A shoulder coil for magnetic resonance imaging

Abstract

The present invention discloses a shoulder coil for magnetic resonance imaging. The technical solution thereof mainly comprises a coil and a base, wherein the coil and the base are detachably connected, and the coil and a filling body arranged outside the coil are provided. An arc-shaped recessed portion is provided inside the coil, and the recessed portion is used for positioning the shoulder after entering the coil. The coil is also provided with a swinging device for swinging the coil; the swinging device comprises a main support and a swinging rod arranged at the upper end of the main support, the coil is fixed at the swinging rod, and an elastic mechanism is provided at the connection between the swinging rod and the main support, and the elastic mechanism causes the swinging rod to have an inward restoring force. The shoulder coil has an automatic inward restoring force, can be closely attached to the shoulder, and improves the clarity of the imaging effect.

Description

Technical Field

[0001] The present invention relates to a shoulder coil for magnetic resonance imaging. Background Art

[0002] Magnetic resonance imaging is an imaging technology that uses the nuclear magnetic resonance phenomenon that occurs when hydrogen nuclei (protons) in human tissue are stimulated by radio frequency pulses in a magnetic field. This produces magnetic resonance signals, which are then processed by electronic computers to reconstruct images of a certain level of the human body.

[0003] Magnetic resonance imaging equipment can examine many parts of the human body. Among them, the structure used to examine the human shoulder is called a shoulder coil.

[0004] However, in addition to the difference in shoulder width, different individuals also have different shoulder thicknesses. If the shoulder coil cannot be adjusted in the direction of shoulder thickness, the shoulder coil will not fit closely to the shoulder, affecting the MRI effect. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a shoulder coil for magnetic resonance imaging, which has an automatic inward restoring force, can fit closely to the shoulder, and improve the clarity of the imaging effect.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a shoulder coil for magnetic resonance imaging, comprising a coil and a base, wherein the coil and the base are detachably connected, comprising a coil and a filling body arranged outside the coil, wherein an arc-shaped recessed portion is arranged inside the coil, wherein the recessed portion is used for positioning the shoulder after entering the coil, and a swinging device for swinging the coil is also arranged on the coil;

[0007] The swing device includes a main bracket and a swing rod arranged at the upper end of the main bracket, the coil is fixed to the swing rod, and an elastic mechanism is arranged at the connection between the swing rod and the main bracket, and the elastic mechanism causes the swing rod to have an inward restoring force.

[0008] Furthermore, the filling body includes an airbag and an inflatable piece for inflating the interior of the airbag. The airbag is arranged outside the coil and abuts against the shoulder socket. The connection between the coil and the airbag is provided with memory foam for filling the gap. The inflatable piece is made of rubber material. The airbag is in contact with the inner wall of the coil. When the inflatable piece is squeezed, the airbag can be inflated to fill the empty space inside the coil.

[0009] Furthermore, a one-way valve is provided between the airbag and the inflatable member, and a pressure relief valve is provided on the inflatable member.

[0010] Furthermore, the elastic mechanism includes shift rods arranged on both sides of the main bracket, the swing rod is arranged between the shift rods, a hinge rod is arranged between the shift rod and the swing rod, a torsion spring is sleeved on the outside of the hinge rod, and the swing rod can swing along the circumferential direction of the hinge rod.

[0011] Furthermore, the coil is provided with an outwardly curved outer edge outside, and the curved outer edge is used to guide the coil to be sleeved on the outer side of the shoulder along the curved contour of the shoulder.

[0012] Furthermore, the main bracket includes an upper rod and a lower rod, both of which are hollow inside, the upper rod is sleeved inside the lower rod, the upper rod can slide back and forth along the length direction of the lower rod, and an unlocking piece is provided at the connection between the upper rod and the lower rod. When the unlocking piece is opened, the upper rod slides back and forth along the length direction of the lower rod.

[0013] Furthermore, the unlocking member includes a threaded rod and a knob fixedly connected to the threaded rod, the upper rod is provided with a plurality of circular holes for the threaded rod to pass through, the side wall of the lower rod is provided with a plurality of through holes corresponding to the circular holes, the lower rod is also provided with an anti-drop block for preventing the threaded rod from falling out, the anti-drop block is fixed to the inner wall of the lower rod, the threaded rod is also provided with a contact plate that abuts against the anti-drop block, the contact plate and the threaded rod are arranged in a "T"-shaped structure, the inner side surface of the upper rod is also provided with a contact block that abuts against the threaded rod, the contact block and the through hole are arranged corresponding to each other, and when the end face of the threaded rod abuts against the contact block, the threaded rod stops rotating.

[0014] Beneficial effects of the present invention:

[0015] 1. The shoulder can be inserted into the recessed portion, and the swinging device can be configured to provide an inward restoring force to the swinging rod.

[0016] 2. The setting of the airbag can fix the patient's position to prevent poor imaging effect caused by the patient moving his body during the imaging process. The setting of the memory foam can effectively fill the gap between the airbag and the coil.

[0017] 3. Through the setting of the upper rod and the lower rod, the coil can be effectively raised and lowered.

[0018] 4. By setting the unlocking piece, the lifting and fixing between the upper rod and the lower rod can be effectively controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram of the structural relationship between the coil and the human body;

[0020] Figure 2 It is a detailed structural diagram between the coil and the airbag;

[0021] Figure 3 is a detailed structural diagram of the swing device;

[0022] Figure 4 It is a schematic diagram of the structure between the upper rod and the lower rod.

[0023] Figure numerals: 1. Coil; 10. Base; 11. Filling body; 111. Airbag; 112. Memory foam; 12. Inflatable part; 13. One-way valve; 14. Pressure relief valve; 2. Swinging device; 21. Main bracket; 211. Upper rod; 212. Lower rod; 213. Unlocking part; 22. Swinging rod; 3. Elastic mechanism; 31. Gear lever; 32. Articulated rod; 33. Torsion spring; 4. Threaded rod; 41. Knob; 42. Circular hole; 43. Through hole; 44. Resistance block; 5. Anti-drop block; 6. Resistance plate. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] Reference Figures 1 to 4 As shown, a shoulder coil for magnetic resonance imaging of this embodiment comprises a coil 1 and a base 10, wherein the coil 1 and the base 10 are detachably connected, and comprises a coil 1 and a filling body 11 arranged outside the coil 1, wherein an arc-shaped recessed portion is arranged inside the coil 1, wherein the recessed portion is used for positioning the shoulder after entering the coil 1, and a swinging device 2 for swinging the coil 1 is also arranged on the coil 1;

[0026] The swing device 2 includes a main bracket 21 and a swing rod 22 arranged at the upper end of the main bracket 21, the coil 1 is fixed to the swing rod 22, and an elastic mechanism 3 is arranged at the connection between the swing rod 22 and the main bracket 21, and the elastic mechanism 3 causes the swing rod 22 to have an inward restoring force.

[0027] The above-mentioned improvement is specifically as follows: a filling body 11 is arranged on the outside of the coil 1. When the coil 1 is sleeved on the outer end of the shoulder and fixed, the airbag is inflated and contacts the patient's shoulder socket to fix the position of the coil. A recess is arranged inside the coil 1. The patient contacts the shoulder with the recess of the coil 1 to preliminarily determine the position of the coil 1. After the position of the coil 1 is fixed, the airbag 111 is expanded to fill the remaining part so that the shoulder will not be moved. The expansion of the airbag just contacts the socket of the shoulder socket. A swing device 2 is arranged on the coil 1. The function of the swing device 2 is to make the coil 1 have an inward restoring force. Before the test, after the patient lies on the nuclear magnetic resonance equipment, the patient's shoulder will cause the swing rod to rotate counterclockwise. Since the swing rod has an inward restoring force, it will make the coil always contact the shoulder. This is different from the prior art and can effectively fix the coil 1. When the patient moves his body, it will not affect the imaging effect.

[0028] Based on the above embodiment, the filling body 11 includes an airbag 111 and an inflatable piece 12 for inflating the airbag 111. The airbag 111 is arranged outside the coil 1 and contacts the shoulder socket. The connection part between the coil 1 and the airbag 111 is provided with a memory foam 112 for filling the gap. The inflatable piece 12 is made of rubber material. The airbag 111 is in contact with the inner wall of the coil 1. When the inflatable piece 12 is squeezed, the airbag 111 can be inflated to fill the empty space inside the coil 1.

