JP2016007518A - Filling jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filling jig of an artificial bone in which filling is made while controlling a filling amount to an internal deep portion of an operative field without the scattering to a periphery and detachment in the part aimed at, when powder and granular artificial bone materials are used to fill bone defects.SOLUTION: A device of the present invention is constituted by an inner member and an outer member made of materials deformable by pushing with fingers. A member with a function of closing the inside and the outside is installed in the outer member, and is closed down normally. When filling with an artificial bone, a closing mechanism is pushed aside by sliding the outer member and an outlet of the inner member is projected outside, and thereby the artificial bone can be ejected outside. Also, when the inside of the filling jig is clogged up with granules, an effect of massaging the inner member with the fingers can be obtained by pushing the outer member from the top thereof with the fingers, and thereby the clogging of the inner wall surface of the inner member can be released. Accordingly, the filling operation of the artificial bone can easily be performed, and thereby the confirmation of the filling work and the shortening of the surgery time can be achieved.

Description

  The present invention relates to a compensation jig for supplementing a bone diseased part with a granular artificial bone material in orthopedic surgery or the like.

  To treat bone defects due to accidents or illnesses, hydroxyapatite (hereinafter abbreviated as “HA”) or β-tricalcium phosphate (hereinafter “β”) is used to repair the missing bone. Artificial bone materials such as -TCP "are abbreviated as surgical materials.

  These surgeries are mainly performed by orthopedic surgeons and dentists. Depending on the condition of the diseased site, an appropriate size and appropriate amount of granular artificial bone material should be used with sharp or medical spoons or spoons. In other words, the bone gaps caused by the defect are compensated.

  However, in the filling work using such sharps, the powdered or granular artificial bone material spills or scatters to the surrounding soft tissue, and the workability is poor because it is not sufficiently filled in the target site, It was an obstacle to smooth operation.

  If the bone or powder of artificial bone material spills and adheres to the soft tissue around the part you want to replace during surgery, it can be washed away with physiological saline to remove it, or it can be applied to the soft tissue. It was necessary to remove each adhered grain using tweezers, which increased the operation time.

  As a measure for improving the above problems, a funnel-shaped replenishment jig made of metal as shown in Fig. 1 (1) may be used. The transition to the so-called tubular portion (hereinafter referred to as “tubular portion”) or the powder or granules are caught in the inside of the tubular portion and clogging is likely to occur, resulting in poor workability. Artificial bones made of HA or β-TCP are high in hardness and have corners on the surface, so that the transition from the funnel to the tubular part or the inner wall surface of the tubular part is likely to be clogged, thereby forcing the operation to be interrupted. If it is pushed in forcibly, the granule is crushed or the inner wall surface of the tubular part is scraped, and the material of the shaved funnel is mixed with the artificial bone material and becomes a problem.

  (2) in FIG. 1 shows a state in which the granules are poured into the funnel. Since a general funnel has an inverted cone with a small inclination angle A, the granules poured into the main body of the funnel sag into the mouth of the tubular portion at a time, and as a result, the granules antagonize and clog at the mouth. A phenomenon occurs.

  (3) of FIG. 1 shows a state in which the granules are clogged at the intermediate portion of the tubular portion, and FIG. 2 shows the state of the cross section of the tubular portion at this time. Artificial bones are ceramics, and granules are generally made by crushing ceramics. For this reason, the corners (edges) generated when the granules are crushed are generally formed as minute protrusions on the outer surface of the granules. Therefore, once the minute projection of the granule bites the inner wall of the tubular part somewhere in the tubular part, the microprojection is pushed further into the inner wall due to the pressure of the granule poured from above, and the tubular part is clogged. It becomes a state. In this state, the granules remain clogged inside the tubular portion and cannot be discharged downward.

  In addition, when artificial bone material needs to be filled deep in the surgical field, such as in hip joint surgery, a long funnel-shaped filling device with a tubular portion is inevitably used. Since there is a time difference between the operation of filling the granule and the timing of discharging from the tubular portion of the funnel, it is difficult to accurately control the amount of compensation required by the operator.

