JP2000288043A - Instrument holding device for dental care equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an instrument holding device capable of reducing stress felt on an operator's hand during treatment and allowing the operator to concentrate on treatment. SOLUTION: At least one of a holder portion in contact with a tube in use in the vicinity of a through-hole portion and a tube portion in contact with the holder portion in use condition has a frictional force between the holder portion and the tube portion. And a friction portion capable of holding the tube in use was provided.
Therefore, the flexible tube is held in a state where the tube portion that comes into contact with the holder portion near the through-hole portion remains in the holder portion. Therefore, only the stress corresponding to the weight of the flexible tube portion on the distal end side (instrument side) from this tube portion is felt by the surgeon's hand.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument holding device which is disposed on a side of a dental examination table and holds an instrument handled by a dentist or an assistant thereof.

[0002]

2. Description of the Related Art In a dental care apparatus, a device for holding an instrument (hand piece) handled by a dentist or an assistant thereof (hereinafter, appropriately referred to as an "operator") is provided on a side of a dental table. (Instrument holding device). Conventionally, as this instrument holding device, a through hole formed slightly obliquely to the horizontal direction or a through hole formed substantially vertically is formed in a holder having an upper surface and a back surface. There has been proposed an instrument in which an instrument is inserted and held.

On the other hand, an instrument held by such a holder has one end of a flexible tube (protective tube) connected to its proximal end, and the other end of this flexible tube connected to the back of the holder. Is connected to the tube connection part. In the protective tube, for example, in the case of a flexible tube connected to a cutting turbine, a plurality of flexible small-diameter tubes are arranged, and one end of each of the small-diameter tubes corresponds to a corresponding one in the instrument. It is connected to a passage, and the other end is a tube connection part, for example, connected to a compressed air supply path, a vacuum pressure supply path, and a water supply path.

[0004] When the instrument is not used, the instrument has its proximal end (ie, the side opposite to the distal end having a portion in contact with the affected part in the oral cavity) positioned in the through hole. Will be retained. Also, when using the instrument, the instrument is gripped by the operator, and the flexible tube is pulled out from the corresponding through-hole,
The instrument is used in a state where the distal end side of the instrument is located in the oral cavity of the patient.

[0005]

By the way, when the instrument is used (for example, during cutting treatment), only the tip contact pressure of the instrument is applied to the operator's hand so that the operator can concentrate on the treatment. Desirably transmitted via instruments. As described above, since the flexible tube is connected to the proximal end of the instrument as described above, the surgeon actually feels the weight of the flexible tube in his hand. And if the weight of the flexible tube felt by the surgeon or the stress received from the flexible tube increases,
In addition, if the stress changes slightly during treatment,
The surgeon's concentration on treatment is greatly killed.

Accordingly, an object of the present invention is to provide a device in which the surgeon receives as little stress as possible during the treatment, so that the operator can concentrate on the treatment.

[0007]

In order to achieve this object, the present invention provides a holder having a top surface and a back surface, and having a through hole connecting the top surface and the back surface, A flexible tube having one end on the back side of the holder connected to the connecting portion, and a dental instrument connected to the other end on the top side of the holder. And the tube are pulled out from the through hole to the upper surface side of the holder with the instrument, and the instrument is held in the holding portion formed near the through hole and the tube is held by the holder. In the instrument holding device which can be moved between the non-use state retracted to the back side of the instrument, the holder part which is in the vicinity of the through hole and is in contact with the tube in use, or in the use state In at least one of the tube portion in contact with the serial holder portion, increasing the frictional force between these holder portion and the tube portion, characterized in that a friction portion capable of retaining the tube in use.

The friction portion may be an annular member (ring or tube) provided on the tube, a rough surface formed integrally with the tube, a projection formed on the holder, or a pad attached to the holder.

[0009]

According to the instrument holding device of the present invention employing such a configuration, in use, the flexible tube is moved to the holder portion near the through-hole portion due to the presence of the friction portion. Certain tube sections are held stationary. Therefore, the surgeon's hand only feels stress corresponding to the weight of the tube portion located on the tip side (instrument side) of the specific tube portion. Further, the stress felt by the operator's hand does not change during the treatment. Therefore, as compared with the conventional instrument holding device, the operator feels less stress on the hands, and the operator can concentrate on the treatment.

[0010] Further, when an annular member provided on a tube is used as the friction portion, the position of the ring can be easily moved in accordance with the treatment situation, and the stress on the operator's hand can be further reduced.

Further, when a pad or a projection provided on the holder portion is used as the friction portion, the flexible tube can be held at any position.

Further, in the case where the friction portions are provided on both the tube and the holder, the cooperation of the respective friction portions makes it possible to more reliably hold the tube and reduce the stress felt by the operator's hand.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a dental care apparatus 100.
The whole is shown. The dental care apparatus 100 includes a medical table 1 on which a patient (not shown) is placed, a chair 2 for a dentist (not shown), and a device (instrument) holding an instrument (handpiece) handled by the dentist. Ment holding device) 3. Although not shown, the dental care apparatus 100 includes a controller (foot controller) for raising and lowering and rotating the medical table, a device for holding an instrument handled by an assistant, a chair for the assistant, and a patient gargle. Water supply device and the like are included.

The instrument holding device 3 includes a work table 4 on which instruments and materials necessary for medical treatment and treatment are placed, and switches for controlling driving of the medical table 1 such as elevation and rotation separately from the foot controller. Operation panel 5 and a holder 7 for holding various instruments 6.
The instrument holding device 3 is, for example, a medical table 1
The instrument 6 is connected to an arm extending in the lateral direction from an appropriate place in the examination room or from an appropriate place in the examination room, so that the instrument 6 held in the holder 7 can be freely moved to a place and direction where the operator can easily take out the instrument.

As shown in FIG. 2, the holder 7 comprises a plate 8 extending obliquely downward toward the front (left side in the figure). The plate 8 is preferably made by molding a synthetic resin. The plate 8 has a through hole 9 extending substantially horizontally or slightly obliquely downward from the front upper surface (the operator side) to the rear rear so as to connect the upper surface to the rear surface.
And a plurality of cylindrical portions 10 forming the through-hole portion 9 are formed,
Thereby, instruments 6 of different types can be held in each through-hole portion 9 and the cylindrical portion 10.

Each instrument 6 held by the holder 7 has a grip portion and a tip portion having a shape corresponding to the type and use of the instrument 6. A flexible tube 11 is connected to the proximal end of each instrument 6. The flexible tube 11 is made of, for example, silicon-based rubber or olefin-based rubber, and accommodates various circuits (flexible small-diameter tubes) inside. For example, when the instrument 6 is a cutting turbine, the flexible tube 1
In 1, a compressed air supply pipe, a compressed air return pipe, and a water injection pipe are arranged. However, the flexible tube 11 itself may constitute a circuit. The proximal end side of the flexible tube 11 is connected to a connecting portion 12 provided at a lower portion of the table 4, and the small-diameter tube or the tube itself in the connecting portion 12 corresponds to a corresponding tube (for example, compressed air supply). Pipe, irrigation pipe).

The length of the flexible tube 11 is such that the instrument 6 moves smoothly between the non-use state held by the holder 7 and the use state indicated by the phantom line (dashed line) in FIG. It is set to be able to. Specifically, in the case of the present embodiment, each of the flexible tubes 11 has a length of about 1.5 meters. Therefore, the flexible tube 11
As shown best in FIG. 2, the instrument 6 is suspended in a substantially U shape below the table 4 in a state where the instrument 6 is held by the holder 7 (non-use state).

In order to prevent the flexible tube 11 from coming into contact with the floor surface, and to maximize the amount of the flexible tube 11 and the instrument 6 that can be pulled out in use, the flexible tube The connecting portion 12 to which the base end of the tube 11 is connected is disposed at the lower front of the table 4, and a part of each flexible tube 11 is held by a corresponding lifter 13 provided at the lower rear of the table 4. I have.

Each lifter 13 has a housing 14 provided below the table 4. The housing 14 has a drum (not shown) accommodated in the housing 14 corresponding to each flexible tube 11, a cord 15 wound around the drum, and a ring connected to the tip of the cord 15. 16 and a spring (not shown) for rewinding the cord 15 drawn out to the state shown by the phantom line in FIG. 2 to the drum, and the flexible tube 11 is inserted through the ring 16 and supported. . Therefore, when the flexible tube 11 in the used state shown by the dashed line in FIG. 2 is returned to the non-use state, the flexible tube 11 inserted through the ring 16 is urged by the ring 16 urged by the spring. The flexible tube 11 is lifted upward behind the table 4 so that the sag of the flexible tube 11 is reduced.

As shown by a dashed line in FIG. 1, when the instrument 6 and the flexible tube 11 connected to the instrument 6 are pulled out of the holder 7, the instrument 6 has a proximal end portion. As shown by the arrow 17, the weight of the flexible tube 11 and the tube contained therein acts as stress on the operator's hand. The greater the stress, the more the surgeon's concentration is killed.

Therefore, in the first embodiment of the present invention,
As shown in FIG. 3, when the flexible tube 11 is pulled out to the state required for treatment on the proximal end side of the flexible tube 11, the flexible tube 11 is placed on the holder portion 18 near the through-hole 9. An annular friction member, specifically, a rubber ring 20 is mounted on the tube portion 19. The rubber ring 20 has an inner diameter that is substantially the same as the outer diameter of the flexible tube 11, does not significantly deform the flexible tube 11 in a state where the rubber ring 20 is attached to the flexible tube 11, and
A size that can be easily moved to any position along the flexible tube 11 is selected.

Therefore, as shown in FIG. 1, when the instrument 6 is used, the stress acting on the instrument 6 is placed on the holder portion 18 from the distal end of the tube connected to the instrument 6. Only the weight of the tube up to the tube portion 19 is felt by the operator's hand, and the weight of the tube from the tube portion 19 on the holder portion 18 to the proximal end of the tube does not act as stress on the operator's hand. Also, the tube 11 is
Can be temporarily stopped from returning to the back side of the holder 7, and the tube 11 can be prevented from being twisted or twisted.

If the rubber ring 20 does not exist,
Due to the weight of the flexible tube 11, the flexible tube 11 slides on the holder portion 18 with a slight vibration or the like, and at that time, the operator's hand feels a change in stress, and the operator's concentration is killed. There is. However, according to the present invention, the rubber ring 2
With 0, the contact between the specific portion of the flexible tube 11 and the holder portion 18 is stably maintained, so that the operator can concentrate on the treatment without feeling a change in stress.

Further, since the rubber ring 20 can be moved along the flexible tube 11, the rubber ring 20 can be moved to an optimal position according to the position of the operator relative to the patient and the contents of treatment. For example, even when the length from the tube portion in contact with the holder portion 18 to the base end of the tube is increased, the flexible tube 11 is stably held by the contact between the rubber ring 20 and the holder portion 18, and There is no great stress on the hands of the elderly.

The number of the rubber rings 20 mounted on the flexible tube 11 may be one, but it is preferable that the number is plural as shown in the figure. In this case, since the plurality of rubber rings 20 respectively contact different positions of the holder portion 18, the flexible tube 11 can be reliably held at the target position.

The friction member provided on the flexible tube 11 is not limited to the rubber ring 20. As shown in FIG. 4, a separate bush 201 longer than the rubber ring in the center axis direction of the flexible tube 11 is used. There may be. This bush 201 is preferably made of a material having a higher coefficient of friction than the flexible tube 11 in order to increase the frictional force with the holder part 18. In addition, as shown in FIG. 5, the outer periphery of the bush 201 has a circumferential direction (that is, the flexible tube 1).
1 in the direction orthogonal to the central axis)
2, 203 or ridges, whereby the holder part 1
It is preferable to increase the frictional force between the first and second members.

The friction member provided on the flexible tube 11
As shown in FIG. 6, a rough surface portion 204 integrally formed on the outer periphery of the flexible tube 11 may be used. in this case,
The surface of the rough surface portion 204 is “rough” and has a higher coefficient of friction than the tube surface excluding the rough surface portion 204. It is preferable that a plurality of rough surface portions 204 be provided on the flexible tube 11 as illustrated. This rough surface 2
04 also functions similarly to the above-described rubber ring 20 and the like, and reduces stress felt by the operator's hand.

FIG. 7 shows a friction portion according to the second embodiment. The friction portion of this embodiment is provided on the holder portion 18. The friction portion is made of a pad 21 made of, for example, silicon. The pad 21 is attached to a portion (holder portion 18) near the through hole 9 and on which the flexible tube 11 is to be placed when used. The pad 21 may be fixed to the holder portion 18 with an adhesive. However, as shown in FIG. 8A, for example, a projection 22 is provided on the back surface of the pad 21 while the holder portion 18 is provided.
Is preferably provided with a hole 23 penetrating the top and back surfaces of the holder 7, and the projection 22 is fitted into the hole 23. In the case of this detachable pad 21, the pad 21 can be easily attached and detached, and the dirty pad 21 can be replaced with a clean pad 21. Alternatively, the pad 21 may be removed for disinfection and wiping. Further, it is possible to prepare a plurality of types of pads 21 having a relatively rough surface to a fine surface, and use a preferable one according to the type of the instrument. On the other hand, it is not necessary to provide detachable pads one by one in each through-hole portion 9, and as shown in FIG.
May be provided detachably or fixedly. The hole 23 used for the detachable pad may be a simple hole having a substantially circular or substantially rectangular cross section, or as shown in FIG.
3 and the through hole 9 may be connected via the slot 34.

The friction portion provided on the holder portion 18 is shown in FIG.
As shown in (a) and (b), a plurality of ridges 25 or a plurality of protrusions extending in a direction orthogonal to the central axis of the tube portion held thereon are formed on a part of the holder portion 18, The frictional force acting between the flexible tube 11 and the holder portion 18 may be increased by the projection 25 or the projection. FIGS. 10A and 10B show a case where the upper surface inclination angle (α) of the holder 7 is relatively small.
As shown in (a) and (b), the above-described embodiment is applicable to a holder 7 having a relatively large upper surface inclination angle (β).

As shown in FIGS. 10 and 11, the instrument holding device of the present invention may be a combination of the friction portion of the first embodiment and the friction portion of the second embodiment. . In this case, the cooperation between the annular member (rubber ring 20, bush 201) of the first embodiment and the pad 21, the ridge 25, and the projection of the second embodiment further increases the frictional force between the two members, thereby increasing flexibility. The holding power of the sex tube is increased, and the stress felt by the operator's hand can be further reduced.

As described above, the first and second embodiments are not limited to the instrument holding device in which the holder 7 is fixed to the table 4, but as shown in FIG. An instrument holding device connected to the table 4 so as to be able to rotate on a horizontal plane around the center 26, and an instrument holding device (an instrument holding device in which the holder 7 can move in a horizontal direction with respect to the table 4) (Not shown). As shown in FIG. 12, the present invention is also applicable to an instrument holding device in which an auxiliary holder 27 for temporarily temporarily placing the instrument 6 is provided on the holder 7.

The present invention is also applicable to an instrument holder 30 for an assistant as shown in FIG.
Also in this case, a friction portion such as a pad 34 is provided on a holder portion 33 located near the through-hole portion 32 of the holder 31, and / or a rubber ring is provided on a portion of the flexible tube 31 which is in contact with the holder portion 33. And the like, so that the stress felt by the assistant's hand in the use state can be reduced.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a dental care device.

FIG. 2 is a side view of the instrument holding device.

FIG. 3 is a partial perspective view of the instrument holding device according to the first embodiment.

FIG. 4 is a perspective view of a flexible tube provided with an annular friction member.

FIG. 5 is a perspective view showing another form of the annular friction member.

FIG. 6 is a perspective view of a flexible tube in which a rough surface is formed in a part of the outer periphery.

FIG. 7 is a partial perspective view of an instrument holding device according to a second embodiment.

FIG. 8A is a perspective view of a friction portion (pad) and a mounting portion according to a second embodiment, and FIG. 8B is a diagram in which one pad is arranged in front of a plurality of through-hole portions. The partial perspective view of the holder which shows an example.

FIG. 9 is a perspective view showing another embodiment of the pad mounting portion.

10A and 10B are a perspective view and a partial cross-sectional view showing a holder having a small upper surface inclination angle and a friction portion (a ridge) formed on the holder portion.

FIGS. 11A and 11B are a perspective view and a partial sectional view, respectively, showing a holder having a large upper surface inclination angle and a friction portion (ridge) formed in the holder portion.

FIG. 12 is a partial perspective view of another embodiment of the holder.

FIG. 13 is a perspective view of an instrument holding device for an assistant.

[Explanation of symbols]

Reference numeral 100: dental care device, 3: instrument holding device, 6: instrument, 9: through-hole portion, 10: cylindrical portion, 11: flexible tube, 12: connecting portion, 18: holder portion, 19 ... Tube part, 20 ... rubber ring, 21
... pads, 22 ... projections, 23 ... holes.

Claims (5)

[Claims] 1. A holder having an upper surface and a rear surface and having a through hole connecting the upper surface and the rear surface, and one end side inserted through the through hole and located on the rear surface side of the holder as a connecting portion. A flexible tube to which a dental instrument is connected at the other end on the upper surface side of the holder, wherein the instrument and the tube are connected to each other, and the tube is held through the instrument and the tube is inserted through the through hole. The instrument can be moved between a use state in which it is pulled out to the upper surface side of the holder and a non-use state in which the instrument is held in the holding portion formed near the through hole and the tube is retracted to the back side of the holder. In the dental care apparatus configured as described above, at least one of the holder portion that is in the vicinity of the through hole and is in contact with the tube in use or the tube portion that is in contact with the holder in use is An instrument holding device provided with a friction portion capable of increasing a frictional force between the holder portion and the tube portion and holding the tube in a used state. 2. The instrument holding device according to claim 1, wherein the friction portion is an annular member provided on a tube, and the annular member has an inner diameter substantially equal to an outer diameter of the tube. 3. The inner part according to claim 1, wherein the friction portion is a rough surface portion integrally formed with the tube, and the rough surface portion has a higher coefficient of friction than a tube surface other than the rough surface portion. Instrument holding device. 4. The instrument holding device according to claim 1, wherein said friction portion is a projection formed on a holder portion. 5. The instrument holding device according to claim 1, wherein said friction portion comprises a pad attached to a holder portion.