KR102497908B1 - Knee joint assistant device for radiographic - Google Patents

Abstract

The present invention relates to a knee posture aid for radiography, and more particularly, by always uniformly and easily inducing a load-bearing posture of a subject's knee joint without relying on a subject's will or a sense based on an examiner's experience. The present invention relates to a knee posture aid for radiography that provides a posture of a subject optimized for a general radiographic examination of a knee joint based on the Rosenberg method.

Description

Knee posture aid for radiography {KNEE JOINT ASSISTANT DEVICE FOR RADIOGRAPHIC}

The present invention relates to a knee posture aid for radiography, and more particularly, by always uniformly and easily inducing a load-bearing posture of a subject's knee joint without relying on a subject's will or a sense based on an examiner's experience. The present invention relates to a knee posture aid for radiography that provides a posture of a subject optimized for a general radiographic examination of a knee joint based on the Rosenberg method.

As a method for observing the presence or absence of lesions for various knee-related diseases including knee joint pain in clinical practice, general radiographic examination using radiation, MRI examination, bone scan examination, joint fluid examination, and examination using arthroscope diagnosis are being performed. However, considering the cost and efficiency of the examination, general radiographic examination is mainly used, which is inexpensive and does not burden the subject's body.

General radiographic examination of the knee joint is performed based on the Rosenberg Method (hereinafter referred to as the Rosenberg method), which is one of the weight bearing examination techniques.

The Rosenberg method is a technique for confirming the presence or absence of arthritis between the joints of the tibia and femur by applying a load to the knee joint. In general, the test is performed after bending the knee at a certain angle between the radiation detector and the generator.

The Rosenberg method is a problem of objectivity because the standards for determining the degree of bending of the subject's knee and the direction of radiation are all determined based on the experience of the radiologist, and it was difficult to guarantee the medical diagnostic value and reliability. There were limits.

In addition, in order to conduct the examination with the Rosenberg method, the subject must hold out for a predetermined amount of time for radiography in a crouched state with the knee bent, which is not only very difficult, but also requires a lot of strength and makes it difficult for the subject to maintain the posture so that the body does not shake or maintain a fixed state. If not, radiography cannot be performed, and even if radiography is performed, clear images cannot be obtained.

In addition, since most of the subjects who examine the knee joint are accompanied by knee pain, such a posture is burdensome to the subject, or in most cases, such a posture cannot be taken voluntarily.

In order to improve this, a bending plate-shaped assistive device that tilts the subject's knee at a predetermined angle is sometimes used, but each subject has a different height and body shape, and the test must be tailored accordingly. As a fixed instrument, it does not meet the different shooting conditions for each subject.

Therefore, conventional assistive devices are only limited to the function of standing on which the bent knee can be leaned, and it is impossible to acquire accurate radiographic images according to the subject. There is a need for an imaging aid capable of performing accurate radiography of the knee joint according to the body shape of the person.

Registered Patent No. 10-1425316

The present invention was created in order to solve these problems in view of the above-mentioned problems in the prior art, and without the need to rely on the will of the subject or a sense based on the experience of the examiner, the load-bearing posture of the subject's knee joint can always be uniformly and easily By inducing, it provides an optimal posture for general radiological examination of the knee joint based on the Rosenberg method, and also flexibly adjusts the bending degree of the knee joint and the position where the knee joint is mounted according to the subject's body shape, physical condition, disease state, etc. Its purpose is to provide a knee posture aid capable of obtaining reliable images for objectively diagnosing knee arthrosis through an accurate examination and guaranteeing the convenience of the examination by enabling the examination.

The present invention is a means for achieving the above object, in a knee posture aid for radiography that fixes and supports the knee joint of a subject in a standing state between a radiation generator and a radiation detector at a predetermined angle, the knee joint bent at a predetermined angle a mounting portion in which the omnidirectional portion of the is mounted; And a support frame for supporting the mounting portion to be adjustable in height up and down.

