CN102670199B - Opening navigator detection circuit for spinal surgery - Google Patents
Opening navigator detection circuit for spinal surgery Download PDFInfo
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- CN102670199B CN102670199B CN201210135325.1A CN201210135325A CN102670199B CN 102670199 B CN102670199 B CN 102670199B CN 201210135325 A CN201210135325 A CN 201210135325A CN 102670199 B CN102670199 B CN 102670199B
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Abstract
The invention relates to an opening navigator detection circuit for a spinal surgery. The opening navigator detection circuit comprises a navigator probe, an excitation voltage module, an information processing module and an embedded control system, wherein the excitation voltage module outputs excitation voltage to act on two electrodes of the navigator probe; the two electrodes of the navigator probe output current signals and then output voltage signals through a current to voltage converter, and the voltage signals are processed through a preprocessing circuit, are then sampled through an analog to digital converter and are finally input to the embedded control system to be processed; and the embedded control system analyzes the size of input data and respectively compares the input data with pre-stored current value corresponding data of the navigator probe positioned in vertebra and spinal fluid, so that the position of the navigator probe is indicated. The opening navigator detection circuit navigates opening of the spinal surgery, and the injury caused by misplacement of vertebral screws is avoided. The invention also relates to an opening navigation method for the spinal surgery.
Description
Technical field
The present invention relates to medical instruments field, be specifically related to a kind of perforate omniselector testing circuit and method for spinal operation.
Background technology
At present, pedicle screw fixation system in treatment method has a wide range of applications at spinal surgery, and can the key of pedicle internal fixation operation success or failure be exactly screw pedicle is screwed into vertebral body.For assurance screw, implant safely, need the location of medical assistance apparatus to infer, is mostly feel and the experiences that rely on doctor.This mode screw misplace rate is high, may cause spinal cord and neural damage, thereby cause patient to paralyse or functional disorder.
Chinese patent 2010101145546, patentee is Nanjing Aero-Space University, discloses a kind of near-infrared positioning navigation device of implanting for pedicle nail.But a kind of spinal operation simple as the present invention has no report with perforate omniselector testing circuit and method.
Summary of the invention
The object of the invention is, propose to solve the device of the channel location problem in spinal operation pedicle screw implantation process.
For achieving the above object, the technical scheme that the present invention takes is: perforate omniselector testing circuit for a kind of spinal operation, comprise omniselector probe, driving voltage module, message processing module, embedded control system, omniselector probe comprises two electrodes, message processing module comprises current-to-voltage convertor, pre-process circuit, A/D converter; Driving voltage module output drive voltage acts on two electrodes of omniselector probe; Two electrode output current signals of omniselector probe, through current-to-voltage convertor output voltage signal,,, are finally inputted embedded control system and are processed by A/D converter sampling voltage signal impedance transformation, amplification, Filtering Processing through pre-process circuit; The size of embedded control system analysis input data, and it and the current value corresponding data that the omniselector probe prestoring is arranged in vertebra, spinal fluid are made comparisons respectively, thereby described omniselector probe present position indicated.
The present invention has following beneficial effect: perforate omniselector testing circuit for a kind of spinal operation is originally provided, and to spinal operation, perforate is navigated, and avoids vertebra root screw misplace to cause damage.
Another object of the present invention is to propose to solve the method for the channel location problem in spinal operation pedicle screw implantation process.
For achieving the above object, the technical scheme that the present invention takes is: a kind of spinal operation perforate air navigation aid, comprises the following steps: output drive voltage acts on two electrodes of omniselector probe; Current signal conversion output voltage signal to two electrode outputs of omniselector probe, and make impedance transformation, amplification, Filtering Processing, by A/D conversion sampling; A/D is changed to the current value corresponding data that sampled data and omniselector probe is arranged in vertebra, spinal fluid and make comparisons respectively, thus judgement omniselector probe present position.
The beneficial effect of technique scheme is: a kind of spinal operation perforate air navigation aid is provided, and to spinal operation, perforate is navigated, and avoids vertebra root screw misplace to cause damage.
Accompanying drawing explanation
Fig. 1 is the structural representation of perforate omniselector testing circuit for a kind of spinal operation.
Fig. 2 is the message processing module schematic diagram of perforate omniselector testing circuit for a kind of spinal operation.
Fig. 3 is the probe circuit connection diagram of perforate omniselector testing circuit for a kind of spinal operation.
The specific embodiment
Below in conjunction with embodiment and with reference to accompanying drawing, the invention will be further described.
embodiment 1
The present embodiment is realized perforate omniselector testing circuit for a kind of spinal operation.
The structural representation of perforate omniselector testing circuit for a kind of spinal operation as shown in Figure 1.Omniselector probe 1 is comprised of the contre electrode at head and the insulating tape between surround electrode, and the tissue between two electrodes is served as conducting medium.According to the electrical conductivity of spinal fluid, be obviously greater than the feature of the electrical conductivity of vertebra.Current value range when two electrodes that are first prestored into omniselector probe 1 in embedded control system 3 are all positioned at vertebra and contre electrode and are positioned at spinal fluid.Embedded control system 3 is provided and stablizes lasting driving voltage to omniselector probe 1 by D/A converter 5.When omniselector probe 1 enters after human body, omniselector probe 1 is in real time by the current information afferent message processing module 2 recording.Message processing module 2 converts information of voltage to embedded control system 3 tractable information.Embedded control system 3 is compared current information now by A/D converter 9 with the current value range prestoring, analyze the now position in human body of omniselector probe 1, embedded control system 3 sends control command to audio alert module 4, alarm is made response, the prompting omniselector 1 current position of popping one's head in.
