Bone taking ring saw
By designing an arc-shaped bone harvesting ring, the system achieves ring saw cutting and clamping rotation for bone harvesting, solving the problems of large trauma or low efficiency in existing bone harvesting methods, improving surgical efficiency and reducing the trauma area.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-03-27
AI Technical Summary
Existing bone harvesting methods, such as using bone scalpels or scabbards, result in larger wounds or longer harvesting times, leading to low efficiency and increased surgical risks.
The first and second sawing pieces have an arc-shaped cross-section and form a rotation axis through a hinge. They can close to form a ring saw to cut the bone, and when opened, they can clamp the bone strips and remove them by rotation or pulling, avoiding the need for other tools.
It improves the efficiency of bone harvesting, shortens the operation time, reduces the trauma area, and is beneficial to patient recovery.
Smart Images
Figure CN224039255U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field, concretely is a kind of bone ring. BACKGROUND
[0002] Bone grafting is often needed in orthopedic surgery process, artificial bone, allograft or autograft is generally used, and autograft is the best bone grafting choice. This requires doctors to take bone on the ilium of patients.
[0003] The current bone taking method generally uses bone knife or ring to take bone. When using bone knife to take bone, the wound surface of the patient is larger, which is not conducive to the recovery of the patient. Although the wound surface is smaller when using ring to take bone, it is not easy to take bone because other tools are needed to cooperate with bone cutting when cutting bone, so the bone taking time is long, and the efficiency is low, which will prolong the operation time and increase the operation risk. UTILITY MODEL CONTENT
[0004] To solve the above problems, the present application provides a bone ring, which is convenient for bone taking, can improve the operation efficiency and shorten the operation time.
[0005] The utility model solves its technical scheme as follows:
[0006] A bone ring includes a first sawing member and a second sawing member with an arc-shaped cross section.
[0007] The first sawing member includes a first storage part, a first hinged part and a first sawing part in sequence along the axial direction, and the end face of the first sawing part is provided with a first sawtooth structure.
[0008] The second sawing member includes a second storage part, a second hinged part and a second sawing part in sequence along the axial direction, and the end face of the second sawing part is provided with a second sawtooth structure.
[0009] The first hinged part is hinged with the second hinged part, and a rotation axis is formed.
[0010] The first sawing member and the second sawing member can rotate around the rotation axis, and form two working states of closing and opening.
[0011] When in the closed state, the first sawing member is parallel to the second sawing member.
[0012] When in the open state, the first storage part and the second storage part are far away from each other, and the first sawing part and the second sawing part are close to each other.
[0013] Further, the two ends of the first hinged part along the arc-shaped structure are respectively provided with a hinged head, and the two ends of the second hinged part along the arc-shaped structure are respectively provided with a hinged groove matched with the hinged head.
[0014] Further, the edge surface of the hinge joint is a conical surface with the rotation axis as the central axis, and the inclination directions of the edge surfaces of the two hinge joints are opposite, and the edge surface of the hinge groove is a conical surface matched with the edge surface of the hinge joint.
[0015] Further, the hinge joint is in an arc structure, and the cylindrical surface where the inner side surface of the hinge joint is located is the same as the cylindrical surface where the inner side surface of the first hinge part is located, and the cylindrical surface where the outer side surface of the hinge joint is located is the same as the cylindrical surface where the outer side surface of the first hinge part is located.
[0016] Further, the end of the first storage part is provided with a first handle, and the end of the second storage part is provided with a second handle.
[0017] Further, the first handle and the second handle are in a crossed state.
[0018] Further, the first handle comprises a first mounting block, one end of the first mounting block away from the first sawing piece is provided with a first holding handle, the second handle comprises a second mounting block, one end of the second mounting block away from the second sawing piece is provided with a second holding handle, and when the first sawing piece and the second sawing piece are in a closed state, the first mounting block and the second mounting block jointly form a cylindrical structure.
[0019] Further, the first handle is provided with a first groove, the second handle is provided with a second groove, and when the first sawing piece and the second sawing piece are in a closed state, the first groove and the second groove jointly form a through hole in communication with a cavity formed by the first sawing piece and the second sawing piece.
[0020] Further, a buckle is further included, the buckle is provided with a limiting hole for accommodating the first sawing piece and the second sawing piece, and the buckle is used for limiting the opening angle of the first sawing piece and the second sawing piece.
[0021] Further, the limiting hole comprises a clamping part and a limiting part, clamping protrusions are arranged on the two side walls of the limiting hole between the limiting part and the clamping part, and the clamping part is clamped on the first sawing piece or the second sawing piece.
[0022] The utility model discloses the beneficial effect is:
[0023] The bone taking ring provided by the embodiment of the application adopts a scissors type structure, and can form a complete ring saw when closed, so as to perform annular cutting on the bone, and the head part can clamp the bone strip when opened, so as to break and take out the bone strip by rotating or pulling. The process does not need to break the bone by means of other tools, is convenient for taking the bone, can effectively improve the operation efficiency, and thus shortens the operation time. In addition, since the bone taking ring provided by the embodiment of the application can form a complete ring saw when closed, the trauma is small, and is beneficial to the recovery of the patient. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 A perspective structural schematic diagram of the bone taking ring provided by the embodiment of the application Figure 1 ;
[0025] Figure 2 An enlarged structural schematic diagram of part A in Figure 1 ;
[0026] Figure 3 A side view of the bone taking ring provided by the embodiment of the application
[0027] Figure 4 An A-A sectional view in Figure 3 ;
[0028] Figure 5 A B-B sectional view in Figure 3 ;
[0029] Figure 6 A perspective structural schematic diagram of the bone taking ring provided by the embodiment of the application Figure 2 ;
[0030] Figure 7 A perspective structural schematic diagram when the bone taking ring is in an opened state
[0031] Figure 8 An installation structural schematic diagram of the first sawing part and the first handle
[0032] Figure 9 An enlarged structural schematic diagram of part B in Figure 8 ;
[0033] Figure 10 An installation structural schematic diagram of the second sawing part and the second handle
[0034] Figure 11 An enlarged structural schematic diagram of part C in Figure 10 ;
[0035] Figure 12 A perspective structural schematic diagram of the buckle
[0036] Figure 13A working process of taking bone rings provided by an embodiment of the present application Figure 1 ;
[0037] Figure 14 A working process of taking bone rings provided by an embodiment of the present application Figure 2 .
[0038] In the figure: 11, first sawing part; 111, first storage part; 112, first hinged part; 1121, hinge joint; 1122, avoiding groove; 1123, connecting part; 113, first sawing part; 1131, first sawtooth structure; 12, first handle; 121, first mounting block; 1211, first front mounting part; 1212, first rear mounting part; 1213, first recess; 122, first holding handle; 1221, first holding hole;
[0039] 21, second sawing part; 211, second storage part; 212, second hinged part; 2121, hinged groove; 2122, hinged protrusion; 2123, avoiding notch; 213, second sawing part; 2131, second sawtooth structure; 22, second handle; 221, second mounting block; 2211, second front mounting part; 2212, second rear mounting part; 2213, second recess; 222, second holding handle; 2221, second holding hole;
[0040] 3, buckle; 31, limiting hole; 311, clamping part; 312, limiting part; 32, clamping protrusion;
[0041] 41, joint surface; 42, opening;
[0042] 5, bone strip. DETAILED DESCRIPTION
[0043] In order to make the person skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application, and the described embodiments are only part of the embodiments of the present application, not all the embodiments. All other embodiments obtained by the person skilled in the art without creative labor on the basis of the embodiments of the present application shall belong to the protection scope of the present application.
[0044] For the convenience of description, the coordinate system is defined as shown in Figure 1 , and the left-right direction is transverse, the front-rear direction is longitudinal, and the up-down direction is vertical.
[0045] Embodiment one
[0046] As shown in Figure 1 and Figure 7As shown, a bone harvesting tool includes a first sawing piece 11 and a second sawing piece 21 with an arc-shaped cross-section. The openings of the first sawing piece 11 and the second sawing piece 21 are opposite to each other and arranged symmetrically.
[0047] according to Figure 1 In the coordinate system shown, the first sawing member 11, from back to front, includes a first storage section 111, a first hinge section 112, and a first sawing section 113. The end face of the first sawing section 113 is provided with a first saw tooth structure 1131. The second sawing member 21, from back to front, includes a second storage section 211, a second hinge section 212, and a second sawing section 213. The end face of the second sawing section 213 is provided with a second saw tooth structure 2131. The first hinge section 112 and the second hinge section 212 are hinged together to form a rotation axis. The first sawing member 11 and the second sawing member 21 can rotate around the rotation axis, thereby forming two working states: closed and open.
[0048] When the first sawing member 11 and the second sawing member 21 are in the closed state, the first sawing member 11 and the second sawing member 21 are parallel, the first saw tooth structure 1131 and the second saw tooth structure 2131 are flush, and form as shown in the figure. Figure 2 The diagram shows a ring saw structure with two notches. When the bone-harvesting ring saw is rotated around its own axis, the ring saw structure at the front end can perform a ring cut on the bone. As the bone-harvesting ring saw delves deeper, the bone strip 5 formed by the ring cut can enter the cavity formed by the first sawing member 11 and the second sawing member 21, i.e., as... Figure 13 The state shown.
[0049] When the first sawing piece 11 and the second sawing piece 21 are in the open state, the first storage section 111 and the second storage section 211 are separated and moved away, while the first sawing section 113 and the second sawing section 213 are brought closer together. The close-approaching first sawing section 113 and the close-approaching second sawing section 213 can clamp the root of the bone strip 5. At this time, the bone strip 5 can be cut off at the root by rotation or pulling. Then, as... Figure 14 As shown, continue to keep the clamped state and remove bone strip 5.
[0050] As one specific implementation method, such as Figure 8 and Figure 9 As shown, in this embodiment, the first hinge portion 112 has hinge joints 1121 at both ends along the arc-shaped structure. The edge surface of the hinge joint 1121 is a conical surface with the rotation axis as its central axis, and the inclination directions of the edge surfaces of the two hinge joints 1121 are opposite. For example, the diameter of the conical surface containing the edge surface of the hinge joint 1121 gradually decreases from the inside to the outside. Figure 10 andFigure 11 As shown, the second hinge part 212 is provided with a hinge groove 2121 at each end of the arc-shaped structure, which cooperates with the hinge joint 1121. The edge surface of the hinge groove 2121 is a tapered surface which cooperates with the edge surface of the hinge joint 1121.
[0051] As shown, Figure 3 and Figure 5 Thus, the inclination directions of the joint surfaces 41 between the hinge joint 1121 and the hinge groove 2121 are opposite, and the hinge structures on both sides (including the hinge joint 1121 and the hinge groove 2121) can restrict each other, thereby limiting the freedom of relative movement of the first sawing part 11 and the second sawing part 21 in the left-right direction (according to the coordinate system shown in Figure 1 As shown,
[0052] Further, the hinge joint 1121 is in an arc-shaped structure, and the cylindrical surface where the inner side surface of the hinge joint 1121 is located is the same as the cylindrical surface where the inner side surface of the first hinge part 112 is located, and the cylindrical surface where the outer side surface of the hinge joint 1121 is located is the same as the cylindrical surface where the outer side surface of the first hinge part 112 is located. Thus, when the first sawing part 11 and the second sawing part 21 are in the closed state, both the inner side surface and the outer side surface are smooth curved surfaces, which can reduce the trauma surface when the bone ring is rotated to cut the bone.
[0053] Further, as shown, Figure 2 , Figure 9 and Figure 11 As shown, the second hinge part 212 is provided with a hinge protrusion 2122 at each end of the arc-shaped structure, and the hinge groove 2121 is arranged on the hinge protrusion 2122. The hinge protrusion 2122 is in an arc-shaped structure, and the cylindrical surface where the inner side surface of the hinge protrusion 2122 is located is the same as the cylindrical surface where the inner side surface of the second hinge part 212 is located, and the cylindrical surface where the outer side surface of the hinge protrusion 2122 is located is the same as the cylindrical surface where the outer side surface of the second hinge part 212 is located. The first hinge part 112 is provided with an avoiding groove 1122 at each end of the arc-shaped structure, which avoids the hinge protrusion 2122, and the hinge joint 1121 is located in the avoiding groove 1122 and connected to the edge surface of the avoiding groove 1122 through a connecting part 1123. The hinge protrusion 2122 is provided with an avoiding notch 2123 which avoids the connecting part 1123. The connecting part 1123 is in an arc-shaped structure, and the cylindrical surface where the inner side surface of the connecting part 1123 is located is the same as the cylindrical surface where the inner side surface of the first hinge part 112 is located, and the cylindrical surface where the outer side surface of the connecting part 1123 is located is the same as the cylindrical surface where the outer side surface of the first hinge part 112 is located.
[0054] As a specific embodiment, the connecting portion 1123 and the avoiding gap 2123 are both in a fan shape, and the central angle of the avoiding gap 2123 is greater than that of the connecting portion 1123, so as to leave space for the swinging of the connecting portion 1123 in the avoiding gap 2123.
[0055] Further, as shown in Figure 9 and Figure 11 , the edge surface of the hinged protrusion 2122 is a conical surface with the rotation axis as the central axis, and the inclined directions of the edge surfaces of the two hinged protrusions 2122 are opposite. Correspondingly, the edge surface of the avoiding groove 1122 is a conical surface matched with the edge surface of the hinged protrusion 2122.
[0056] As shown in Figure 7 Figure 9 and Figure 10 , according to the coordinate system shown in Figure 1 , the rear end of the first sawing part 11 (i.e. the end of the first storage part 111) is provided with a first handle 12, and the rear end of the second sawing part 21 (i.e. the end of the second storage part 211) is provided with a second handle 22. The first handle 12 includes a first mounting block 121, the first storage part 111 is fixedly connected to the front end surface of the first mounting block 121, and the end of the first mounting block 121 away from the first sawing part 11 is provided with a first holding handle 122. The second handle 22 includes a second mounting block 221, the second storage part 211 is fixedly connected to the front end surface of the second mounting block 221, and the end of the second mounting block 221 away from the second sawing part 21 is provided with a second holding handle 222.
[0057] Further, the first handle 12 and the second handle 22 are in a crossed state. In this way, when the operator holds the first handle 12 and the second handle 22 in a gripping posture, the first sawing part 11 and the second sawing part 21 are in an open state, so as to facilitate the force to clamp the cut bone strip 5 for rotation or pulling operation.
[0058] As a specific embodiment, the first holding handle 122 extends to the side of the second sawing part 21, the second holding handle 222 extends to the side of the first sawing part 11, the first holding handle 122 is provided with a first holding hole 1221, and the second holding handle 222 is provided with a second holding hole 2221.
[0059] Further, as shown in Figure 1As shown, when the first sawing piece 11 and the second sawing piece 21 are in the closed state, the first mounting block 121 and the second mounting block 221 jointly form a complete cylindrical structure and are coaxially arranged with the cylindrical surface on which the first sawing piece 11 and the second sawing piece 21 are located.
[0060] As a specific embodiment, as shown in the drawings, Figure 8 and Figure 10 As shown, according to the coordinate system shown in Figure 1 The first mounting block 121 in this embodiment includes a first front mounting portion 1211 with a semicircular cross-section, the front end surface of the first front mounting portion 1211 is fixedly connected with the first sawing piece 11, and the surface opposite to the cylindrical side surface of the first front mounting portion 1211 faces the lower side. A first rear mounting portion 1212 with a semicircular cross-section is arranged on the side surface of the first front mounting portion 1211 opposite to the first sawing piece 11, the first rear mounting portion 1212 is located on the left side of the first front mounting portion 1211, and the surface opposite to the cylindrical side surface of the first rear mounting portion 1212 faces the right side. The cylindrical surface on which the outer side surface of the first front mounting portion 1211 is located is the same cylindrical surface as the cylindrical surface on which the outer side surface of the first rear mounting portion 1212 is located. A first handle 122 extending rearward and downward is arranged on the lower end portion of the first rear mounting portion 1212. The second mounting block 221 includes a second front mounting portion 2211 with a semicircular cross-section, the front end surface of the second front mounting portion 2211 is fixedly connected with the second sawing piece 21, and the surface opposite to the cylindrical side surface of the second front mounting portion 2211 faces the upper side. A second rear mounting portion 2212 with a semicircular cross-section is arranged on the side surface of the second front mounting portion 2211 opposite to the second sawing piece 21, the second rear mounting portion 2212 is located on the right side of the second front mounting portion 2211, and the surface opposite to the cylindrical side surface of the second rear mounting portion 2212 faces the left side. The cylindrical surface on which the outer side surface of the second front mounting portion 2211 is located is the same cylindrical surface as the cylindrical surface on which the outer side surface of the second rear mounting portion 2212 is located. A second handle 222 extending rearward and upward is arranged on the upper end portion of the second rear mounting portion 2212.
[0061] Further, a first recess 1213 is arranged on the first handle 12, and a second recess 2213 is arranged on the second handle 22, when the first sawing piece 11 and the second sawing piece 21 are in the closed state, the first recess 1213 and the second recess 2213 jointly form a through hole in communication with the cavity formed by the first sawing piece 11 and the second sawing piece 21. In this way, after the bone strip 5 is taken out, if the bone strip 5 cannot slide out of the cavity formed by the first sawing piece 11 and the second sawing piece 21 by itself, a top rod can be inserted through the through hole to push the bone strip 5 out of the cavity.
[0062] In one specific embodiment, the first groove 1213 is disposed on the first mounting block 121 and is arranged coaxially with the first mounting block 121, and the second groove 2213 is disposed on the second mounting block 221 and is arranged coaxially with the second mounting block 221.
[0063] As one specific implementation method, such as Figure 3 As shown, in this embodiment, the cross-sections of the first storage section 111 and the second storage section 211 are both semi-circular. The first sawing section 113 and the second sawing section 213 are inclined at both ends along the arc-shaped structure. When the first sawing member 11 and the second sawing member 21 are in the closed state, the first sawing section 113 and the second sawing section 213 form an opening 42 with one end facing forward.
[0064] Furthermore, such as Figure 1 As shown, a buckle 3 is fitted around the entire structure formed by the first sawing piece 11 and the second sawing piece 21. The buckle 3 has a limiting hole 31 for accommodating the first sawing piece 11 and the second sawing piece 21. The buckle 3 is located on the side of the hinge structure opposite to the ring saw structure and is used to limit the opening angle of the first sawing piece 11 and the second sawing piece 21.
[0065] Furthermore, such as Figure 4 and Figure 12 As shown, the limiting hole 31 includes a snap-fit portion 311 and a limiting portion 312, and snap-fit protrusions 32 are provided on both side walls of the limiting hole 31 between the limiting portion 312 and the snap-fit portion 311. The diameter of the snap-fit portion 311 is slightly smaller than the outer diameter of the first sawing piece 11 and the second sawing piece 21, and it is clamped and fixed to the first sawing piece 11 or the second sawing piece 21 by snap-fit, and the limiting portion 312 is directly opposite the opening end of the first sawing piece 11 or the second sawing piece 21. The central angle corresponding to the snap-fit portion 311 is greater than 180°.
[0066] Thus, when the first sawing piece 11 and the second sawing piece 21 are in the closed state, both the first sawing piece 11 and the second sawing piece 21 are engaged in the engaging portion 311 of the limiting hole 31. Since the minimum distance M between the two engaging protrusions 32 is less than the outer diameter of the first sawing piece 11 and the second sawing piece 21, the first sawing piece 11 and the second sawing piece 21 can form a stable closed device. When rotating the bone-removing ring saw, it is not necessary to apply opposite forces to the first handle 12 and the second handle 22 to maintain the closed state, which is convenient for operation. When the ring cutting is completed and bone needs to be removed, the first handle 12 and the second handle 22 are gripped tightly. At this time, the sawing piece (such as the one located on the opening side of the engaging portion 311) is engaged in the closed position. Figure 1As shown, the second sawing member 21 in this embodiment will pass the clamping protrusion 32 and enter the limiting portion 312, while the sawing member at the side of the blind end of the clamping portion 311 (such as the first sawing member 11) is still clamped in the clamping portion 311. Figure 1 As shown, the first sawing member 11 in this embodiment is still clamped in the clamping portion 311. In addition, since the diameter of the clamping portion 311 is slightly smaller than the outer diameter of the first sawing member 11 and the second sawing member 21, and the first sawing member 11 or the second sawing member 21 is clamped and fixed by clamping, when the bone ring saw is rotated, the buckle 3 will not rotate around the axis of the first sawing member 11 and the second sawing member 21.
[0067] Embodiment Two
[0068] The first sawing portion 113 or the second sawing portion 213 is inclined at both ends of the arc-shaped structure. When the first sawing member 11 and the second sawing member 21 are in the closed state, the first sawing portion 113 and the second sawing portion 213 form a large opening 42 with the opening facing the front side. The rest of the structure is the same as that of Embodiment One.
[0069] The other embodiments obtained by combining, splitting, recombining, etc. of the embodiments of the present application by those skilled in the art on the basis of the embodiments provided in the present application do not exceed the protection scope of the present application.
[0070] The above detailed description of the specific embodiments of the present application has explained the purpose, technical solutions and beneficial effects of the embodiments of the present application. The above is only a specific embodiment of the present application and does not limit the protection scope of the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.
Claims
1. A bone harvesting ring, comprising: The first sawing part (11) and the second sawing part (21) are in arc-shaped structure; The first sawing part (11) comprises a first storage part (111), a first hinged part (112) and a first sawing part (113) in sequence along the axial direction, and the end surface of the first sawing part (113) is provided with a first sawtooth structure (1131); The second sawing part (21) comprises a second storage part (211), a second hinged part (212) and a second sawing part (213) in sequence along the axial direction, and the end surface of the second sawing part (213) is provided with a second sawtooth structure (2131); The first hinged part (112) is hinged with the second hinged part (212) and forms a rotation axis; The first sawing part (11) and the second sawing part (21) can rotate around the rotation axis and form two working states of closing and opening; When in the closing state, the first sawing part (11) is parallel to the second sawing part (21); When in the opening state, the first storage part (111) and the second storage part (211) are separated and away from each other, and the first sawing part (113) and the second sawing part (213) are close to each other.
2. The bone harvest ring of claim 1, wherein: The two ends of the first hinged part (112) along the arc-shaped structure are respectively provided with hinged heads (1121), and the two ends of the second hinged part (212) along the arc-shaped structure are respectively provided with hinged grooves (2121) matched with the hinged heads (1121).
3. The bone harvest ring of claim 2, wherein: The edge surface of the hinged head (1121) is a conical surface with the rotation axis as the central axis, and the inclined directions of the edge surfaces of the two hinged heads (1121) are opposite, and the edge surface of the hinged groove (2121) is a conical surface matched with the edge surface of the hinged head (1121).
4. The bone harvest ring of claim 2, wherein: The hinged head (1121) is in arc-shaped structure, and the cylindrical surface where the inner side surface of the hinged head (1121) is located is the same cylindrical surface as the cylindrical surface where the inner side surface of the first hinged part (112) is located, and the cylindrical surface where the outer side surface of the hinged head (1121) is located is the same cylindrical surface as the cylindrical surface where the outer side surface of the first hinged part (112) is located.
5. The bone harvest ring of claim 1, wherein: The end of the first storage part (111) is provided with a first handle (12), and the end of the second storage part (211) is provided with a second handle (22).
6. A bone harvesting ring according to claim 5, wherein: The first handle (12) and the second handle (22) are in cross state.
7. The bone harvest ring of claim 5, wherein: The first handle (12) comprises a first mounting block (121), and the end of the first mounting block (121) away from the first sawing part (11) is provided with a first holding handle (122); the second handle (22) comprises a second mounting block (221), and the end of the second mounting block (221) away from the second sawing part (21) is provided with a second holding handle (222); when the first sawing part (11) and the second sawing part (21) are in the closing state, the first mounting block (121) and the second mounting block (221) jointly form a cylindrical structure.
8. The bone harvest ring of claim 5, wherein: The first handle (12) is provided with a first recess (1213), and the second handle (22) is provided with a second recess (2213); when the first sawing part (11) and the second sawing part (21) are in a closed state, the first recess (1213) and the second recess (2213) jointly form a through hole which is in communication with a cavity formed by the first sawing part (11) and the second sawing part (21).
9. The bone harvest ring of claim 1, wherein: Further comprising a buckle (3), the buckle (3) is provided with a limiting hole (31) for accommodating the first sawing part (11) and the second sawing part (21), and the buckle (3) is used for limiting the opening angle of the first sawing part (11) and the second sawing part (21).
10. The bone harvest ring of claim 9, wherein: The limiting hole (31) comprises a clamping part (311) and a limiting part (312), and a clamping protrusion (32) is arranged between the limiting part (312) and the clamping part (311) on the two side walls of the limiting hole (31), and the clamping part (311) is clamped on the first sawing part (11) or the second sawing part (21).