CN111358480A - Exposure hand brake operating device with learning mode and exposure hand brake operating method - Google Patents
Exposure hand brake operating device with learning mode and exposure hand brake operating method Download PDFInfo
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- CN111358480A CN111358480A CN202010207318.2A CN202010207318A CN111358480A CN 111358480 A CN111358480 A CN 111358480A CN 202010207318 A CN202010207318 A CN 202010207318A CN 111358480 A CN111358480 A CN 111358480A
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/54—Control of apparatus or devices for radiation diagnosis
- A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses an exposure hand brake operating device with a learning mode and an exposure hand brake operating method; the device comprises a base, wherein a support frame is fixedly arranged on the base, and a control panel is fixedly arranged at the top of the support frame; an upper limiting plate and a lower limiting plate are fixedly arranged on the support frame, a lead screw which is vertically distributed is arranged between the upper limiting plate and the lower limiting plate, a slide block driven by the lead screw is sleeved on the lead screw, a pressing piece is fixedly arranged on the slide block, and a motor used for driving the lead screw is arranged at the end part of the lead screw; a hand brake fixing piece is arranged below the pressing piece; the control panel is provided with an operation mode switch, a first knob, a second knob, a first control button, a second control button, a first position recording button and a second position recording button. The invention can realize the automatic operation of the exposure hand brake and avoid the harm of the exposure equipment to human bodies. The invention can be suitable for exposure hand brakes of different types and different types, has good application range, and can realize accurate operation of the exposure hand brake.
Description
Technical Field
The present invention relates to an exposure hand brake operating device having a learning mode and an exposure hand brake operating method.
Background
The medical diagnosis X-ray equipment is a medical diagnosis apparatus commonly used in hospitals, and human tissues can be subjected to fluoroscopy and photography through X-rays emitted by the medical diagnosis X-ray equipment.
At present, most of exposure hand brakes used for photography in medical diagnostic X-ray equipment are mechanical hand brakes. The exposure hand brake has the first operating button and the second operating button on the top, and the operation process comprises two stages. The first stage is as follows: the first operating button is manually pressed until the first operating button is flush with the second operating button. The second stage is as follows: the first operating button and the second operating button are manually pressed simultaneously until the first operating button and the second operating button are flush with the top of the exposure hand brake. And the time that the first operating button and the second operating button are flush with the top of the exposure hand brake is the exposure time of the medical diagnostic X-ray equipment.
The X-rays emitted by medical diagnostic X-ray equipment are somewhat harmful to the operator. In order to protect the operator from radiation, when the hospital uses the medical diagnostic X-ray equipment, the medical diagnostic X-ray equipment is usually isolated from the operator operating the exposure hand brake, that is, the medical diagnostic X-ray equipment and the operator operating the exposure hand brake are respectively located in different rooms, and a separation wall is arranged between the two rooms.
Medical diagnostic X-ray devices are manufactured by manufacturers and require electromagnetic compatibility testing before they are marketed. This test requires the medical diagnostic X-ray apparatus to be placed in an anechoic chamber. The anechoic chamber is a six-side shielded space, at the moment, an exposure hand brake of the medical diagnosis X-ray equipment can only be placed in the anechoic chamber, and an electric wire of the exposure hand brake penetrates through the wall of the anechoic chamber and extends to the outside of the anechoic chamber, so that the arrangement of the medical diagnosis X-ray equipment can be changed, and a test result is influenced, therefore, an operator operating the exposure hand brake to perform electromagnetic field detection can only be in the same room as the medical diagnosis X-ray.
In the process of performing electromagnetic compatibility detection on the medical diagnostic X-ray equipment, the medical diagnostic X-ray equipment inevitably causes certain damage to an operator.
At present, no equipment capable of automatically operating an exposure hand brake in an anechoic chamber to detect an electromagnetic field of a medical diagnostic X-ray device exists.
Disclosure of Invention
The present invention provides an exposure hand brake operating device and an exposure hand brake operating method with a learning mode to overcome the above-mentioned defects in the prior art.
