CN105757870B - Ventilation system and ventilation control method of medical imaging equipment - Google Patents
Ventilation system and ventilation control method of medical imaging equipment Download PDFInfo
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- CN105757870B CN105757870B CN201610149523.1A CN201610149523A CN105757870B CN 105757870 B CN105757870 B CN 105757870B CN 201610149523 A CN201610149523 A CN 201610149523A CN 105757870 B CN105757870 B CN 105757870B
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- air
- ventilation system
- air outlet
- patient
- imaging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
Abstract
The invention provides a ventilation system of a medical imaging device, the medical imaging device comprises a frame and an imaging passage arranged in the frame and used for accommodating a sickbed and a patient, the ventilation system comprises: a fan; the air outlet is arranged in the imaging channel and ventilates the imaging channel; the air guide pipe is connected with the fan and the air outlet; and the wind direction adjusting component is arranged at the air outlet and used for adjusting the wind direction of the air outlet. According to the ventilation system of the medical imaging equipment, the direction and the size of the air outlet can be conveniently adjusted according to different requirements of patients to be imaged, and the comfort level of the detected patients is effectively improved.
Description
Technical Field
The invention relates to a medical imaging device, in particular to a ventilation system for ventilating an imaging channel of the medical imaging device and a ventilation control method.
Background
Existing medical imaging apparatuses, such as a computed tomography apparatus (hereinafter, referred to as CT apparatus), a magnetic resonance imaging apparatus (hereinafter, referred to as MR apparatus), and a positron emission tomography apparatus (hereinafter, referred to as PET-CT apparatus), include a gantry for imaging and an imaging channel disposed inside the gantry, and when imaging is performed, a patient is carried by a movable bed outside the gantry and moved into the imaging channel for imaging.
However, the imaging channels of these imaging devices are narrow, the diameter of the channels is generally only about 600mm, and for example, when the MR device is used for imaging, the magnetic field may affect the SAR of the patient, which may cause the patient in the imaging channels to generate heat and may cause claustrophobia.
To alleviate this phenomenon as much as possible, ventilation devices are often provided in the imaging tunnel to ventilate the air in the imaging tunnel, thereby improving patient comfort and reducing patient discomfort in confined spaces.
The following is an example of a ventilation system of a conventional MR apparatus. Fig. 1 is a schematic rear view of a prior art MR apparatus; fig. 2 is an enlarged schematic view of a portion a (outlet) in fig. 1. As shown in fig. 1 and 2, the magnetic resonance system 1 includes a gantry 2 and an imaging channel 10 disposed inside the gantry, ventilation in the imaging channel 10 is generally an air outlet 11 formed in two fixed directions on an upper wall in the imaging channel 10, and the air outlet 11 is generally disposed at a rear end of the imaging channel 10 and is bilaterally symmetric.
When imaging, the patient needs to take different postures according to different imaging parts, and the moving degree of the sickbed is different. However, in the ventilation system of the existing MR device, the wind direction of the air outlet 11 cannot be adjusted, and only the air volume can be adjusted, and if the air outlet direction of the air outlet is exactly the face of the patient, the patient feels uncomfortable; the ventilation system only has two strip-shaped air outlets 11 with the length of about 110mm, and the length of the air outlets 11 only accounts for about 12% of the circumference of the imaging channel 10; the air quantity in the imaging channel 10 is uneven, the local air quantity is large, and the patient experience is not good; on the other hand, the air volume is inconvenient to adjust, can be adjusted manually only and is not intelligent; furthermore, the existing ventilation system simply extracts air in the imaging channel or uses air in the imaging room for ventilation, which cannot further improve the comfort of the patient, for example, the air in the imaging room has the smell of disinfectant or contrast medium.
Disclosure of Invention
The invention aims to solve the problems of various ventilation systems of the existing imaging equipment and further improve the comfort of a patient in the imaging process.
To solve the problems, the present invention provides a ventilation system of a medical imaging apparatus including a gantry and an imaging tunnel provided in the gantry for accommodating a patient bed and a patient, the ventilation system comprising:
a fan;
the air outlet is arranged in the imaging channel and ventilates the imaging channel;
the air guide pipe is connected with the fan and the air outlet;
and the wind direction adjusting component is arranged at the air outlet and used for adjusting the air outlet direction of the air outlet.
