CN2071949U - Facial nerve exploration instrument - Google Patents
Facial nerve exploration instrument Download PDFInfo
- Publication number
- CN2071949U CN2071949U CN 89208719 CN89208719U CN2071949U CN 2071949 U CN2071949 U CN 2071949U CN 89208719 CN89208719 CN 89208719 CN 89208719 U CN89208719 U CN 89208719U CN 2071949 U CN2071949 U CN 2071949U
- Authority
- CN
- China
- Prior art keywords
- constitute
- modulation signal
- frequency
- utility
- pulse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 210000000256 facial nerve Anatomy 0.000 title description 2
- 239000003990 capacitor Substances 0.000 claims 1
- 210000005036 nerve Anatomy 0.000 abstract description 7
- 230000001953 sensory effect Effects 0.000 abstract description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 210000000214 mouth Anatomy 0.000 abstract 1
- 208000027232 peripheral nervous system disease Diseases 0.000 abstract 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001097 facial muscle Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 230000001537 neural effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model relates to an electronic instrument for oral and maxillofacial surgery.
The utility model discloses constitute low frequency pulse generator and modulation signal generator respectively by two "555" time base circuits, transistor and switching transformer constitute the voltage booster, and rectifier tube and resistance-capacitance element constitute the demodulator. The low-frequency pulse and the modulation signal are modulated, amplified, boosted and demodulated to generate a pulse signal with adjustable output frequency, amplitude and current intensity, and the pulse signal stimulates the nerve of a patient to cause reaction. The detector is safe and reliable, and is convenient to use and carry. Can distinguish and accurately position the motor and sensory nerves of the oral cavity and the maxillofacial region, and can also be used for diagnosing peripheral nerve diseases and the like.
Description
This utility model is a kind of Oral and Maxillofacial Surgery operation electronic machine.
When operative doctor carries out the oromaxillo-facial region operation usually, only, seek nerve trunk or its branch, have bigger subjectivity by vascular forceps and tweezers with dissecting knowledge and experience.The situation of damaging important nerve because of lacking experience happens occasionally, and the patient's facial muscle that cause that have are paralysed all the life.
The objective of the invention is for surgical doctor provides a kind of electronic machine that is used to judge function of nervous system and distribution, to reduce the possibility of the important nerve of damage in the operation to greatest extent.
The principle of this searcher as shown in drawings.Fig. 1 is an electrical schematic diagram.Power supply E is a low-voltage DC.Constitute low-frequency pulse producer by two " 555 " time base circuits (1), produce 1～3Hz square wave.K
1As frequency inverted.Luminous tube LED
1Show with working frequency." 555 " time base circuit (2) constitutes modulation signal generator, produces the above modulating frequency of 20KHz, and the output waveform of two " 555 " (1) is modulated.Audion BG and switch transformer BT constitute voltage lifting mechanism, and the signal after the modulation is boosted.D
4, D
5, C
7And R
12Constitute demodulator, the modulation signal after boosting is carried out demodulation.K
2Select and the intensity indication as intensity.W
1In order to regulate the output current size.The output current of " D " point is by detecting the most advanced and sophisticated position that need measure that directly is added to of head.
Fig. 2 is an oscillogram.The waveform of " A ", " B ", " C ", " D " each point in the difference presentation graphs 1.
During operation, negative pole is exported the metal polar cushion in patients back, turn on the power switch K
1Place the frequency shelves (as being used for nervus motorius mensuration selection 1Hz) that need, K
2Place the intensity shelves that need.Patient's hands is held and is detected head, the position that most advanced and sophisticated contact will be measured.If nervus motorius, then the muscle of its domination can produce the each second of shake once; If sensory nerve, patient can feel the slight twinge in certain gap, position.If not it is neural, then reactionless.
This searcher can to the motion of oromaxillo-facial region and sensory nerve be distinguished and accurate location, also can be used for the diagnosis of peripheral nervous illness etc.
Claims (2)
1, a kind of nervus facialis searcher is characterized in that: constitute low-frequency pulse producer and modulation signal generator respectively by two " 555 " time base circuit, transistor and switch transformer constitute voltage lifting mechanism, and transistor and Resistor-Capacitor Unit constitute demodulator.
2, searcher as claimed in claim 1 is characterized in that: detecting an output services pulse frequency is 1-3Hz, and stimulus intensity is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89208719 CN2071949U (en) | 1989-06-19 | 1989-06-19 | Facial nerve exploration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89208719 CN2071949U (en) | 1989-06-19 | 1989-06-19 | Facial nerve exploration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2071949U true CN2071949U (en) | 1991-02-27 |
Family
ID=4865358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89208719 Withdrawn CN2071949U (en) | 1989-06-19 | 1989-06-19 | Facial nerve exploration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2071949U (en) |
-
1989
- 1989-06-19 CN CN 89208719 patent/CN2071949U/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |