CN113425281A

CN113425281A - Knee joint nuclear magnetic resonance auxiliary device

Info

Publication number: CN113425281A
Application number: CN202110844183.5A
Authority: CN
Inventors: 徐文杰; 梁伊乐; 徐芳芳
Original assignee: First Affiliated Hospital of Henan University of Science and Technology
Current assignee: First Affiliated Hospital of Henan University of Science and Technology
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-09-24

Abstract

A knee joint nuclear magnetic resonance auxiliary device effectively solves the problem that a patient is easy to shake to influence the imaging effect when carrying out knee joint nuclear magnetic resonance; the T-shaped cylinder is sleeved on the rotating shaft, the upper end of the T-shaped cylinder is hinged with the first leg plate, an H-shaped block is rotatably connected in the shell, and a cylindrical block is slidably connected in the shell through a mandril; the first leg plate and the second leg plate are hinged with a U-shaped rod, the upper end of the U-shaped rod is provided with an arc plate, the first leg plate and the second leg plate are connected with a pressure rod in a sliding manner, the upper end of the pressure rod is provided with a pressure plate, and the pressure rod is hinged with the U-shaped rod through a support rod; the invention has ingenious design and convenient use, not only improves the imaging effect, but also brings convenience to medical care personnel.

Description

Knee joint nuclear magnetic resonance auxiliary device

Technical Field

The invention relates to the technical field of auxiliary instruments in radiology departments, in particular to a nuclear magnetic resonance auxiliary device for a knee joint.

Background

The nuclear magnetic resonance imaging is to use the nuclear magnetic resonance principle, according to the different attenuation of the released energy in different structural environments in the material, the position and the type of the atomic nucleus forming the object can be known by detecting the emitted electromagnetic wave through an external gradient magnetic field, and accordingly, the structural image in the object can be drawn. When no obvious abnormality is found in the X-ray film through CT when the knee is in interlocking, has more effusion, is unstable, has severe pain or has limited activity, then considering ligament injury, synovium lesion or meniscus injury, the tissues are not developed on the X-ray film and CT, and the nuclear magnetic resonance examination is needed.

When a hospital performs nuclear magnetic resonance examination on the knee joint of a patient, the knee joint of the patient needs to be kept in a certain degree of flexion and external rotation for better imaging effect. Because the nuclear magnetic resonance examination lasts for a long time, a patient is difficult to keep a state for a long time, and the patient is easy to shake in the examination process, so that the imaging effect is influenced.

Disclosure of Invention

In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a knee joint nuclear magnetic resonance auxiliary device, which effectively solves the problem that the imaging effect is affected by the shaking of the patient during the knee joint nuclear magnetic resonance.

The technical scheme includes that the device comprises a shell with an upward opening, a return plate is hinged in the shell through a left-right axial rotating shaft, a guide plate is arranged at the right end of the return plate, a guide groove with front and rear ends inclined upwards is formed in the guide plate, a sliding block capable of sliding back and forth is arranged in the shell, an inserting column positioned in the guide groove is arranged at the upper end of the sliding block through a fixed rod, a first leg plate is hinged at the upper end of the return plate, a second leg plate is hinged at the right end of the first leg plate, a T-shaped cylinder positioned below the second leg plate is sleeved on the rotating shaft, the upper end of the T-shaped cylinder is hinged and connected with the first leg plate through a connecting rod, an H-shaped block positioned at the right side of the T-shaped cylinder is rotatably connected in the shell, the H-shaped block can swing left and right along with the sliding of the sliding block, ejector rods positioned between the T-shaped cylinder and the H-shaped block and positioned at the left and right sides are respectively slidably connected at the front and rear sides of the shell, the left end of the ejector rod can be contacted with the T-shaped cylinder, and the right end of the ejector rod is provided with a cylindrical block inserted in the H-shaped block;

the upper end of the U-shaped rod is provided with an arc-shaped plate, the front side and the rear side of the arc-shaped plate are opposite to each other, the first leg plate and the second leg plate are respectively connected with a pressing rod in the up-down direction in a sliding mode, the pressing rod is located between the two U-shaped rods which are opposite to each other in the front-back direction, the upper end of the pressing rod is provided with a pressing plate, and the front side and the rear side of the pressing rod are respectively hinged to the lower sides of the U-shaped rods on the corresponding sides through supporting rods.

The invention has ingenious conception and convenient use, the legs of the patient can be automatically fixed on the first leg plate and the second leg plate only by placing the legs on the soft pad at the upper end of the pressing plate, the knee joints of the patient can be bent and screwed outwards only by operating the U-shaped plate to slide forwards and backwards by medical personnel, and the left leg and the right leg of the patient can be used, thereby not only improving the imaging effect, but also bringing convenience to the medical personnel.

Drawings

Fig. 1 is an isometric view of the present invention.

FIG. 2 is a front isometric view in full section of the present invention with the first leg plate and the second leg plate removed.

FIG. 3 is a front elevational perspective view, in full section, of the present invention.

FIG. 4 is a right isometric view in full section of the present invention.

Figure 5 is a left side cutaway isometric view of the present invention.

FIG. 6 is a partial top plan, step-section isometric view of the present invention.

Fig. 7 is an enlarged view of a in fig. 6 of the present invention.

Fig. 8 is an isometric view of an H-block of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

The device is shown in figures 1 to 8, and comprises a shell 1 with an upward opening, a return plate 3 is hinged in the shell 1 through a left-right axial rotating shaft 2, a guide plate 4 is arranged at the right end of the return plate 3, a guide groove 5 with front and back ends inclined upwards is arranged on the guide plate 4, a sliding block 6 capable of sliding back and forth is arranged in the shell 1, an inserting column 7 positioned in the guide groove 5 is arranged at the upper end of the sliding block 6 through a fixed rod, a first leg plate 8 is hinged at the upper end of the return plate 3, a second leg plate 9 is hinged at the right end of the first leg plate 8, a T-shaped cylinder 10 positioned below the second leg plate 9 is sleeved on the rotating shaft 2, the upper end of the T-shaped cylinder 10 is hinged with the first leg plate 8 through a connecting rod 11, an H-shaped block 12 positioned at the right side of the T-shaped cylinder 10 is rotationally connected in the shell 1, the H-shaped block 12 can swing left and right along with the sliding of the sliding block 6, ejector rods 13 positioned between the T-shaped cylinder 10 and the H-shaped block 12 and in the left direction are respectively and right sliding connection at the front and back sides of the shell 1, the left end of the ejector rod 13 can be contacted with the T-shaped cylinder 10, and the right end of the ejector rod is provided with a cylindrical block 14 inserted into the H-shaped block 12;

the front side and the rear side of the first leg plate 8 and the second leg plate 9 are respectively hinged with a U-shaped rod 15 with an upward opening, the upper end of the U-shaped rod 15 is provided with an arc-shaped plate 16, the front side and the rear side of the arc-shaped openings of the two arc-shaped plates 16 on the same side are opposite, the first leg plate 8 and the second leg plate 9 are respectively connected with a pressing rod 17 in the vertical direction in a sliding manner, the pressing rod 17 is positioned between the two U-shaped rods 15 which are opposite in the front and the rear direction, the upper end of the pressing rod 17 is provided with a pressing plate 18, and the front side and the rear side of the.

In order to make the sliding block 6 slide back and forth, a sliding groove 20 in the back and forth direction is opened on the right side wall of the housing 1, and a U-shaped plate 21 which can slide in the sliding groove 20 is arranged at the right end of the sliding block 6.

In order to make the H-shaped block 12 swing left and right along with the sliding block 6, the left end of the sliding block 6 is provided with a U-shaped block 22 with an opening facing left, the right end of the H-shaped block 12 is provided with a rocker 23 in the left-right direction, and the free end of the rocker 23 is provided with an insertion block 24 inserted into the U-shaped block 22.

In order to limit the sliding block 6 conveniently, the front side and the rear side of the upper side wall and the lower side wall of the sliding groove 20 are respectively provided with a clamping groove 25, the front end of the U-shaped plate 21 is slidably connected with an L-shaped plate 26 which can be clamped in the clamping groove 25, and the right end of the L-shaped plate 26 is connected with the U-shaped plate 21 through a pressure spring 27.