Optionally, the wind direction adjusting assembly includes:
the air deflector is used for adjusting the wind direction;
the rotating shaft drives the air deflector to rotate; and
and the side plate is connected with the air guide plate and the rotating shaft.
Optionally, in the ventilation system, the air inlet is provided with a vent hole,
the air outlet is an arc-shaped air outlet formed at a position above a sickbed on the inner wall of the imaging channel.
Optionally, in the ventilation system, the air inlet is provided with a vent hole,
the arc length of the air outlet is more than or equal to 30% of the circumference of the imaging channel.
Optionally, the ventilation system is characterized in that,
comprises at least two linked air deflectors.
Optionally, in the ventilation system, the air inlet is provided with a vent hole,
the two ends of the rotating shaft are provided with tooth-shaped meshing marks, and the wind direction adjusting assemblies are meshed together through the tooth-shaped meshing marks of the rotating shaft.
Optionally, in the ventilation system, the air inlet is provided with a vent hole,
the rotating shafts of the at least two interlocked wind direction adjusting components are rotating shafts made of the same soft material.
Optionally, in the ventilation system, the air inlet is provided with a vent hole,
the rotating shaft is driven by a motor and a transmission mechanism which are arranged far away from the magnetic field.
Optionally, in the ventilation system, the air inlet is provided with a vent hole,
the wind direction adjusting assembly comprises at least two parallel air deflectors.
Optionally, the ventilation system further includes:
an air purifier for purifying the air output to the imaging channel.
Optionally, the ventilation system further includes:
the temperature controller is used for heating or cooling the air output to the imaging channel; and/or
And a humidity controller for performing humidification or dehumidification processing on the air output to the imaging channel.
The invention also provides a ventilation control method of the medical imaging equipment, which comprises the following steps:
confirming ventilation requirements in the imaging channel;
and adjusting the direction of the air outlet and/or the size of the air outlet according to the requirement.
Alternatively, the ventilation control method as described,
the ventilation requirement is determined according to the body position of the patient and/or the drive position of the patient bed.
Alternatively, the ventilation control method as described,
the ventilation requirement is determined by the temperature within the tunnel.
Alternatively, the ventilation control method as described,
the temperature in the channel is the result of the calculation and comparison of the temperatures at least two positions.
According to the ventilation system, the larger arc-shaped air outlet is used, the area of the air outlet is larger, the air outlet range is wider, the aperture airflow is more uniform, and the use feeling is improved; the wind direction is automatically adjusted according to different imaging body positions and the detected temperature, an intelligent wind direction adjusting system is provided, and the comfort of an imager is improved; the wind direction is adjusted on the premise of not influencing the imaging of the imaging equipment by the driving device and the transmission mechanism which are arranged outside the imaging channel; further increased air purifier to ventilation system, purified the air of exporting in the formation of image passageway, improved patient's comfort level.
Drawings
Fig. 1 is a schematic rear view of a prior art MR apparatus;
FIG. 2 is an enlarged schematic view of portion A (outlet) of FIG. 1;
FIG. 3 is a schematic view of a ventilation system of an MR apparatus of an embodiment of the invention;
FIG. 4 is an enlarged schematic view of portion B (outlet) of FIG. 3;
FIG. 5 is a schematic view of a wind direction adjustment assembly of an embodiment of the present invention;
FIG. 6 is a schematic view of two wind direction adjustment assemblies of an embodiment of the present invention when connected;
FIG. 7 is a schematic view of a rotary shaft drive of an embodiment of the present invention;
FIG. 8 is a schematic block diagram of a ventilation system of an embodiment of the present invention;
fig. 9 is a schematic view of a ventilation system of an MR apparatus with an air purification function according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
For convenience of explanation, the embodiment of the present invention is described by taking an MR apparatus as an example, but the present invention is not limited thereto, and the technical solutions mentioned in the present invention can be applied to other medical apparatuses that perform imaging or therapy in a narrow space.
