JP2008017994A - Delivery device for filling material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a plunger from jumping out in the final delivery stage of a filling material inside a container and to prevent the scattering of the filling material and an impact to a lesion. <P>SOLUTION: The delivery device 1 for filling material comprises an outer cylinder 2 in a straight tube shape opened at both ends for housing the filling material including a porous material and the plunger 4 inserted into the outer cylinder 2 from an opening 2b at the rear end of the outer cylinder 2. The plunger 4 comprises a gasket 4b arranged inside the outer cylinder 2 in the state of being compressed in a radial direction and a stopper 12 to be abutted to the rear end of the outer cylinder 2 when the distal end face of the gasket 4b is arranged at the almost distal end of the outer cylinder 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a filling material filling device for filling an affected area with a filling material containing a porous material.

Conventionally, there exists a compensation apparatus shown by patent document 1 as this kind of instrument, for example.
This filling device is a syringe-like device in which one end of a substantially cylindrical container containing a filling material made of a porous material is sealed with a movable plunger, and the other end is closed with a removable cap. Yes. A puncture needle is attached to the cap.

According to this filling device, a filling material made of a porous material is stored in a container, a puncture needle attached to a cap is inserted into a medullary cavity such as an iliac bone, and the inside of the container is decompressed by pulling a plunger. A bodily fluid such as bone marrow fluid in the medullary cavity can be sucked into the container and mixed with the filling material accommodated in the container. In this state, the cap at the distal end of the container is removed and the plunger is pushed in, so that the mixture of the filling material and the body fluid in the container is pushed out of the container and filled in the bone defect or the like.
US Pat. No. 6,736,799

  In the filling device having the structure shown in Patent Document 1, in order to smoothly discharge the filling material inside the container, the tip of the container is opened to a straight tube without being squeezed like a barrel of a normal syringe. Yes. For this reason, when the plunger is pushed in and the filling material is completely discharged, the plunger tip jumps out from the opening of the container.

  However, a gasket made of an elastic material such as rubber is attached to the distal end of the plunger in order to discharge the body fluid in the container without leakage, and is inserted into the container in a radially compressed state. For this reason, if the tip of the plunger has a conventional structure that protrudes from the opening of the container, the compressed gasket will be restored vigorously, the filling material will be scattered, or the plunger will be ejected vigorously to the bone defect etc. There may be inconveniences such as giving an impact.

  The present invention has been made in view of the above-described circumstances, and can prevent the plunger from jumping out in the final stage of the filling of the filling material in the container, and can prevent the filling material from being scattered and the impact to the affected part in advance. The object is to provide a filling material filling device.

In order to achieve the above object, the present invention provides the following means.
The present invention comprises a straight tubular outer cylinder that is open at both ends for accommodating a filling material containing a porous material, and a plunger that is inserted into the outer cylinder from an opening at the rear end of the outer cylinder, The plunger includes a gasket disposed in the outer cylinder in a radially compressed state and a stopper that abuts against the rear end of the outer cylinder when the front end surface of the gasket is disposed substantially at the front end of the outer cylinder. A material filling device is provided.

  According to the present invention, the filling material in the outer cylinder is filled, and the plunger inserted from the opening at the rear end of the outer cylinder is pushed, whereby the filling material in the outer cylinder is discharged from the opening at the tip, To be compensated. Since the gasket is placed in the outer cylinder with the gasket compressed in the radial direction at the tip of the plunger, the gasket is brought into close contact with the inner surface of the outer cylinder, and even if liquid is contained in the filling material, It can be discharged without leaking and can be filled without waste.

  In this case, the stopper provided on the plunger hits the rear end of the outer cylinder when the front end surface of the gasket is disposed at the substantially end of the outer cylinder. Accordingly, all of the filling material stored in the outer cylinder can be discharged, and further pushing of the plunger is prohibited, so that the compressed state of the gasket is prevented from being suddenly released. As a result, it is possible to prevent scattering of the filling material due to restoration of the gasket and application of impact to the affected area.

  In the above-mentioned invention, a lid member that is detachably attached to the distal end of the outer cylinder, seals the opening at the distal end, and has a tapered inner surface that gradually widens toward the distal end is provided at the opening at the distal end of the outer cylinder. The lid member may be provided with a tapered surface that comes into close contact with the tapered inner surface when attached to the outer cylinder.

  By doing in this way, an outer cylinder can be easily sealed with a cover member only by sticking the taper surface of a cover member to the taper inner surface of an outer cylinder. In this case, when the plunger gasket reaches the taper inner surface provided at the tip of the outer cylinder, the gasket to be restored radially outwardly moves in a direction of protruding from the opening by sliding on the taper inner surface. According to the present invention, since the movement of the plunger is limited by the stopper, the gasket can be prevented from suddenly popping out even if the tapered inner surface is provided.

In the above invention, the lid member is provided with an inlet that communicates with the inside and outside of the outer cylinder in a state attached to the tip of the outer cylinder, and is detachably attached to the inlet. It is good also as providing the cap which seals.
By doing so, the cap can be removed from the inlet of the lid member attached to the tip of the outer cylinder, and liquid such as body fluid can be easily injected into the outer cylinder from the opened inlet. After the liquid is injected, the cap is attached to the injection port again, so that the injection port can be sealed and the filling material in the outer cylinder can be held so as not to leak.

In the above invention, the inlet is provided with a tapered inner surface that gradually expands in the opening direction, and the cap is provided with a tapered surface that is in close contact with the tapered inner surface when attached to the inlet. It is good to be.
By doing in this way, the taper inner surface of an inlet and the taper surface of a cap can be stuck, and an inlet can be sealed easily. In place of the cap removed from the injection port, when another syringe is inserted into the injection port, the injection port of the syringe is brought into close contact with the tapered surface of the injection port to inject the liquid into the outer cylinder without leakage. Is possible.
In the above invention, the porous material may be made of a calcium phosphate ceramic material.

  According to the present invention, it is possible to prevent the plunger from popping out in the last stage of filling of the filling material in the container, and to prevent the filling material from being scattered and impacting the affected area.

A filling material filling device 1 according to an embodiment of the present invention will be described below with reference to FIGS.
As shown in FIG. 1, a filling material filling device 1 according to the present embodiment is a syringe-like filling device, and includes a straight tubular barrel (outer tube) 2 that opens at both ends, and one end of the barrel 2. A connector (lid member) 3 detachably attached and a plunger 4 inserted from the other end of the barrel 2 are provided.

  The barrel 2 includes a front end opening 2a and a rear end opening 2b. A male screw 5 is formed on the outer surface of the tip opening 2a. A tapered inner surface 2d that gradually spreads from the cylindrical inner surface 2c of the barrel 2 toward the opening direction is provided at the distal end portion of the inner surface of the distal opening 2a. A flange 6 for placing a finger when operating the plunger 4 is provided outside the rear end opening 2b so as to protrude in the radial direction. In addition, an annular protrusion 2e that protrudes inward in the radial direction over the entire circumference and a tapered inner surface 2f that gradually expands from the annular protrusion 2e in the opening direction are provided at the tip of the inner surface of the rear end opening 2b. .

The barrel 2 is made of a transparent material, for example, polypropylene.
The material of the barrel 2 is not limited to this, and is preferably made of a material having a hardness higher than that of polypropylene, for example, a cyclic polyolefin resin or a polycarbonate resin. Alternatively, the cylindrical inner surface 2c of the polypropylene barrel 2 may be subjected to a surface treatment such as diamond coating or DLC coating.

  As shown in FIG. 2, the connector 3 includes a female screw 7 that is fastened to a male screw 5 provided on the outer surface of the tip opening 2 a of the barrel 2, and the female screw 7 is sufficiently connected to the male screw 5 of the barrel 2. In a fastened state, a tapered surface 3a that is in close contact with the tapered inner surface 2d provided on the inner surface of the distal end opening 2a of the barrel 2, and an injection port that communicates with the inner space of the barrel 2 while being attached to the distal end opening 2a of the barrel 3b and a cap 8 that is detachably attached to the inlet 3b.

The injection port 3b has a tapered inner surface 3c that gradually expands in the opening direction in order to facilitate attachment / detachment of the injection port 9a of another syringe 9 (see FIG. 5B) and to attach the injection port 9a in a sealed state. .
The cap 8 has a tapered surface 8a shaped so as to be in close contact with the tapered inner surface 3c of the injection port 3b, and the tip 8b of the cap 8 is attached to the injection port 3b of the connector 3 attached to the barrel 2. 2 has a length dimension extending to a position reaching almost the tip position. The tip 8b of the cap 8 has a shape that does not have a recess, and is configured so that the filling material A filled in the barrel 2 does not enter the injection port 3b, as will be described later.

  The plunger 4 includes a rod-like plunger body 4a inserted from the rear end opening 2b of the barrel 2, and a gasket 4b attached to one end of the plunger body 4a and slidably inserted into the barrel 2. ing. The other end of the plunger body 4a is provided with an operation portion 13 that is operated when the plunger 4 is pushed and pulled. The operation part 13 is formed in a flange shape protruding outward in the radial direction.

  The gasket 4b is made of an elastically deformable elastomer material, has an outer diameter that is slightly larger than the inner diameter of the barrel 2, and as shown in FIG. To be inserted. As a result, the outer peripheral surface of the gasket 4b is in close contact with the cylindrical inner surface 2c of the barrel 2 and can slide in the longitudinal direction in accordance with the operation of the plunger body 4a while sealing between the barrel 2 and the gasket 2b. ing. A through hole 4c that penetrates along the axial direction is provided at the center of the gasket 4b.

  The plunger body 4a is made of a transparent material, for example, polypropylene. The plunger main body 4a is provided with through holes 4d that open at both ends in the longitudinal direction. Between the plunger main body 4a and the gasket 4b, a filter 10 is disposed at a position to close the front end opening of the through hole 4d. The rear end opening of the through hole 4d is opened at a substantially central position of the operation portion 13, and the operator can easily point the rear end opening of the through hole 4d when pushing the plunger 4 into the barrel 2. It can be closed with.

  The filter 10 is made of, for example, polyethylene terephthalate, and is formed in a mesh shape having communication holes of about 10 to 250 μm. Thereby, the filter 10 prohibits the passage of the filling material A and allows a fluid such as liquid or gas to flow.

  The plunger body 4a is provided with a plurality of engaging projections 11 projecting in the radial direction at intervals in the circumferential direction in the vicinity of the end where the gasket 4b is attached. These engaging projections 11 are arranged in the barrel 2 so as to get over the annular projection 2e provided in the rear end opening 1b of the barrel 2 when the plunger 4 is inserted into the barrel 2.

Thereby, when the plunger 4 is extracted from the barrel 2, the engaging protrusion 11 can be prevented from colliding with the annular protrusion 2e and being pulled out all at once.
The engaging protrusion 11 has a slope 11a gradually spreading outward in the radial direction toward the rear side in the longitudinal direction on the gasket 4b side, and the annular protrusion 2e can be easily climbed by the slope 11a.

  Further, the plunger main body 4a is provided with a flange-like stopper protrusion 12 protruding in the radial direction in the vicinity of the end where the operation portion 13 is provided. The stopper projection 12 hits the rear end of the barrel 2 when the plunger 4 is pushed into the barrel 2, and prevents the plunger 4 from further advancing. At this time, the front end surface of the gasket 4 b attached to the front end of the plunger 4 is arranged at a position slightly protruding from the front end opening 2 a of the barrel 2.

The operation of the filling material filling device 1 according to this embodiment configured as described above will be described below.
In order to fill the affected area with the filling material using the filling material filling device 1 according to the present embodiment, first, a filling material filling kit 20 as shown in FIG. 4 is configured. In a state where the plunger 4 is inserted from the rear end opening 2b of the barrel 2, the barrel-shaped filling material A is filled into the barrel 2 from the front end opening 2a of the barrel 2. The filling material A is, for example, a calcium phosphate porous body such as a β tricalcium phosphate porous body. The particle size of the filling material A is about 100 μm to 5 mm.

  According to the present embodiment, when the plunger 4 inserted into the barrel 2 is moved in the direction of pulling out from the barrel 2, the annular protrusion 2e provided on the inner surface of the rear end opening 2b of the barrel 2 and the gasket 4b of the plunger main body 4a are located in the vicinity. Since the provided engaging protrusion 11 abuts, the plunger 4 can be easily arranged at a position where the filling material A can be accommodated to the maximum extent. Further, it is possible to prevent the plunger 4 from being accidentally dropped from the rear end opening 2b of the barrel 2 during filling of the filling material A.

  Further, according to the present embodiment, the plunger body 4a is provided with the through hole 4d, and the air in the barrel 2 is discharged to the outside through the through hole 4d. Unlike the case where the liquid is sucked into the barrel by reducing the pressure, it is not necessary to leave a space for forming an air layer in the barrel 2. Therefore, there is an advantage that a large amount of the compensation material A can be accommodated by pulling the plunger 4 to the last end where the engaging protrusion 11 hits the annular protrusion 2e.

  Next, the connector 3 is attached to the front end opening 2a of the barrel 2 in a state where the filling of the filling material A into the barrel 2 is completed. Specifically, as shown in FIG. 5A, the female screw 7 of the connector 3 is fastened to the male screw 5 at the tip of the barrel 2, and the tapered surface 3 a provided on the connector 3 is changed to a tapered inner surface at the tip of the barrel 2. Adhere to 2d. At this time, the cap 8 is attached to the inlet 3 b of the connector 3. Thereby, the filling material filling kit 20 in a state in which the space in the barrel 2 sandwiched between the connector 3 and the plunger 4 is filled with the filling material A is configured.

Since the inlet 3 b of the connector 3 is sealed by the cap 8, the space in the barrel 2 communicates with the external space only through the through hole 4 d provided in the plunger 4.
In this case, according to the filling material filling device 1 according to the present embodiment, the tip 8b of the cap 8 in a state of sealing the inlet 3b of the connector 3 is arranged to extend to the tip of the barrel 2. Therefore, the filling material A filled in the barrel 2 is prevented from entering the injection port 3b. Therefore, as shown in FIG. 5B, when the cap 8 is removed and the injection port 9a of another syringe 9 is inserted into the injection port 3b, the internal filling material A becomes an obstacle to the insertion. The injection port 9a of the syringe 9 can be attached to the injection port 3b in a sealed state.

  The filling of the filling material A into the barrel 2 may be performed from the rear end opening 2b by first closing the front end opening 2a of the barrel 2 with the connector 3 with the cap 8. In this case, the plunger 4 may be inserted after the filling material A is filled in the barrel 2 leaving the accommodation space for the gasket 4b.

  Next, the space in the barrel 2 of the filling material filling kit 20 configured as described above is filled with a liquid such as bone marrow fluid B or blood collected from the patient (hereinafter also referred to as liquid B). In this case, as shown in FIG. 5B, the injection port 9a of another syringe 9 from which the bone marrow fluid B or the like is collected is inserted into the injection port 3b opened by removing the cap 8 of the connector 3. . At this time, the outer surface of the injection port 9a of the other syringe 9 is in close contact with the tapered inner surface 3c of the injection port 3b, thereby sealing between the two. Thereby, by pushing in the plunger (not shown) of the other syringe 9, the bone marrow fluid B or the like is injected into the barrel 2 of the filling material filling device 1 without leaking.

  When the bone marrow fluid B or the like is injected, the bone marrow fluid or the like B that has entered the barrel 2 comes into contact with the filling material A in the barrel 2 and penetrates there. In the space in the barrel 2 sandwiched between the connector 3 and the plunger 4, air is present in the gap of the filling material A. Therefore, when bone marrow fluid B is injected, as shown in FIG. The air G is pushed by the bone marrow fluid B and released to the outside from the through holes 4c and 4d of the plunger 4. Since the filter 10 is disposed at the tip opening of the through hole 4d, the filling material A cannot be passed through the filter 10 but is held in the barrel 2, and the air G and bone marrow fluid B pass through the filter 10. And enters the through hole 4d.

  When the air G is pushed by the bone marrow fluid B or the like and vigorously passes through the space between the filling materials A, bubbles may be generated. According to this embodiment, the generated bubbles are generated in the barrel 2. It is pushed into the through holes 4c and 4d through the filter 10 without staying in the space. That is, according to this embodiment, the filling material A can be sufficiently immersed in a liquid such as bone marrow fluid B without bubbles.

  In this case, in the filling material filling device 1 according to this embodiment, the through hole 4d is formed along the longitudinal direction of the plunger body 4a, and the plunger body 4a is made of a transparent material. Therefore, as shown in FIG. 7, when a part of the liquid such as bone marrow fluid B filled in the space in the barrel 2 sandwiched between the connector 3 and the plunger 4 enters the through hole 4 d through the filter 10. It can be visually observed from the outside that the liquid level moves in the through hole 4d toward the rear end portion of the plunger body 4a.

In particular, when the liquid B to be injected is a colored liquid such as bone marrow fluid or blood, the movement of the liquid surface can be clearly confirmed. Even if the liquid B is colorless and transparent, the movement of the liquid level can be confirmed by the difference in refractive index.
Therefore, the operator can easily confirm that the filling material A is sufficiently immersed in the liquid B by visually observing the liquid level of the liquid B moving in the through hole 4d. The filling operation can be stopped and the filling operation can be started.

  As shown in FIG. 8, the filling operation is performed by removing the connector 3 from the tip of the barrel 2, thereby opening the tip opening 2 a of the barrel 2, bringing the opened tip opening 2 a close to the affected part, and This is performed by pressing the operation unit 4b. By pushing the operating portion 13 of the plunger 4 and moving the gasket 4b toward the tip opening 2a in the barrel 2, the filling material A in which the liquid B such as bone marrow fluid has been permeated can be pushed out. It is possible to fill the affected part adjacent to the distal end opening 2a with the filling material.

  In this case, according to the filling material filling device 1 according to the present embodiment, the air G existing in the space in the barrel 2 is expelled into the through hole 4d of the plunger body 4a by the liquid B. When the plunger 4 is pushed, the inconvenience that the liquid B impregnated in the filler A is discharged from the tip opening 2a of the barrel 2 before the filler A can be prevented.

  In other words, the filling material A made of calcium phosphate porous granules tends to be stationary on the inner surface of the barrel 2 with a predetermined frictional force. For this reason, when an air layer exists between the filling material A gasket 4b, the liquid B is pushed out by the air layer before the filling material A is pushed by the gasket 4b. According to the present embodiment, the air G between the filling material A and the gasket 4 can be expelled to the through hole 4d, and a pressing force can be directly applied to the filling material A by the gasket 4b. As a result, the filling material A impregnated with the liquid B can be extruded and filled without being separated from the liquid B.

  In particular, when filling an insufflated subcutaneous part with a filling material, it is desirable to form the barrel 2 thin and long. In this case, the gap between the filling material A and the cylindrical inner surface 2a of the barrel 2 is desired. Since the frictional force increases, the above inconvenience becomes remarkable. According to this embodiment, there is an advantage that a pressing force can be directly applied to the filling material A without interposing an air layer, and the filling material A impregnated with the liquid B can be easily pushed out.

  Further, according to the present embodiment, when the plunger 4 is pushed and filled with the filling material, the stopper protrusion 12 provided on the plunger main body 4a has the rear end of the barrel 2 as shown in FIG. 9B. The further forward movement of the plunger 4 with respect to the barrel 2 is restricted. At this time, the tip of the gasket 4b is disposed at a position slightly protruding from the tip opening 2a of the barrel 2 as shown in FIG. 9A, so that all the filling material existing in the barrel 2 is pushed out. Will be.

  When the stopper projection 12 is not present, the gasket 4b inserted in a compressed state in the barrel 2 moves at once in the direction of releasing the compressed state when reaching the tip opening 2a of the barrel 2, Although there is a possibility of jumping out from the opening 2a, according to the present embodiment, the stopper protrusion 12 hits the rear end of the barrel 2 to prevent the gasket 4b from popping out. In particular, since the tapered opening 2a of the barrel 2 is provided with a tapered inner surface 2d that is in close contact with the tapered surface 3a of the connector 3, the gasket 4b slides on the tapered inner surface 2d and moves in a direction that protrudes from the distal opening 2a. However, the movement of the stopper projection 12 is limited.

  Therefore, the filling material is scattered by the pop-up of the gasket 4b at the end of filling of the filling material, or the bone defect portion formed by curettage of the cut-out subcutaneous affected part, for example, a bone tissue, is formed. When the material is filled, it is possible to prevent inconveniences such as impacting the bone defect portion by the protruding gasket 4b.

  In this embodiment, the barrel 2 is made of polypropylene. Instead, a harder resin such as a polycarbonate resin or a cyclic polyolefin resin is used, or a diamond coating or a DLC coating is applied to the inner surface. It is good also as reducing the friction between the filling material A and the barrel 2 by doing.

  Further, in this embodiment, it is confirmed that the liquid is sufficiently impregnated in the filling material A by visually observing the liquid level of the liquid B flowing into the through hole 4d of the plunger body 4a. As shown in FIG. 6, the sliding body 21 may be disposed in the through hole 4d. The sliding body 21 is made of a material that allows the gas G to pass but does not allow the liquid B to pass through, and is in contact with the inner surface of the through hole 4d with a light frictional force. Further, the sliding body 21 is colored so as to be easily visible from the outside through the plunger body 4a.

Thus, the sliding body 21 is held in place without moving until the liquid B reaches the sliding body 21, and when the liquid B reaches, it is pushed by the liquid B and moves together with the liquid B.
By doing in this way, even when the liquid B is colorless and transparent, the liquid surface position can be easily confirmed from the outside of the plunger 4, and the stop timing of the injection operation of the liquid B can be quickly determined. .

  Further, the connector 3 is attached to and detached from the barrel 2 by the male screw 5 of the barrel 2 and the female screw 7 of the connector 3, but instead, any other attaching and detaching mechanism such as a luer lock is adopted. It is good as well. Further, the through hole 4d of the plunger main body 4a is illustrated as extending through the entire length of the plunger main body 4a and opening at both ends, but instead of this, as shown in FIG. 11, the plunger main body 4a on the gasket 4b side is shown. A member that extends in the longitudinal direction from the end portion by a predetermined distance, bends in the longitudinal direction at an intermediate position in the longitudinal direction of the plunger body 4a, and opens to the outer peripheral surface may be employed.

  In this case, as shown in FIG. 11, the sliding body 21 similar to FIG. 10 is disposed in the through hole 4d, so that the sliding body 21 is liquid B as shown in FIGS. 11 (a) and 11 (b). The liquid level position can be easily confirmed from the outside of the plunger 4. Further, as shown in FIG. 11 (c), when the sliding body 21 reaches the end position of the through hole 4d, further movement of the sliding body 21 is suppressed, so that the liquid B is injected from the syringe 9. It becomes impossible to inform the operator of the end of the injection.

  Further, as shown in FIGS. 12 and 13, even when the through hole 4d extends over the entire length of the plunger body 4a, the abutting portions 22 and 23 are arranged in the middle of the longitudinal direction or at the end position. By placing, the sliding body 21 is abutted against the abutting portions 22 and 23 to prevent further movement, and the same effect as described above can be achieved.

  Further, the opening on the outside of the through hole 4d is configured so that the cap 8 that has closed the injection port 3b of the connector 3 can be attached, and the cap 8 removed from the injection port 3b is filled with the through hole by filling the filling material. The opening on the outside of 4d may be closed.

  Further, in the present embodiment, the mesh-like filter 10 is employed as the filter 10 that is disposed at a position where the opening on the gasket 4b side of the through hole 4d is closed. You may comprise by the sintered compact which has a hole. In particular, by configuring the filter 10 with a sintered body made of a biocompatible material such as a calcium phosphate porous body, even if the filter 10 falls off the plunger 4 and is supplemented to the affected area together with the filling material, the filter 10 is taken out from the affected area. There is an advantage that it is not necessary. Moreover, it is preferable that it is the same calcium phosphate porous body as the filling material A filled.

  Further, in the present embodiment, the gasket 4b as shown in FIG. 1 is adopted, but instead of this, a gasket 4b ′ that is short in the longitudinal direction may be adopted as shown in FIG. In this way, when the gasket 4b 'is compressed and accommodated in the barrel 2, the sliding contact is reduced by reducing the area that is in close contact with the cylindrical inner surface 2c of the barrel 2, and the filling material is reduced. There is an advantage that the ease of extrusion can be improved.

  Further, the material of the plunger body 4a is not limited to polypropylene, and any other material having a predetermined strength may be adopted. Further, the material is not limited to a colorless and transparent material, and a colored transparent material or a translucent material may be used.

  Moreover, in this embodiment, although the filling material filling instrument 1 which has the through-hole 4d in the plunger main body 4a was illustrated, it is not limited to this, It can apply also when not having the through-hole 4d. .

It is a longitudinal cross-sectional view which shows the filling material filling instrument which concerns on one Embodiment of this invention. It is a longitudinal cross-sectional view which shows the connector of the front-end | tip part of the filling material filling apparatus of FIG. It is a longitudinal cross-sectional view which shows the rear-end part of the barrel of the filling material filling instrument of FIG. It is a longitudinal cross-sectional view which shows the filling material filling kit which filled the filling material into the filling material filling apparatus of FIG. It is a longitudinal cross-sectional view which shows the connector of the front-end | tip part of the filling material filling kit of FIG. 4, (a) The state which obstruct | occluded the injection port of the connector with a cap, (b) The figure which each shows the state which replaced with the cap and inserted the syringe. It is. It is a longitudinal cross-sectional view which shows the rear-end part of the barrel of the filling material filling kit of FIG. It is a longitudinal cross-sectional view which shows the operation | work which inject | pours a liquid from the inlet of the connector of the filling material filling kit of FIG. It is a longitudinal cross-sectional view explaining the filling operation | work of the filling material using the filling material filling kit of FIG. It is a longitudinal cross-sectional view explaining the state at the time of completion | finish of the filling of the filling material by the filling material filling kit of FIG. 4, (a) The front-end | tip part of a barrel, (b) It is a figure which shows the rear-end part of a barrel. It is the modification of the filling material filling instrument of FIG. 1, Comprising: It is the longitudinal cross-sectional view which has arrange | positioned the sliding body in the through-hole, (a) The state which gas permeate | transmits a sliding body, (b) The sliding body is moved with a liquid. FIG. FIG. 10 is a modification of the filling material filling device of FIG. 10, in which the through hole is formed up to a middle position of the plunger body, (a) start of movement of the sliding body, (b) movement of the sliding body. It is a partial longitudinal cross-sectional view which respectively shows the completion | finish of the movement of (c) sliding body on the way. FIG. 10 is a modified example of the filling material filling device of FIG. 10, wherein the filling material filling device is provided with an abutting portion at a midway position of the through hole of the plunger body, and (a) the movement start of the sliding body, (b) the sliding It is a partial longitudinal cross-sectional view which respectively shows the completion | finish of a movement of a moving body. FIG. 10 is a modification of the filling material filling device of FIG. 10, wherein the filling material filling device is provided with an abutting portion at the end position of the through hole of the plunger body, and (a) the movement start of the sliding body, (b) the sliding It is a partial longitudinal cross-sectional view which respectively shows the completion | finish of a movement of a moving body. It is a modification of the filling material filling apparatus of FIG. 1, Comprising: It is the longitudinal cross-sectional view which attached the short gasket to the plunger front-end | tip.

Explanation of symbols

A Filling material 1 Filling material filling device 2 Barrel (outer cylinder)
2a Tip opening (opening)
2b Rear end opening (opening)
2d Taper inner surface 3 Connector (lid member)
3a taper surface 3b inlet 3c taper inner surface 4 plunger 4b, 4b 'gasket 8 cap 8a taper surface 10 filter 12 stopper protrusion (stopper)

Claims (5)

A straight tubular outer tube having both ends opened to accommodate a filling material containing a porous material;
A plunger inserted into the outer cylinder from the opening at the rear end of the outer cylinder,
The plunger includes a gasket disposed in the outer cylinder in a radially compressed state, and a stopper that abuts against the rear end of the outer cylinder when the front end surface of the gasket is disposed at substantially the front end of the outer cylinder. Filling material filling equipment. Removably attached to the tip of the outer cylinder, comprising a lid member that seals the opening at the tip,
A tapered inner surface that gradually widens toward the tip is provided at the opening at the tip of the outer cylinder,
The filling material filling device according to claim 1, wherein the lid member is provided with a tapered surface that comes into close contact with the tapered inner surface when attached to the outer cylinder. The lid member is provided with an inlet that communicates with the inside and outside of the outer cylinder in a state attached to the tip of the outer cylinder,
The filling material filling device according to claim 2, further comprising a cap that is detachably attached to the inlet and seals the inlet. The inlet is provided with a tapered inner surface that gradually widens in the opening direction,
The filling material filling device according to claim 3, wherein the cap is provided with a tapered surface that comes into close contact with the tapered inner surface when attached to the inlet.   The filling material filling device according to any one of claims 1 to 4, wherein the porous material is made of a calcium phosphate ceramic material.

Images