  None

  The problem to be solved is that in surgery where artificial bone needs to be compensated, when the artificial bone material is filled in the bone defect part, it is desired to quickly aim at the target place without scattering or dropping off to the surrounding tissue part. It is not possible to make up for the amount to be made.

  Also, when supplementing a granular artificial bone material, it is impossible to control the amount of compensation that the surgeon considers to be an appropriate amount.

  The present invention provides a granular artificial bone material capable of accurately and quickly filling a desired amount while controlling a filling amount when a granular artificial bone material is filled in a bone defect. This is a bone replacement jig.

  The compensation jig is composed of two members, an inner member and an outer member.

  One of the inner members has a wide mouth portion, and the wide mouth portion is connected to a tubular portion having a diameter smaller than the diameter of the wide mouth portion by an inverted conical surface while forming a funnel shape. The angle formed between the generatrix of the inverted conical surface and the central axis of the tubular portion (hereinafter referred to as “inclination angle A”) is comprised between 70 and 89 degrees, and the granules thrown in from the wide mouth slowly The structure is guided to the tubular part while sliding and prevents the granule from being antagonized at the mouth of the tubular part.

  When the inclination angle A is smaller than 70 degrees, the granules antagonize each other at the mouth of the tubular portion, as shown in FIG. 1 (2), resulting in a clogged state. If the inclination angle A is 90 degrees or more, the artificial bone thrown in from the wide-mouthed portion stays in that portion, and the compensation operation cannot be performed.

  By making the diameter of the inscribed circle of the wide mouth part 5 to 50 times the maximum particle diameter of the artificial bone to be supplemented, the charging operation is facilitated.

  The tubular portion of the inner member is a circular or polygonal cylindrical cavity, and can be filled with granules introduced from the wide mouth portion.

  Part or all of the tubular portion of the inner member is made of a transparent member, and the state of the granules filled inside can be visually recognized from the outside.

  The other of the inner members is a discharge port, and the granules filled in the tubular portion are discharged from here.

  When the tubular part of the inner member is clogged, the cross-sectional shape of the tubular part is changed by holding out the clogged part of the tubular part with a finger from the outside, and the clogging of the granule is released, thus promoting the discharge. It has a structure that can. For this reason, ABS, polycarbonate, polypropylene, polyethylene, polyethylene terephthalate, polystyrene, polyamide, polylactic acid, vinyl chloride, etc. are suitable for the material of the tubular portion.

  The diameter of the inscribed circle of the tubular portion needs to be a cavity having a size that can cover the maximum diameter of the granules to be compensated, and the minimum inscribed circle diameter should be 2 mm or more. Below that, the adhesion to the inner wall surface is strong and it is difficult to fall. In this case, considering the thickness that can be deformed with a finger, when the inscribed circle diameter of the tubular portion is small, it is better to make the wall thickness as thin as possible. As a result, it is appropriate that the inscribed circle diameter of the tubular portion is 2 mm or more and the wall thickness is 0.015 mm or more.

  As a frequently used granular artificial bone material, one having a maximum particle size of 8 mm or less is often used. In this case, the inscribed circle diameter of the tubular portion is about 2 to 10 times the maximum particle diameter, and the wall thickness is made of a plastic of 0.015 mm or more and 1.5 mm or less. Considering it becomes more appropriate.

  The outer member is also cylindrical, and the inner diameter is made slightly larger than the outer diameter of the inner member. The inner member is attached in a state where the inner member penetrates, and the outer member is slidable in the axial direction.

  Part or all of the outer member is made of a transparent material, and the state of the granules filled in the inner member can be visually recognized from the outside.

  When the lengths of the inner member and the outer member are compared, the inner member is longer than the outer member, and the difference between the lengths of both the inner member and the outer member can be slid.

  Since the artificial bone replacement in dentistry is a replacement in the oral cavity, the length of the tubular portion is preferably about 30 mm. If it is shorter than this, workability will be reduced. On the other hand, in the artificial bone replacement work in the artificial hip joint surgery, a certain length is required because the surgical field is filled in a deep part, and the maximum is about 500 mm. Therefore, the length of the tubular portion of the inner member of the artificial bone granule filling jig is suitably 30 mm or more and 500 mm or less.

One end of the outer member is an open port for inserting the inner member, but a strip-shaped small piece member with a narrow width and thinness is provided around the other mouth. The small piece member is 0.5 to 2.5 times the diameter of the outer member, and the width of the small piece member is 1/20 to 3 minutes of the inner member diameter. The number of sheets is sufficient to surround the periphery of the outlet of the inner member.
The plurality of small piece members are bent in the center direction of the outer member, thereby closing the mouth of the outer member. The width and thickness of the strip plate material of the small piece member are determined by the size of the granules to be supplemented. For example, when the particle diameter of the granules is 0.2 to 1.0 mm, the width of the small piece member is suitably 0.2 to 1.0 mm. When the particle size of the granules is 1.0 to 5.0 mm, the width of the small piece member is suitably 1.0 to 3.0 mm. When the granule particle size is 5.0 mm or more, the width of the small piece member is suitably 2.0 to 3.0 mm.

  Similarly to the inner member, the outer member has a structure in which the cross-sectional shape can be changed by holding it from the outside with a finger. For this reason, ABS, polycarbonate, polypropylene, polyethylene, polyethylene terephthalate, polystyrene, polyamide, polylactic acid, vinyl chloride, etc. are suitable for the material of the outer member.

  By inserting the discharge port of the inner member from the open port of the outer member and setting the discharge port of the inner member in contact with the small piece member of the outer member, the discharge port of the inner member is closed.

  In this state, when the wide mouth of the inner member is positioned upward and the artificial bone made of granules is inserted from the wide mouth and filled into the tubular portion, the artificial bone flows down due to gravity, but when it reaches the outlet, Since the small piece member installed in the member acts as a lid and the passage is blocked, the passage is blocked, and the granules are stored in the tubular portion of the inner member.

  When the filling amount of the granules in the tubular portion of the inner member is increased, the small piece member may be spread out due to the weight of the granules themselves. In this case, the closing property can be enhanced by increasing the thickness of the small piece member in order to improve the closing property, increasing the number of the small piece members, and installing the double piece member in duplicate.

  After a certain amount of artificial bone is filled in the tubular part of the inner member, the discharge port of the compensation jig is guided to the vicinity of the affected part to be supplemented.

  After guiding the discharge port of the compensation jig to the vicinity of the affected part, the outer member is slid upward and pulled up while the discharge port of the inner member is kept in that position.

  The small piece member of the outer member is flexible, and its mouth is closed by its elastic force, but by sliding the outer member against the elastic force of the small piece member, the discharge port of the inner member causes the small piece member to While deforming, it is pushed out and protrudes outside, the lid is opened and the artificial bone is discharged.

  As a result, the artificial bone filled in the tubular portion is discharged from the discharge port.

  After confirming that a desired amount of artificial bone has been compensated, the outer member is slid in the opposite direction and returned to its original position, so that the passage is closed again and the discharge of the artificial bone is stopped. As a result, the compensation amount can be controlled.

  The small piece member of the outer member is not limited to a plate material, and a flexible thin rod-like member (hereinafter referred to as “beard”) is closely placed around the mouth of the outer member and bent so as to face the center. It may be a structure. The material of the beard is a flexible and elastic resin such as ABS, polycarbonate, polypropylene, polyethylene, polyethylene terephthalate, polystyrene, polyamide, polylactic acid, and vinyl chloride. If it is a metal, stainless steel etc. are good.

  In some cases, the corner of the granule is caught on the inner wall surface of the tubular portion of the inner member, and the portion is clogged and the discharge is stopped. In this case, by holding the outer surface of the outer member with a finger, the shape of the inner surface of the tubular portion of the inner member can be deformed as shown in FIG. (12) of FIG. 5 is a view showing a state in which the shape of the inner surface of the tubular portion of the inner member is deformed and the corner catches of the granules are released.

  Since the outer member and the inner member are made of a thin and elastic member with rigidity so that the cross-sectional shape changes when the finger is pressed with the finger, the inner member is pressed with the finger from the outside of the outer member. The deforming force is also transmitted to the tubular portion, and the effect of unraveling with the finger works, and the granules that are caught inside the tubular portion and do not fall can be dropped downward.

  The granulated artificial bone filling jig of the present invention does not scatter or drop into the surrounding tissue of the portion to be filled with the artificial bone material, and can supply an appropriate amount to the target portion while controlling the filling amount. There is an advantage that the operation time can be shortened by the accurate compensation work.

  FIG. 3 is an overall view of the compensation jig. (1) on the left side is an inner member, which includes a funnel portion for introducing artificial bone material therein and a tubular portion for storing the filled artificial bone therein.

  The wide mouth of the funnel part of the inner member has a diameter of 40 mm and is a container with a depth of about 15 mm from the wide mouth part, where granules can be temporarily stored, and the bottom part is shaped like an inverted cone Is connected to the tubular part. The generatrix of the inverted conical surface has a gentle inclination with an inclination angle A of 75 ° with respect to the central axis of the tubular portion.

  In Example 1, the size of the granules used is φ1.5 to 4.0, the material of the inner member is PP (polypropylene), the inner diameter of the tubular portion is φ9.5, and the wall thickness is 0.3 mm.

  (6) in FIG. 3 is an outer member, which has a cylindrical shape for inserting the inner member, and one of the cylindrical shaped portions is an open mouth with a flange for holding the filling device by hand, and the other mouth A plurality of strip-shaped small strip members having a small width and thin flexibility so as to cover the cylinder are attached so as to cover the entire circumference of the mouth.

  The inner diameter of the outer member is φ11 mm, and the inner member has a thickness that allows the inner member to pass through and slide smoothly.

  (7) of FIG. 3 is the figure which made the inner member penetrate from the opening of an outer member, and was assembled in the use condition.

  In order to slide the outer member, the tubular part of the inner member is longer than the cylindrical part of the outer member.

  FIG. 4 shows the state of use. (8) on the left side fills the cavity of the tubular part by filling artificial bone granules from the funnel part, but it is filled because the discharge port is closed by the small piece member installed at the source of the outer member. No granules are discharged from there.

  Since the inner member and outer member are made of transparent members, the amount and state of filling of the granules filled into the tubular part of the inner member can be grasped visually from the outside, and the amount of charge from the funnel can be adjusted. can do.

  In a state where a certain amount of artificial bone is filled in the tubular portion, the discharge port of the inner member is guided to the affected portion to be compensated.

  (9) of FIG. 4 is a diagram showing the compensation operation. After the inner member discharge port is brought close to the vicinity of the filling portion, the inner member discharge port is slid upward while keeping the position of the inner member discharge port so that the inner member discharge port becomes a small piece member of the outer member. It can be expanded while deforming, and the discharge port can be protruded to the outside, whereby the artificial bone can be discharged from the discharge port and compensated to the affected part.

  FIG. 5 is a diagram in which the catch is released when the granules are caught on the inner wall surface of the tubular portion of the inner member. When the granule is caught, the movement of the outer member is transferred to the tubular part of the inner member by loosening the cylindrical part of the outer member with a finger. It is a figure.

  (10) in FIG. 4 is a diagram in which the discharge is stopped after the desired amount of artificial bone filling operation has been completed. After completion of the filling operation, the outer member is pulled downward, so that the outlet of the inner member is stored inside the outer member, and the outlet is closed again by the small piece of the outer member, thereby preventing the artificial bone from being discharged. It becomes like this.