In addition, the support frame unit, a fixed frame constituting the lower portion of the support frame unit; a movable frame installed on the fixed frame to be movable in a vertical direction and having a guide hole formed in a vertical direction; and a fixing member for fixing the position of the movable frame on the fixed frame.

In addition, the holding unit, a fixing table mounted on the outside of the lower portion of the movable frame; a movable table connected to the guide hole and installed to be movable up and down along the longitudinal direction of the movable frame; and a cradle whose center is foldable to form an inner angle to accommodate the knee joint portion with the inner angle portion and which ends are installed connected to the fixed base and the movable base, respectively.

In addition, a lower ball insertion hole is recessed at the front of the fixing table, and the movable table includes: a movable bracket made of a hollow shape for accommodating the movable frame therein; and a guide cylinder fastened by mutually penetrating the guide holes of the movable bracket and the movable frame and having an upper ball inlet recessed at the front.

In addition, the cradle includes an upper arm having an upper ball connected to the upper ball insertion hole at one end and an upper plate coupled to the other side; And a lower arm having a lower ball connected to the lower ball insertion hole at one end and a lower plate coupled to the other side, wherein the other ends of the upper plate and the lower plate are rotatably installed via a hinge pin. .

The present invention is optimized for general radiological examination of the knee joint based on the Rosenberg method by always uniformly and easily inducing the load-bearing posture of the knee joint of the subject without relying on the will of the subject or the sense based on the experience of the examiner. In addition, the degree of bending of the knee joint and the location where the knee joint is mounted can be flexibly adjusted according to the subject's body shape, physical condition, disease state, etc., thereby ensuring the convenience of the examination. It is possible to obtain highly reliable images for objectively diagnosing knee arthropathy.

1 is a view showing the overall appearance of a knee posture aid for radiography according to the present invention.
Figure 2 is a view showing a state of use of the knee posture aid for radiography according to the present invention.
Figure 3 is a view schematically showing the disassembly configuration of the mounting portion.
4 is a view schematically showing an exploded configuration of a movable table;
5 is a view schematically showing cross-sectional configurations of a movable table and a support frame part.
6 is a diagram showing a process in which the movable frame is moved in the vertical direction by way of example;
7 is a view illustratively illustrating a process of adjusting an interior angle of a cradle according to a downward movement of a movable table.
8 is a view for explaining the operation of the guide cylinder.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the examples described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer explanation. It should be noted that in each drawing, the same members are sometimes indicated by the same reference numerals. Detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention are omitted.

Prior to the detailed description of the invention, if a non-strict direction standard is specified with reference to the accompanying drawings for convenience of description, up and down (y), left and right (x), front and back (z) in the state shown in FIG. Divide and specify the direction according to this standard in descriptions related to other drawings.

The knee posture aid for radiography according to the present invention (hereinafter referred to as the knee posture aid) is for assisting in maintaining the correct posture of a subject's knee in order to perform a general radiographic examination of the subject's knee joint based on the Rosenberg method, and includes a radiation generator ( It serves to fix and support the knee joint of the subject in a standing state between R2) and the radiation detector R1 at a certain angle.

In other words, the radiation detector R1 is positioned in front of the knee posture aid and the radiation generator R2 is positioned behind the knee posture aid, and the subject assumes a posture for radiography in a standing state at the rear of the knee posture aid.

More specifically, the knee posture aid according to the present invention is largely defined as including a mounting portion 100 and a support frame portion 200 as shown in FIG. 1 .

First, the support frame part 200 is a means for supporting the mounting part 100 upward by a predetermined distance on the ground of the recording room in consideration of the anatomical height of the knee joint, in particular. The mounting portion 100 may be supported so as to be height-adjustable up and down.

The support frame unit 200 may be provided as a pair spaced apart in parallel at a predetermined distance from side to side, and support both left and right sides of the mounting unit 100, respectively.

Each support frame part 200 is installed to be movable in the vertical direction on the fixed frame 210 constituting the lower part of the support frame part 200 and the fixed frame 210, and the guide hole 221 in the vertical direction ) It is illustrated as including a movable frame 220 formed and a fixing member 230 for fixing the movable frame 220 on the fixed frame 210.

The fixed frame 210 is formed in the form of an empty pipe and may accommodate a lower part of the movable frame 220 therein. At the lower end of the fixing frame 210, support legs 211 are branched in the front and rear or left and right directions so that the knee posture aid does not fall on the ground, and is configured to sufficiently secure a support area with the ground. If necessary, a suction plate for adsorption to the ground is formed on the lower surface of the support leg to reinforce the supporting force of the support leg 211 .

A fixture 212 having a screw thread may be formed through the fixed frame 210, and the fixing member 230 is fixed to the fixture 212 by a screwing method, and the movable frame 220 accommodated in the fixed frame 210. ) can be press-fitted.

The movable frame 220 is formed in the form of a pipe complementary to the inner space of the fixed frame 210 and is configured to be selectively inserted into or withdrawn from the inner space of the fixed frame 210, and the front and rear surfaces facing each other are respectively It is made of a structure in which the guide hole 221 is formed through.

The guide hole 221 extends along the vertical longitudinal direction of the movable frame 220 to guide the positional movement of the movable table 120 to be described later. In particular, the guide hole 221 has the movable table 120 to be described later. ) Of the detailed configuration, the guide cylinder 122 may be guided in the vertical direction in a through-coupled state.

The movable frame 220 may be formed in the form of an angular pipe so as not to arbitrarily rotate relatively while being coupled to the fixed frame 210, and the inside of the fixed frame 210 may also form a complementary angular space therewith.

The fixing member 230 is coupled to the fixture 212 in a screw manner and passes through the fixing frame 210 to press-fit the surface of the movable frame 220 inserted into the fixing frame 210, and is a conventional bolt. can be made in the form

That is, when the fixing member 230 is deeply inserted into the fixture 212 in the direction of the movable frame 220, the end of the fixing member 230 inserted into the fixture 212 is inserted into the movable frame 210. The position of the movable frame 220 is constrained by press-fitting the outer surface of the 220 more strongly, and conversely, when the fixing member 230 is released from the fixture 212 in the opposite direction to the movable frame 220, the fixing member 230 The end of the movable frame 220 is spaced apart from the movable frame 220 to release the constraint of the movable frame 220, and thus, the movable frame 220 can freely move in the vertical direction.

The movable frame 220 moves up and down in the fixed frame 210 while supporting the holder 100, so that the relative height of the holder 100 can be adjusted by adjusting the height of the movable frame 220.

The mounting part 100 is a part where the omnidirectional part of the knee joint bent at a certain angle is mounted. The relative height of the knee joint part is different for each subject according to the physical condition of the subject, so the vertical height of the movable frame 220 Through the adjustment, the relative height of the holder 100 can be adjusted according to the subject's physical condition.

That is, during a general radiographic examination of subjects of various ages and various physical conditions, the vertical height of the mounting unit 100 can be more easily adjusted in response to the position of the knee joint, and the subject's knee is assisted in an optimal position. , the subject can take the examination posture more comfortably.

The mounting unit 100 guides the subject's knee joint to naturally bend at a set angle according to the purpose of the examination, etc., so that the posture optimized for general radiological examination of the knee joint based on the Rosenberg method is maintained without any difficulty while the radiographic examination is in progress. can keep it

When the testee bends the knee joint finely toward the holding part 100 in a state of standing behind the holding part 100 so that the omnidirectional part of the knee joint comes into close contact with the holding part 100, the inner angle of the holding part 100 is set. The knee joint may be naturally bent according to the angle θ.

That is, in the case of the knee posture aid according to the present invention, the load is applied to the knee joint even while standing behind the radiation detector R1, rather than assisting the subject to take a posture for the radiation examination by sitting on a separate chair or lying on a bed. It is to assist the subject so that he can easily take the posture that is applied.

That is, it can be said that it is more effective in radiological examinations in cases where the examinee is in a wheelchair or cannot easily get on and off a medical bed or chair due to special circumstances, such as, for example, mobility limitations.

In addition, when the subject sits on a chair or lies on a bed and examines the knee joint, there is a limit to obtaining an accurate image because the subject's weight is not loaded on the knee joint.

In addition, since it is possible to omit a chair or bed incidentally accompanied by the knee joint brace, it occupies a smaller space and greatly simplifies the structure.

On the other hand, the omnidirectional position described in this embodiment means the anterior part of the knee joint, and includes bone tissue such as the patella.

Therefore, when the subject's knee joint is bent and placed on the holding part 100, the kneecap is closely fixed to the holding part 100, so it is more excellent in fixing the position of the patella, which is a movable joint, and effectively restricts the movement of the entire knee joint. Therefore, it is possible to increase objectivity as data for accurate diagnosis by reducing noise in the radiographic image.

As shown in Figs. The center of the movable table 120 is installed to be movable up and down, and the center is foldable to form an inner angle to accommodate the knee joint portion with the inner angle portion, and both ends are attached to the fixing table 110 and the movable table 120, respectively. It is illustrated as including a cradle 130 connected and installed in a ball joint manner.

The cradle 130 has a '<' shape with a central portion protruding in a direction toward the radiation detector R1 to form an inner angle toward the rear, and the inner angle accommodates the knee joint.

The cradle 130 is configured so that the upper and lower parts can be folded in half based on the center, allowing the angle adjustment of the inner angle. The angle to be formed should be induced at 45°, and the interior angle may be set to an angle of approximately 90°, and this interior angle may be adjusted according to circumstances. A detailed structure for the control of the cabinet will be described later.

Again, the upper end of the cradle 130 may be connected to the movable base 120 and the lower end to the fixed base 110. In the case of the fixed base 110, the position is fixed on the movable frame 220, and the movable base ( 120) is configured to be able to move up and down in the movable frame 220, so when the movable table 120 is moved up and down, the upper end of the cradle 130 moves up and down in conjunction with this, and the cradle 130 The center of the folds or unfolds, and the inner angle of the cradle 130 can be adjusted. In addition, since both ends of the cradle 130 are connected to the fixed pedestal 110 and the movable pedestal 120 in a ball joint manner, a structure capable of flexibly accommodating the positional movement of both ends of the cradle 130 as the interior angle changes. will be equipped

The holder 110 may be integrally formed with the movable frame 220 or may be fixed to the outside, and a lower ball insertion port 111 connected to the lower end of the holder 130 may be recessed in the front.

Unlike the aforementioned fixing table 110, the movable table 120 may be guided up and down on the movable frame 220 and may be fixed at a specific height of the movable frame 220. At the same time, the upper end of the cradle 130 is towed so that the upper and lower ends of the cradle 130 move away from or come closer to each other, so that the inner angle of the cradle 130 can be adjusted.

To this end, the movable table 120 has a hollow movable bracket 121 accommodating the movable frame 220 therein and guide holes 221 of the movable bracket 121 and the movable frame 220 mutually. It is fastened through and illustrated as including a guide cylinder 122 in which the upper ball insertion port 122a is recessed in the front.

The movable bracket 121 has a structure surrounding the outside of the movable frame 220 and has a structure in which a through hole 121a through which a part of the guide cylinder 122 passes is formed on the front and rear surfaces.

When the movable bracket 121 is coupled to the outside of the movable frame 220, the passage hole 121a and the guide hole 221 can communicate with each other, and the guide cylinder 122 can be inserted into the communication point. .

The rear end of the guide cylinder 122 may be completely exposed to the rear of the movable bracket 121, and the inspector may move the movable table 120 up and down by gripping the exposed portion with his hand.

The upper ball insertion port 122a formed in front of the guide cylinder 122 is exposed to the front of the movable bracket 121 and is connected to the upper end of the holder 130, more specifically, the upper ball 131a to be described later.

On the other hand, the cradle 130 has an upper ball 131a connected to the upper ball inlet 122a at one end and an upper arm 131 to which the upper plate 132 is coupled to the other side, and the lower ball inlet 111 at one end. ) It is made of a structure including a lower ball (133a) connected to is formed and a lower arm 133 to which the lower plate 134 is coupled to the other side.

At this time, the upper arm 131 and the lower arm 133 are configured to connect the upper plate 132 and the lower plate 134 to the movable table 120 and the fixed table 110, respectively, and a pair of support frame parts 200 Corresponding to each may be made of a pair. Accordingly, the upper arm 131 is integrally connected to both left and right sides of the upper plate 132 and the lower arm 133 is integrally connected to both left and right sides of the lower plate 134, and the upper ball formed at one end of the upper arm 131. (131a) is formed in the upper ball insertion hole (122a) of the guide cylinder 122, and the lower ball (133a) formed at one end of the lower arm 133 is ball-jointed to the lower ball insertion hole 111 of the fixing table 110, respectively. can be connected

The upper plate 132 and the lower plate 134 are formed in a flat plate shape, and at this time, the upper plate 132 may support the subject's thigh and the lower plate 134 may support the lower leg, respectively.

One ends of the upper plate 132 and the lower plate 134 are formed in the form of free ends, and the other ends form a structure in which a hinge pin 135 is rotatably connected and installed.

An upper hinge 132a and a lower hinge 134a may be formed at the other ends of the upper plate 132 and the lower plate 134, respectively, and the hinge pin 135 is the upper hinge 132a and the lower hinge 134a ) By being mutually fastened to each other, the upper plate 132 and the lower plate 134 are provided with a structure that can be folded with each other with the hinge pin 135 as the center of rotation.

Although not shown, a protractor for measuring an interior angle between the upper plate 132 and the lower plate 134 may be provided between the upper plate 132 and the lower plate 134 .

The upper ball 131a and the lower ball 133a are formed in a spherical shape, and the upper ball insertion hole 122a and the lower ball insertion hole 111 to which the upper ball 131a and the lower ball 133a are respectively connected are (131a) and the lower ball (133a) is formed in a spherical shape and a complementary space so that it can be rolled.

Accordingly, as shown in FIG. 7 , when the angle change of the upper arm 131 and the lower arm 133 is accompanied by the vertical height adjustment of the movable table 120, the upper arm 131 and the lower arm 133 Each connection point where one end is connected, more specifically, the upper ball 131a is rolled in the upper ball insertion port 122a and the lower ball 133a is rolled in the lower ball insertion port 111, respectively, to form the upper arm 131 and the lower arm (133) has a structure that can accommodate the angle change elastically.

In summary, when the movable base 120 is moved upward to be separated from the fixed base 110, the upper plate 132 and the lower plate 134 are developed symmetrically with respect to the hinge pin 135, and the angle θ of the interior angle is increased, and on the contrary, when the movable table 120 is moved downward to be close to the fixed table 110, the upper plate 132 and the lower plate 134 are folded symmetrically with each other based on the hinge pin 135, and the interior angle The angle (θ) of becomes small.

On the other hand, the movable table 120 is freely movable in the vertical direction, but the position of the movable frame 220 must be restricted at a specific height so that the subject's knee joint can be more stably placed on the cradle 130 .

To this end, the guide cylinder 122 has the upper ball insertion port 122a formed in the front, is not inserted into the through hole 121a, and has a head 122b that is caught on the front surface of the movable bracket 121, the head In (122b), a body 122c extending through the passage hole 121a and the guide hole 221 and extending from the body 122c to the rear of the movable bracket 121 is exposed to the outside and has a screw thread on the outer circumferential surface. A nut member 122e having a flange 122g in contact with the rear surface of the movable bracket 121 may be fastened to the externally exposed screw handle 122d.

That is, the inspector grips the screw handle 122d exposed to the rear by hand to adjust the interior angle, moves the movable table 120 up and down to determine the angle θ of the interior angle, and determines the angle θ of the movable table 120 at a specific height ( When the nut member 122e is fastened to the screw handle 122d to fix the position of 120), the flange 122g of the nut member 122e is movable while the nut member 122e is fastened in the direction toward the head 122b. The back of the bracket 121 is strongly pressed.