[0029] The above improvements are specifically as follows: the inflatable member 12 is used to inflate the airbag 111, the airbag 111 swells to fill the remaining part in the coil 1, the airbag 111 contacts the shoulder socket part of the patient's shoulder to fix the patient's body position, the airbag 111 is made of soft material and will not damage the skin during contact with the skin, and the airbag 111 has a certain elastic force. After the airbag 111 is squeezed during the movement of the patient, the elastic force of the airbag 111 itself will bounce the shoulder back to its original position, but after the airbag 111 expands, there is a large gap between it and the coil 1, so a memory foam 112 is set at the intersection of the gap to fill the gap.

[0030] On the basis of the above embodiment, a one-way valve 13 is provided between the airbag 111 and the inflatable member 12 , and a pressure relief valve 14 is provided on the airbag 111 .

[0031] The above-mentioned improvements are specifically as follows: a one-way valve 13 is set at the connection between the inflatable piece 12 and the airbag 111, and a one-way valve 13 is also set at the bottom of the inflatable piece 12. The one-way valve 13 between the airbag 111 and the inflatable piece 12 faces from the inside of the inflatable piece 12 to the outside of the inflatable piece 12, and the valve mouth of the one-way valve 13 at the bottom of the inflatable piece 12 faces from the outside of the inflatable piece 12 to the inside of the inflatable piece 12. When the inflatable piece 12 is squeezed, the gas enters the airbag 111. When the doctor releases the squeezed inflatable piece 12, the one-way valve 13 at the bottom of the inflatable piece 12 replenishes the gas into the inflatable piece 12. After the detection is completed, the pressure relief valve 14 on the airbag 111 is opened to release the gas in the airbag 111. The airbag 111 becomes deflated, and the shoulder can be taken out of the coil 1.

[0032] Based on the above embodiment, the elastic mechanism 3 includes a shift rod 31 arranged on both sides of the main bracket 21, the swing rod 22 is arranged between the shift rod 31, and a hinge rod 32 is arranged between the shift rod 31 and the swing rod 22. A torsion spring 33 is sleeved on the outside of the hinge rod 32, and the swing rod 22 can swing along the circumferential direction of the hinge rod 32.

[0033] The above improvements are specifically as follows: the gear rod 31 is fixed on both sides of the main bracket 21, and the gear rod 31 on both sides is used to accommodate the swing rod 22. A hinge rod 32 is fixedly arranged outside the swing rod 22, and a round rod connected to the hinge rod 32 extends from the side wall of the gear rod 31, and the round rod and the hinge rod 32 are rotatably connected.

[0034] On the basis of the above embodiment, the coil 1 is provided with an outwardly raised arc-shaped outer edge on the outside, and the arc-shaped outer edge is used to guide the coil 1 to be sleeved on the outside of the shoulder along the arc-shaped contour of the shoulder.

[0035] The above improvement is specifically as follows: by setting the arc-shaped outer edge, the coil 1 can be closer to the shoulder.

[0036] Based on the above embodiment, the main bracket 21 includes an upper rod 211 and a lower rod 212. The upper rod 211 and the lower rod 212 are both hollow inside. The upper rod 211 is sleeved inside the lower rod 212. The upper rod 211 can slide back and forth along the length direction of the lower rod 212. An unlocking piece 213 is provided at the connection between the upper rod 211 and the lower rod 212. When the unlocking piece 213 is opened, the upper rod 211 slides back and forth along the length direction of the lower rod 212.

[0037] The above improvements are specifically as follows: the main bracket 21 includes an upper rod 211 and a lower rod 212, the upper rod 211 is sleeved in the lower rod 212, and when the unlocking piece 213 is opened, the upper rod 211 can be retracted inside the lower rod 212, so that the coil 1 can adapt to people of different heights.

[0038] On the basis of the above embodiment, the unlocking member 213 includes a threaded rod 4 and a knob 41 fixedly connected to the threaded rod 4, the upper rod 211 is provided with a plurality of circular holes 42 for the threaded rod 4 to pass through, the side wall of the lower rod 212 is provided with a plurality of through holes 43 corresponding to the circular holes 42, the lower rod 212 is also provided with an anti-drop block 5 for preventing the threaded rod 4 from falling out, the anti-drop block 5 is fixed to the inner side wall of the lower rod 212, the threaded rod 4 is also provided with a contact plate 6 against which the anti-drop block 5 abuts, the contact plate 6 and the threaded rod 4 are arranged in a "T"-shaped structure, the inner side of the upper rod 211 is also provided with a contact block 44 that abuts against the threaded rod 4, and the contact block 44 and the through hole 43 are mutually engaged

[0039] The above-mentioned improvements are specifically as follows: a threaded rod 4 is provided at the lower rod 212, and a resistance block 44 cooperating with the threaded rod 4 is provided on the inner side of the upper rod 211; a plurality of through holes 43 are provided on the upper rod 211, and the threaded rod 4 is inserted into the through holes 43; an anti-drop block 5 is also provided on the lower rod 212, and the anti-drop block 5 prevents the threaded rod 4 from falling out from the inside of the lower rod 212; a knob 41 is also provided on the outside of the threaded rod 4, and the threaded rod 4 can be easily rotated through the setting of the knob 41. When it is necessary to adjust the height between the upper rod 211 and the lower rod 212, it is only necessary to rotate the knob 41 to disengage the threaded rod 4 from the resistance block 44, and the upper rod 211 moves upward or downward in the lower rod 212. When it moves to a suitable position, the threaded rod 4 is twisted inward to make the threaded rod 4 conflict with the resistance block 44, thereby achieving fixation between the upper rod 211 and the lower rod 212.

[0040] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A shoulder coil for magnetic resonance imaging, comprising a coil (1) and a base (10), wherein the coil (1) and the base (10) are detachably connected, and characterized in that: A filling body (11) is provided outside the coil (1), an arc-shaped recessed portion is provided inside the coil (1), the recessed portion is used for positioning the shoulder after entering the coil (1), and a swinging device (2) for swinging the coil (1) is also provided on the coil (1); the swinging device (2) comprises a main support (21) and a swinging rod (22) provided at the upper end of the main support (21), the coil (1) is fixed to the swinging rod (22), and an elastic mechanism (3) is provided at the connection between the swinging rod (22) and the main support (21), and the elastic mechanism (3) causes the swinging rod (22) to have an inward restoring force; The main support (21) comprises an upper rod (211) and a lower rod (212); the upper rod (211) and the lower rod (212) are both hollow inside; the upper rod (211) is sleeved inside the lower rod (212); the upper rod (211) can slide back and forth along the length direction of the lower rod (212); an unlocking member (213) is provided at the connection between the upper rod (211) and the lower rod (212); when the unlocking member (213) is opened, the upper rod (211) slides back and forth along the length direction of the lower rod (212); The elastic mechanism (3) comprises a shift lever (31) arranged on both sides of the main bracket (21), the swing lever (22) being arranged between the shift lever (31), a hinged rod (32) being arranged between the shift lever (31) and the swing lever (22), a torsion spring (33) being sleeved on the outside of the hinged rod (32), and the swing lever (22) being capable of swinging along the circumferential direction of the hinged rod (32).

2. A shoulder coil for magnetic resonance imaging according to claim 1, characterized in that: The filling body (11) comprises an airbag (111) and an inflatable member (12) for inflating the airbag (111); the airbag (111) is arranged outside the coil (1) and contacts the shoulder socket; a memory foam (112) for filling the gap is arranged at the connection portion between the coil (1) and the airbag (111); the inflatable member (12) is made of rubber material; the airbag (111) is in contact with the inner wall of the coil (1); when the inflatable member (12) is squeezed, the airbag (111) can be inflated to fill the empty space inside the coil (1).

3. A shoulder coil for magnetic resonance imaging according to claim 2, characterized in that: A one-way valve (13) is provided between the airbag (111) and the inflatable member (12), and a pressure relief valve (14) is provided on the airbag (111).

4. The shoulder coil for magnetic resonance imaging according to claim 1, characterized in that: The unlocking member (213) comprises a threaded rod (4) and a knob (41) fixedly connected to the threaded rod (4); the upper rod (211) is provided with a plurality of circular holes (42) for the threaded rod (4) to pass through; the side wall of the lower rod (212) is provided with a plurality of through holes (43) corresponding to the circular holes (42); the lower rod (212) is also provided with an anti-drop block (5) for preventing the threaded rod (4) from falling out; the anti-drop block (5) is fixed to the lower rod (212) inner wall, the threaded rod (4) is also provided with a contact plate (6) that contacts the anti-drop block (5), the contact plate (6) and the threaded rod (4) are arranged in a "T"-shaped structure, the inner side surface of the upper rod (211) is also provided with a contact block (44) that contacts the threaded rod (4), the contact block (44) and the through hole (43) are arranged corresponding to each other, and when the end face of the threaded rod (4) contacts the contact block (44), the threaded rod (4) stops rotating.

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