CN202975305U - Magnetic resonance imaging equipment - Google Patents
Magnetic resonance imaging equipment Download PDFInfo
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- CN202975305U CN202975305U CN 201220685943 CN201220685943U CN202975305U CN 202975305 U CN202975305 U CN 202975305U CN 201220685943 CN201220685943 CN 201220685943 CN 201220685943 U CN201220685943 U CN 201220685943U CN 202975305 U CN202975305 U CN 202975305U
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- Prior art keywords
- gas
- superconducting magnet
- air
- imaging apparatus
- filled tube
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Abstract
The utility model discloses magnetic resonance imaging equipment which comprises a superconducting magnet, a gradient coil, a housing, an air compressor, a superconducting magnet cooling head, a first air pipe and a second air pipe, wherein the superconducting magnet cooling head is mounted on the housing, and the superconducting magnet cooling head and the air compressor are communicated by the first air pipe and the second air pipe. The superconducting magnet is provided with a first inner surface, the gradient coil is provided with a first outer surface opposite to the first inner surface, a gap is formed between the first inner surface and the first outer surface, and at least one air bag is arranged in the gap. The magnetic resonance imaging equipment further comprises a first valve, a first air pressure detector and a control circuit, the first valve is arranged on an aerating pipe, the first air pressure detector can measure air pressure in the air bags, and the control circuit can control opening or closing of the first valve according to the measured air pressure in the air bags. Therefore, manual air compensation by maintenance engineers is omitted during periodical maintenance of the magnetic resonance imaging equipment. Meanwhile, when air pressure in the air bags is reduced to a certain degree, air compensation can be automatically started by the aid of air pressure sensors.
Description
[technical field]
The utility model is relevant a kind of MR imaging apparatus.
[technical background]
In MR imaging apparatus, need to be mounted and fixed on for the gradient coil of space encoding the superconducting magnet aperture.A kind of fixed form wherein is that sealed air pocket is fixed, a kind of gradient coil is fixed on MR imaging apparatus in superconducting magnet as what United States Patent (USP) bulletin disclosed for No. US6107799A, it comprises superconducting magnet, gradient coil and airbag, described superconducting magnet has the first inside surface, described gradient coil has the first outside surface of facing mutually with described the first inside surface, form a gap between described the first inside surface and the first outside surface, be provided with at least one in described gap described gradient coil is fixed on airbag in described superconducting magnet.After the long-term use of airbag, thereby because causing air pressure, reduces Leakage Gas, and then the fixed effect of image gradient coil.
Therefore, necessary a kind of improved MR imaging apparatus, the defective that exists to overcome above-mentioned MR imaging apparatus of providing.
[Utility model content]
The refrigerating gas that the purpose of this utility model is to provide a kind of available cooling superconducting magnets to airbag inflate, gradient coil is fixed on the MR imaging apparatus in superconducting magnet.
MR imaging apparatus of the present utility model is to be achieved through the following technical solutions: a kind of MR imaging apparatus, it comprise superconducting magnet, gradient coil, the described superconducting magnet of encirclement shell, gas compressor, be arranged on superconducting magnet cold head on described shell, be communicated with the first tracheae and second tracheae of described superconducting magnet cold head and described gas compressor; Described superconducting magnet has the first inside surface, described gradient coil has the first outside surface of facing mutually with described the first inside surface, form a gap between described the first inside surface and the first outside surface, be provided with in described gap at least one with gas-filled tube, be located at the airbag between described gradient coil and superconducting magnet, described MR imaging apparatus also comprises and is arranged on the first valve on described gas-filled tube, can measures the first pressure test device of described airbag internal gas pressure and the control circuit that can control the first valve opening or close according to measured airbag internal gas pressure.
In preferred embodiment, also be provided with gas-heating apparatus on described gas-filled tube.
In preferred embodiment, described gas-heating apparatus and described control circuit are the integral type setting.
In preferred embodiment, described gas-filled tube comprises the first gas-filled tube of being located at described gas-heating apparatus and described control circuit one side and is located at described gas-heating apparatus and the second gas-filled tube of described control circuit opposite side, and described the first valve is located on the first gas-filled tube.
In preferred embodiment, described the second gas-filled tube is connected with described the first tracheae, the second tracheae or gas compressor.
In preferred embodiment, described the second tracheae is provided with the second valve and the second pressure test device, and described the second valve and the second pressure test device are the integral type setting.
In preferred embodiment, described airbag is provided with the first damping layer of the side of being located thereon and is positioned at the second damping layer of its below.
In preferred embodiment, also be provided with the viscoelasticity beam relative with described airbag in described gap.
In preferred embodiment, described the first valve and described the first pressure test device are the integral type setting.
In preferred embodiment, described the first pressure test device is electronic installation or mechanical hook-up.
Compared with prior art, the refrigerating gas of MR imaging apparatus of the present utility model by cooling superconducting magnets to airbag inflate, so that gradient coil is fixed in superconducting magnet, so arrange, in system's time-based maintenance, the slip-stick artist that do not need repairing carries out manual tonifying Qi; Simultaneously, owing to being provided with the air pressure induction installation, when the air pressure in airbag is reduced to a certain degree, can automatic inflating device.
[description of drawings]
Fig. 1 is the part front view of the utility model MR imaging apparatus.
Fig. 2 is that Fig. 1 is along the cut-open view of A-A.
Fig. 3 is the schematic diagram of the utility model MR imaging apparatus.
Fig. 4 is the schematic diagram of the utility model part.
Fig. 5 is the schematic diagram of another embodiment of the utility model MR imaging apparatus.
[embodiment]
See also Fig. 1 to shown in Figure 4, the utility model is a kind of MR imaging apparatus 200, it comprises MR imaging apparatus 100, described MR imaging apparatus 100 comprises superconducting magnet 20, be located at the gradient coil 40 in superconducting magnet 20 and be located at superconducting magnet 20 with gradient coil 40 between gradient coil 40 is fixed in superconducting magnet 20 interior airbag 30, the first damping layer 31, the second damping layer 32 and viscoelasticity beam 50.Described MR imaging apparatus 100 is provided with axis of symmetry 102, and it also is provided with columniform imaging area 101.
See also Figure 1 and Figure 2, superconducting magnet 20 has the first inside surface 22, and gradient coil 40 has and forms a gap 60 between the first outside surface 41, the first inside surfaces 22 of facing mutually with the first inside surface 22 and the first outside surface 41.Be provided with in this gap 60 5 with gas-filled tube, gradient coil 40 is fixed on airbag 30 in superconducting magnet 20.These 5 airbags 30 are symmetrical arranged centered by axis of symmetry 102, and are located at the top of gradient coil 40.Be provided with 3 symmetrically arranged viscoelasticity beam 50(50a centered by axis of symmetry 102,50b, 50c below gradient coil 40).Be provided with the first damping layer 31 between each airbag 30 and superconducting magnet 20, be provided with the second damping layer 32 between each airbag 30 and gradient coil 40, so reduce the movement of airbag 30 in gap 60.
The shell 21 that superconducting magnet 20 is equipped with refrigerating gas surrounds, and is provided with superconducting magnet cold head 70 on shell 21.In this embodiment, this refrigerating gas is helium.In other embodiments, this refrigerating gas also can be other refrigerating gases such as nitrogen.
See also shown in Figure 3ly, this MR imaging apparatus 100 also comprises gas compressor 71 and the first tracheae 11 and the second tracheae 12 that are connected with superconducting magnet cold head 70.The first tracheae 11 will be sent to from the refrigerating gas of shell 21 interior extractions in gas compressor 71, and the second tracheae 12 will be sent in shell 21 through the gas in gas compressor 71.By the circulation that gas compressor 71, superconducting magnet cold head 70, the first tracheae 11 and the second tracheae 12 consist of, make to be placed in shell 21, superconducting magnet 20 is carried out cooling gas can to keep needed chilling temperature always.
Please further consult shown in Figure 4ly, airbag 30 is provided with the gas-filled tube that the refrigerating gas from shell 21 interior extractions can be input in airbag 30.This gas-filled tube comprises the first gas-filled tube 10 and the second gas-filled tube 13, is provided with the making-up air device 72 that the first gas-filled tube 10 and the second gas-filled tube 13 are coupled together between this first gas-filled tube 10 and the second gas-filled tube 13.This making-up air device 72 comprises control circuit 721 and the gas-heating apparatus 722 that the refrigerating gas of coming from the second interior biography of gas-filled tube 13 is heated.Due in gas-filled tube or the gas temperature in gas compressor 71 usually lower, directly be filled with and cause in airbag 30 condensate water occurring and causing system problem on airbag 30 surfaces, by gas-heating apparatus 722 is set, the gas temperature of inserting in airbag is controlled at room temperature, so can avoids the system problem that causes because of condensate water.
The first gas-filled tube 10 is provided with the first valve 101 and measures the first pressure test device 102 of the air pressure in the first gas-filled tube 10.The second gas-filled tube 13 is provided with temperature measuring equipment 131, the second valve 132 of measuring the gas temperature in the second gas-filled tube 13 and measures the second pressure test device 133 of the air pressure in the second gas-filled tube 13.Because the first gas-filled tube 10 is connected with airbag 30, so the air pressure that the first pressure test device 102 measures can be regarded as the air pressure in airbag 30.When the air pressure in airbag 30 was reduced to certain value, the first valve 101 controlled by control circuit 721 and the second valve 132 is opened.When the air pressure that detects when the first pressure test device 101 reached certain value, the first valves 101 controlled by control circuit 721 and the second valve 132 is closed.So can carry out automatic inflating device to airbag 30, reduce the workload of service worker.In the present embodiment, the first pressure test device 102 and the first valve 101, the second pressure test device 132 and the second valve 133 are all the integral type structure.In other embodiments, the first pressure test device 102 and the first valve 101, the second pressure test device 132 and the second valve 133 also can be made as split type structure.
Please further consult shown in Figure 3ly, the second gas-filled tube 13 is connected with gas compressor 71.By the refrigerating gas in gas compressor 71, airbag 30 is carried out air feed, can reduce by an air pump that airbag 30 is carried out air feed.Generally, the air pressure in gas compressor 71 is more than or equal to 20bar, and the air pressure in airbag 30 are generally between 0.5-2bar, because between the two air pressure difference is larger, so when airbag 30 was inflated, aeration speed can be than comparatively fast.
See also shown in Figure 5ly, it is the second embodiment of the present utility model, this MR imaging apparatus 200 ' in the second gas-filled tube 13 ' with the second tracheae 12 ' be connected.Refrigerating gas by the second tracheae 12 ' interior is to airbag 30 ' carry out air feed, can reduce one to airbag 30 ' the carry out air pump of air feed.Generally, the air pressure of the second tracheae 12 ' interior is more than or equal to 20bar, and airbag 30 ' interior air pressure is generally between 0.5-2bar, because between the two air pressure difference is larger, so to airbag 30 ' when inflating, aeration speed can be than comparatively fast.In other embodiments, the second gas-filled tube 13 ' also can with the first tracheae 11 ' be connected.
The above is only a kind of embodiment of the present utility model, it not whole or unique embodiment, the variation of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model instructions is claim of the present utility model and contains.
Claims (10)
1. MR imaging apparatus, it comprise superconducting magnet, gradient coil, the described superconducting magnet of encirclement shell, gas compressor, be arranged on superconducting magnet cold head on described shell, be communicated with the first tracheae and second tracheae of described superconducting magnet cold head and gas compressor, described superconducting magnet has the first inside surface, described gradient coil has the first outside surface of facing mutually with the first inside surface, form a gap between described the first inside surface and the first outside surface, be provided with at least one with gas-filled tube in described gap, be located at the airbag between described gradient coil and superconducting magnet, it is characterized in that: described MR imaging apparatus also comprises and is arranged on the first valve on described gas-filled tube, can measure the first pressure test device of described airbag internal gas pressure and the control circuit that can control the first valve opening or close according to measured airbag internal gas pressure.
2. MR imaging apparatus as claimed in claim 1, is characterized in that: also be provided with gas-heating apparatus on described gas-filled tube.
3. MR imaging apparatus as claimed in claim 2, it is characterized in that: described gas-heating apparatus and described control circuit are the integral type setting.
4. MR imaging apparatus as claimed in claim 3, it is characterized in that: described gas-filled tube comprises the first gas-filled tube of being located at described gas-heating apparatus and described control circuit one side and is located at described gas-heating apparatus and the second gas-filled tube of described control circuit opposite side, and described the first valve is located on the first gas-filled tube.
5. MR imaging apparatus as claimed in claim 4, it is characterized in that: described the second gas-filled tube is connected with described the first tracheae, the second tracheae or gas compressor.
6. MR imaging apparatus as claimed in claim 4, it is characterized in that: described the second tracheae is provided with the second valve and the second pressure test device, and described the second valve and the second pressure test device are the integral type setting.
7. MR imaging apparatus as claimed in claim 1 is characterized in that: described airbag is provided with the first damping layer of the side of being located thereon and is positioned at the second damping layer of its below.
8. MR imaging apparatus as claimed in claim 7, is characterized in that: also be provided with the viscoelasticity beam relative with described airbag in described gap.
9. MR imaging apparatus as claimed in claim 1, it is characterized in that: described the first valve and described the first pressure test device are the integral type setting.
10. MR imaging apparatus as claimed in claim 1, it is characterized in that: described the first pressure test device is electronic installation or mechanical hook-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220685943 CN202975305U (en) | 2012-12-13 | 2012-12-13 | Magnetic resonance imaging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220685943 CN202975305U (en) | 2012-12-13 | 2012-12-13 | Magnetic resonance imaging equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202975305U true CN202975305U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220685943 Expired - Lifetime CN202975305U (en) | 2012-12-13 | 2012-12-13 | Magnetic resonance imaging equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202975305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082695A (en) * | 2019-05-22 | 2019-08-02 | 上海联影医疗科技有限公司 | Superconducting magnet and magnetic resonance imaging system with the superconducting magnet |
-
2012
- 2012-12-13 CN CN 201220685943 patent/CN202975305U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082695A (en) * | 2019-05-22 | 2019-08-02 | 上海联影医疗科技有限公司 | Superconducting magnet and magnetic resonance imaging system with the superconducting magnet |
| CN110082695B (en) * | 2019-05-22 | 2021-10-22 | 上海联影医疗科技股份有限公司 | Superconducting magnet and magnetic resonance imaging system with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170407 Address after: 518067 room C, building 202-207, No.1 building, No. six Nanshan District Road, Shenzhen, Guangdong, China Patentee after: SHENZHEN UNITED IMAGING HEALTHCARE Co.,Ltd. Address before: 201815 Shanghai City, Jiading District Jiading Industrial Zone No. 1180 Building 8 Hing Road Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |