Minimally invasive closed osteotomy device and method

Abstract

The invention discloses a minimally invasive closed osteotomy device and method. The device comprises a connecting hole osteotomy drilling guider and an osteotomy knife, wherein the connecting hole osteotomy drilling guider is installed on an annular outer fixing frame and used for guiding a drill bit, and the osteotomy knife is used for cutting at the drilling position. The method comprises the steps that firstly, an annular outer fixing frame is installed through an outer fixing needle, and a drilling scheme of osteotomy group holes is formulated; 2, drilling a plurality of osteotomy drill holes in the current drilling position by using a connecting hole osteotomy drill hole guider; 3, drilling a plurality of osteotomy drilling holes in the next drilling position by using the connecting hole osteotomy drilling guider until the drilling of the osteotomy group holes is completed; fourthly, osteotomy is conducted along the drilled osteotomy group holes through an osteotomy knife. The drilling of the osteotomy group holes can be accurately and quickly realized, high-precision and low-trauma osteotomy can be realized, the osteotomy position can be accurately determined without perspective, small-incision minimally-invasive accurate osteotomy is realized, the osteotomy effect of the osteotomy group holes is clear, and the later-stage healing is quick.

Description

Technical Field

[0001] The present invention belongs to the technical field of orthopedic medicine, and in particular relates to a minimally invasive closed osteotomy device and method. Background Art

[0002] Currently, proximal tibial osteotomy has been widely used to treat patients with lower limb deformity and symptomatic varus-valgus osteoarthritis. Lower limb deformity and varus-valgus osteoarthritis of the medial and lateral compartments are the best indications for proximal tibial osteotomy. After osteotomy, a digital external fixator is used to fix the bone, and the force line is gradually adjusted to transfer to the relatively normal compartment on the other side, reducing the load and knee pain, delaying the destruction of the affected compartment, and delaying or avoiding joint replacement. Precise minimally invasive closed osteotomy technology has a huge impact on the healing of the osteotomy site and the subsequent treatment results. Among the existing osteotomy technologies, osteotomy plates are often used for osteotomy. The osteotomy guide grooves on the osteotomy plates cannot be adjusted, and the osteotomy plates cannot be completely matched with the patient's diseased parts. During the operation, the osteotomy plates are installed to the surgical site relying solely on the doctor's experience, and the positioning of the osteotomy guide grooves is inaccurate. The existing osteotomy technology has the disadvantages of inaccurate osteotomy position, fracture splitting, large trauma, and slow healing. Due to its inaccurate positioning, there is also the possibility that the osteotomy position is too high, destroying the fixation strength, or the osteotomy position is too low, affecting bone healing. In addition, the clinical operation is relatively cumbersome, the operation time is long, and it is difficult to promote and apply. Therefore, a minimally invasive closed osteotomy device and method should be provided. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a minimally invasive closed osteotomy device and method in view of the deficiencies in the above-mentioned prior art. The device and method have a reasonable design. Through the mutual cooperation between the annular external fixator, the connected hole osteotomy drilling guide and the osteotomy knife, not only can the drilling of the osteotomy holes be accurately and quickly realized, but also high-precision and low-traumatic osteotomy can be realized. The osteotomy position can be accurately determined without fluoroscopy, and minimally invasive and precise osteotomy can be realized with a small incision. The osteotomy effect of the osteotomy holes is clear and the later healing is fast, and no damage to the bone marrow is caused. The operation is simple and convenient, and it is easy to promote and apply.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a minimally invasive closed osteotomy device, characterized in that it comprises a continuous hole osteotomy drilling guide installed on an annular external fixator for guiding the drill bit and an osteotomy knife for cutting at the drilling position;

