JP2012130359A - Test tool set and surgical kit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a test tool set and a surgical kit, which are excellent in operability during surgery for expanding spinal canal by inserting a spacer into a gap formed by cutting and opening vertebrae or spinous process.SOLUTION: The test tool set 20 includes test tools 1a-1c to be inserted in a gap formed by cutting and opening the vertebrae and check the size of the gap prior to the use of the spacer to be inserted into the gap to expand the spinal canal. The test tools 1a-1c each have a head portion 2 to be inserted into the gap and having a length corresponding to the length of a direction of the spacer in which the spinous canal is expanded, and a grip portion 3 formed long and having a tip end coupled to the head portion 2. The test tools are each wholly colored from the head portion 2 to the grip portion 3. The test tools 1a-1c are different in the length of the head portion 2 and in color.

Description

  The present invention relates to a test tool set and a surgical kit including the same.

  As a treatment for cervical spondylotic myelopathy, posterior longitudinal ligament ossification, yellow ligament ossification, and the like, unilateral invasive one-open spinal canal enlargement is performed. In the one-sided invasive one-open spinal canal enlargement, the spinal canal is expanded by cutting one side (one side) of the vertebral arch and opening the vertebral arch with the other side as a hinge. At this time, a vertebral arch spacer is used as a bone prosthetic material to be inserted into a gap formed by opening the vertebral arch (see, for example, Patent Document 1). Then, by inserting the vertebral arch spacer into the gap, an enlarged vertebral arch can be formed.

  In such a one-side invading single-opening spinal canal enlargement, the size of the gap varies depending on the degree of opening of the vertebral arch. Therefore, a plurality of vertebral spacers having different sizes are prepared so as to match the size of the gap, and these are selected and used.

  For example, when performing a one-side invading single-opening spinal canal enlargement, the size of the gap is visually confirmed before inserting a vertebral spacer into the gap. Then, select a vertebral spacer that would be able to be suitably inserted into the gap, i.e., just sized to be inserted into the gap, and insert the vertebral spacer into the gap. . At this time, if this vertebral spacer can be suitably inserted into the gap, it can be directly fixed to the vertebral arch.

  However, if the vertebral spacer inserted into the gap is too large or too small relative to the gap, the vertebral spacer should be removed until a vertebral spacer is found that can be suitably inserted into the gap. You must reselect. When such a work is performed, there is a problem that it is possible that the rapid operation may be hindered.

JP 2003-79648 A

  It is an object of the present invention to insert a spacer into a gap formed by cutting and opening a vertebral arch or spinous process to perform an operation to enlarge the spinal canal or a defect formed by bone loss It is an object of the present invention to provide a test tool set and a surgical kit which are excellent in operability when performing a surgery for reconstructing a normal bone shape by inserting a spacer into a part.

Such an object is achieved by the present inventions (1) to (10) below.
(1) Inserting into the gap formed by cutting and opening the vertebral arch or spinous process, leading to the spacer used to enlarge the spinal canal and inserting into the gap, the size of the gap A test tool set comprising a plurality of test tools used to confirm
Each of the test devices is inserted into the gap and has a head portion having a length corresponding to the length of the spacer in the direction of enlarging the spinal canal. And a gripping part that is gripped when using the test tool, and at least a part of the test tool is provided with a colored part,
Each of the test devices is characterized in that the length of the head portion is different and the color of the colored portion is also different.

  Thereby, the spacer is inserted into the gap formed by cutting and opening the vertebral arch or spinous process, and the operability when performing the operation of expanding the spinal canal is excellent.

(2) The spacer has a block shape,
The head portion has a block shape simulating the spacer, and the length corresponds to the length of the spacer in the direction of enlarging the spinal canal, and the width and thickness of the head portion are also the spacer. The test tool set according to (1), which corresponds to the width and thickness of the test tool.

  Accordingly, the head portion can be used in the same manner as the spacer, that is, it can be easily inserted into the gap of the vertebral arch, and thus the operability during the operation is more excellent.

  (3) The test device set according to (1) or (2), wherein the colored portion is formed of a metal material in a portion where the colored portion is provided and the portion is subjected to an anodizing treatment.

  Thereby, a colored part will be comprised with an anodic oxide film, Therefore, peeling of a colored part is prevented.

(4) The test device set according to any one of (1) to (3), wherein the coloring portion is provided over the entire head portion and the grip portion.
Thereby, identification of each test device becomes easy.

  (5) The test tool set according to any one of (1) to (4), wherein the gripping portion includes a flat plate-like portion having a flat plate shape with an enlarged width at a base end portion thereof.

  Thereby, for example, the flat plate portion functions as a knob that is picked up by a fingertip when the test tool is lifted from the mounting table.

  (6) The test according to (5), wherein each of the test devices can be placed so that the flat plate portion is raised with respect to the mounting table when the testing tool is mounted on the mounting table. Ingredient set.

  Thereby, when lifting a test tool from a mounting base, a flat plate-shaped part can be easily picked with a fingertip, and, therefore, a testing tool can be quickly lifted from a mounting base.

  (7) The test tool set according to any one of (1) to (6), wherein the grip portion has a bent portion that is bent or curved in a portion in the vicinity of the head portion side.

  Thereby, it is possible to easily perform an operation of gripping the grip portion and inserting the head portion into the gap of the vertebral arch.

  (8) Each said test tool is a test tool set as described in said (7) which can be mounted so that the said head part may become non-contact with the said mounting base, when each mounting on a mounting base.

  Thereby, it is possible to prevent the head part from inadvertently touching the mounting table, and thus it is possible to keep the head part in a clean state.

(9) Insert into the defect formed by the bone defect, and insert into the defect before the spacer used to reconstruct the normal bone shape. A test tool set comprising a plurality of test tools used to confirm
Each of the test devices is inserted into the defect portion and has a head portion having a dimension corresponding to at least one of the length, width, and thickness of the spacer, and has a long shape, the tip portion of which is Connected to the head portion and provided with a gripping portion to be gripped when using the test tool, and at least a part of the test tool is provided with a colored portion,
Each of the test devices is characterized in that the size of the head portion is different and the color of the colored portion is also different.

  Thereby, it is excellent in the operativity at the time of performing the operation which inserts a spacer in a bone defect part and rebuilds the shape of a normal bone.

(10) The test device set according to any one of (1) to (9) above,
The spacer corresponding to each of the test devices, and a packaging material for packaging each of the spacers, and a spacer package set in which one of the spacers is selected and used,
The packaging kit according to claim 1, wherein each of the packaging materials has a portion colored in the same color as the colored portion of the test device corresponding to the spacer packaged by the packaging material.

  As a result, the spacer is inserted into the bone defect (gap) formed by cutting and opening the vertebral arch or spinous process, and the operability when performing an operation for expanding the spinal canal or a bone reconstruction operation is excellent. .

  According to the present invention, when performing a surgery to expand a spinal canal by inserting a spacer into a gap formed by cutting and opening a vertebral arch or spinous process, among a plurality of spacers having different sizes, Until one that can be suitably inserted into the gap of the vertebral arch is found, the trouble of trying to attach / detach each spacer to / from the gap can be omitted. Similarly, when performing an operation for reconstructing a bone defect portion in the same manner as a normal bone shape, the complexity can be omitted. Thereby, it is excellent in the operativity at the time of performing these operations, and a quick operation can be performed.

It is a perspective view which shows the test tool set (1st Embodiment) with which the kit for surgery of this invention is provided. It is a perspective view which shows the spacer package body set with which the kit for surgery of this invention is provided. It is a top view which shows each the head part and spacer of the test device shown in FIG. It is the figure seen from the arrow A direction in FIG. It is a figure which shows the state which mounted the test tool shown in FIG. 1 on the mounting base. It is a figure which shows the state which mounted the test tool shown in FIG. 1 on the mounting base. FIG. 3 is a schematic diagram for step-by-step explanation of a one-sided invasive one-open spinal canal expansion method using the surgical kit shown in FIGS. 1 and 2. FIG. 3 is a schematic diagram for step-by-step explanation of a one-sided invasive one-open spinal canal expansion method using the surgical kit shown in FIGS. 1 and 2. FIG. 3 is a schematic diagram for step-by-step explanation of a one-sided invasive one-open spinal canal expansion method using the surgical kit shown in FIGS. 1 and 2. FIG. 3 is a schematic diagram for step-by-step explanation of a one-sided invasive one-open spinal canal expansion method using the surgical kit shown in FIGS. 1 and 2. FIG. 3 is a schematic diagram for step-by-step explanation of a one-sided invasive one-open spinal canal expansion method using the surgical kit shown in FIGS. 1 and 2. FIG. 3 is a schematic diagram for step-by-step explanation of a one-sided invasive one-open spinal canal expansion method using the surgical kit shown in FIGS. 1 and 2. It is a perspective view which shows one test tool in the test tool set (2nd Embodiment) with which the surgical kit of this invention is provided. FIG. 14 is a schematic diagram for step-by-step explanation of a median longitudinal split-type enlarged laminoplasty using the surgical kit shown in FIG. 13. FIG. 14 is a schematic diagram for step-by-step explanation of a median longitudinal split-type enlarged laminoplasty using the surgical kit shown in FIG. 13. FIG. 14 is a schematic diagram for step-by-step explanation of a median longitudinal split-type enlarged laminoplasty using the surgical kit shown in FIG. 13.

  Hereinafter, a test tool set and a surgical kit of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings. In addition, although the case where the test tool set of the present invention is applied to unilateral invading single-opening spinal canal expansion or midline longitudinal split laminoplasty will be described as an example, the test tool set of the present invention is applied. There are no particular limitations on the surgical technique. In addition, the test device set of the present invention is not limited to the one that simulates a spacer for a vertebral arch, and is, for example, one that simulates a spacer for high tibial osteotomy, an iliac spacer, an intervertebral spacer, and the like. The shape may be a cylindrical shape or a wedge shape.

<First Embodiment>
FIG. 1 is a perspective view showing a test tool set (first embodiment) provided in the surgical kit of the present invention, FIG. 2 is a perspective view showing a spacer package set provided in the surgical kit of the present invention, and FIG. FIG. 4 is a plan view showing the head portion and the spacer of the test device shown in FIG. 1, FIG. 4 is a view seen from the direction of arrow A in FIG. 3, and FIGS. 5 and 6 are the test devices shown in FIG. FIGS. 7 to 12 are diagrams illustrating a state in which the cervical canal is placed on the mounting table, and FIGS. 7 to 12 are respectively for sequentially explaining the one-side invading single-opening spinal canal expansion using the surgical kit shown in FIGS. FIG. In the following description, for convenience of explanation, the head portion side of the test device in FIGS. 1 and 5 is referred to as “tip”, and the opposite side is referred to as “base end”, and FIGS. 1, 2, 5, and 6 are used. The upper side is called “upper” or “upper”, and the lower side is called “lower” or “lower”. Moreover, the upper side in FIGS. 7-12 is a back side, and the lower side is a ventral side.

  The surgical kit 10 shown in FIG. 1 and FIG. 2 is used in a one-sided invasive one-open spinal canal expansion procedure. The surgical kit 10 includes a test tool set 20 having test tools (trials) 1a, 1b, and 1c, and a spacer package body set 30 having spacer package bodies 40a, 40b, and 40c. A spacer 9a is stored in the spacer package 40a, a spacer 9b is stored in the spacer package 40b, and a spacer 9c is stored in the spacer package 40c. The sizes of the spacers 9a to 9c are different from each other.

First, the unilateral invasive one-open spinal canal dilation will be described with reference to FIGS.
[1] As shown in FIG. 7, the vertebra 100 of the cervical vertebra 100 includes a vertebral body 110, a vertebral arch 120 that extends behind the vertebral body 110 (upper side in FIG. 7) and surrounds the spinal canal 140 (vertebral foramen), It has a spinous process 130 protruding backward from the central portion of the vertebral arch 120.

  The spinous process 130 in the vertebral body 110 is cut off (cut) from the vertebral arch 120 along the cutting line 131 while the term ligament, supraspinous / interspinous ligament, muscle group (not shown), etc. remain attached. To do.

  [2] As shown in FIG. 8, one side (the left side in FIG. 8) of the outer portion of the vertebral arch 120 is cut using, for example, an air drill.

  Further, a groove 121 is formed on the other side (right side in FIG. 8) of the outer portion of the vertebral arch 120 using, for example, an air drill. The depth of the groove 121 is such that only the outer plate is cut and the inner plate is not cut. A portion where the groove 121 is formed becomes a hinge portion (hinge) 122.

  [3] As shown in FIG. 9, the vertebral arch 120 is opened outward (rotated) so as to be bent at the hinge portion 122. As a result, a gap (bone defect portion) 150 is formed between the open portion 123 of the vertebral arch 120 and the portion 124 remaining on the vertebra side.

  It should be noted that the cut portion (cut surface) 125 of the portion 124 remaining on the vertebra side of the vertebral arch 120 and the cut portion (cut surface) 126 of the opened portion 123 are shaped as necessary.

  [4] Next, one of the spacers 9a to 9b is selected, and the selected spacer (the spacer 9b in FIG. 12) is inserted into the gap 150 as shown in FIG. It is necessary to confirm (understand) the size of 150. This is because if the size of the gap 150 can be confirmed, it is possible to reliably select a spacer having a size that can be suitably inserted into the gap 150. In this one-side invasive one-open spinal canal expansion method, the test tool set 20 is used to confirm the size of the gap 150 (see FIGS. 10 and 11). The description of the test tool set 20 will be described later.

  [5] Then, by inserting the spacer 9 b into the gap 150, an enlarged vertebral arch 160 is formed by the spacer 9 b and the patient's vertebral arch 120. The spinous process 130 separated in the operation [1] is returned to the center (midline), and is intended to be fused with the enlarged vertebral arch 160 (open portion 123).

Next, the spacer package body set 30 will be described.
As shown in FIG. 2, the spacer package body set 30 includes spacer package bodies 40a to 40c. The spacer package 40a includes a spacer 9a and a packaging material 50a for packaging the spacer 9a. The spacer package 40b has a spacer 9b and a packaging material 50b for packaging the spacer 9b. The spacer package 40c has a spacer 9c and a packaging material 50c for packaging the spacer 9c. The spacer 9a corresponds to the test tool 1a, the spacer 9b corresponds to the test tool 1b, and the spacer 9c corresponds to the test tool 1c.