  By performing the sliding operation of the outer member during the filling operation, the amount of the artificial bone discharged can be easily and reliably controlled.

  The left figure of FIG. 6 is an expanded view of the small piece member attached to the edge part of an outer member. The small piece member has a strip shape with a width of 2 mm and is formed of a thin plate of PET (polyethylene terephthalate) with a thickness of 0.15 mm. Each piece is bent at an angle from the tip at an angle. This is bent into a cylindrical shape so that the small piece member faces the center and joined to the outer member. Or you may manufacture integrally with an outer member.

  The number of small pieces is sufficient to surround the periphery of the mouth of the outer member.

  The right figure of FIG. 6 is the figure which looked at the state which bent the small piece member into the cylinder shape, and was joined to the outer member from the discharge port side. The strip-shaped small piece members are arranged in a spiral shape, and the gap between the small piece members is large enough to prevent the passage of granules.

  When the development view of the outer member in the left diagram of FIG. 6 is seen, a long hole is formed in the direction of sliding with the inner member. This has a convex part (not shown) that fits into the elongated hole on the side surface of the inner member, and the sliding operation and sliding amount are regulated by fitting the convex part of the inner member and the elongated hole of the outer member, and as a result Prevents members from falling off.

  The small piece member of the outer member of Example 2 is shown in FIG. Since the inner member has the same configuration as in Example 1, it is omitted.

  The number of small piece members is large, and the number of pieces that can double surround the periphery of the mouth of the outer member is attached. (Not shown)

  Thereby, the clearance gap between small piece members becomes narrow, and closing property becomes higher than Example 1, and it is suppressed that the granule stored by the inner member leaks from the clearance gap of a small piece part.

  The closing force also increases as the number of small piece members increases, and even if a large amount of granules are stored in the tubular part of the inner member, the small piece members are pushed and spread by the weight of the granules themselves, and can be suppressed from being discharged to the outside. it can.

  The small piece member of the outer member of Example 3 is shown in FIG. Although the inner member has the same configuration as that of the first embodiment, the wide mouth of the funnel portion has an irregular shape, and has a shape that prevents inadvertent rotation when the filling device is placed on a flat surface.

  In Example 3, the size of the granules used is φ1.5 to 4.0, the material of the inner member is PP (polypropylene), the inner diameter of the tubular portion is φ9.5, and the wall thickness is 0.3 mm.

  The inner diameter of the outer member is φ11 mm, and the inner member has a thickness that allows the inner member to pass through and slide smoothly.

  A thin rod-like member (hereinafter referred to as “beard”) having rigidity is installed at the end of the outer member shown in FIG. 8 on the outlet side, so that each beard faces the center of the outer member. Is bent at an angle.

  The shape of a beard is shown in FIG. The material is made of nylon 66, the thickness is 0.15 mm, the length is 16 mm, bent at 45 ° at a position of 10 mm from the tip of the beard, so that the bent tip of the beard faces the center, It is attached around the mouth of the outer member.

  FIG. 9 is an enlarged view of a beard when the beard is attached to the mouth of the outer member as viewed from the discharge port. The whiskers are installed from the peripheral part of the mouth toward the center part, but the interval and length of each whiskers are configured so as to be a gap that does not allow passage of granules. Accordingly, the thickness and length of the mustaches of each mustache, the density of the mustaches, and the gap between the mustaches should be such that the granules are caught in the gaps of the mustaches and cannot pass through. In this case, the whisker may be attached in a spiral shape with the center of the outer member as the eye.

  The operation and function of the beard is the same as in the first embodiment. The material of the beard is nylon 66, and when the artificial bone is discharged by the elastic force of the material, the outer member is slid and pulled up to discharge the artificial bone, based on the outer member. When returning, the beard also returns to its original state and the outlet is closed.

