Multifunctional guider for olecranal fracture and osteotomy

Abstract

The utility model discloses a multifunctional guider for olecranal fracture and osteotomy, and belongs to the technical field of surgical auxiliary instruments. Comprising a guide fixing plate and a guide assembly, the guide fixing plate is provided with a positioning hole, a fixing hole and olecranon hooks, the guide fixing plate is an arc-shaped plate capable of being attached to the olecranon end of the ulna, the positioning hole and the fixing hole transversely and longitudinally penetrate through the guide fixing plate respectively, the two olecranon hooks are symmetrically arranged on the guide fixing plate, and the olecranon hooks are arranged on the guide assembly. A guide assembly is arranged on the guide fixing plate between the two olecranon hooks, the guide assembly comprises two sighting device sleeves, and a V-shaped osteotomy guide opening is further formed in the guide fixing plate; the olecranon fracture reduction and fixation device can assist in olecranon fracture reduction and fixation, accurate screw placement and needle insertion, meanwhile, accurate osteotomy can be achieved during olecranon osteotomy, follow-up reduction and fixation are completed, and good clinical prognosis is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of multifunctional guides, in particular to a kind of multifunctional guide for ulna olecranon fracture and osteotomy, belong to surgical auxiliary equipment technical field. BACKGROUND

[0002] Ulna olecranon fracture is one of common fractures in adults, and ulna olecranon transverse fracture is more common, which is intra-articular fracture involving semilunar incisure. Anatomical reduction is an effective measure to prevent joint instability and prevent osteoarthritis and other complications, which often requires surgical treatment. The most common surgical internal fixation method is Kirschner wire tension band fixation, which can convert the tension of brachial triceps pulled at the posterior cortex of the fracture into pressure at the fracture end, thereby ensuring early activity of the elbow joint and avoiding joint stiffness. The AO organization (Arbeitsgemeinschaft für Osteosynthesefragen) recommends bilateral cortical tension band internal fixation technology, which has better tensile resistance through the proximal cortex of the olecranon and the distal ulnar palmar cortex, reducing the risk of fracture displacement and needle withdrawal failure. The placement of Kirschner wire after reduction of ulna olecranon is basically based on the surgical experience of the operator, and the direction and angle of Kirschner wire insertion may have human error. Unideal Kirschner wire position can lead to reduced holding force of Kirschner wire or even withdrawal failure, or cause injury to the anterior ulnar artery, median nerve, and supinator radioulnar joint fusion. When the clinician is not familiar with the anatomy of ulna olecranon, manual placement may require multiple attempts, which inevitably increases the operation time, increases the number of patient radiation exposures, and even causes the fracture to be more comminuted, increases the difficulty of surgery and affects the prognosis.

[0003] In addition, the surgical treatment of AO-C type distal humeral fractures has always been a focus and difficulty in the field of orthopedics. The common surgical approach through ulna olecranon osteotomy is usually feasible and necessary, and the olecranon osteotomy approach can better expose the articular surface, providing a good surgical field for the fracture end and articular surface. It can be used to anatomically reduce intra-articular fracture fragments under direct vision, achieve reliable internal fixation, and create good conditions for early postoperative rehabilitation training for patients. Ulna olecranon osteotomy still requires Kirschner wire tension band fixation. Surgery is basically based on the surgical experience of the operator to manually saw or chisel the ulna olecranon, making it difficult to control the length and angle of the osteotomy, which can cause uneven fracture surfaces. At the same time, the cut ulna olecranon is easy to rotate and displace, and the upper and lower parts of the cut surface are easy to slide and misplace. The above situations are not conducive to subsequent precise docking and fixation, affecting postoperative healing. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a kind of multifunctional guide for ulna olecranon fracture and osteotomy.

[0005] The utility model discloses a technical scheme adopted is: design a kind of for ulna olecranon fracture and osteotomy's multifunctional guider, it includes guiding fixed plate and guiding assembly, the guiding fixed plate is provided with positioning hole, fixed hole and eagle hook, the guiding fixed plate is the arc plate that can be pasted with ulna olecranon end, the positioning hole and fixed hole are respectively transversely and longitudinally through guiding fixed plate, two eagle hooks are symmetrically provided on the guiding fixed plate, guiding assembly is provided on the guiding fixed plate between two eagle hooks, the guiding assembly includes two gunsight sleeve, the guiding fixed plate is also provided with the osteotomy guiding mouth of V-shaped, when using, the eagle hook can pressurize and hook ulna olecranon part, and cooperate fixed hole to use kirschner wire or point type reduction forceps to fix guiding fixed plate, then 2.0mm kirschner wire is drilled in the gunsight sleeve and positioning hole respectively to carry out ulna olecranon fracture fixation, or carry out osteotomy through osteotomy guiding mouth.

[0006] Further, the design also includes guiding sleeve, the guiding sleeve end is provided with external thread, the positioning hole is provided with internal thread, the guiding sleeve is screwed in positioning hole and used.

[0007] Further, the positioning hole is provided with two side-by-side, the fixed hole is provided with four, the guiding fixed plate on the both sides of osteotomy guiding mouth is respectively provided with two adjacent fixed holes.

[0008] Further, the guiding fixed plate is provided with the positioning suspension arm that is upturned, the guiding assembly is installed on the positioning suspension arm and used, the angle of the guiding assembly after being installed on the positioning suspension arm can be adjusted.

[0009] Further, the positioning suspension arm is provided with arc slide, the guiding assembly also includes parallel guider and fixed bolt, the parallel guider is provided with arc sliding slot, locking screw hole and sleeve hole, the parallel guider is slidably connected with arc slide through arc sliding slot to realize the angle-adjustable of guiding assembly, the fixed bolt is locked parallel guider after passing through locking screw hole and abutting to the arc slide, the gunsight sleeve is inserted in the sleeve hole.

[0010] Further, the parallel guider is provided with observation port that is through to arc sliding slot, the arc slide on the one side of observation port is provided with 10-30 ° angle scale, the parallel guider on the one side of observation port is also provided with reading arrow.

[0011] Further, the arc slide on the side of fixed bolt is also provided with arc blocking slot recessed in the surface of arc slide, the fixed bolt is inserted into the arc blocking slot and abutting.

[0012] Further, the parallel guider is provided with six mutually parallel sleeve holes, three are arranged on the left and right sides, and two gunsight sleeves are inserted in two sleeve holes.

[0013] Further, the back of the guiding fixed plate is provided with a convex strip, and the osteotomy guiding port penetrates through the convex strip.

[0014] Further, the V-shaped included angle of the osteotomy guiding port is 130-150°, and the included angle between the inlet direction of the osteotomy guiding port and the guiding fixed plate is 10-25°.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The aiming device sleeve of the guiding fixed plate and the guiding assembly can be matched to perform the ulna olecranon fracture wire tension band fixation, and the osteotomy guiding port arranged on the guiding fixed plate can be used for simultaneously performing the ulna olecranon osteotomy and completing subsequent reduction fixation, so that better clinical prognosis is achieved.

[0017] The angle of the aiming device sleeve of the adjustable guiding assembly can be adjusted, the position of the aiming device sleeve can be adjusted according to the difference of the ulna olecranon of different patients, the application range is wide, the Kirschner pin implantation of the ulna olecranon fracture wire tension band fixation can be simply and accurately assisted, the positioning assistance is convenient, the operation and implementation are simple, the operation needle setting efficiency can be improved, and then the olecranon fracture can be better fixed. In addition, the osteotomy guiding port arranged on the guiding fixed plate realizes the integration of positioning and guiding, the osteotomy efficiency can be improved, the failure rate of osteotomy and the damage rate of the wound surface can be reduced, and the osteotomy angle is accurate.

[0018] The utility model can assist the ulna olecranon fracture reduction fixation, accurately position and guide the needle implantation, and can accurately perform osteotomy when the ulna olecranon osteotomy is performed, complete subsequent reduction fixation, and achieve better clinical prognosis. A kind of surgical instrument with simple structure and convenient to use is provided for clinic.

[0019] The utility model can assist the ulna olecranon reduction fracture, and can accurately position and guide according to different patient individuals and anatomical differences;Not only can increase operation accuracy and safety, reduce failure rate and iatrogenic injury rate, but also have small surgical trauma, and can be widely applied. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0021] Figure 1 For the utility model axis measurement Figure 1 SCHEMATIC VIEW.

[0022] Figure 2 The utility model discloses a shaft Figure 2 Schematic diagram.

[0023] Figure 3 The utility model discloses an exploded view schematic diagram.

[0024] Figure 4 The utility model discloses a schematic diagram of being placed on ulna.

[0025] In the figure: 1, guide fixed plate;2, guide sleeve;3, guide assembly;4, positioning hole;5, collimator sleeve;6, eagle hook;7, fixed hole;8, positioning suspension arm;9, arc slide;10, parallel guider;11, fixed bolt;12, arc slide groove;13, sleeve hole;14, observation port;15, reading arrow;16, arc blocking groove;17, protruding strip;18, osteotomy guide port. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantage of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0027] In the description of the utility model, it is necessary to explain that, unless there is explicit provision and limitation, if the terms "installation", "connection", "connect" are used, should be broad understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements. For the person skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0028] Embodiment 1

[0029] As Figures 1-4The utility model provides a multifunctional guide for ulna olecranon fracture and osteotomy, including guide fixed plate 1 and guide assembly 3, be provided with positioning hole 4, fixed hole 7 and olecranon hook 6 on guide fixed plate 1, guide fixed plate 1 is the arc plate that can be with the olecranon end of ulna close, when using, it is fixed on ulna, and Kirschner wire is hit through guide assembly 3. Positioning hole 4 and fixed hole 7 respectively traverse and longitudinally traverse guide fixed plate 1, two olecranon hooks 6 are symmetrically provided on guide fixed plate 1, guide assembly 3 is provided on guide fixed plate 1 between two olecranon hooks 6, guide assembly 3 includes two aiming sleeve 5 for setting Kirschner wire, V-shaped osteotomy guide port 18 is further provided on guide fixed plate 1, when using, the olecranon hook 6 can be pressurized and be hooked to the olecranon part of ulna, and Kirschner wire or point type reduction forceps are used with fixed hole 7 to fix guide fixed plate 1, then 2.0mm Kirschner wire is drilled in aiming sleeve 5 and positioning hole 4 respectively to carry out ulna olecranon fracture fixation, or osteotomy is carried out through osteotomy guide port 18.

[0030] The multifunctional guide provided by the embodiment further comprises a guide sleeve 2, the end of the guide sleeve 2 is provided with external threads, the positioning hole 4 is provided with internal threads (not shown in the figure), the guide sleeve 2 is screwed into the positioning hole 4 for use, the installation is simple and stable, and the guide sleeve 2 provides directional effect when Kirschner wire is drilled in the positioning hole 4, so that the Kirschner wire is placed more accurately and quickly.

[0031] In the embodiment, two positioning holes 4 are arranged side by side on the guide fixed plate 1 to be suitable for different patients, both of the two positioning holes 4 pass through both sides of the guide fixed plate 1, the fixed hole 7 is provided with four, two adjacent fixed holes 7 are arranged on both sides of the guide fixed plate 1 of the osteotomy guide port 18 respectively to facilitate the fixation of the guide fixed plate 1 for use. It should be noted that more positioning holes 4 and fixed holes 7 can also be arranged, which are within the scope of protection of the embodiment.

[0032] Embodiment 2

[0033] The embodiment is further optimization and refinement of the structure of the multifunctional guide on the basis of embodiment 1, specifically:

[0034] The multifunctional guide provided by the embodiment is provided with a positioning suspension arm 8 that is upwardly tilted by 30-45° (preferably 40°) on the guide fixed plate 1, the guide assembly 3 is installed on the positioning suspension arm 8 for use, and the angle of the guide assembly 3 can be adjusted after being installed on the positioning suspension arm 8, so that the angle of the aiming sleeve 5 can be adjusted, multi-angle sliding adjustment is carried out, and it can be ensured that the needle entry point of the aiming sleeve 5 from the tip of the olecranon (the upper part of the brachial triceps muscle insertion point) is unchanged.

[0035] In the embodiment, the angle-adjustable structure of the guide assembly 3 after being installed on the positioning suspension arm 8 is also disclosed. The positioning suspension arm 8 is provided with an arc-shaped slide 9. The guide assembly 3 further comprises a parallel guide 10 and a fixing bolt 11. The parallel guide 10 is provided with an arc-shaped sliding groove 12, a locking screw hole and a sleeve hole 13. The parallel guide 10 is slidably connected with the arc-shaped slide 9 through the arc-shaped sliding groove 12 to adjust the angle of the guide assembly 3. The fixing bolt 11 is tightly abutted against the arc-shaped slide 9 after penetrating through the locking screw hole to lock the parallel guide 10. The sleeve hole 13 is provided with the sighting device sleeve 5. Of course, other structures can be adopted to adjust the angle of the guide assembly 3 after being installed on the positioning suspension arm 8.

[0036] Example 3

[0037] The embodiment is further optimization and refinement of the connection structure of the guide assembly 3 and the positioning suspension arm 8 based on the embodiment 2. Specifically, the parallel guide 10 is provided with an observation port 14 penetrating through the arc-shaped sliding groove 12. The arc-shaped slide 9 on one side of the observation port 14 is provided with an angle scale of 10-30°. The parallel guide 10 on one side of the observation port 14 is further provided with a reading arrow 15. The angle of the guide assembly 3 can be quickly and accurately adjusted to realize efficient and accurate needle insertion.

[0038] Example 4

[0039] The embodiment is further optimization and refinement of the connection structure of the guide assembly 3 and the positioning suspension arm 8 based on the embodiment 3. Specifically, the arc-shaped slide 9 on one side of the fixing bolt 11 is further provided with an arc-shaped blocking groove 16 recessed in the surface of the arc-shaped slide 9. The fixing bolt 11 is inserted into the arc-shaped blocking groove 16 and tightly abutted. When the fixing bolt 11 is always in the arc-shaped blocking groove 16, the guide assembly 3 will not be separated from the arc-shaped slide 9 during the process of sliding adjustment and fixation, which can avoid falling.

[0040] Example 5

[0041] The embodiment is further optimization and refinement of the structure of the parallel guide 10 based on the embodiment 4. Specifically,

[0042] The parallel guide 10 is provided with six sleeve holes 13 parallel to each other, three on each side. Two sleeve holes 13 are provided with the sighting device sleeve 5, which can facilitate the selection of different positions for needle insertion according to different patients and flexible and convenient use.

[0043] Example 6

[0044] The embodiment is further optimization and refinement of the structure of the guide fixing plate 1 based on the embodiment 5. Specifically,

[0045] The back of the guiding fixed plate 1 is provided with a protruding strip 17, and the osteotomy guiding hole 18 penetrates through the protruding strip 17, so that the supporting area of the osteotomy guiding hole 18 to an osteotomy tool or the like is increased, and the osteotomy operation is facilitated.

[0046] In the embodiment, the V-shaped included angle of the osteotomy guiding hole 18 is 130-150°, for example, 130°, 135°, 140°, 145°, 150° or the like, and preferably 140°; and the included angle between the inlet direction of the osteotomy guiding hole 18 and the guiding fixed plate 1 is 10-25°, for example, 10°, 15°, 20°, 25° or the like, and preferably 20°.

[0047] Specific implementation method:

[0048] 1. The utility model is used for ulna olecranon fracture wire tension band fixation, and the operation steps are as follows:

[0049] 1.1 adopt the incision behind the elbow, cut the skin vertically with the fracture end as the center, and the length is about 6cm. Cut the fascia and periosteum, and expose the fracture end. Remove the joint cavity blood, fracture block and soft tissue embedded in the fracture end.

[0050] 1.2 straighten the elbow joint, reduce the fracture end, use the utility model device to be pasted on the back of the ulna olecranon part, and the olecranon hook 6 is pressed and hooks the ulna olecranon part. Use the point type reduction forceps, and the clamping passes through the round hole in the back of the guiding fixed plate 1 to realize the pressurized fixation of the fracture end.

[0051] 1.3 according to the position of the fracture end, the fracture end is 1-4cm away from the fracture end, preferably 4cm, the suitable threaded positioning hole 4 on both sides of the guiding fixed plate 1 is selected, the guiding sleeve 2 is screwed in, the 2.0mm kirschner wire is drilled through the guiding sleeve 2, and the temporary fixation of the fracture end can be realized.

[0052] 1.4 install the parallel guide 10, screw the fixed bolt 11 into the locking screw hole of the arc-shaped sliding groove 12 part of the parallel guide 10, fix the parallel guide 10 in the recessed arc-shaped groove of the positioning suspension arm 8, slide the arc-shaped sliding way 9 through the tightness of the fixed bolt 11, carry out 10-30° sliding adjustment, adjust the suitable angle of the parallel guide 10 according to the size of the ulna olecranon of the patient, select the suitable sleeve hole 13, and insert two aiming device sleeves 5;

[0053] 1.5 respectively drill 2.0mm kirschner wires through the two aiming device sleeves 5, and slightly back off the kirschner wire during the drilling process when the kirschner wire passes through the opposite ulna metacarpal cortex and obtains the second breakthrough feeling.

[0054] 1.6 Use C-arm X-ray machine to confirm that the fracture reduction is satisfactory, the position and depth of the Kirschner wire are satisfactory.

[0055] 1.7 Remove the Kirschner wire of the guiding and fixing plate 1, remove the positioning sight sleeve 5 and the guiding and fixing plate 1, etc., use two 1.0 mm diameter steel wires, one horizontally through the lower part of the two Kirschner wires and the deep surface of the triceps brachii muscle, and the other horizontally through the reserved hole at the distal end of the bone fracture. After the two steel wires are crossed to form an "8" shape, the steel wires are tightened on both sides at the same time and are twisted tightly to complete the compression. The steel wire knot is cut short and is attached to the bone surface. The tail end of the Kirschner wire is bent and cut short, is buried in the deep surface of the triceps brachii muscle and is knocked to attach to the bone surface. The wound is washed and sutured.

[0056] 2, The utility model is used for the transolecranon osteotomy, and the operation steps are as follows:

[0057] 2.1 An incision is made at the back of the elbow, the fascia is incised to expose and isolate the ulnar nerve, and the proximal olecranon part of the ulna is exposed.

[0058] 2.2 The device is attached to the back of the olecranon part of the ulna, and the olecranon hook 6 hooks the olecranon part of the ulna to realize the proximal fixation of the osteotomy guiding and fixing plate 1 and the ulna.

[0059] 2.3 The osteotomy is preferably selected at the bare area part of the olecranon without cartilage, the apex of the olecranon osteotomy guiding hole 18 on the back of the osteotomy guiding and fixing plate 1 is directed to the distal end "V" shape, and the included angle is 140°. The osteotomy "V" shape guiding hole is protruded from the fixing plate, and the angle between the osteotomy plane and the vertical surface of the bare area cutting line is 20°. The apex of the "V" shape of the guiding hole is 2 cm away from the tip of the olecranon of the ulna.

[0060] 2.4 Two 2.0 Kirschner pins are drilled into the round hole on the distal back side of the "V" shape osteotomy guiding hole 18 of the guiding and fixing plate 1 to realize the distal fixation of the guiding and fixing plate 1 and the ulna (through the proximal and distal fixation of the guiding and fixing plate 1 and the ulna, the loosening or error in the osteotomy process can be avoided).

[0061] 2.5 The osteotomy of the olecranon of the ulna is performed through the "V" shape osteotomy guiding hole 18 protruded from the back of the guiding and fixing plate 1 using an osteotome or a swing saw.

[0062] 2.6 The Kirschner pin of the guiding and fixing plate 1 is removed, the guiding and fixing plate 1 is removed, and the olecranon of the ulna is turned up to the proximal end, so that the distal articular surface of the humerus can be better exposed and a good surgical field of the articular surface can be provided.

[0063] 2.7 After the fixation of the distal humerus fracture or the intra-articular surgery is completed, the tension band fixation of the olecranon of the ulna is completed according to the operation steps of 1.2-1.7 described above.

[0064] Further, in the description of the present application, unless otherwise specified, if the terms "a plurality of", "a plurality of", "a plurality of" are used, the meaning of two or more than two, "a plurality of", "a plurality of", "a plurality of" is one or more than one. In the description of the present application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "internal", "external" and other indicated orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, structure and operation, therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second", "third" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0065] The specific embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A multifunctional guide for ulnar olecranon fractures and osteotomies, characterized by: The application relates to a guiding fixed plate and a guiding assembly, the guiding fixed plate is provided with positioning holes, fixing holes and eagle beak hooks, the guiding fixed plate is an arc-shaped plate which can be attached to the end of an ulna eagle beak, the positioning holes and the fixing holes respectively transversely and longitudinally penetrate the guiding fixed plate, two eagle beak hooks are symmetrically arranged on the guiding fixed plate, a guiding assembly is arranged on the guiding fixed plate between the two eagle beak hooks, the guiding assembly comprises two sighting device sleeves, and a bone-cutting guiding port in a V shape is further arranged on the guiding fixed plate; during use, the eagle beak hooks can be used to press and hook the ulna eagle beak part, and Kirschner pins or point type reduction forceps are used in cooperation with the fixing holes to fix the guiding fixed plate, then 2.0mm Kirschner pins are respectively drilled into the sighting device sleeves and the positioning holes to perform ulna eagle beak fracture fixation, or bone-cutting is performed through the bone-cutting guiding port.

2. The multifunctional guide of claim 1, wherein: The guiding sleeve is further provided with external threads at the end, the positioning hole is provided with internal threads, and the guiding sleeve is screwed into the positioning hole.

3. The multifunctional guide of claim 2, wherein: The positioning holes are arranged side by side in two, the fixing holes are arranged in four, and two adjacent fixing holes are respectively arranged on the guiding fixed plate on the two sides of the bone-cutting guiding port.

4. The multifunctional guide of claim 3, wherein: The guiding fixed plate is provided with a positioning suspension arm which is upwardly raised, the guiding assembly is installed on the positioning suspension arm for use, and the angle of the guiding assembly can be adjusted after the guiding assembly is installed on the positioning suspension arm.

5. The multifunctional guide of claim 4, wherein: The positioning suspension arm is provided with an arc-shaped slide, the guiding assembly further comprises a parallel guide and a fixing bolt, the parallel guide is provided with an arc-shaped sliding groove, a locking screw hole and a sleeve hole, the parallel guide is slidably connected with the arc-shaped slide through the arc-shaped sliding groove to realize angle adjustment of the guiding assembly, the fixing bolt is abutted to the arc-shaped slide after penetrating through the locking screw hole to lock the parallel guide, and the sighting device sleeve is arranged in the sleeve hole.

6. The multifunctional guide of claim 5, wherein: An observation port which penetrates the arc-shaped sliding groove is formed in the parallel guide, an angle scale of 10-30 DEG is arranged on the arc-shaped slide on one side of the observation port, and a reading arrow is further arranged on the parallel guide on one side of the observation port.

7. The multifunctional guide of claim 6, wherein: An arc-shaped blocking groove which is recessed in the surface of the arc-shaped slide is further arranged on the arc-shaped slide on the side of the fixing bolt, and the fixing bolt is extended into the arc-shaped blocking groove and abutted.

8. The multifunctional guide of claim 7, wherein: Six sleeve holes which are parallel to each other are arranged on the parallel guide, three sleeve holes are arranged on the left side and the right side respectively, and the sighting device sleeves are arranged in two sleeve holes.

9. The multifunctional guide of any of claims 1-8, wherein: A convex strip is arranged on the back of the guiding fixed plate, and the bone-cutting guiding port penetrates the convex strip.

10. The multifunctional guide of claim 9, wherein: The included angle of the V-shaped bone-cutting guiding port is 130-150 DEG, and the included angle between the inlet direction of the bone-cutting guiding port and the guiding fixed plate is 10-25 DEG.

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