Fig. 3 is a schematic view of a ventilation system of an MR device according to an embodiment of the invention; fig. 4 is an enlarged schematic view of a portion B (air outlet) in fig. 3. As shown in fig. 3 and 4, a bed guide rail is disposed below the inner wall of the imaging channel 10, and a bed (not shown) for carrying a patient enters and exits the imaging channel 10 along the guide rail, in this embodiment, the air outlet 20 is disposed on the inner wall of the imaging channel 10, the inner surface above the bed is arc-shaped, and the larger arc-shaped air outlet 20 is beneficial to forming uniform air outlet in the imaging channel 10. The air outlet 20 described in the present invention is no less than about 30% of the imaging channel perimeter.
FIG. 5 is a schematic view of a wind direction adjustment assembly of an embodiment of the present invention. As shown in fig. 5, the wind direction adjusting assembly 21 includes two wind deflectors 211, two side plates 212 and a rotating shaft 22, the two side plates 212 are fixed at two ends of the end of the rotating shaft 22, the two wind deflectors 211 are fixed between the two side plates 212 in parallel in a certain direction, and two end faces of the end of the rotating shaft 22 are provided with tooth-shaped notches 221.
In the wind direction adjusting assembly 21, the wind deflector 211 may also be formed by one or three wind deflectors 211 parallel to each other in a certain direction. The air guiding plate 211 may also be a flat plate or an arc panel.
FIG. 6 is a schematic view of two wind direction adjustment assemblies of an embodiment of the present invention when connected. As shown in fig. 6, two wind direction adjusting components 21 are connected to each other via the rotating shafts 22, wherein one wind direction adjusting component 21 and the other wind direction adjusting component 21 are engaged with each other via the adjacent tooth-shaped notches 221, and when any one of the rotating shafts 22 is driven and rotated in the C-D or D-C direction, the other rotating shaft 22 engaged with each other is driven to rotate together, so that the wind direction adjustment of the whole wind direction adjusting component 21 is consistent.
In other embodiments, the wind direction adjusting components 21 are fixed on the inner wall of the imaging channel 10 in a flipping manner, and a plurality of wind direction adjusting components 21 are connected by a rotating shaft 22 made of a flexible material, and the rotating shaft 22 made of the flexible material can keep a bent shape when rotating in the C-D or D-C direction.
Fig. 7 is a schematic view of a rotary shaft drive according to an embodiment of the present invention. In the MR device, the magnetic field at the air outlet position is too strong to place the motor 34, in the invention, the motor 34 for driving the wind direction adjusting component 21 to rotate is arranged at a position far away from the imaging channel 10, and the wind direction adjusting component 21 in the imaging channel 10 is driven by a transmission mechanism. As shown in fig. 7, the motor 34 is disposed at the upper left corner of the frame 2, the rotating shaft 22 is driven by the steel wire 24 to rotate, and the wind direction adjusting assembly 21 is driven by the rotating shaft 22 to change the angle along with the rotation of the rotating shaft 22, so as to control the wind outlet direction. In addition to the upper left corner of the frame 2, the motor may be placed at a position that does not affect the magnetic field, preferably as far away from the magnetic field as possible.
FIG. 8 is a schematic block diagram of a ventilation system of an embodiment of the present invention; as shown in fig. 8, the ventilation system includes: the patient information collector 31 is used for collecting the body position of a patient to be imaged, the height of a person to be imaged and other information; a temperature collector 32 for collecting temperature information in the imaging channel; the controller 33 receives the patient information and the temperature information, and correspondingly controls and drives the motor 34 and the fan 35 of the wind direction adjusting assembly 21 according to the patient information and the temperature information; a motor 34 for adjusting the wind direction adjusting assembly 21 under the control of the controller; the fan 35 generates different air quantities under the control of the controller, and the temperature collector 32 comprises a plurality of temperature detectors arranged at different positions in the imaging channel so as to detect the temperature information of different positions.
The body position of the patient can be obtained according to the selected coil, the driving distance of the sickbed and the like; the height of the patient can be obtained through system input during imaging; after confirming the posture information, the approximate position of the face of the patient can be calculated, and the air outlet is adjusted to blow to the position with higher temperature collected by the temperature collector 32, and meanwhile, the air blowing towards the face of the patient is avoided as much as possible. In addition, the controller 33 can adjust the air volume finely according to the requirement of the patient while automatically adjusting the air volume, and can also control the front-back circulation guiding of the wind direction adjusting component to blow the whole body of the patient.
