CN1394657A - Source driving device for intracavitary tumour after-mounted radiotherapy machine - Google Patents
Source driving device for intracavitary tumour after-mounted radiotherapy machine Download PDFInfo
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- CN1394657A CN1394657A CN 01119985 CN01119985A CN1394657A CN 1394657 A CN1394657 A CN 1394657A CN 01119985 CN01119985 CN 01119985 CN 01119985 A CN01119985 A CN 01119985A CN 1394657 A CN1394657 A CN 1394657A
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- helical gear
- control cable
- drive device
- steel wire
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Abstract
The present invention relates to a source drive device for intracavitary after-tumor device its improvement lies in that: using steel wire soft shaft as source braid control cable instead of steel rope, substituling source drive wheel with spiral gear, changing friction transmission of driven mechanism into meshing transmission between source braid ocntrol cable and spiral gear. The source drive reliability of said therapy apparatus can be raised to above 99.5% from original 95%, and its step-by-step therapeutic accuracy can be raised to plus on minus 0.5mm from original plus or minus 1mm, and its production cost is reduced by 25%.
Description
The invention belongs to radiating medical equipment, be specifically related to a kind of source drive device of intracavitary tumour after-mounted radiotherapy machine.
In the prior art, the structural principle of the source drive device of intracavitary tumour after-mounted radiotherapy machine is: an end of source braid control cable (being steel wire rope) is pressed on the driving wheel of source with pressing plate, then source braid control cable sequentially is wrapped in the helicla flute of source driving wheel, the tensioning of reuse tension band, the other end is connected with radioactive source pigtail (being the fixture of radioactive source); When rotating counterclockwise and lean on the frictional force of tension band and source driving wheel, the source driving wheel drives the source braid control cable motion, thereby the radioactive source pigtail that drive is connected with source braid control cable is delivered to the precalculated position with radioactive source and is shone, irradiation finishes, the source driving wheel clockwise rotates and drives source braid control cable and moves backward, radioactive source is recovered to predetermined stored position, and source braid control cable sequentially is wrapped in the helicla flute of source driving wheel simultaneously.The deficiency of this technology is: 1, device uses tension band behind the certain hour owing to be out of shape and elongate and ftracture; Source braid control cable can not sequentially enter the helicla flute interior (the random groove problem of source braid control cable) of source driving wheel sometimes when going back to the source after 2, irradiation finishes, and causes device in-placing precision when next time using to reduce greatly, and the treatment accident might occur; When 3, the suffered resistance of source braid control cable was greater than the frictional force of tension band and source driving wheel in sending source procedure, source braid control cable was prone to skidding on the driving wheel of source, radioactive source can not be delivered to preposition; 4, can't make intracavitary tumour after-mounted radiotherapy machine have stall and return the source function automatically; 5, complex structure, manufacturing cost height, assembling and setting maintenance trouble.
The object of the present invention is to provide a kind of source drive device that can overcome above-mentioned deficiency and intracavitary tumour after-mounted radiotherapy machine simple in structure, easy to use.
The objective of the invention is to realize by following scheme: source braid control cable one end is connected with the radioactive source pigtail, the other end matches with drive disk assembly, drive disk assembly is located on the axle, axle is located on the motor shaft, the top of axle is provided with pinion, motor is fixed on to be installed on the base plate, and drive disk assembly is provided with the photoelectric detection system interface.Source braid control cable be with the higher steel wire rope of intensity be mandrel, the Bowden cable on steel wire rope, made then around one deck spiral type steel wire, its lead angle is γ, pitch is P1; Drive disk assembly is a helical gear, and helical gear helical angle is β, and tooth pitch is P2.The lead angle γ of the spiral type steel wire of source braid control cable and pitch P 1 equate with helical gear helixangle and tooth pitch P2 respectively, are 12 °～14 ° and 2～3mm.The ring-type arc groove that to have a radius on the symmetrical neutral surface of helical gear gear teeth width be 1.5～2mm.Be provided with the driven wheel box outside helical gear, the housing of driven wheel box comprises two parts up and down.Helical gear is provided with at least one photoelectric detection system interface, respectively is provided with a photoelectric detection system interface on the two-part correspondence position up and down at housing.One end of source braid control cable penetrates control conduit and one and connects soon and change head, inserts the driven wheel box and makes source braid control cable and helical gear engagement, and connect soon by another and to change head and pass the driven wheel box, enters auxiliary storage conduit.
Effect of the present invention is: owing to change the Motion Transmission form of driving device into source braid control cable and helical gear engaged transmission by frictional drive, do not need the tension band tensioning, avoided tension band to elongate and phenomenon of rupture, guaranteed also simultaneously that random groove no longer appears in source braid control cable and the problem of skidding, safety, source driving reliability and the precision of therapy apparatus complete machine are improved greatly.The source drives reliability and brings up to 99.5% by original 95%, and stepping accuracy is brought up to ± 0.5mm by original ± 1mm.The present invention has simplified apparatus structure, has reduced manufacturing cost, and easy to use.
Now in conjunction with the accompanying drawings and embodiments the present invention is described in detail:
The present invention has two accompanying drawings:
Fig. 1 is the cross-sectional view of source drive device.
Fig. 2 is the vertical view of source drive device.
Among the figure 1. special source braid control cables (Bowden cable) 2. hydraulic quick coupler 3. pan head screws (1) 4. 5. 6. locking nut 7. pan head screws of pinion (2) 8. housing 9. the base plates 10. helical gears 11. bearings 12. hexagon-headed bolts 13. motors 14. flat keys 15. holding screws 16. control conduits 17. auxiliary conduits of storing are installed
As shown in Figure 1 and Figure 2, the source braid control cable 1 of source drive device is that the higher steel wire rope of employing intensity is a mandrel among the present invention, makes around one deck spiral type steel wire tightly on steel wire rope then, and its lead angle γ is 13.15 °, and pitch P 1 is 2.5mm.Source braid control cable 1 one ends are connected with the radioactive source pigtail, and the other end and helical gear 10 intermesh.Helical gear helixangle is 13.15 °, tooth pitch P2 is 2.5mm, the ring-type arc groove 19 that to have a radius on the profile in the symmetry of the gear teeth width of helical gear 10 be 1.8mm, it is moving at the string of helical gear 10 gear teeth widths that this arc groove can limit source braid control cable 1.Helical gear 10 and housing 8, bearing 11, the pan head screw 3 common driven wheel boxes of forming, housing is two parts about in the of 8 minutes, are connected with helical gear 10 by helical gear 10 lateral two bearings 11 respectively, and four pan head screws 3 of reuse are connected and fixed and become one.Helical gear 10 is connected with axle 5 by flat key 14, and axle 5 usefulness holding screws 15 are fixed on the axle of motor 13.A pinion 4 is fixed with locking nut 6 in top at axle 5, and pinion 4 passes to checkout gear with the angle that helical gear 10 rotates, to measure the position in source.Four bolts 12 of motor 13 usefulness are fixed on to be installed on the base plate 9, and the driven wheel box is fixed on four pan head screws 7 and installs on the base plate 9.The equidistant photoelectric detection system interface 18 that evenly is provided with six circles on the helical gear, respectively be provided with a same photoelectric detection system interface 18 on the two-part correspondence position up and down at housing, the center of these two interfaces equals the vertical dimension of the center of six interfaces on the helical gear 10 to helical gear 10 wheel shafts to the vertical dimension of helical gear 10 wheel shafts.As shown in Figure 2, being provided with two in source drive device altogether connects soon and changes 2, be connected with the auxiliary conduit 17 of storing with control conduit 16 respectively, one end of source braid control cable 1 penetrates control conduit 16 and one and connects soon and change 2, insert the driven wheel box and make source braid control cable 1 and helical gear 10 engagements, turning cylinder 5 make source braid control cable 1 can with the tooth engagement on half circumference of helical gear 10, and connect soon by another and to change 2 and pass the driven wheel box, enter the auxiliary conduit 17 of storing.
When this device by after base plate 9 be installed be contained on the intracavitary tumour after-mounted radiotherapy machine, the other end of source braid control cable 1 is connected in the radioactive source pigtail.During use, the source braid control cable 1 that makes helical gear 10 rotate counterclockwise and drive to be engaged with by motor 13 travels forward, and makes radioactive source can deliver to preposition to shine thereby drive the motion of radioactive source pigtail; Move backward by the source braid control cable 1 that motor 13 makes helical gear 10 clockwise rotate and drive to be engaged with in the irradiation back that finishes, thereby drive the motion of radioactive source pigtail radioactive source be may be withdrawn in the shield, source braid control cable 1 is recovered to auxiliary the storage in the conduit 17 simultaneously.
