Suspended vertical elbow joint magnetic resonance scanning support

Abstract

The suspended vertical elbow joint magnetic resonance scanning support comprises a fixing mechanism and a supporting mechanism, one end of the fixing mechanism is movably connected with the supporting mechanism, the other end of the fixing mechanism is inserted into a clamping groove of an examining table, the supporting mechanism comprises a wrist strap, an inner plate and an adjusting portion, and the wrist strap is arranged at the end, away from the fixing mechanism, of the adjusting portion. And the adjusting part sleeves the inner plate in a limiting and sliding manner. According to the suspended vertical elbow joint magnetic resonance scanning support, the total length of the adjusting part and the inner plate is shortened through limiting sliding, so that the forearm leaves the abdomen and is suspended and erected without being affected by abdominal breathing movement, movement artifacts caused by abdominal breathing to elbow joint scanning are eliminated, and the image quality and the examination success rate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic resonance examination auxiliary equipment, in particular to a suspended elbow joint magnetic resonance scanning bracket. Background Art

[0002] Magnetic resonance imaging is used to examine the elbow joint. It has been widely used because of its advantages such as being non-invasive, clear, able to display muscles, tendons, ligaments, cartilage and bone marrow, and having no ionizing radiation.

[0003] During a normal MRI examination of the elbow joint, the patient lies flat with the elbow straightened, and the coil is wrapped around the elbow for scanning. However, for some patients whose elbows are injured and cannot be straightened, the MRI scanning time is long, so they can only internally rotate the elbow and lean the forearm against the abdomen. When the patient breathes, the abdomen will move up and down, causing the forearm and elbow to vibrate constantly, and motion artifacts will appear on the image, resulting in a decrease in image quality or even examination failure. Utility Model Content

[0004] Based on this, it is necessary to provide a suspended elbow joint magnetic resonance scanning support that can eliminate motion artifacts caused by abdominal breathing in elbow joint scanning, thereby improving image quality and examination success rate.

[0005] A suspended elbow joint magnetic resonance scanning support comprises a fixing mechanism and a supporting mechanism, wherein one end of the fixing mechanism is movably connected to the supporting mechanism, and the other end of the fixing mechanism is inserted into a slot of an examination bed, and the supporting mechanism comprises a wrist strap, an inner plate and an adjusting part, wherein the wrist strap is arranged at one end of the adjusting part away from the fixing mechanism, and the adjusting part is limitedly slidably sleeved on the inner plate.

[0006] Furthermore, the inner plate is provided with a plurality of limiting holes, and the plurality of limiting holes are distributed at intervals along the vertical direction.

[0007] Furthermore, the adjustment part includes an outer shell and a limiting bolt. A positioning hole is provided at one end of the outer shell. The limiting bolt passes through the positioning hole and can be detachably installed in the limiting hole.

[0008] Furthermore, a mounting hole is provided at the other end of the outer shell, and the mounting hole passes through from one side of the outer shell to the other side along the width direction, and the wristband is installed in the mounting hole.

[0009] Furthermore, a penetration direction of the positioning hole is perpendicular to a penetration direction of the mounting hole.

[0010] Furthermore, the limiting bolt is a bolt, and the limiting hole is a threaded hole.

[0011] Furthermore, the fixing mechanism includes a pin and a buckle, the inner plate is hinged to the buckle via the pin, and the inner plate is rotatable relative to the pin.

[0012] Furthermore, it also includes a fixing plate, the top surface of which is provided with Velcro, and the bottom surface of which is provided with a clamping plate, and the clamping plate is used to be inserted into a clamping slot of the examination bed.

[0013] Furthermore, the clamping plates are symmetrically distributed at the four corners of the fixing plate.

