JPH0428361A - Insertion tool for living body material - Google Patents

Abstract

PURPOSE:To facilitate the insertion work to an injector from a storage container for a living body material by forming the first joint part into a cylindrical form for internally fitting the opened port part of a storage container and forming the projecting stripes for engaging a collar formed at the opened port part of the storage container, on the inner surface of the first joint part, thus preventing the slip of the storage container from an insertion tool and obviating the need of paying attention to the slip-off of the storage container. CONSTITUTION:As for a living budy material insertion tool 7, the first joint part 7a for joining the opened port part 3a of a storage container 3 and the second joint part 7c for joining an injector 5 are provided at both the edges of a conical part 7a. The first joint part 7b has a structure for internally fitting the head part 3a of the storage container 3 in demountable manner, and projecting stripes 7d are formed in the peripheral direction on the inner surface of the first joint part 7b. Accordingly, since the projecting stripes 7d are formed on the first joint part 7b of the insertion tool 7, and the collar 3b of the storage container 3 is engaged with the projecting stripes 7d, the slip-off of the storage container 3 from the insertion tool 7 is prevented, and the joining between the both is made storing, and the tilt of the storage container 3 for the insertion tool 7 is prevented, and the need for an operator to pay attention to the slip-off of the storage container 3 is obviated, and the work is facilitated.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention provides a surgical injector for injecting biomaterials in the form of powder, granules, or paste into an affected area. Relating to material filling tools.

(Prior art and inventions or problems to be solved) For example, in order to treat jaw bone diseases or replace bone after tooth extraction, the mucous membrane and periosteum of the affected area are incised, granular artificial bone is injected into the affected area, and the artificial bone is injected into the affected area. Bone adhesion to natural bone is performed to create mM.

This granular artificial bone is made of fired materials such as natural apatite and synthetic apatite, and is relatively brittle and easily breaks during handling. It was usually moistened and injected into the affected area using a syringe with the tip cut off.

However, this granular artificial bone is usually stored in a storage container such as a glass bottle, and when necessary, it is introduced into a surgical syringe for use, or this large-scale accumulation process is carried out inside the syringe. Remove the barrel, temporarily close the tip of the syringe with an appropriate means, and fill the syringe from the rear end with a spoon, or fill the syringe with physiological saline and place a small funnel on the tip. This was done by pouring the contents through this.

However, with this conventional method, the artificial bone must be fed little by little to avoid spilling it, which is labor-intensive and takes a long time to introduce. When using granular artificial bone, it is usually fibrous, which causes the problem that it adheres to the inner wall of the syringe, which is wet with the physiological saline introduced earlier, and prevents smooth filling. . In addition, in the conventional method, the artificial bone, which has been sterilized and stored, is exposed to the atmosphere and transferred, so there is a risk of contamination.

In order to solve such problems, the present inventors developed the first
As shown in FIG. 4, a storage container 3 such as a bottle for storing the artificial bone 1 together with physiological saline 2, etc. is inserted into a disposable resin surgical syringe 5 (5a is a cylindrical barrel, 5b is the barrel 5).
(a plunger slidably inserted into the plunger 5b) via the funnel-shaped resin introduction tool 4, turn them upside down as shown, and pull the plunger 5b as shown by the arrow a. The artificial bone 1 is allowed to settle into the barrel 5a without applying a slight vibration to the entire interior of the barrel 5a, and then the upper surface of the artificial bone 1 inside the barrel 5a is pushed up to the upper end of the barrel 5a by pushing up the plunger 5b. We propose a method in which the artificial bone l in the barrel 5a is injected into the affected area by removing the syringe 5 from the introduction tool 4, dispensing the physiological saline 2 from the syringe 5, and pushing out the plunger 5b of the syringe 5. (Japanese Patent Application Laid-Open No. 63-82657).

If such an introduction tool 4 and syringe 5 are used, bulking work can be carried out in a sealed state, thereby preventing contamination by airborne bacteria, etc. Also, if transparent materials are used, There are advantages in that work can be carried out without visually observing the state of injection of the artificial bone 1 from the outside, and that the introducing tool 4 and the syringe 5 can be provided at low cost using resin or the like.

However, according to the structure of the introducing tool 4, since it simply fits into the opening of the storage container 3, it is difficult to remove the storage container 3 from the introducing tool 4 during work, and it is difficult to remove the storage container 3 from the opening of the storage container 3. There was a problem that if the bond was weak, there was a risk of water leakage.

In view of the above-mentioned conventional problems, the present invention provides a method for loading biomaterials into a syringe, which makes it difficult to remove parts between parts and makes the work easier. The purpose is to provide equipment.

(Means for Solving the Problem) In order to achieve this object, the biomaterial filling tool according to the present invention has a funnel shape and has a storage container for powdered, granular or paste biomaterial at one end. In a biomaterial loading tool having a first joint part for joining and a second joint part for joining a syringe at the other end, the first joint part has a cylindrical shape that fits inside the opening of the storage container, It is characterized in that a protrusion is formed on the inner surface of the first joint portion to engage a collar formed at the opening of the storage container.

Further, the present invention is characterized in that the first joint portion is formed into a female screw shape into which the male screw portion of the storage container is screwed.

In addition to the above structure, as a preferred structure of the present invention, a first
There are structures in which a receiving part is formed inside the joint part to abut the end surface of the opening of the storage container, a structure in which a vertical ridge is formed on the outer surface of the insertion tool, and a structure in which the first joint part is formed in the opening end of the storage container. A structure having a length that fits over the body is employed.

Further, the present invention provides a structure for joining the insertion tool and the syringe, in which the second joint part has a cylindrical shape into which the tip of the syringe is fitted, and the outer surface of the syringe is attached to the inner surface of the second joint part. A structure with a protruding groove or protrusion that fits into the groove, a structure with a female thread into which the male thread at the tip of the syringe is inserted, or a cylindrical structure into which the tip of the syringe fits inside. , a joint having a groove consisting of a part provided vertically from the open end of the second joint part and a part provided in the circumferential direction from the inner part thereof, and in which several grooves are slidably engaged with a protrusion provided at the tip of the syringe. structure is adopted.

(Function) As described in item 2, the first joint part of the present invention has a structure in which a protrusion is provided on the inner surface and the brim of the opening of the storage container is locked to the protrusion, or a screw structure is provided. This makes it difficult to remove from the storage container or filling tool.

Furthermore, by forming a receiving part inside the first joint part to which the open end of the storage container comes into contact, the flange part of the storage container is formed between the protrusion and the receiving part. This prevents wobbling and increases the bonding strength between the filling tool and the storage container. Moreover, the strength is further increased by forming a vertical rift on the outer surface of the stacking tool. In addition, by having a structure in which the first joint part has a length that fits from the open end of the storage container to the body, the storage container is fitted to the filling tool along the body, resulting in a more stable jointed state. water leakage between the two is better prevented.

Further, the second joint part has a cylindrical shape into which the tip of the syringe is fitted, and the inner surface of the second joint part is provided with a protruding groove or protrusion formed on the outer surface of the syringe. or a structure formed into a female thread into which the male thread at the tip of the syringe is screwed, or a cylindrical structure into which the tip of the syringe is fitted, and a portion provided vertically from the open end of the second joint, and its structure. By having a groove consisting of a part provided in the circumferential direction from the inner part, and having a joint structure in which several protrusions provided at the tip of the syringe are slidably engaged,
The bond between the filling tool and the syringe also becomes stronger.

(Example) Fig. 1 is a longitudinal sectional view showing an example of the biomaterial loading tool according to the present invention in a working state, Fig. 2 (A), (B),
(C) is a plan view, a longitudinal sectional view, and a bottom view of the insertion tool, respectively. In FIGS. 1 and 2, the same reference numerals as in FIG. 12 indicate components that perform the same functions. The biomaterial loading tool 7 has a first joint part 7b to which the opening 3a of the storage container 3 is joined, and a second joint part 7c to which the syringe 5 is joined, at both ends of the conical part 7a. The first joint 7b has a structure in which the head 3a of the storage container 3 is removably fitted, and the first
A protrusion 7d is formed in the circumferential direction on the inner surface of the joint portion 7b.

The second joint 7C has a cylindrical shape into which the tip of the syringe 5 is fitted, and has a stopper 7e that abuts the tip of the syringe 5 inside. In order to facilitate insertion of the container 5, a tapered portion 7f is formed.

When loading the biomaterial 1 such as artificial bone in the storage container 3 into the syringe 5 using this loading tool 7, the tip of the syringe 5 is attached to the second joint 7C of the loading tool 7. Then, the first joint part 7b is fitted into the opening 3a of the storage container 3 which has been removed from M (not shown).

As a result, the protrusion 7d is locked to the collar 3b of the opening 3a.

In this state, the biomaterial 1 is turned upside down as shown in FIG. 1, and the plunger 5b is pulled down to settle the biomaterial 1 into the barrel 5a, as described above. Thereafter, the physiological saline 2 is wetted out by the same operation as described above, and the plunger 5b is pushed out to inject the biomaterial 1 into the affected area.

In this way, by forming the protrusion 7d on the first joint 7b of the loading tool 7 and locking the collar 3b of the storage container 3 to the protrusion 7d, the storage container 3 can be removed from the loading tool 7. It becomes difficult to take out the container, the bond between the two becomes strong, and the loading tool 7 of the storage container 3
Since the inclination to the storage container 3 is prevented, the operator does not have to be very careful when removing and removing the storage container 3, making the work easier.

Further, since the storage container 3 is prevented from tilting with respect to the loading tool 7, a gap is less likely to be formed between the two, and water leakage is less likely to occur. Also, the inner diameter e of the second joint portion 7C is set to the barrel 5a.
By forming the barrel slightly smaller than the outer diameter f of the barrel 5,
a can be firmly connected to the second joint portion 7C, and the provision of the tapered portion 7f facilitates joining.

FIG. 3 is a longitudinal cross-sectional view showing another embodiment of the loading tool 7A of the present invention with the storage container 3 joined, and FIGS. 4(A) to (C)
) are views corresponding to FIGS. 2(A) to 2(C) for this embodiment. The loading tool 7A of this embodiment has a receiving part 7g that contacts the opening end surface 3C of the storage container 3 between the conical part 7a and the first joint part 7b. The collar 3b of No. 3 is held between the receiving portion 7g and the protrusion 7d,
This prevents the storage container 3 from wobbling. Also,
Since the receiving portion 7g is formed approximately at right angles to the cylindrical portion, it serves to prevent the loading tool 7A from deforming into an elliptical shape, increasing the strength of the loading tool 7A. . Furthermore, since the vertical ribs 7h are formed on the outer surface of the loading tool 7A, bending and deformation of the loading tool 7A can be prevented.
The strength will further increase.

Furthermore, as shown in FIG. 3, by setting the inner diameter g of the opening 3a of the storage container 3 to be greater than or equal to the maximum inner diameter of the conical part 7a of the loading tool 7 (g≧h), the biomaterial l can be formed into a conical shape. It flows down smoothly without getting caught in the second part of part 7a. Also,
The inner diameter j of the barrel 5 is greater than or equal to the inner diameter i of the constricted portion between the conical portion 7a and the second joint portion 7C of the loading tool 7 (j≧
i) This prevents the biomaterial 1 from getting caught in the lower part of the conical portion 7a and allows it to flow down smoothly.

No. 51A shows another embodiment of the loading tool 7B according to the present invention,
It is a vertical cross-sectional view showing a state of connection with the storage container 3, and the loading tool 7B of this embodiment has a first joint 71 of the storage container 7B formed into a female thread, and an opening of the storage container 3 is formed in the female thread 71. The two are joined by screwing together a male threaded part 3d formed in the part, and according to this embodiment, a stronger joining strength than in the previous embodiment can be obtained.

FIG. 6 is a longitudinal cross-sectional view of another embodiment of the loading tool 7C according to the present invention, shown in a joined state with the storage container 3. According to this embodiment, a more stable joint state can be obtained than in the previous embodiment, and there is no risk of water leakage between the storage container 3 and the loading tool 7C. .

Although the above structure relates to the first joint part, the structure shown in FIGS. 7 to 9 is also adopted for the second joint part 7c, instead of simply fitting the syringe 5 therein. By doing so, the bonding strength can be increased.

The embodiment shown in FIG. 7 has a structure in which the second joint portion 7J is formed into a female screw shape into which the male screw portion 5c at the tip of the barrel 5a of the syringe 5 is screwed.

In the embodiment shown in FIG. 8, the second joint 7k has a cylindrical shape into which the tip of the syringe 5 is fitted, and the outer surface of the tip of the barrel 5a of the syringe 5 is attached to the inner surface of the second joint 7. A groove (a protrusion may also be used) into which the protrusion 5d formed in is fitted 7! 1 is formed in the circumferential direction. Note that 5h is a flange formed on the outer periphery of the barrel 5a, and the flange 5a serves as a flange that comes into contact with the end surface of the second joint 7 of the bottle inserting tool 7.

The embodiment shown in FIG. 9 has a groove 7n consisting of a part C provided vertically from the open end of the second joint part 7m and a part C provided in the circumferential direction from the inner part thereof, and the syringe 5 is provided in the ridge groove 7n. barrel 5a
It has a structure in which a protrusion 5e provided at the tip thereof is slidably engaged.

Note that the joint between the bottle-filling tool 7 and the syringe 5 has a structure in which the second joint 7c of the bottle-filling tool 7 or the inside of the tip of the barrel 5a is fitted, as shown in the tenth section, or As shown in the figure, the second joint part 7p is formed into a double cylinder shape, and the double cylinder part 7
It is also possible to adopt a structure in which the tip of the barrel 5a is fitted between the holes p.

In the following explanation, the syringe 5 is a disposable type made of resin, or as shown in the plan view of FIG. 12 and FIG. The present invention can also be applied when using a metal injector 5A. In the syringe 5A of this embodiment, the barrel 8 is a disposable resin cylindrical body, and the other parts are made of metal and are permanently usable. The plunger 9 of the syringe 5A is slidably inserted into the outer cylinder 10, and the proximal end of the plunger 9 is provided with a grip part 11 on which the base of the thumb rests. , a grip part 12 is provided on which fingers other than the thumb are hung, and the outer cylinder lO
The barrel 8 is formed into a semi-cylindrical shape except for the base end or its vicinity to facilitate attachment and detachment of the barrel 8, and the collars 8a protruding from both sides of the base end of the barrel 8 are fitted into the recesses 10a of the outer cylinder 10. Barrel 8
, insert the plunger 9 into the barrel 8, insert the tip of the barrel 8 into the second joint 7C of the bulking tool 7, and pull the plunger 9 to place the biomaterial l into the barrel 8 in the same manner as described above. By placing the base of the thumb on the grip part 11 provided on the plunger 9, hooking the other finger on the grip part 12 provided on the outer cylinder lO, and tightening these grip parts 11 and 12, the plunger 9 is Strongly pushed out, barrel 8
Even if the diameter is small, the biomaterial 1 can be easily pushed out, and the biomaterial can be injected into a small or narrow affected area. Moreover, if such an injector 5A is used, biomaterials can be easily injected.

In the present invention, various resin materials such as polyethylene and polypropylene can be used for the bottle tools 7.7A to 7C, but in the case of a type in which the joint part is fitted, flexible materials such as polyethylene may be used. It is preferable to use

Further, the present invention can be applied to a device in which the barrel is bent to perform treatment deep inside a cavity, and a device in which the tip of the barrel is formed sharply in order to treat a small affected area. Furthermore, the present invention can be applied to a direct injection method in which the biomaterial is not immersed in physiological saline or the like, and to materials other than human bones in which the biomaterial is in the form of powder or paste. Also,
The storage container 3 is not limited to being made of glass.

(Effects of the Invention) According to claim 1 or 2, it becomes difficult to remove the material from the storage container or the bottle container, and there is no need to take extreme care when removing or removing the storage container. Filling the container becomes easier. In addition, since the storage container is prevented from tilting against the bottle container, it is difficult for gaps to form between the two.
Water leaks are less likely to occur.

According to claim 3, the flange of the storage container is held between the protrusion of the bottle-containing utensil and the receiving part, thereby preventing wobbling, increasing the bonding strength between the storage container and the bottle-containing utensil, and providing a stable container. The bonded state is maintained. In addition, the receiving portion serves to prevent the bottled utensil from being deformed, thereby increasing the strength of the bottled utensil.

According to claim 4, since the vertical ridge is formed on the outer surface of the bottle-containing utensil, the bottle-containing utensil is prevented from being bent and deformed, and its strength is further increased.

According to claim 5, since the opening of the storage container and the body are fitted to the bottle-containing tool, a more stable joint state can be obtained, and water leakage between the storage container and the bottle-containing tool can be prevented. There is no fear of

According to claims 6 to 8, the second joint, which is the joint between the syringe and the bottling tool, is also difficult to pull out, increasing the joint strength, and facilitating the work.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the biomaterial loading tool according to the present invention in a working state, and FIG. 2 (A), (B), (
C) is a plan view, a vertical sectional view, and a bottom view of the stacking tool, FIG. 3 is a longitudinal sectional view showing another embodiment of the stacking tool of the present invention with a storage container attached, and FIG. (A) to (C) are views corresponding to FIGS. 2 (A) to (C) for this example, and
6 and 6 are longitudinal cross-sectional views showing another embodiment of the stacking tool according to the present invention in a state where it is connected to a storage container, and FIGS. 7 and 8 show a second joint of the stacking tool according to the present invention. FIG. 9 is an exploded perspective view showing other embodiments of the second joint part of the bulking tool according to the present invention, FIG. 10 and FIG. The figure is a side cross-sectional view showing another example of a joint structure of a syringe and a syringe to which the present invention is applied, and FIG. 12 is a state in which another syringe to which the present invention is applied is joined to a syringe. FIG. 13 is a plan view taken in the direction of arrow A in FIG. 12, and FIG. 14 is a longitudinal cross-sectional view showing a conventional storage container in a state where it is connected to a storage container and a syringe. 1 Biomaterial, 2: Physiological saline, 3: Storage container, 3a
: opening, 3b: collar, 3c: opening end, 3d: male thread, 5.5A: syringe, 5a: barrel j5b nib plunger, 5c: male thread, 5d: protrusion, 5e: protrusion, 7.7
A to 7C: Biomaterial loading tool, 7a: Conical part, 7b: First joint part, 7C: Second joint part, 7d: Projection, 7g: Receiving part, 7h: Rib, 71: Female thread part, 7 fL : jη, 7
n groove, 7p: second joint, 8: harrell, 8a: tsuba, 9
．． Plunger, 10: Outer cylinder, 10a: Recess, 11.12
:Grip part

Claims (8)

[Claims] 1. It has a funnel shape, and has a first joint part to which a storage container for powdered, granular, or paste biomaterial is joined at one end, and a second joint part to which a surgical syringe is joined to the other end. In the biomaterial loading tool, the first joint part has a cylindrical shape that fits into the opening of the storage container, and the first joint part has a protrusion on the inner surface that locks a collar formed at the opening of the storage container. A biomaterial loading tool characterized by comprising: 2. It has a funnel shape, and has a first joint part to which a storage container for powdered, granular, or paste biomaterial is joined at one end, and a second joint part to which a surgical syringe is joined to the other end. A biomaterial loading tool, characterized in that the first joint part is formed into a female thread shape into which a male threaded part of a storage container is screwed. 3. In claim 1 or 2, inside the first joint part,
A biomaterial loading tool, characterized in that a receiving part is formed to abut the end surface of an opening of a storage container. 4. A biomaterial loading tool according to any one of claims 1 to 3, characterized in that vertical ribs are formed on the outer surface. 5. A biomaterial loading tool according to any one of claims 1 to 4, characterized in that the first joint has a length that fits from the open end of the storage container to the body. 6. It has a funnel shape, and has a first joint part to which a storage container for powdered, granular, or paste biomaterial is joined at one end, and a second joint part to which a surgical syringe is joined to the other end. In the biomaterial insertion tool, the second joint has a cylindrical shape into which the tip of a surgical injector is fitted, and the inner surface of the second joint includes:
A biomaterial loading tool characterized by having a groove or a protrusion into which a protrusion formed on the outer surface of a surgical injector fits. 7. It has a funnel shape, and has a first joint part to which a storage container for powdered, granular, or paste biomaterial is joined at one end, and a second joint part to which a surgical syringe is joined to the other end. A biomaterial insertion tool, characterized in that the second joint portion is formed into a female screw shape into which a male screw portion at the tip of a surgical injector is screwed. 8. It has a funnel shape, and has a first joint part to which a storage container for powdered, granular, or paste biomaterial is joined at one end, and a second joint part to which a surgical syringe is joined to the other end. In the biomaterial insertion tool, the second joint has a cylindrical shape into which the tip of a surgical syringe is fitted, and a part provided vertically from the open end of the second joint and a part provided in the circumferential direction from the inner part thereof. 1. A biomaterial loading tool having a structure in which a protrusion provided at the tip of a surgical injector is slidably engaged and joined to the groove.