KR101877636B1 - Protractor measuring angle of bone for c-arm fluoroscopy - Google Patents

Abstract

The present invention provides an angular instrument for measuring a bone angle in a body using a C-type x-ray fluoroscope, comprising: a first face for transmitting radiation radiated in one direction from the C- And a second side; A horizontal adjustment unit installed to face the first and second surfaces in the one direction and to limit transmission of the radiation; A measuring member provided with a metal line for restricting the transmission of the radiation and rotatably installed on the first surface or the second surface and capable of measuring the trough angle in a state of being disposed at the trough; And a scale part which is provided on the first surface or the second surface and is made of a metal which restricts the transmission of the radiation and which is spaced apart from each other by a predetermined distance so as to display the measured angle, Characterized in that the bone angle is measured by adjusting the measuring member disposed in the bone captured by the radiation in a state in which the horizontal adjusters of the first and second faces are arranged side by side, And a protractor for measuring the bone angle for the X-ray fluoroscopic apparatus.

Description

{PROTRACTOR MEASURING ANGLE OF BONE FOR C-ARM FLUOROSCOPY}

The present invention relates to a protractor for measuring a bone angle for a C-type x-ray fluoroscopic apparatus for measuring a bone angle in the body using a C-type x-ray fluoroscopic apparatus.

During orthopedic surgery, orthodontic osteotomy is used in the correction of deformity or in various other operations, where angular measurement of the bone beneath the skin may be required. To view the bones that are not visible to the naked eye under the skin in the operating room, a C-arm fluoroscopy is used to take radiographs.

With this device, you can see the bone radiograph on the monitor. You can also measure the required angle through the screen. However, there is a case where the angle at which the osteotomy is practically performed and the like should be measured at the site to be directly operated.

On the other hand, a protractor can be placed on the skin above the bone requiring angle measurement, and the angle of the bone can be measured using a radiograph and a protractor using a C-type x-ray apparatus.

However, as shown in the left-side view of FIG. 1, there is a case where the protractor is obliquely placed with respect to the radiation transmission angle. In such a case, there is a problem that the angle measurement is distorted as shown in the right drawing of FIG.

It is an object of the present invention to provide a protractor capable of accurately measuring a bone angle in the body using a C-type x-ray fluoroscopic apparatus.

Another object of the present invention is to provide a protractor which can be placed vertically without being placed obliquely with respect to a radiation transmission angle.

In order to solve the above problems, the present invention provides a protractor for measuring a bone angle in a body using a C-type x-ray fluoroscope, wherein the protractor for measuring a bone angle for the C- A first side and a second side which are arranged to transmit radiation radiated in one direction from the apparatus and are spaced apart from each other; A horizontal adjustment unit installed to face the first and second surfaces in the one direction and to limit transmission of the radiation; A measuring member provided with a metal line for restricting the transmission of the radiation and rotatably installed on the first surface or the second surface and capable of measuring the trough angle in a state of being disposed at the trough; And a scale part which is provided on the first surface or the second surface and is made of a metal which restricts the transmission of the radiation and which is spaced apart from each other by a predetermined distance so as to display the measured angle, The bone angle is measured by adjusting the measuring member disposed in the bone captured by the radiation while the horizontal adjusters of the first and second faces are arranged in parallel with each other.

According to an embodiment of the present invention, two horizontal adjustment portions are provided on each of the first and second surfaces, two horizontal adjustment portions on the first and second surfaces are spaced apart from each other, And the two horizontal adjustment parts provided on the first surface and the second surface are arranged in parallel to each other.

According to another embodiment of the present invention, the protractor has a cylindrical shape as a whole, and the first surface and the second surface are each a two-sided cross section of a cylindrical shape, and the scale portion is formed at the edge of one end surface of the cylindrical shape do.

According to another embodiment of the present invention, the graduations may be spaced apart from each other by a predetermined distance. And an angular dimension displayed adjacent to the scale, wherein the scale and the angular dimension are made of a metal that limits the transmission of the radiation.

According to another embodiment of the present invention, a rotating shaft is provided on the first surface or the second surface, the measuring member rotates around the rotating shaft, one end of the metal wire is disposed on the rotating shaft, The measurement member is composed of two pieces, and the bone angle is measured by measuring the angle between the metal lines provided on each of the two measurement members.

According to another aspect of the present invention, there is provided a C-type x-ray inspecting apparatus comprising: a radiation generating unit for radiating radiation toward a bone in a body; A radiation detector for detecting radiation transmitted through the bone in the body to generate a projection image of the bone in the body; A display unit for externally displaying the projection image; And a protractor according to any one of claims 1 to 5, wherein the protractor is arranged adjacent to the bone in the body to measure the bone angle.

The present invention relates to a method and apparatus for measuring an angle at a certain position where a user can perform an osteotomy by placing a protractor having a graduation mark on a metal that does not transmit radiation, To be measured at the site to be measured.

In addition, the present invention can minimize the distortion of the bone angle measurement by the horizontal adjustment unit provided on the first and second surfaces, which do not transmit radiation in a certain shape in a state of being arranged in parallel to the direction of the radiation.

1 is a conceptual view showing a case where a protractor is placed at an angle to a radiation transmission angle;
FIG. 2 is a perspective view showing a C-type x-ray fluoroscope of the present invention. FIG.
3 is a perspective view showing an angular instrument for measuring a bone angle for a C-type x-ray fluoroscope of the present invention.
4 is a conceptual view showing a case where the protractor of the present invention is placed vertically with respect to a radiation transmission angle;
FIG. 5A is a conceptual diagram showing an example in which the leveling section is photographed by radiation when the protractor is placed obliquely with respect to the radiation transmission angle; FIG.
FIG. 5B is a conceptual diagram showing an example in which the level adjuster is photographed by radiation when the protractor is placed perpendicular to the radiation transmission angle. FIG.
FIG. 6 is a conceptual diagram showing an example of correcting a deformation by removing a part of a deformed valley; FIG.
FIG. 7A is a conceptual diagram showing an example in which the skin is cut and the osteotomy site is exposed. FIG.
FIG. 7B is a conceptual diagram showing an example in which a protruding portion is raised on a deformation portion to measure a valley angle. FIG.
FIG. 7C is a conceptual diagram showing an example of determining areas A, B, and C to be stitched.
FIG. 8A is a conceptual diagram showing an example in which K and L steel wires are inserted into a valley at a certain angle. FIG.
FIG. 8B is a conceptual diagram showing an example in which a part of deformed bone is removed to correct the deformation. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or similar elements are denoted by the same or similar reference numerals, and a duplicate description thereof will be omitted. The suffix "part" for the constituent elements used in the following description is to be given or mixed with consideration only for ease of specification, and does not have a meaning or role that distinguishes itself. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

The C-type x-ray apparatus 1000 includes a radiation generating unit 200, a radiation detector 300, a display unit 400 and a protractor 100 for measuring a bone angle for a C-type x-ray apparatus.

The radiation generating unit 200 irradiates the radiation toward the bone in the body. The radiation generating unit 200 can generate radiation to irradiate the radiation generated toward the bone in the body.

The radiation detector 300 is positioned on the opposite side of the radiation generating unit 200 with respect to the bone in the body, and can acquire a perspective image of the bone in the body through the radiation transmitted through the bone in the body. The end of the radiation detector 300 facing the radiation generating unit 200 may be provided with a sensor for sensing the radiation transmitted through the bone in the body.

The display unit 400 displays the projection image to the outside.

FIG. 2 shows an example of a C-type x-ray fluoroscopy apparatus 1000 according to the present invention. As shown in FIG. 2, the radiation generating unit 200 on the upper right side of the C- An example in which radiation is irradiated toward the radiation detector 300 is shown. In addition, the radiation generating unit 200 and the radiation detector 300 are coupled through a C-arm 600. The C-arm 600 and the display unit 400 are connected to the main body 500 of the C-type x-ray apparatus 1000, respectively.

The angled instrument 100 for measuring the bone angle for the in-vivo C-type x-ray apparatus 1000 of the present invention includes a first surface 10, a second surface 20, a horizontal adjustment portion 30, a measurement member 40, And a scale part 50. [

The first surface 10 and the second surface 20 are configured to transmit radiation radiated in one direction from the C-type x-ray apparatus 1000, but are spaced apart from each other.

For example, the protractor 100 for measuring the bone angle for the C-type x-ray apparatus 1000 of the present invention may have a generally cylindrical shape, and the first surface 10 and the second surface 20 may be It may be a cross section of the cylinder. 3, the first surface 10 is the upper surface of the protractor 100 for measuring the tilt angle for the C-type x-ray apparatus 1000, and the second surface 20 is the upper surface of the trough for the C- And may be the underside of the protractor 100 measuring the angle.

The first surface 10 and the second surface 20 are provided with a horizontal adjustment portion 30 and the measurement surface 40 and the scale portion 50 Is installed.

The horizontal adjustment portion 30 is provided so as to face each other in the direction in which the radiation is irradiated on the first surface 10 and the second surface 20, respectively. Each of the horizontal adjustment portions 30 is made of a metal material which restricts the transmission of radiation.