The message processing module schematic diagram of perforate omniselector testing circuit for a kind of spinal operation as shown in Figure 2.Omniselector probe 1 current information collecting can not be embedded into formula control system 3 and directly process.Analog current input 6 converts current information to voltage signal by current-to-voltage convertor 7 by current signal.Because the voltage signal intensity after conversion is little, impedance is low, be subject to noise jamming, need impedance transformation, amplification, Filtering Processing through pre-process circuit 8, by A/D converter 9, convert analog voltage to digital voltage that embedded control system 3 can reception & disposal.
The omniselector probe circuit connection diagram of perforate omniselector testing circuit for a kind of spinal operation as shown in Figure 3.If the probe of figure omniselector is by contre electrode 10, surround electrode 11, dielectric 12 forms.The driving voltage 13 being produced through D/A converter 5 by embedded control system 3 is carried on contre electrode 10 and surround electrode 11.Current-to-voltage convertor 7 gathers and is carried in the electric current that between two electrodes, the driving voltage in tissue produces, for subsequent treatment.
embodiment 2
The present embodiment is realized a kind of spinal operation perforate air navigation aid, its hardware circuit based on realizing can be the testing circuit described in embodiment 1, also can be other circuit that build according to this method, the circuit or the system that for example based on computer or digital signal processor, build.
Use a perforate air navigation aid, comprise the following steps:
Step 1: output drive voltage acts on two electrodes of omniselector probe;
Step 2: current signal conversion output voltage signal to two electrode outputs of omniselector probe, and make impedance transformation, amplification, Filtering Processing, by A/D conversion sampling;
Step 3: A/D is changed to the current value corresponding data that sampled data and omniselector probe is arranged in vertebra, spinal fluid and make comparisons respectively, thus judgement omniselector probe present position.
Step 4: according to the prompting of sounding of omniselector probe present position.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvement and supplement, these improvement and supplement and also should be considered as protection scope of the present invention.
Claims (3)
1. a perforate omniselector testing circuit for spinal operation, is characterized in that:
Comprise omniselector probe, driving voltage module, message processing module, embedded control system, described omniselector probe comprises two electrodes, described message processing module comprises current-to-voltage convertor, pre-process circuit, A/D converter;
Described driving voltage module output drive voltage acts on two electrodes of described omniselector probe;
Two electrode output current signals of described omniselector probe are through described current-to-voltage convertor output voltage signal, through described pre-process circuit by described voltage signal impedance transformation, amplification, Filtering Processing, by A/D converter sampling, finally input embedded control system and process;
The size of described embedded control system analysis input data, and it and the current value corresponding data that the described omniselector probe prestoring is arranged in vertebra, spinal fluid are made comparisons respectively, thereby described omniselector probe present position indicated.
2. testing circuit according to claim 1, is characterized in that: described driving voltage module is D/A converter, and described embedded control system is controlled the driving voltage that described D/A converter provides two electrode work of described omniselector probe.
3. testing circuit according to claim 1, is characterized in that: comprise audio alert module, described embedded control system is controlled audio alert module according to described omniselector probe present position and provided auditory tone cues.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210135325.1A CN102670199B (en) | 2012-05-04 | 2012-05-04 | Opening navigator detection circuit for spinal surgery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210135325.1A CN102670199B (en) | 2012-05-04 | 2012-05-04 | Opening navigator detection circuit for spinal surgery |
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| CN102670199A CN102670199A (en) | 2012-09-19 |
| CN102670199B true CN102670199B (en) | 2014-02-05 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103750895B (en) * | 2014-01-07 | 2016-01-13 | 北京航空航天大学 | The full visual angle vertebral pedicle operation assistant director of a film or play based on bio-electrical impedance navigates device and method |
| CN105030334A (en) * | 2015-06-10 | 2015-11-11 | 中国人民解放军第二军医大学 | Opening navigation detection system for spinal surgeries |
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| CN101791246A (en) * | 2010-02-26 | 2010-08-04 | 南京航空航天大学 | Near-infrared locating and guiding device for implantation of pedicles nail |
| CN201562015U (en) * | 2009-12-15 | 2010-08-25 | 王智运 | Biological hard tissue puncture and electric impedance detector |
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| CN202751391U (en) * | 2012-05-04 | 2013-02-27 | 上海朗信医学科技有限公司 | Trepanning navigator detection circuit for spinal surgery |
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| JPH1033631A (en) * | 1996-07-25 | 1998-02-10 | Yuusu Eng Kk | Meridian point detecting device |
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| CN101917901A (en) * | 2007-12-31 | 2010-12-15 | 卡佳·帕西尔塔 | Determining the position of a needle |
| CN201562015U (en) * | 2009-12-15 | 2010-08-25 | 王智运 | Biological hard tissue puncture and electric impedance detector |
| CN101791246A (en) * | 2010-02-26 | 2010-08-04 | 南京航空航天大学 | Near-infrared locating and guiding device for implantation of pedicles nail |
| CN202751391U (en) * | 2012-05-04 | 2013-02-27 | 上海朗信医学科技有限公司 | Trepanning navigator detection circuit for spinal surgery |
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| JP特开平10-33631A 1998.02.10 |
| 在体骨组织穿刺生物电学信息采集***样机的研制与应用;王智运等;《中国医疗器械杂志》;20101231;第34卷(第3期);第164-166页 * |
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