In order to further improve the comfort of the patient, the ventilation system is additionally provided with an air purification function. Various air purifiers for household or office environment are available, including active air purification and passive adsorption air purification, which cannot be directly used in a magnetic resonance system due to the problem of electromagnetic compatibility. Therefore, the air purification provided by the invention is arranged outside the rack.
Fig. 9 is a schematic view of a ventilation system of an MR apparatus with an air purification function according to an embodiment of the present invention. As shown in fig. 9, in order to reduce the interference of the fan 35 on the magnetic resonance imaging, the fan 35 is disposed at a position away from the rack 2, and the air is sent into the imaging channel 10 through the air duct 45, the fan 35 includes an air inlet 41 and an air outlet 44, and the air outlet 44 is fixedly connected to one end of the air duct 45, as shown in fig. 9, air purifiers 42 may be disposed at the air inlet 41 and the air outlet 44 of the fan 35, respectively, so as to purify the air entering the fan 35 and the air output from the fan 35. The purifier 42 is one or a combination of a plurality of HEPA filter screens, activated carbon filter screens, photocatalysts and electrostatic adsorption filter screens. The air purifier 42 is effective to filter and disinfect dust, disinfectant odors, and contrast odors that may be present in the imaging room environment.
In other embodiments, the air purifier 42 may be disposed at only the air inlet 41 or the air outlet 44, or may be disposed at other positions where the air output to the imaging channel passes through, so as to facilitate replacement or cleaning.
The ventilation system may further include a temperature controller (not shown) for heating or cooling the air supplied to the image forming passage, and may further include a humidity controller (not shown) for humidifying or dehumidifying the air.
According to the ventilation system, the wind direction adjusting component can be intelligently rotated according to parameters such as the position of a sickbed, the imaging position, the height of an imaging patient and the like, the wind direction is adjusted to the most comfortable direction, and the comfort level of the patient in the imaging channel is improved; in the imaging process, a plurality of temperature detectors distributed in the imaging channel acquire the temperatures of different positions in the imaging channel, the system intelligently sets different wind speeds according to the different temperatures, the body of a patient is heated and increased in the imaging process, the acquired temperature is increased, the rotating speed of a fan is correspondingly increased, and the sufficient air volume heat dissipation of the patient is ensured; the air outlet in the imaging channel is arranged in a semi-annular shape, the air outlet area is large, the air flow of the channel is more uniform and stable, the whole imaging channel is filled with airflow, and the comfort of a patient is improved; when the air is blown out from the air outlet, a part of air can be brought in to flow in from the rear end of the imaging channel, the larger the proportion of the length of the air outlet in the circumferential length of the imaging channel is, the more air is brought in, and meanwhile, the air flow rate is more uniform; the wind direction adjusting component can guide in a front-back circulating manner, and provides another experience; the air inlet or the air outlet of the fan is provided with the purifier, so that the air blown to the imaging channel is further purified, the comfort of the patient in the imaging process is improved, and the discomfort of the patient is relieved.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (12)
1. A ventilation system for a medical imaging device, the medical imaging device including a housing and an imaging tunnel disposed in the housing for receiving a patient bed and a patient, the ventilation system comprising:
a fan;
the air outlet is arranged in the imaging channel and ventilates the imaging channel;
the air guide pipe is connected with the fan and the air outlet;
the temperature collectors are distributed in the imaging channel and used for collecting the temperatures of different positions in the imaging channel;
the patient information collector is used for collecting the body position and height information of a patient to be imaged;
the wind direction adjusting component is arranged at the air outlet and used for adjusting the air outlet direction of the air outlet; the controller is connected to a plurality of temperature collectors, patient information collector and wind direction adjusting assembly, and is used for calculating the facial position of the patient according to the position and the height information of the patient to be imaged, and controlling the air outlet direction of the air outlet towards the position with higher temperature in the imaging channel and avoiding blowing towards the facial position of the patient.
2. The ventilation system of claim 1, wherein the wind direction adjustment assembly comprises:
the air deflector is used for adjusting the wind direction;
the rotating shaft drives the air deflector to rotate; and
and the side plate is connected with the air guide plate and the rotating shaft.
