [0002] Trigeminal neuralgia is a common clinical disease syndrome, and facial puncture treatment is a safe and effective method. However, the positioning accuracy of the foramen ovale is poor, and it cannot be directly read, and the adjustment range of the needle direction during puncture is small, resulting in difficult puncture, long treatment time, and poor treatment effect, which has become a major technical problem. This instrument can be used to help clinicians improve the accuracy of foramen ovale puncture under the guidance of CT. Compared with the traditional anterior approach blind puncture method, the success rate is significantly increased, and the time required for puncture is r...
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