CN216250013U - Radiation source collimator - Google Patents
Radiation source collimator Download PDFInfo
- Publication number
- CN216250013U CN216250013U CN202122819507.8U CN202122819507U CN216250013U CN 216250013 U CN216250013 U CN 216250013U CN 202122819507 U CN202122819507 U CN 202122819507U CN 216250013 U CN216250013 U CN 216250013U
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- baffle
- guide rail
- positive
- motor
- radiation source
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- 230000005855 radiation Effects 0.000 title claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Apparatus For Radiation Diagnosis (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
The utility model discloses a radiation source collimator, which comprises a substrate, wherein a first guide rail is arranged on the substrate along the X direction, a second guide rail is arranged on the substrate along the Y direction, a first baffle and a second baffle are arranged on the first guide rail in a sliding manner, and a third baffle and a fourth baffle are arranged on the second guide rail in a sliding manner; the first baffle and the second baffle are connected through a first positive and negative screw rod, the first positive and negative screw rod is driven by a first motor, the third baffle and the fourth baffle are connected through a second positive and negative screw rod, and the second positive and negative screw rod is driven by a second motor.
Description
Technical Field
The utility model belongs to the technical field of medical instrument manufacturing, and particularly relates to a radiation source collimator.
Background
In order to reduce the radiation dose to which the patient is subjected when the cone beam CT is photographed, the size of the outgoing beam of the radiation source needs to be adjusted according to the size of the photographing field of view. In the current technical solution, there are two main ways, one way is: holes with different sizes are manufactured in one or more plates so as to meet the requirements of different shooting visual fields, but the size of the equipment can cause great limitation on the number of the holes, so that the adjustable range is limited; the second method comprises the following steps: the direction that needs to adjust out the bundle size is provided with a initiative respectively, a driven radiation source baffle, and the play beam of radiation source is adjusted with initiative radiation source baffle to driven radiation source baffle cooperation spring, magnetite etc. this kind of mode can carry out continuous adjustment to radiation source play beam size, nevertheless because driven baffle relies on magnetic force and spring force to move, can cause the center that the source of radiation beam export that radiation source baffle constitutes when adjusting has the offset distance with awl beam radiation source center.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a radiation source collimator.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a ray source collimator comprises a substrate, wherein a first guide rail is arranged on the substrate along the X direction, a second guide rail is arranged on the substrate along the Y direction, a first baffle and a second baffle are arranged on the first guide rail in a sliding mode, and a third baffle and a fourth baffle are arranged on the second guide rail in a sliding mode;
no. one baffle and No. two baffles are connected through a positive and negative lead screw, and a positive and negative lead screw passes through a motor drive, connect through No. two positive and negative lead screws between No. three baffles and No. four baffles, No. two positive and negative lead screws pass through No. two motor drives.
Preferably, the first baffle and the second baffle are respectively provided with a thread structure with opposite thread directions and are in threaded connection with the first positive and negative screw rods;
no. three baffles and No. four baffles are provided with the helicitic texture of opposite screw thread direction respectively, and all connect with No. two positive and negative lead screw threads soon.
Preferably, the output shaft of the first motor is in transmission connection with the first positive and negative screw rod, and the output shaft of the second motor is in transmission connection with the second positive and negative screw rod through couplers.
Preferably, two sliding blocks are arranged on the first guide rail and the second guide rail in a sliding mode, the two sliding blocks on the first guide rail are respectively connected with the first baffle and the second baffle, and the two sliding blocks on the second guide rail are respectively connected with the third baffle and the fourth baffle.
Preferably, the first baffle, the second baffle, the third baffle and the fourth baffle form a # -shaped structure, and a cone beam source outlet is arranged at the center of the # -shaped structure.
Preferably, the first motor and the second motor are both fixedly arranged on the substrate through motor supports.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
in the utility model, when the motor drives the positive and negative screw rods to rotate, the first baffle and the second baffle simultaneously perform opposite actions along the direction of the first guide rail through the thread structure, and the third baffle and the fourth baffle simultaneously perform opposite actions along the direction of the second guide rail, so that the size of the outlet of the ray source is continuously adjusted, the adjusting range is wider, and the center of the outlet of the ray source is coincided with the center of the cone beam ray source.
Drawings
Fig. 1 is a schematic overall structure diagram of a radiation source collimator provided by an embodiment of the utility model;
FIG. 2 is a side view of a radiation source collimator provided by an embodiment of the present invention;
figure 3 is an exploded view of a radiation source collimator provided by an embodiment of the present invention.
Reference numerals: 1. a substrate; 2. a first guide rail; 3. a second guide rail; 4. a first baffle plate; 5. a second baffle plate; 6. a third baffle plate; 7. a baffle plate No. four; 8. a first positive and negative screw rod; 9. a first motor; 10. a second positive and negative screw rod; 11. a second motor; 12. a coupling; 13. a slider; 14. a motor bracket; 15. and (4) a cone beam source outlet.
Detailed Description
The following further describes an embodiment of a radiation source collimator according to the present invention with reference to fig. 1-3. A radiation source collimator according to the utility model is not limited to the description of the following embodiments.
Example 1:
in this embodiment, a specific implementation manner of a radiation source collimator is provided, as shown in fig. 1, including a substrate 1, a first guide rail 2 is arranged on the substrate 1 along an X direction, a second guide rail 3 is arranged on the substrate 1 along a Y direction, a first baffle 4 and a second baffle 5 are slidably arranged on the first guide rail 2, and a third baffle 6 and a fourth baffle 7 are slidably arranged on the second guide rail 3;
no. 4 baffle and No. 5 baffle are connected through positive and negative lead screw 8, and positive and negative lead screw 8 is through a motor 9 drive, connects through positive and negative lead screw 10 No. two between No. three baffle 6 and No. four baffles 7, and positive and negative lead screw 10 of No. two is through motor 11 drive No. two.
Further, the first baffle 4 and the second baffle 5 are respectively provided with a thread structure with opposite thread directions and are in threaded connection with the first positive and negative screw rod 8;
no. three baffles 6 and No. four baffles 7 are respectively provided with a thread structure with opposite thread directions and are in threaded connection with the No. two positive and negative screw rods 10.
Further, an output shaft of the first motor 9 is in transmission connection with the first positive and negative screw rod 8, and an output shaft of the second motor 11 is in transmission connection with the second positive and negative screw rod 10 through a coupler 12.
Furthermore, two sliding blocks 13 are arranged on the first guide rail 2 and the second guide rail 3 in a sliding mode, the two sliding blocks 13 on the first guide rail 2 are respectively connected with the first baffle 4 and the second baffle 5, and the two sliding blocks 13 on the second guide rail 3 are respectively connected with the third baffle 6 and the fourth baffle 7.
Furthermore, a first baffle 4, a second baffle 5, a third baffle 6 and a fourth baffle 7 form a # -shaped structure, and a cone beam source outlet 15 is arranged at the center of the # -shaped structure.
Further, the first motor 9 and the second motor 11 are both fixedly arranged on the substrate 1 through a motor bracket 14.
The working principle is as follows: as shown in fig. 1-3, first, as shown in fig. 1-3,
when the first motor 9 drives the first positive and negative screw rod 8 to rotate, the first positive and negative screw rod 8 drives the first baffle 4 and the second baffle 5 to simultaneously move along the first guide rail 2 in opposite directions, so that the first baffle 4 and the second baffle 5 can be opened and closed; the Y direction is the same, and No. two motor 11, shaft coupling 12, No. two positive and negative lead screw 10, No. three baffle 6 and No. four baffle 7 and two baffles on the opposite helicitic texture of screw thread direction constitute screw drive system, can realize the action of opening and shutting of No. three baffle 6 and No. four baffle 7. So that the size of the beam outlet of the ray source in X, Y can be adjusted in two directions.
When the radiation source collimator is adjusted to different sizes, the central line of a radiation source beam outlet is always coincided with the central line of a cone beam radiation source outlet 15, and the central line of the radiation source beam outlet is composed of a first baffle 4, a second baffle 5, a third baffle 6 and a fourth baffle 7.
The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.
Claims (6)
1. A radiation source collimator, characterized by: the guide rail structure comprises a base plate (1), wherein a first guide rail (2) is arranged on the base plate (1) along the X direction, a second guide rail (3) is arranged on the base plate (1) along the Y direction, a first baffle (4) and a second baffle (5) are arranged on the first guide rail (2) in a sliding manner, and a third baffle (6) and a fourth baffle (7) are arranged on the second guide rail (3) in a sliding manner;
no. one is connected through positive and negative lead screw (8) between baffle (4) and No. two baffles (5), and positive and negative lead screw (8) are through a motor (9) drive, connect through positive and negative lead screw (10) No. two between No. three baffle (6) and No. four baffles (7), positive and negative lead screw (10) are through motor (11) drive No. two.
2. A radiation source collimator according to claim 1, characterized in that: the first baffle (4) and the second baffle (5) are respectively provided with a thread structure with opposite thread directions and are in threaded connection with the first positive and negative screw rod (8);
no. three baffle (6) and No. four baffle (7) are provided with the helicitic texture that screw thread opposite direction respectively, and all connect with two positive and negative lead screw (10) screw threads soon.
3. A radiation source collimator according to claim 1, characterized in that: the output shaft of the first motor (9) is in transmission connection with the first positive and negative screw rod (8), and the output shaft of the second motor (11) is in transmission connection with the second positive and negative screw rod (10) through the coupler (12).
4. A radiation source collimator according to claim 1, characterized in that: two sliding blocks (13) are arranged on the first guide rail (2) and the second guide rail (3) in a sliding mode, the two sliding blocks (13) on the first guide rail (2) are respectively connected with the first baffle (4) and the second baffle (5), and the two sliding blocks (13) on the second guide rail (3) are respectively connected with the third baffle (6) and the fourth baffle (7).
5. A radiation source collimator according to claim 1, characterized in that: no. one baffle (4), No. two baffles (5), No. three baffles (6) and No. four baffles (7) constitute groined type structure, awl beam source export (15) have been seted up on base plate (1), awl beam source export (15) pass groined type structure center department.
6. A radiation source collimator according to claim 1, characterized in that: the first motor (9) and the second motor (11) are fixedly arranged on the substrate (1) through a motor support (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122819507.8U CN216250013U (en) | 2021-11-17 | 2021-11-17 | Radiation source collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122819507.8U CN216250013U (en) | 2021-11-17 | 2021-11-17 | Radiation source collimator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216250013U true CN216250013U (en) | 2022-04-08 |
Family
ID=80944657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122819507.8U Active CN216250013U (en) | 2021-11-17 | 2021-11-17 | Radiation source collimator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216250013U (en) |
-
2021
- 2021-11-17 CN CN202122819507.8U patent/CN216250013U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A ray source collimator Effective date of registration: 20221223 Granted publication date: 20220408 Pledgee: Taixi sub branch of Taian Bank Co.,Ltd. Pledgor: Shandong Medical Health Technology Co.,Ltd. Registration number: Y2022980027417 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231208 Granted publication date: 20220408 Pledgee: Taixi sub branch of Taian Bank Co.,Ltd. Pledgor: Shandong Medical Health Technology Co.,Ltd. Registration number: Y2022980027417 |