[0014] Furthermore, notches are provided at both ends of the fixing plate, and the notches are relatively recessed inwards.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] The suspended elbow joint magnetic resonance scanning stand in the present application shortens the overall length of the adjustment part and the inner plate by limited sliding, so that the forearm is suspended away from the abdomen and is not affected by abdominal respiratory movement, thereby eliminating motion artifacts caused by abdominal breathing to the elbow joint scanning, and improving image quality and examination success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 It is a perspective view of the overall structure of the suspended elbow joint magnetic resonance scanning support in the embodiment;

[0019] Figure 2 A perspective view of the overall structure of a suspended elbow joint magnetic resonance scanning support in another embodiment;

[0020] Parts names and serial numbers in the figure: 1-fixing mechanism; 11-pin shaft; 12-buckle; 2-support mechanism; 21-wristband; 22-inner plate; 221-limiting hole; 23-adjusting part; 231-outer shell; 2311-positioning hole; 2312-mounting hole; 232-limiting bolt; 3-fixing plate; 31-velcro; 32-card plate; 33-notch;

[0021] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0025] refer to Figure 1 The present application provides a suspended elbow joint magnetic resonance scanning stand, including a fixing mechanism 1 and a supporting mechanism 2, wherein one end of the fixing mechanism 1 is movably connected to the supporting mechanism 2, and the other end of the fixing mechanism 1 is inserted into a card slot provided on the examination bed, and the supporting mechanism 2 includes a wristband 21, an inner plate 22 and an adjusting portion 23, wherein the wristband 21 is arranged at one end of the adjusting portion 23 away from the fixing mechanism 1, and is used to fix the front end of the forearm, and the adjusting portion 23 is limitedly slidably sleeved on the inner plate 22.

[0026] The suspended elbow joint magnetic resonance scanning stand in the present application shortens the overall length of the adjustment part 23 and the inner plate 22 by limited sliding, so that the forearm is suspended away from the abdomen and is not affected by the abdominal respiratory movement, thereby eliminating the motion artifacts caused by abdominal breathing to the elbow joint scanning, and improving the image quality and the examination success rate.

[0027] Specifically, the fixing mechanism 1 includes a pin 11 and a buckle 12, and the inner plate 22 is hinged to the buckle 12 through the pin 11, and the inner plate 22 can rotate relative to the pin 21. When the overall length of the adjustment portion 23 and the inner plate 22 is shortened, the wristband 21 drives the patient's forearm to rotate counterclockwise relative to the pin 11, so that the forearm is suspended away from the patient's abdomen and is not affected by the abdominal breathing movement.

[0028] Specifically, the inner plate 22 is provided with a plurality of limiting holes 221 , and the plurality of limiting holes 221 are spaced apart along the length direction.

[0029] In this embodiment, the adjustment part 23 includes an outer shell 231 and a stop bolt 232. A positioning hole 2311 is provided at one end of the outer shell 231. The stop bolt 232 penetrates the positioning hole 2311 and can be detachably installed in the stop hole 221. The stop bolt 232 is a bolt, and the stop hole 221 is a threaded hole. The outer shell 231 is fixedly connected to the inner plate 22 through a threaded connection. The outer shell 231 is slid to align the positioning hole 2311 with the stop hole 221, and then the bolt is sequentially passed through the positioning hole 2311 and the stop hole 221 for position fixing. The outer shell 231 is slid to fix the bolt in the stop hole 221 at different positions, so that the overall length of the outer shell 231 and the inner plate 22 can be adjusted.

[0030] In other embodiments, the limiting bolt 232 is a column bolt, the limiting hole 221 is a round hole, and the outer shell 231 is fixedly connected to the inner plate 22 through interference fit.

[0031] Specifically, the other end of the outer shell 231 is provided with a mounting hole 2312, which runs from one side of the outer shell 231 to the other side along the width direction, and the wristband 21 is detachably mounted on the mounting hole 2312. One end of the wristband 21 passes through the mounting hole 2312, and then circumferentially surrounds the front end of the patient's forearm near the wrist joint, and finally is tied to fix it.

[0032] In this embodiment, the through direction of the positioning hole 2311 is perpendicular to the through direction of the mounting hole 2312. At this time, the bolt passes through the outer shell 231 in the height direction and is installed in the threaded hole.

[0033] In other embodiments, the penetration direction of the positioning hole 2311 is parallel to the penetration direction of the installation hole 2312. In this case, the bolt passes through the outer shell 231 in the width direction and is installed in the threaded hole.

[0034] refer to Figure 2 In another embodiment, it further includes a fixing plate 3, a Velcro 31 is provided on the top surface of the fixing plate 3, and a clamping plate 32 is provided on the bottom surface of the fixing plate 3.

[0035] Specifically, the clamping plates 32 are symmetrically distributed at the four corners of the bottom surface of the fixing plate 3. The examination bed has its own clamping slots, and the clamping plates 32 are inserted into the clamping slots of the examination bed for fixing, so that the Velcro 31 on the top surface faces upward. When the Velcro 31 thorn surface is attached to the outer surface of the flexible coil wrapping the elbow joint, the Velcro 31 on the top surface of the fixing plate 3 is the fur surface. When the upper arm is naturally lowered during the examination, it is attached to the fur surface of the Velcro 31, shortening the overall length of the outer shell 231 and the inner plate 22 so that when the forearm swings, the elbow joint part will not move easily.

[0036] It can be understood that when the outer surface of the flexible coil wrapping the elbow joint is pasted with the fleece surface of the Velcro 31, the Velcro 31 on the top surface of the fixing plate 3 is the thorn surface. When checking the position, the upper arm is naturally lowered to stick to the thorn surface of the Velcro 31.

[0037] Specifically, notches 33 are provided at both ends of the fixing plate 3 , and the notches 33 are relatively recessed inward, so that the fixing mechanism 1 can pass through the notches 33 and be inserted into the card slot of the examination bed.

[0038] Working principle: When using the suspended elbow joint MRI scanning stand, the patient lies on his back on the examination bed, as close to the center of the magnet as possible. First, the upper arm of the arm to be examined is placed against the bed, and the forearm rests on the abdomen. Then, one end of the fixing mechanism 1 is inserted into the card slot of the examination bed for fixing. The wrist strap 21 is used to fix the front end of the arm close to the wrist joint. The outer shell 231 is slid and bolted into the limiting holes 221 at different positions as needed. The overall length of the outer shell 231 and the inner plate 22 is shortened so that the front end of the forearm is suspended away from the abdomen and is not affected by the abdominal respiratory movement.

[0039] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A suspended elbow joint magnetic resonance scanning stand, characterized in that: It includes a fixing mechanism and a supporting mechanism, one end of the fixing mechanism is movably connected to the supporting mechanism, and the other end of the fixing mechanism is inserted into a card slot provided in the examination bed. The supporting mechanism includes a wrist strap, an inner plate and an adjusting part. The wrist strap is arranged at one end of the adjusting part away from the fixing mechanism, and the limiting sliding sleeve of the adjusting part is arranged on the inner plate.

2. The suspended elbow joint magnetic resonance scanning stand according to claim 1, characterized in that: The inner plate is provided with a plurality of limiting holes, and the plurality of limiting holes are distributed at intervals along the length direction.

3. The suspended elbow joint magnetic resonance scanning stand according to claim 2, characterized in that: The adjusting part comprises an outer shell and a limiting bolt. A positioning hole is arranged at one end of the outer shell. The limiting bolt passes through the positioning hole and can be detachably mounted on the limiting hole.

4. The suspended elbow joint magnetic resonance scanning stand according to claim 3, characterized in that: A mounting hole is provided at the other end of the outer shell, and the mounting hole penetrates from one side of the outer shell to the other side along the width direction, and the wristband is mounted on the mounting hole.

5. The suspended elbow joint magnetic resonance scanning stand according to claim 4, characterized in that: The penetration direction of the positioning hole is perpendicular to the penetration direction of the mounting hole.

6. The suspended elbow joint magnetic resonance scanning stand according to claim 3, characterized in that: The limiting bolt is a bolt, and the limiting hole is a threaded hole.

7. The suspended elbow joint magnetic resonance scanning stand according to claim 1, characterized in that: The fixing mechanism comprises a pin and a buckle, the inner plate is hinged to the buckle via the pin, and the inner plate is rotatable relative to the pin.

8. The suspended elbow joint magnetic resonance scanning stand according to claim 1, characterized in that: It also includes a fixing plate, the top surface of which is provided with Velcro, and the bottom surface of which is provided with a card plate, and the card plate is used to be inserted into a card slot provided on the examination bed.

9. The suspended elbow joint magnetic resonance scanning stand according to claim 8, characterized in that: The clamping plates are symmetrically distributed at the four corners of the fixing plate.

10. The suspended elbow joint magnetic resonance scanning stand according to claim 8, characterized in that: Notches are provided at both ends of the fixing plate, and the notches are relatively concave inwards.

Images