3. The ventilation system of claim 2,
the air outlet is an arc-shaped air outlet formed at a position above a sickbed on the inner wall of the imaging channel.
4. The ventilation system of claim 3,
the arc length of the air outlet is more than or equal to 30% of the circumference of the imaging channel.
5. The ventilation system of claim 2,
comprises at least two linked wind direction adjusting components.
6. The ventilation system of claim 5,
the two ends of the rotating shaft are provided with tooth-shaped meshing marks, and the wind direction adjusting assemblies are meshed together through the tooth-shaped meshing marks of the rotating shaft.
7. The ventilation system of claim 5,
the rotating shafts of the at least two interlocked wind direction adjusting components are rotating shafts made of the same soft material.
8. The ventilation system of claim 5,
the rotating shaft is driven by a motor and a transmission mechanism which are arranged far away from the magnetic field.
9. The ventilation system of claim 2,
the wind direction adjusting assembly comprises at least two parallel air deflectors.
10. The ventilation system of claim 1, further comprising:
an air purifier for purifying the air output to the imaging channel.
11. The ventilation system of claim 10, further comprising:
the temperature controller is used for heating or cooling the air output to the imaging channel; and/or
And a humidity controller for performing humidification or dehumidification processing on the air output to the imaging channel.
12. A ventilation control method of a medical imaging apparatus, comprising:
confirming the temperature of different positions in the imaging channel;
collecting body position and height information of a patient to be imaged;
and adjusting the direction of the air outlet to face the position with higher temperature in the imaging channel according to the temperature in the imaging channel, and avoiding blowing air towards the face position of the patient, wherein the temperature in the channel is the result of the calculation and comparison of the temperatures at least two positions.
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| CN201610149523.1A CN105757870B (en) | 2016-03-16 | 2016-03-16 | Ventilation system and ventilation control method of medical imaging equipment |
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| CN105757870B true CN105757870B (en) | 2020-02-07 |
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| GB2569797B (en) * | 2017-12-21 | 2020-03-25 | Elekta ltd | Light circuit for imaging device |
| CN110332627A (en) * | 2019-05-16 | 2019-10-15 | 湖南长海科技发展有限公司 | A kind of therapeutic medical operating room air clarifier |
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| US5982843A (en) * | 1997-10-10 | 1999-11-09 | Analogic Corporation | Closed loop air conditioning system for a computed tomography scanner |
| CN101309731A (en) * | 2005-10-17 | 2008-11-19 | 转换注意力治疗技术有限公司 | Diversionary therapy apparatus and methods and interactive devices |
| CN104939856A (en) * | 2014-03-27 | 2015-09-30 | 西门子公司 | CT system |
| CN105380671A (en) * | 2014-08-29 | 2016-03-09 | 西门子公司 | Rotor for a gantry of a computed tomograpy apparatus |
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| CN101299060B (en) * | 2007-04-30 | 2011-04-06 | 西门子（中国）有限公司 | Ventilating method and system of magnetic resonance image-forming system |
| CN103720472B (en) * | 2012-10-11 | 2016-06-08 | 西门子(深圳)磁共振有限公司 | For ventilation installation and the magnetic resonance imaging system of magnetic resonance imaging system |
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| US3958605A (en) * | 1974-04-23 | 1976-05-25 | Sinko Kogyo Co., Ltd. | Automatic controlling device for maintaining a constant rate of air flow in air-conditioning equipment |
| US5982843A (en) * | 1997-10-10 | 1999-11-09 | Analogic Corporation | Closed loop air conditioning system for a computed tomography scanner |
| CN101309731A (en) * | 2005-10-17 | 2008-11-19 | 转换注意力治疗技术有限公司 | Diversionary therapy apparatus and methods and interactive devices |
| CN104939856A (en) * | 2014-03-27 | 2015-09-30 | 西门子公司 | CT system |
| CN105380671A (en) * | 2014-08-29 | 2016-03-09 | 西门子公司 | Rotor for a gantry of a computed tomograpy apparatus |
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Address after: 201807 No. 2258 Chengbei Road, Jiading Industrial Zone, Jiading District, Shanghai. Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201807 No. 2258 Chengbei Road, Jiading Industrial Zone, Jiading District, Shanghai. Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |