CN1322578A - Deriving device of remote after-loading intracavitary unit - Google Patents
Deriving device of remote after-loading intracavitary unit Download PDFInfo
- Publication number
- CN1322578A CN1322578A CN 01129300 CN01129300A CN1322578A CN 1322578 A CN1322578 A CN 1322578A CN 01129300 CN01129300 CN 01129300 CN 01129300 A CN01129300 A CN 01129300A CN 1322578 A CN1322578 A CN 1322578A
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- CN
- China
- Prior art keywords
- wheel
- source
- ring
- gear
- ring groove
- Prior art date
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
- A61N2005/1008—Apparatus for temporary insertion of sources, e.g. afterloaders
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
One driving mechanism for safety driving fine post-installed machine radiation source has flexibly rotating source driving mechanism. The small gap between the source guiding block and the annular grooved pulley and that between belt guide wheel and the source guiding block make it easy to install and regulate, make the source guiding block and annular grooved pulley run at adaptive state and make the installation and unloading of radiation source easy. The mechanism has the advantages of that in patent 98119833.3 maintained, and the post-installed machine produces no accumulation error and jamming while driving the radiation source, and this makes the treatment more safe.
Description
What the present invention relates to is the let-off gear(stand) of rearmounted radiation source.In patent 98119833.3 described devices, because ring groove wheel, dummy pipe, rear tube and belt guide wheel all are hard-wired, the radioactive source drive mechanism can be rotated flexibly, slit between conduit and ring groove wheel, belt guide wheel and the conduit is very little simultaneously, just the requirement on machining accuracy to each parts is very high for this, the assembling of equipment is also relatively more difficult, and especially to driving the radioactive source below 1 millimeter, the processing of each parts and assembling are just difficult more.
The objective of the invention is to: promptly kept the various superioritys in the patent 98119833.3, afterloading unit can have been adapted to drive more tiny radioactive source.Can accomplish to make the source drive mechanism to rotate flexibly, the slit between stem piece and ring groove wheel, belt guide wheel and the stem piece is very little, and it is to be in the self adaptation state that stem piece and ring groove wheel are in operation.Assembling adjustment is simultaneously got up very easy, and the loading and unloading radioactive source is also more convenient.
Reaching the object of the invention technical scheme is: a kind of actuating device that can drive more tiny rearmounted radiation source safely, this device comprises: a ring groove wheel is set, the side of ring groove wheel is provided with the preceding stem piece and the back stem piece of band guide rail respectively, guide rail is contained in the groove of ring groove wheel, the outside of ring groove wheel packs tightly with belt by the belt guide wheel, article one, an end of the specific length radioactive source steel wire rope that has a radioactive substance passes through in groove, by frictional drive, fixedly install a master gear above the ring groove wheel, ring groove wheel is by drive motors control.A guide block bracket institution of being made up of guide block carrier base, guide block axle, spiral duct and serpentine pipe overcoat is set, dummy pipe and rear tube are set on the guide block carrier base, and radioactive source is extracted by the stem piece that is supported by the guide block bracket institution from the groove of sheave.A wheel bracket mechanism that is made up of wheel bracket seat, arc shaped groove, support shaft, guide wheel shaft, wheel bracket seat fixed screw is set, and the belt guide wheel can be adjusted belt guide wheel and the gap of stem between the piece easily by wheel bracket mechanism.Three ring position-limit mechanisms of being made up of position limited gear, interior ring, band landslide and the middle ring of block, outer annular gear, toothed position limit arm, spacing stage clip, compression spring sleeve and compression spring sleeve fixed screw are set, position limit arm is provided with a limited post, interior ring and outer annular gear are fixed on the ring groove wheel, in ring can interior ring and outside rotate between the annular gear, position limited gear is meshed with master gear.End at rear tube is provided with an adjustable source of being made up of center microswitch, rail plate, slip cap, bolt and contact pilotage to the center stopping means, and the center microswitch is fixed on the slip cap on the rail plate.Be provided with one by the positioner that goes out the source that prevents out the overlength that source position limited inching switch and microswitch support form.The anglec of rotation that a rotary encoder is used for detecting drive motors is set.On dummy pipe, be provided with one and go out the source location checkout gear by what go out that the source detects that photoswitch and photoswitch support form.A radiation protection jar is set, and dummy pipe therefrom passes through, and forms Z-shaped in the radiation protection jar.A treatment catheter extension is set, in order to be connected with the intravital treatment pipeline of insertion people.