At the same time, since the guide cylinder 122 itself is pulled toward the nut member 122e, the head 122b strongly presses the front surface of the movable bracket 121. That is, the head 122b and the nut member 122e press the movable bracket 121 in opposite directions, so that the movable table 120 can be more stably and firmly fixed on the movable frame 220. do.

On the other hand, the head 122b may be formed with an upper cutout 122f cut from the upper ball insertion port 122a toward the outer periphery.

The upper incision 122f is partially cut downward in the upper ball insertion port 122a to provide a space into which the upper arm 131 can be inserted.

When the movable table 120 is located relatively high, the separation distance between the movable table 120 and the fixed table 110 increases, and the interior angle θ between the upper arm 131 and the lower arm 133 is proportional to this. will increase In this case, as shown in the two-dotted chain line shown in FIG. 8, the slope of the upper arm 131 is formed steeply, so that one end of the upper arm 131 may interfere with the head 122b.

At this time, by inserting the upper arm 131 into the upper cutout 122f, it is possible to effectively prevent the upper arm 131 from interfering with the head 122b.

Similarly, a lower incision 112 cut from the lower ball insertion hole 111 toward the outer periphery may be formed in the fixing table 110 .

The lower incision 112 is partially incised upward in the lower ball insertion port 111 to provide a space into which the lower arm 133 can be inserted.

Since the operation effect of the lower incision 112 is the same as that of the above-described upper incision 122f, a detailed description thereof will be omitted.

In summary, the knee posture aid according to the present invention always uniformly and easily induces the degree of bending of the subject's knee joint without relying on the subject's will or the sense based on the examiner's experience, thereby providing a knee joint based on the Rosenberg method. It provides an optimal posture for general radiographic examination, and also ensures the convenience of examination by flexibly adjusting the degree of bending of the knee joint and the position where the knee joint is placed according to the subject's body shape, physical condition, and disease state. Furthermore, it is possible to obtain highly reliable images that can objectively diagnose knee arthrosis through accurate examination.

The embodiments of the present invention described above are merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, it will be well understood that the present invention is not limited to the forms mentioned in the detailed description above. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and alternatives within the spirit and scope of the present invention as defined by the appended claims.

100: mounting part
200: support frame part
110: fixture
120: movable table
130: cradle
210: fixed frame
220: movable frame
111: lower ball inlet
121: movable bracket
122: guide cylinder
221: guide hole

Claims (5)

In the knee posture aid for radiography for fixing and supporting the knee joint of a subject in a standing state between a radiation generator and a radiation detector at a predetermined angle,
A mounting portion in which the omnidirectional portion of the knee joint bent at a certain angle is mounted; and
Including; a support frame for supporting the mounting portion to be adjustable in height up and down,
The support frame part,
A fixed frame constituting the lower portion of the support frame;
a movable frame installed on the fixed frame to be movable in a vertical direction and having a guide hole formed in a vertical direction; and
It includes; a fixing member for fixing the position of the movable frame on the fixed frame;
The holding part,
a fixing table mounted on the outside of the lower part of the movable frame;
a movable stand connected to the guide hole and installed to be movable up and down along the longitudinal direction of the movable frame; and
A cradle that is foldable in the center to form an inner angle to accommodate the knee joint portion with the inner angle portion and has both ends connected to the fixed base and the movable base, respectively,
A lower ball insertion hole is recessed at the front of the fixing table,
The movable table,
A movable bracket made of a hollow shape for accommodating the movable frame inside; and
A knee posture aid for radiography, comprising: a guide cylinder fastened by mutually penetrating the guide holes of the movable bracket and the movable frame and having an upper ball inlet recessed at the front. delete delete delete The method of claim 1,
the cradle,
an upper arm having an upper ball connected to the upper ball insertion hole at one end and an upper plate coupled to the other side; and
A lower arm having a lower ball connected to the lower ball insertion hole at one end and a lower plate coupled to the other side;
The other end of the upper plate and the lower plate is a knee posture aid for radiography, characterized in that installed rotatably connected via a hinge pin.

Images