JPH10165424A - Apex position detecting unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make operations to expand a root canal more efficient by placing an apex position detecting device at a position where an operator can watch the device clearly. SOLUTION: A flexible arm 40 such as a bellows hose is extended from the side of the backrest of a chair 1 for dental treatment, and this apex position detecting device 30 is integrally attached at the top of the arm 9. The arm 40 can be moved up/down, front/back, left/right, and rotated and tilted. So the apex position detecting device 30 can be moved freely to any position or direction as the operator likes. A winding mechanism (not shown) to wind up a lead line 33 is installed inside the apex position detecting device 30. A connecting jack to connect a lead line 13 for a measuring electrode terminal and a lead line 14 for the opposite electrode terminal are connected to the connecting jack 32 of the lead line 33, and the length of the lead lines extending from the apex position detecting device 30 can be adjusted properly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apex position detecting unit, and more particularly, to a dental treatment chair having an apical position detecting device integrally.

[0002]

2. Description of the Related Art FIG. 2 is an overall configuration diagram for explaining an example of a dental treatment unit to which the present invention is applied. The dental treatment unit includes a treatment chair 1, a spitton 2, a water supply / drainage and control box 3, It consists of a shadow light 4, an instrument holder 5, an instrument 6, an instrument hose 7, a work table 8, an instrument holder 9 for assistants, and the like. As is well known, a patient sits on a chair 1 and fixes his / her head on an abutment to receive treatment, as is well known. During the treatment, the operator moves the treatment chair 1 up and down, tilts down, tilts, etc., and performs the treatment in a posture that facilitates treatment of the patient.

[0003] In dental treatment, the surgeon tilts the treatment chair 1 or further tilts and raises and lowers the entire chair to make it easier to treat, and then, from the back or side of the patient's head. Although treatment is performed, work such as root canal enlargement is frequently performed. In other words, in dental treatment, the root canal of the tooth is cut and the root canal is sequentially expanded to the depth of the apical position to insert a drug into the root canal, or
Frequently, treatment and cleaning are performed to fill the casting restoration. For such a root canal enlargement of a tooth, a sharp needle-shaped root canal file is used. Conventionally, files have been driven by electromagnetic drives. For example, a file mounted on a motor-driven handpiece is cut while rotating, or a compound motion method is used in which a micro-vibration that vibrates in the axial direction of the file is superimposed on the file in addition to the rotary motion to increase cutting efficiency. And so on.

[0004] Fig. 3 is a configuration diagram of an essential part for explaining an example of an apical position detecting device. In the figure, 10 is a file for measuring apical position (or root canal length), 11 is a measuring electrode terminal, and 12 is a measuring electrode terminal. A counter electrode terminal, 13 is a lead wire for the measurement electrode terminal communicating with the measurement electrode terminal 11, 14 is a lead wire for the counter electrode terminal connected to the counter electrode terminal 12 used by being hooked on the lip 15, and 20 is an apex position. (Or root canal length), 21 is a root canal, 22 is a lip, 30 is an apex position measuring device to which the lead wires 13 and 14 are connected, and 31 is an apical hole position detection display unit. As is well known, the apex position detection display unit 31 when the file 10 is inserted into the root canal 21 with the measurement electrode terminal 11 in contact with the file 10
Knowing that the tip of the file 10 has reached the apical position from the pointer position, and moving the stopper 17 to a position where it contacts the tooth 20 in that state, taking it out of the oral cavity, and measuring the length from the tip of the file to the stopper with a ruler However, when the tip of the file 10 approaches the apex position, the pointer of the apex position detection display unit 31 starts to swing.
From this, it can be known that the file tip 10 has approached the apical position. (As a method of electrically detecting the apical hole position, a number of publications have been published, including Japanese Patent Publication No. 62-2187. The details are omitted here).

[0005]

As described above, the dental treatment unit and the apex position detecting device are well known. Conventionally, the apical position detecting device is used, for example, placed on a work table 8. It is common. However, the work table 8 was far away from the treatment position (the oral cavity of the patient), and the work was extremely difficult and the work efficiency was poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and enables an apex position detecting device to be disposed at a position that is easy for an operator to see, thereby improving the efficiency of root canal enlargement work. It was made for the purpose of.

[0007]

According to the first aspect of the present invention, there is provided a dental treatment chair having a bendable arm extending from a side of a backrest, an apex position detecting device attached to a tip end of the arm, and a root apex. And a lead wire for apex position detection that is detachably connected to the apex detection device, so that the root canal enlargement operation can be performed efficiently.

According to a second aspect of the present invention, in the first aspect of the present invention, the apex position detecting device has a jack at a tip end thereof, and is detachably attached to the apex position detecting lead wire via the jack. And a winding mechanism for winding the lead wire connected to the lead wire, thereby preventing the lead wire from hanging down and making it difficult to perform a root canal enlargement operation.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the dental treatment chair further includes a jack for detachably connecting the lead wire for detecting apical position to a backrest side portion. The feature is that the lead wire for apical position measurement can be taken out from a position where the root canal enlargement operation is easy, thereby improving the efficiency of the root canal enlargement operation.

According to a fourth aspect of the present invention, in the second or third aspect, the apex position measuring lead wire has a lead wire portion having a measurement electrode terminal at a tip and a counter electrode terminal at a tip. A lead wire portion and a single lead wire portion where these two lead wire portions are bound, and a jack detachably attached to the jack at an end of the single lead wire portion. As a feature, the disinfection and sterilization (autoclave) of the measurement electrode terminal and the counter electrode terminal are facilitated.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 40 denotes an arm extending from the backrest side of the dental treatment chair 1. The arm 40 is a bendable arm such as a bellows tube. An apex position detecting device 30 is provided integrally. The bellows tube 40 can be moved up and down, back and forth, left and right, rotated, tilted, and the like. Therefore, the apex position detecting device 30 can be freely moved to a desired position and direction of the operator.

Further, a winding mechanism (not shown) for winding the lead wire is provided in the apex position detecting device 30, and the lead wire for the measurement electrode terminal 13 is connected to the lead wire.
The lead wire 14 for the counter electrode terminal is connected, and the length of the lead wire extending from the apex position detecting device 30 can be adjusted to an appropriate length. Specifically, the measurement electrode terminal 1
The lead wire portion 13 for the measurement electrode terminal and the lead wire portion 14 for the counter electrode terminal connected to the
5 and the lead wire portion 15 is connected to the apex position detecting device 3.
The lead wire 33 is detachably connected to the lead wire 33. 1, reference numeral 16 denotes a connection jack provided at an end of the lead wire portion 15, and 32 denotes an apex position detecting device 30.
A connection jack provided at an end of a lead wire 33 (the lead wire 33 is adapted to be wound by a winding mechanism in the root wire position measuring device 30), and the jack 32 is an apex. It can be pulled out from the position detecting device 30 and can be detachably connected to the jack 16 of the lead wire 15.

The measurement electrode terminal 11 and the counter electrode terminal 1
Numeral 2 is used by being put into the oral cavity of a patient, and therefore, it is necessary to replace it with a sterilized one for each patient for hygiene purposes. And the counter electrode terminal 12 to the lead wire portion 13,
If it is possible to remove the entire lead 14 and 15 from the apex position detecting device 30, these autoclaves are facilitated, and the two lead wires 13 and 14 are bound to one lead wire 15. Therefore, the measurement electrode terminal 11 and the counter electrode terminal 12 do not separate from each other, and the operation and management are very easy.

FIG. 1 illustrates an example in which the lead wire portion 15 is connected to the apex position detecting device 30.
As shown by a chain line therein, a jack (not shown) is provided on the body of the dental treatment chair (also in this case, a winding device is provided in the chair body, and a lead wound by the winding device is provided. A jack may be provided at the end of the wire, and the jack of the lead wire 15 may be connected to this jack.) In some cases, a jack provided on the chair body may be used. .

[0015]

According to the first aspect of the present invention, a bendable arm extending from the backrest side of a dental treatment chair, an apex position detecting device attached to a tip of the arm, and an apical position detecting device are provided. And an apex position detecting lead wire that is detachably connected to the apex, so that the root canal enlargement operation can be performed efficiently.

According to a second aspect of the present invention, in the first aspect of the present invention, the apex position detecting device has a jack at a distal end portion, and is detachably attached to the apical position detecting lead wire via the jack. Has a take-up mechanism for winding the lead wire connected to the lead wire, it is possible to prevent the lead wire from hanging down and making it difficult to perform a root canal enlargement operation.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the dental treatment chair further includes a jack for detachably connecting the apical position detecting lead wire to a backrest side portion of the chair. Since the lead wire for apical position measurement can be taken out from a position where the root canal enlargement operation is easy, the root canal enlargement operation can be streamlined.

According to a fourth aspect of the present invention, in the second or third aspect, the apex position measuring lead wire has a lead wire portion having a measurement electrode terminal at a tip and a counter electrode terminal at a tip. Since it has a lead wire portion and a single lead wire portion in which these two lead wire portions are bound, and has a jack detachably attached to the jack at an end of the single lead wire portion, Disinfection and sterilization (autoclave) of the measurement electrode terminal and the counter electrode terminal are easy.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a main part of an embodiment of an apex position detecting unit according to the present invention.

FIG. 2 is an overall configuration diagram for explaining an example of a dental treatment unit to which the present invention is applied.

FIG. 3 is a configuration diagram for explaining an example of an apex position measuring device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Dental treatment chair, 10 ... File, 11 ... Measurement electrode terminal, 12 ... Counter electrode terminal, 13, 14, 15 ... Lead wire part, 16 ... Jack, 20 ... Teeth, 21 ... Root canal, 30 ...
Apical position measuring device, 32 ... jack, 33 ... lead wire,
40 ... arm.

Claims (4)

[Claims] 1. A bendable arm extending from a backrest side of a dental treatment chair, an apex position detecting device attached to a tip of the arm, and detachably connected to the apex position detecting device. An apex position detection unit, comprising: an apex position detection lead wire. 2. A winding mechanism for winding a lead wire having a jack at a tip thereof in the apex position detection device and detachably connected to the apex position detection lead wire via the jack. The apex position detecting unit according to claim 1, comprising: 3. The apex position according to claim 1, further comprising a jack for detachably connecting the apical position detection lead wire to a backrest side of the dental treatment chair. Detection unit. 4. The apex position measuring lead wire includes a lead wire portion having a measurement electrode terminal at a tip portion, a lead wire portion having a counter electrode terminal at a tip portion, and these two lead wires are bound. The apex position according to claim 2 or 3, further comprising a jack that is detachably adhered to the jack at an end of the single lead wire portion. Detection unit.