CN111035402B - Spinal coronal balance assessment device - Google Patents
Spinal coronal balance assessment device Download PDFInfo
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- CN111035402B CN111035402B CN201911226238.5A CN201911226238A CN111035402B CN 111035402 B CN111035402 B CN 111035402B CN 201911226238 A CN201911226238 A CN 201911226238A CN 111035402 B CN111035402 B CN 111035402B
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/505—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of bone
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0492—Positioning of patients; Tiltable beds or the like using markers or indicia for aiding patient positioning
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Abstract
The invention provides a spine coronal plane balance evaluation device which comprises a reference rod, two positioning rods and a measuring unit, wherein the measuring unit is used for measuring the distance between the reference rod and a C7 vertebral body spinous process, one ends of the two positioning rods are hinged to the reference rod at the same hinge point and form a positioning included angle, the other ends of the two positioning rods are arranged at the back of a human body and correspond to the upper edge points of the two iliac spines respectively, and the reference rod coincides with the angular bisector of the positioning included angle, so that the reference rod coincides with the perpendicular bisector of the connecting line of the upper edge points of the two iliac spines of the human body, and the connecting line of the upper edge points of the two iliac spines of the human body is the anterior superior iliac spine connecting line.
Description
Technical Field
The invention belongs to the field of medical appliances, and particularly relates to a device for evaluating balance of a spinal coronal plane.
Background
Scoliosis is also known as scoliosis, a three-dimensional deformity of the spine, and includes sequential abnormalities in the coronal, sagittal, and axial positions.
Scoliosis deformities are particularly marked by deviations of the spine in the coronal position, mild scoliosis can be observed, and severe patients need surgical treatment. Scoliosis deformity is a common disease endangering teenagers and children, and is critical to early discovery and early treatment. With the improvement of the operation level, more and more idiopathic scoliosis deformity patients are fixed and treated through posterior pedicle screw fixation and osteotomy orthopedic bone grafting fusion, with the development of the instrument, the operation orthopedic effect is gradually better, but the incidence of the scoliosis deformity is still higher, and the scoliosis deformity can influence the survival quality of the patients to a certain extent. In specific practice, the balance of the coronal plane of the spine is often used for judging scoliosis deformity, and particularly when the distance between the perpendicular bisector of the anterior superior iliac spine connecting line and the spinous process of the C7 vertebral body is more than 20mm, the coronal plane of the spine is judged to be unbalanced, namely scoliosis deformity occurs. Thus, evaluating the state of equilibrium of the coronal plane of the spine can determine whether a scoliosis deformity has occurred.
Heretofore, a method of using a medical instrument for evaluating the balance state of the coronal plane of a spinal column has been conventionally applied in which a doctor positions the perpendicular bisector of the anterior superior iliac spine line by touching the back surface of an evaluated person based on experience and uses the perpendicular bisector as a reference line, and measures the distance between the perpendicular bisector of the anterior superior iliac spine line and the spinous process of the C7 vertebral body. However, the method has the following defects that 1. The stability is poor, and a datum line frequently found in the using process is not coincident with a perpendicular bisector of the anterior superior iliac spine connecting line, so that the measuring datum is lost. 2. The instrument is free of any measuring device, so that when the distance is measured, the distance is required to be indirectly measured, and measurement errors are inevitably caused.
Disclosure of Invention
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an evaluation device capable of effectively evaluating the balance state of the coronal plane of the spinal column.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The invention provides a spine coronal plane balance evaluation device which is characterized by comprising a positioning unit, a reference rod and a measuring unit, wherein the positioning unit is used for positioning the upper edge points of two iliac spines of a human body, the reference rod is arranged on the positioning unit, the measuring unit is used for measuring the distance between the reference rod and the spinous processes of a C7 vertebral body, the positioning unit comprises two positioning rods, one ends of the two positioning rods are hinged to the same hinging point with the reference rod, the other ends of the two positioning rods are arranged on the back of the human body and are respectively overlapped with the upper edge points of the two iliac spines, an included angle formed by the two positioning rods is used as a positioning included angle, and the reference rod is overlapped with an angle bisector of the positioning included angle, so that the reference rod is overlapped with a perpendicular bisector of a connecting line of the upper edge points of the two iliac spines of the human body.
The spine coronal plane balance evaluation device provided by the invention can be further characterized in that the positioning unit further comprises a moving block and two supporting rods, wherein the moving block is movably arranged on the reference rod so as to be capable of moving along the length direction of the reference rod, two ends of the supporting rods are correspondingly hinged on the positioning rod and the moving block respectively, the hinge point of the positioning rod and the reference rod is used as a first hinge point, the hinge point of the supporting rods and the positioning rod is used as a second hinge point, the distance between the first hinge point and the second hinge point is used as a hinge distance, and the two hinge distances are the same, so that the angular bisectors of the reference rod and the positioning included angle always coincide in the moving process of the moving block.
The device for evaluating the balance of the coronal plane of the spinal column can be characterized in that the positioning unit further comprises two positioning plate mounting pieces and two positioning plates, the positioning plate mounting pieces and the positioning plates are arranged corresponding to the positioning rods, the positioning plate mounting pieces are detachably arranged at the other ends of the positioning rods and are provided with a plurality of mounting teeth, the positioning plates are provided with a plurality of positioning holes, and the mounting teeth are inserted into the positioning holes.
The device for evaluating the balance of the coronal plane of the spine provided by the invention can be further characterized in that a plurality of positioning holes are arranged in a matrix.
The device for evaluating the balance of the coronal plane of the spine provided by the invention can be characterized by further comprising a fixing unit, wherein the fixing unit comprises two connecting rods and a fixing assembly, the two connecting rods are correspondingly arranged on the positioning plate, the fixing assembly is arranged on the two connecting rods, the fixing assembly comprises a telescopic rod and a spinous process clamp, the telescopic rod is vertically arranged on the spinous process clamp, and the telescopic rod can be telescopic along the vertical direction.
The device for evaluating the balance of the coronal plane of the spine provided by the invention can also be characterized in that the fixing component also comprises a universal disk and two connecting blocks, wherein the universal disk is arranged at the upper end of the telescopic rod and is provided with an arc-shaped guide rail, the two connecting blocks are correspondingly sleeved outside the two connecting rods,
The connecting block is matched with the arc guide rail, and can move in an arc mode along the arc guide rail.
The apparatus for evaluating the balance of a coronal plane of a spinal column according to the present invention may be characterized in that the measuring unit includes a measuring ruler, and the measuring ruler is vertically arranged in a longitudinal direction of the reference rod and is movably attached to the reference rod so as to be movable in the longitudinal direction of the reference rod.
The device for evaluating the balance of the coronal plane of the spine can be further characterized in that the measuring ruler is provided with a scale mark part and other parts, wherein the scale mark part is made of an X-ray impermeable material, and the other parts are made of an X-ray permeable material.
In the apparatus for evaluating the balance of a coronal plane of a spinal column provided by the present invention, it may be further characterized in that "0" of the scale mark portion is located at a position corresponding to the reference rod.
Effects and effects of the invention
The spine coronal plane balance evaluation device comprises a reference rod, two positioning rods and a measuring unit, wherein the measuring unit is used for measuring the distance between the reference rod and a C7 vertebral body spinous process, one ends of the two positioning rods are hinged to the reference rod at the same hinge point and form a positioning included angle, the other ends of the two positioning rods are arranged on the back of a human body and correspond to the upper edge points of the two iliac spines respectively, and the reference rod coincides with the angular bisector of the positioning included angle, so that the reference rod coincides with the perpendicular bisector of the connecting line of the upper edge points of the two iliac spines of the human body, and the connecting line of the upper edge points of the two iliac spines of the human body is the anterior superior iliac spine connecting line.
