JP2016220855A - Dental suction filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dental suction filter device that can efficiently suck and secure a proper flow rate in suctioning.SOLUTION: The dental suction filter device 10 is configured so that a flow channel 6 for communicating an inlet port 12 for sucking fluid to a discharge port 13 for discharging the fluid is formed. The dental suction filter device includes: a body member 11 formed with an opening part 14 communicated to the flow channel 6; a filter member 20 disposed between the inlet port 12 and the discharge port 13 and having a diameter gradually reduced toward a side of the discharge port 13; and a lid member 30 for blocking the opening part 14.SELECTED DRAWING: Figure 4

Description

  TECHNICAL FIELD The present invention relates to a dental suction filter device for separating and removing solids such as tooth cutting powder and metal sucked by vacuuming or evacuation used during tooth cutting and tooth surface cleaning in dental treatment. .

  Conventionally, in dental treatment, teeth, blood, saliva, molding resin and the like shaved by the treatment are sucked by a suction system instrument called “saliva” or “vacuum”. During suction, if foreign matter such as cutting tooth fragments or filling resin clogs the vacuum blower, which is the power source for suction, it will cause vacuum blower failure and load. A filter is provided between the instrument and the vacuum blower. By using this filter, the vacuum blower can be operated stably. As such a filter, for example, there is an apparatus for treating contaminated air in dental treatment described in Patent Document 1 below and a filter therefor. According to this, the solids processing filter formed in the cylindrical shape is provided, and the foreign matter sucked together with the saliva and the cooling water is caught by the solids processing filter and removed by the suction handpiece. When cleaning or replacing, the solid matter processing filter is directly gripped with bare hands.

  As another filter, there is one in which an upstream end of a main body member formed in a cylindrical cylindrical shape is opened, an exhaust port is formed at a downstream end, and an intake port is formed at a side. A step for holding the filter member is provided on the inner side of the main body member, and a filter member formed in a cylindrical shape following the main body member is disposed so as to hit the step. In this filter, fluid is sucked toward the exhaust port through the filter, and foreign matter is caught on the filter.

Japanese Utility Model Laid-Open No. 5-18624

  However, since the solid matter processing filter described in Patent Document 1 has a cylindrical shape as described above, the flow path is blocked by the corners of the bottom and side portions of the column, and the flow rate is reduced.

  Also, in the other filters, the filter member is formed in a columnar shape following the main body member in the same manner as the solid matter processing filter described above, so that the fluid hits the corners of the bottom and side surfaces of the cylinder in the filter. Further, since the diameter of the exhaust port is different from that of the main body member containing the filter member, it is necessary to provide a step between the main body member and the exhaust port. At the step, the fluid resists at the edge of the filter member and the main body member. And the flow rate is reduced.

  The present invention has been proposed in view of the above circumstances. That is, an object of the present invention is to provide a dental suction filter device that can efficiently suck and secure an appropriate flow rate in suction.

  In order to achieve the above object, a dental suction filter device according to the present invention has a flow path that connects an intake port through which fluid is sucked and an exhaust port through which fluid is discharged, and communicates with the flow channel. A main body member in which an opening is formed, a filter member which is disposed between the intake port and the exhaust port, and which is gradually reduced in diameter toward the exhaust port side, and a lid member which closes the opening. Is provided.

  The dental suction filter device according to the present invention is characterized in that the filter member is detachably attached to the lid member.

  In the dental suction filter device according to the present invention, a rib is formed on the outer periphery of the filter member, and the filter member is disposed with a gap from the inner wall of the main body member in the flow path via the rib. It is characterized by that.

  The dental suction filter device according to the present invention is characterized in that a plurality of the air inlets are formed, and a partition wall that separates a fluid flow path from each of the air inlets is disposed inside the filter member. And

  The dental suction filter device according to the present invention has the above-described configuration. That is, since the filter member is gradually reduced in diameter toward the exhaust port in this flow path with respect to the direction of the fluid flowing between the intake port and the exhaust port, all surfaces of the filter member are in the direction of the fluid. It is inclined with respect to. In other words, since there is no portion where the fluid strikes inside the filter member, the fluid smoothly flows from the intake port to the exhaust port. Therefore, the suction can be efficiently performed and an appropriate flow rate can be secured in the suction. Furthermore, since there is no need to provide a step between the main body member and the exhaust port, an appropriate flow rate can be ensured without receiving flow resistance at the edge portion of the step of the main body member.

  In the dental suction filter device according to the present invention, the filter member is detachably attached to the lid member. With this configuration, the filter member is removed from the main body member together with the lid member by removing the lid member from the main body member in a state where the filter member is disposed in the flow path. Therefore, the filter member can be easily detached from the main body member. Further, when cleaning or replacing the filter member, the filter member can be handled via the lid member without touching the filter member.

  Conventionally, the lid member and the filter member are not attached and detached, and after removing the lid member, the filter member is removed from the main body member with a bare hand, or the rod-like gripping portion formed on the filter member is grasped. It was necessary to remove from the member. For this reason, there are problems on hygiene and efficiency of cleaning. In addition, there is a disposable filter member, which has an economic problem.

  In the dental suction filter device according to the present invention, a rib is formed on the outer periphery of the filter member, and the filter member is disposed with a gap from the inner wall of the main body member in the flow path via the rib. With this configuration, a space is formed between the filter member and the inner wall of the main body member via the rib. Accordingly, it is possible to efficiently suction without disturbing the flow path and to secure an appropriate flow rate in the suction.

  In the dental suction filter device according to the present invention, a plurality of air inlets are formed, and a partition wall that separates a fluid flow path from each air inlet is disposed inside the filter member. With this configuration, each fluid sucked from the plurality of air inlets is rectified by the partition wall. Therefore, it is possible to prevent the fluid from flowing backward from one intake port to the other intake port.

The external appearance of the dental medical device provided with the dental suction filter apparatus which concerns on embodiment of this invention is shown, (a) is an external appearance perspective view, (b) is a partial external appearance enlarged view. It is an external view. A part of dental treatment apparatus provided with a dental suction filter device according to an embodiment of the present invention is shown, (a) is a front view, and (b) is a side view showing an internal structure. A dental suction filter device according to an embodiment of the present invention is shown, (a) is a top view as viewed from above, (b) is a side view as viewed from the side, (c) is an AA side cross-sectional view, (D) is a C-C top sectional view, and (e) is a BB side sectional view. 1 is an exploded external perspective view showing a dental suction filter device according to an embodiment of the present invention in an exploded manner. It is the external appearance perspective view by which the external appearance of the filter member of the dental suction filter apparatus which concerns on embodiment of this invention was shown. The appearance of the filter member of the dental suction filter device according to the embodiment of the present invention is shown, (a) is a rear view seen from the rear, (b) a side view, (c) is a front view seen from the front, d) is a DD side sectional view. The appearance of the filter member and the lid member of the dental suction filter device according to the embodiment of the present invention is shown, (a) is a top view, (b) is a side view, and (c) is a bottom view as viewed from below. d) is a front perspective view, and (e) is a rear perspective view.

  Hereinafter, a dental suction filter device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an external appearance of a dental medical device 1 provided with a dental suction filter device 10 according to an embodiment of the present invention, and FIG. 2 shows a part of the dental medical device 1.

  As shown in FIG. 1, a dental suction filter device 10 according to an embodiment of the present invention is provided in a dental medical device 1 installed in a dental care facility. The dental medical device 1 includes a chair portion 2 on which a patient is seated and a medical device main body portion 3 provided adjacent to the chair portion 2. As shown in FIG. 2, the medical device main body 3 is connected to an instrument tube (both not shown) such as vacuum and saliva, and the liquid or gas sucked by these instruments, etc. A dental suction filter device 10 for collecting foreign substances from the fluid is attached. More specifically, the medical device main body 3 is formed with a window portion 4 to which the dental suction filter device 10 is attached, and an instrument tube is connected to the dental suction filter device 10 attached to the window portion 4. The

<Dental suction filter device>
Next, the dental suction filter device 10 will be described with reference to the drawings. FIG. 3 shows an appearance and a cross section of the dental suction filter device 10 according to the embodiment of the present invention, and FIG. 4 shows each member of the dental suction filter device 10 disassembled. In the following description, in FIG. 4, the full length is the front and rear, and the directions intersecting the full length are the top and bottom and the side.

  As shown in FIGS. 3 and 4, the dental suction filter device 10 includes the following four members. That is, a flow path 6 is formed that communicates an intake port 12 through which fluid is sucked and an exhaust port 13 through which fluid is discharged, and a main body member 11 having an opening 14 that communicates with the flow path 6, and an opening The filter member 20 is disposed between the intake port 12 and the exhaust port 13 through the portion 14 and is gradually reduced in diameter toward the exhaust port 13 side, and the filter member 20 is detachably attached and the opening 14 The dental suction filter device 10 is composed of a lid member 30 that closes the tube and a connection member 16 that connects an instrument tube to the main body member 11. Hereinafter, each member will be described in detail.

<Main body member>
As shown in FIGS. 3 and 4, the main body member 11 has a cylindrical shape, and gradually decreases in diameter from the rear to the front and gently curves so as to be formed into a bullet shape as a whole. At the rear end, an opening 14 through which the filter member 20 is passed is formed. A mounting flange 15 for mounting on the window 4 of the medical device main body 3 is formed on the outer periphery on the rear side. Two intake ports 12 through which fluid is sucked are formed below the rear side. An exhaust port 13 through which fluid is discharged is formed at the front end. The opening 14, the intake port 12, and the exhaust port 13 communicate with each other inside the main body member 11, and a fluid flow path 6 is formed between the intake port 12 and the exhaust port 13.

  The opening 14 is closed by attaching a lid member 30 via the O-ring 5. Two intake ports 12 having different diameters protrude downward and are formed in parallel. Generally, the larger diameter is for vacuum and the smaller diameter is for saliva discharge. A connection member 16 is attached to each intake port 12, and an instrument tube is connected through the connection member 16. The number of intake ports 12 and the size of the diameter are arbitrary. The exhaust port 13 is connected to a vacuum blower (not shown) inside the medical device main body 3. In order to increase the suction efficiency, the diameter of the exhaust port 13 should be as large as possible.

<Filter member>
Next, the filter member 20 will be described with reference to the drawings. 5 and 6 show the filter member 20 of the dental suction filter device 10 according to the present embodiment.

  As shown in FIG. 5 and FIG. 6, the filter member 20 is gradually reduced in diameter from the rear to the front and is gently curved to form an overall shell shape, and the cross section viewed from the side draws a parabola. ing. More specifically, an annular frame 21 formed at the rear end, a protruding frame 22 formed at the front end and having a diameter smaller than that of the annular frame 21, and gently inclined (or curved) from the rear to the front. A linear frame 23 that connects the annular frame 21 and the projecting frame 22 and a mesh portion 24 formed between the frames 21, 22, and 23 are configured. Note that the shape of the mesh is arbitrary as long as excellent air permeability can be realized.

  The linear frame 23 is formed with ribs 25 projecting sideways. As shown in FIG. 3, in a state where the filter member 20 is disposed in the flow path 6 of the main body member 11, the filter member 20 is disposed so as to be spaced from the inner wall of the main body member 11 via the rib 25. . In the annular frame 21, a connection hole 26 for connecting to the lid member 30 is formed. The protruding frame 22 protrudes in an arc shape toward the front, and a plurality of vent holes 27 are formed.

<Cover member>
Next, the lid member 30 will be described with reference to the drawings. FIG. 7 shows a lid member 30 of the dental suction filter device 10 according to this embodiment.

  As shown in FIG. 7, the lid member 30 includes a main body attaching / detaching portion 32 attached to and detached from the opening 14 of the main body member 11, a knob 33 formed at the rear of the main body attaching / detaching portion 32, and a main body attaching / detaching portion. A cylindrical portion 34 formed in front of 32 and a partition wall 35 formed in front of the cylindrical portion 34 are provided.

  The main body attaching / detaching portion 32 is formed in a disc shape following the opening 14 of the main body member 11. The knob 33 is a plate-like piece that is gripped when the lid member 30 is attached to and detached from the main body member 11. The cylindrical portion 34 is substantially cylindrical, and a closed portion 36 that closes the filter member 20 is formed on the side surface, and a part (lower portion) of the side surface is missing, so A gap portion 37 that forms a gap is formed. The partition wall 35 is a plate-like piece that bisects the inside of the cylindrical portion 34 to the side. The partition wall 35 protrudes forward and is disposed inside the filter member 20, and separates the fluid flow path 6 from the intake port 12. (See FIG. 3D). A part of the edge of the partition wall 35 protrudes vertically, and a filter attaching / detaching portion 38 to which the filter member 20 is attached is formed (see FIG. 4). The orientation of the partition wall 35 and the knob 33 is aligned on the same plane.

  As described above, the dental suction filter device 10 according to the present embodiment is configured. Next, the assembly procedure of the dental suction filter device 10 will be described with reference to the drawings.

  As shown in FIG. 2, the main body member 11 is attached to the window 4 of the medical device main body 3 (the right side of the window 4 is attached in FIG. 2A), and the inside of the medical device main body 3. Then, it is fixed through the mounting flange 15 of the main body member 11. A vacuum blower is connected to the exhaust port 13 of the main body member 11, and an instrument tube is connected to the intake port 12.

  As shown in FIGS. 3 and 4, the O-ring 5 and the filter member 20 are attached to the lid member 30. More specifically, the O-ring 5 is attached to the main body attaching / detaching portion 32 of the lid member 30, and the filter attaching / detaching portion 38 of the partition wall 35 is attached to the connection hole 26 of the annular frame 21 of the filter member 20.

  The lid member 30 to which the filter member 20 is attached is attached to the main body member 11. More specifically, the knob 33 of the lid member 30 is gripped, the filter member 20 is disposed in the flow path 6 of the main body member 11, and the main body attaching / detaching portion 32 of the lid member 30 is attached to the opening 14 of the main body member 11. At that time, the gap portion 37 of the lid member 30 faces the air inlet 12 (see FIG. 3E). The vacuum blower is operated in this state.

  The fluid sucked by the instrument flows in from the air inlet 12 and passes through the gap portion 37 of the lid member 30, and is divided by the partition wall 35 and passes through the filter member 20 (see FIG. 3D). Foreign matter contained in the fluid is collected by the filter member 20, and only the fluid passes through the filter member 20 and is exhausted from the exhaust port 13.

  When removing and replacing and cleaning the filter member 20, the knob portion 33 is held and the lid member 30 is removed from the main body member 11 together with the filter member 20.

  As described above, the dental suction filter device 10 according to the present embodiment is configured. Next, the effect of the dental suction filter device 10 will be described.

  As described above, according to the present embodiment, the filter member 20 is disposed between the intake port 12 and the exhaust port 13 of the main body member 11, gradually decreases in diameter from the rear to the front, and gently curves to form the whole. Is formed in a cannonball shape, and the cross section viewed from the side draws a parabola. That is, since the filter member 20 is gradually reduced in diameter toward the exhaust port 13 in the flow path 6 with respect to the direction of the fluid flowing between the intake port 12 and the exhaust port 13, all the mesh portions 24 are arranged. Are inclined with respect to the direction of the fluid. In other words, the fluid smoothly flows from the intake port 12 to the exhaust port 13 because there is no portion where the fluid hits inside the filter member 20. Therefore, the suction can be efficiently performed and an appropriate flow rate can be secured in the suction. Furthermore, since there is no need to provide a step for holding the filter member 20 in the main body member 11, an appropriate flow rate can be ensured without receiving a flow rate resistance at the edge portion of the step of the main body member.

  According to the present embodiment, the filter member 20 (connection hole 26) is detachably attached to the partition wall 35 (filter attachment / detachment portion 38) of the lid member 30. With this configuration, the filter member 20 is removed from the main body member 11 together with the lid member 30 by removing the lid member 30 from the opening 14 of the main body member 11 while the filter member 20 is disposed in the flow path 6. Therefore, the filter member 20 can be easily detached from the main body member 11. Further, the filter member 20 can be handled via the lid member 30 without touching the filter member 20 when cleaning or replacing the filter member 20.

  According to the present embodiment, since the linear frame 23 of the filter member 20 is formed with the ribs 25 protruding toward the side, the filter member 20 is disposed in the flow path 6 of the main body member 11. In FIG. 5, the filter member 20 is disposed with a gap from the inner wall of the main body member 11 through the ribs 25. With this configuration, a space is formed between the filter member 20 and the inner wall of the main body member 11 via the rib 25. Therefore, the flow path 6 can be efficiently sucked without being obstructed, and an appropriate flow rate can be secured in the suction.

  According to the present embodiment, the partition wall 35 formed on the lid member 30 is a plate-like piece that bisects the inside of the cylindrical portion 34 to the side, and protrudes forward and disposed inside the filter member 20. The fluid flow path 6 from the air inlet 12 is separated. With this configuration, each fluid sucked from the two air inlets 12 is rectified by the partition wall 35. Therefore, it is possible to prevent the fluid from flowing backward from one intake port 12 to the other intake port 12.

  According to this embodiment, since the filter member 20 is attached to the lid member 30, the filter member is separated from the inner wall of the main body member 11, and the filter member 20 is not supported by the main body member 11. Therefore, the filter member 20 and the main body member 11 can be designed without depending on each other, and the suction efficiency is increased by increasing the flow rate at the exhaust port 13 by increasing the diameter of the exhaust port 13 as much as possible. The overall flow rate can be increased.

  As a modification of the present embodiment, when the filter member 20 is removed, replaced, and cleaned, the knob 33 is gripped and the lid member 30 is rotated 180 degrees, and the closed portion 36 of the lid member 30 is moved to the intake port of the main body member 11. It is good also as a structure which makes it face 12 and closes the inlet 12 by the obstruction | occlusion part 36. FIG. According to this modification, the following effects occur. That is, the cylindrical portion 34 of the lid member 30 is substantially cylindrical, and a closed portion 36 that closes the filter member 20 is formed on the side surface, and a part of the side surface (lower portion) is missing. A gap portion 37 that forms a gap with the filter member 20 is formed. Therefore, when the vacuum blower is operated with the air gap 37 of the lid member 30 facing the air inlet 12, the fluid 6 sucked by the instrument flows from the air inlet 12 and passes through the air gap 37 of the lid member 30. To do. On the other hand, when removing and replacing and cleaning the filter member 20, the closing portion 36 faces the air inlet 12 of the main body member 11, and the air inlet 12 is closed by the closing portion 36. That is, at the time of inhalation, since the air inlet 12 and the filter member 20 are communicated with each other by the gap portion 37, the fluid flows from the air inlet 12 through the gap portion 37 into the filter member 20. On the other hand, when the filter member 20 is attached / detached, the intake port 12 is blocked by the closing portion 36. Therefore, it is possible to prevent foreign matter from entering the air inlet 12 when the filter member 20 is attached or detached.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment. The present invention can be modified in various ways without departing from the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Dental treatment apparatus 2 Chair 3 Medical treatment apparatus main-body part 4 Window part 5 O-ring 6 Flow path 10 Dental suction filter apparatus 11 Main body member 12 Intake port 13 Exhaust port 14 Opening part 15 Mounting flange 16 Connection member 20 Filter member 21 Circle Annular frame 22 Projection frame 23 Linear frame 24 Mesh part 25 Rib 26 Connection hole 27 Vent hole 30 Lid member 32 Main body attaching / detaching part 33 Knob part 34 Cylindrical part 35 Partition wall 36 Closing part 37 Gap part 38 Filter attaching / detaching part

Claims (4)

A main body member formed with a flow path communicating with an intake port through which fluid is sucked and an exhaust port through which fluid is discharged, and having an opening communicating with the flow path;
A filter member that is disposed between the intake port and the exhaust port and that gradually decreases in diameter toward the exhaust port side;
A lid member that closes the opening,
A dental suction filter device. The filter member is detachably attached to the lid member.
The dental suction filter device according to claim 1. A rib is formed on the outer periphery of the filter member, and the filter member is disposed with a gap from the inner wall of the main body member in the flow path via the rib.
The dental suction filter device according to claim 1, wherein the dental suction filter device is a dental suction filter device. A plurality of the air inlets are formed, and a partition wall that separates a flow path of fluid from each of the air inlets is disposed inside the filter member,
The dental suction filter device according to any one of claims 1 to 3, wherein the dental suction filter device is provided.