FIG. 1 shows a funnel referred to in the prior art. FIG. 2 is a view showing a state where granules are clogged inside the tubular portion. FIG. 3 (5) shows the inner member of the compensation jig. There is a funnel portion as an artificial bone inlet in the upper part, and a tubular portion serving as a storage space for storing artificial bone material filled from the inlet. (6) in FIG. 3 shows an outer portion, and strip-shaped small piece members made of a thin plate that functions as a lid are arranged at the bottom of the cylindrical portion. FIG. 3 (7) is an assembly view in which the inner member is inserted into the outer member. (8) of FIG. 4 is a figure which is filling the artificial bone from the insertion port of the funnel part of an inner member. The filled artificial bone is stopped under the tubular portion by the small piece member of the outer member. (9) of FIG. 4 is a view showing a state in which the discharge port of the inner member expands the small piece member and protrudes to the outside by sliding the outer member upward. (10) in FIG. 4 is a view in which the discharge port is closed by returning the deformation of the small piece member when the outer member is returned to the original position. (11) of FIG. 5 is a figure which cancels clogging by pushing the tubular part of the inner member from the side via the outer member when the inner wall surface of the tubular part of the inner member is clogged. The illustration of the outer member is omitted. (12) in FIG. 5 is a cross-sectional view of the tubular portion, and shows that the shape of the cross-section of the tubular portion is deformed by suppressing the side surface of the inner member, and the clogging of the granules caught on the inner wall surface is released. It is. The left figure of FIG. 6 is an expanded view of the small piece member attached to the outer member. It consists of strip-shaped thin plates. It may be integrated with the outer member. The right side of FIG. 4 is a view of the small piece member of the outer member as viewed from the discharge port side. Each piece is arranged in a spiral. In FIG. 7, the number of small piece members is increased, and the number of small piece members attached to the mouth of the outer member can be increased. FIG. 8 shows a small piece member formed into a thin rod shape (hereinafter referred to as a beard). The material is made of nylon 66, has a thickness of 0.15 mm, and the right end is directed to the central axis of the outer member, and the left end is closely fixed around the mouth of the outer member. FIG. 9 is a view of the state in which the mustache is attached to the outer member from the discharge port side. Each beard-like small piece member is attached toward the center, and the beard is bent inward to block the mouth of the outer member. FIG.

FIG. 1 shows a funnel referred to in the prior art. FIG. 2 is a view showing a state where granules are clogged inside the tubular portion. FIG. 3 (5) shows the inner member of the compensation jig. There is a funnel portion as an artificial bone inlet in the upper part, and a tubular portion serving as a storage space for storing artificial bone material filled from the inlet. (6) in FIG. 3 shows an outer portion, and strip-shaped small piece members made of a thin plate that functions as a lid are arranged at the bottom of the cylindrical portion. FIG. 3 (7) is an assembly view in which the inner member is inserted into the outer member. (8) of FIG. 4 is a figure which is filling the artificial bone from the insertion port of the funnel part of an inner member. The filled artificial bone is stopped under the tubular portion by the small piece member of the outer member. (9) of FIG. 4 is a view showing a state in which the discharge port of the inner member expands the small piece member and protrudes to the outside by sliding the outer member upward. (10) in FIG. 4 is a view in which the discharge port is closed by returning the deformation of the small piece member when the outer member is returned to the original position. (11) of FIG. 5 is a figure which cancels clogging by pushing the tubular part of the inner member from the side via the outer member when the inner wall surface of the tubular part of the inner member is clogged. The illustration of the outer member is omitted. (12) in FIG. 5 is a cross-sectional view of the tubular portion, and shows that the shape of the cross-section of the tubular portion is deformed by suppressing the side surface of the inner member, and the clogging of the granules caught on the inner wall surface is released. It is. The left figure of FIG. 6 is an expanded view of the small piece member attached to the outer member. It consists of strip-shaped thin plates. It may be integrated with the outer member. The right side of FIG. 4 is a view of the small piece member of the outer member as viewed from the discharge port side. Each piece is arranged in a spiral. In FIG. 7, the number of small piece members is increased, and the number of small piece members attached to the mouth of the outer member can be increased. FIG. 8 shows a small piece member formed into a thin rod shape (hereinafter referred to as a beard). The material is made of nylon 66, has a thickness of 0.15 mm, and the right end is directed to the central axis of the outer member, and the left end is closely fixed around the mouth of the outer member. FIG. 9 is a view of the state in which the mustache is attached to the outer member from the discharge port side. Each beard-like small piece member is attached toward the center, and the beard is bent inward to block the mouth of the outer member. FIG. FIG. 10 is a view of the discharge portion of the outer member as viewed from the front. The whisker-like members are arranged in the center direction from the peripheral part.

Claims (7)

In the filling jig for filling the granulated artificial bone material into the affected area, it has a funnel-shaped inlet for filling the granules in the filling jig, and from the inverted cone main body part and the main body part of the funnel In the structure of the transition portion to the tubular portion called “foot” (hereinafter referred to as “tubular portion”), the angle formed by the central axis of this tubular portion and the generatrix of the funnel cone is 70 to 89 degrees. A prosthetic jig for granulated artificial bone. It is composed of two bodies, an inner member and an outer member, with a filling device for filling a granular artificial bone material inside,
The inner member is formed with a funnel-shaped inlet for filling and storing artificial bone material therein, and an inverted conical main body portion of the funnel and a tubular portion from the main body portion (hereinafter referred to as “tubular portion”) Have moved to
The cross-sectional shape of the tubular part is a circle or a polygon, and there is a cavity for storing artificial bone material inside, and the other part of the tubular part has a structure with a discharge port for discharging the stored artificial bone material. And
The outer member is a cylinder with the same cross-sectional shape as the tubular part of the inner member. It is slightly thicker than the inner member, and can slide in the axial direction with the inner member inserted inside. It has a structure for providing a closing function so that the filled granule cannot pass through, and the width is 5 mm or less, preferably 2 mm or less, and the thickness is so as to surround the periphery of the mouth of the cylinder of the outer member. A plurality of thin strip-shaped small piece members of 0.6 mm or less, preferably 0.2 mm or less are attached, the small piece members are bent and attached so as to face the center of the cylinder, and the length of each small piece member Has a length more than 0.6 times the inscribed radius of the cylinder, and is provided close enough to close the mouth of the outer member,
This small piece member is made of an elastic material that is easily deformed when a pressing force is applied from the inside of the cylinder, or restored to its original shape when the force is weakened, and the cylindrical part is normally closed by the small piece member. A prosthetic jig for a granular artificial bone, characterized by being in a state. 3. The compensation jig according to claim 2, wherein the material of the tubular portion of the inner member and the tubular portion of the outer member is a material having a thickness and rigidity that can easily change the cross-sectional shape by pressing with a finger. A supplementary jig for artificial bone material, characterized in that In Claim 2 or Claim 3, all or a part of the tubular portion of the inner member and the tubular portion of the outer member are made of a transparent material, and the internal volume and filling state of the artificial bone material filled therein are determined. Compensation jig that can be visually confirmed from the outside. 4. The compensation jig according to claim 2, wherein the diameter of the inscribed circle of the tubular portion of the inner member is 2 mm or more, and the thickness of the tubular portion of the inner member and the cylindrical portion of the outer member is 0. A supplementary jig for artificial bone material, characterized by being made of plastic of 015 mm or more. The compensation jig according to claim 2 or 3, wherein the radius of the inscribed circle of the tubular portion of the inner member is substantially the same or far from the funnel when compared with the side near the funnel and the side far from the funnel. An artificial bone material replenishment jig characterized in that is larger. 4. The artificial bone according to claim 2, wherein the tubular part of the inner member is longer when the length of the tubular part of the inner member is compared with the tubular part of the outer member. Material replenishment jig.

Images