Knee joint MR examination fixing device

Abstract

The utility model discloses a knee joint MR examination fixing device, and relates to the technical field of knee joint examination, the knee joint MR examination fixing device comprises an examination bed, the examination bed is provided with a leg binding structure and a foot binding structure, the leg binding structure comprises four groups of first binding rings and second binding rings, the leg binding structure can bind the thighs and the shanks of a patient, and the foot binding structure can bind the thighs and the shanks of the patient. The foot binding structure comprises a foot binding groove and a sliding plate, the foot binding groove can bind the feet of a patient, and the four sets of first binding rings are fixedly connected with the examination bed, are in a rectangular shape, are parallel to one another and are symmetrically arranged; by means of the leg restraining structure, thighs and shanks can be restrained at the same time, when the thighs and the shanks of a patient are restrained at the same time, the phenomenon that knee joints shake or deviate can be avoided, therefore, the phenomenon of motion artifacts or double images cannot occur during scanning inspection, repeated scanning is not needed, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of knee joint examination technology, specifically a knee joint MR examination fixation device. Background Technology

[0002] The knee joint is easily injured during human movement, causing knee instability and various functional disorders such as internal rotation, varus / valgus, and hyperextension. After a knee injury, an MRI is necessary. MRI can more clearly detect lesions in the soft tissues around the knee joint and can also observe the surrounding soft tissues and ligaments. It is currently the safest and most reliable examination.

[0003] In the prior art, a Chinese patent discloses a knee joint MR examination fixation device (authorization announcement number CN215457985U). This patented technology can facilitate the alignment and fixation of the knee joints of both legs (or one leg) by setting a fixation groove in the leg seat, which is convenient for patients to perform MR examinations and thus greatly improves its practical performance.

[0004] However, the aforementioned structure can only fix one part of the leg (thigh or calf) when fixing the leg. Fixing only one part cannot avoid leg shaking or displacement. Therefore, when the leg shakes or shifts during a knee joint scan, artifacts and ghosting are easily generated, leading to inaccurate data and requiring repeated scans, thus reducing examination efficiency. Therefore, a knee joint MR examination fixation device is provided to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a fixation device for knee joint MR examination to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A knee joint MRI examination fixation device includes an examination bed with a leg restraint structure and a foot restraint structure. The leg restraint structure includes four sets of first restraint rings and second restraint rings, which can restrain the patient's thigh and calf. The foot restraint structure includes a foot restraint groove and a sliding plate, which can restrain the patient's foot.

[0008] As a further improvement of this utility model, the four sets of the first restraint rings are all fixedly connected to the examination bed and are arranged in a rectangular shape, parallel to each other and symmetrically.

[0009] As a further embodiment of this utility model: each of the first restraining rings is hinged with a second restraining ring, the interior of the second restraining ring is provided with an inflatable airbag, and the outer side of each of the second restraining rings is equipped with a one-way air inlet pipe and an exhaust pipe, the one-way air inlet pipe and the exhaust pipe are connected to the inflatable airbag, and the exhaust pipe is threaded with a pipe cap.

[0010] As a further improvement of this utility model: a slot is provided on one side of the first restraining ring, and a locking plate is provided at the hinge of the second restraining ring.

[0011] As a further embodiment of this utility model: the foot groove is formed on the sliding plate, the foot groove is in two sets and symmetrically arranged, a bonding plate is fixedly connected between the two sets of foot grooves, a connecting block is fixedly connected to one side of each of the two sets of foot grooves, and a binding strap is sewn on the connecting block.

[0012] As a further embodiment of this utility model: the sliding plate is slidably connected to the side wall of the examination bed via a sliding block, and one end of the sliding block is helically connected to a limit rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The designed leg-binding structure can simultaneously bind both the thighs and calves. When the patient's thighs and calves are bound at the same time, it can prevent the knee joint from shaking or shifting, thus avoiding motion artifacts or ghosting during scanning. This eliminates the need for repeated scanning and improves detection efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the leg-binding structure in this utility model;

[0017] Figure 3 This is a schematic diagram of one embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the foot structure in this utility model;

[0019] The correspondence between the labels and component names in the attached figures is as follows:

[0020] 1. Examination bed; 2. Leg binding structure; 201. First restraint ring; 202. Second restraint ring; 203. Slot; 204. Inflatable airbag; 205. Clamping plate; 206. One-way air inlet pipe; 207. Exhaust pipe; 3. Foot binding structure; 301. Sliding plate; 302. Limiting rod; 303. Sliding block; 304. Connecting block; 305. Restraint strap; 306. Adhesive plate; 307. Foot binding groove. Detailed Implementation

[0021] Please see Figures 1-4 A knee joint MR examination fixation device includes an examination bed 1, on which a leg restraint structure 2 and a foot restraint structure 3 are provided. The leg restraint structure 2 includes four sets of first restraint rings 201 and second restraint rings 202, which can restrain the patient's thigh and calf. The foot restraint structure 3 includes a foot restraint groove 307 and a sliding plate 301, which can restrain the patient's foot.

[0022] The leg-binding structure 2 can simultaneously bind both the thigh and the calf. When the patient's thigh and calf are bound at the same time, the knee joint can be prevented from shaking or shifting during MR examination, thus avoiding motion artifacts or ghosting during the scan and eliminating the need for repeated scans, thereby improving detection efficiency.

[0023] Preferably, all four sets of first restraint rings 201 are fixedly connected to the examination bed 1, and are arranged in a rectangular shape, parallel to each other and symmetrically.

[0024] The four sets of first restraint rings 201 can be set in pairs to restrain the patient's thighs and calves respectively, so that the patient's knee joint is located between the two sets of first restraint rings 201. When the patient's thighs and calves are restrained at the same time, the legs cannot exert force, thereby avoiding leg shaking (suitable for ADHD patients or children without self-control). This method can avoid knee shaking during patient examination and treatment, and avoid ghosting artifacts caused by shaking during MR examination, thus improving the accuracy of MR examination.

[0025] Preferably, each of the first restraint rings 201 is hinged with a second restraint ring 202. The interior of the second restraint ring 202 is provided with an inflatable airbag 204. The outer side of each of the second restraint rings 202 is equipped with a one-way air inlet pipe 206 and an exhaust pipe 207. The one-way air inlet pipe 206 and the exhaust pipe 207 communicate with the inflatable airbag 204. The exhaust pipe 207 is threaded with a pipe cap.

[0026] During the examination, the patient first lies on the examination bed 1, with their thighs and calves placed inside the first restraint ring 201. Then, the second restraint ring 202 is fastened onto the first restraint ring 201. Next, the air inflator (inflator) is aligned with the one-way air inlet pipe 206, allowing the air inside the inflator to enter the inflatable airbag 204 through the one-way air inlet pipe 206, causing the airbag 204 to inflate. The inflated airbag 204 compresses and restrains the human tissue (thighs and calves) inside the first restraint ring 201 and the second restraint ring 202, preventing the thighs and calves from shaking during the examination. After the examination, the cap on the exhaust pipe 207 can be opened to allow the air inside the inflatable airbag 204 to be discharged through the exhaust pipe 207, thus facilitating the removal of the thighs and calves from inside the first restraint ring 201 and the second restraint ring 202.

[0027] Preferably, a slot 203 is provided on one side of the first restraining ring 201, and a locking plate 205 is provided at the hinge of the second restraining ring 202.

[0028] Specifically, before the second restraining ring 202 is fastened onto the first restraining ring 201, the locking plate 205 is pinched tightly with the index finger and thumb, causing the locking plate 205 to deform. After the locking plate 205 is inserted into the locking groove 203, the locking plate 205 will return to its original shape due to its own elasticity, thereby engaging with the inner wall of the locking groove 203, thus making the first restraining ring 201 and the second restraining ring 202 tightly connected and preventing any loosening.

[0029] Preferably, the foot groove 307 is formed on the sliding plate 301. The foot groove 307 is in two sets and symmetrically arranged. A bonding plate 306 is fixedly connected between the two sets of foot grooves 307. A connecting block 304 is fixedly connected to one side of each of the two sets of foot grooves 307. A binding strap 305 is sewn on the connecting block 304.

[0030] In this configuration, when the patient's thighs and calves are placed inside the first restraint ring 201, the patient's feet are placed inside the two sets of foot restraint grooves 307. Then, the restraint straps 305 on the connecting block 304 are attached to the bonding plate 306 via Velcro. The restraint straps 305 limit and fix the feet inside the foot restraint grooves 307. When the patient straightens their legs, the sliding plate 301 slides on the examination table 1 until the patient's legs are fully straight. The above structure can restrain the patient's feet through the cooperation of the foot restraint grooves 307 and the restraint straps 305, preventing the patient's feet from shaking and causing the legs to shake. The shaking of the legs will affect the examination scan. Therefore, the foot restraint structure 3 can avoid the artifact phenomenon caused by the feet shaking and causing the legs to shake.

[0031] Preferably, the sliding plate 301 is slidably connected to the side wall of the examination bed 1 via the sliding block 303, and one end of the sliding block 303 is screwed to a limit rod 302.

[0032] When the patient straightens their legs, the sliding plate 301 slides on the examination bed 1 until the patient's legs are fully straight. Then, the limiting rod 302 can be rotated. After being rotated, the limiting rod 302 will be pressed against the side wall of the examination bed 1, thereby increasing the friction between the sliding plate 301 and the examination bed 1, preventing the sliding plate 301 from moving on the examination bed 1. This fixes the position of the patient's legs and feet on the examination bed 1 and improves the accuracy of the MR examination.

[0033] Furthermore, none of the components in the above structure are made of metallic materials. Non-metallic materials can avoid affecting the accuracy of MR (magnetic resonance) examinations.

[0034] Working principle: During the examination, the patient first lies on the examination bed 1, with the thighs and calves placed inside the first restraint ring 201. Then, the second restraint ring 202 is fastened onto the first restraint ring 201. Finally, the air inflator (inflator) is aligned with the one-way air inlet pipe 206, allowing air from inside the inflator to enter the inflatable air bag 204 through the one-way air inlet pipe 206, causing the air bag 204 to inflate. The inflated air bag 204 compresses and restrains the human tissue (thighs and calves) inside the first restraint ring 201 and the second restraint ring 202, preventing the thighs and calves from moving during the examination. If shaking occurs, after the examination is completed, the cap on the exhaust pipe 207 can be opened to allow the gas inside the inflatable airbag 204 to be discharged through the exhaust pipe 207. This facilitates the removal of the thigh and calf from the first restraint ring 201 and the second restraint ring 202. When the patient's thigh and calf are restrained simultaneously, the leg cannot exert force, thus preventing leg shaking (suitable for ADHD patients or children without self-control). This method can prevent knee shaking during patient examination and avoid ghosting artifacts caused by shaking during MR examination, thereby improving the accuracy of MR examination.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fixation device for knee joint MR examination, characterized in that, The examination includes an examination bed (1), on which a leg binding structure (2) and a foot binding structure (3) are provided. The leg binding structure (2) includes four sets of first binding rings (201) and second binding rings (202). The leg binding structure (2) can bind the patient's thighs and calves. The foot binding structure (3) includes a foot binding groove (307) and a sliding plate (301). The foot binding groove (307) can bind the patient's feet.

2. The knee joint MR examination fixation device according to claim 1, characterized in that, The four sets of the first restraint rings (201) are all fixedly connected to the examination bed (1), and are arranged in a rectangular shape, parallel to each other and symmetrically.

3. The knee joint MR examination fixation device according to claim 2, characterized in that, Each of the first restraint rings (201) is hinged with a second restraint ring (202). The interior of the second restraint ring (202) is provided with an inflatable airbag (204). The outer side of the second restraint ring (202) is equipped with a one-way air inlet pipe (206) and an exhaust pipe (207). The one-way air inlet pipe (206) and the exhaust pipe (207) are connected to the inflatable airbag (204). The exhaust pipe (207) is threaded with a pipe cap.

4. The knee joint MR examination fixation device according to claim 3, characterized in that, The first restraint ring (201) has a slot (203) on one side, and the second restraint ring (202) has a locking plate (205) at its hinge.

5. A knee joint MR examination fixation device according to claim 1, characterized in that, The foot groove (307) is formed on the sliding plate (301). The foot groove (307) is arranged in two sets and symmetrically. A bonding plate (306) is fixedly connected between the two sets of foot grooves (307). A connecting block (304) is fixedly connected to one side of each of the two sets of foot grooves (307). A binding strap (305) is sewn onto the connecting block (304).

6. A knee joint MR examination fixation device according to claim 5, characterized in that, The sliding plate (301) is slidably connected to the side wall of the examination bed (1) via a sliding block (303), and one end of the sliding block (303) is helically connected to a limit rod (302).

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