Spacer 9a~9c, the size are different from each other, i.e., except that the dimensions of the length L ₁ and width w ₁ and the thickness t ₁ of the direction (longitudinal direction) to expand the spinal canal 140 is different from the same Since it is a structure, the spacer 9a is demonstrated typically below. Note that the length _{L 1} is not particularly limited, for example, is preferably from 8～22Mm, and more preferably 10～19Mm. Width _{w 1} is not particularly limited, for example, preferably a 6-8 mm. The thickness _{t 1} is not particularly limited, for example, preferably a 6-8 mm.

  The spacer 9a is inserted into the gap 150 formed by cutting and opening the vertebral arch 120 to expand the spinal canal 140. As shown in FIGS. 3 and 4, the spacer 9 a has a block shape and is gently curved in an arc shape in plan view. In the state where the spacer 9a is inserted into the gap 150, the inner peripheral surface 91 becomes a surface facing the inner side (the spinal canal 140) of the enlarged vertebral arch 160. The outer peripheral surface 92 of the spacer 9 a is a surface facing the outside of the enlarged vertebral arch 160. The curvatures of the inner peripheral surface 91 and the outer peripheral surface 92 may be the same or different.

  As shown in FIG. 3, grooves (defects) 93 are formed at both ends of the spacer 9a. Each groove 93 is formed from the upper surface 94 to the lower surface 95 in FIG. 4 of the spacer 9a, that is, in the thickness direction. In addition, each groove 93 has a width (length in the vertical direction in FIG. 3) that gradually decreases toward the longitudinal center of the spacer 9a. In a state where the spacer 9 a is inserted into the gap 150, the cutting portion 125 of the portion 124 remaining on the vertebra side of the vertebral arch 120 is inserted into one of the grooves 93. Further, the cutting portion 126 of the portion 123 where the vertebral arch 120 is opened is inserted into the other groove 93. Thereby, one groove | channel 93 and the cutting | disconnection part 125 engage, and the other groove | channel 93 and the cutting | disconnection part 126 engage, Therefore, the position shift of the spacer 9a can be prevented reliably.

  Further, two through holes 96 penetrating from the upper surface 94 to the lower surface 95 are formed in the spacer 9a. Each through hole 96 is a portion through which a thread (not shown) for fixing the spacer 9a to the vertebral arch 120 is inserted in a state where the spacer 9a is inserted into the gap 150.

  Such a spacer 9a is preferably made of a ceramic material as a constituent material. Since the ceramic material is excellent in workability, it is easy to adjust its shape, size, etc. by cutting using a lathe, drill or the like.

  Examples of the ceramic material include various ceramic materials, and bioceramics such as alumina, zirconia, and calcium phosphate compounds are particularly preferable. Among these, a calcium phosphate compound is particularly preferable as a constituent material of the spacer 9a because it has excellent biocompatibility.

  Examples of the calcium phosphate compound include apatites such as hydroxyapatite, fluorapatite, and carbonate apatite, dicalcium phosphate, tricalcium phosphate, tetracalcium phosphate, octacalcium phosphate, and the like. A mixture of seeds or more can be used. Of these calcium phosphate compounds, those having a Ca / P ratio of 1.0 to 2.0 are preferably used.

  Of such calcium phosphate compounds, hydroxyapatite is more preferable. Hydroxyapatite has an excellent biocompatibility because it has the same structure as the mineral main component of bone. Moreover, when manufacturing the spacer 9a, the raw material hydroxyapatite particles are more preferably preliminarily fired at 500 to 1000 ° C. Since the activity of the hydroxyapatite particles calcined at such a temperature is suppressed to some extent, uneven sintering due to rapid progress of sintering is suppressed, and a sintered body having no unevenness in strength can be obtained.

  The porosity of the ceramic is preferably 0 to 70%, more preferably 30 to 50%. By setting the porosity within this range, it is possible to exhibit good biocompatibility while maintaining strength and promote osteogenesis by bone conduction.

  As a constituent material of the spacer 9a, in addition to the ceramic material, a composite material of the ceramic material and a metal material having a low biological harm such as titanium can be used.

  The spacer 9a having the above configuration is packaged in the packaging material 50a while maintaining the sterilized state. Similarly, the spacer 9b is packaged in the packaging material 50b while maintaining the sterilized state. The spacer 9c is packaged in the packaging material 50c while the sterilized state is maintained.

  Since the wrapping materials 50a to 50c have the same configuration except that the coloring portion (the wrapping material-side coloring portion) 502 described later has a different color, the wrapping material 50a will be described below as a representative.

  The packaging material 50a is a box-shaped member. A window portion 501 through which the spacer 9a can be viewed is provided on the upper surface of the packaging material 50a. The window 501 may be an opening formed by opening a part of the packaging material 50a, or may be one in which the opening is further covered with a transparent film.

Next, the test tool set 20 will be described.
As shown in FIG. 1, the test device set 20 includes test devices 1a to 1c. The test tools 1a to 1c are used for inserting the gap 150 of the vertebral arch 120 and confirming the size of the gap 150 before any of the spacers 9a to 9c.

Each of the test tools 1a to 1c has a head part 2 and a grip part 3. The sizes of the head portions 2 of the test devices 1a to 1c are different from each other. In other words, the head portion 2 of the test device 1a, the length _{L 1} of the spacer 9a, width _{w 1,} corresponding to the thickness _{t 1} to (equal to) the length _{L 2,} a width _{w 2,} the thickness _{t 2} a head portion 2 of the test device 1b has a length _{L 1} of the spacer 9b, width _{w 1,} the length _{L 2} respectively corresponding to the thickness _{t 1,} width _{w 2,} the thickness _{t 2,} the test head portion 2 of the sushi 1c has a length _{L 1} of the spacer 9c, the width _{w 1,} the length _{L 2} respectively corresponding to the thickness _{t 1,} width _{w 2,} the thickness _{t 2.} In the present embodiment, the size of each head portion 2 may be different in all conditions of length, width, and thickness, but it is sufficient that at least the lengths are different.

  Since the test tools 1a to 1c have the same configuration except that the size of the head part 2 is different, the test tool 1a will be described below representatively.

  As shown in FIGS. 3 and 4, the head portion 2 has a block shape simulating the spacer 9 a and is a portion inserted into the gap 150 of the vertebral arch 120 like the spacer 9 a.

  The head portion 2 is gently curved in an arc shape in the plan view, like the spacer 9a. In the state where the head portion 2 is inserted into the gap 150, the inner peripheral surface 21 becomes a surface facing the inner side (the spinal canal 140) of the enlarged vertebral arch 160 (see FIGS. 10 and 11). The outer peripheral surface 22 of the head portion 2 is a surface facing the outside of the enlarged vertebral arch 160.

  As shown in FIG. 3, grooves (defects) 23 are formed at both ends of the head portion 2. Each groove 23 is formed from the upper surface 24 to the lower surface 25 in FIG. 4 of the head portion 2, that is, in the thickness direction. Further, the width of each groove 23 (the length in the vertical direction in FIG. 3) gradually decreases toward the central portion in the longitudinal direction of the head portion 2. If the head part 2 is inserted into the gap 150 well, that is, not too large or too small with respect to the gap 150 (see FIG. 11), The cut portion 125 of the portion 124 remaining on the vertebra side of the vertebral arch 120 is inserted into one of the grooves 23. Further, the cutting portion 126 of the portion 123 where the vertebral arch 120 is opened is inserted into the other groove 23. As a result, it can be confirmed that the head unit 2 is exactly inserted into the gap 150. And which spacer should be selected from among the spacers 9a to 9c, that is, in the case of the one-side invading single-opening spinal canal expansion shown in FIGS. 6 to 12, it corresponds to the test device 1b having the head portion 2. It is confirmed that the spacer 9b to be selected should be selected.

  The grip portion 3 is a portion that is gripped when the test tool 1a is used. As shown in FIG. 1, the grip portion 3 has a long shape, and the tip portion 31 is connected to the outer peripheral surface 22 of the head portion 2.

  Further, a flat plate portion 32 having a flat plate shape with an increased width is formed at the base end portion of the grip portion 3. As shown in FIG. 5, when the test tool 1 a is placed on the mounting table 300 having the horizontal surface 301, depending on the posture of the test tool 1 a, that is, when the lower surface 25 of the head unit 2 is brought into contact with the horizontal surface 301. The flat plate-like portion 32 is in a state of being upright with respect to the horizontal surface 301 (mounting table 300). The flat plate portion 32 functions as a knob that is picked up by the fingertip 400 when the test tool 1 a is lifted from the mounting table 300. As a result, the test device 1a can be easily and reliably lifted, and therefore, the one-side invading one-opening spinal canal can be performed quickly.

  A bent portion 33 in which the portion is bent (or curved) is formed in the middle of the grip portion 3 in the longitudinal direction, particularly in the vicinity of the head portion 2 side. Thereby, it is possible to easily perform an operation of grasping the grasping portion 3 and inserting (applying) the head portion 2 into the gap 150 of the vertebral arch 120. The bending direction of the bent portion 33 and the surface direction of the flat plate portion 32 are orthogonal to each other.

  As shown in FIG. 6, when the test tool 1 a is placed on the mounting table 300, depending on the posture of the test tool 1 a, that is, when the flat plate portion 32 is inclined with respect to the horizontal plane 301, The part 2 is in a non-contact state separated from the horizontal plane 301. Thereby, the head part 2 can be kept in a clean state. Further, since the flat plate portion 32 is tilted with respect to the horizontal plane 301, it is possible to prevent the entire test device 1a from falling down and the head portion 2 from touching the horizontal plane 301 unintentionally. Thereby, the non-contact state of the head part 2 can be maintained reliably.

  The bending angle of the bent portion 33 is not particularly limited, and is preferably, for example, 5 to 90 degrees, and more preferably 30 to 60 degrees.

  In the test device 1a, the head portion 2 and the grip portion 3 may be connected by a male screw provided on one side and a female screw provided on the other side, but are integrally formed. Is preferred. Thereby, when manufacturing the test tool 1a, the head part 2 and the holding part 3 can be collectively molded using a mold.

  Although it does not specifically limit as a constituent material of the test device 1a, For example, various metals, such as stainless steel, titanium, nickel, aluminum, or the alloy containing these is mentioned, Especially stainless steel and titanium are preferable. Stainless steel and titanium are preferable because they can be subjected to an anodizing treatment described later.

  Now, as shown in FIG. 1, the test instruments 1a to 1c are different in color, and in this embodiment, the test instrument 1a has the entire surface (over the entire head part 2 and the grip part 3). The test tool 1b is tinged with blue, and the entire surface of the test tool 1b is tinged with red. The entire surface of the test tool 1c is tinged with purple. Thus, in each of the test devices 1a to 1c, the entire surface is a colored portion. Thereby, when identifying the test devices 1a to 1c, in addition to the size of the head portion 2, the color can be identified by color. Here, “coloring” includes coloring (applying) the test devices 1 a to 1 c and giving the test devices 1 a to 1 c themselves (coloring).

  Anodizing treatment can be used to color the test devices 1a to 1c. In the anodic oxidation treatment, when the test tools 1a to 1c before coloring are immersed in an electrolyte solution and an AC voltage is applied (energized) using the test tools 1a to 1c as an anode (positive electrode), the surfaces of the test tools 1a to 1c are applied. An anodic oxidation film as an oxide is formed by anodic oxidation. This anodized film is colored and becomes a colored portion. The change (difference) in the color of the colored portion is made by appropriately setting the AC frequency and the AC voltage application time.

  As described above, anodized films having different colors are formed by using anodization as a coloring method. As a result, for example, the colored portion (anodized film) is prevented from being unintentionally peeled off from the test device 1a during use of the test device 1a, thereby affecting the living body when the colored portion is peeled off. It can be surely prevented. In addition, the test devices 1a to 1c are each washed with a strong alkaline washing solution or a strong acid washing solution after use, and even if the washing solution is touched, the colored portion is prevented from being unintentionally peeled off. .

  On the other hand, in the spacer package set 30, colored portions 502 are provided on the side surfaces of the packaging materials 50a to 50c, respectively. The colored portion 502 of the packaging material 50a is tinged with the same color as the test device 1a corresponding to the spacer 9a packaged by the packaging material 50a, that is, blue. The colored portion 502 of the packaging material 50b is tinged with the same color as the test device 1b corresponding to the spacer 9b packaged by the packaging material 50b, that is, red. The colored portion 502 of the packaging material 50c is colored in the same color as the test device 1c corresponding to the spacer 9c packaged by the packaging material 50c, that is, purple.

  In addition, as each coloring part 502, it is preferable to respectively be comprised with what was printed, for example, and what stuck the sheet-like object.

  As described above, in the one-side invading single-opening spinal canal expansion method, it is necessary to confirm the size of the gap 150 before inserting one of the spacers 9 a to 9 b into the gap 150. For this confirmation, the test tools 1a to 1c of the test tool set 20 can be used. Here, an example of how to use the test devices 1a to 1c will be described.

  After the operation [3] of the one-sided invasive one-open spinal canal expansion, the size of the gap 150 of the vertebral arch 120, which is a desired widening length that is considered to have the effect of surgery, is visually confirmed. Then, the test device having the head portion 2 that will just fit in the gap 150 is selected from the test devices 1a to 1c. For example, as shown in FIG. 10, when the test tool 1a is selected and the head part 2 of the test tool 1a is inserted into the gap 150, the head part 2 is slightly smaller than the gap 150 where a desired widening is obtained. I understand that. Therefore, a test tool 1b having a head part 2 larger than the head part 2 of the test tool 1a is selected. Then, as shown in FIG. 11, when the head portion 2 of the test device 1b is inserted into the gap 150, the head portion 2 is preferably inserted into the gap 150 where a desired widening is obtained. Thereby, it can be seen that the spacer to be inserted into the gap 150 is the spacer 9b having the same size as the head portion 2 of the test device 1b. Thereafter, the test device 1b is removed from the vertebra 100.

  And the spacer package 40b which has the coloring part 502 of the same color as the test device 1b can be selected easily and reliably from the spacer packages 40a-40c.

  Next, the spacer 9b is taken out from the spacer package 40b, and the spacer 9b is inserted into the gap 150 using, for example, forceps and fixed. As a result, an enlarged vertebral arch 160 is formed (see FIG. 12).

  Therefore, in the surgical kit 10, the trouble of trying to attach and detach the spacers 9 a to 9 c with respect to the gap 150 is omitted until one that can be suitably inserted into the gap 150 is found from among the spacers 9 a to 9 c. Can do. Thereby, it is excellent in the operativity at the time of performing the one side invasion single opening type spinal canal expansion, and can perform a quick operation. Further, as described above, the spacer package 40b having the colored portion 502 of the same color as the test device 1b can be easily and reliably selected from the spacer packages 40a to 40c. Thereby, the operation can be performed more quickly.

Second Embodiment
FIG. 13 is a perspective view showing one test tool in a test tool set (second embodiment) provided in the surgical kit of the present invention, and FIGS. 14 to 16 show the surgical kit shown in FIG. It is a mimetic diagram for explaining the median longitudinal split-type enlarged laminoplasty used in order.

  Hereinafter, the second embodiment of the test tool set and the surgical kit of the present invention will be described with reference to these drawings. The second embodiment will be described mainly with respect to the differences from the above-described embodiments, and the same matters will be described. Omitted.

  The present embodiment is the same as the first embodiment except that the shapes of the head portion and the grip portion of the test device are different.

A test device 1d shown in FIG. 13 is used in a median longitudinal split-type laminoplasty.
First, the median longitudinal split type laminoplasty will be described with reference to FIGS.

  [1] First, as shown in FIG. 7, the spinous process 130 in the vertebra 100 is removed from the vertebral arch 120 with the term ligament, supraspinous / interspinous ligament, muscle group (not shown), and the like attached thereto. Cut off at the cutting line 131.

  [2] Next, as shown in FIG. 14, the central portion (median portion) of the vertebral arch 120 is cut using, for example, an air drill. As a result, a gap 150 is formed at the center of the vertebral arch 120.

  Further, grooves 121 are formed on the outer side of the root portion of the vertebral arch 120 with the median plane 200 as a boundary, for example, using an air drill or the like.

  The depth of each groove 121 is set such that only the outer plate is cut and the inner plate is not cut. A portion where the groove 121 is formed becomes a hinge portion (hinge) 122.

  [3] Next, as shown in FIG. 15, the vertebral arch 120 is rotated around each hinge part 122 to widen the gap 150.

  If necessary, the cutting portions 125 and 126 facing the gap 150 of the vertebral arch 120 are shaped.

  [4] Next, a spacer (not shown) for enlarging the spinal canal 140 is inserted into the gap 150, but before that, the size of the gap 150 needs to be confirmed. The test tool 1d can be used for this confirmation (see FIG. 16). Then, after confirmation, an enlarged vertebral arch 160 can be formed using a spacer that is just large enough to be inserted into the gap 150. The spinous process 130 separated in the operation [1] is returned to the center (midline), and is intended to be fused with the enlarged vertebral arch 160 (open portion 123).

Next, the test device 1d will be described.
As shown in FIG. 13, the head portion 2 of the test device 1 d has a trapezoidal shape in plan view. As shown in FIG. 16, in the state where the head portion 2 is inserted into the gap 150, the distal end surface 26 becomes a surface facing the inside of the enlarged vertebral arch 160, and the proximal end surface 27 is expanded. It becomes the surface that faces the outside of the larch 160.

In the present embodiment, in addition to the test device 1d, the length L ₂ of the head portion _2, a width w _2, and thickness t ₂ is different plurality prepared, it can be selected and used them. As a result, as in the first embodiment, a quick operation can be performed. Also in this embodiment, similarly to the first embodiment, a spacer package having a colored portion of the same color as each test device can be easily and reliably selected from each spacer package. Thereby, the operation can be performed more quickly.

  In the median longitudinal split-type laminoplasty, it is preferable that the entire gripping portion 3 of the test device 1d is linear.

  As mentioned above, although the test tool set and the surgical kit of the present invention have been described with respect to the illustrated embodiment, the present invention is not limited to this, and the respective parts constituting the test tool set and the surgical kit are the same. It can be replaced with any structure that can perform its function. Moreover, arbitrary components may be added.

  Moreover, the test tool set and the surgical kit of the present invention may be a combination of any two or more configurations (features) of the above embodiments.

  In addition, the test tool set has three test tools having different head sizes in the configuration shown in FIG. 1, but is not limited to this. For example, two, four or more test tools are used. You may have. Similarly, the spacer package set has three spacer packages having different spacer sizes in the configuration shown in FIG. 2, but is not limited to this, for example, two, four or more It may have a spacer package.

  In addition, the size of each head portion imitating a vertebral spacer is different in all the conditions of length, width, and thickness in the configuration shown in FIG. It is sufficient that at least the lengths are different.

  Moreover, in each head part imitating a high-order tibial osteotomy spacer, iliac spacer, intervertebral spacer, etc., all the conditions of length, width, and thickness may be different, but at least any one of them The two conditions should be different.

  In each test device, the entire surface may be a colored portion, but a part of the head portion or the grip portion may be a colored portion.

  In addition, each of the test devices may be composed of a metal material as a whole, that is, the head part and the grip part, but at least one of the head part and the grip part may be composed of a metal material. Good. Alternatively, each of the head part and the grip part may be made of a resin material, but at least one of the head part and the grip part may be made of a resin material. By constituting with a metal material, the colored part can be formed by anodic oxidation, and by constituting with a resin material, it can be formed by kneading a pigment into the colored part. As a result, peeling of the colored portion is prevented.

  The colored portion of each test device may be formed by applying a pigment, or may be formed by kneading the pigment in the test device.

10 Surgical Kit 20 Test Tool Set 30 Spacer Package Set 1a, 1b, 1c, 1d Test Tool (Trial)
2 Head part 21 Inner peripheral surface 22 Outer peripheral surface 23 Groove (defect part)
24 upper surface 25 lower surface 26 distal end surface 27 proximal end surface 3 gripping portion 31 distal end portion 32 flat plate portion 33 bent portion 9a, 9b, 9c spacer 91 inner peripheral surface 92 outer peripheral surface 93 groove (defect portion)
94 Upper surface 95 Lower surface 96 Through hole 40a, 40b, 40c Spacer packaging 50a, 50b, 50c Packaging material 501 Window portion 502 Colored portion (packaging material side colored portion)
300 mounting table 301 horizontal surface 400 fingertip 100 vertebra 110 vertebral body 120 vertebral arch 121 groove 122 hinge part 123 open part 124 part remaining on the vertebral side 125, 126 cutting part 130 spinous process 131 cutting line 140 spinal canal 150 gap 160 enlarged 200 Lumbar arch 200 L ₁ , L ₂ length t ₁ , t ₂ thickness w ₁ , w ₂ width

Claims (10)

Insert into the gap formed by cutting and opening the vertebral arch or spinous process and precede the spacer used to expand the spinal canal to check the size of the gap A test tool set including a plurality of test tools used for
Each of the test devices is inserted into the gap and has a head portion having a length corresponding to the length of the spacer in the direction of enlarging the spinal canal. And a gripping part that is gripped when using the test tool, and at least a part of the test tool is provided with a colored part,
Each of the test devices is characterized in that the length of the head portion is different and the color of the colored portion is also different. The spacer has a block shape,
The head portion has a block shape simulating the spacer, and the length corresponds to the length of the spacer in the direction of enlarging the spinal canal, and the width and thickness of the head portion are also the spacer. The test tool set according to claim 1, which corresponds to the width and thickness of the test tool.   The test device set according to claim 1 or 2, wherein the colored portion is formed of a metal material in a portion where the colored portion is provided, and the portion is subjected to an anodizing treatment.   The test device set according to claim 1, wherein the coloring portion is provided over the entire head portion and the grip portion.   The test tool set according to any one of claims 1 to 4, wherein the grip portion has a flat plate-like portion having a flat plate shape with an enlarged width at a base end portion thereof.   The test tool set according to claim 5, wherein each of the test tools can be placed so that the flat plate portion is raised from the mounting table when the testing tool is mounted on the mounting table.   The test tool set according to any one of claims 1 to 6, wherein the grip portion has a bent portion that is bent or curved at a portion in the vicinity of the head portion side.   8. The test tool set according to claim 7, wherein each of the test tools can be placed so that the head portion is not in contact with the placement table when placed on the placement table. 9. Insert into the defect formed by bone loss and insert into the defect before the spacer used to reconstruct the normal bone shape and check the size of the defect A test tool set including a plurality of test tools used for
Each of the test devices is inserted into the defect portion and has a head portion having a dimension corresponding to at least one of the length, width, and thickness of the spacer, and has a long shape, the tip portion of which is Connected to the head portion and provided with a gripping portion to be gripped when using the test tool, and at least a part of the test tool is provided with a colored portion,
Each of the test devices is characterized in that the size of the head portion is different and the color of the colored portion is also different. A test device set according to any one of claims 1 to 9,
The spacer corresponding to each of the test devices, and a packaging material for packaging each of the spacers, and a spacer package set in which one of the spacers is selected and used,
The packaging kit according to claim 1, wherein each of the packaging materials has a portion colored in the same color as the colored portion of the test device corresponding to the spacer packaged by the packaging material.

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