CN111603165B - Positioning device for nuclear magnetic resonance imaging and using method - Google Patents
Positioning device for nuclear magnetic resonance imaging and using method Download PDFInfo
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- CN111603165B CN111603165B CN202010323572.9A CN202010323572A CN111603165B CN 111603165 B CN111603165 B CN 111603165B CN 202010323572 A CN202010323572 A CN 202010323572A CN 111603165 B CN111603165 B CN 111603165B
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Abstract
The invention provides a positioning device for nuclear magnetic resonance imaging and a using method thereof, wherein the positioning device comprises a wearable conical shell, the conical shell is formed by crossing a warp rod and a weft ring, a first developing capsule is arranged at the crossing point of the warp rod and the weft ring, first hollow pipelines which are mutually communicated are arranged in the warp rod and the weft ring, an air extraction opening which is communicated with the first hollow pipelines is arranged at the upper end of the conical shell, the air extraction opening is connected with a vacuum hose, first air outlet holes which are communicated with the first hollow pipelines are uniformly distributed on the inner wall of the weft ring along the circumferential direction, and a detachable expansion shell is arranged at the opening end of the conical shell. According to the invention, the hollow pipeline, the air outlet hole and the air extraction hole are matched, so that the weft ring is adsorbed on the surface of the breast, and the shape of the breast can be fixed no matter whether the nuclear magnetic resonance imaging is prone or supine, thereby avoiding influencing the tumor positioning accuracy due to the mobility of soft tissues of the breast.
Description
Technical Field
The invention relates to the technical field of medical devices, in particular to a positioning device for nuclear magnetic resonance imaging and a using method thereof.
Background
Breast tumors are one of the important diseases affecting the health of females, and are well developed in the upper outer quadrant of the breast, and are seen as single-shot tumors of the single side breast. Can be accompanied with symptoms such as pain, nipple change, nipple discharge, and mammary gland appearance change. In addition to the routine examination of molybdenum target of mammary gland, ultrasonic of mammary gland, etc., the biopsy method is its diagnostic gold standard. Surgical treatment and radio frequency ablation radiotherapy play an important role in the diagnosis, staging and combination treatment of breast cancer. However, the mammary gland is composed of skin, fibrous tissues, mammary gland and fat, has considerable mobility and mobility, and the receptor position affects the appearance and the activity change greatly when lying on the back and lying on the prone position, so that great operation difficulty is brought to accurate positioning of mammary tumors for pathological puncture biopsy, radio frequency ablation treatment and the like, the position uncertainty of the positioned tumors is also caused by the deformability of the mammary glands, the judgment of a soft tissue lesion area is inaccurate, a certain complication is brought, and the operation risk is increased.
The nuclear magnetic resonance imaging technology has high soft tissue resolution and accuracy, and can provide real-time, noninvasive and in-vivo tissue information. During clinical work, medical workers can monitor tumor areas in real time through images provided by magnetic resonance, determine breast tumor positioning, accurately implement relevant diagnosis and treatment operation by combining imaging data, and prolong survival time of patients. At present, in the clinical work, positioning treatment of breast tumors and auxiliary monitoring of nuclear magnetic resonance imaging, a patient is ordered more to take prone position to enable bilateral breasts to naturally droop, or a clamping device is adopted to extrude and fix the breasts, but the operation space of a doctor is limited, discomfort is easily brought to the patient when the breast is extruded and fixed for a long time, and compliance is reduced.
CN109770902a discloses an automatic tumor positioning system facing to the nuclear magnetic resonance environment, which comprises a soft tissue clamping device, wherein the breast and the like are placed in the soft tissue clamping device through prone position of a patient, and the structure has the following defects: 1. the patient is prone to lie down, and the operation space reserved for doctors is limited; 2. how the soft tissue clamping device is customized specifically according to the mammary glands of patients, and has poor universality; 3. only plays a supporting role on the mammary gland, is not connected with the skin of the mammary gland, and the mammary gland is easy to generate larger local deformation due to treatment operation, thereby affecting the positioning accuracy.
CN109499015a discloses a mammary gland locating part and mammary gland positioner, and locating part corresponds the top of patient's breast, through air pump and takeover and connecting pipe gas-supply to locating part, inhales patient's breast, and tumor locating device through different positions is located patient's breast top and tumor of bottom, and this structure has following problem: in the positioning part of the breast covered completely, the doctor is inconvenient to check the state of the breast, and the position of the breast positioning device is fixed, so that the doctor is inconvenient to adjust according to the needs.
CN109363769a discloses a magnetic resonance positioning device and a positioning method, wherein the positioning layer is a rectangular array, the number of rows and the number of columns of the rectangular array are the same, each positioning point is fixed with a group of developer, and the positioning points are more easily identified by the dequeue setting of the developer. The fixation of the shape of the breast is inconvenient due to the softness and mobility of the breast.
Disclosure of Invention
The invention provides a positioning device for nuclear magnetic resonance imaging and a use method thereof, wherein a weft coil is adsorbed on the surface of a breast through the matching of a hollow pipeline, an air outlet and an air extraction opening, and the shape of the breast can be fixed no matter whether the nuclear magnetic resonance imaging is prone or supine, so that the tumor positioning accuracy is prevented from being influenced by the mobility of soft tissues of the breast.
The technical scheme of the invention is realized as follows: the utility model provides a positioner for nuclear magnetic resonance imaging, including wearable toper casing, toper casing comprises warp pole and weft circle alternately, the crossing point department of warp pole and weft circle is provided with first development capsule, be provided with the first cavity pipeline that link up each other in warp pole and the weft circle, the upper end of toper casing is provided with the communicating extraction opening of first cavity pipeline, the extraction opening links to each other with vacuum hose, the circumference equipartition has the communicating first venthole of first cavity pipeline on the inner wall of weft circle, the open end of toper casing is provided with detachable extension casing.
Further, the extension casing includes the extension coil, be provided with the extension line pole with warp pole one-to-one on the extension coil, the extension line pole is provided with the second development capsule with the junction of extension coil, be provided with the second cavity pipeline that link up each other in extension coil and the extension line pole, be provided with the communicating second venthole of second cavity pipeline along circumference equipartition on the inner wall of extension coil, the one end that the extension line pole is close to the weft coil is provided with quick-plug-in components, be provided with the communicating transition pipeline of second cavity pipeline in the quick-in components, be provided with on the adjacent weft of extension line pole with quick-plug-in components complex first jack, first jack department is provided with first seal ring, first jack department is provided with openable first seal assembly.
Further, the first seal assembly comprises a seal cover, a rotating shaft and a screw rod, wherein the rotating shaft is arranged on the outer side of the first jack, one end of the seal cover is a free end, the other end of the seal cover is rotationally connected with the rotating shaft, a torsion spring is sleeved on the rotating shaft, the screw rod is arranged on one side of the seal cover and is connected with the screw thread of the weft ring, and the opening and closing of the seal cover are controlled by rotating the screw rod.
Further, the quick plug-in component comprises a connecting box communicated with the second hollow pipeline, an inserting rod is arranged at one end, close to the weft coil, of the connecting box, a transition pipeline communicated with the connecting box is arranged in the inserting rod in a penetrating mode along the axial direction, a clamping groove matched with the sealing cover is formed in one end, close to the connecting box, of the inserting rod, and a second sealing rubber ring is arranged at one end, far away from the connecting box, of the clamping groove.
Further, first one-way valves corresponding to the first air outlet holes one by one are arranged in the first hollow pipeline, and second one-way valves corresponding to the second air outlet holes one by one are arranged in the second hollow pipeline.
Further, one end of the expansion coil, which is far away from the expansion wire rod, is provided with a second jack corresponding to the quick plug-in unit one by one, and a second sealing component which can be opened is arranged at the second jack.
Further, the inner walls of the weft coil and the extension coil are respectively provided with a sealing rubber layer, the inner sides of the sealing rubber layers are respectively provided with an inner liner layer, and the sealing rubber layers and the inner liners are respectively provided with through holes corresponding to the first air outlet holes or the second air outlet holes one by one.
A method of using a positioning device for magnetic resonance imaging, comprising the steps of:
(1) The open end of the conical shell is sequentially connected with n expansion shells along the axis, wherein n is an integer and is more than or equal to 0;
(2) Wearing a conical shell at a position to be detected, connecting a vacuum hose with a vacuumizing device, vacuumizing a first hollow pipeline and a second hollow pipeline, adsorbing weft coils and expansion coils at the position to be detected through air outlet holes, and fixing the position to be detected;
(3) And performing nuclear magnetic resonance imaging at the position to be detected, and performing target positioning through developing the capsule.
Further, when n=0, the sealing cover is located at the first jack, the screw is located at one side of the sealing cover, the sealing cover is limited to rotate due to the torsion spring, and the sealing cover extrudes the first sealing rubber ring to achieve sealing of the first jack.
Further, when n=1, the screw rod on the weft coil is rotated outwards, the sealing cover is rotated outwards under the action of the torsion spring, the first jack is opened, the inserted link of the expansion shell is inserted into the first jack, the first sealing rubber ring is matched with the second sealing rubber ring, sealing of the joint of the inserted link and the first jack is achieved, then the screw rod is rotated inwards, the screw rod pushes the sealing cover to rotate towards the first jack, the edge of the sealing cover is clamped into the clamping groove, the inserted link is prevented from falling off from the first jack, connection between the expansion shell and the conical shell is completed, and sealing of the first hollow pipeline and the second hollow pipeline is communicated.
Further, when n is an integer and is more than or equal to 2, the adjacent expansion shells are connected with the corresponding quick plug-in units through the second jacks.
The invention has the beneficial effects that:
1. according to the invention, through the matching of the hollow pipeline, the air outlet and the air extraction opening, the weft ring is adsorbed on the surface of the breast, the shape of the breast can be fixed no matter the nuclear magnetic resonance imaging is prone or supine, a large operation space is provided for the subsequent treatment of doctors, and the influence on the tumor positioning accuracy due to the mobility of soft tissues of the breast is avoided;
2. the detachable expansion shell is arranged, so that the expansion shell is convenient for adapting to breasts of different sizes, the expansion shell is internally provided with the second hollow pipelines penetrating through each other, and the expansion shell, the conical shell and the adjacent conical shells are rapidly connected in a sealing way through the cooperation of the jack, the quick plug-in unit, the sealing assembly and the like, so that the simultaneous vacuumizing treatment of the first hollow pipeline and the second hollow pipeline is realized; when the conical shell does not need to be expanded, the first sealing component can ensure the tightness of the first hollow pipeline;
3. according to the invention, the inner sides of the weft coil and the expansion coil are provided with the sealing rubber layer and the inner liner, and the inner liner is attached to the skin at the mammary gland, so that the skin comfort is improved; because the breast has a certain radian and is non-planar, the arrangement of the lining layer is beneficial to adapting to breasts with different shapes and improving the adsorption stability; in addition, through setting up first check valve and second check valve, adopt sponge vacuum chuck's principle, even have certain venthole not adsorbed because of the mammary gland shape, also do not influence other ventholes, further mentioned absorptive stability.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the outside construction of a conical housing;
FIG. 2 is a schematic view of the inside construction of a conical housing;
FIG. 3 is a cross-sectional view of the C-C of FIG. 2 in a first embodiment;
FIG. 4 is a schematic view of the outside construction of the expansion shell;
FIG. 5 is an enlarged view of a portion of FIG. 4A;
FIG. 6 is a schematic view of the construction of the weft loops at the open end of the cone housing;
FIG. 7 is an enlarged view of a portion of B in FIG. 6;
FIG. 8 is a schematic view of the structure when the first jack is opened;
FIG. 9 is a cross-sectional view of the C-C of FIG. 2 in a third embodiment;
fig. 10 is a schematic structural view of the first check valve.
Warp beam 1, weft ring 2, first developing capsule 3, first hollow tube 4, extraction opening 5, vacuum hose 6, first venthole 7, sealing rubber layer 8, inner liner 9, through hole 10, expanding coil 11, expanding wire rod 12, second developing capsule 13, second hollow tube 14, reinforcing ring 15, connecting box 16, inserting rod 17, transition tube 18, clamping groove 19, second sealing rubber ring 20, first jack 21, first sealing rubber ring 22, sealing cover 23, rotating shaft 24, screw 25, valve body 26, valve ball 27, spring 28, valve 29, supporting hole 30, reducing hole 31, movable cavity 32, air hole 33.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1-3, a positioning device for magnetic resonance imaging comprises a wearable conical shell, wherein the conical shell is formed by intersecting a plurality of warp rods 1 and a plurality of weft coils 2, one ends of the warp rods 1 intersect at the tip of the conical shell, the other ends of the warp rods 1 are inclined downwards in an arc shape, and the diameters of the weft coils 2 of the coaxial lines are gradually increased from top to bottom and are connected with the warp rods 1 in a crossing manner. The materials adopted by the invention are nuclear magnetic resonance compatible materials.
The intersection of warp beam 1 and weft circle 2 sets up the mounting groove, and the mounting groove internal fixation has first development capsule 3, and the cross section of the corresponding first development capsule 3 of different weft circles 2 is different, and quick location when being convenient for tumor imaging can be the same with the cross section of the first development capsule 3 of the crossing department of remaining warp beam 1 on the same weft circle 2, also can be different, but all is different with this warp beam 1. The warp rod 1 and the weft coil 2 are internally provided with first hollow pipelines 4 which are mutually communicated, the upper end of the conical shell is provided with an extraction opening 5 communicated with the first hollow pipelines 4, the extraction opening 5 is connected with a vacuum hose 6, the inner wall of the weft coil 2 is circumferentially and uniformly provided with first air outlet holes 7 communicated with the first hollow pipelines 4, the inner wall of the weft coil 2 is fixedly adhered with a sealing rubber layer 8, the inner side of the sealing rubber layer 8 is fixedly adhered with an inner liner 9, the inner liner 9 can be made of nonmagnetic spongy materials, and through holes 10 which are in one-to-one correspondence with the first air outlet holes 7 are respectively arranged on the sealing rubber layer 8 and the inner liner 9.
The application method of the embodiment comprises the following steps: fixing straps can be arranged on two sides of the opening end of the conical shell, when the device is used, the conical shell is worn at the position to be detected, namely, the breast, the inner liner 9 is attached to the skin at the breast, so that the skin comfort is improved, and the inner liner 9 is arranged to be favorable for adapting to breasts of different shapes. The conical shell is fixed on a human body through the fixing belt, the vacuum hose 6 is connected with the vacuumizing device, the first hollow pipeline 4 is vacuumized, the weft coil 2 is adsorbed to the mammary gland through the first air outlet 7, the mammary gland is fixed, and the mammary gland is ensured not to be deformed no matter the patient is prone or supine during nuclear magnetic resonance imaging; nuclear magnetic resonance imaging is carried out at the position to be detected, and the tumor is positioned by developing the capsule.
Example two
This embodiment is substantially the same as the first embodiment except that: as shown in fig. 4-8, the opening end of the conical shell is provided with a detachable extension shell, the extension shell comprises extension coils 11, extension wire rods 12 corresponding to the warp wire rods 1 one by one are fixed on the extension coils 11, and a reinforcing ring 15 is fixed on the outer side of one end, far away from the extension coils 11, of the extension wire rods 12 and used for fixing the extension wire rods, so that the subsequent insertion connection with weft coils is facilitated. The second developing capsule 13 is fixed at the joint of the extension wire rod 12 and the extension coil 11, second hollow pipelines 14 communicated with each other are arranged in the extension coil 11 and the extension wire rod 12, second air outlet holes communicated with the second hollow pipelines 14 are uniformly distributed on the inner wall of the extension coil 11 along the circumferential direction, the inner wall of the extension coil 11 is also fixedly bonded with the sealing rubber layer 8, the inner side of the sealing rubber layer 8 is fixedly bonded with the inner liner 9, and through holes 10 corresponding to the second air outlet holes one by one are also formed in the sealing rubber layer 8 and the inner liner 9.
The extension line pole 12 is close to the one end of latitude coil 2 and is fixed with quick-connect plug-in components, and quick-connect plug-in components include the connecting box 16 that communicates with each other with second cavity pipeline 14, and the one end that connecting box 16 is close to latitude coil 2 is fixed with inserted bar 17, link up along the axial in the inserted bar 17 and be equipped with the communicating transition pipeline 18 of connecting box 16, and the one end that inserted bar 17 is close to connecting box 16 is equipped with the draw-in groove 19 with sealed lid 23 complex, and the one end that draw-in groove 19 kept away from connecting box 16 is fixed with second seal rubber ring 20.
The adjacent weft coils 2 of the extension wire rod 12 are provided with first insertion holes 21 matched with the quick plug-in, first sealing rubber rings 22 are fixed at the first insertion holes 21, and openable first sealing assemblies are arranged at the first insertion holes 21. The first sealing component comprises a sealing cover 23, a rotating shaft 24 and a screw rod 25, wherein the rotating shaft 24 is fixed on the outer side of the first jack 21, one end of the sealing cover 23 is a free end, the other end of the sealing cover is rotatably connected with the rotating shaft 24, a torsion spring is sleeved on the rotating shaft 24, the screw rod 25 is arranged on one side of the sealing cover 23 and is in threaded connection with the weft coil 2, and the opening and closing of the sealing cover 23 are controlled by rotating the screw rod 25.
One end of the extension coil 11, which is far away from the extension wire pole 12, is provided with a second jack corresponding to the quick connector one by one, and a second openable sealing component is arranged at the second jack, and the structure of the second sealing component is the same as that of the first sealing component.
The application method of the embodiment comprises the following steps: according to the size difference of breast, be connected gradually n extension shells along the axis at the open end of toper casing, n is the integer, and is equal to or more than 0:
when n=0, the conical shell is directly adopted, the sealing cover 23 is positioned at the first jack 21, the screw 25 is positioned at one side of the sealing cover 23, the rotation of the sealing cover 23 is limited, and the sealing cover 23 extrudes the first sealing rubber ring 22 to realize the sealing of the first jack 21;
when n=1, the screw 25 on the weft coil 2 is rotated outwards, the sealing cover 23 is rotated outwards under the action of the torsion spring, the first jack 21 is opened, the inserting rod 17 of the expansion shell is inserted into the first jack 21, the first sealing rubber ring 22 and the second sealing rubber ring 20 are extruded, sealing of the joint of the inserting rod 17 and the first jack 21 is achieved, then the screw 25 is rotated inwards, the screw 25 pushes the sealing cover 23 to rotate towards the first jack 21, the edge of the sealing cover is clamped into the clamping groove 19, the inserting rod 17 is prevented from falling off from the first jack 21, connection of the expansion shell and the conical shell is completed, and sealing communication of the first hollow pipeline 4 and the second hollow pipeline 14 is achieved.
When n is more than or equal to 2, the adjacent expansion shells are connected with the second sealing assembly through the second jack, and the connection mode is the same as that of the first jack 21 and the first sealing assembly.
Example III
This embodiment is substantially the same as one or two embodiments except that: as shown in fig. 9 and 10, a first one-way valve corresponding to the first air outlet holes 7 one by one is arranged in the first hollow pipeline 4, the first one-way valve comprises a valve body 26, a valve ball 27 and a spring 28, a valve 29 is arranged, a supporting hole 30, a reducing hole 31, a movable cavity 32 and the valve 29 are sequentially arranged in the valve body 26 along the axial direction, the valve 29 is arranged at the first air outlet holes 7 and communicated with the through hole 10, the supporting hole 30 is arranged in the first hollow shell, a plurality of air holes 33 are arranged on the side wall of the supporting hole 30, the communication between the valve 29 and the first hollow shell is realized through the air holes 33, the valve ball 27 is arranged in the movable cavity 32, one end of the spring 28 is abutted against the valve ball 27, the other end of the spring is arranged in the supporting hole 30, the inner diameters of the supporting hole 30 and the valve 29 are smaller than the diameter of the valve ball 27, and the inner diameter of the movable cavity 32 is larger than the diameter of the valve ball 27. Second one-way valves corresponding to the second air outlet holes one by one are arranged in the second hollow pipeline 14, and the first one-way valves and the second one-way valves have the same structure.
The application method of the embodiment comprises the following steps: because the shape and the size of the mammary gland are different, and the mammary gland is formed by soft tissues, the check valve of the embodiment is matched with the first air outlet holes 7, the principle of the sponge vacuum chuck is adopted, the adsorption strength can be ensured for soft tissues such as the mammary gland, even if a certain first air outlet hole 7 cannot be adsorbed on the skin of the mammary gland, the vacuum adsorption of other first air outlet holes 7 is not influenced, so that the mammary gland is fixed, and tumor imaging and positioning are facilitated.
Example IV
A method of using a positioning device for magnetic resonance imaging, comprising the steps of:
(1) The open end of the conical shell is sequentially connected with n extension shells along the axis, n is an integer and is more than or equal to 0:
when n=0, the conical shell is directly adopted, the sealing cover 23 is positioned at the first jack 21, the screw 25 is positioned at one side of the sealing cover 23, the rotation of the sealing cover 23 is limited, and the sealing cover 23 extrudes the first sealing rubber ring 22 to realize the sealing of the first jack 21;
when n=1, the screw 25 on the weft coil 2 is rotated outwards, the sealing cover 23 is rotated outwards under the action of the torsion spring, the first jack 21 is opened, the inserted link 17 of the expansion shell is inserted into the first jack 21, the first sealing rubber ring 22 is matched with the second sealing rubber ring 20, sealing of the joint of the inserted link 17 and the first jack 21 is achieved, then the screw 25 is rotated inwards, the screw 25 pushes the sealing cover 23 to rotate towards the first jack 21, the edge is clamped into the clamping groove 19, the inserted link 17 is prevented from falling off from the first jack 21, and the connection of the expansion shell and the conical shell and the sealing communication of the first hollow pipeline 4 and the second hollow pipeline 14 are completed;
when n is an integer and is more than or equal to 2, the adjacent expansion shells are connected with the corresponding quick plug-in units through the second jacks;
(2) Wearing a conical shell at a breast to be detected, connecting a vacuum hose 6 with a vacuumizing device, vacuumizing a first hollow pipeline 4 and a second hollow pipeline 14, adsorbing a weft coil 2 and an expansion coil 11 at the position to be detected through a first air outlet hole 7, and fixing the position to be detected;
(3) Nuclear magnetic resonance imaging is carried out at the position to be detected, and tumor localization is carried out by developing the capsule.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. The utility model provides a positioner for nuclear magnetic resonance imaging, includes wearable toper casing, and toper casing comprises warp pole (1) and weft circle (2) alternately, its characterized in that: the warp rod (1) and the weft ring (2) are provided with first developing capsules (3), first hollow pipelines (4) which are mutually communicated are arranged in the warp rod (1) and the weft ring (2), the upper end of the conical shell is provided with an extraction opening (5) which is communicated with the first hollow pipelines (4), the extraction opening (5) is connected with a vacuum hose (6), first air outlet holes (7) which are communicated with the first hollow pipelines (4) are uniformly distributed on the inner wall of the weft ring (2) along the circumferential direction, and the opening end of the conical shell is provided with a detachable expansion shell;
the extension shell comprises extension coils (11), extension wire rods (12) which are in one-to-one correspondence with the warp wire rods (1) are arranged on the extension coils (11), second developing capsules (13) are arranged at the junctions of the extension wire rods (12) and the extension coils (11), second hollow pipelines (14) which are mutually communicated are arranged in the extension coils (11) and the extension wire rods (12), second air outlet holes which are communicated with the second hollow pipelines (14) are uniformly distributed on the inner wall of the extension coils (11) along the circumferential direction, quick plug-ins are arranged at one ends, close to the weft wire rods (2), of the extension wire rods (12), transition pipelines (18) which are communicated with the second hollow pipelines (14) are arranged in the quick plug-ins, first plug-ins (21) which are matched with the quick plug-ins are arranged on the weft wire rods (2) adjacent to the extension wire rods (12), first sealing rubber rings (22) are arranged at the first plug-ins (21), and openable first sealing assemblies are arranged at the first plug-ins.
2. A positioning device for magnetic resonance imaging according to claim 1, wherein: the first sealing component comprises a sealing cover (23), a rotating shaft (24) and a screw rod (25), wherein the rotating shaft (24) is arranged on the outer side of the first jack (21), one end of the sealing cover (23) is a free end, the other end of the sealing cover is rotationally connected with the rotating shaft (24), a torsion spring is sleeved on the rotating shaft (24), the screw rod (25) is arranged on one side of the sealing cover (23) and is in threaded connection with the weft coil (2), and the opening and closing of the sealing cover (23) are controlled through the rotating screw rod (25).
3. A positioning device for magnetic resonance imaging according to claim 1 or 2, characterized in that: the quick plug-in component comprises a connecting box (16) communicated with the second hollow pipeline (14), a plug-in rod (17) is arranged at one end, close to the weft coil (2), of the connecting box (16), a transition pipeline (18) communicated with the connecting box (16) is arranged in the plug-in rod (17) in a penetrating way along the axial direction, a clamping groove (19) matched with a sealing cover (23) is formed in one end, close to the connecting box (16), of the plug-in rod (17), and a second sealing rubber ring (20) is arranged at one end, far away from the connecting box (16), of the clamping groove (19).
4. A positioning device for magnetic resonance imaging according to claim 1, wherein: first one-way valves corresponding to the first air outlet holes (7) one by one are arranged in the first hollow pipeline (4), and second one-way valves corresponding to the second air outlet holes one by one are arranged in the second hollow pipeline (14).
5. A positioning device for magnetic resonance imaging according to claim 1, wherein: one end of the expansion coil (11) far away from the expansion wire rod (12) is provided with a second jack corresponding to the quick plug-in unit one by one, and the second jack is provided with a second openable sealing component.
6. A positioning device for magnetic resonance imaging according to claim 1, wherein: the inner walls of the weft coil (2) and the extension coil (11) are respectively provided with a sealing rubber layer (8), the inner side of the sealing rubber layer (8) is provided with an inner liner (9), and through holes (10) corresponding to the first air outlet holes (7) or the second air outlet holes one by one are respectively arranged on the sealing rubber layer (8) and the inner liner (9).
7. A method of using a positioning device for magnetic resonance imaging according to one of claims 1-6, comprising the steps of:
(1) The open end of the conical shell is sequentially connected with n expansion shells along the axis, wherein n is an integer and is more than or equal to 0;
(2) Wearing a conical shell at a position to be detected, connecting a vacuum hose (6) with a vacuumizing device, vacuumizing a first hollow pipeline (4) and a second hollow pipeline (14), and adsorbing a weft coil (2) and an expansion coil (11) at the position to be detected through air outlet holes;
(3) And performing nuclear magnetic resonance imaging at the position to be detected, and performing target positioning through developing the capsule.
8. The method of use according to claim 7, wherein: when n=1, screw rod (25) on weft coil (2) outwards rotates, sealed lid (23) outwards rotates under the effect of torsional spring, open first jack (21), insert extension casing's inserted bar (17) in first jack (21), first sealed rubber ring (22) and second sealed rubber ring (20) extrusion fit, realize the sealed of inserted bar (17) and first jack (21) junction, then inwards rotate screw rod (25), screw rod (25) promote sealed lid (23) and rotate to first jack (21) direction, and in the draw-in groove (19) are blocked to the edge, avoid inserted bar (17) to drop in from first jack (21), accomplish extension casing and conical casing's linking to each other, and the sealed communication of first hollow pipeline (4) and second hollow pipeline (14).
9. The method of use according to claim 7, wherein: when n=0, the sealing cover (23) is positioned at the first jack (21), the screw (25) is positioned at one side of the sealing cover (23), the sealing cover (23) is limited to rotate due to the torsion spring, and the sealing cover (23) extrudes the first sealing rubber ring (22) to realize the sealing of the first jack (21); when n is more than or equal to 2, the adjacent expansion shells are connected with the corresponding quick plug-in components through the second jacks.
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| CN202010323572.9A CN111603165B (en) | 2020-04-22 | 2020-04-22 | Positioning device for nuclear magnetic resonance imaging and using method |
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