Method of the present invention is achieved in that
One, guide block bracket institution and stem piece at first are installed:
1. ring groove wheel is installed on the drive motors axle.
2. the piece that will have its source is installed on the guide block axle on the guide block carrier base, and the stem piece can be at the guide block axle
Last rotation is contained in the groove of ring groove wheel the guide rail on the stem piece.
3. couple together with will have its source piece and guide block carrier base of spiral duct and serpentine pipe overcoat, by
In spiral duct certain elasticity is arranged, radially adjust between stem piece and ring groove wheel between
The crack makes it to reach ideal position, then the guide block carrier base is fixed.
4. dummy pipe and rear tube and guide block carrier base are connected.
Two, wheel bracket mechanism and belt guide wheel are installed:
1. the belt guide wheel is installed on the guide wheel shaft on the wheel bracket seat, the wheel bracket seat is pacified
Be contained on the wheel bracket axle, the wheel bracket seat can rotate on the wheel bracket axle.
2. round wheel bracket axial adjustment wheel bracket seat, make belt guide wheel and stem interblock between
The crack reaches ideal position, tightens wheel bracket seat fixed screw, and the wheel bracket seat is solid
Reserve.
Three, three ring position-limit mechanisms are installed:
1. interior ring, middle ring and outer annular gear are installed on the position limited gear ring in the assurance
Can interior ring and outside rotate between the annular gear.
2. the position limit arm that limited post will be housed is installed on the axle of interior ring, guarantees on the position limit arm
Teeth can be meshed with the tooth on the outer annular gear.Load onto spacing stage clip and push down position limit arm,
The stage clip outside puts compression spring sleeve, with the compression spring sleeve fixed screw compression spring sleeve is fixed on then
On the interior ring.
Four, afterloading unit installs radioactive source by following step earlier before bringing into operation:
1. radioactive source is sent to from dummy pipe, the groove by preceding stem piece and ring groove wheel again
From back stem piece and rear tube, come out.At this moment radioactive source should be adjusted to radiation protection
The jar center.
2. adjust the position of center microswitch, make it to push down contact pilotage, at this moment contact pilotage withstands radiation
The tail end in source is tightened bolt again, and slip cap is fixed on the rail plate.
3. the teeth on the position limit arm are meshed with tooth on the outer annular gear, make go out source side to
The time, position limit arm can not rotate, but return source side to the time, position limit arm can also rotate.
When afterloading unit goes out the source operation, drive motors drives ring groove wheel and rotates, radioactive source is sent, because the guide rail on the stem piece is contained in the groove of ring groove wheel, and stem piece and guide block carrier base are flexible coupling by resilient serpentine pipe, so when ring groove wheel some radial and axial beating that are in operation, the stem piece also can be followed the sheave operation adaptively, and stuck phenomenon can not take place.Radioactive source initially goes out the source position as radioactive source during by photoswitch.Limited post when going out the source on the position limit arm rotates along with ring groove wheel and near going out the source position limited inching switch.Because the effect of limited post can not be sent radioactive source and leaves afterloading unit.Exceed greatest length if go out the source, limited post can be run into and the source position limited inching switch, and makes the drive motors stall.
When afterloading unit goes back to the source, when radioactive source begins to calculate the distance of Hui Yuan during by photoswitch, make radioactive source get back to radiation protection jar center, at this moment the end of radioactive source should be run into the center microswitch by contact pilotage.
When changing the source, unloads afterloading unit the source operation:
1. ring in rotating, position limit arm is lifted on the landslide on the middle ring, makes in the position limit arm arrival
The position of the block on the ring is taken off the tooth on teeth and the outer annular gear on the position limit arm
From, position limit arm just can freely rotate on the axle of interior ring like this.
2. make afterloading unit go out the source, because at this moment position limit arm can be at internal ring by the length of whole radioactive source
The axle of circle is gone up and freely to be rotated, and does not stop so do not have when unloading the source.
Because of radioactive source is to move in the pipeline of a sealing, so can not block the source phenomenon.
Characteristics of the present invention are:
1. make afterloading unit can drive more tiny radioactive source.
2. the adjustment of radioactive source export agency is simple.
3. afterloading unit can not produce cumulative error when operation.
4. can prevent the generation of card source accident.
5. belt of this device and the frictional force between the radioactive source are fixed constants, and frictional force can
, and adjust easily radioactive source stable transferring very greatly.
6. whole apparatus structure is simple.
7. the loading and unloading source electrode is for convenient.
A kind of example of this deriving device of remote after-loading intracavitary unit is described with reference to the accompanying drawings.
Accompanying drawing: Fig. 1 is the deriving device of remote after-loading intracavitary unit overall schematic.
Fig. 2 is the deriving device of remote after-loading intracavitary unit schematic side view.
Fig. 3 is outer annular gear sketch map.
Fig. 4 is three ring position-limit mechanism sketch maps.
Ring sketch map among Fig. 5.
Fig. 6 position limit arm sketch map.
Fig. 7 guide block bracket institution sketch map.
Fig. 8 wheel bracket structural scheme of mechanism.
Fig. 9 piece sketch map that has its source.
Figure 10 is that adjustable source is to center stopping means sketch map.
Preceding stem piece (30) and back stem piece (31) are installed on the guide block axle (32), preceding stem piece (30) and back stem piece (31) can be gone up rotation at guide block axle (32), and the guide rail (42) before making on stem piece (30) and the back stem piece (31) is contained in the groove (24) of ring groove wheel (1).With spiral duct (38) (40) and serpentine pipe overcoat (39) (41) preceding stem piece (30) and back stem piece (31) are coupled together with guide block carrier base (29).Gap before radially adjusting between stem piece (30) and back stem piece (31) and the ring groove wheel (1) makes it to reach ideal position, then guide block carrier base (29) is fixed on the supporting plate (28).Dummy pipe (4) and rear tube (3) are connected with guide block carrier base (29).Wheel bracket axle (34) is fixed on the supporting plate (28), belt guide wheel (5) is installed on the guide wheel shaft (35) on the wheel bracket seat (33), wheel bracket seat (33) can be gone up at wheel bracket axle (34) and rotate.Adjust wheel bracket seat (33) round wheel bracket axle (34), make the gap between belt guide wheel (5) and stem piece (31) reach ideal position, tighten the wheel bracket seat fixed screw (37) in the arc shaped groove (36), wheel bracket seat (33) is fixed on the supporting plate (28).Interior ring (10), middle ring (11) and outer annular gear (12) are installed on the position limited gear (13), ring in the assurance (11) can interior ring (10) and outside rotate between the annular gear (12).Position limited gear (13) is fixed on the supporting plate (28) by axle (27), and position limited gear (13) can rotate around axle (27).Be provided with limited post (9) on the position limit arm (43) of band teeth (49), in rotating during ring (11), position limit arm (43) is lifted on landslide (47) on the middle ring (11), make the position of the block (48) on the ring (11) in position limit arm (43) arrival, teeth (49) and the tooth on the outer annular gear (12) on the position limit arm (43) are broken away from, and position limit arm (43) just can rotate round axle (27) like this.If ring (11) in the anti-phase again rotation can make the teeth (49) on the position limit arm (43) be meshed with tooth on the outer annular gear (12).Spacing stage clip (45) is housed on position limit arm (43) pushes down position limit arm (43), spacing stage clip (45) outside puts compression spring sleeve (44), uses compression spring sleeve fixed screw (46) that compression spring sleeve (44) is fixed on the axle of interior ring (10) then.Position limited gear (13) and master gear (2) engagement, master gear (2) and coaxial connection of ring groove wheel (1).Ring groove wheel (1) is by drive motors (25) control, and the rear axle of drive motors (25) is connected with rotary encoder (26), and rotary encoder (26) is used for detecting the anglec of rotation of drive motors (25).Stem piece (30) and back stem piece (31) before the side of ring groove wheel (1) is provided with respectively, the outside of ring groove wheel (1) packs tightly with belt (6) by belt guide wheel (5), radioactive source steel wire rope (18) is entered from dummy pipe (4), by preceding spiral duct (38), preceding stem piece (30), in the groove (24) of ring groove wheel (1), pass through, then from back stem piece (31), rear screw conduit (40), come out to enter rear tube (3).Radioactive source (18) is to lean on frictional drive.In order to prevent the leakage of lonizing radiation, be provided with a radiation protection jar (16), dummy pipe (4) therefrom passes through, and forms Z-shaped in radiation protection jar (16).In order to detect the position of radioactive source (18), be provided with a photoswitch (15) and be placed on the photoswitch support (14).Leave afterloading unit in order to prevent that radioactive source (18) is sent, be provided with one and be placed in and go out source position limited inching switch (8) on the microswitch support (7).For with insert the intravital pipeline of people and join, be provided with treatment catheter extension (17) at the front end of dummy pipe (4).In order to guarantee that radioactive source (18) can accurately get back to radiation protection jar (16) center, an adjustable source of being made up of center microswitch (21), rail plate (23), slip cap (20), bolt (19) and contact pilotage (22) is set to the center stopping means at the end of rear tube (3).Center microswitch (21) is fixed on the slip cap (20).
This device also is applicable to the situation of a plurality of driver elements.
This device is specially adapted to drive more tiny rearmounted radiation source, makes the adjustment of equipment and loading and unloading radioactive source easier, and the radioactive source that is in operation can not produce cumulative error, can not block the source accident yet.
Claims (10)
1. actuating device that can drive more tiny rearmounted radiation source safely, this device comprises: a ring groove wheel is set, the side of ring groove wheel is provided with the preceding stem piece and the back stem piece of band guide rail respectively, guide rail is contained in the groove of the sheave that goes in ring, the outside of ring groove wheel packs tightly with belt by the belt guide wheel, article one, an end of the specific length radioactive source steel wire rope that has a radioactive substance passes through in groove, by frictional drive, fixedly install a master gear above the ring groove wheel, ring groove wheel is by drive motors control.
2. device according to claim 1, it is characterized in that: a guide block bracket institution of being made up of guide block carrier base, guide block axle, spiral duct and serpentine pipe overcoat is set, dummy pipe and rear tube are set on the guide block carrier base, radioactive source passes through from the groove of sheave, passes by the stem piece of guide block bracket institution support to be extracted.
3. device according to claim 1, it is characterized in that: a wheel bracket mechanism that is made up of wheel bracket seat, arc shaped groove, wheel bracket axle, guide wheel shaft, wheel bracket seat fixed screw is set, and the belt guide wheel can be adjusted belt guide wheel and the gap of stem between the piece easily by wheel bracket mechanism.
4. device according to claim 1, it is characterized in that: three ring position-limit mechanisms of being made up of position limited gear, interior ring, band landslide and the middle ring of block, outer annular gear, toothed position limit arm, spacing stage clip, compression spring sleeve and compression spring sleeve fixed screw are set, position limit arm is provided with a limited post, interior ring and outer annular gear are fixed on the ring groove wheel, in ring can interior ring and outside rotate between the annular gear, position limited gear is meshed with master gear.
5. device according to claim 1, it is characterized in that: the end at rear tube is provided with an adjustable source of being made up of center microswitch, rail plate, slip cap, bolt and contact pilotage to the center stopping means, and the center microswitch is fixed on the slip cap on the rail plate.
6. device according to claim 1 is characterized in that: be provided with one by the positioner that goes out the source that prevents out the overlength that source position limited inching switch and microswitch support form.
7. device according to claim 1 is characterized in that: the anglec of rotation that a rotary encoder is used for detecting drive motors is set.
8. device according to claim 1 is characterized in that: be provided with one and go out the source location checkout gear by what go out that the source detects that photoswitch and photoswitch support form on dummy pipe.
9. device according to claim 1 is characterized in that: a radiation protection jar is set, and dummy pipe therefrom passes through, and forms Z-shaped in the radiation protection jar.
10. device according to claim 1 is characterized in that: a treatment catheter extension is set, in order to be connected with the intravital treatment pipeline of insertion people.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129300 CN1233430C (en) | 2001-06-21 | 2001-06-21 | Deriving device of remote after-loading intracavitary unit |
| PCT/CN2001/001629 WO2003000342A1 (en) | 2001-06-21 | 2001-12-14 | Rearmounted radiation source guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129300 CN1233430C (en) | 2001-06-21 | 2001-06-21 | Deriving device of remote after-loading intracavitary unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1322578A true CN1322578A (en) | 2001-11-21 |
| CN1233430C CN1233430C (en) | 2005-12-28 |
Family
ID=4669063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01129300 Expired - Lifetime CN1233430C (en) | 2001-06-21 | 2001-06-21 | Deriving device of remote after-loading intracavitary unit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1233430C (en) |
| WO (1) | WO2003000342A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105194805A (en) * | 2015-10-20 | 2015-12-30 | 江苏海明医疗器械有限公司 | Radioactive source conveying device of nuclide after-loading therapy apparatus |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8096700B2 (en) | 1999-11-24 | 2012-01-17 | Impulse Devices Inc. | Heat exchange system for a cavitation chamber |
| CN104511097B (en) * | 2014-12-22 | 2017-07-07 | 天津大学 | High dose rate multichannel afterloader indexing head mechanism |
| CN107837465B (en) * | 2017-11-21 | 2024-05-14 | 西安大医集团股份有限公司 | Source guiding device and system |
| NL2023918B1 (en) * | 2019-09-30 | 2021-05-27 | Nucletron Operations Bv | Selector for Remotely Medical Device / Afterloading |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1190602A (en) * | 1997-02-14 | 1998-08-19 | 王力平 | Device for correcting operation accumulative error of rear installed radiation source |
| CN1069063C (en) * | 1998-09-18 | 2001-08-01 | 王力平 | Rearmounted radiation source gearing device |
-
2001
- 2001-06-21 CN CN 01129300 patent/CN1233430C/en not_active Expired - Lifetime
- 2001-12-14 WO PCT/CN2001/001629 patent/WO2003000342A1/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105194805A (en) * | 2015-10-20 | 2015-12-30 | 江苏海明医疗器械有限公司 | Radioactive source conveying device of nuclide after-loading therapy apparatus |
| CN105194805B (en) * | 2015-10-20 | 2018-03-20 | 江苏海明医疗器械有限公司 | A kind of radioactive source conveying device of nucleic afterloader |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1233430C (en) | 2005-12-28 |
| WO2003000342A1 (en) | 2003-01-03 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 300384 Tianjin Nankai District Huayuan Bihuali 24-2-102 Patentee after: Wang Liping Address before: 300060. East Lake 23-57-403, Hexi District, Tianjin Patentee before: Wang Liping |
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| CX01 | Expiry of patent term |
Granted publication date: 20051228 |
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| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Liping Document name: Notice of expiration and termination of patent right |
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| DD01 | Delivery of document by public notice |