In order to enable the T-shaped cylinder 10 to automatically reset, a fixing plate located at the left side of the T-shaped cylinder 10 is arranged in the housing 1, and a first spring 28 located between the fixing plate and the T-shaped cylinder 10 is sleeved on the rotating shaft 2.

In order to keep the right end of the second leg plate 9 in contact with the clip plate 3, the front end and the rear end of the clip plate 3 are respectively provided with a U-shaped stop lever 29, and the front end and the rear end of the second leg plate 9 are respectively provided with a stop post 30 positioned between the stop lever 29 and the clip plate 3.

In order to make the pressure plate 18 automatically reset, the pressure rod 17 is sleeved with a second spring 31 positioned below the pressure plate 18.

In order to increase the comfort of the patient, the upper end of the pressure plate 18 is provided with an arc-shaped pad 32 with an upward opening.

When the examination bed is used, a medical worker enables a patient to lie on the examination bed, then the shell 1 is placed below the knee joint of the patient to be examined, the thigh of the patient is placed between the two arc-shaped plates 16 above the first leg plate 8, the shank of the patient is placed between the two arc-shaped plates 16 above the second leg plate 9, and the thigh and the shank of the patient are respectively contacted with the arc-shaped pads 32 on the corresponding sides of the thigh and the shank;

under the action of gravity, thighs and shanks of a patient are respectively driven to press the pressure plates 18 on the corresponding sides of the thighs and the shanks to move downwards through the arc-shaped pads 32, the pressure plates 18 compress the second springs 31 downwards and drive the pressure rods 17 to slide downwards, the lower ends of the pressure rods 17 drive the two support rods 19 on the corresponding sides of the pressure rods to swing downwards, the two support rods 19 drive the lower ends of the two U-shaped rods 15 to swing towards the opposite directions, the upper ends of the two U-shaped rods 15 start to swing towards the opposite directions, the distance between the two front and back opposite arc-shaped plates 16 is gradually reduced until the arc-shaped plates 16 are attached to the skin of the legs of the patient, and the pressure plates 18 stop moving downwards to complete the fixation of the legs of the patient;

when the nuclear magnetic resonance examination is performed on the knee joint of the right leg of the patient, a medical worker can pull the U-shaped plate 21 to move forwards in the sliding groove 20, the U-shaped plate 21 drives the sliding block 6 to slide forwards, the sliding block 6 drives the inserting column 7 to move forwards in the guide groove 5 through the fixed rod, meanwhile, the sliding block 6 drives the U-shaped block 22 to move forwards, the U-shaped block 22 drives the rocker 23 to swing forwards through the inserting block 24, the rocker 23 drives the front end of the H-shaped block 12 to swing leftwards, the front end of the H-shaped block 12 drives the ejector rod 13 on the front side to slide leftwards through the cylindrical block 14, the rear end of the H-shaped block 12 drives the ejector rod 13 on the rear side to slide rightwards through the cylindrical block 14, the left end of the ejector rod 13 on the rear side is separated from contact with the T-shaped cylinder 10, and the left end of the ejector rod 13 on the front side drives the T-shaped cylinder 10 to move leftwards;

the T-shaped cylinder 10 compresses the first spring 28 leftwards, meanwhile, the T-shaped cylinder 10 drives the right end of the first leg plate 8 to swing upwards through the connecting rod 11, the first leg plate 8 pulls the left end of the second leg plate 9 to swing upwards, two limiting columns 30 at the right end of the second leg plate 9 move leftwards under limiting rods 29 at the corresponding sides of the limiting columns respectively, the right end of the second leg plate 2 is prevented from being separated from the clip plate 3, the first leg plate 8 drives the thigh of the patient to swing upwards, the second leg plate 9 drives the shank of the patient to swing upwards, and the knee joint of the patient gradually changes into a buckling state;

when the inserting column 7 moves to the front end of the guide groove 5, because the front end of the guide groove 5 inclines upwards, the inserting column 7 drives the front end of the guide plate 4 to swing downwards through the guide groove 5, the guide plate 4 drives the front end of the return plate 3 to swing downwards around the rotating shaft 2, the return plate 3 drives the right leg of the patient to rotate outwards through the first leg plate 8 and the second leg plate 9, the U-shaped plate 21 drives the L-shaped plate 26 to move forwards, when the L-shaped plate 26 moves to the right of the two clamping grooves 25 on the front side, the L-shaped plate 26 is clamped into the two clamping grooves 25 on the front side under the action of the pressure spring 27, at the moment, the medical staff can loosen the U-shaped plate 21, the U-shaped plate 21 is limited at the current position, the knee joint of the right leg of the patient is in a buckling and outward rotating state, and the medical staff can start to perform nuclear magnetic resonance examination on the knee joint of the right leg of the patient;

after the examination is finished, the medical staff can pull the L-shaped plate 26 rightwards, the L-shaped plate 26 compresses the pressure spring 27 rightwards and leaves the two clamping grooves 25 on the front side, when the L-shaped plate 26 leaves the two clamping grooves 25 on the front side, the second spring 31 drives the T-shaped cylinder 10 to slide rightwards, the T-shaped cylinder 10 drives the first leg plate 8 and the second leg plate 9 to swing downwards through the connecting rod 11, the first leg plate 8 and the second leg plate 9 drive the legs of the patient to gradually become a straightened state, meanwhile, the T-shaped cylinder 10 drives the front end of the H-shaped block 12 to swing rightwards through the ejector rod 13, the H-shaped block 12 drives the U-shaped block 22 to move backwards through the rocker 23 and the inserting block 24, the U-shaped block 22 drives the sliding block 6 to slide backwards, and the sliding block 6 drives the inserting column 7 to move backwards in the guide groove 5 through the fixing rod;

when the sliding block 6 drives the U-shaped plate 21 to slide to the middle of the sliding groove 20, the inserting column 7 moves to the middle of the guide groove 5, the inserting column 7 drives the guide plate 4 to swing to a horizontal state, the guide plate 4 drives the return plate 3 to swing to a horizontal state, the return plate 3 drives the legs of the patient to swing to a horizontal state through the first leg plate 8 and the second leg plate 9, at this time, the device is restored to the state before use, the patient only needs to lift the legs upwards, the pressing plate 18 loses the pressure of the leg gravity, the second spring 31 starts to restore the original length and drives the pressing plate 18 to move upwards, the pressing plate 18 drives the pressing rod 17 to slide upwards, the pressing rod 17 pulls the two supporting rods 19 to swing upwards, the two supporting rods 19 drive the lower ends of the two U-shaped rods 15 to swing towards opposite directions, the upper ends of the two U-shaped rods 15 start to swing towards opposite directions, the two U-shaped rods 15 drive the two front and back opposite arc-shaped plates 16 to gradually separate until the second spring 31 restores to the original length, the patient can move the legs out of the space between the two arc-shaped plates 16 which are opposite from each other;

when the nuclear magnetic resonance examination is the knee joint of patient's left leg, medical personnel only need place patient's left leg on first leg board 8 and second leg board 9, two relative arcs 16 press from both sides patient's left leg tightly around, then medical personnel pull U-shaped board 21 backward and make L-shaped board 26 block in two draw-in grooves 25 of rear side, first leg board 8 and second leg board 9 will make patient's left leg become the bucking state, it is outer rotatory that 3 rear end downswing of board back simultaneously drives patient's left leg, then medical personnel can carry out the nuclear magnetic resonance examination to patient's left leg.

The invention has novel conception, ingenious structure, convenient operation and strong practicability, the leg of the patient can be clamped only by placing the leg on the soft cushion at the upper end of the pressing plate by the patient, the knee joint of the leg of the patient can be driven to be in a buckling state by the arranged arc-shaped plate and the U-shaped rod, the arranged return plate can drive the leg of the patient to rotate outwards, the leg of the patient can be kept in a position required by examination by fixing, the leg of the patient is prevented from shaking after being kept in a posture for a long time, and therefore, a better imaging effect is obtained, and medical staff can control the outward rotation of the left leg or the right leg of the patient by controlling the U-shaped plate, thereby being convenient for the medical staff to use.

Therefore, the knee joint nuclear magnetic resonance auxiliary device provided by the invention can effectively solve the problem that imaging effect is influenced by the fact that a patient is easy to shake when knee joint nuclear magnetic resonance is carried out on the patient, is simple in structure operation and convenient to use, and improves the imaging effect of the patient on the knee joint nuclear magnetic resonance examination.

Claims

1. A nuclear magnetic resonance auxiliary device for knee joint comprises a shell (1) with an upward opening, the novel rotary drum is characterized in that a rotary plate (3) is hinged to a left rotary shaft (2) and a right rotary shaft in the axial direction in a shell (1), a guide plate (4) is arranged at the right end of the rotary plate (3), guide grooves (5) with front and back ends inclining upwards are formed in the guide plate (4), a sliding block (6) capable of sliding forwards and backwards is arranged in the shell (1), an inserting column (7) located in the guide groove (5) is arranged at the upper end of the sliding block (6) through a fixed rod, a first leg plate (8) is hinged to the upper end of the rotary plate (3), a second leg plate (9) is hinged to the right end of the first leg plate (8), a T-shaped drum (10) located below the second leg plate (9) is sleeved on the rotary shaft (2), the upper end of the T-shaped drum (10) is hinged to the first leg plate (8) through a connecting rod (11), and an H-shaped block (12) located on the right of the T-shaped drum (10) is rotationally connected to the shell (1): the H-shaped block (12) can swing left and right along with the sliding of the sliding block (6), the front side and the rear side of the shell (1) are respectively connected with a push rod (13) which is positioned between the T-shaped cylinder (10) and the H-shaped block (12) in the left-right direction in a sliding way, the left end of the push rod (13) can be contacted with the T-shaped cylinder (10), and the right end of the push rod is provided with a cylindrical block (14) inserted into the H-shaped block (12);

first leg board (8) and second leg board 9 around both sides articulate respectively and have U type pole (15) that the opening is up, U type pole (15) upper end is equipped with arc (16), two arc (16) arcs of homonymy are relative around, on first leg board (8) and second leg board (9) respectively sliding connection have depression bar (17) of direction from top to bottom, depression bar (17) are located around between two relative U type poles (15), depression bar (17) upper end is equipped with clamp plate (18), depression bar (17) around both sides respectively through bracing piece (19) rather than U type pole (15) downside hinge connection that corresponds the side.

2. The nuclear magnetic resonance auxiliary device for the knee joint according to claim 1, wherein the right side wall of the shell (1) is provided with a sliding groove (20) in the front-back direction, and the right end of the sliding block (6) is provided with a U-shaped plate (21) capable of sliding in the sliding groove (20).

3. The nuclear magnetic resonance auxiliary device for the knee joint according to claim 1, wherein the left end of the sliding block (6) is provided with a U-shaped block (22) with an opening facing to the left, the right end of the H-shaped block (12) is provided with a rocker (23) in the left-right direction, and the free end of the rocker (23) is provided with an insertion block (24) inserted into the U-shaped block (22).

4. The nuclear magnetic resonance auxiliary device for the knee joint according to claim 1, wherein the front and rear sides of the upper and lower side walls of the sliding groove (20) are respectively provided with a clamping groove (25), the front end of the U-shaped plate (21) is slidably connected with an L-shaped plate (26) which can be clamped in the clamping groove (25), and the right end of the L-shaped plate (26) is connected with the U-shaped plate (21) through a pressure spring (27).

5. The nuclear magnetic resonance auxiliary device for knee joints according to claim 1, wherein the shell (1) is internally provided with a fixed plate positioned at the left side of the T-shaped cylinder (10), and the rotating shaft (2) is sleeved with a first spring (28) positioned between the fixed plate and the T-shaped cylinder (10).

6. The nuclear magnetic resonance auxiliary device for knee joints according to claim 1, wherein the front end and the rear end of the return-shaped plate (3) are respectively provided with a U-shaped limiting rod (29), and the front end and the rear end of the second leg plate (9) are respectively provided with a limiting column (30) positioned between the limiting rod (29) and the return-shaped plate (3).

7. The nuclear magnetic resonance auxiliary device for knee joint according to claim 1, wherein the pressing rod (17) is sleeved with a second spring (31) positioned below the pressing plate (18).

8. The nuclear magnetic resonance auxiliary device for the knee joint according to claim 1, wherein the upper end of the pressing plate (18) is provided with an arc-shaped pad (32) with an upward opening.