Claims (8)
1. the source drive device of an intracavitary tumour after-mounted radiotherapy machine, source braid control cable (1) one end is connected with the radioactive source pigtail, the other end matches with drive disk assembly, drive disk assembly is located on the axle (5), axle (5) is located on motor (13) axle, the top of axle (5) is provided with pinion (4), motor (13) is fixed on to be installed on the base plate (9), drive disk assembly is provided with photoelectric detection system interface (18), it is characterized in that described source braid control cable (1) is is mandrel with the higher steel wire rope of intensity, the Bowden cable of on steel wire rope, making then around one deck spiral type steel wire, its lead angle is γ, and pitch is P1; Described drive disk assembly is a helical gear (10), and helical gear helical angle is β, and tooth pitch is P2; Source braid control cable and helical gear intermesh.
2. source drive device as claimed in claim 1 is characterized in that the lead angle γ and the pitch P 1 of the spiral type steel wire of source braid control cable equates with helical gear helixangle and tooth pitch P2 respectively.
3. source drive device as claimed in claim 2, the lead angle γ that it is characterized in that the spiral type steel wire of source braid control cable are that 12 °～14 °, pitch P 1 are 2～3mm.
4. as claim 1,2 or 3 described source drive devices, it is characterized in that in the symmetry of helical gear gear teeth width, having a radius on the profile ring-type arc groove (19) that is 1.5～2mm.
5. source drive device as claimed in claim 4 is characterized in that being provided with the driven wheel box outside helical gear.
6. source drive device as claimed in claim 5 is characterized in that the housing of driven wheel box comprises two parts and fixedly connected up and down.
7. source drive device as claimed in claim 6 is characterized in that helical gear is provided with at least one photoelectric detection system interface (18), respectively is provided with a photoelectric detection system interface on the two-part correspondence position up and down at housing.
8. source drive device as claimed in claim 7, an end that it is characterized in that source braid control cable penetrates control conduit (16) and one and connects soon and change (2), insert the driven wheel box and make source braid control cable and helical gear engagement, and connect soon by another and to change head (2) and pass the driven wheel box, enter the auxiliary conduit (17) of storing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01119985 CN1278750C (en) | 2001-07-06 | 2001-07-06 | Source driving device for intracavitary tumour after-mounted radiotherapy machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01119985 CN1278750C (en) | 2001-07-06 | 2001-07-06 | Source driving device for intracavitary tumour after-mounted radiotherapy machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1394657A true CN1394657A (en) | 2003-02-05 |
| CN1278750C CN1278750C (en) | 2006-10-11 |
Family
ID=4663843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01119985 Expired - Lifetime CN1278750C (en) | 2001-07-06 | 2001-07-06 | Source driving device for intracavitary tumour after-mounted radiotherapy machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1278750C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267568A (en) * | 2015-06-01 | 2017-01-04 | 宋玲琴 | Cervical cancer internal-radiation therapy device |
| CN114053601A (en) * | 2021-11-12 | 2022-02-18 | 江苏海明医疗器械有限公司 | Outlet length self-correcting device for back-loading radiotherapy machine |
-
2001
- 2001-07-06 CN CN 01119985 patent/CN1278750C/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267568A (en) * | 2015-06-01 | 2017-01-04 | 宋玲琴 | Cervical cancer internal-radiation therapy device |
| CN106267568B (en) * | 2015-06-01 | 2019-10-22 | 宋玲琴 | Cervical carcinoma internal-radiation therapy device |
| CN114053601A (en) * | 2021-11-12 | 2022-02-18 | 江苏海明医疗器械有限公司 | Outlet length self-correcting device for back-loading radiotherapy machine |
| CN114053601B (en) * | 2021-11-12 | 2023-07-28 | 江苏海明医疗器械有限公司 | Self-correcting device for length of outlet source of rear-loading radiation therapy apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1278750C (en) | 2006-10-11 |
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Granted publication date: 20061011 |