Drawings
FIG. 1 is a schematic perspective view of a device for evaluating the balance of the coronal plane of a spinal column in an embodiment of the invention;
FIG. 2 is a schematic perspective view of a device for evaluating the balance of the coronal plane of a spinal column in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of a locating unit and reference rod of a spinal coronal plane balance assessment device in an embodiment of the invention;
FIG. 4 is a schematic illustration of the connection of a locating stem and locating plate mount of a spinal coronal plane balance assessment device in an embodiment of the invention;
FIG. 5 is a schematic illustration of the attachment of a locating plate mount and a locating plate of a spinal coronal plane balance assessment device in an embodiment of the invention;
FIG. 6 is a schematic view of a locating plate of a spinal coronal plane balance assessment device in an embodiment of the invention;
FIG. 7 is a schematic view of the installation of the connecting rods and locating plates of the spinal coronal plane balance assessment device in an embodiment of the invention;
FIG. 8 is a schematic view of the installation of a fixation assembly of a spinal coronal plane balance assessment device in an embodiment of the invention;
FIG. 9 is a schematic diagram of the connection of the gimbal plate, the connection block, and the locating plate of the spinal coronal plane balance assessment device in an embodiment of the invention;
FIG. 10 is a schematic view of the installation of a measurement unit and a reference bar in an embodiment of the invention;
FIG. 11 is a schematic view of the installation of a fixation assembly of a spinal coronal plane balance assessment device in an embodiment of the invention;
FIG. 12 is a schematic view of the positioning plate of the spinal coronal plane balance assessment device in an embodiment of the invention;
FIG. 13 is a schematic top view of an installation process of a spinal coronal plane balance assessment device in an embodiment of the invention;
FIG. 14 is a perspective view of an installation process of a spinal coronal plane balance assessment device in an embodiment of the invention;
FIG. 15 is a schematic side view of a measuring process of a spinal column coronal plane balance assessment device in an embodiment of the invention
Fig. 16 is a second schematic side view of the measuring process of the device for evaluating the balance of the coronal plane of the spinal column in the embodiment of the invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purposes and the effects of the present invention easy to understand, the following embodiments specifically describe the device for evaluating the balance of the coronal plane of a spinal column according to the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic perspective view of a first device for evaluating the balance of a coronal plane of a spinal column according to an embodiment of the present invention, and fig. 2 is a schematic perspective view of a second device for evaluating the balance of a coronal plane of a spinal column according to an embodiment of the present invention.
As shown in fig. 1 and 2, the device 100 for evaluating the balance of the coronal plane of a spine in the present embodiment is used for measuring the distance between the perpendicular bisector of the line connecting the upper edge points of two iliac spines of a human body and the spinous process of the C7 vertebral body, and comprises a positioning unit 10, a reference rod 20, a fixing unit 30 and a measuring unit 40.
Fig. 3 is a schematic view of a locating unit and a reference rod of a spinal coronal plane balance assessment device in an embodiment of the invention.
As shown in fig. 1 to 3, the positioning unit 10 is used for positioning the upper edge points of two iliac spines of a human body, and comprises a moving block 11, two support rods 12, two positioning rods 13, two positioning plate mounting pieces 14 and two positioning plates 15.
The two locating rods 13 are identical in length, are respectively located on two sides of the datum rod 20, one end of each locating rod is hinged to the datum rod 20 at the same hinge point, the other end of each locating rod is arranged on the back of a human body and corresponds to the upper edge points of the two iliac spines, an included angle formed by the two locating rods 13 is used as a locating included angle, the datum rod 20 coincides with an angular bisector of the locating included angle, and based on the three-in-one principle of an isosceles triangle, the datum rod 20 coincides with a perpendicular bisector of a connecting line of the upper edge points of the two iliac spines of the human body, namely coincides with the perpendicular bisector of a connecting line of the front upper iliac spines. In this embodiment, both positioning bars 13 are located in a first plane P, and the reference bar 20 is parallel to the first plane P.
The moving block 11 is movably mounted on the reference rod 20, specifically, is sleeved on the reference rod 20, and can move along the length direction of the reference rod 20. In the present embodiment, the moving block 11 has an "L" shape, the height direction of the moving block 11 is perpendicular to the reference lever 20, and the volumes of the moving block 11 located on the left and right sides of the reference lever 20 are equal.
Both ends of the two support rods 12 are respectively hinged on the positioning rod 13 and the moving block 11 correspondingly, the hinge point of the positioning rod 13 and the reference rod 20 is used as a first hinge point I1, the hinge point of the support rod 12 and the positioning rod 13 is used as a second hinge point I2, the distance between the first hinge point I1 and the second hinge point I2 is used as a hinge distance, and the two hinge distances are the same, so that in the moving process of the moving block 11, the other ends of the two positioning rods 13, namely the free ends of the positioning rods 13, can be mutually unfolded or folded, and the angle bisectors of the reference rod 20 and the positioning included angles are always coincident. In the present embodiment, the two support rods 12 are located on the first plane P, the vertical distances from the two hinge points of the two support rods 12 on the moving block 11 to the reference rod 20 are the same, when the moving block 11 moves rightward along the length direction of the reference rod 20 (direction a shown in fig. 3), the other ends of the two positioning rods 13 are spread apart from each other (direction B and direction C shown in fig. 3), and when the moving block 11 moves leftward along the length direction of the reference rod 20 (direction opposite to direction a shown in fig. 3), the other ends of the two positioning rods 13 are retracted toward each other (direction opposite to direction B and direction C shown in fig. 3).