[0005] The connecting hole osteotomy drilling guide comprises a connecting hole guide mounted on an annular external fixator and a guide sleeve mounted in cooperation with the connecting hole guide, the connecting hole guide comprises a guide block and a connecting rod vertically arranged on the top surface of the guide block, a connecting hole guide channel is provided on the guide block, and the connecting hole guide channel is formed by M circular guide holes sequentially penetrated in a radial direction, wherein M is a positive integer, the guide sleeve comprises a first guide sleeve matched with the circular guide hole and a second guide sleeve eccentrically arranged at one end of the first guide sleeve, a drill mounting hole coaxially arranged with the second guide sleeve is provided through the first guide sleeve and the second guide sleeve, and a handle is provided at the other end of the second guide sleeve;

[0006] The osteotomy knife comprises a rectangular knife body, one end of which is provided with a guide handle matched with the connecting hole guide channel, and the other end of which is provided with a triangular blade.

[0007] The above-mentioned minimally invasive closed osteotomy device is characterized in that the axes of the multiple circular guide holes are parallel, the spacing between the axes of any two adjacent circular guide holes is equal, and the axis of the first guide sleeve is located on the hole wall of the drill mounting hole.

[0008] The above-mentioned minimally invasive closed osteotomy device is characterized in that: a clamping rod section and a threaded rod section are coaxially arranged on the top end of the connecting rod in sequence, the clamping rod section cooperates with the through hole on the annular external fixator, and a locking nut is installed on the threaded rod section.

[0009] The present invention also provides a minimally invasive closed osteotomy method, characterized in that the method comprises the following steps:

[0010] Step 1: Use external fixation pins to install the circular external fixator and develop a drilling plan for the osteotomy holes:

[0011] The osteotomy group holes include a plurality of osteotomy drill holes sequentially arranged tangentially along the circumferential direction of the bone or a plurality of osteotomy drill holes sequentially arranged at intervals along the circumferential direction of the bone; the drilling scheme of the osteotomy group holes is to drill the osteotomy group holes sequentially along the circumferential direction of the bone without passing through the bone marrow;

[0012] Step 2: Install a continuous-hole osteotomy drilling guide on the annular external fixator, and use the continuous-hole osteotomy drilling guide to drill multiple osteotomy holes at the current drilling position:

[0013] The guide sleeves are sequentially installed in the M circular guide holes, the guide sleeves are manually rotated, the position of the drill bit installation hole is adjusted, and then a drill bit is inserted into the drill bit installation hole, and a plurality of osteotomy holes are drilled on the bone using the drill bit;

[0014] Step 3, disassembling and adjusting the installation position of the continuous-hole osteotomy drilling guide on the annular external fixator, and using the continuous-hole osteotomy drilling guide to drill multiple osteotomy holes at the next drilling position until the drilling of the osteotomy group holes is completed;

[0015] Step 4: Remove the guide sleeve of the connecting hole osteotomy drilling guide, install an osteotomy knife in the connecting hole guide channel, and use the osteotomy knife to perform osteotomy along the osteotomy group holes that have been drilled:

[0016] By adjusting the installation position of the connecting hole osteotomy drilling guide on the annular external fixator, osteotomy is performed at a plurality of osteotomy positions in sequence along the circumferential direction of the bone.

[0017] The above osteotomy method is characterized in that: in step 2, when the multiple osteotomy drill holes of the osteotomy hole group are sequentially arranged tangentially along the circumferential direction of the bone, the drilling process of the multiple osteotomy drill holes includes:

[0018] Step 201, install the guide sleeve in any circular guide hole of the connecting hole guide channel, make the front end of the second guide sleeve of the guide sleeve contact the bone, rotate the handle to make the handle face right and keep it horizontal, then insert the drill bit into the drill bit installation hole, use the drill bit to drill the first osteotomy hole on the bone, then withdraw the drill bit;

[0019] Step 202, rotating the handle so that the handle faces left and remains horizontal, then inserting the drill bit into the drill bit mounting hole, using the drill bit to drill the second osteotomy hole on the bone, and then withdrawing the drill bit;

[0020] Step 203, repeating steps 201 and 202, installing the guide sleeves in M ​​circular guide holes in sequence, and drilling the osteotomy holes on the bones using a drill bit until the drilling of multiple osteotomy holes at the current drilling position is completed.

[0021] The above osteotomy method is characterized in that: in step 2, when the multiple osteotomy drill holes of the osteotomy hole group are sequentially arranged at intervals along the circumferential direction of the bone, the drilling process of the multiple osteotomy drill holes includes:

[0022] The guide sleeves are sequentially installed in the multiple circular guide holes of the connecting hole guide channel, so that the front end of the second guide sleeve of the guide sleeve is in contact with the bone, the handle is rotated so that the handle is oriented in the same direction each time and remains horizontal, and the multiple osteotomy holes are sequentially drilled on the bone using a drill bit.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. The present invention installs a continuous-hole osteotomy drilling guide on an annular external fixator, and under the support of the annular external fixator and the accurate positioning of the continuous-hole osteotomy drilling guide, a drill is used to drill a group of osteotomy holes on the bone, and then the continuous-hole osteotomy drilling guide is used again for accurate positioning, and an osteotomy knife is used to perform osteotomy at the position of the drilled osteotomy group holes, which has high positioning accuracy, is easy to operate, and saves time and effort.

[0025] 2. The continuous hole osteotomy drilling guide of the present invention comprises a continuous hole guide and a guide sleeve, the continuous hole guide comprises a guide block and a connecting rod vertically arranged on the top surface of the guide block, a continuous hole guide channel is opened on the guide block, the continuous hole guide channel is formed by M circular guide holes sequentially penetrating in a radial direction, the guide sleeve comprises a first guide sleeve and a second guide sleeve, in actual use, the guide sleeve is installed in any circular guide hole of the continuous hole guide channel, the installation position of the guide sleeve can be limited by the mutual cooperation between the first guide sleeve and the circular guide hole, and the position of the drill bit mounting hole in the circular guide hole can be adjusted by rotating the first guide sleeve in the circular guide hole, that is, the drill bit is drilled into the drill bit mounting hole, and the position of the osteotomy drill hole drilled on the bone is not unique; using the continuous hole osteotomy drilling guide, a plurality of osteotomy drill holes sequentially arranged tangentially along the circumferential direction of the bone or a plurality of osteotomy drill holes sequentially arranged at intervals along the circumferential direction of the bone can be drilled.

[0026] 3. The present invention provides an osteotomy knife that cooperates with the connecting hole guide channel. The osteotomy knife has a guide handle that cooperates with the connecting hole guide channel. In actual use, the installation accuracy of the osteotomy knife can be limited through the mutual cooperation between the guide handle and the connecting hole guide channel, and the accuracy of the osteotomy knife drilling into the bone can be guaranteed.

[0027] 4. The osteotomy method of the present invention is reasonably designed, easy to operate, and easy to promote and apply.

[0028] To sum up, the present invention can not only accurately and quickly realize the drilling of osteotomy holes, but also realize high-precision and low-traumatic osteotomy through the mutual cooperation between the annular external fixator, the connected hole osteotomy drilling guide and the osteotomy knife. The osteotomy position can be accurately determined without fluoroscopy, and small incision minimally invasive and precise osteotomy can be achieved. The osteotomy effect of the osteotomy holes is clear and the later healing is fast, and no damage to the bone marrow is caused. The operation is simple and convenient, and it is easy to promote and apply.

[0029] The present invention is further described in detail below through the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the continuous hole osteotomy drilling guide of the present invention.

[0031] Figure 2 for Figure 1 AA section view.

[0032] Figure 3 This is a diagram showing the use status of the continuous hole osteotomy drilling guide of the present invention.

[0033] Figure 4 It is a schematic structural diagram of the osteotomy knife of the present invention.

[0034] Figure 5 for Figure 4 BB cross-sectional view.

[0035] Figure 6 It is a diagram showing the osteotomy knife of the present invention in use.

[0036] Figure 7 Flow chart of the osteotomy method of the present invention.

[0037] Figure 8 This is a diagram of the use state of the guide sleeve of the continuous hole osteotomy drilling guide of the present invention, with the handle facing right and kept horizontal.

[0038] Fig. 9 This is a diagram of the use state of the guide sleeve of the continuous hole osteotomy drilling guide of the present invention, with the handle facing left and kept horizontal.

[0039] Fig.10 It is a structural schematic diagram of the drilling process of multiple osteotomy drill holes when the multiple osteotomy drill holes are sequentially arranged tangentially along the circumferential direction of the bone according to the present invention.

[0040] Description of reference numerals:

[0041] 1-1—guide block; 1-2—connecting rod; 1-3—clamping rod section;

[0042] 1-4—threaded rod section; 2—connecting hole guide channel; 3-1—first guide sleeve;

[0043] 3-2—Second guide sleeve; 3-3—Handle; 4—Drill bit mounting hole;

[0044] 5—drill bit; 6—locking nut; 7—annular external fixator;

[0045] 8—external fixation block; 9—external fixation pin; 10—bone;

[0046] 11—osteotomy drilling hole; 12-1—rectangular knife body; 12-2—guide knife handle;

[0047] 12-3—Triangular blade. DETAILED DESCRIPTION

[0048] like Figures 1 to 6A minimally invasive closed osteotomy device is shown, comprising a continuous-hole osteotomy drilling guide mounted on an annular external fixator 7 for guiding a drill bit 5 and an osteotomy knife for cutting at a drilling position;

[0049] The connecting hole osteotomy drilling guide includes a connecting hole guide installed on an annular external fixator 7 and a guide sleeve installed in cooperation with the connecting hole guide, the connecting hole guide includes a guide block 1-1 and a connecting rod 1-2 vertically arranged on the top surface of the guide block 1-1, a connecting hole guide channel 2 is opened on the guide block 1-1, and the connecting hole guide channel 2 is formed by M circular guide holes that penetrate in sequence in the radial direction, wherein M is a positive integer, the guide sleeve includes a first guide sleeve 3-1 that matches the circular guide hole and a second guide sleeve 3-2 that is eccentrically arranged at one end of the first guide sleeve 3-1, a drill bit mounting hole 4 that is coaxially arranged with the second guide sleeve 3-2 is opened through the first guide sleeve 3-1 and the second guide sleeve 3-2, and a handle 3-3 is arranged at the other end of the second guide sleeve 3-1;

[0050] The osteotomy knife comprises a rectangular knife body 12-1, one end of which is provided with a guide handle 12-2 matched with the connecting hole guide channel 2, and the other end of which is provided with a triangular blade 12-3.

[0051] In this embodiment, a continuous-hole osteotomy drilling guide is installed on the annular external fixator 7. Under the support of the annular external fixator 7 and the accurate positioning of the continuous-hole osteotomy drilling guide, a drill bit 5 is used to drill a group of osteotomy holes on the bone 10. After that, the continuous-hole osteotomy drilling guide is used again for accurate positioning, and an osteotomy knife is used to perform osteotomy at the position of the drilled group of osteotomy holes. The positioning accuracy is high, the operation is simple, and it saves time and effort.

[0052] In this embodiment, the connecting hole osteotomy drilling guide includes a connecting hole guide and a guide sleeve, the connecting hole guide includes a guide block 1-1 and a connecting rod 1-2 vertically arranged on the top surface of the guide block 1-1, a connecting hole guide channel 2 is opened on the guide block 1-1, and the connecting hole guide channel 2 is formed by M circular guide holes that pass through in sequence in the radial direction, and the guide sleeve includes a first guide sleeve 3-1 and a second guide sleeve 3-2. During actual installation, the connecting rod 1-2 is vertically installed on the annular external fixator 7 so that the extension direction of the connecting hole guide channel 2 can intersect with the bone 10, the first guide sleeve 3-1 and the second guide sleeve 3-2 are eccentrically arranged, and the drill bit mounting hole 4 is coaxially arranged with the second guide sleeve 3-2, that is, the drill bit mounting hole 4 is coaxially arranged with the second guide sleeve 3-2, that is, the drill bit mounting hole 4 is coaxially arranged with the second guide sleeve 3-2. The hole 4 is eccentrically arranged with the first guide sleeve 3-1. In actual use, the guide sleeve is installed in any circular guide hole of the connecting hole guide channel 2. The installation position of the guide sleeve can be limited by the mutual cooperation between the first guide sleeve 3-1 and the circular guide hole, and the position of the drill mounting hole 4 in the circular guide hole can be adjusted by rotating the first guide sleeve 3-1 in the circular guide hole, that is, the drill bit 5 is drilled into the drill mounting hole 4, and the position of the osteotomy drill hole 11 drilled on the bone 10 is not unique; using the connecting hole osteotomy drill guide, a plurality of osteotomy drill holes 11 arranged tangentially in sequence along the circumferential direction of the bone 10 or a plurality of osteotomy drill holes 11 arranged at intervals in sequence along the circumferential direction of the bone 10 can be drilled.

[0053] like Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment, an osteotomy tool that cooperates with the connecting hole guide channel 2 is provided, and the osteotomy tool has a guide handle 12-2 that cooperates with the connecting hole guide channel 2. During actual use, the installation accuracy of the osteotomy tool can be limited by the mutual cooperation between the guide handle 12-2 and the connecting hole guide channel 2, and the accuracy of the osteotomy tool drilling into the bone 10 can be ensured.

[0054] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the axes of the plurality of circular guide holes are parallel, the spacing between the axes of any two adjacent circular guide holes is equal, and the axis of the first guide sleeve 3 - 1 is located on the hole wall of the drill mounting hole 4 .

[0055] In this embodiment, a clamping rod section 1-3 and a threaded rod section 1-4 are coaxially arranged at the top of the connecting rod 1-2 in sequence, the clamping rod section 1-3 cooperates with the through hole on the annular external fixer 7, and a locking nut 6 is installed on the threaded rod section 1-4.

[0056] like Figure 7As shown, the present invention also provides a minimally invasive closed osteotomy method, which comprises the following steps:

[0057] Step 1: Use the external fixation pins 9 to install the annular external fixator 7 and formulate a drilling plan for the osteotomy holes:

[0058] The osteotomy group holes include a plurality of osteotomy drill holes 11 sequentially arranged tangentially along the circumferential direction of the bone 10 or a plurality of osteotomy drill holes 11 sequentially arranged at intervals along the circumferential direction of the bone 10; the drilling scheme of the osteotomy group holes is to drill the osteotomy group holes sequentially along the circumferential direction of the bone 10 without passing through the bone marrow;

[0059] Step 2: Install a continuous-hole osteotomy drilling guide on the annular external fixator 7, and use the continuous-hole osteotomy drilling guide to drill multiple osteotomy drill holes 11 at the current drilling position:

[0060] The guide sleeves are sequentially installed in the M circular guide holes, the guide sleeves are manually rotated, the position of the drill mounting hole 4 is adjusted, and then the drill bit 5 is inserted into the drill mounting hole 4, and the multiple osteotomy holes 11 are drilled on the bone 10 by using the drill bit 5;

[0061] Step 3, disassembling and adjusting the installation position of the continuous-hole osteotomy drilling guide on the annular external fixator 7, and using the continuous-hole osteotomy drilling guide to drill multiple osteotomy drill holes 11 at the next drilling position until the drilling of the osteotomy group holes is completed;

[0062] Step 4: Remove the guide sleeve of the connecting hole osteotomy drilling guide, install an osteotomy knife in the connecting hole guide channel 2, and use the osteotomy knife to perform osteotomy along the osteotomy group holes that have been drilled:

[0063] By adjusting the installation position of the connecting hole osteotomy drilling guide on the annular external fixator 7, osteotomy is performed at multiple osteotomy positions in sequence along the circumferential direction of the bone 10.

[0064] like Figure 8 , Fig. 9 and Fig.10 As shown, in this embodiment, in step 2, when the multiple osteotomy drill holes 11 of the osteotomy hole group are sequentially arranged tangentially along the circumferential direction of the bone 10, the drilling process of the multiple osteotomy drill holes 11 includes:

[0065] Step 201, install the guide sleeve in any circular guide hole of the connecting hole guide channel 2, make the front end of the second guide sleeve 3-2 of the guide sleeve contact the bone 10, rotate the handle 3-3, make the handle 3-3 face right and keep it horizontal, then drill the drill bit 5 into the drill bit installation hole 4, use the drill bit 5 to drill the first osteotomy drill hole 11 on the bone 10, then withdraw the drill bit 5;

[0066] Step 202, rotating the handle 3-3 so that the handle 3-3 faces left and remains horizontal, then inserting the drill bit 5 into the drill bit mounting hole 4, and using the drill bit 5 to drill the second osteotomy drill hole 11 on the bone 10, and then withdrawing the drill bit 5;

[0067] Step 203, repeating steps 201 and 202, installing the guide sleeves in M ​​circular guide holes in sequence, and drilling the osteotomy holes 11 on the bone 10 using the drill bit 5 until the drilling of multiple osteotomy holes 11 at the current drilling position is completed.

[0068] like Figure 8 or Fig. 9 As shown, in this embodiment, in step 2, when the multiple osteotomy drill holes 11 of the osteotomy hole group are sequentially arranged at intervals along the circumferential direction of the bone 10, the drilling process of the multiple osteotomy drill holes 11 includes:

[0069] The guide sleeve is installed in the multiple circular guide holes of the connecting hole guide channel 2 in sequence, so that the front end of the second guide sleeve 3-2 of the guide sleeve is in contact with the bone 10, and the handle 3-3 is rotated so that the direction of the handle 3-3 is the same each time and remains horizontal, and the multiple osteotomy holes 11 are drilled in sequence on the bone 10 using the drill bit 5.

[0070] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A minimally invasive closed osteotomy device, characterized in that: It comprises a continuous-hole osteotomy drilling guide installed on an annular external fixator (7) for guiding a drill bit (5) and an osteotomy knife for cutting at the drilling position; The connecting hole osteotomy drilling guide comprises a connecting hole guide mounted on an annular external fixator (7) and a guide sleeve mounted in cooperation with the connecting hole guide, the connecting hole guide comprising a guide block (1-1) and a connecting rod (1-2) vertically arranged on the top surface of the guide block (1-1), the guide block (1-1) is provided with a connecting hole guide channel (2), the connecting hole guide channel (2) is formed by M circular guide holes sequentially penetrated in a radial direction, wherein M is a positive integer, the guide sleeve comprises a first guide sleeve (3-1) matched with the circular guide hole and a second guide sleeve (3-2) eccentrically arranged at one end of the first guide sleeve (3-1), the first guide sleeve (3-1) and the second guide sleeve (3-2) are provided with a drill mounting hole (4) coaxially arranged with the second guide sleeve (3-2), and the other end of the second guide sleeve (3-1) is provided with a handle (3-3); The osteotomy knife comprises a rectangular knife body (12-1), one end of which is provided with a guide knife handle (12-2) matching with the connecting hole guide channel (2), and the other end of which is provided with a triangular blade (12-3).

2. A minimally invasive closed osteotomy device according to claim 1, characterized in that: The axes of the plurality of circular guide holes are parallel, the distance between the axes of any two adjacent circular guide holes is equal, and the axis of the first guide sleeve (3-1) is located on the hole wall of the drill bit mounting hole (4).

3. A minimally invasive closed osteotomy device according to claim 1, characterized in that: The top end of the connecting rod (1-2) is coaxially provided with a clamping rod section (1-3) and a threaded rod section (1-4) in sequence; the clamping rod section (1-3) matches with a through hole on an annular external fixing frame (7); and a locking nut (6) is installed on the threaded rod section (1-4).

4. An osteotomy method using the minimally invasive closed osteotomy device according to claim 1, characterized in that: The method comprises the following steps: Step 1: Use the external fixation pin (9) to install the annular external fixator (7) and formulate a drilling plan for the osteotomy group holes: The osteotomy group holes include a plurality of osteotomy drill holes (11) sequentially arranged tangentially along the circumferential direction of the bone (10) or a plurality of osteotomy drill holes (11) sequentially arranged at intervals along the circumferential direction of the bone (10); the osteotomy group hole drilling scheme is to drill the osteotomy group holes sequentially along the circumferential direction of the bone (10) without passing through the bone marrow; Step 2: Install a continuous-hole osteotomy drilling guide on the annular external fixator (7), and use the continuous-hole osteotomy drilling guide to drill multiple osteotomy drill holes (11) at the current drilling position: The guide sleeves are sequentially installed in the M circular guide holes, the guide sleeves are manually rotated, the position of the drill bit mounting hole (4) is adjusted, and then the drill bit (5) is inserted into the drill bit mounting hole (4), and the drill bit (5) is used to drill the multiple osteotomy holes (11) on the bone (10); Step 3, disassembling and adjusting the installation position of the continuous-hole osteotomy drilling guide on the annular external fixator (7), and using the continuous-hole osteotomy drilling guide to drill multiple osteotomy drill holes (11) at the next drilling position until the drilling of the osteotomy group holes is completed; Step 4: Remove the guide sleeve of the connecting hole osteotomy drilling guide, install an osteotomy knife in the connecting hole guide channel (2), and use the osteotomy knife to perform osteotomy along the osteotomy holes that have been drilled: By adjusting the installation position of the connecting hole osteotomy drilling guide on the annular external fixator (7), osteotomy is performed in sequence at a plurality of osteotomy positions along the circumferential direction of the bone (10).

5. The osteotomy method according to claim 4, characterized in that: In step 2, when the multiple osteotomy drill holes (11) of the osteotomy hole group are sequentially arranged tangentially along the circumferential direction of the bone (10), the drilling process of the multiple osteotomy drill holes (11) includes: Step 201, install the guide sleeve in any circular guide hole of the connecting hole guide channel (2), make the front end of the second guide sleeve (3-2) of the guide sleeve contact the bone (10), rotate the handle (3-3), make the handle (3-3) face right and keep it horizontal, then insert the drill bit (5) into the drill bit installation hole (4), use the drill bit (5) to drill the first osteotomy drill hole (11) on the bone (10), and then withdraw the drill bit (5); Step 202, rotating the handle (3-3) so that the handle (3-3) faces left and remains horizontal, then inserting the drill bit (5) into the drill bit mounting hole (4), using the drill bit (5) to drill the second osteotomy drill hole (11) on the bone (10), and then withdrawing the drill bit (5); Step 203, repeating steps 201 and 202, installing the guide sleeves in M ​​circular guide holes in sequence, and using the drill bit (5) to drill the osteotomy holes (11) on the bone (10), until the drilling of multiple osteotomy holes (11) at the current drilling position is completed.

6. The osteotomy method according to claim 4, characterized in that: In step 2, when the multiple osteotomy drill holes (11) of the osteotomy hole group are sequentially arranged at intervals along the circumferential direction of the bone (10), the drilling process of the multiple osteotomy drill holes (11) includes: The guide sleeve is sequentially installed in the plurality of circular guide holes of the connecting hole guide channel (2), so that the front end of the second guide sleeve (3-2) of the guide sleeve contacts the bone (10), the handle (3-3) is rotated so that the handle (3-3) is oriented in the same direction each time and remains horizontal, and a plurality of osteotomy drill holes (11) are sequentially drilled on the bone (10) using a drill bit (5).

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