The invention solves the technical problems through the following technical scheme:
an exposure hand brake operating device with a learning mode comprises a base, wherein a support frame is fixedly arranged on the base, and a control panel is fixedly arranged at the top of the support frame; an upper limiting plate and a lower limiting plate are fixedly arranged on the support frame, a lead screw which is vertically distributed is arranged between the upper limiting plate and the lower limiting plate, a slide block driven by the lead screw is sleeved on the lead screw, a pressing piece is fixedly arranged on the slide block, and a motor used for driving the lead screw is arranged at the end part of the lead screw; a hand brake fixing piece is arranged below the pressing piece; the control panel is provided with a running mode switch, a first knob for setting the waiting time before automatic execution, a second knob for setting the exposure time of an exposure hand brake, a first control button for controlling the descending of the pressing piece, a second control button for controlling the ascending of the pressing piece, a first position recording button and a second position recording button for recording the position of the pressing piece on the screw rod; the exposure hand brake operating device with the learning mode further comprises a control module, and the operation mode switch, the first knob, the second knob, the first control button, the second control button, the first position recording button, the second position recording button and the motor are all connected to the control module; the exposure hand brake operating device with the learning mode further comprises a simulated hand component for simulating the impedance of an operator, and the simulated hand component is connected to the surface of the exposure hand brake; the peak value of the electromagnetic radiation value of the exposure hand brake operating device with the learning mode is lower than 20dB [ mu ] V/m when the frequency is 30MHz-230MHz, and is lower than 27dB [ mu ] V/m when the frequency is 230MHz-1000 MHz.
Preferably, the motor is a stepper motor.
Preferably, the motor is arranged below the lower limiting plate.
Preferably, the control panel is further provided with a display screen for displaying the running state of the device, and the display screen is connected to the control module.
Preferably, the simulation hand assembly comprises a metal foil connected to the exposure hand brake, a resistance-capacitance assembly and a grounding wire, the resistance-capacitance assembly comprises a capacitor and a resistor connected in series with the capacitor, the metal foil and the capacitor are connected through a connecting wire, and the grounding wire is connected to the resistor.
Preferably, the exposure hand brake operating device with the learning mode further comprises a housing, the housing is located below the control panel, the screw rod is located inside the housing, and the pressing piece penetrates through the housing and extends to the outside of the housing.
An exposure hand brake operating method using the exposure hand brake operating device having the learning mode as described above, comprising the steps of:
step 1, vertically fixing an exposure hand brake on a hand brake fixing piece, wherein a first operating button and a second operating button on the top of the exposure hand brake are both higher than the top of the hand brake fixing piece;
step 2, adjusting the operation mode switch to a learning mode, adjusting the first knob to set a waiting time T1 before automatic execution, adjusting the second knob to set an exposure time T2 of an exposure hand brake, and recording the T1 and the T2 to the control module;
step 3, pressing the first control button to enable the pressing piece to descend, when the first operation button and the second operation button of the exposure hand brake are aligned by the pressing piece, the pressing piece does not move any more, then pressing the first position recording button, and recording the position of the pressing piece, which is located on the lead screw at the moment, to the control module, wherein the position is the first position of the lead screw;
step 4, pressing the first control button to enable the pressing piece to continuously descend, when the first operation button and the second operation button of the exposure hand brake are both flush with the top of the exposure hand brake, the pressing piece does not move any more, then pressing the second position recording button, and recording the position of the pressing piece, which is located on the lead screw at the moment, to the control module, wherein the position is the second position of the lead screw;
and 5, adjusting the operation mode switch to an automatic execution mode, wherein the pressing piece does not move after moving above the exposure hand brake under the control of the control module, the pressing piece starts to descend after waiting for T1 time, the pressing piece does not move when located at the first position of the screw rod, the pressing piece continues to descend after waiting for T3 time, the pressing piece does not move when located at the second position of the screw rod, and the pressing piece ascends after waiting for T2 time.
Preferably, in step 3, when the first operating button and the second operating button of the exposure hand brake move downwards together due to the fact that the pressing piece descends too much, the second control button is pressed, and the pressing piece is made to ascend until the first operating button and the second operating button of the exposure hand brake are flush.
Preferably, in step 5, the time T3 is a preset time duration.
The invention has the beneficial effects that: the invention can realize the automatic operation of the exposure hand brake in the anechoic chamber, control the exposure process of the medical diagnosis X-ray equipment to be tested, realize the compartment operation of the equipment to be tested and avoid the personnel from receiving unnecessary X-ray irradiation. The device can accurately simulate the state of an operator in the field, can avoid the injury of X-ray irradiation to the operator, and can also ensure the measurement precision when measuring the equipment to be measured. The invention has learning function, can be suitable for exposure hand brakes of different types and different types, and has good application range. Through this learning function, can realize the accurate operation to the exposure hand brake.
Drawings
FIG. 1 is a schematic structural diagram of an exposure hand brake operating device according to a preferred embodiment of the present invention.
FIG. 2 is a schematic diagram of the internal structure of the exposure hand brake operating device according to the preferred embodiment of the present invention.
FIG. 3 is a flowchart illustrating an operation method of the exposure hand brake according to the present invention.
Detailed Description
The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.
As shown in fig. 1 and 2, an exposure hand brake operating device with learning mode includes a base 10, a support frame 11 is fixed on the base 10, and a control panel 20 is fixed on the top of the support frame 11.
An upper limiting plate 12 and a lower limiting plate 13 are fixedly arranged on the support frame 11, and vertically distributed screw rods 30 are arranged between the upper limiting plate 12 and the lower limiting plate 13.
The screw rod 30 is sleeved with a screw rod driven sliding block 31, a pressing piece 32 is fixedly arranged on the sliding block 31, and the end part of the screw rod 30 is provided with a motor for driving the screw rod. In this embodiment, the motor is a stepping motor; the motor is arranged below the lower limiting plate.
In this embodiment, the motor is located below the lower limiting plate, and a protective casing is disposed outside the motor, which cannot be directly seen in the drawings, and therefore is not marked in the drawings.
A hand brake fixing member 40 is provided under the pressing member 32.
The control panel 20 is provided with an operation mode switch 23, a first knob 21 for setting the waiting time before automatic execution, a second knob 22 for setting the exposure time of the exposure hand brake, a first control button 41 for controlling the descending of the pressing piece, a second control button 42 for controlling the ascending of the pressing piece, a first position recording button 51 and a second position recording button 52 for recording the position of the pressing piece on the screw rod.
The exposure hand brake operating device with the learning mode further comprises a control module (not shown in the figure), and the operation mode switch, the first knob, the second knob, the first control button, the second control button, the first position recording button, the second position recording button and the motor are connected to the control module.
The control panel 20 is further provided with a display screen 24 for displaying the operation state of the device, and the display screen is connected to the control module.
The exposure hand brake operating device with the learning mode further includes a simulated hand assembly (not shown) for simulating the impedance of the operator, the simulated hand assembly being attached to the surface of the exposure hand brake.
The simulation hand assembly comprises a metal foil connected to the exposure hand brake, a resistance-capacitance assembly and a grounding wire, the resistance-capacitance assembly comprises a capacitor and a resistor connected in series with the capacitor, the metal foil and the capacitor are connected through a connecting wire, and the grounding wire is connected to the resistor. The capacitance C is 220pF ± 20%, and the resistance is 510 Ω ± 10%. The length of the connecting wire between the metal foil and the capacitor is about 1 m. If a longer bond wire is required, the total inductance of the bond wire is less than 1.4 muh at a measurement frequency of approximately 30 MHz.
The exposure hand brake operating device with the learning mode further comprises a shell 14, the shell is located below the control panel, the screw rod is located inside the shell, and the pressing piece penetrates through the shell and extends to the outside of the shell.
The peak value of the electromagnetic radiation value of the exposure hand brake operating device with the learning mode is lower than 20dB muV/m when the frequency is 30MHz-230MHz, and is lower than 27dB muV/m when the frequency is 230MHz-1000 MHz. Therefore, when the electromagnetic field detection is carried out on the medical diagnosis X-ray equipment in the anechoic chamber, the electromagnetic radiation generated by the exposure hand brake operating device can not influence the detection result, thereby ensuring the accuracy of the electromagnetic field detection.
In order to achieve the purpose, a proper electronic component can be selected in the device or a shielding part is added outside the electronic component, so that the electromagnetic radiation value peak value of the whole device is lower than 20dB [ mu ] V/m when the frequency is 30MHz-230MHz, and is lower than 27dB [ mu ] V/m when the frequency is 230MHz-1000 MHz. The foregoing manner is a conventional manner, and will not be described herein again.
As shown in fig. 3, an exposure hand brake operating method using the exposure hand brake operating device having the learning mode as described above includes the steps of:
step 1, the exposure hand brake is vertically fixed on the hand brake fixing piece, and a first operating button and a second operating button on the top of the exposure hand brake are both higher than the top of the hand brake fixing piece. The first operating button and the second operating button on the top of the exposure hand brake are exposure operating parts of the exposure hand brake.
And 2, adjusting the operation mode switch to a learning mode, adjusting the first knob to set the waiting time T1 before automatic execution, adjusting the second knob to set the exposure time T2 of the exposure hand brake, and recording the T1 and the T2 to the control module.
The time T1 may also be referred to as the escape time, i.e., the time between when the operator sets the time and when the exposure hand brake begins to operate. In the time, the operator can leave the anechoic chamber where the medical diagnosis X-ray equipment and the exposure hand brake are located, so that the harm to the human body caused by the radiation generated by the medical diagnosis X-ray equipment can be avoided. T1 can be determined based on the size of the anechoic chamber and the pace of the operator.
The time T2 is the exposure time of the exposure hand brake. Different exposure hand brakes have certain difference of exposure time, so the exposure hand brakes can be determined according to specific models of the exposure hand brakes.
And 3, pressing the first control button to enable the pressing piece to descend, enabling the first operation button and the second operation button of the exposure hand brake to be flush when the pressing piece does not move any more, then pressing the first position recording button, and recording the position, located on the lead screw, of the pressing piece to the control module, wherein the position is the first position of the lead screw.
The first position of the screw rod of the exposure hand brake is different without the model. The device is suitable for exposure hand brakes of various models in a learning mode.
In step 3, when the first operating button and the second operating button of the exposure hand brake move downwards together due to the fact that the pressing piece descends too much, the second control button is pressed, and the pressing piece is made to ascend until the first operating button and the second operating button of the exposure hand brake are flush.
And 4, pressing the first control button to enable the pressing piece to continuously descend, when the first operation button and the second operation button of the exposure hand brake are both flush with the top of the exposure hand brake, the pressing piece does not move any more, then pressing the second position recording button, and recording the position, located on the lead screw, of the pressing piece to the control module, wherein the position is the second position of the lead screw.
The second position of the screw rod can be different without using the exposure hand brake of the model. The device is suitable for exposure hand brakes of various models in a learning mode.
And 5, adjusting the operation mode switch to an automatic execution mode, wherein the pressing piece does not move after moving above the exposure hand brake under the control of the control module, the pressing piece starts to descend after waiting for T1 time, the pressing piece does not move when located at the first position of the screw rod, the pressing piece continues to descend after waiting for T3 time, the pressing piece does not move when located at the second position of the screw rod, and the pressing piece ascends after waiting for T2 time.
In this embodiment, in step 5, the time T3 is a preset time duration. Specifically, T3 may be set to 3 seconds.
If the execution mode is not needed any more, the execution mode ends.
If the execution mode needs to be performed again, step 5 is repeated.
In actual use, the operations of step 1, step 2, step 3 and step 4 may be performed outside the anechoic chamber (or inside the anechoic chamber) by using the exposure hand brake operating device of the present invention for the exposure hand brake of the medical diagnostic X-ray apparatus to be detected.
It should be noted that the time T1 is set according to the size of the anechoic chamber, the position of the exposure hand brake operating device of the present invention in the anechoic chamber, the pace of the operator, and the time for opening and closing the door of the anechoic chamber.
Then, a medical diagnostic X-ray apparatus to be tested, an exposure hand brake for controlling the exposure of the medical diagnostic X-ray apparatus and the exposure hand brake operating device of the invention are placed together in a dark electric wave room with six-sided shielding.
The metal foil of the simulated hand assembly can be fixed on the outer part of the exposure hand brake in a mode of adhesive tape and the like so as to simulate the holding of a hand. The grounding wire of the simulated hand assembly is grounded on the ground of the anechoic chamber.
When the electromagnetic field detection is carried out on the medical diagnosis X-ray equipment, the state of the hand-held exposure hand brake of an operator is simulated by arranging the simulation hand assembly, so that the accuracy of the electromagnetic field detection carried out on the medical diagnosis X-ray equipment can be improved.
The operator performs "adjust operation mode switch to automatic execution mode" in step 5, and then leaves the anechoic chamber and closes the anechoic chamber.
At this time, the exposure hand brake operating device in the anechoic chamber performs step 5 to realize automatic exposure of the medical diagnostic X-ray equipment to be detected, and further complete electromagnetic compatibility detection of the medical diagnostic X-ray equipment in the anechoic chamber.
The invention can realize the automatic operation of the exposure hand brake in the anechoic chamber, control the exposure process of the medical diagnosis X-ray equipment to be tested, realize the compartment operation of the equipment to be tested and avoid the personnel from receiving unnecessary X-ray irradiation.
The device can accurately simulate the state of an operator in the field, can avoid the injury of X-ray irradiation to the operator, and can also ensure the measurement precision when measuring the equipment to be measured.
The invention has learning function, can be suitable for exposure hand brakes of different types and different types, and has good application range. Through this learning function, can realize the accurate operation to the exposure hand brake.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (9)
1. An exposure hand brake operating device with a learning mode is characterized by comprising a base, wherein a support frame is fixedly arranged on the base, and a control panel is fixedly arranged at the top of the support frame; an upper limiting plate and a lower limiting plate are fixedly arranged on the support frame, a lead screw which is vertically distributed is arranged between the upper limiting plate and the lower limiting plate, a slide block driven by the lead screw is sleeved on the lead screw, a pressing piece is fixedly arranged on the slide block, and a motor used for driving the lead screw is arranged at the end part of the lead screw; a hand brake fixing piece is arranged below the pressing piece; the control panel is provided with a running mode switch, a first knob for setting the waiting time before automatic execution, a second knob for setting the exposure time of an exposure hand brake, a first control button for controlling the descending of the pressing piece, a second control button for controlling the ascending of the pressing piece, a first position recording button and a second position recording button for recording the position of the pressing piece on the screw rod; the exposure hand brake operating device with the learning mode further comprises a control module, and the operation mode switch, the first knob, the second knob, the first control button, the second control button, the first position recording button, the second position recording button and the motor are all connected to the control module; the exposure hand brake operating device with the learning mode further comprises a simulated hand component for simulating the impedance of an operator, and the simulated hand component is connected to the surface of the exposure hand brake; the peak value of the electromagnetic radiation value of the exposure hand brake operating device with the learning mode is lower than 20dB [ mu ] V/m when the frequency is 30MHz-230MHz, and is lower than 27dB [ mu ] V/m when the frequency is 230MHz-1000 MHz.
2. The exposure hand brake operating device with learning mode according to claim 1, wherein the motor is a stepping motor.
3. The exposure hand brake operating device with learning mode as claimed in claim 1, wherein the motor is provided below the lower limiting plate.
4. The apparatus of claim 1, wherein the control panel further comprises a display screen for displaying the operation status of the apparatus, and the display screen is connected to the control module.
5. The exposure hand brake operating device with learning mode as claimed in claim 1, wherein the analog hand assembly comprises a metal foil connected to the exposure hand brake, a resistance-capacitance assembly and a ground line, the resistance-capacitance assembly comprises a capacitor and a resistor connected in series with the capacitor, the metal foil and the capacitor are connected by a connecting line, and the ground line is connected to the resistor.
6. The exposure hand brake operating device with learning mode of claim 1, further comprising a housing located below the control panel, the lead screw located inside the housing, and the pressing member inserted through the housing and extending to the outside of the housing.
7. An exposure hand brake operating method using the exposure hand brake operating apparatus having the learning mode according to any one of claims 1 to 6, comprising the steps of:
step 1, vertically fixing an exposure hand brake on a hand brake fixing piece, wherein a first operating button and a second operating button on the top of the exposure hand brake are both higher than the top of the hand brake fixing piece;
step 2, adjusting the operation mode switch to a learning mode, adjusting the first knob to set a waiting time T1 before automatic execution, adjusting the second knob to set an exposure time T2 of an exposure hand brake, and recording the T1 and the T2 to the control module;
step 3, pressing the first control button to enable the pressing piece to descend, when the first operation button and the second operation button of the exposure hand brake are aligned by the pressing piece, the pressing piece does not move any more, then pressing the first position recording button, and recording the position of the pressing piece, which is located on the lead screw at the moment, to the control module, wherein the position is the first position of the lead screw;
step 4, pressing the first control button to enable the pressing piece to continuously descend, when the first operation button and the second operation button of the exposure hand brake are both flush with the top of the exposure hand brake, the pressing piece does not move any more, then pressing the second position recording button, and recording the position of the pressing piece, which is located on the lead screw at the moment, to the control module, wherein the position is the second position of the lead screw;
and 5, adjusting the operation mode switch to an automatic execution mode, wherein the pressing piece does not move after moving above the exposure hand brake under the control of the control module, the pressing piece starts to descend after waiting for T1 time, the pressing piece does not move when located at the first position of the screw rod, the pressing piece continues to descend after waiting for T3 time, the pressing piece does not move when located at the second position of the screw rod, and the pressing piece ascends after waiting for T2 time.
8. The method of operating an exposure hand brake of claim 7, wherein in step 3, when the first operating button and the second operating button of the exposure hand brake move down together due to the pressing member dropping too much, the second control button is pressed to raise the pressing member until the first operating button and the second operating button of the exposure hand brake are flush.
9. The method for operating an exposure hand brake of claim 7, wherein in step 5, the time T3 is a predetermined time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010207318.2A CN111358480B (en) | 2020-03-23 | 2020-03-23 | Exposure hand brake operating device with learning mode and exposure hand brake operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010207318.2A CN111358480B (en) | 2020-03-23 | 2020-03-23 | Exposure hand brake operating device with learning mode and exposure hand brake operating method |
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| Publication Number | Publication Date |
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| CN111358480A true CN111358480A (en) | 2020-07-03 |
| CN111358480B CN111358480B (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010207318.2A Active CN111358480B (en) | 2020-03-23 | 2020-03-23 | Exposure hand brake operating device with learning mode and exposure hand brake operating method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0923275A2 (en) * | 1997-12-11 | 1999-06-16 | General Electric Company | X-ray handswitch with integral indicator means |
| CN204345207U (en) * | 2014-09-12 | 2015-05-20 | 深圳安科高技术股份有限公司 | A kind of hand brake support |
| CN205992288U (en) * | 2016-08-30 | 2017-03-01 | 杨世强 | A kind of remote control unit of X-ray machine exposure handbrake |
| CN206060952U (en) * | 2016-08-31 | 2017-03-29 | 中南大学湘雅二医院 | A kind of movable X-ray machine exposure control unit and movable X-ray machine |
| CN207394314U (en) * | 2017-10-25 | 2018-05-22 | 深圳市安健科技股份有限公司 | A kind of free fixing device of medical rim brake |
-
2020
- 2020-03-23 CN CN202010207318.2A patent/CN111358480B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0923275A2 (en) * | 1997-12-11 | 1999-06-16 | General Electric Company | X-ray handswitch with integral indicator means |
| CN204345207U (en) * | 2014-09-12 | 2015-05-20 | 深圳安科高技术股份有限公司 | A kind of hand brake support |
| CN205992288U (en) * | 2016-08-30 | 2017-03-01 | 杨世强 | A kind of remote control unit of X-ray machine exposure handbrake |
| CN206060952U (en) * | 2016-08-31 | 2017-03-29 | 中南大学湘雅二医院 | A kind of movable X-ray machine exposure control unit and movable X-ray machine |
| CN207394314U (en) * | 2017-10-25 | 2018-05-22 | 深圳市安健科技股份有限公司 | A kind of free fixing device of medical rim brake |
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| Publication number | Publication date |
|---|---|
| CN111358480B (en) | 2023-04-28 |
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