JP3093007B2 - Bone fragment extraction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bone fragment collecting apparatus for collecting bone fragments generated when an implant fossa is drilled in a dental implant operation.

[0002]

2. Description of the Related Art Conventionally, in implant surgery, an implant socket for implanting an implant body is formed in a jaw bone. At this time, cooling water spouted from the turbine, saliva, blood, bone fragments generated by cutting the jaw bone, and the like were suctioned and discharged from the oral cavity using a suction tip of a dental vacuum device. The liquid material in which the bone fragments are mixed has been discarded through a vacuum device, or collected and discarded in a vacuum collecting bottle interposed in a suction path of the vacuum device.

[0003]

Generally, in order to stably implant an implant body in a jaw bone, a method of implanting a bone adhesion material 82 above a body portion 81 of an implant body 80 as shown in FIG. 6, for example. Has been taken. In FIG. 6, reference numeral 85 denotes a jaw bone, and an implant hole 86 is drilled.

[0004] As the bone adhesion material, a biological material using a natural tooth or the like of another family or a non-biological material is used. However, when importance is attached to the affinity for living tissue, it is considered that autologous bone transplantation is the most desirable.

The present invention has been made in view of the above, and an object of the present invention is to selectively collect bone fragments from a liquid mixture of bone fragments sucked into the oral cavity during an implant operation. It is an object of the present invention to provide a bone fragment collecting apparatus and a bone fragment collecting system which can be used.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and a bone fragment collecting apparatus according to the first invention is provided with cooling water, saliva, blood, etc. containing bone fragments from the oral cavity. A bone fragment collecting device provided between a suction tip of a vacuum device and a vacuum hose for sucking a liquid material, wherein one end has an attachment port for the suction tip and the other end is connected to the vacuum hose. A main body having a port, a filter formed in a cylindrical shape and having an inner peripheral wall communicating with the mounting port and an outer peripheral wall communicating with the connection port and removably disposed in the main body; A plunger fitted into the inner peripheral wall and formed to be slidable in the axial direction and always closing the other end side opening of the filter. It is.

[0007]

The bone fragment collecting apparatus according to the first invention is interposed between the suction tip of the vacuum device and the vacuum hose. When the liquid material containing the bone fragments is sucked from the suction tip, they are introduced into the filter from the attachment opening of the bone fragment collecting device.

[0008] The bone fragments are collected by the filter and adhere to the inner peripheral wall thereof, and the liquid component passes through the filter,
It is sucked into the vacuum device through the vacuum hose. The bone fragments adhered and collected on the inner peripheral wall of the filter are extruded with a plunger and scraped off from the filter.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a bone fragment collecting apparatus according to an embodiment of the first invention.

In FIG. 1, reference numeral 1 denotes a bone fragment collecting apparatus, which comprises a cylindrical main body 10 and a filter 30 provided inside the main body 10.
And a plunger 35 slidable on the inner peripheral wall of the filter 30.

The main body 10 is mainly composed of a cylindrical tubular member 11 and a cap nut-shaped cap member 20 screwed to the other end (the right side in FIG. 1). The cylindrical member 11 has, at one end, a mounting port 12 into which a suction tip 7 of the vacuum device 5 described later can be fitted, and an O-ring 16 is fitted into the mounting port 12. A filter support portion 14 having a stepped hole shape for supporting one end of the filter 30 is formed on the downstream side of the mounting port 12. An external thread 13 for attaching the cap member 20 is threaded on the outer periphery of the other end.

The cap member 20 has a bag portion 21 formed inside, and the bag portion 21 communicates with a discharge port 24 which opens toward the other end through a plurality of communication holes 26.
A connection port 29 that fits into the handpiece 8 of the vacuum hose 9 is fixed to the connection port 29. A filter pressing portion 23 protruding toward one end is formed at the center of the bag portion 21, and a plunger support hole 27 is formed at the center of the filter pressing portion 23. The cap member 20 is screwed to the male thread portion 13 with the packing 18 interposed between the cap member 20 and the cylindrical member 11.

The filter 30 is formed in a tubular shape from filter paper in the embodiment. As the filter 30, a porous material such as a nonwoven fabric, a porous ceramic material, a porous sintered metal, or the like can be used. The roughness of the eye is appropriately set according to the size of the bone fragments to be collected.

The plunger 35 is fitted into the inner peripheral wall of the filter 30 and is formed so as to be slidable in the axial direction. A concave portion having a V-shaped cross section is formed on one end surface, and an annular edge portion 36 is formed. Is provided. In addition, a projection 37 that fits into the plunger support hole 27 protrudes from the other end surface. The plunger 35 is fitted in an opening at the other end (right side in FIG. 1) of the filter 30 and is disposed so as to close the opening.

When the filter 30 is installed in the main body 10, one end of the filter 30 is supported by the filter support portion 14, the other end of the filter 30 is closely supported by the filter pressing portion 23, and the plunger 35 is It is supported coaxially with the main body 10 by fitting with the plunger support hole 27.

As a result, the passage 15 is formed between the outer peripheral wall of the filter 30 and the inner peripheral wall of the cylindrical member 11, passes through the filter 30 from the mounting opening 12 and communicates with the passage 15, and further, the bag portion 21 and the communication hole 26. , A suction path to the discharge port 24 is formed.

The thus constructed bone fragment collecting apparatus 1 is connected to a vacuum apparatus 5 as shown in FIG.

The vacuum device 5 has a built-in vacuum pump (not shown) in the main body 6 and discharges a liquid mixture containing bone fragments from the suction tip 7 which can be inserted into the oral cavity through a vacuum hose 9. It is of a known configuration that can be discharged from the outlet 6a. Reference numeral 8 denotes a handpiece provided at the distal end of the vacuum hose 9 and formed so that the suction tip 7 can be attached and detached.

The bone fragment collecting apparatus 1 of the present invention is interposed between the suction tip 7 of the vacuum device 5 and the handpiece 8.

That is, the suction tip 7 is detached from the handpiece 8, and the base end of the suction tip 7 is inserted into the mounting opening 12 of the bone fragment collecting apparatus 1. At this time, an airtight state is maintained by the O-ring 16 between the attachment port 12 and the base end of the suction tip 7. Further, the connection port 29 of the bone fragment collecting device 1 is fitted into the distal end portion of the handpiece 8 while keeping the airtight state.

Thus, the mounting port 12, the filter 30, and the passage 1 of the bone fragment collecting apparatus 1 are extended from the tip of the suction tip 7
5, a suction path to the handpiece 8 and the vacuum hose 9 via the discharge port 24 and the connection port 29 is completed.

When the main body 6 operates, the negative pressure caused by the suction causes suction of saliva, blood, cooling water and cut bone fragments in the oral cavity from the tip of the suction tip 7. When the liquid material containing the bone fragments passes through the bone fragment collection device 1, the bone fragments are collected by the filter 30 and adhere to the inner peripheral wall of the filter 30. The liquid component passes through the filter 30 and passes through the main body 6.
And is discharged from the discharge port 6a. Thereafter, the filter 30 is removed from the main body 10, the plunger 35 is extruded (see FIG. 3), and the bone fragments 2 attached to the filter 30 are scraped and collected.

The bone fragment 2 collected in this manner is applied as a bone adhesion material 82 by a dental applicator to stabilize the implantation of the implant body 80 (see FIG. 5). Since the bone fragment collecting device 1 can be formed in a small size, the entire device can be easily sterilized by a sterilizing autoclave or the like.

FIG. 4 shows another embodiment of the present invention, which is characterized in that a bypass passage for bypassing a filter is provided. In the following description, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The bone fragment collecting apparatus 41 of the second embodiment is screwed to the main body 51 and the filter housing 51b integrally formed in a substantially inverted L-shape, and to the end of the filter housing 51b. The main body 50 is formed from the cap member 67.

The main body 51a is provided with a mounting port 12 at one end, and a switching section 60 is formed downstream thereof. The switching section 60 has valve seats 61 and 62 and a valve body 63, and the valve body 63 is formed so as to rotate by operating a lever 65 about a shaft 64 as a fulcrum. Also, the main body 5
A discharge port 58 having a connection port 29 is provided at the other end of 1a, and a bypass passage 56 is formed between the valve seat 62 and the discharge port 58. On the other hand, a passage 53 is formed on the downstream side of the valve body 61, and the passage 53 communicates with the inner peripheral side of the filter 30 provided in the filter accommodating portion 51b.

The filter housing 51b is provided with the filter 3
A passage 55 communicating with the outlet 58 is formed between the inner peripheral wall of the filter housing 51b and the outer peripheral wall of the filter 30. A cap member 67 is screwed into the male screw portion 52 at the lower end of the filter housing portion 51b, and a plunger support hole 68 is formed in the center of the inside of the cap member 67. The filter 30 is supported by the filter support 54, the cap member 67, and the plunger 35, and is coaxially housed in the filter housing 51b.

Thus, when the valve body 63 closes the valve seat 62, the filter 3 passes through the passage 53 from the mounting port 12.
0, and a suction path is further formed from the passage 55 to the discharge port 58. When the valve seat 61 is closed,
From the attachment port 12 through the bypass passage 56, the discharge port 58
Is formed. According to the bone fragment collecting device 41, the presence or absence of the filter 30 can be switched by a simple operation, so that it is possible to avoid the trouble of attaching and detaching the device and to reduce the wear of the filter 30.

[0030]

As described above, the bone fragment collecting apparatus and the bone fragment collecting system according to the present invention are configured as described above to selectively separate bone fragments from a liquid material in which bone fragments are sucked during an implant operation. Can be collected.

Further, since the apparatus can be made compact, there is an effect that sterilization can be easily performed and bone fragments can be collected under sterilization.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a bone fragment collecting apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a mounting state of the apparatus.

FIG. 3 is an explanatory diagram showing bone fragment collection.

FIG. 4 is a longitudinal sectional view showing another embodiment of the bone fragment collecting apparatus.

FIG. 5 is a sectional view showing an implanted state of the implant body.

[Explanation of symbols]

 1,41 Bone fragment sampling device 5 Vacuum device 7 Suction tip 8 Handpiece 9 Vacuum hose 10,50 Body 30 Filter 35 Plunger

Claims (1)

(57) [Claims] 1. A bone fragment collecting device provided between a suction tip of a vacuum device and a vacuum hose for sucking a liquid substance such as cooling water, saliva, blood, etc. containing bone fragments from the oral cavity. A main body having a mounting port for the suction tip and having a connection port to the vacuum hose at the other end; a tubular body having an inner peripheral wall communicating with the mounting port and an outer peripheral wall communicating with the connection port; A filter removably disposed in the main body, and formed so as to be fitted into the inner peripheral wall of the filter and slidable in the axial direction thereof, and always close the other end side opening of the filter. A bone fragment collecting device, comprising: