Grafting support tool

Abstract

To provide a grafting support tool that exhibits excellent operability in inserting a rootstock or a scion into a cylindrical body.SOLUTION: A grafting support tool 1A comprises a cylindrical body 2 having an insertion hole 5 penetrating in a vertical direction and a handle portion 4 provided on the outer side of the cylindrical body 2, where the handle portion 4 is substantially plate-shaped and sized so that an operator can hold both surfaces of the plate shape with multiple fingers.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a grafting support tool used in grafting cultivation. [Background technology]

[0002] For example, grafting supports are used for grafting and cultivating seedlings of solanaceae plants such as tomatoes, eggplants, and peppers. As shown in Fig. 15, a conventional grafting support 20 comprises a cylindrical body 22 having an insertion hole 25 extending therethrough in the vertical direction, and an attachment part 24 fixed to the cylindrical body 22 and protruding outward from the cylindrical body 22, with a ring part 24a provided at the tip of the attachment part 24 (Patent Document 1).

[0003] Next, we will explain how to use the grafting support tool 20. The cut surface of the rootstock 10 is inserted into the insertion hole 25 from the bottom of the cylindrical body 22, and the cut surface of the scion 11 is inserted into the insertion hole 25 from the top of the cylindrical body 22. The cut surfaces of the rootstock 10 and scion 11 are joined together inside the cylindrical body 22 to create the rooting surface 30.

[0004] The grafting support tool 20 maintains the rooting surface 30 by fixing the joint between the rootstock 10 and the scion 11 from the outer periphery with the cylindrical body 22. Then, a support 26 is passed through the ring portion 24a and the lower end of the support 26 is fixed to the ground. Through the above steps, the joint of the graft is fixed by the grafting support tool 20, and the graft is supported on the ground via the grafting support tool 20 and the support 26.

[0005] In the above-mentioned work, when inserting the rootstock 10 or scion 11 into the cylindrical body 22, the operator can easily perform the insertion work by holding the mounting portion 24 of the grafting support tool 20 with his / her hand. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 5182795 [Patent Document 2] Japanese Utility Model Application Publication No. 4-113547 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the above-mentioned conventional example, the mounting portion 24 was designed primarily for supporting the support 26, and therefore was not suitable for holding by hand and was small in size, which resulted in poor workability when inserting the rootstock 10 and scion 11 into the cylindrical body 22.

[0008] An object of the present invention is to provide a grafting support tool that allows for easy insertion of a rootstock or scion into a cylindrical body. [Means for solving the problem]

[0009] The present invention was made in consideration of the above problems, and is characterized in that (1) it comprises a cylindrical body with an insertion hole passing through it in the vertical direction, and a handle portion provided on the outside of the cylindrical body, the handle portion being approximately plate-shaped and sized so that an operator can grasp both sides of the plate with multiple fingers.

[0010] (2) In the above (1), a groove is provided on the inner surface of the insertion hole at the position of the cylinder where the handle portion is provided, over the entire area in the vertical direction of the cylinder.

[0011] (3) In the above (1) or (2), guide walls for the insertion hole are provided on the upper and lower end surfaces of the cylindrical body where the insertion hole opens, respectively.

[0012] (4) In the above (3), the guide wall portion is characterized in that notches cut toward the upper and lower end faces of the cylindrical body are provided at positions 180 degrees apart.

[0013] (5) In the above (1) or (2), the cylindrical body is characterized in that a slit is provided over the entire area in the vertical direction.

[0014] (6) In the above (1) or (2), the grafting support is characterized by having a vertically symmetrical shape. (7) In the above (1), the cylindrical body and the handle are made of elastically deformable synthetic resin or biodegradable plastic. (8) In the above (7), the biodegradable plastic is characterized by its transparency and the fact that the biodegradable material is not specified. (9) In the above (1), the cylindrical body is characterized in that the inner diameter is formed to be 1 to 4 mm. [Effects of the Invention]

[0015] According to the present invention, when an operator grasps the handle, the operator can hold both sides of the plate-shaped handle with multiple fingers, making the grafting support tool easy to handle and improving the ease of inserting rootstocks and scions into the cylindrical body. [Brief explanation of the drawings]

[0016] The drawings illustrate particular embodiments of the present invention, including essential features of the invention as well as alternative and preferred embodiments. [Figure 1] 1A and 1B show a first embodiment, and are perspective views of a grafting support tool as seen from above. [Figure 2] 1A and 1B show a first embodiment, and are perspective views of a grafting support tool as seen from below. [Figure 3] This shows the first embodiment, where (a) is a plan view of the grafting support device, (b) is a front view of the grafting support device, (c) is a left side view of the grafting support device, (d) is a right side view of the grafting support device, and (e) is a back view of the grafting support device. [Figure 4] Shows the first embodiment, (a) is a plan view of the grafting support, (b) is a cross-sectional view of (a) taken along line IV(b)-IV(b), (c) is a cross-sectional view of (a) taken along line IV(c)-IV(c), and (d) is a cross-sectional view of (a) taken along line IV(d)-IV(d). [Figure 5] FIG. 1 is a front view illustrating the first embodiment and explains the grafting operation. [Figure 6]FIG. 6 shows the first embodiment and is a view taken along the arrow D in FIG. 5(a). [Figure 7] 10A and 10B show a second embodiment, each of which is a perspective view of a grafting support tool as seen from above. [Figure 8] 10A and 10B show a second embodiment, and are perspective views of the grafting support tool as seen from below. [Figure 9] Shows the second embodiment, (a) is a plan view of the grafting support device, (b) is a front view of the grafting support device, (c) is a left side view of the grafting support device, (d) is a right side view of the grafting support device, and (e) is a back view of the grafting support device. [Figure 10] Shows the second embodiment, (a) is a plan view of the grafting support, (b) is a cross-sectional view of (a) taken along line X(b)-X(b), (c) is a cross-sectional view of (a) taken along line X(c)-X(c), and (d) is a cross-sectional view of (a) taken along line X(d)-X(d). [Figure 11] FIG. 10 is a perspective view showing the second embodiment and explaining the grafting operation. [Figure 12] FIG. 10 is a perspective view showing the state in which the tip side of the scion is inserted by aligning it with the recessed portion, according to the second embodiment. [Figure 13] FIG. 11 is a perspective view showing the second embodiment, in which the tip end of the scion is further inserted than in the state shown in FIG. [Figure 14] FIG. 14 shows the second embodiment, and is a view taken along arrow E in FIG. [Figure 15] FIG. 1 is a perspective view of a conventional grafting support tool. DETAILED DESCRIPTION OF THE INVENTION

[0017] Each embodiment will be described in detail below with reference to the accompanying drawings. In this example, a description of already known technologies will be omitted. Furthermore, the following examples illustrate devices and methods for embodying the technical idea of ​​the invention, and the technical idea of ​​the present invention is not limited to the following. Various modifications can be made to the technical idea of ​​the present invention within the scope of the matters described in the claims. In particular, it should be noted that the drawings are schematic and may differ from the actual product.

[0018] (First embodiment) A first embodiment is shown in Figures 1 to 6. The grafting support tool 1A is made of an elastically deformable synthetic resin or biodegradable plastic. The grafting support tool 1A is made of, for example, Acryft (registered trademark), and is formed by injection molding using a mold. Acryft is an ethylene-methyl methacrylate (EMMA) copolymer, a material that has high flexibility and transparency.

[0019] As shown in Figures 1 to 4, the grafting support device 1A comprises a cylindrical body 2, a slit 3 provided in the body 2, and a handle portion 4 integrally provided on the outside of the body 2, and the inner diameter of the body 2 is formed to be, for example, 1 to 4 mm.

[0020] An insertion hole 5 that penetrates vertically is provided in the cylindrical body 2. As shown in detail in Fig. 4, the insertion hole 5 has a straight surface 5a of the same circular diameter at the center of the cylindrical body 2, and tapered surfaces 5b near the upper and lower end faces 2a, 2b of the cylindrical body 2 that gradually increase in diameter toward each end face 2a, 2b.

[0021] The slits 3 are provided at positions 180 degrees apart on the handle portion 4. The slits 3 are provided across the entire vertical area of ​​the cylindrical body 2. Both ends of the slits 3 are open to the upper and lower end faces 2a, 2b of the cylindrical body 2. Therefore, the cylindrical body 2 can easily elastically deform in the direction of widening the width of the slits 3.

[0022] The handle 4 is provided at one location on the cylindrical body 2, and is provided across the entire area of ​​the cylindrical body 2 in the vertical direction. The handle 4 is flat and protrudes outward in the radial direction of the cylindrical cylindrical body 2. If the direction in which the handle 4 protrudes outward from the cylindrical body 2 is defined as the width direction and the vertical direction of the cylindrical body 2 is defined as the length direction, the rectangular sides of the handle 4 are sized so that an operator can grasp both flat sides with multiple fingers. Therefore, the operator can easily and securely grip the handle 4, and the force of the fingertips can be reliably transmitted to the handle 4.

[0023] In this embodiment, the width dimension W1 of the handle portion 4 is slightly smaller than the width dimension W2 of the cylindrical body 2, and the length dimension L1 of the handle portion 4 is the same as the length dimension L2 of the cylindrical body 2, and the handle portion 4 is set to have a vertically elongated shape (see FIG. 3(b)). Specifically, in the case of a vertically elongated shape, the width dimension W1 of the handle portion 4 may be set in the range of 0.5 to 3 times the width dimension W2 of the cylindrical body 2, and the length dimension L1 of the handle portion 4 may be set in the range of 0.9 to 2.0 times the length dimension L2 of the cylindrical body 2.

[0024] The thickness d1 of the handle (shown in FIG. 4(a)) is set to be thick enough so that it does not easily bend when an operator holds it during work.

[0025] A groove 6 is provided on the inner surface of the insertion hole 5, over the entire vertical area of ​​the cylindrical body 2, at the position of the cylindrical body 2 where the handle portion 4 is provided. As shown in FIG. 4(a), the groove 6 is set to a width d2 that is narrower than the thickness d1 of the handle portion 4. If the groove 6 were provided in a position on the cylindrical body 2 other than the position where the handle portion 4 is provided, there would be a portion where the thickness would be thinner, but at the position of the cylindrical body 2 where the handle portion 4 is provided, the thickness d1 of the handle portion 4 is thick and so the thickness does not become thinner. This makes it possible to prevent a decrease in the strength of the cylindrical body 2 and also to prevent sink marks from occurring during resin molding.

[0026] The grafting support tool 1A is configured as above and is provided in a vertically symmetrical form.

[0027] Next, the grafting operation using the grafting support tool 1A will be described. First, the grafting portion of the rootstock 10 is cut diagonally, and the grafting portion of the scion 11 is also cut diagonally. Next, the worker grasps the handle portion 4 with multiple fingers. The handle portion 4 is flat and sized so that the worker can grasp both sides of the flat plate with multiple fingers. Therefore, the worker can pinch the handle portion 4 between the thumb and index finger, the thumb and the index finger and middle finger, or the thumb and the index finger, middle finger, and ring finger.

[0028] The operator holds the handle 4 and positions the cylindrical body 2 of the grafting support tool 1A above the cut surface 10a of the rootstock 10. Then, as shown in Figures 5 and 6, the cut surface 10a of the rootstock 10 is inserted into the insertion hole 5 from below the cylindrical body 2, and then the cut surface 11a of the scion 11 is inserted into the insertion hole 5 from above the cylindrical body 2. At this time, the rootstock 10 and the scion 11 are inserted into the cylindrical body 2 so that their cut surfaces 10a, 11a face each other. Here, the rootstock 10 and the scion 11 are inserted in an orientation such that, when viewed from the front of the slit 3 (see Figure 5), the cut surfaces 10a, 11a of the rootstock 10 and the scion 11 face each other. Inserting them in this orientation reliably prevents problems such as the tip portions of the cut surfaces 10a, 11a of the rootstock 10 and the scion 11 coming out of the slit 3.

[0029] During this insertion operation, the operator can grasp the flat handle 4 with multiple fingers, allowing for easy and secure gripping, making the grafting support tool 1A easy to handle. The rootstock 10 and scion 11 inserted into the cylindrical body 2 are positioned with almost no gaps on the inner surface of the insertion hole 5, and the cut surfaces 10a, 11a of both are joined without any misalignment, thereby creating the rooting surface 30. The cylindrical body 2 of the grafting support tool 1A secures the joint between the rootstock 10 and scion 11 from the outer periphery.

[0030] Thereafter, the handle 4 is connected to, for example, a support (not shown) fixed to the ground. Because the graft is supported on the ground via the handle 4 and the support (not shown), the graft will not fall over due to wind, external forces, vibrations, etc., and the proper joining state can be maintained, improving the rooting efficiency of the rootstock and scion. Alternatively, the rootstock 10 and scion 11 may be directly fixed to a support (not shown) fixed to the ground with a string or the like.

[0031] As described above, the grafting support tool 1A comprises a cylindrical body 2 through which an insertion hole 5 penetrates in the vertical direction, and a handle portion 4 provided on the outside of the cylindrical body 2. The handle portion 4 is flat and sized to allow an operator to hold both sides of the flat plate between multiple fingers. Therefore, because an operator can hold the flat handle portion 4 between multiple fingers, the operator can easily and securely hold the handle portion 4, making the grafting support tool 1A easy to handle and improving the ease of inserting the rootstock 10 and scion 11 into the cylindrical body 2.

[0032] The handle portion 4 is a flat plate provided in one location, and even when gripped with a strong grip, the cylindrical body 2 does not elastically deform in the direction of opening the slit 3, and no inconveniences arise due to the widening of the insertion hole 5 of the cylindrical body 2. For example, in the case of clip-type grafting supports proposed in the past, the cylindrical body easily elastically deforms in the direction of opening the slit 3 when the clip is operated, so if gripped with a strong grip, the cylindrical body may exceed its elastic limit and undergo plastic deformation, which may interfere with the work. In contrast, the grafting support device 1A of this embodiment does not cause such inconveniences. Furthermore, the grafting support device 1A of this embodiment has a simpler configuration and is less expensive to manufacture than clip-type devices.

[0033] In this embodiment, the handle 4 is longer in the length direction than in the width direction, so that the handle 4 can be held not only between the thumb and index finger, but also between the thumb and the index finger and middle finger, or between the thumb and the index finger, middle finger and ring finger. Therefore, the handle 4 can be held in a manner that takes into consideration the grip strength, physical strength, and preference of the worker.

[0034] The insertion hole 5 has tapered surfaces 5b formed on the upper and lower end surfaces 2a, 2b of the cylindrical body 2. Therefore, the tapered surfaces 5b function as guide surfaces when inserting the cut surfaces 10a, 11a of the rootstock 10 or scion 11, allowing the rootstock 10 or scion 11 to be inserted smoothly into the cylindrical body 2, and the smooth insertion of the rootstock 10 or scion 11 into the cylindrical body 2 prevents damage to the cut surfaces 10a, 11a of the rootstock 10 or scion 11.

[0035] Slits 3 are provided across the entire vertical length of the cylindrical body 2. Therefore, the attachment surface, which is the joint surface between the rootstock 10 and the scion 11, effectively attaches, and as the graft grows and thickens, the cylindrical body 2 elastically deforms to widen the slits 3, thereby not interfering with the growth of the graft. As the graft grows further, the cylindrical body 2 widens completely and then detaches from the graft and falls to the ground. Therefore, there is no need to remove the graft support tool 1A. Furthermore, since the cylindrical body 2 has slits 3, when the rootstock 10 or scion 11 to be inserted into the cylindrical body 2 is slightly thicker than the diameter of the insertion hole 5, the cylindrical body 2 elastically deforms in the direction widening the slits 3, allowing the rootstock 10 or scion 11 to be inserted into the insertion hole 5, making it easy to use.

[0036] A groove 6 is provided on the inner surface of the insertion hole 5, at the position of the cylinder 2 where the handle 4 is provided, over the entire vertical length of the cylinder 2. Therefore, the sap leaking from the rooting surface flows down along the groove 6, preventing the sap from accumulating in the insertion hole 5 and the proliferation of bacteria, etc. Furthermore, water does not accumulate inside the insertion hole 5 during watering, preventing the growth of mold, etc.

[0037] The grafting support tool 1A is symmetrical from top to bottom, so that the rootstock 10 and scion 11 can be inserted without distinguishing between the top and bottom, making it easy to use.

[0038] (Second embodiment) Figures 7 to 14 show a second embodiment. The grafting support tool 1B of this second embodiment differs from the grafting support tool 1A of the first embodiment only in that it is provided with a guide wall portion 8. The same components as those of the first embodiment are given the same reference numerals in the drawings and will not be described again; only the different components will be described.

[0039] That is, in this second embodiment of the grafting support device 1B, as shown in Figures 7 to 10, guide wall portions 8 to the insertion hole 5 are protruded from the upper and lower end faces 2a, 2b of the cylindrical body 2 where the insertion hole 5 opens.

[0040] The slit 3 of the cylindrical body 2 is extended to the guide wall portion 8, and both ends of the slit 3 open to the tip surface of the guide wall portion 8. This allows the cylindrical body 2 to elastically deform in the direction in which the slit 3 widens.

[0041] The guide wall portion 8 is not provided at a uniform height around the entire circumference of the cylindrical body 2, except for the position of the extended slit 3. The guide wall portion 8 is provided with notches 9 cut out toward the upper and lower end faces 2a, 2b of the cylindrical body 2. The notches 9 are provided in two locations, one on the left and one on the right, rotated 45 degrees from the handle portion 4. In other words, the two notches 9 are positioned 180 degrees apart. The notches 9 serve as markers when inserting the rootstock 10 or scion 11 into the insertion hole 5. The height of the guide wall portion 8, excluding the position of the extended slit 3 and the notches 9, may be uniform.

[0042] The grafting support tool 1B is provided in a vertically symmetrical form, similar to the grafting support tool 1B of the first embodiment.

[0043] Next, the grafting operation using the grafting support tool 1B will be described. First, the grafting portion of the rootstock 10 is cut diagonally, and the grafting portion of the scion 11 is also cut diagonally. Next, the operator holds the flat handle 4 with multiple fingers (for example, the thumb and index finger) and positions the tubular body 2 of the grafting support tool 1B above the cut surface 10a of the rootstock 10. Then, as shown in Figure 11, the cut surface 10a of the rootstock 10 is inserted into the insertion hole 5 from below the tubular body 2, and then the cut surface 11a of the scion 11 is inserted into the insertion hole 5 from above the tubular body 2.

[0044] At this time, the cut surfaces 10a, 11a of the rootstock 10 and the scion 11 are guided by the guide wall portion 8 of the cylindrical body 2, so that the insertion work into the cylindrical body 2 is easy.

[0045] Furthermore, when inserting the cut surfaces 10a, 11a of the rootstock 10 and scion 11, the position of one notch 9 is oriented to face the front position of the cut surface 10a of the rootstock 10 (shown in Figure 12), and the position of the other notch 9 is oriented to face the front position of the cut surface 11a of the scion 11 (not shown), and the cut surfaces 10a, 11a of the rootstock 10 and scion 11 are inserted into the insertion hole 5.

[0046] 13 and 14, while maintaining the orientation of the rootstock 10 and scion 11 as described above, the cut surfaces 10a, 11a of the rootstock 10 and scion 11 are inserted into the cylindrical body 2 (only the insertion of the scion 11 is shown in FIGS. 13 and 14). Then, the cut surfaces 10a, 11a of the rootstock 10 and the scion 11 face each other precisely within the insertion hole 5, that is, they are oriented to join precisely. As a result, the cut surfaces 10a, 11a of both the rootstock 10 and scion 11 are joined precisely without misalignment within the cylindrical body 2, creating a rooting surface.

[0047] The second embodiment has the same functions and effects as the first embodiment. Furthermore, in the second embodiment, guide walls 8 are provided on the upper and lower end faces 2a, 2b of the cylindrical body 2 where the insertion hole 5 opens. Therefore, the cut surfaces 10a, 11a of the rootstock 10 and scion 11 are guided by the guide walls 8, facilitating the insertion work into the cylindrical body 2.

[0048] The guide wall 8 has notches 9 cut out toward the upper and lower end faces 2a, 2b of the cylindrical body 2 at positions 180 degrees apart. Therefore, as described above, by making the notches 9 function as markers that determine the orientation of the cut surfaces 10a, 11a of the rootstock 10 and the scion 11, the cut surfaces 10a, 11a of the rootstock 10 and the scion 11 can be joined accurately without misalignment within the insertion hole 5. Therefore, the cut surfaces 10a, 11a of the rootstock 10 and the scion 11 can be joined easily and accurately within the insertion hole 5.