FIG. 4 is a schematic illustration of the connection of the locating rods and locating plate mounts of the spinal coronal plane balance assessment device in an embodiment of the invention.
The two positioning plate mounting members 14 are respectively and correspondingly arranged at the other ends of the two positioning rods 13, namely, at the free ends of the positioning rods 13.
The positioning plate mounting member 14 is detachably mounted at the other end of the positioning rod 13, and one end surface of the positioning plate mounting member 14 remote from the positioning rod 13 has a plurality of mounting teeth 141. In this embodiment, the plane where one end face of the positioning plate mounting member 14 is far away from the positioning rod 13 is parallel to the first plane P, and is a right circular surface, the line connecting the center of the right circular surface with the other end of the positioning rod 13 is perpendicular to the right circular surface, the connection point of the positioning rod 13 and the positioning plate mounting member 14 corresponds to the center of the right circular surface, and the positioning plate mounting member 14 is mounted on the positioning rod 13 through a rotating bearing, so that the end face with the mounting teeth 141 can rotate with the center of the end face as the center of rotation.
The plurality of mounting teeth 141 are vertically mounted on the end surface of the positioning plate mounting member 14 and are uniformly distributed. In the present embodiment, the number of the mounting teeth 141 is 4, and are uniformly provided at the edge of the end face in the circumferential direction of the end face of the positioning plate mount 14. The mounting teeth 141 are divided into a tooth root 1411 and a tooth tip 1412 from a fixed end to a free end of the mounting teeth 141 in a height direction, the tooth tip 1412 is two wedge-shaped elastic pieces extending toward a length direction of the mounting teeth 141, an elastic deformation direction faces an axis of an end face of the positioning plate mounting member 14, an elastic recovery direction is a reverse direction of the elastic deformation direction, a locking groove 1413 is formed in a surface of the tooth tip 1412 facing the outside of the positioning plate mounting member 14 at a joint of the tooth tip 1412 and the tooth root 1411, and the locking groove 1413 is a straight groove perpendicular to the length direction of the mounting teeth 141.
Fig. 5 is a schematic diagram showing connection of a positioning plate mount and a positioning plate of a device for evaluating the balance of a coronal plane of a spinal column in an embodiment of the invention, and fig. 6 is a schematic diagram showing the positioning plate of the device for evaluating the balance of a coronal plane of a spinal column in an embodiment of the invention.
Both positioning plates 15 are provided corresponding to the positioning plate mounting member 14 and the positioning rod 13, and have a plurality of positioning holes 151. In this embodiment, the positioning plate 15 is made of a material that is opaque to X-rays, the positioning plate 15 is detachably mounted on the positioning plate mounting member 14, and the thickness of the positioning plate 15 is matched with the locking groove 1413 of the tooth tip 1412.
The plurality of positioning holes 151 are through holes and are arranged in a matrix, and the mounting teeth 141 are inserted into and mounted in the positioning holes 151. In this embodiment, the positioning holes 151 are square through holes, and the number of the square through holes is 289, and form a square matrix of 17 rows and 17 columns. Marks (shown as "a" to "K" and "1" to "9" in fig. 6) are provided for positioning of rows and columns near two adjacent sides of the square matrix, and the marks are hollowed out on the positioning plate 15.
The length or width of the positioning hole 151 is matched with the width of the elastic piece of the tooth tip 1412, and the mounting tooth 141 can be inserted and mounted in the positioning hole 151 through the elastic piece. In this embodiment, the specific process of installation is to apply an external force to the mounting teeth 141, fold the 4 mounting teeth 141 to elastically deform the 4 mounting teeth 141, make the elastic sheet start to enter the positioning hole 151, then remove the external force, continuously push the positioning plate mounting member 14 toward the positioning plate 15 along the thickness direction of the positioning plate 15 until the positioning plate 15 slides into the locking groove 1413 of the tooth tip 1412, and the locking groove 1413 fixes the positioning plate 15 on the positioning plate mounting member 14. When an external force is applied to the 4 mounting teeth 141 at this time, the 4 mounting teeth 141 are folded to elastically deform the 4 mounting teeth 141, and the positioning plate 15 can be removed from the positioning plate mounting member 14.
