JP6488246B2 - Stirrer - Google Patents

Description

  The present invention relates to a stirrer such as bone cement used for medical treatment such as orthopedics and dentistry, and the material can be scraped off by an inner lid fixed to the opening of the container after stirring and when the stirring blade is removed In addition, it is possible to attach the inner lid when the lid portion is attached, and it is not necessary to remove the inner lid when extracting the material after stirring, so that the number of work steps can be reduced.

Conventionally, there is known a “bone cement mixing device” in which a cover having a slot is provided between a cylinder and a lid, and a shaft passes through an opening of the slot (see page 6 of Patent Document 1). (See lines 2-5 in the right column (column 11)).
Since the width of the conventional slot is substantially equal to the thickness of the blade, the cement adhering to the surface of the blade is wiped off (8 to 8 in the right column (11 column) on page 6 of Patent Document 1). (See line 12).

  The conventional slot may be integrally provided at one end to which the handle of the cylinder is attached. In this case, bone cement is injected through the slot after mixing (right of page 3 of Patent Document 1). Column (line 6), see lines 47-49). As another form, it is also possible to provide the slot in another member such as a cap or a plate sandwiched between the cylinder and the lid (from the 49th line of the right column (column 6) on page 3 of Patent Document 1). (Refer to the 2nd line of the left column (column 7) on page 4.) In this case, the member provided with the slot is removed before the injection of the bone cement after the mixing paddle is pulled out through the slot (see the left column (column 7) on page 4, page 4 of Patent Document 1). ).

Japanese Patent No. 3238706

  However, in the above-mentioned conventional “bone cement mixing device”, when the slot is integrally provided at one end to which the cylinder handle is attached, the bone cement is injected through the slot after mixing. There is a problem that the injection amount of cement is reduced, the resistance is increased, the injection efficiency is lowered, the rapid injection is difficult, and the structure of the cylinder is complicated.

Further, in the conventional “bone cement mixing device”, as another form, when the slot is provided in another member such as a cap or a plate sandwiched between the cylinder and the lid, the member provided with the slot is: After the mixing paddle was pulled through the slot, it had to be removed before the bone cement injection was performed, and another problem was that rapid injection was difficult due to the need to remove the slot.
Accordingly, each invention described in each claim has been made in view of the problems of the conventional techniques described above, and the object thereof is as follows.

(Claim 1)
The object of the present invention is as follows.
That is, according to the first aspect of the present invention, not only can the material be scraped off by the inner lid fixed to the opening of the container when the stirring blade is removed after stirring, but also when the lid is attached. In addition, since it is not necessary to remove the inner lid when extracting the material after stirring, the number of work steps can be reduced.

(Claim 2)
The second aspect of the invention has the following object in addition to the object of the first aspect of the invention.
That is, in the invention according to claim 2, by providing a passage opening through which the material after stirring can pass in addition to the insertion groove in the inner lid, it is possible to prevent a decrease in efficiency during the extraction of the material. It is a thing.

(Claim 3)
The invention described in claim 3 has the following object in addition to the object of the invention described in claim 1 or claim 2.
That is, the invention described in claim 3 is configured so that the inner lid can be easily and quickly fixed to the container by providing an uneven portion that fits between the container and the inner lid. .

(Claim 4)
The invention according to claim 4 has the following object in addition to the object of the invention according to any one of claims 1 to 3.
That is, the invention according to claim 4 can prevent the falling off of the inner lid from the stirring blade by providing a dropping prevention means for preventing the falling off of the inner lid between the stirring blade and the inner lid. It is a thing.

(Claim 5)
The invention described in claim 5 has the following object in addition to the object of the invention described in claim 3 described above.
That is, the invention according to claim 5 can press the inner lid when the lid portion is rotated so that the concave and convex portions are fitted to each other. And can be securely fixed.

Each invention described in each claim has been made to achieve each of the above-mentioned objects, and features of each invention will be described below using embodiments of the invention shown in the drawings. .
In addition, the code | symbol in parenthesis shows the code | symbol used in embodiment of invention, and does not limit the technical scope of this invention.
Also, the drawing numbers indicate the drawing numbers used in the embodiments of the invention and do not limit the technical scope of the present invention.

(Claim 1)
The invention described in claim 1 is characterized by the following points.
First, as shown in FIGS. 1 and 15, for example, there is a stirring device (10) for stirring a material (not shown).
Secondly, the stirring device (10) has the following configuration, for example, as shown in FIGS.
(1) Container (20)
The container (20) has an opening (21) for storing the material and a storage chamber (22) for storing the material inserted from the opening (21).
(2) Stirring blade (30)
The stirring blade (30) is inserted into the storage chamber (22) through the opening (21), and stirs the material in the storage chamber (22).
(3) Lid (40)
The lid (40) is detachable for closing the opening (21).
(4) Operation unit (50)
The operation part (50) is connected to the stirring blade (30) through the lid (40) from the outside of the container (20), and rotates the stirring blade (30) in the storage chamber (22). It is.
Third, a stirring blade (30) can be inserted between the lid (40) and the opening (21) as shown in FIGS. 10, 11, 15, 17, and 18, for example. With the insertion groove (71), with the stirring blade (30) passed through the insertion groove (71), insert the stirring blade (30) into the storage chamber (22) and open the lid (40). When it is attached to the opening (21), it is fixed to the opening (21), the lid (40) is removed from the opening (21), and the stirring blade (30) is pulled out from the storage chamber (22). An inner lid (70) for scraping off the material adhering to (30) is provided.
Fourth, between the stirring blade (30) and the operation portion (50), as shown in FIG. 1, for example, a connecting portion (60) for transmitting the power of the operation portion (50) to the stirring blade (30). It has.
Fifth, for example, as shown in FIGS. 3 and 4, the connecting portion (60) transmits the power of the operation portion (50) to the stirring blade 30, and bone cement constituting the material by stirring is predetermined. A ratchet (240) is provided to block power transmission when the viscous resistance is exceeded.

(Claim 2)
The invention described in claim 2 is characterized by the following points in addition to the characteristics of the invention described in claim 1 described above.
That is, the inner lid (70) is provided with a passage port (73) through which the material after stirring can pass.

(Claim 3)
The invention described in claim 3 is characterized by the following points in addition to the characteristics of the invention described in claim 1 or claim 2 described above.
First, as shown in FIGS. 10 and 11, for example, the inner lid (70) has a facing portion (for example, an outer fitting portion 74) facing the outer peripheral portion of the container (20) constituting the opening (21). Have
Secondly, a concave portion (25) and a convex portion (75) that fits into the concave portion (25) are provided between the outer peripheral portion and the facing portion (for example, the external fitting portion 74).

(Claim 4)
The invention described in claim 4 is characterized by the following points in addition to the features of the invention described in any one of claims 1-3.
That is, between the stirring blade (30) and the inner lid (70), for example, as shown in FIG. 13, in the state where the stirring blade (30) is pierced through the insertion groove (71), the inner lid (70) A drop prevention means (for example, the protrusion 214) is provided to prevent the drop off.

(Claim 5)
The invention described in claim 5 has the following features in addition to the features of the invention described in claim 3.
First, between the lid portion (40) and the outer peripheral portion, for example, as shown in FIGS. 6 to 8 and FIG. 15, the locking portion (23) and the locking portion (23) are locked. Engaging portions (42).
Secondly, when the lid portion (40) is rotated with respect to the outer peripheral portion between the locking portion (23) and the engaging portion (42), the lid portion (40) is attached to the container (20). An inclined portion (24) that moves forward is provided.
Third, when the lid portion (40) is advanced by the inclined portion (24) between the lid portion (40) and the inner lid (70), the convex portion (75) is fitted in the concave portion (25). A pressing portion (the ceiling surface inside the lid portion 40) that presses to fit is provided.

Since this invention is comprised as mentioned above, there exists an effect as described below.
(Claim 1)
According to invention of Claim 1, there exist the following effects.
That is, according to the first aspect of the invention, after the stirring, when removing the stirring blade, not only can the material be scraped off by the inner lid fixed to the opening of the container, but also when the lid is attached. Since the inner lid can be mounted and the removal of the inner lid is not necessary when extracting the material after stirring, the number of work steps can be reduced.

(Claim 2)
According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the following effect is obtained.
That is, according to the invention described in claim 2, in addition to the insertion groove in the inner lid, it is possible to prevent a reduction in efficiency during the extraction of the material by providing a passage port through which the material after stirring can pass. .

(Claim 3)
According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the following effect is obtained.
That is, according to the third aspect of the present invention, the inner lid can be easily and quickly fixed to the container by providing the concave and convex portions that fit into each other between the container and the inner lid.

(Claim 4)
According to the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1-3, the following effect is provided.
That is, according to the invention described in claim 4, it is possible to prevent the falling of the inner lid from the stirring blade by providing the falling prevention means for preventing the falling of the inner lid between the stirring blade and the inner lid. it can.

(Claim 5)
According to the invention described in claim 5, in addition to the effect of the invention described in claim 3, the following effect is obtained.
That is, according to the fifth aspect of the present invention, the inner lid is pressed when the lid is rotated, and the uneven portions can be fitted together. It can be securely fixed with a light force.

It is a disassembled perspective view of a stirring apparatus. It is a perspective view of a container, the 1st seal member, and a bottom. It is a disassembled perspective view of a stirring blade and a connection part. It is a perspective view of an operation part, a connection part, and the 2nd and 3rd seal member. It is a perspective view of a stirring blade and an inner lid. It is for demonstrating a container, The figure (a) is a front view, (b) is sectional drawing which follows the AA line of (a). It is for demonstrating a container, The figure (a) is an enlarged view of the B section of FIG.6 (b), (b) is an enlarged view of the C section of FIG.6 (a). It is for demonstrating a cover part, The figure (a) is a side view, (b) is sectional drawing which follows the DD line | wire of (a). It is for demonstrating a connection part and a stirring blade, The same figure (a) is a top view of a connection part, (b) is a top view of the receiving part of a stirring blade. It is for demonstrating an inner lid, The figure (a) is a perspective view, (b) The other perspective view seen from the bottom face direction. It is for demonstrating an inner lid, The figure (a) is a top view, (b) is sectional drawing which follows the EE line of (a). It is for demonstrating a funnel, the same figure (a) is a perspective view, (b) The other perspective view seen from the bottom face direction. It is a perspective view of a lid unit. It is a perspective view of the container equipped with the funnel. It is a longitudinal cross-sectional view of the stirring apparatus of an assembly state. FIG. 16 is a cross-sectional view corresponding to FIG. 15 in a state where a connecting pin is pushed in. It is a longitudinal cross-sectional view of the container with which the inner lid was mounted | worn. FIG. 18 corresponds to FIG. 17 and is a half sectional perspective view. It is a longitudinal cross-sectional view of the container equipped with the nozzle. It is a perspective view of a gun.

(Agitator 10)
1 and 15, reference numeral 10 denotes a stirrer, which is used for medical treatment such as orthopedics and dentistry, for example, and is a material whose viscosity resistance increases when mixed (not shown, hereinafter also referred to as “bone cement”). It is for stirring. Bone cement is composed of an acrylic resin that hardens gradually by mixing powder and liquid, that is, hardens within a few minutes after stirring. For this reason, it is necessary to complete the work in about 2 minutes after stirring until extraction to the affected area.
In addition, although "bone cement" was illustrated as a material, it is not limited to this. Moreover, although the medical use of orthopedics, dentistry, etc. was illustrated as a use of a material, it is not limited to this, You may use for a foodstuff, a cement industry, etc. Further, it is sufficient if the material has viscosity. (1) Originally, a material having viscous resistance and a material having no viscous resistance are mixed, and the viscosity resistance is not increased by stirring. As in the case of a certain material, a material having viscosity may be mixed and stirred to lower the viscosity resistance. (3) When one material is stirred, the viscosity resistance may be increased or decreased.

As shown in FIG. 1, the stirring device 10 is roughly composed of the following parts.
The following (1) to (7) will be described later.
(1) Container 20
(2) Stirring blade 30
(3) Lid 40
(4) Operation unit 50
(5) Connecting part 60
(6) Inner lid 70
(7) First to third seal members 80 to 100
The parts of the stirring device 10 are not limited to the above (1) to (7), and the first to third seal members 80 to 100 may be omitted, for example.

(Container 20)
As shown in FIGS. 2, 6, 7 and 15, the container 20 has an opening 21 for storing bone cement and a storage chamber 22 for storing the bone cement inserted from the opening 21.
The container 20 is formed in a cylinder shape, for example, a cylindrical shape, and has one opening surface as an opening portion 21 and the other opening surface is closed with a bottom portion 200 to be described later as shown in FIGS.
The container 20 is integrally formed of a thermoplastic resin having sufficient strength to withstand the stirring and extraction of the bone cement by the stirring blade 30 and having chemical resistance. The container body 30 is integrally formed of a transparent resin so that the stirring state of the bone cement can be observed.

As shown in FIGS. 2, 6, 7, and 15, the container 20 roughly includes the following parts.
In addition, each part of the container 20 is not limited to each part of following (1)-(3), For example, the inclination part 24 is also omissible.
(1) Locking part 23
The locking portion 23 is intermittently formed in a rail shape on the outer periphery of the opening 21. The locking portion 23 is for engaging with a claw-like engaging portion 42 described later of the lid portion 40 and fixing the lid portion 40 to the opening portion 21 of the container 20.
(2) Inclined part 24
The inclined portion 24 advances the lid 40 toward the container 20 when the lid 40 is rotated with respect to the outer peripheral portion. The inclined portion 24 is formed continuously with the rail-like locking portion 23, and is inclined obliquely with respect to the forward direction. The inclined portion 24 engages with a claw-like engaging portion 42 described later of the lid portion 40, and when the lid portion 40 is rotated, the lid portion 40 is advanced toward the container 20.

(3) Recess 25
The recess 25 is located at the outer edge of the opening 21 and is formed in an annular groove shape. The concave portion 25 is for fixing the inner lid 70 to the opening 21 of the container 20 by elastically fitting a claw-shaped convex portion 75 (described later) of the inner lid 70.

(Stirring blade 30)
As shown in FIGS. 3, 13, and 15, the stirring blade 30 is inserted into the storage chamber 22 through the opening 21 and stirs the bone cement in the storage chamber 22. The stirring blade 30 is formed integrally with a thermoplastic resin having sufficient strength to withstand the stirring of the bone cement and having chemical resistance.
As shown in FIG. 3, the stirring blade 30 is roughly composed of the following parts.
The following (1) and (2) will be described later.
(1) Wing body 210
(2) Receiver 220

(Cover 40)
As shown in FIGS. 4, 8, 13 and 15, the lid 40 is detachable for closing the opening 21 of the container 20. The lid 40 is formed in a cap shape that can be put on the outer periphery of the opening 21 of the container 20. Similar to the container 20, the lid 40 has chemical resistance and is integrally formed of a transparent resin so that the stirring state of the bone cement can be observed from above.

As shown in FIGS. 4 and 8, the lid part 40 has the following parts.
(1) Through hole 41
The through hole 41 is located in the center of the upper surface of the lid portion 40, penetrates up and down, and is formed in a circular shape. A connection pin 260 (described later) of the operation unit 50 passes through the through hole 41, and the operation unit 50 and the connection unit 60 are connected through the through hole 41.
(2) Engaging portion 42
The engaging portion 42 is formed in a claw shape on the inner peripheral surface of the skirt portion of the lid portion 40. The engaging portion 42 is for engaging with a rail-shaped locking portion 23 formed on the container 20 and fixing the lid portion 40 to the opening portion 21 of the container 20.
The engaging part 42 engages with the inclined part 24 protruding from the outer periphery when the cover part 40 is put on the outer periphery of the opening part 21 of the container 20 and the cover part 40 is rotated clockwise. When the lid portion 40 is further rotated, the engaging portion 42 moves while contacting the lower edge of the inclined portion 24, thereby moving the lid portion 40 forward toward the container 20. Further, when the lid part 40 is rotated, the engaging part 42 reaches the substantially horizontal engaging part 23 that continues to the inclined part 24, and the engaging part 23 is located immediately above, so that the cover part 40 is prevented from coming off. Is done.
In addition, the claw-like engagement portion 42 is provided on the lid portion 40, and the rail-like engagement portion 23 is provided on the container 20, but not limited thereto, the lid portion 40 is provided with a rail-like engagement portion, The container 20 may be provided with a claw-shaped engaging portion, and the engaging portion 42 is not limited to a claw shape, and the locking portion 23 is not limited to a rail shape.

(3) Exhaust port 43
The exhaust port 43 extends in a cylindrical shape laterally from the upper part of the lid part 40 and communicates with the inside and outside.
Although not shown, a pipe is connected to the exhaust port 43, and the pipe is connected to a decompression pump. The decompression pump is for decompressing the inside of the container 20.
The agitator 10 has a structure in which the inside of the container 20 is sealed and agitated while reducing the pressure for the purpose of removing bubbles and by-product organic gas in the bone cement.

(Operation unit 50)
As shown in FIGS. 4, 13, and 15, the operation unit 50 is connected to the stirring blade 30 through the lid 40 from the outside of the container 20, and rotates the stirring blade 30 in the storage chamber 22. Is.
As shown in FIG. 4, the operation unit 50 is roughly composed of the following parts.
The following (1) to (3) will be described later.
(1) Arm 250
(2) Connecting pin 260
(3) Handle 270

(Connecting part 60)
As shown in FIGS. 3, 4, and 15, the connecting portion 60 is located between the stirring blade 30 and the operation portion 50, and transmits the power of the operation portion 50 to the blade body 210 of the stirring blade 30. is there. The connecting portion 60 is integrally formed of a thermoplastic resin having appropriate elasticity and rigidity and having chemical resistance.
As shown in FIG. 3, the connecting part 60 is roughly composed of the following parts.
The following (1) and (2) will be described later.
(1) Tube part 230
(2) Ratchet 240

(Inner lid 70)
As shown in FIGS. 10, 11, 15, 17, and 18, the inner lid 70 is located between the lid 40 and the opening 21 and has an insertion groove 71 through which the stirring blade 30 can be inserted. The stirring blade 30 is inserted into the storage chamber 22 in a state where the stirring blade 30 is passed through the insertion groove 71, and the lid 40 is fixed to the opening 21 when the lid 40 is attached to the opening 21. Is removed from the opening 21, and when the stirring blade 30 is pulled out of the storage chamber 22, the bone cement adhering to the stirring blade 30 is scraped off. The inner lid 70 is integrally formed of a thermoplastic resin having appropriate elasticity and rigidity and having chemical resistance.
The inner lid 70 is formed in a disk shape having an outer diameter equal to or smaller than the inner diameter of the opening 21 of the container 20 and fits into the opening 21.

As shown in FIGS. 10 and 11, the inner lid 70 has the following parts when roughly classified.
(1) Insertion groove 71
The insertion groove 71 penetrates up and down and allows the stirring blade 30 to pierce. The insertion groove 71 is located in the center, and is composed of a circular portion through which a shaft portion 211 (described later) of the stirring blade 30 passes, and a thin groove portion that communicates with the circular portion and through which a blade portion 212 (described later) of the stirring blade 30 passes. The outer diameter and the width are substantially equal to the cross-sectional shapes of the shaft portion 211 and the wing portion 212.
(2) Frame 72
The frame portion 72 borders the insertion groove 71 and comes into contact with the bone cement adhering to the periphery of the stirring blade 30 to scrape off the bone cement.

(3) Passage 73
The passage port 73 allows the bone cement after stirring to pass after extraction of the stirring blade 30 from the insertion groove 71 during extraction. A pair of passage openings 73 are formed adjacent to the insertion groove 71 and are formed in a fan-shaped hole shape penetrating vertically. Note that when the bone cement passes through the passage port 73, the bone cement also passes through the insertion groove 71.
(4) Outer fitting part 74
The outer fitting portion 74 has a larger diameter than the inner diameter of the opening portion 21 of the container 20 and is formed in a skirt shape that projects in an annular shape from the upper surface of the inner lid 70 and is fitted on the outer periphery of the opening portion 21. The outer fitting portion 74 functions as a facing portion that faces the outer peripheral portion of the container 20 constituting the opening 21.

(5) Convex part 75
The convex portion 75 is located in the outer fitting portion 74, is formed in an annular groove shape on the outer edge portion of the opening portion 21, is fitted into the concave portion 25 elastically, and fixes the inner lid 70 in the opening portion 21. . The convex portions 75 are formed in a claw shape that elastically fits into the annular groove-shaped concave portion 25 due to the elasticity of the resin, and a plurality of convex portions 75, for example, a total of three are provided at 120 degree intervals.
The inner lid 70 is fixed to the opening 21 of the container 20 and supported rotatably in the opening 21 of the container 20 with the claw-shaped protrusion 75 fitted in the annular groove-shaped recess 25. Is done. That is, when the stirring blade 30 inserted in the insertion groove 71 rotates, the inner lid 70 rotates integrally with the stirring blade 30.
In addition, although the convex portion 75 is configured to elastically fit into the concave portion 25, the present invention is not limited thereto, and for example, a structure that fits in a sliding manner without having “elasticity” may be employed. In addition, the inner lid 70 is provided with a claw-like convex portion 75 and the container 20 is provided with a groove-like convex portion 75. A claw-shaped convex portion may be provided, and the convex portion 75 is not limited to the claw shape, and the convex portion 75 is not limited to the groove shape. Furthermore, the inner lid 70 is configured to be rotatable integrally with the stirring blade 30, but is not limited to this, for example, by making the cross-sectional shape of the portion of the stirring blade 30 passing through the insertion groove 71 circular, It is good also as a structure which 70 does not need to rotate.

(First to third seal members 80-100)
As shown in FIGS. 2 and 15, the first seal member 80 seals between the opening 21 and the lid 40 of the container 20, and a rubber O-ring is used.
As shown in FIGS. 4 and 15, the second seal member 90 seals between the through hole 41 of the lid portion 40 and a cylinder portion 230 described later of the connecting portion 60, and a rubber O-ring is provided. It is used.
The third seal member 100 seals between the through hole 41 of the lid portion 40 and a connecting pin 260 (described later) of the operation portion 50, and a rubber O-ring is used.

(Bottom 200)
As shown in FIGS. 2, 15, 17, and 18, the bottom portion 200 closes the open bottom surface of the container 20. The bottom 200 is a so-called piston that is inserted from the open bottom surface of the container 20 and can move in the storage chamber 22 of the container 20 from the bottom surface toward the opening 21, and pushes the bone cement after stirring from the opening 21. Function as. The bottom portion 200 is formed in a substantially disc shape, and is integrally formed of a thermoplastic resin having appropriate elasticity and rigidity and having chemical resistance.

As shown in FIG. 2, the bottom 200 is roughly composed of the following parts.
(1) Bearing part 201
The bearing portion 201 is located at the center of the circular inner surface facing the storage chamber 22, and is recessed in a cylindrical shape. A tip end portion of a shaft portion 211 (described later) of the stirring blade 30 is fitted into the bearing portion 201, and the stirring blade 30 turns around the bearing portion 201.
(2) Annular edge 202
The annular edge portion 202 protrudes from the outer periphery of the bottom portion 200 into an annular fin shape having a diameter larger than the inner diameter of the storage chamber 22. The annular edge 202 elastically contacts the inner periphery of the storage chamber 22, seals the open bottom surface of the container 20, and moves in the storage chamber 22 while maintaining the sealed state.

(Wing body 210)
As shown in FIGS. 3, 5, 13, and 15, the wing body 210 is located in the storage chamber 22 of the container 20 and agitates bone cement in the storage chamber (22).
As shown in FIG. 3, the wing body 210 is roughly composed of the following parts.
(1) Shaft 211
The shaft portion 211 is positioned at the center of the wing body 210 and extends in a columnar shape in the full length direction of the storage chamber 22 of the container 20. The shaft portion 211 has a distal end portion fitted in the bearing portion 201 of the bottom portion 200 and is held so as to be rotatable in the storage chamber 22 around the bearing portion 201.
(2) Wing 212
The wing portion 212 extends radially from the shaft portion 211 and is formed in a plate shape, and turns around the shaft portion 211 in the storage chamber 22.

(3) Notch 213
The notch 213 penetrates in the front and back direction of the plate-like wing 212, and a plurality of the notches 213 are provided at a predetermined interval in the full length direction of the storage chamber 22 of the container 20, and are formed in a substantially rectangular shape. The notch 213 allows passage of the bone cement when the bone cement is agitated, and distributes the load on the wing body 210. Note that the notch 213 may be omitted.
(4) Projection 214
The protrusion 214 prevents the inner lid 70 from falling off when the stirring blade 30 is inserted into the insertion groove 71 of the inner lid 70, and constitutes a drop-off preventing means. As shown in FIG. 13, the protrusion 214 is located above the wing body 210 and protrudes in a hemispherical shape.
The protrusion 214 is exemplified as the drop-off preventing means, but is not limited thereto, and for example, a frictional resistance between the outer surface of the stirring blade 30 and the inner surface of the insertion groove 71 of the inner lid 70 may be used. Alternatively, a clip-like elastic piece may be provided on one of the stirring blade 30 and the inner lid 70, and the inner lid 70 may be prevented from falling off by the elastic piece. Further, although the protrusion 214 protrudes from the wing body 210, the present invention is not limited to this. For example, a protrusion may be formed in the insertion groove 71 of the inner lid 70, and the shape of the protrusion 214 is a hemisphere. Although the shape is illustrated, it may be formed in a block shape such as a cube.

(Receiving part 220)
As shown in FIGS. 3, 5, 9 (b), 13 and 15, the receiving part 220 is located at one end of the wing body 210 and is connected to the operating part 50 via the connecting part 60. The receiving part 220 is formed in a flat ring shape having an open upper surface and a closed bottom.

As shown in FIGS. 3 and 9B, the receiving unit 220 is roughly composed of the following units.
(1) Internal teeth 221
The internal teeth 221 are located on a ring-shaped inner peripheral surface and are formed in a triangular concave-convex internal gear shape. The internal teeth 221 are used to transmit the power of the operation unit 50 by engaging a pawl portion 241 (described later) of the ratchet 240 from the inner peripheral side.

(2) Direct connection 222
The direct connection portion 222 is located at the center of the circular bottom of the receiving portion 220 and is recessed in a cylindrical shape. In the direct connection portion 222, longitudinal grooves extending in the depth direction are formed in the inner peripheral surface at predetermined intervals in the inner peripheral direction. As shown in FIG. 16, the operating portion 50 is directly connected to the stirring blade 30 via the connecting pin 260 by fitting the tip of the shaft portion of the direct connecting portion 222 into the direct connecting portion 222.
(3) Vent 223
The vent hole 223 penetrates the bottom of the receiving part 220 up and down, and allows air bubbles and by-product organic gas in the bone cement in the container 200 to flow. The vent holes 223 are formed in a substantially arc shape, and a plurality of, for example, a total of four vent holes are provided at intervals of 90 degrees.

(Cylinder part 230)
As shown in FIGS. 3, 4, 9 (a), and 15, the cylindrical portion 230 is located on the upper side of the connecting portion 60 and is formed in a cylindrical shape penetrating vertically. The cylindrical portion 230 has an outer diameter set to be equal to or smaller than the inner diameter of the through hole 41 of the lid portion 40, protrudes to the outside through the through hole 41, and is connected to an arm 250 (to be described later) of the operation portion 50.

As shown in FIG. 3 and FIG. 9A, the cylindrical portion 230 has the following portions.
(1) Center hole 231
The center hole 231 is formed in a non-circular shape, for example, a square inscribed in the circular through hole 41 of the lid portion 40. A connecting pin 260 (described later) of the operation unit 50 is fitted into the center hole 231 through the through hole 41 of the lid unit 40, and the power of the operation unit 50 is transmitted.

(Ratchet 240)
As shown in FIGS. 3, 4, 9 (a), and 15, the ratchet 240 includes a pawl portion 241 that engages with the internal teeth 221 of the stirring blade 30, and In addition to being transmitted to the stirring blade 30, when the bone cement exceeds a predetermined viscous resistance due to stirring, the transmission of power is cut off.
The ratchet 240 is formed in a leaf spring shape projecting from the outer periphery of the cylindrical portion 230 into a substantially C-shaped plane, and is formed as a pair separated from each other in the diameter direction of the cylindrical portion 230.

As shown in FIGS. 3 and 9A, the ratchet 240 has the following parts.
(1) Pawl 241
The pawl portion 241 is formed in an arc shape that protrudes from the center of the substantially C-shaped plane and fits into one of the internal teeth 221 of the stirring blade 30.
The pawl portion 241 is formed in an arc shape so that it can easily idle and generate a click feeling and a clicking sound with respect to the triangular uneven inner teeth 221.

(2) Elastic deformation part 242
The elastic deformation portions 242 are located on both sides of the pawl portion 241 and each end portion is connected to the outer periphery of the cylindrical portion 230 in an arm shape. The elastic deformation part 242 is formed in a plate shape, and elastically protrudes the pawl part 241 toward one of the internal teeth 221 of the stirring blade 30 using the elasticity of the resin.
That is, when the bone cement exceeds a predetermined viscous resistance by stirring, the rotational resistance of the stirring blade 30 is increased, and the elastic deformation portion 242 is set to bend against the rotational resistance. As a result, the ratchet 240 idles in the receiving unit 220, the power of the operation unit 50 is not transmitted to the stirring blade 30 via the connecting unit 60, the rotation of the stirring blade 30 stops, and the stirring of the bone cement stops .
(3) The bulging part 243
The bulging portion 243 projects in a semicircular shape from the inner surface of the elastic deformation portion 242 facing the outer peripheral surface of the cylindrical portion 230. When the elastic deformation portion 242 is bent more than necessary, the bulging portion 243 is brought into contact with the outer peripheral surface of the cylindrical portion 230 to prevent the ratchet 240 from being damaged.

(Arm 250)
As shown in FIGS. 4, 13 and 15, the arm 250 is formed in a horizontally long plate shape, and is non-rotatably connected to the connecting portion 60 via a connecting pin 260 at one end and a handle at the other end. 270 is rotatably supported. The arm 250 is integrally formed of a resin having an appropriate rigidity.

The arm 250 has the following parts as shown in FIGS.
(1) Pin holder 251
The pin receiver 251 is located at one end of the arm 250 and penetrates up and down in a non-circular shape. In the pin receiver 251, the distal end portion of the cylindrical portion 230 of the connecting portion 60 that protrudes outside through the through hole 41 of the lid portion 40 is elastically fitted from below and cannot be removed. Further, the shaft portion of the connecting pin 260 is inserted from the upper side through the center hole 231 of the cylindrical portion 230 fitted in the pin receiver 251.
(2) Handle receiver 252
The handle receiver 252 is located at one end of the arm 250 and penetrates in a circular shape up and down. The handle 252 is supported rotatably so that the shaft portion of the handle 270 fits in from the upper side and cannot be removed.

(Connecting pin 260)
As shown in FIGS. 4, 13, 15 and 16, the connecting pin 260 is inserted from the pin receiver 251 of the arm 250 and communicates the arm 250 and the connecting portion 60 in a non-rotatable manner. The connecting pin 260 is integrally formed of a resin having an appropriate rigidity.
The connecting pin 260 includes a head having an outer shape larger than the inner shape of the central hole 231 of the cylindrical portion 230 of the connecting portion 60, and a shaft having an outer shape that is suspended from the head and conforms to the inner shape of the square central hole 231. It consists of a part. The shaft portion is formed in a square cross section adapted to the inner shape of the center hole 231 and rotates integrally with the connecting portion 60.
As shown in FIG. 16, the distal end portion of the shaft portion protrudes toward the stirring blade 30 when being pushed into the center hole 231. An outer tooth that engages with a longitudinal groove formed on the inner periphery of the direct coupling portion 222 of the stirring blade 30 is formed at the protruding tip portion of the shaft portion, and when the connecting pin 260 is pushed in, the operation portion 50 and the stirring blade Connect 30 directly.

(Handle 270)
As shown in FIGS. 4, 13, and 15, the handle 270 is inserted from the handle receiver 252 of the arm 250 and is rotatably supported by the arm 250. The handle 270 is integrally formed of a resin having an appropriate rigidity.
The handle 270 has a larger diameter than the inner diameter of the handle receiver 252 and is composed of a head that can be picked up by a finger and a shaft portion that hangs down from the head and has an outer diameter equal to or smaller than the inner diameter of the handle receiver 252. The shaft is formed in a cylindrical shape, cut from the lower end, passes through the cylindrical handle receiver 252 of the arm 250, and can be rotated with one touch to the handle receiver 252 by expanding the diameter after passing. Supported by

(Funnel 110 shown in FIG. 12)
As shown in FIGS. 12 and 14, the funnel 110 is for charging powder and liquid agent, which are bone cement materials, into the storage chamber 22 from the opening 21 of the container 20. The funnel 110 is integrally formed of a thermoplastic resin having chemical resistance.
The funnel 110 is provided with a pair of attachment portions 111 for inserting the tip portion narrowed into a truncated cone shape into the opening 21 of the container 20 and being fitted around the annular groove on the outer periphery of the opening 21. .

(Lid unit 120 shown in FIG. 13)
As shown in FIG. 13, the lid unit 120 has a stirring blade 30, an operation unit 50, a connecting unit 60, an inner lid 70, a second lid, a second, Three seal members 90 and 100 are assembled in advance.
The blade main body 210 of the stirring blade 30 is inserted from the tip portion in accordance with the insertion groove 71 of the inner lid 70. The inner lid 70 is slid toward the receiving portion 220 along the wing body 210. In the middle of the slide, the protrusion 214 (falling prevention means) of the wing body 210 and the frame portion 72 that borders the insertion groove 71 abut. Here, when the inner lid 70 is further slid, the insertion groove 71 is expanded by being pushed by the protruding portion 214 and is restored by overcoming the protruding portion 214, so that the inner lid 70 does not fall out of the wing body 210.

The ratchet 240 of the connecting portion 60 is fitted into the receiving portion 220 of the stirring blade 30, and the inner teeth 221 of the receiving portion 220 and the pawl portions 241 of the ratchet 240 are engaged.
A second seal member 90 is attached to the cylindrical portion 230 of the connecting portion 60, and is inserted from the inside of the lid portion 40 along the through hole 41, and partially protrudes from the through hole 41.
On the other hand, the operation unit 50 is assembled by inserting the shaft portion of the handle 270 in accordance with the handle receiver 252 of the arm 250.

Then, the cylindrical portion 230 of the connecting portion 60 partially protruding from the through hole 41 of the lid portion 40 is inserted from the lower side according to the pin receiver 251 of the arm 250.
The third seal member 100 is attached to the connection pin 260 and the connection pin 260 is inserted from above in accordance with the center hole 231 of the tube portion 230 of the connection portion 60 located in the pin receiver 251 of the arm 250.
Thereby, the operation part 50 and the connection part 60 are connected through the through-hole 41 of the cover part 40, and also the stirring blade 30, the inner cover 70, and the second and third seal members 90 and 100 are attached to form the cover unit 120. .

(Assembly of container 20)
As shown in FIGS. 15, 17, and 18, the container 20 is sealed by inserting a bottom portion 200 inside the container 20 according to the open bottom surface. A first seal member 80 is attached to the outer periphery of the opening 21 of the container 20.

(Nozzle 300 shown in FIG. 19)
The nozzle 300 is attached to the opening 21 of the container 20 as shown in FIGS. 19 and 20 after the bone cement is stirred and the lid unit 120 excluding the inner lid 70 is removed. Used for extraction.

As shown in FIG. 19, the nozzle 300 includes the following parts when roughly classified.
(1) Cap 310
The cap 310 can be screwed and fixed to the outer periphery of the opening 21 of the container 20, similarly to the lid 40. The cap 310 is integrally formed of a thermoplastic resin having chemical resistance.
(2) Nozzle body 320
The nozzle body 320 is attached to the cap 310, extends in a straw shape, and extracts the bone cement after stirring from the container 20 to the outside. Similar to the cap 310, the nozzle body 320 is integrally formed of a thermoplastic resin having chemical resistance.

(Gun 400 shown in FIG. 20)
As shown in FIG. 20, the gun 400 is used to push out the bone cement in the container 20 toward the affected part (not shown) during the operation by loading the container 20 with the nozzle 300 attached thereto. is there.
The gun 400 has a holding portion 410 that holds the container 20 with the nozzle 300 attached thereto, and a lever that pushes the bone cement after stirring in the storage chamber 22 from the nozzle 300 by pushing the piston-shaped bottom portion 200 into the container 20. 420.

(how to use)
A method of using the stirring device 10 having the above configuration will be described.
A method of using the stirring device 10 will be described in the following steps.
(1) Input process (2) Sealing process (3) Agitation process (4) Process for scraping bone cement (5) Extraction process (6) Options for mixing process

(Input process)
With the bottom 200 attached to the open bottom of the container 20 and hermetically sealed, as shown in FIG. 14, the powder and the liquid agent, which are bone cement materials, are transferred to the opening 21 of the container 20 using a funnel 110. Into the storage room 22.

(Sealing process)
After the introduction of the bone cement material, the lid 40 of the lid unit 120 shown in FIG. 13 is attached from the opening 21 side of the container 20, and the opening 21 is sealed.
When the lid 40 is put on the outer periphery of the opening 21 of the container 20, the claw-like engaging part 42 engages with the rail-like locking part 23 located on the outer periphery of the opening 21 of the container 20.
When the container 20 is screwed in, the claw-like engaging part 42 of the lid part 40 engages with the inclined part 24 that is a part of the rail-like locking part 23 of the container 20, and the lid part 40 faces the container 20. And move forward.

At that time, the ceiling surface inside the lid portion 40 functions as a pressing portion that pushes the inner lid 70 into the opening 21 of the container 20. For this reason, the inner lid 70 is fitted into the opening 21 of the container 20, and at this time, the claw-like convex portion 75 of the inner lid 70 is formed in an annular groove shape on the outer edge portion of the opening 21, and is formed in the concave portion 25. The inner lid 70 is fixed in the opening 21 by being elastically fitted. In addition, the claw-like convex portion 75 can make a clicking sound in the groove-like concave portion 25, and can give a click feeling to the operator who screws the lid portion 40, giving a sense of moderation.
At the same time, the claw-like engaging portion 42 of the lid portion 40 is locked to the rail-like engaging portion 23 located on the outer periphery of the opening 21 of the container 20, and the lid portion 40 is fixed to the container 20.

(Stirring process)
In order to stir the bone cement charged into the container 20, the operation unit 50 may be swung while the container 20 is held so as not to rotate.
At this time, a pipe connected to a decompression pump (not shown) is connected to the exhaust port 43 of the lid 40 to decompress the inside of the container 20.
When the operation unit 50 is swung, the stirring blade 30 is swung in the storage chamber 22 of the container 20 through the connecting unit 60 to stir the bone cement.
At this time, the inner lid 70 rotates integrally with the stirring blade 30.
When the bone cement exceeds a predetermined viscous resistance due to stirring, the rotational resistance of the stirring blade 30 increases, and the elastic deformation portion 242 bends against the rotational resistance, so that the ratchet 240 idles in the receiving portion 220. At this time, since the teeth of the inner teeth 221 are overcome, a click feeling is transmitted to the operation unit 50, and a click sound is generated by the pawl portions 241 hitting the teeth of the inner teeth 221.
For this reason, it is possible to notify the operator that the bone cement has reached a predetermined hardness.

(Process to scrape bone cement)
After completion of the stirring process, the locked state is released when the lid 40 is further turned. When the lid 40 is raised after unlocking, the inner lid 70 remains fixed in the opening 21 of the container 20. When the lid 40 is raised, the blade body 210 of the stirring blade 30 is raised while passing through the insertion groove 71 of the inner lid 70 fixed in the opening 21 of the container 20.
At this time, since the insertion groove 71 is formed to have an outer diameter and a width that are substantially equal to the cross-sectional shapes of the shaft portion 211 and the blade portion 212 of the blade body 210, the stirring blade 30 The bone cement adhering to the surroundings contacts and the bone cement is scraped off.
The lid 40 is collected as a lid unit 120 shown in FIG. At this time, the inner lid 70 remains fixed in the opening 21 of the container 20.

(Extraction process)
After the collection of the lid unit 120, a nozzle 300 is mounted on the outer periphery of the opening 21 of the container 20 from which the lid 40 has been removed, as shown in FIG. 19, and then, as shown in FIG. To load.
After loading, the piston-shaped bottom 200 is pushed into the container 20 by operating the lever 420 of the gun 400. For this reason, the bone cement in the container 20 passes through the insertion groove 71 and the passage port 73 of the inner lid 70, and is pushed out and extracted toward the affected part (not shown) during the operation through the nozzle 300. .

(Option of stirring process)
Next, as an option for the stirring process, as shown in FIG. 16, the operation unit 50 and the stirring blade 30 can be directly connected by pushing the connecting pin 260 toward the container 20.
That is, when the connecting pin 260 is pushed in, the tip portion of the shaft portion fits into the direct connection portion 222 of the stirring blade 30. For this reason, the operating portion 50 and the stirring blade 30 are rotated integrally by engaging the external teeth at the tip of the connecting pin 260 and the vertical groove formed in the inner periphery of the direct connecting portion 222. The ratchet 240 of the part 60 stops functioning.
An operator who rotates the operation unit 50 can freely set the hardness of the bone cement according to the rotation amount and time of the operation unit 50, and is particularly suitable when the hardness is higher than the set hardness.

10 Stirrer
20 Container 21 Opening
22 Storage room 23 Locking part
24 Inclined part 25 Concave part
30 stirring blade
40 Lid 41 Through-hole
42 Engagement 43 Exhaust port
50 Operation part 60 Connection part
70 Inner lid 71 Insertion groove
72 Frame 73 Passage
74 External fitting part 75 Convex part
80 First seal member 90 Second seal member
100 Third seal member
110 Funnel 111 Mounting part
120 Lid unit 200 Bottom
201 Bearing 202 Ring edge
210 Wing body
211 Shaft 212 Wings
213 Notch 214 Projection
220 Receiver 221 Internal teeth
222 Direct connection 223 Vent
230 Tube 231 Center hole
240 Ratchet 241 Pawl
242 Elastic deformation part 243 Swelling part
250 arms
251 Pin holder 252 Handle holder
260 Connecting pin 270 Handle
300 nozzles
310 Cap 311 Engagement part
320 Nozzle body 400 Gun
410 Holding part 420 Lever

Claims (5)

In a stirrer that stirs the material,
A container having an opening for storing the material and a storage chamber for storing the material put in from the opening;
A stirring blade inserted into the storage chamber from the opening and stirring the material in the storage chamber;
A detachable lid for closing the opening;
An operation unit that penetrates the lid from the outside of the container and is connected to the stirring blade, and rotates the stirring blade in the storage chamber,
Between the lid and the opening,
When the stirring blade is inserted into the storage chamber in a state where the stirring blade is passed through the insertion groove, and the lid portion is attached to the opening, An inner lid that is fixed to the opening, removes the lid from the opening, and scrapes off the material adhering to the stirring blade when the stirring blade is pulled out of the storage chamber ;
Between the stirring blade and the operation unit,
A connecting portion for transmitting the power of the operation portion to the stirring blade;
In the connecting part,
The power of the operation unit is transmitted to the stirring blade, and when the bone cement constituting the material exceeds a predetermined viscous resistance by stirring, the ratchet includes a ratchet that blocks transmission of power.
A mixing device characterized by that. In the inner lid,
The stirring device according to claim 1, wherein a passage port through which the material after stirring can pass is provided. In the inner lid,
Having a facing portion facing the outer peripheral portion of the container constituting the opening,
Between the outer peripheral portion and the facing portion,
A recess,
The stirrer according to claim 1, wherein a convex portion that fits into the concave portion is provided for each. Between the stirring blade and the inner lid,
The stirrer according to any one of claims 1 to 3, further comprising a drop prevention means for preventing the inner lid from falling off in a state where the stirring blade is inserted into the insertion groove. Between the lid and the outer periphery,
A locking part;
An engagement portion that is locked to the locking portion is provided for each,
Between the locking portion and the engaging portion,
When the lid portion is rotated with respect to the outer peripheral portion, an inclined portion that advances the lid portion toward the container is provided,
Between the lid and the inner lid,
The stirring device according to claim 3, further comprising: a pressing portion that presses the concave portion so that the convex portion fits into the concave portion when the lid portion moves forward by the inclined portion.

Images