JP2016087390A - Work length setting/measuring tool of medical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work length setting/measuring tool of a medical instrument which is used in setting a work length of a medical instrument, is compact, has a scale easy to see, facilitates accurate setting, and further is manufactured relatively inexpensively.SOLUTION: A work length setting/measuring tool of a medical instrument is composed of: a stopper setting tool body 11 including a measuring body 3 provided with scales 17 and numerical values 18; and a work length setting member 4 including a work length setting mark 29. The work length setting member 4 can move parallel along an axial center direction of the measuring body 3. For setting a work length setting tool such as a rubber stopper 35 attached on a root canal instrument 5 at a desired length, a fixing tool 24 is arranged which is capable of fixing the measuring body 3 and the work length setting member 4 at an arbitrary position.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a working length setting / measuring tool for a medical instrument, and more specifically, a position of a working length adjuster such as a stopper attached to a medical instrument used when a medical worker performs treatment on a patient. Is a working length setting / measuring tool of a medical instrument for setting the desired working length determined in advance or confirming the length of the medical instrument.

  It is often important how long or how deep to use the medical device to be used during a medical practice in which a health care professional treats a patient. Therefore, the medical staff sets the position of a work length adjusting tool such as a stopper to a predetermined desired work length (including the work depth in this document), or prepares a desired work length. Or use medical equipment.

  In principle, the working length setting / measurement tool of a medical instrument can be used in a similar manner in any department of medical dentistry. For example, when drilling is performed during the treatment of a fracture or the like in an orthopedic region, a safer treatment can be expected by determining the working length and using a stopper. In addition, when a prosthesis is used to repair a part of the body including the facial region with an artificial object, it is desirable to use a working length adjuster for an implant embedding hole forming instrument. The working length setting / measuring tool of a medical instrument can also be used when filling or filling transplantation, regenerated material, or artificial material.

  Here, the working length setting / measurement tool will be described by taking a medical instrument used in dentistry as an example. In the case of dentistry, the position of a working length adjusting tool such as a stopper is often set to a desired working length in root canal treatment, root canal forming treatment, implant treatment, and the like.

Implant treatment is a treatment method in which an artificial tooth root (implant) is embedded in a jawbone at a site where a tooth has been lost, and an artificial crown (superstructure) or the like is attached. In this therapy, an implant embedding hole forming instrument such as a rotary drill or a striking type osteotome is used. The implant embedding hole forming device usually uses several types from thin to thick. Generally, a metal stopper is used as a working length adjuster for these instruments.
Root canal formation treatment is a treatment to grind the teeth around the root canal in order to build a core, and is performed before attaching a prosthesis such as a crown. Peasor reamers or root canals with a rubber topper Often a forming drill is used.

Root canal treatment is a treatment that removes inflamed pulp or cleans inactivated pulp due to deep caries (decayed teeth) or the like. In this therapy, needle-shaped medical devices such as reamers and files are used. Generally, a rubber topper is used as a working length adjuster for these instruments.
Many dentists measure the root canal length (distance from the upper end of the tooth to the tip of the root canal) using an electrical root canal length measuring instrument during root canal treatment, and based on that value The working length (generally, the length obtained by subtracting 1 mm from the root canal length) is determined. When performing root canal treatment, place a measuring tool such as a finger ruler on the finger of the non-dominant hand and measure the distance from the tip of the device such as a reamer or file to the stopper attached to those devices, The position of the stopper is set to the working length while moving the stopper. The stopper attached to the root canal instrument is generally made of rubber and is called a rubber topper.

  Normally, the root canal instrument having a thin working part set to the working length is used to mechanically clean the inside of the root canal, and the root canal instrument having a slightly thicker working part is sequentially replaced. The root canal is enlarged and formed. Usually, a root canal instrument having a working part having a thickness of 5 to 6 at least in one root canal is used. Since there are 1 to 4 root canals per tooth, in the case of teeth with 4 root canals, if the working lengths of all root canals are different, at least 20 to 24 per tooth within a limited time. Will set the working length of the book instruments

When the formation of the root canal is completed, the root canal treatment is completed by filling the inside of the root canal with a dedicated material.
Some dentists use setting tools that efficiently match several instrument rubber toppers to the same working length.

Japanese Patent Publication No. 10-85243

Setting the position of the rubber topper of many instruments to the work length is time-consuming and stressful work, and mistakes in setting the work length are likely to occur.
The working length setting tool for the dental root canal forming instrument described in Patent Document 1 described above can set the working lengths of a plurality of root canal forming instruments at the same time. Is considered to be expensive. Moreover, in order to adjust the scale, it is necessary to turn the screw-type rotating support column, which is disadvantageous in that it takes time.
There has been a demand for a working length setting / measurement tool that solves these problems, is compact, easy to see the scale, easy to set accurately, and can be manufactured relatively inexpensively.

  Therefore, the present invention has been made in consideration of the circumstances as described above, and the purpose of the present invention is compact, easy to see the scale, easy to set accurately, and work that can be manufactured relatively inexpensively. It is to provide a length setting / measurement tool.

(1) The working length setting / measuring tool of the medical instrument according to the first aspect of the present invention is:
A working length setting / measuring tool for a medical instrument used to perform medical treatment on a patient,
A working length adjuster setting unit and a measuring body with a scale,
A work length setting member that is movable along the axial direction of the measuring body and has a work length setting mark,
It has the fixture which fixes the said measurement body and the said work length setting member in arbitrary positions, It is characterized by the above-mentioned.

  Since the working length setting / measuring tool of the medical instrument according to the first aspect of the present invention has the above-described configuration, the working length setting member is preliminarily formed using a working length setting mark and a fixing tool. It can be easily set and fixed to the determined desired working length.

  The tip of the medical instrument is set to the working length by moving the medical instrument downward while bringing a working length adjuster such as a rubber topper attached to the medical instrument into contact with the working length adjuster setting unit. The member can be contacted. In this state, depending on the type of the work length adjustment tool, the work length adjustment tool is set to a desired work length by further fixing to the medical instrument.

  As described above, by using the working length setting / measuring tool of the medical instrument of the present invention, the working length adjusting tool of the medical instrument can be accurately, quickly, and easily adjusted to the tip of the medical instrument. To a desired working length. Moreover, since the working length setting / measurement tool of the medical instrument of the present invention is compact, it is easy to operate and can be manufactured at a relatively low cost.

  (2) In a preferred example of the working length setting / measuring tool of the medical instrument according to the first aspect of the present invention, a cut portion is provided in the working length setting member or the measuring body. The cut portion may be inserted like a slit from the top to the bottom of the work length setting member or the measurement body, or may be a cut that is halfway leaving the upper end or the lower end. Or you may make a notch like a window other than an upper end and a lower end.

  By providing the cut portion, there is an advantage that the portion where the scale is hidden is reduced and it is easy to see. This reduces work mistakes and improves work efficiency.

In another preferred example of the working length setting / measuring tool of the medical instrument according to the first aspect of the present invention, a transparent material is used for the working length setting member or the measuring body.

  By using a transparent material, there is no portion hidden by the scale, the numerical value, or the work length setting mark even without providing a notch, and it is easy to see.

  In still another preferred example of the working length setting / measuring tool of the medical instrument according to the first aspect of the present invention, the scale and the previous working length setting mark are configured to be installed on the same plane.

  As a result, the work length setting mark can be installed on the same plane as the scale, so that it is easy to see and the work length can be set with high accuracy.

  In still another preferred example of the working length setting / measuring tool of the medical instrument according to the first aspect of the present invention, the horizontal positional relationship between the measuring body and the working length setting member is constant. Means are provided.

One of the means for making the horizontal positional relationship between the measuring body and the working length setting member constant is a form that cannot be rotated around the measuring body. For example, a combination of the elliptical cylinder-shaped measuring body and the elliptical cylindrical work length setting member, or a polygonal cylindrical measuring body and a polygonal cylindrical cylinder-shaped working length setting adapted thereto. It is a combination of members.
Further, in another form in which the horizontal positional relationship between the measuring body and the working length setting member is constant, the working length setting member can be rotated around the measuring body, There is one in which the horizontal position is fixed at an arbitrary position determined in advance by tightening the fixing tool. For example, this is a case where an anti-rotation groove or an anti-rotation plane is provided on the measurement body parallel to the axial direction of the measurement body.
The working length setting member is set to a substantially desirable horizontal position with reference to the axis of the measuring body by the rotation preventing groove or the rotation preventing plane. Thereby, there exists an advantage that the distance from the work length adjustment tool setting part to the installation part of the medical instrument tip part, an installation hole, or an installation groove is made accurate. This effect is considered that the rotation prevention groove is higher than the rotation prevention plane.

  In still another preferred example of the working length setting / measuring tool of the medical instrument according to the first aspect of the present invention, the width between the scales and the two continuous scales is set equal.

  Thereby, it is easy to see, and there is an advantage that the working length can be easily set and measured by using the space between two continuous scales.

  In still another preferred example of the working length setting / measuring tool of the medical instrument according to the first aspect of the present invention, the scale or the working length setting mark width is set to 0.5 mm or 1 mm. Yes.

  The working length setting mark applied to the working length setting member may be a thin line that is visible, but it is easier to see if a constant width line such as 0.5 mm width or 1 mm width is given. There is an advantage that accuracy is improved by matching the upper end or the lower end of the same with the scale.

  Further, if the scale is a line having a constant width such as 0.5 mm width or 1 mm width, it becomes easier to see and the working length can be easily set.

Setting the working length setting mark and the scale width to 0.5 mm each, or 0.5 mm on one side and 1 mm on the other side, facilitates the setting for every 0.5 mm that is clinically required.
By doing so, there is an advantage that the working lengths of 0.5 mm and 1 mm level considered necessary in the medical field can be easily set with high accuracy.

  In still another preferred example of the working length setting / measuring tool for a medical instrument according to the first aspect of the present invention, the working length adjusting tool setting unit has a medical instrument passage groove and the medical instrument passage groove has a stopper. An approximately cylindrical stopper holding portion is provided for the intrusion.

  In this example, if the diameter of the stopper and the diameter of the stopper holding part are almost the same, and the stopper enters the stopper holding part, medical instruments of various thicknesses can be installed without tilting so much. The length setting work can be performed easily and accurately. There is also an advantage that a thin medical instrument inserted into the medical instrument passage groove can be held without coming off outward.

  In still another preferred example of the working length setting / measuring tool of the medical instrument according to the first aspect of the present invention, the working length adjuster setting part, the working length setting member, or the instrument tip part installation surface A step, a groove or a slope is provided in a part of at least one of these so that the working length changes at a constant distance.

  Some dentists who perform root canal treatment perform root canal treatment by gradually changing the work length, such as the step back method and the crown down method. In this example, the working length is changed at a constant value of 0.5 mm, 1 mm, etc. on any of the working length adjuster setting unit, the working length setting member, or the instrument tip portion installation surface. By providing a step, a groove or a slope in whole or in part, there is an advantage that it is possible to cope with the setting of the work length of the step back method and the crown down method which have been complicated so far.

  The working length setting / measuring tool of the medical instrument according to the present invention is for measuring body and working length setting so that the working length adjusting tool such as a stopper attached to the medical instrument can be set to a desired working length. Since the working length setting member with the mark can be easily fixed at an arbitrary position, it is efficient to set stoppers for many medical devices, which is time consuming in the normal method. Good and less stress is possible, and the size is compact and the effect is that it can be manufactured at a relatively low cost.

  (A) It is a front view which shows the working length setting and measuring tool of the instrument for root canals which concerns on 1st Embodiment of this invention. (B) It is the elements on larger scale of (A) 31. (C) It is sectional drawing in the C section of (A).   (A) It is a front view which shows the working length setting and measurement tool of the instrument for root canals which concerns on 2nd Embodiment of this invention. (B) It is the elements on larger scale of (A) 31.   (A) It is a perspective view which shows the working length setting and measurement tool of the instrument for root canals which concerns on 3rd Embodiment of this invention. (B) It is the elements on larger scale of (A) 31.   It is a perspective view which shows the working length setting and measurement tool of the root canal instrument which concerns on 4th Embodiment of this invention.   (A) It is a front view which shows the working length setting and measurement tool of the instrument for implants concerning 5th Embodiment of this invention. (B) It is sectional drawing in the B section of (A).   It is a perspective view of Drawing 1 (A) which is a front view showing the working length setting and measuring tool of the instrument for root canals concerning a 1st embodiment of the present invention.

  Hereinafter, the present invention will be specifically described based on embodiments for carrying out the invention with reference to the drawings.

(First embodiment)
1 and 6 show the overall configuration of the working length setting / measuring tool of the root canal instrument according to the first embodiment of the present invention.

As can be seen from the figure, the root canal instrument working length setting / measurement tool 1 according to this embodiment is for inserting the working part 33 of the root canal instrument 5 into one end side (upper side) of the measuring body 3. It comprises a stopper setting tool main body 11 having a root canal instrument holder 2 having a root canal instrument passage hole 14 and a substantially cylindrical work length setting member 4. The working length setting / measurement tool 1 of the root canal instrument is formed of a rigid material such as metal or resin.

The measuring body 3 has a substantially cylindrical shape with a height of 30 mm to 40 mm and a diameter of 20 mm to 30 mm, and the root canal instrument holder 2 has a cylindrical shape with a height of 3 mm to 10 mm and a diameter of 30 mm to 40 mm. The axial centers of the root canal instrument holder 2 and the measuring body 3 coincide. The diameter of the root canal instrument passage hole 14 is preferably 1 mm to 2.5 mm.

The measuring body 3 has a scale 17 and a scale display surface 16 on which a numerical value 18 is written, and the work length setting member 4 is operated so that the work length setting mark 29 is positioned on the same plane as the scale display surface 16. A notch portion peripheral plane portion 27 having a length setting mark 29 and a notch portion 28 are provided, and a fixing tool 24 is provided so that the measuring body 3 can be fixed at an arbitrary position (height).

The work length setting member 4 can be translated along the axial direction (vertical direction) of the measuring body 3, and the work length setting mark 29 is aligned with a scale indicating a predetermined work length. By moving the setting member 4 and fixing the working length setting member 4 with the fixture 24, the rubber topper 35 mounted on the working portion 33 of the root canal instrument 5 is placed in an appropriate position (desired working length). Ready to install.

  Root canal instrument working length setting / measurement instrument 1 Upper root canal instrument holder 2 is provided with a plurality of root canal instrument passage holes 14 parallel to the axial direction (vertical direction) of measurement instrument 3. Then, the working part 33 of the root canal instrument 5 passes and the root canal instrument 5 is held. The number of root canal instrument passage holes 14 is considered to be 4 to 14 standard.

  Each instrument tip installation hole 22 is positioned directly below the corresponding root canal instrument passage hole 14, and the root canal instrument 5 is measured by installing the working part tip 36 of the root canal instrument 5 there. Thus, the measurement error can be reduced.

  The root canal instrument 5 may be sold with or without being attached to the working unit 33 with the rubber topper 35 attached in advance. When not mounted, the working portion 33 is penetrated in the center of the rubber topper 35 so that the working length setting surface 37 of the rubber topper 35 is orthogonal to the axial direction of the working portion 33. Further, in any case, it is confirmed that the rubber topper 35 does not move easily, and the rubber topper 35 is moved in advance to a position on the working part 33 that seems to be more than the working part tip 36 rather than the working length. deep.

  By inserting the working part 33 of the root canal instrument 5 into the root canal instrument passage hole 14, the rubber topper 35 attached to the working part 33 is set to the working length adjustment tool on the upper surface of the root canal instrument holder 2. The working portion distal end 36 is moved downward while rotating the root canal instrument handle portion 34 with the fingers of the operator in the normal direction (in many cases, rotating to the right), so that the working portion distal end 36 is moved to the upper surface of the working length setting member 4. Can be brought into contact with the deepest part of the instrument tip installation hole 22 of the instrument tip installation surface 21. The operator lifts his / her finger and confirms that the rubber topper 35 is in contact with the working length adjuster setting portion 13 and the working portion distal end 36 is in contact with the deepest portion of the instrument distal end portion installation hole 22. Installation of the rubber stopper 35 of the pipe instrument 5 to a desired working length is completed.

  Similarly, in accordance with the order used by the surgeon, the rubber topper 35 is installed at a desired work length from the root canal instrument 5 having the thinnest working portion 33 to the thicker one. The rubber stoppers 35 of all the root canal instruments 5 to be used are installed at a desired working length, and the setting of the rubber stoppers 35 is completed.

  The working length setting / measurement tool 1 of the root canal instrument according to the first embodiment incorporates several mechanisms for increasing the measurement accuracy, making it easy to set the working length, and enabling quick work. ing.

  In the first mechanism, both the fixture contact surface 12 and the bottom surface of the screw portion 26 of the fixture 24 are in contact with each other so that each instrument tip installation hole 22 is directly below the corresponding root canal instrument passage hole 14. It is supposed to be located in. Further, in order to exhibit this effect with high accuracy, the fixture contact surface 12 may be a fixture contact groove 50 as shown in FIG. 4, and the outer surface of the measuring body 3 and the inner surface of the work length setting member 4 are viewed from below. It may be a structure that contacts with a combination of shapes that do not rotate, such as an elliptical shape. Alternatively, as shown in FIG. 3, the same effect may be exhibited by matching the marks such as the fixture center line 44 and the fixture center point with the fixed position confirmation line 45.

  The second mechanism is provided with a drop-off prevention portion 19 that prevents the work length setting member 4 from dropping from the measuring body 3 when the fixing member 24 is loosened by rotating the knob portion 25 counterclockwise with fingers. That is.

The third mechanism relates to facilitating setting the working length accurately. In this regard, the (B) portion 31 of (A) is shown enlarged in (B), and will be described with reference to (B). The scale 17 is indicated by a thick line having a width of 0.5 mm, and the work length setting mark 29 is also indicated by a thick line having a width of 0.5 mm.
This not only makes it easy to see the line, but also facilitates setting every 0.5 mm, which is considered to be clinically necessary accuracy.

  For example, as shown in the figure, the working length setting mark 29 is made to coincide with the 24.5 mm portion 34 which is a white portion between two black 0.5 mm lines (24 mm line 32 and 25 mm line 33) of the scale 17. When the fixing tool 24 is tightened, the working length setting member 4 can be set to 24.5 mm. If the working length setting mark 29 is aligned with the 24 mm line 32, it can be set to 24 mm, and if it is aligned with the 25 mm line 33, it can be set to 25 mm.

The fourth mechanism also relates to making it easy to see the scale 17 and the numerical value 18 and to set the working length accurately.
The working length setting / root setting member 4 of the measuring instrument 1 is provided with a notch 28 such as a window or a slit so that the working tip setting surface 21 is graduated. You don't have to read When reading the scale on the instrument tip portion installation surface 21, it is difficult to read the scale 17 unless the work length setting member 4 is moved from below to above, and the lower numerical value 18 and scale 17 are not visible near the end of setting. There was a problem in the accuracy and accuracy of the length setting. In the present invention, since the cut portions 28 such as windows and slits are provided, the conventional problems are solved.

  Furthermore, since the scale display surface 16 visible from the notch peripheral plane part 27 and the notch part 28 is substantially on the same plane as shown in (C), the scale 17 and the work length setting mark 29 are also substantially on the same plane. Positioned above, it is easy to see and easy to set the working length.

(Second Embodiment)
FIG. 2 shows an overall configuration of a working length setting / measurement tool for a root canal instrument according to the second embodiment of the present invention. As can be seen from the figure, the working length setting / measuring tool 1 of the root canal instrument according to the present embodiment is installed on the one end side (lower side) of the approximately cylindrical or approximately cylindrical measuring body 3. A columnar or cylindrical stopper setting tool main body 11 having an instrument tip part installation body 41 having an instrument tip part installation part 42 on the surface 21, and a substantially cylindrical work length setting member (also serving as a root) having a fixture 24. Tube instrument holder) 20.

The instrument tip portion installation body 41 whose axis coincides with the measurement body 3 preferably has a height of 1 mm to 10 mm and a diameter of 30 mm to 50 mm. The working length setting member (cum root canal instrument holder) 20 has a substantially cylindrical shape with a height of 3 mm to 10 mm and a diameter of 30 mm to 40 mm.
The working length setting / measurement tool 1 of the root canal instrument according to the second embodiment also incorporates several mechanisms for increasing the measurement accuracy, making it easy to set the working length, and enabling quick work. ing.

  The first mechanism is to install the work length setting member (also as a root canal instrument holder) 20 so that the scale display surface 16 and the notch portion surrounding plane part 27 are on the same plane, and thereby the front end of each instrument. The part installation hole 22 is positioned directly below the corresponding root canal instrument passage hole 14. As an actual procedure, the working length setting member (also called a root canal instrument holder) 20 is moved and installed while the left hand thumb is brought into contact so that the scale display surface 16 and the notch portion surrounding plane portion 27 are in the same plane. By doing so, this effect can be exhibited. Alternatively, the same effect can be expected by aligning the left end of the work length setting mark 29 with the rotation installation preventing line 43 provided to connect the right ends of the scales 17.

  The second mechanism relates to facilitating the accurate setting of the working length, and will be described with reference to (B). The scale 17 has a width of 0.5 mm, and the work length setting mark 29 is indicated by a thick line having a width of 1 mm, which facilitates setting every 0.5 mm considered to be clinically necessary accuracy.

  For example, as shown in the drawing, if the upper end of the black 1 mm working length setting mark 29 is aligned with the upper end of the black 0.5 mm 24 mm line 32 at the 24 position of the scale 17, it can be set to 24 mm. . If the upper end of the work length setting mark 29 is aligned with the lower end of the 24 mm line 32, it can be set to 23.5 mm.

  In the third mechanism, a partial slit-shaped cut portion 28 is provided on the work length setting member (cum root canal instrument holder) 20 to make the scale 17 and the numerical value 18 easier to see.

(Third embodiment)
FIG. 3 shows the overall configuration of the working length setting / measuring tool of the root canal instrument according to the third embodiment of the present invention.

As can be seen from the figure, the root canal instrument working length setting / measurement tool 1 according to this embodiment is for inserting the working part 33 of the root canal instrument 5 into one end side (upper side) of the measuring body 3. A stopper setting tool main body 11 having a root canal instrument holder 2 having a stopper holder 52 for holding a root canal instrument passage groove 51 and a rubber topper 35, and a cylindrical work length setting member made of transparent resin It is composed of four. The stopper setting tool main body 11 is formed of a rigid material such as metal or resin.

The width of the root canal instrument passage groove 51 is preferably 0.5 mm to 2 mm. The stopper holding part 52 has a substantially cylindrical shape with a height of 1 mm to 3 mm and a diameter of 3 mm to 5 mm, and is preferably slightly larger than the stopper 35 to be used so that the stopper 35 can be firmly inserted. The lower part is a root canal instrument passage groove 51 having a width of 0.5 mm to 2 mm so that the stopper 35 is held (so as not to fall downward).

The measuring body 3 has a scale 17 having a width of 1 mm and a scale display surface 16 to which a numerical value 18 written at intervals of 5 mm is given, but is not a flat surface, and thus has a circumferential curved surface. Numerical indication lines 55, which are thin lines, extend from the upper end or lower end of the left end of the scale 17 at intervals of 5 mm toward the numerical values 18 described at intervals of 5 mm. Since the work length setting member 4 is a transparent resin, the scale display surface 16 and the work length setting mark 29 are easily positioned when viewed from the front. The scale 17 and the numerical value 18 can be easily seen without the notch peripheral plane part 27, the notch 28, and the flat scale display surface 16 as in the first embodiment, and the work length can be set using the work length setting mark 29. It becomes easy to install the height setting member 4 to a desired work length.

The measuring body 3 is provided with a fixed position confirmation line 45 vertically and the working length setting member 4 is provided with a fixture center line 44 on the instrument tip installation surface 21 so that the two lines coincide with each other. Accordingly, each instrument tip installation groove is positioned directly below the corresponding root canal instrument passage hole 14. In the figure, an instrument tip installation groove 53 having a depth of 0.5 mm is shown on the right, and an instrument tip installation groove 53 having a depth of 1 mm is shown on the left. It is convenient to give a numerical value indicating the depth to the working length setting member 4 or the root canal instrument holder 2 so that the depth of the groove is easily understood.

In this way, it is clinically significant that the working length can be set longer or shorter by 0.5 mm or 1 mm. For example, in actual medical care, the root canal treatment of a tooth having 3 to 4 root canals is often performed, but the work length is often a relatively close value, so the work length setting member 4 is not moved. In addition, there is a high possibility that the rubber stopper 35 of the root canal instrument 5 can be installed at a desired working length. This saves time and effort. In addition, when performing a treatment method that gradually changes the work length such as the step back method and the crown down method, it has been complicated and difficult to install the rubber stopper 35 in an appropriate position. By preparing the root canal instrument 5 according to the working length on another root canal instrument stand, preparation can be made efficiently. If the root canal instrument working length setting / measurement tool 1 is provided with 20 instrument tip installation grooves 53 and root canal instrument passage grooves 51 each having a different depth by 0.5 mm, in many cases. It is considered that root canal treatment can be performed without moving the work length setting member 4.

  The working length setting member 4 has a working length setting mark 29 having a width of 0.5 mm. By aligning the working length setting mark 29 with a scale indicating a predetermined working length, a root canal instrument. The rubber topper 35 attached to the work part 33 of No. 5 is ready to be installed at an appropriate position (desired work length).

  The root canal instrument holder 2 above the root canal instrument working length setting / measuring instrument 1 is provided with a plurality of root canal instrument passage grooves 51 parallel to the axial direction (vertical direction) of the measuring body 3. Then, the working part 33 of the root canal instrument 5 passes and the rubber stopper 35 enters the stopper holding part 52, whereby the root canal instrument 5 is held. The number of root canal instrument passage grooves 51 seems to be 3 to 20 as standard.

  A rubber attached to the working part 33 by inserting the working part 33 closer to the working part tip 36 than the stopper 35 attached to the root canal instrument 5 into the root canal instrument passing groove 51 and moving downward. The stopper 35 is inserted into a stopper holding portion 52 provided on the root canal instrument holder 2 and contacts the bottom of the stopper holding portion 52. The working tip 36 is moved downward while rotating the root canal instrument handle 34 with the fingers of the operator (in many cases, clockwise), so that the working tip 36 is placed on the working length setting member 4 on the upper surface of the working tip. 21 or the deepest part of the instrument tip installation groove 53. The operator lifts his finger and confirms that the rubber top 35 is in contact with the deepest part of the stopper holding part 52 and the working part tip 36 is in contact with the deepest part of the instrument tip part installation surface 21 or the instrument tip part installation groove 53. Confirming, the installation of the rubber topper 35 of one root canal instrument 5 to a desired working length is completed.

  The root canal instrument working length setting / measuring tool 1 according to the third embodiment incorporates several mechanisms for increasing the measurement accuracy, facilitating setting of the working length, and enabling quick work. ing.

  In the first mechanism, the fixture center line 44, the fixture center point, and the like are aligned with the fixing position confirmation line 45, so that each instrument tip portion installation groove 53 is positioned directly below the corresponding stopper holding portion 52. It is supposed to be.

The second mechanism relates to facilitating the accurate setting of the working length, and will be described with reference to (B). The scale 17 is indicated by a thick line having a width of 1 mm, and the work length setting mark 29 is indicated by a thick line having a width of 0.5 mm. A numerical value indicating line 55, which is a thin line, extends from the lower end or the upper end of the left end of the scale 17 toward 20 and 25 described at intervals of 5 mm in the numerical value 18.
This not only makes it easy to see the scale, but also facilitates setting every 0.5 mm, which is considered to be clinically necessary accuracy.
For example, as shown in the figure, if the upper end of the work length setting mark 29 or the instrument tip portion installation surface 21 is aligned with the lower end of the second black 1 mm line in the scale 17, the work length setting member 4 is 22 mm. Can be set to

(Fourth embodiment)
FIG. 4 shows the overall configuration of the working length setting / measuring tool of the root canal instrument according to the fourth embodiment of the present invention.

As can be seen from the drawing, the root canal instrument working length setting / measurement tool 1 according to this embodiment has a root canal instrument passage groove 51 for inserting the working part 33 of the root canal instrument 5 on the upper surface. A stopper setting tool having a holding body 63 for mounting the working length adjuster setting unit 13 on one end side (right end) of the measuring body 3 and the finger of the non-dominant hand on the lower surface near the other end (left end). It is composed of a main body 11 and a work length setting member 4 having a transparent substantially rectangular parallelepiped shape. The working length setting / measurement tool 1 of the root canal instrument is formed of a rigid material such as metal or resin.

The measuring body 3 has a plate-like shape with a length of 15 mm to 25 mm, a width of 30 mm to 40 mm, and a height of 3 mm to 5 mm. The width of the root canal instrument passage groove 51 is preferably 2 mm to 4 mm and a depth of 1 to 3 mm.

The measuring body 3 has a scale 17 and a scale display surface 16 on which a numerical value 18 is written, and the work length setting member 4 is a work length setting mark so that the tool tip portion installation surface 21 can be set to the work length. 29 (gray surface) is given to the instrument tip portion installation surface 21. Further, a fixture 24 is provided so that the measurement body 3 can be fixed at an arbitrary position. The work length setting member 4 can be translated along the axial center direction (left and right direction) of the measuring body 3, and the work length setting mark 29 is aligned with a scale indicating a predetermined work length. By moving the setting member 4 and fixing the working length setting member 4 with the fixture 24, the rubber topper 35 mounted on the working portion 33 of the root canal instrument 5 is placed in an appropriate position (desired working length). Ready to install.

  The upper and lower side surfaces of the measuring body 3 are work length setting member gripping surfaces 62 that become narrower from the scale display surface 16 (upper surface) to the lower surface, and the work length setting member 4 is displayed on the upper and lower work length setting member gripping surfaces 62 and scales. By engaging so as to hold the surface 16 (upper surface), the work length setting member 4 is prevented from being detached from the measuring body 3 or from being lifted.

  By inserting the working portion 33 of the root canal instrument 5 into the root canal instrument passage groove 51 and moving the root canal instrument 5 to the left, the rubber stopper 35 attached to the working portion 33 is The working tool tip 36 is moved to the working length by contacting the height adjusting tool setting part 13 and moving the root canal instrument handle 34 to the left while rotating it in the normal direction (in many cases, rotating rightward). The tool setting member 4 can be brought into contact with the instrument tip portion installation surface 21. The operator confirms that the rubber stopper 35 has moved to the correct position, and the installation of the rubber stopper 35 of one root canal instrument 5 to the desired working length is completed.

  The working length setting / measurement tool 1 of the root canal instrument according to the fourth embodiment also incorporates several mechanisms for increasing the measurement accuracy, making it easy to set the working length, and enabling quick work. ing.

  The first mechanism is concerned with facilitating the accurate setting of the working length. The scale 17 is indicated by a thick line having a width of 0.5 mm, and the work length setting mark 29 appears as a thin line when viewed from above and as a thick line when viewed from the upper right. This makes it easy to see the scale and facilitates setting the working length every 0.5 mm, which is considered to be clinically necessary accuracy.

The second mechanism also relates to making it easy to see the scale 17 and the numerical value 18 so as to easily set the working length.
The opaque work length setting member 4 has a problem in the accuracy and accuracy of the work length setting. In the present invention, since the transparent work length setting member 4 is provided, the conventional problems are solved.

(Fifth embodiment)
FIG. 5 shows the overall configuration of the working length setting / measuring tool of the implant instrument according to the fifth embodiment of the present invention.

  As can be seen from (A), the working length setting / measurement tool 71 of the implant tool according to the present embodiment is an implant tool for inserting the work length setting member 4 and the cutting portion 73 of the implant tool 65. A stopper setting tool main body 11 having a work length adjusting tool setting portion 13 on one end side (right end) of a rectangular (plate-shaped) measuring body 3 having a passage groove 72 on the upper surface, and a work length of an approximately quadrangular pyramid shape. The setting member 4 is configured. The working length setting / measurement tool 71 of the implant instrument is formed of a rigid material such as metal or resin.

  Further, as can be seen from (B), the measuring body 3 has a trapezoidal cross section due to the implant instrument passage groove 72, and widens from the upper surface to the lower surface of the work length setting member 4 at the work length setting member gripping surface 62. The work length setting member 4 is prevented from being detached by holding the upper and lower side surfaces. The fixture 24 is designed such that the screw portion 26 passes through the female screw portion 23 of the work length setting member 4 and can contact the measurement body 3 at the bottom surface of the implant instrument passage groove 72 of the measurement body 3.

  The measuring body 3 has a length of 15 mm to 25 mm, a width of 30 mm to 50 mm, and a height of 3 mm to 5 mm. The width of the implant instrument passage groove 72 is preferably 4 mm to 15 mm and a depth of 2 to 4 mm.

As shown to (A), the measuring body 3 has the scale display surface 16 which wrote the scale 17 and the numerical value 18 on the both sides of the instrument passage groove | channel 72 for implants, and the instrument front-end | tip part installation is set to the working length setting member 4 as shown in FIG. A work length setting mark 29 is provided on the upper part of the instrument tip installation surface 21 so that the upper part of the surface 21 can be set to the work length.
The working length setting member 4 has a tool tip portion installation surface 21 in two steps, and the lower half is 2 mm shorter than the upper half. Also, the upper half of the part and the lower half are inclined so that 2 mm of the scale 17 falls to the right, and a 0.5 mm wide thick line is provided so that the left end is located 0.5 mm and 1.5 mm from the right end. It has been.

  Since the working length setting / measurement tool 71 of the implant instrument according to the fifth embodiment has the above-described configuration, by setting / fixing the working length setting mark 29 to a predetermined working length, The length from the set work length to plus 4 mm can be set in 0.5 mm increments.

As described above, the working length setting / measurement tool 71 of the implant device according to the fifth embodiment can be easily and accurately set the working length, and the structure is simple, so that the cost can be reduced. Is possible.
Further, by aligning the conical tip of the implant drill with the inclined surface of the instrument tip installation surface 21, there is an advantage that the stopper of the drill can be set easily and accurately.

(Other variations)
The first to fifth embodiments described above show examples embodying the present invention. Therefore, the present invention is not limited to this embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.
For example, the measurement body 3 may be a polygonal prism shape such as a quadrangular prism shape, and the number of scales may be one or two or more. The root canal instrument holder 2 may have a cylindrical shape with a hole in the center. As a result, it is lighter and can be put in a finger so as not to fall when held by hand. It can also be used as a stand for inserting a sponge or the like and piercing the root canal instrument 5.
Further, the diameters of the root canal instrument passage holes 14 may all be the same, but may be changed in consideration of the difference in the thickness of the working portion 33 of the root canal instrument 5. In that case, it is preferable that the root canal instrument 5 having the working portion 33 of which thickness is adapted to be understood by a mark or the like.
The mutual relationship between the measuring body 3 and the work length setting member 4 may be reversed. In other words, referring to FIG. 1, the work length setting member 4 is set to a height of 30 to 40 mm, and the scale 17 and the numerical value 18 are replaced with the work length setting mark 29 to set and measure the work length of the root canal instrument. The tool 1 may be produced. In that case, the measuring body 3 and the work length setting member 4 are also switched, the work length setting member 4 is positioned inside, and the work length setting mark 29 is provided near the lower end of the work length setting member 4. Is preferred.

DESCRIPTION OF SYMBOLS 1 Root canal instrument working length setting / measuring tool 2 Root canal instrument holder 3 Measuring body 4 Working length setting member 5 Root canal instrument 11 Stopper setting tool body 12 Fixing tool contact surface 13 Working length adjustment tool Setting part 14 Root canal instrument passage hole 16 Scale display surface 17 Scale 18 Numerical value 19 Fallout prevention part 20 Working length setting member (cum root canal instrument holder)
21 Instrument tip portion installation surface 22 Instrument tip portion installation hole 23 Female screw portion 24 Fixing tool 25 Knob portion 26 Screw portion 27 Cut portion surrounding plane portion 28 Cut portion 29 Work length setting mark 30 Work length setting member bottom surface 31 (B ) Part 33 working part 34 root canal instrument handle 35 rubber topper 36 working part front end 37 rubber topper lower surface 38 24 mm line 39 25 mm line 40 24.5 mm part 41 instrument front end installation body 42 instrument front end installation part 43 preventing rotation installation Line 44 Fixing tool center line 45 Fixing position confirmation line 50 Fixing tool contact groove 51 Root canal instrument passing groove 52 Stopper holding part 53 Instrument tip part installation groove 55 Numerical indication line 62 Working length setting member gripping surface 63 Holding body 65 Implant Instrument 71 Implant Instrument Working Length Setting / Measurement Instrument 72 Implant Instrument Passing Groove 73 Cutting Section 74 Part 75 stopper 77 stopper bottom surface

Claims (9)

A working length setting / measuring tool for a medical instrument used to perform medical treatment on a patient,
A working length adjuster setting unit and a measuring body with a scale,
A work length setting member that is movable along the axial direction of the measuring body and has a work length setting mark,
A working length setting / measuring tool for a medical instrument, comprising: a fixing tool for fixing the measuring body and the working length setting member at an arbitrary position.   The working length setting / measuring tool for a medical instrument according to claim 1, wherein a cut portion is provided in the working length setting member or the measuring body.   The work length setting / measurement tool for a medical instrument according to claim 1 or 2, wherein a transparent material is used for the work length setting member or the measurement body.   The work length setting / measurement tool for a medical instrument according to any one of claims 1 to 3, wherein the scale and the mark for setting the work length in the previous period are configured to be installed on the same plane.   The working length setting / measuring tool for a medical instrument according to any one of claims 1 to 4, further comprising means for preventing the working length setting member from being rotated and fixed around the measuring body.   The working length setting / measuring tool of the medical instrument according to any one of claims 1 to 5, wherein a width between two scales that are continuous with a width of the scale is set to be equal.   The working length setting / measurement tool for a medical instrument according to any one of claims 1 to 6, wherein a width of the scale or the mark for setting the working length is 0.5 mm or 1 mm.   The medical instrument according to any one of claims 1 to 7, wherein the working length adjuster setting part is provided with a medical instrument passage groove and a generally cylindrical stopper holding part into which a stopper enters the medical instrument passage groove. Work length setting / measurement tool.   A step, a groove, or a slope on a part of at least one of the work length adjuster setting unit, the work length setting member, and the instrument tip installation surface so that the work length changes at a certain distance. A working length setting / measuring tool for a medical instrument according to any one of claims 1 to 8.

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