CN109431462A - A method of increasing OCT equipment creepage distance and electric clearance - Google Patents
A method of increasing OCT equipment creepage distance and electric clearance Download PDFInfo
- Publication number
- CN109431462A CN109431462A CN201811208968.8A CN201811208968A CN109431462A CN 109431462 A CN109431462 A CN 109431462A CN 201811208968 A CN201811208968 A CN 201811208968A CN 109431462 A CN109431462 A CN 109431462A
- Authority
- CN
- China
- Prior art keywords
- distance
- increasing
- equipment
- creepage distance
- oct
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0062—Arrangements for scanning
- A61B5/0066—Optical coherence imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0084—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for introduction into the body, e.g. by catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/04—Constructional details of apparatus
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Endoscopes (AREA)
Abstract
A method of increasing OCT equipment creepage distance and electric clearance, it is characterized in that the face of forgetting about it of upper and lower plastic casing is on the one hand changed to upper and lower occlusion structure by flat mouth to increase creepage distance, on the other hand increase the distance between sensitive circuit and shell, increase electrical gap, when preventing from doing 15kV atmospherical discharges.High voltage penetrates the gap of plastic shell, into inside equipment, punctures sensitive circuit.The influence that the present invention reduces it to internal circuit by adding place's high-voltage electricity travel distance, the antistatic property of equipment is improved by the two kinds of measures in the distance between border between increasing sensitive circuit and shell simultaneously, it is simple and reliable with method, strong operability, advantage at low cost, the atmospherical discharges for making improved OCT equipment be resistant to 15 kilovolts meet the antistatic standard regulation of Medical Devices.
Description
Technical field
The present invention relates to a kind of electrical technology, especially a kind of antistatic technique, specifically a kind of increase OCT equipment
The method of creepage distance and electric clearance.
Background technique
Currently, intravascular computed tomography (SPECT) system cooperation imaging catheter is designed for the imaging to the blood vessel of diameter > 1.5mm,
It realizes the precise measurement to lumen diameter, area, the imaging to vascular wall and blood vessel implant structure, and then distinguishes patchiness
Matter and the evaluation for being used for blood vessel implant (bracket, filter, spring ring etc.).
Intravascular computed tomography (SPECT) system is based on intravascular optical coherence tomography (Optical Coherence
Tomography, OCT) technology combination imaging catheter system, OCT technology be used as after intravascular ultrasound (Intravascular
Ultrasound, IVUS) imaging technique in the new coronary artery of one kind that occurs afterwards, compared with IVUS, OCT high resolution ratio
Make it in evaluation vulnerable plaque, instruct stenter to implant, especially in acute coronary syndrome (Acute Coronary
Syndrome, ACS) in diagnosis and treatment using of increasing concern.
2011, to IVUS in American Society of Cardiology/American Heart Association (ACCF/AHA) Percutantnoeus coronary intervention guide
The recommendation etc. applied in percutaneous coronary intervention (pci) (Percutaneous Coronary Intervention, PCI)
Grade is IIa, and to the recommendation grade of OCT because evidence-based medical deficiency is not yet established.2012, CLI-OPCI studies have shown that
Compared with the PCI treatment of simple radiography guidance, the PCI treatment under OCT guidance can significantly improve patient's prognosis.Then, 2013
Year European Society of Cardiology is about in Stable coronary heart disease administration guide, and OCT is for assessment lesion characteristics and optimization stenter to implant
Process is classified as IIb grades of recommendations (level of evidence is B grades), and overall evidence level is equal to IVUS.2014, heart of Europe disease
In the myocardium revascularization guide of meeting/Europe cardiothoracic surgery association (ESC/EACTS), recommendation grade of the OCT to optimization PCI is promoted
Recommend to the IIa grade being equal with IVUS.The ILUMIEN I that delivers for 2015 is research shows that PCI is preoperative and/or postoperative row OCT inspection
Look into the strategies of interventional treatment that can influence patient.ILUMIEN II result of study shows that OCT is not inferior in terms of instructing stent expansion
IVUS.With the continuous renewal of OCT technology and the announcement of more perspective study data, OCT is led in coronary intervention
Status in domain will further be promoted.
OCT equipment is a kind of precision instrument, and according to the relevant regulations of medical instrument, equipment must carry out electrostatic before factory
Test, on the one hand will prevent extraneous static from hindering and damaging to internal unit, prevent the running precision for influencing equipment, on the other hand
Also to prevent influence of the electrostatic generated in equipment use process to medical environment, prevent it to the interference of other precision equipments and
It destroys.And as far as the applicant is aware, current OCT equipment does not fully take into account electrostatic influence in the design phase, without preferable yet
Method solve the accumulation problems of electrostatic charge, it is unqualified to frequently result in electrostatic detection, especially puts carrying out 15kV air
When electric test, the modes such as metal connector can be connected by copper sheet, copper strips are solved, but for nonconducting plastic casing
For, upper-lower casing seam crossing will form high pressure electric channel, and this high-voltage electricity, which can enter inside equipment, rushes sensitive circuit
It hits, circuit is caused to puncture, this phenomenon must be overcome.
Summary of the invention
The purpose of the present invention is high-voltage electricity easily occurs for the existing non-conductive faying face of OCT equipment to climb electricity inside electrical breakdown
The problem of road, invents a kind of plus OCT equipment creepage distance and electric clearance method., electrical breakdown probability is climbed to reduce, guarantee is set
Standby safe operation.
The technical scheme is that
A method of increasing OCT equipment creepage distance and electric clearance, it is characterized in that on the one hand by the drawing of upper and lower plastic casing
Stopping surface by flat mouth be changed to up and down occlusion structure to increase creepage distance, on the other hand increase between sensitive circuit and shell away from
From increasing electrical gap, when preventing from doing 15kV atmospherical discharges.High voltage penetrates the gap of plastic shell, into inside equipment, hits
Wear sensitive circuit.
Notch of the occlusion structure by upper casing and lower casing along wall thickness direction forms.
The distance of the notch is greater than the wall thickness of upper casing and lower casing.
Beneficial effects of the present invention:
The influence that the present invention reduces it to internal circuit by adding place's high-voltage electricity travel distance, while by increasing sensitive circuit
The measure of two kinds of the distance between border improves the antistatic property of equipment between shell, has the method simple and reliable, strong operability,
Advantage at low cost, the atmospherical discharges for making improved OCT equipment be resistant to 15 kilovolts meet the antistatic standard of Medical Devices
Regulation.
Detailed description of the invention
Fig. 1 is the occlusion structure schematic diagram of increase creepage distance of the invention.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1.
A method of increasing OCT equipment creepage distance and electric clearance, upper and lower plastic casing is on the one hand forgotten about it into face
Occlusion structure up and down is changed to by flat mouth on the other hand to increase the distance between sensitive circuit and shell to increase creepage distance, increase
It is powered on air gap, when preventing from doing 15kV atmospherical discharges.High voltage penetrates the gap of plastic shell, into inside equipment, punctures quick
Inductive circuit.By both the above mode, a possibility that increasing electric clearance and creepage distance, reduce electrostatic breakdown.Described stings
Notch of the structure by upper casing and lower casing along wall thickness direction is closed to form.As shown in Figure 1, the distance of the notch is greater than upper casing and lower casing
Wall thickness.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
Claims (3)
1. a kind of method for increasing OCT equipment creepage distance and electric clearance, it is characterized in that on the one hand by upper and lower plastic casing
Forget about it face by flat mouth be changed to up and down occlusion structure to increase creepage distance, on the other hand increase between sensitive circuit and shell away from
From increasing electrical gap, when preventing from doing 15kV atmospherical discharges.High voltage penetrates the gap of plastic shell, into inside equipment, hits
Wear sensitive circuit.
2. according to the method described in claim 1, it is characterized in that the occlusion structure is by upper casing and lower casing along wall thickness direction
Notch composition.
3. according to the method described in claim 2, it is characterized in that the distance of the notch is greater than the wall thickness of upper casing and lower casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811208968.8A CN109431462A (en) | 2018-10-17 | 2018-10-17 | A method of increasing OCT equipment creepage distance and electric clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811208968.8A CN109431462A (en) | 2018-10-17 | 2018-10-17 | A method of increasing OCT equipment creepage distance and electric clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109431462A true CN109431462A (en) | 2019-03-08 |
Family
ID=65547088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811208968.8A Pending CN109431462A (en) | 2018-10-17 | 2018-10-17 | A method of increasing OCT equipment creepage distance and electric clearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109431462A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2595972A (en) * | 2020-05-19 | 2021-12-15 | Smith & Nephew | Patient protection from unsafe electric current in sensor integrated dressings and systems |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020035776A1 (en) * | 2000-09-21 | 2002-03-28 | Paul Siu | Sleeved case design for adjustably increasing creepage distance |
| CN101599350A (en) * | 2008-06-04 | 2009-12-09 | 林渊源 | Novel high-frequency transformer skeleton |
| KR101046010B1 (en) * | 2003-07-31 | 2011-07-01 | 니혼앗짜쿠단시세이소 가부시키가이샤 | Connector and liquid crystal display using the same |
| CN104754929A (en) * | 2015-04-25 | 2015-07-01 | 永济新时速电机电器有限责任公司 | Composite shielding device for driving circuit |
| CN206005039U (en) * | 2016-08-02 | 2017-03-08 | 江苏斯菲尔电气股份有限公司 | The display header structure that a kind of band is renovated |
-
2018
- 2018-10-17 CN CN201811208968.8A patent/CN109431462A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020035776A1 (en) * | 2000-09-21 | 2002-03-28 | Paul Siu | Sleeved case design for adjustably increasing creepage distance |
| KR101046010B1 (en) * | 2003-07-31 | 2011-07-01 | 니혼앗짜쿠단시세이소 가부시키가이샤 | Connector and liquid crystal display using the same |
| CN101599350A (en) * | 2008-06-04 | 2009-12-09 | 林渊源 | Novel high-frequency transformer skeleton |
| CN104754929A (en) * | 2015-04-25 | 2015-07-01 | 永济新时速电机电器有限责任公司 | Composite shielding device for driving circuit |
| CN206005039U (en) * | 2016-08-02 | 2017-03-08 | 江苏斯菲尔电气股份有限公司 | The display header structure that a kind of band is renovated |
Non-Patent Citations (5)
| Title |
|---|
| 王伟等: "解析爬电距离和电气间隙的最新技术要求", 《光源与照明》 * |
| 肖志宽: "《煤矿电气基础》", 31 March 1991 * |
| 胡兴志等: "《机电安全工程》", 31 January 2016, 北京：国防工业出版社 * |
| 谢利涛等: "医用电气设备电气间隙和爬电距离能力验证分析", 《河南科技》 * |
| 郑虹等: "电子产品检测中电气间隙和爬电距离的确定", 《中国计量学院学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2595972A (en) * | 2020-05-19 | 2021-12-15 | Smith & Nephew | Patient protection from unsafe electric current in sensor integrated dressings and systems |
| GB2595972B (en) * | 2020-05-19 | 2024-09-04 | Smith & Nephew | Patient protection from unsafe electric current in sensor integrated dressings and systems |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Komatsu et al. | Regional myocardial wall thinning at multidetector computed tomography correlates to arrhythmogenic substrate in postinfarction ventricular tachycardia: assessment of structural and electrical substrate | |
| US6860851B2 (en) | Vulnerable plaque diagnosis and treatment | |
| US9381039B2 (en) | Filling methods and apparatus for implanted medical therapy delivery devices | |
| US20080287771A1 (en) | Surgical navigation system with electrostatic shield | |
| US20110034823A1 (en) | Lumen diameter and stent apposition sensing | |
| US20080294041A1 (en) | Devices, Systems and Methods for Determining Sizes of Vessels | |
| CA2995553C (en) | Epicardial access system & methods | |
| CN109431462A (en) | A method of increasing OCT equipment creepage distance and electric clearance | |
| Hamza et al. | Interference reduction in ECG signal acquisition: Ground electrode removal (case study) | |
| Demehri et al. | Volumetric quantification of type II endoleaks: an indicator for aneurysm sac growth following endovascular abdominal aortic aneurysm repair | |
| CN106662479A (en) | Capacitive liquid level measurement with differential out-of-phase channel drive to counteract human body capacitance | |
| DE102021116015A1 (en) | SENSOR CONTROLLED MECHANICAL SEAL | |
| US9693702B2 (en) | System and method of potential equalization monitoring for medical devices | |
| US20200253478A1 (en) | Method and apparatus for metal implant contact detection through capacitive measurements | |
| CN105877843A (en) | Navigation Of An Angioplasty Guidewire | |
| CN109413829A (en) | A method of reducing OCT equipment complete machine ground resistance | |
| CN109411913A (en) | A kind of connector reducing OCT equipment complete machine ground resistance | |
| Yu et al. | Characteristics in image integration system guiding catheter ablation of atrial fibrillation with a common ostium of inferior pulmonary veins | |
| CN208653760U (en) | A kind of photosensitive detection box of OCT equipment | |
| Pallas-Areny | Comments on “capacitive biopotential measurement for electrophysiological signal acquisition: a review” | |
| CN209102845U (en) | Medical insulation tester with safeguard function | |
| CN109222922A (en) | A method of improving the anti-level interference of OCT equipment sensitive circuit | |
| CN109068560A (en) | A method of improving the anti-radio-frequency radiation interference of electromagnetic field of OCT device display | |
| US11553854B2 (en) | Medical device with guidewire detection | |
| DE102020111411B4 (en) | CAPACITIVE VOLTAGE TESTER |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190308 |
|
| WD01 | Invention patent application deemed withdrawn after publication |