The reference bar 20 is provided on the positioning unit 10, and in this embodiment, the reference bar 20 is a rigid elongated bar.
Fig. 7 is a schematic view of a fixing assembly of a device for assessing the balance of a coronal plane of a spinal column in an embodiment of the present invention, fig. 8 is a schematic view of an installation of a fixing assembly of a device for assessing the balance of a coronal plane of a spinal column in an embodiment of the present invention, and fig. 9 is a schematic view of a connection of a gimbal plate, a connection block, and a positioning plate of a device for assessing the balance of a coronal plane of a spinal column in an embodiment of the present invention.
As shown in fig. 1, 2 and 7 to 9, the fixing unit 30 includes two connection rods 31 and a fixing assembly 32.
Two connecting rods 31 are correspondingly installed on the locating plate 15, in this embodiment, one end of each connecting rod 31 is rotatably installed on the locating plate 15 through a first butterfly screw L2 and a connecting clamp L1, so that the locating plate 15 can rotate by taking the first butterfly screw L2 as a rotation center and can be fixed through the first butterfly screw L2. The connecting clip L1 is sleeved on the connecting rod 31, so that the connecting clip L1 can move along the length direction of the connecting rod 31 and be fixed by the second butterfly screw L3.
The fixing assembly 32 is mounted on the other ends of the two connection rods 31, and includes a telescopic rod 321, a spinous process clamp 322, a universal disk 323, and a connection block 324.
The number of the connecting blocks 324 is 2, and the connecting blocks are arranged corresponding to the connecting rods 31, sleeved outside the connecting rods 31, and accordingly can move along the length direction of the connecting rods 31, and in the embodiment, the connecting blocks 324 can move along the length direction of the connecting rods 31 and are fixed through the third butterfly screws L4.
Be provided with arc guide rail 3231 on the universal dish 323, connecting block 324 cooperatees with arc guide rail 3231, can follow the length direction of arc guide rail and carry out the arc and remove, in this embodiment, arc guide rail 3231 is the arc of fretwork, the one end of connecting block 324 is with arc guide rail 3231 matched with shaft-like (not marked in the figure), passes arc guide rail 3231 with shaft-like tip to the mounting is greater than the locating part of fretwork area and carries out spacingly at the shaft-like tip that wears out, thereby makes connecting block 324 can carry out the arc and remove along the length direction of arc guide rail 3231.
The upper end of the telescopic rod 321 is vertically installed on the lower end face of the universal disk 323, and can stretch and retract along the vertical direction, and in this embodiment, the telescopic rod 321 is a two-section type nested telescopic rod.
The spinous process clamp 322 is installed at the lower extreme of telescopic link 321, have opening pole 322A, arm lock 322B and fourth butterfly screw L5, telescopic link 321 can adjust locating plate 15 to the vertical distance of spinous process clamp 322, in this embodiment, two arm lock 322B of spinous process clamp 322 are connected through the connecting rod structure with opening pole 322A, opening pole 322A constitutes screw nut mechanism with fourth butterfly screw L5, when fourth butterfly screw L5 rotates in clockwise (like direction D of FIG. 7), will drive opening pole 322A and move along vertical decurrent (like direction E of FIG. 7), thereby make two arm lock 322B open, when fourth butterfly screw L5 rotates along anticlockwise (like direction D of FIG. 7) the opposite direction, will drive opening pole 322A and move along vertical upward direction (like direction E of FIG. 7) so that two arm lock 322B press from both sides tightly.
Fig. 10 is a schematic view of the installation of the measuring unit and the reference lever in the embodiment of the present invention.
As shown in fig. 10, the measuring unit 40 is used for measuring the distance between the reference rod 20 and the spinous process of the C7 vertebral body, and includes a measuring ruler 41.
The measuring straight scale 41 has a length direction perpendicular to the reference bar 20 and is movably mounted on the reference bar 20 so as to be movable in the length direction of the reference bar 20, and has a scale line portion 411 and other portions 412, and in this embodiment, the measuring straight scale 41 is movably mounted on the reference bar 20 by a saddle clamp with the reference bar 20 being located in the middle of the measuring straight scale 41. The saddle clamp is made of X-ray penetrable material.
The scale line portion 411 is made of an X-ray impermeable material, in this embodiment, the scale line portion 411 is scale lines uniformly distributed along the length direction of the measuring straight scale 41, and "0" of the scale line portion is located at a position corresponding to the reference rod 20.
The other portion 412 is made of an X-ray transparent material, and in this embodiment, the other portion 412 is a portion other than the scale line portion 411 on the measuring straight scale 41.
The working procedure of the spinal column coronal plane balance assessment device 100 in the present embodiment includes an installation procedure and a measurement procedure:
Fig. 11 is a schematic view showing the installation of a fixing assembly of a device for assessing the balance of a coronal plane of a spinal column in an embodiment of the present invention, fig. 12 is a schematic view showing the positioning of a positioning plate of a device for assessing the balance of a coronal plane of a spinal column in an embodiment of the present invention, fig. 13 is a schematic view showing the installation process of a device for assessing the balance of a coronal plane of a spinal column in an embodiment of the present invention, and fig. 14 is a schematic view showing the installation process of a device for assessing the balance of a coronal plane of a spinal column in an embodiment of the present invention.
The following describes the mounting process of the ridge cap balance evaluation device 100 in the present embodiment with reference to fig. 11 to 14:
First, the subject maintains a prone state, any spine of the subject is exposed through the surgical incision, as a fixed spine F, the spinous process of the fixed spine F is used as a fixed spinous process F1, the fixed spinous process F1 is clamped using the spinous process clamp 322, the telescopic rod 321 is vertically arranged, and the length of the telescopic rod 321 is adjusted, so that the connection block 324 is located at a height with the back of the subject. Then, one ends of the two connecting rods 31 are respectively inserted and installed in the connecting blocks 324 correspondingly, the positioning plates 15 are installed at the other ends of the two connecting rods 31, the positions of the positioning plates 15 are adjusted for the first time, so that the two positioning plates 15 are located right above the positions of the backs corresponding to the two iliac spines of the evaluated person and are parallel to the backs, after the completion, the connecting blocks 324 and the connecting clamps L1 are fixed on the connecting rods 31 through the second butterfly screws L3 and the third butterfly screws L4, the positions of the connecting blocks 324 in the arc-shaped guide rails 3231 are fixed, then, the plate surface of the positioning plates 15 is perpendicularly and directly irradiated by an X-ray machine, X-rays penetrate through the positioning holes 151 and the marks on the positioning plates 15, X-ray perspective images are observed, the positioning holes 151 and the marks of the positioning plates 15 can be seen through, the rest parts are all shown as shadows, the positions of the positioning plates are adjusted for the second time, so that the upper edge points of the two iliac spines are respectively located in the shadow of the center of the matrix formed by the 4 positioning holes 151, and the center of the matrix is taken as the upper edge of the positioning points of the iliac spine. The upper edge points of the iliac crest are located in the column marked "D", the row intervals of the positioning holes 151 marked "4", the positioning plate 15 is fixed on the connecting clip L1 by the first butterfly screw L2 after completion, and finally, the mounting teeth 1 are inserted into the positioning holes 151, and the positioning plate mounting member 14 is fixedly mounted on the positioning plate 15 by the lock grooves of the tooth tip 1412, and the upper edge positioning points of the iliac crest are made to correspond to the center of the end face of the positioning plate mounting member 14 near the back.
Fig. 15 is a schematic side view of a first measurement procedure of the device for evaluating the balance of the coronal plane of a spinal column according to an embodiment of the present invention, and fig. 16 is a schematic side view of a second measurement procedure of the device for evaluating the balance of the coronal plane of a spinal column according to an embodiment of the present invention.
The following describes a measurement procedure of the spinal column coronal plane balance assessment device 100 in the present embodiment with reference to fig. 15 to 16:
Firstly, the measuring straight ruler 41 is installed on the reference rod 20 and slides to the position right above the C7 spinous process of the person to be evaluated along the length direction of the reference rod 20, then, the surface of the measuring straight ruler 41 is perpendicularly and directly irradiated by an X-ray machine, X-rays penetrate through a scale mark part 411, X-ray perspective images are observed, the scale mark part 411 is displayed as shadows, other parts 412 can be used for perspective, in the perspective images, the distance length from the C7 spinous process to a scale mark '0' is read from the measuring straight ruler 41, namely, the distance length from the C7 spinous process to the reference rod 20, if the distance length is larger than a preset distance, the person to be evaluated is judged to be scoliosis, otherwise, the person to be judged to be not scoliosis is judged, and the preset distance is 20mm in the embodiment.
Effects and effects of the examples
According to the spine coronal plane balance evaluation device, the spine coronal plane balance evaluation device comprises the reference rod, the two positioning rods and the measuring unit, wherein the measuring unit is used for measuring the distance between the reference rod and the C7 vertebral body spinous process, one ends of the two positioning rods are hinged to the reference rod at the same hinge point and form a positioning included angle, the other ends of the two positioning rods are arranged on the back of a human body and correspond to the upper edge points of the two iliac spines respectively, and the reference rod coincides with the angular bisector of the positioning included angle, so that the reference rod coincides with the perpendicular bisector of the connecting line of the upper edge points of the two iliac spines of the human body, and the connecting line of the upper edge points of the two iliac spines of the human body is the anterior superior iliac spine connecting line, therefore, the spine coronal plane balance evaluation device of the embodiment can always and stably measure the distance between the perpendicular bisector of the anterior superior iliac 7 vertebral body spinous process, and the spine coronal plane balance state can be effectively evaluated through the measurement result of the self-carried measuring unit.
Because the positioning unit in this embodiment further includes a moving block and two support rods, two ends of each support rod are respectively hinged to the moving block and the positioning rod, and the distance from the hinge point of each support rod and the positioning rod to the hinge point of each positioning rod and the reference rod is the same, all the angular bisectors of the reference rods and the positioning included angles always coincide in the moving process of the moving block, so that the reference rods always coincide with the perpendicular bisectors of the anterior superior iliac spine connecting lines.
Because the positioning unit of this embodiment still contains locating plate mounting and locating plate, and the locating plate has a plurality of installation teeth, and the installation tooth inserts to be installed in the locating hole, so, the locating plate mounting can be fixed the locating plate on the locating plate in different positions to can be with the centre of a circle of the terminal surface of locating plate mounting and the quick correspondence of ilium top edge point.
Because the material of the locating plate of this embodiment is X-ray opaque material and a plurality of locating holes are arranged in matrix, so when the locating plate is directly irradiated to X-ray, the X-ray image forming area is in matrix formed by a plurality of small areas, thereby being more convenient for locating the upper edge point of the ilium ridge.
Because this embodiment still includes fixed unit, and fixed unit contains connecting rod and fixed subassembly, and the connecting rod is installed on the locating plate, and fixed subassembly contains telescopic link and spinous process clamp, and the telescopic link is vertical to be installed on the spinous process clamp, can stretch out and draw back along vertical direction, so, can adjust the vertical distance of locating plate to connecting block to conveniently set up the locating plate on the back of being assessed person.
Because the fixed subassembly of this embodiment still contains universal dish and two connecting blocks, the universal dish has the arc guide rail, and the connecting block cooperatees with the arc guide rail, can follow the arc guide rail and carry out the arc and remove. Therefore, when the relative position of the connecting rod changes, the connecting block can change flexibly, so that the positioning unit can be flexibly adjusted to position the upper edge point of the ilium of the person to be evaluated when the fixing component is fixed.
Because the measuring straight ruler in the embodiment is provided with the scale mark part and other parts, the scale mark part is made of an X-ray impermeable material, and the other parts are made of an X-ray permeable material, when the measuring straight ruler is directly irradiated by X-rays, the scale mark part is in a shadow scale mark in a perspective image, so that the distance between the perpendicular bisector of the anterior superior iliac spine connecting line and the spinous process of the C7 vertebral body can be conveniently measured and read.
The above embodiments are preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications or variations which may be made by those skilled in the art without the inventive effort within the scope of the appended claims remain within the scope of this patent.
Claims (3)
1. A spinal coronal plane balance assessment device for measuring a distance between a perpendicular bisector of a line connecting upper edge points of two iliac spines and a spinous process of a C7 vertebral body of a human body, comprising:
The positioning unit is used for positioning the upper edge points of the two iliac spines of the human body;
A reference lever disposed on the positioning unit;
A measuring unit for measuring the distance between the reference rod and the spinous process of the C7 vertebral body, and
A fixing unit comprising two connecting rods and a fixing component,
Wherein the positioning unit comprises two positioning rods,
One end of each positioning rod is hinged with the reference rod at the same hinge point, the other end of each positioning rod is arranged on the back of the human body and corresponds to the upper edge points of the two iliac spines respectively,
The included angle formed by the two locating rods is used as a locating included angle, the reference rod is coincident with the angular bisector of the locating included angle, so that the reference rod is coincident with the perpendicular bisector of the connecting line of the upper edge points of the two iliac spines of the human body,
The positioning unit also comprises a moving block and two supporting rods, wherein the moving block is movably arranged on the reference rod so as to move along the length direction of the reference rod, two ends of the supporting rods are correspondingly hinged on the positioning rod and the moving block respectively, the hinge point of the positioning rod and the reference rod is used as a first hinge point, the hinge point of the supporting rods and the positioning rod is used as a second hinge point, the distance between the first hinge point and the second hinge point is used as a hinge distance, the two hinge distances are the same, so that in the moving process of the moving block, the angular bisectors of the positioning included angles and the reference rod always coincide,
The positioning unit also comprises two positioning plate mounting pieces and two positioning plates, the positioning plate mounting pieces and the positioning plates are respectively arranged corresponding to the positioning rods, the positioning plate mounting pieces are detachably arranged at the other ends of the positioning rods and are provided with a plurality of mounting teeth, the positioning plates are provided with a plurality of positioning holes, the mounting teeth are inserted and mounted in the positioning holes,
The two connecting rods are correspondingly arranged on the positioning plate, the fixing component is arranged on the two connecting rods, wherein the fixing component comprises a telescopic rod and a spinous process clamp, the telescopic rod is vertically arranged on the spinous process clamp, the telescopic rod can be telescopic along the vertical direction,
The fixing component further comprises a universal disk and two connecting blocks, the universal disk is arranged at the upper end of the telescopic rod and provided with an arc-shaped guide rail, the two connecting blocks are correspondingly sleeved outside the two connecting rods, the connecting blocks are matched with the arc-shaped guide rail and can move in an arc shape along the arc-shaped guide rail,
The measuring unit comprises a measuring ruler, the length direction of the measuring ruler is perpendicular to the reference rod and is movably arranged on the reference rod so as to be capable of moving along the length direction of the reference rod, and the measuring ruler is provided with a scale line part and other parts, wherein the scale line part is made of X-ray impermeable materials, and the other parts are made of X-ray permeable materials.
2. The spinal coronal plane balance assessment device according to claim 1, wherein:
wherein, a plurality of locating holes are arranged in a matrix.
3. The spinal coronal plane balance assessment device according to claim 1, wherein:
Wherein "0" of the tick mark portion is located at a position corresponding to the reference lever.
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| CN113243996A (en) * | 2021-03-30 | 2021-08-13 | 华中科技大学同济医学院附属协和医院 | Coronal plane balance measurer in spinal orthopedic surgery |
| CN113456092B (en) * | 2021-05-14 | 2022-11-29 | 赵胜 | Intraoperative spinal column crown state balance assessment tool |
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| US4846194A (en) * | 1982-09-30 | 1989-07-11 | Sabia Michael A | Scoliosis measuring apparatus |
| US5156162A (en) * | 1991-08-29 | 1992-10-20 | Gerhardt John J | Scoliosis measurement instrument with midline leg member |
| CN201091581Y (en) * | 2007-11-12 | 2008-07-30 | 殷海东 | Multifunctional backbone rotation measuring apparatus |
| CN103169477B (en) * | 2013-02-01 | 2014-08-20 | 安徽农业大学 | Sleeping posture spine form testing method without interference with sleep |
| CN203828903U (en) * | 2014-05-23 | 2014-09-17 | 南京大学医学院附属鼓楼医院 | Coronal plane balance measurer for spinal deformity correction surgery |
| CN205658913U (en) * | 2016-04-28 | 2016-10-26 | 谢雁春 | A positioning scale for scoliosis epithesis |
| US11540767B2 (en) * | 2017-07-03 | 2023-01-03 | Globus Medical Inc. | Intraoperative alignment assessment system and method |
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