[0049] Two notches 9 are provided on each of the upper and lower end faces 2a, 2b of the cylindrical body 2, so that the space of the notches 9, which are not used as markers to indicate the orientation of the rootstock 10 or scion 11, can be used to view the insertion hole 5 of the cylindrical body 2, and the rootstock 10 or scion 11 can be inserted while checking the state of the insertion hole 5, improving workability.

[0050] The grafting support tool 1B is symmetrical from top to bottom, so that the rootstock 10 and scion 11 can be inserted without distinguishing between the top and bottom, making it easy to use.

[0051] (Variations, etc.) In the first and second embodiments, the handle 4 is formed in a flat plate shape, but it may be formed in a substantially plate shape. In other words, the handle 4 may have on both sides irregularities on which the fingertips can be caught, and in this specification, the term "substantially plate-shaped" includes such irregularities.

[0052] In the first and second embodiments, the handle portion 4 is vertically elongated, but it may also be horizontally elongated.

[0053] In the first and second embodiments, the cylindrical body 2 has a cylindrical shape, but it may have a rectangular cylindrical shape, and any shape is acceptable.

[0054] In the first and second embodiments, the insertion hole 5 in the cylindrical body 2 does not have to be circular and can have any shape. However, if the insertion hole 5 is circular, the cylindrical body 2 can hold the rootstock 10 and scion 11 completely and completely, resulting in excellent holding stability.

[0055] In the first embodiment, no marker is provided to indicate the direction in which the cut surfaces 10a, 11a of the rootstock 10 and the scion 11 are inserted into the insertion hole 5, but a marker may be provided. In the second embodiment, the cutout 9 is used as the marker, but it may be something other than the cutout 9. In other words, the shape of the marker does not matter as long as it is visible. The marker may be something that can be recognized by touch.

[0056] In the first and second embodiments, the cylindrical body 2 and the handle portion 4 may be made of biodegradable plastic. Biodegradable plastic has the property that when buried in the soil, it dissolves slowly over time due to the moisture in the soil and is decomposed by microorganisms in the soil and water in nature, and any known material can be used without limitation. Furthermore, the biodegradable plastic may be transparent or opaque (colored). Transparent includes translucent, colorless transparent, and colored transparent.

[0057] With this configuration, the grafting supports 1A, 1B come off the graft as it grows, but since the cylindrical body 2 and the handle portion 4 are made of biodegradable plastic, even if they fall to the ground they will biodegrade and there is no need to retrieve them, saving time and effort.

[0058] Although each embodiment has been described in detail above, it is not limited to a specific embodiment, and various modifications and changes are possible within the scope of the claims. It is also possible to combine all or some of the components of the above-described embodiments. [Explanation of symbols]

[0059] 1A, 1B Grafting support 2 cylinders 2a,2b end face 3 slits 4 Handle 5 Insertion hole 6 Groove 8 Guide wall 9 Notch 10 Rootstock 10a,11a Cut surface 11 Scion

Claims

1. A grafting support device comprising a cylindrical body with an insertion hole passing through it in the vertical direction and a handle portion provided on the outside of the cylindrical body, the handle portion being approximately plate-shaped and sized so that an operator can grasp both sides of the plate between multiple fingers.

2. The grafting support device according to claim 1, characterized in that a groove is provided on the inner surface of the insertion hole at the position of the cylindrical body where the handle portion is provided, over the entire vertical area of ​​the cylindrical body.

3. 3. The grafting support according to claim 1, wherein guide walls for guiding the insertion holes are provided on the upper and lower end surfaces of the cylindrical body where the insertion holes are open, respectively.

4. 4. The grafting support according to claim 3, wherein said guide wall portion is provided with notches cut toward the upper and lower end faces of said cylindrical body at positions 180 degrees apart.

5. 3. The grafting support according to claim 1, wherein the cylindrical body is provided with a slit extending over the entire area in the vertical direction.

6. 3. The grafting support according to claim 1 or 2, characterized in that it is vertically symmetrical.

7. 2. The grafting support tool according to claim 1, wherein the cylindrical body and the handle are made of an elastically deformable synthetic resin or biodegradable plastic.

8. The grafting support device according to claim 7, characterized in that the biodegradable plastic is transparent and does not specify a biodegradable material.

9. 2. The grafting support device according to claim 1, wherein the cylindrical body has an inner diameter of 1 to 4 mm.

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