CN109387369B - MLC external driving measurement system of medical accelerator - Google Patents
MLC external driving measurement system of medical accelerator Download PDFInfo
- Publication number
- CN109387369B CN109387369B CN201710679201.2A CN201710679201A CN109387369B CN 109387369 B CN109387369 B CN 109387369B CN 201710679201 A CN201710679201 A CN 201710679201A CN 109387369 B CN109387369 B CN 109387369B
- Authority
- CN
- China
- Prior art keywords
- group
- sockets
- selection switch
- respectively connected
- switch
- 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.)
- Active
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000001959 radiotherapy Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000004881 tumor cell Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
The invention relates to an MLC external drive measurement system of a medical accelerator, which comprises a power module, two groups of multi-row sockets, a first change-over switch, a second change-over switch, a first selection switch and a second selection switch, wherein the first change-over switch and the second change-over switch are respectively connected with two ends of the power module, the first change-over switch corresponds to a first group of positive contacts and a second change-over switch corresponds to a second group of positive contacts and a second contact, the first group of positive contacts and the second contact are respectively connected with the first selection switch, the second group of positive contacts and the second contact are respectively connected with the second selection switch, the first selection switch and the second selection switch are respectively connected with two side jacks of the first group of multi-row sockets, and the first selection switch and the second selection switch are respectively connected with two side jacks of the second group of multi-row sockets. Compared with the prior art, the invention has the advantages of improving the efficiency during MLC maintenance, being applicable to multiple versions, realizing the driving of a single or single-row motor, carrying out power supply selection according to the situation, and the like.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an MLC external driving measurement system of a medical accelerator.
Background
In order to make the irradiation field maximally approximate to the shape of tumor, the medical electron linear accelerator is mostly equipped with multi-leaf collimators (MLC system for short), so as to achieve the goal of maximally killing tumor cells of normal tissues. Because MLC systems are more accurate and faster than lead-gear operating methods, current medical linacs equipped with MLC systems are becoming increasingly popular in medical institutions across the country. With the improvement of medical technology, the requirements on safety and reliability in radiotherapy are also higher and higher, and the maintenance of MLC is one of important links of quality control work of medical linac.
The MLC system is an additional device of the medical linear accelerator and consists of a hardware system and a software system. The hardware system is divided into a control computer and an MLC unit, the control computer sends out radiation field instructions, the MLC unit is used for generating radiation fields and is arranged on a collimator of an accelerator, the control system comprises an MLC driving part, a mechanical transmission system and a feedback control circuit, and the control system mainly comprises lead blades, screws, nuts and the like, the lead blades generally comprise 20 pairs, 40 pairs or 60 pairs of lead sheets with the thickness of 2-3 mm, each blade is provided with a micro motor, the micro motor can drive the blades to stretch and retract through a transmission device, and all the blades stretch and retract orderly, so that the MLC forms a specific shape. The connecting surfaces between adjacent blades are of concave-convex structures, and the structure is compact, the leakage-proof effect is good, and the like.
Because the existing special tool for Elekta is high in cost and inconvenient to carry when the MLC is maintained and the luminous point is replaced, the special tool cannot be popularized. In addition, the small machine head is detached in the maintenance process, the power is required to be cut off, one blade is required to extend into the center, and the small machine head is required to be withdrawn one by one after the reflector spots are maintained and replaced, so that the maintenance is complex and low in efficiency. The battery is used for driving, each blade is connected with wires, and the operation is performed twice, so that whether the driving system is good or not cannot be tested.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an MLC external driving measurement system of a medical accelerator.
The utility model provides an external drive measurement system of MLC of medical accelerator, the system include power module, first change over switch, second change over switch, first selector switch, second selector switch, first group multirow socket and second group multirow socket, first change over switch and second change over switch connect power module both ends respectively, first change over switch correspond first group positive, the back contact, first group positive contact and back contact connect first selector switch respectively, second change over switch correspond second group positive, the back contact connect the second selector switch respectively, first selector switch and second selector switch connect the both sides jack of first group multirow socket respectively, first selector switch and second selector switch connect the both sides jack of second group multirow socket respectively.
The first selection switch corresponds to 10 selection contacts, 10 selection contacts correspond to 10 core wires, 8 cores of the 10 core wires are respectively connected with one side jack of the first group of multi-row sockets in parallel, and 10 cores of the 10 core wires are respectively connected with one side jack of the second group of multi-row sockets in parallel.
The second selection switch corresponds to 5 selection contacts, 5 selection contacts correspond to 5 core wires, 5 core wires of the 5 core wires are respectively connected with jacks on the other side of the first group of multi-row sockets in series, and 4 core wires of the 5 core wires are respectively connected with jacks on the other side of the second group of multi-row sockets in series.