Referring to FIG. 3, the horizontal adjustment unit 30 may be installed on the first surface 10 and the second surface 20 so as to be spaced apart from each other. The horizontal adjustment portion 30 of the first surface 10 and the second surface 20 should be arranged so as to be disposed at a position facing exactly in the direction in which the radiation is irradiated. When the first surface 10 and the second surface 20 are both cylindrical in shape, the horizontal adjustment portion 30 corresponding to face the first surface 10 and the second surface 20 has a first surface 10 10 and the second side 20 of the first and second sides.

For example, in FIG. 3, the distance between the circular horizontal adjustment portion 32a and the star-shaped horizontal adjustment portion 34a on the first surface 10 and the distance between the circular horizontal adjustment portion 32b And the star-shaped horizontal adjustment portions 34b must be the same and the circular horizontal adjustment portions 32a and 32b and the star-shaped horizontal adjustment portions 34a and 34b in the first surface 10 and the second surface 20, respectively, 34b should be spaced the same distance from their original edges.

This allows the horizontal adjustment portion 30 to be accurately superimposed on each of the first surface 10 and the second surface 20 in the direction in which the radiation is irradiated and can be adjusted so that the shade is photographed, Likewise, the protractor 100 for measuring the bone angle for the C-type x-ray apparatus 1000 is disposed perpendicular to the direction in which the radiation is emitted.

5A shows an example in which the photographed shade is not superimposed when the protractor 100 for measuring the tilt angle for the C-type x-ray apparatus 1000 is inclined at a predetermined angle with respect to the irradiation direction of the radiation. There is shown an example in which the photographed shade is superimposed when the protractor 100 for measuring the bone angle for the C-type x-ray apparatus 1000 is disposed perpendicular to the irradiation direction of the radiation.

Referring again to FIG. 3, it is preferable that the leveling portions 30 are formed to a sufficient size so that it is clearly seen that the leveling portions 30 are superimposed on each other with the radiation being vertically disposed.

FIG. 3 shows an example of a circular shape and a star shape. However, the present invention is not limited thereto.

The measuring member 40 is rotatably installed on the first surface 10 or the second surface 20 and allows the measurement of the trough angle at a predetermined distance from the trough position. The measuring member 40 also has a metal wire, which is a thin linear metal that limits the transmission of radiation.

For example, the measuring member 40 may be mounted on the first surface 10 or the second surface 20 through the rotating shaft 23, wherein the first surface 10 or the second surface 20 is cylindrical The rotary shaft 23 may be formed at the center of the first surface 10 or the second surface 20. [

The measuring member 40 may be composed of two members, in which case the measuring member 40 may include first and second measuring portions 41 and 43. The angle between the metal lines 41a and 43a provided in the first and second measurement units 41 and 43 is measured to measure the bone angle.

Using the measuring member 40 described above, the measurement of the angle between the metal lines can be performed in such a manner that an image of the angle between the metal lines disposed according to the angle of the bone is photographed by the radiation on the display of the C- .

Although not shown in the drawings, the measuring member 40 may be formed of a single member, and may include a reference line 25 provided on the first surface 10 or the second surface 20, The angle between the metal line provided on the reference line 25 and the measurement member 40 made of one member is measured after the measurement member 40 composed of the four members is positioned on the bone within the body, do. The reference line 25 is a line disposed between the point on the first surface 10 or on the second surface 20 that indicates 0 ° and the point that indicates 180 ° and is made of a metal that does not transmit radiation.

The graduation portions 50 are installed on the first surface 10 or the second surface 20 and are spaced apart from each other by a predetermined distance so as to display the measured angle. The scale portion 50 is made of metal that limits the transmission of radiation. When the protractor 100 for measuring the bone angle for the C-type X-ray apparatus 1000 has a cylindrical shape as a whole, the scale part 50 is formed at the edge of the first surface 10 or the second surface 20 .

The scale portion 50 may include a scale 52 and an angular dimension 56. The graduations 52 may be spaced apart from each other by a predetermined distance so that when the first face 10 and the second face 20 are both cylindrical cross-sections, the first face 10 or the second face 20 And may be formed to be spaced from the edge in the direction of the arcs. The angular dimension 56 is indicative of the dimension of the angle adjacent to the scale 52. For example, the angular dimension 56 is a number between 0 and 360 degrees, and the scale 52 is spaced at equal intervals between 0 and 360 degrees. The scale 52 and the angular dimension 56 are made of a metal that limits the transmission of radiation, so that the scale and the angular dimension are photographed by the radiation so that the angle between the measurement members can be read.

Hereinafter, an example of correcting the deformation of the bone using the protractor will be described with reference to Figs. 6 to 8B.

As shown in FIG. 6, the central axis of the deformed bone is defined as the x-axis and the y-axis, and the deformed angle is referred to as an angle. At this time, it is possible to correct the deformation by osteotomizing the bone at an angle of? Deformation α angle using x and y axis can be measured in radiographs before surgery. However, it is difficult to determine the areas A and B, which are required to be osteotomized, in the operation field.

Referring to FIG. 7A, at the time of surgery, the skin of the site to be osteotomized is cut to expose the surgical site. Thereafter, referring to FIG. 7B, in order to measure the deformation angle, the protractor is horizontally placed on the deformation area, and the angle is measured using the C-type x-ray apparatus. Referring to FIG. 7C, the protractor can be measured after being adjusted by hand and viewing the X-ray picture through the C-type X-ray fluoroscope and aligning with the axis. After measuring the angles of deflection α, adjust the angler by α angle and place it horizontally on the deformed area again. If you use the C-type X-ray fluoroscope, the areas A, B and C are determined. The X-ray is taken through the C-type X-ray fluoroscopy device, the medical wire K is inserted into the bone from A to C, and the L-wire is inserted from B to C.

FIG. 8A shows a process in which the K and L steel wires are inserted at angles .alpha. From each other when the protractor is removed, and the bone is cut using a medical top using the K, L steel wire as a guide. FIG. After removal, the process of correcting the deformation is shown if A and B meet.

With the C-type X-ray fluoroscopy device, it is possible to measure the angle of the bone without the protractor on the monitor through the image taken at the operation field. However, as shown in the above example, it is difficult to determine the direct osteotomy sites A, B and C. However, when the protractor of the present invention is used, it is possible to directly determine and measure the osteotomy site.

It is to be understood that the protractor 100 for measuring the bone angle for the C-type x-ray apparatus 1000 described above is not limited to the configuration and the method of the embodiments described above, All or some of them may be selectively combined.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

10: first side
20: second side
23:
30:
40: measurement member
41: first measuring unit
41a: metal wire
43: second measuring unit
43a: metal wire
50: graduation
52: graduation
56: Angular dimension

Claims (6)

A protractor for measuring a bone angle in a body using a C-type x-ray fluoroscope,
A first surface and a second surface which are configured to transmit radiation radiated in one direction from the C-type x-ray apparatus and are spaced apart from each other;
A horizontal adjustment unit installed to face the first and second surfaces in the one direction and to limit transmission of the radiation;
A reference line disposed between a point indicating 0 ° and a point indicating 180 ° on either the first surface or the second surface;
A measuring member provided with a metal line for restricting the transmission of the radiation and rotatably installed on the first surface or the second surface and capable of measuring the trough angle in a state of being disposed at the trough; And
And a scale portion which is provided on the first surface or the second surface and is spaced apart from each other by a predetermined distance so as to display the measured angle,
The bone angle is measured by adjusting the measuring member disposed on the bone photographed by the radiation in a state in which the one direction radiation and the horizontal adjustment portions of the first and second surfaces are arranged side by side, ,
Wherein the horizontal adjustment unit is disposed to face the first and second surfaces in the one direction, and the projection images of the radiation are arranged so as to overlap one another and in parallel to the irradiation direction of the radiation,
Wherein the protractor has a cylindrical shape as a whole, the first surface and the second surface each have a cylindrical cross section,
The scale portion is formed at the edge of one end face of the cylindrical shape,
A scale that is spaced apart from each other by a predetermined distance; And
And an angular dimension displayed adjacent to the scale,
The scale and the angular dimension are made of a metal that limits the transmission of the radiation,
Wherein the rotation axis is provided on the first surface or the second surface, the measurement member rotates about the rotation axis, one end of the metal line is disposed on the rotation axis,
Wherein the measuring member is composed of first and second measuring units for measuring a deformation angle of a bone, and by measuring a deformation angle of a bone between metal lines provided on each of the first and second measuring units, And the two medical wires are inserted into the bone, respectively, and the deformation of the bone is corrected by osteotomizing the bone using the medical wire as a guide. A protractor for measuring the angle of the bone for a C-type x-ray device.
delete delete delete delete A radiation generating unit for irradiating radiation toward a bone in the body;
A radiation detector for detecting radiation transmitted through the bone in the body to generate a projection image of the bone in the body;
A display unit for externally displaying the projection image; And
The C-type x-ray inspecting apparatus according to claim 1, wherein the protractor is disposed adjacent to the bone in the body to measure the bone angle.

Images