The first group of multi-row sockets comprises five rows of sockets, and each row of sockets comprises 8 groups of jacks respectively.
The second group of multi-row sockets comprises four rows of sockets, and each row of sockets comprises 10 groups of jacks respectively.
The power module comprises a power supply, an ammeter and a voltmeter, wherein the ammeter is connected with the voltmeter in parallel and then connected with the power supply.
The power supply comprises a battery and an external power supply.
The aim of the invention can be achieved by the following technical scheme:
compared with the prior art, the invention has the following advantages:
1. the efficiency is improved when MLC maintenance is convenient: after the circuit of the invention is used for driving, the formulated motor can be conveniently and accurately driven and measured;
2. is applicable to a plurality of versions: according to the MLC motor driver PCB version, two different plugs are arranged;
3. the driving of a single or single row motor can be realized: the single motor, the motor of one socket and the motor on the whole side can be driven by the combination of the JP1 and JP2 short-circuit pins, so that various maintenance requirements are met;
4. and (3) carrying out power supply selection according to the situation: the power module can be driven by a battery or an external power supply, so that the practical application is facilitated.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Wherein: s1, a change-over switch, S2, a first selection switch, S3, a second selection switch and P 1 First group of sockets I, P 2 Second group of sockets, P 3 Third, first group of sockets, P 4 Fourth, P of first group of sockets 5 Five, J of first group of sockets 1 Second group of sockets I, J 2 Second group of sockets II, J 3 Third, second group of sockets, J 4 And the second group of sockets are IV, JP1 and the first group of socket short-circuit pins are arranged, and JP2 and the second group of socket short-circuit pins are arranged.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Examples:
the externally-connected MLC driving measurement system of the medical accelerator adopts a specially-arranged circuit, can conveniently and accurately measure and judge each small motor of the MLC by stirring each switch, can realize driving measurement of one socket and the motor on the whole side by stirring the switch and the short-circuit contact pin, and greatly improves maintenance efficiency.
The concrete structure is as follows:
the utility model provides an external drive measurement system of MLC of medical accelerator, this measurement system includes power module and the switch S1 who is connected with power module, the first selector switch and the second selector switch that are connected respectively with the switch, the switch divide into first selector switch and second selector switch, first selector switch is connected to power module one end, the second selector switch is connected to the other end, first selector switch corresponds first group positive, the back contact, the second selector switch corresponds second group positive, the back contact is connected first selector switch S2 respectively, second group positive, the back contact is connected second selector switch S3 respectively, the system still includes first group multirow socket and second group multirow socket, first selector switch and second selector switch are connected respectively to the both sides jack of first group multirow socket, first selector switch and second selector switch are connected respectively to the both sides jack of second group multirow socket. The power module comprises a power supply, an ammeter and a voltmeter, wherein the ammeter is connected with the voltmeter in parallel and then connected with the power supply. The power supply comprises a battery and an external power supply.
The system is provided with two groups of sockets which respectively meet the requirements of different MLC motor driver PCB versions, wherein the first group of multi-row sockets comprises five rows of sockets which are respectively a first group of sockets, namely P 1 First group of sockets P 2 First group of sockets three P 3 Four P of first group of sockets 4 Five P sockets of the first group 5 Each row of sockets comprises 8 groups of jacks respectively; the second group of multi-row sockets comprises four rows of sockets, namely a J socket of the second group 1 Second group of socket two J 2 Second group of sockets three J 3 Second group of sockets four J 4 Each row of sockets includes 10 sets of jacks, respectively.
The first selection switch corresponds to 10 contacts, 10 contacts correspond to 10 core wires, 8 cores of the 10 core wires are respectively connected with the single-side jacks of the first group of multi-row sockets in parallel, and 10 cores of the 10 core wires are respectively connected with the single-side jacks of the second group of multi-row sockets in parallel. The second selector switch corresponds to 5 contacts, 5 contacts correspond to 5 core wires, 5 cores of the 5 core wires are respectively connected with single-side jacks of the first group of multi-row sockets in series, and 4 cores of the 5 core wires are respectively connected with the second group of multi-row sockets in series.
Working principle:
as shown in fig. 1, the circuit board is provided with all plugs (two different plugs are arranged according to MLC motor driver PCB versions) on the whole side, the power supply of the MLC motor on the whole side can be plugged in at a time, one motor is selected to drive by the combination of the S2 and S3 selection switches, the S1 is shifted to control the forward/backward movement of the motor, and meanwhile, the readings of the mA and V meters are monitored to judge whether the motor and the transmission system are good or not. The single motor, the motor of one socket and the motor on the whole side can be driven by setting the pins at the JP1 and/or JP2 short-circuit pins of the first and/or second groups of socket short-circuit pins and pulling the first and second selection switches S2 and S3 in combination, so as to meet various maintenance requirements.
After the circuit of the invention is used for driving, the formulated motor can be conveniently and accurately driven and measured; according to the MLC motor driver PCB version, two different plugs are arranged; the single motor, the motor of one socket and the motor on the whole side can be driven by the combination of the JP1 and JP2 short-circuit pins, so that various maintenance requirements are met; the power module can be driven by a battery or an external power supply, so that the practical application is facilitated.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (3)
1. The system is characterized by comprising a power module, a first change-over switch, a second change-over switch, a first selection switch, a second selection switch, a first group of multiple rows of sockets and a second group of multiple rows of sockets, wherein the first change-over switch and the second change-over switch are respectively connected with two ends of the power module, the first change-over switch corresponds to a first group of positive contacts and a second group of negative contacts, the first group of positive contacts and the second contact are respectively connected with the first selection switch, the second change-over switch corresponds to a second group of positive contacts and the second contact, the second group of positive contacts and the second contact are respectively connected with the second selection switch, the first selection switch and the second selection switch are respectively connected with two side jacks of the first group of multiple rows of sockets, and the first selection switch and the second selection switch are respectively connected with two side jacks of the second group of multiple rows of sockets;
the system is provided with two groups of sockets which respectively meet the requirements of different MLC motor driver PCB versions,wherein the first plurality of rows of sockets includes five rows of sockets, respectively a first group of sockets one (P 1 ) First group of second sockets (P 2 ) First group of sockets three (P 3 ) First group of sockets four (P 4 ) First group of sockets five (P 5 ) Each row of sockets comprises 8 groups of jacks respectively; the second plurality of rows of receptacles includes four rows of receptacles, one of the second plurality of receptacles (J) 1 ) Second group socket II (J) 2 ) Second group socket III (J) 3 ) Second group socket four (J) 4 ) Each row of sockets comprises 10 groups of jacks respectively;
the first selection switch corresponds to 10 contacts, 10 contacts correspond to 10 core wires, 8 cores of the 10 core wires are respectively connected with the single-side jacks of the first group of multi-row sockets in parallel, and 10 cores of the 10 core wires are respectively connected with the single-side jacks of the second group of multi-row sockets in parallel; the second selection switch corresponds to 5 contacts, 5 contacts correspond to 5 core wires, 5 cores of the 5 core wires are respectively connected with single-side jacks of the first group of multi-row sockets in series, and 4 cores of the 5 core wires are respectively connected with the second group of multi-row sockets in series;
the circuit board is provided with all plugs on one side, the MLC motor power supply on one side is plugged in at one time, one motor is selected to drive by the combination of the first selection switch (S2) and the second selection switch (S3), and the selector switch (S1) is shifted to control the forward/backward movement of the motor; the drive of a single motor, a motor of one socket and a motor of the whole side is achieved by arranging pins at the first group of socket short-circuit pins (JP 1) and/or at the second group of socket short-circuit pins (JP 2) in combination with toggling the first selection switch (S2) and the second selection switch (S3).
2. The MLC external drive measurement system of claim 1, wherein the power module comprises a power supply, an ammeter and a voltmeter, and the ammeter is connected with the voltmeter in parallel and then connected with the power supply.
3. The MLC external drive measurement system of claim 2, wherein the power source comprises a battery and an external power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710679201.2A CN109387369B (en) | 2017-08-10 | 2017-08-10 | MLC external driving measurement system of medical accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710679201.2A CN109387369B (en) | 2017-08-10 | 2017-08-10 | MLC external driving measurement system of medical accelerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109387369A CN109387369A (en) | 2019-02-26 |
| CN109387369B true CN109387369B (en) | 2023-12-05 |
Family
ID=65414227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710679201.2A Active CN109387369B (en) | 2017-08-10 | 2017-08-10 | MLC external driving measurement system of medical accelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109387369B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6459769B1 (en) * | 1999-05-03 | 2002-10-01 | Sherwood Services Ag | Movable miniature multi-leaf collimator |
| JP2003163100A (en) * | 2001-11-27 | 2003-06-06 | Hitachi Ltd | Driving method for medical accelerator |
| CN1489695A (en) * | 2001-01-31 | 2004-04-14 | ������ʵ���ҹ�˾ | Planarizing interposer |
| JP2007195652A (en) * | 2006-01-25 | 2007-08-09 | Toshiba Corp | Multi leaf collimator, and radiotherapy device equipped with it |
| JP3142822U (en) * | 2008-04-16 | 2008-06-26 | 石川電気商工株式会社 | Measuring instrument |
| CN106344061A (en) * | 2016-08-08 | 2017-01-25 | 沈阳东软医疗系统有限公司 | Multi-leaf collimator leaf motion position control device and method and linear accelerator |
| CN206355455U (en) * | 2016-10-27 | 2017-07-28 | 深圳市艾华联盟科技有限公司 | A kind of multi-diaphragm collimator leaf position feedback device |
| CN207231789U (en) * | 2017-08-10 | 2018-04-13 | 上海卓亚医疗科技有限公司 | A kind of external driving measuring systems of the MLC of medical accelerator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9925394B2 (en) * | 2011-06-08 | 2018-03-27 | Varian Medical Systems, Inc. | Automatic health detection for motion axes in medical linear accelerators |
-
2017
- 2017-08-10 CN CN201710679201.2A patent/CN109387369B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6459769B1 (en) * | 1999-05-03 | 2002-10-01 | Sherwood Services Ag | Movable miniature multi-leaf collimator |
| CN1489695A (en) * | 2001-01-31 | 2004-04-14 | ������ʵ���ҹ�˾ | Planarizing interposer |
| JP2003163100A (en) * | 2001-11-27 | 2003-06-06 | Hitachi Ltd | Driving method for medical accelerator |
| JP2007195652A (en) * | 2006-01-25 | 2007-08-09 | Toshiba Corp | Multi leaf collimator, and radiotherapy device equipped with it |
| JP3142822U (en) * | 2008-04-16 | 2008-06-26 | 石川電気商工株式会社 | Measuring instrument |
| CN106344061A (en) * | 2016-08-08 | 2017-01-25 | 沈阳东软医疗系统有限公司 | Multi-leaf collimator leaf motion position control device and method and linear accelerator |
| CN206355455U (en) * | 2016-10-27 | 2017-07-28 | 深圳市艾华联盟科技有限公司 | A kind of multi-diaphragm collimator leaf position feedback device |
| CN207231789U (en) * | 2017-08-10 | 2018-04-13 | 上海卓亚医疗科技有限公司 | A kind of external driving measuring systems of the MLC of medical accelerator |
Non-Patent Citations (2)
| Title |
|---|
| 医科达直线加速器多叶准直器(MLC)故障分析与检修;马全海;翟小娟;;中国医疗设备(第07期);113+132 * |
| 多叶光阑系统的日常维护及其常见故障的检测;查玉华;中国医疗器械信息(第03期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109387369A (en) | 2019-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203054146U (en) | Multi-core cable test device | |
| CN203164339U (en) | A cable system testing table | |
| CN109387369B (en) | MLC external driving measurement system of medical accelerator | |
| CN207231789U (en) | A kind of external driving measuring systems of the MLC of medical accelerator | |
| CN102323510B (en) | Rapid and reliable flat cable assembly detection device | |
| CN204374383U (en) | A kind of instrument for verifying auxiliary reclay | |
| CN103353540A (en) | Testing apparatus for testing measuring board module of photovoltaic combiner box | |
| CN203317260U (en) | Fixing jig for insertion operation | |
| CN203396876U (en) | Fast cable calibration instrument | |
| CN204857888U (en) | Lithium ion battery organizes prosthetic devices | |
| CN103852742A (en) | Electroscope test bench | |
| CN210037996U (en) | Detector of multi-blade collimator of linear accelerator | |
| CN202587703U (en) | Back plate guide device matched with machine disk | |
| CN209460043U (en) | A kind of steel strength verifying attachment based on municipal road and bridge construction | |
| CN207883862U (en) | Batteries of electric automobile modular structure and its tool for assembling | |
| CN202721885U (en) | LED drive power aging test load | |
| CN202421434U (en) | Dynamic aging device for 3DK28G and 3CK2E type transistors | |
| CN201856043U (en) | Medium-density series battery pole group welding device | |
| CN202421436U (en) | Row LED (Light Emitting Diode) powder supplementation testing device | |
| CN204903692U (en) | Multicore cable wire size measuring device | |
| CN218584912U (en) | Cell insulation testing device | |
| CN205229209U (en) | Electronic component electrical performance test equipment | |
| CN204731353U (en) | For the line sequence proving installation of protection gang | |
| CN220920076U (en) | Material distributing mechanism of LED light splitting machine | |
| CN219915693U (en) | Direct-insert type light-emitting diode detection device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |