A variable-direction implant repair screwdriver assembly with a telescopic rod

Abstract

A variable-direction implant repair screwdriver assembly with a telescopic rod according to the present invention includes: a handle housing, an angle adjustment mechanism, a first rod, a second rod, and a tool bit; the first rod and the second rod form a telescopic rod structure; the adjustment unit of the angle adjustment mechanism includes a rotating shaft extension block, two handle core parts, four gears, and corresponding gear rotating shafts; the two handle core parts are hinged and rotated through a knob; the first handle core part includes a first gear and a first gear rotating shaft; the second handle core part includes a second gear, a third gear, a fourth gear, and corresponding rotating shafts; two end parts of the first gear rotating shaft are respectively connected to the rotating shaft extension block and the first gear, and the rotating shaft extension block is arranged in a non-circular channel; the first gear, the second gear, the third gear, and the fourth gear are sequentially engaged by teeth to achieve the purpose of personalized adjustment of the working angle, and ensure that the taking, placing, installation, and disassembly operations of repair components such as healing caps are not interfered by the soft and hard tissues in the oral cavity when performing operations in the posterior tooth area of the oral cavity.

Description

Technical Field

[0001] The present invention relates to a planting and repairing tool with a telescopic rod and variable-angle reverse operation, especially a variable-direction planting and repairing screwdriver assembly with a telescopic rod, so as to relieve the obstruction of the visual field and operation space in the oral cavity. Background Art

[0002] Currently, the well-known planting and repairing screwdriver is a rigid and non-deformable hand-held instrument. The tool bit is fitted into the screw hole of the repair part, the tool handle is the part held by the operator, and the tool rod connecting the two is a straight rod. The working direction is limited to the direction of the tool rod, and the taking, placing, screwing and unscrewing of the repair part can be completed on the screw hole of the implant. However, there are obstructions of hard and soft tissues in the oral cavities of many patients, and there is only a very small operation space and visual field. Generally, the traditional straight rod screwdriver cannot adapt to the oral anatomical environment. The hand-held tool handle part is located between the upper and lower dental arches, and the operation will be restricted by the hard and soft tissues around the implant, including the thickened buccal mucosa, adjacent teeth and even the opposing teeth, which brings obstacles to manual operation, easily causes the screwdriver and the repair part to fall off, and in severe cases, may even cause the patient to accidentally swallow or aspirate. Summary of the Invention

[0003] In order to overcome the deficiency that the existing traditional screwdriver cannot adapt to the narrow repair space in the oral cavity, the present invention provides a variable-direction planting and repairing screwdriver assembly with a telescopic rod. This screwdriver can not only change the working length to adapt to the limitations of the patient's opening degree and intermaxillary height, but also transfer the hand-held tool handle part of the operator from between the dental arches to the inherent oral cavity with a larger operation space, avoiding the obstruction of the hard and soft tissues in the patient's oral cavity to the hand-held part of the operator, and meeting the needs of oral implant repair work.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A variable-direction planting and repairing screwdriver assembly with a telescopic rod, comprising: a tool handle housing, an angle adjustment mechanism, a first tool rod, a second tool rod and a tool bit;

[0006] The tool handle housing is sleeved outside the angle adjustment mechanism, and the angle adjustment mechanism, the first tool rod, the second tool rod and the tool bit are connected in sequence; the first tool rod and the second tool rod form a telescopic rod structure; a retaining body is arranged at the end of the tool handle housing, and a non-circular channel communicating with the inner cavity of the tool handle housing is formed on the retaining body;

[0007] The angle adjustment mechanism includes at least one adjustment unit, and the adjustment unit includes a rotating shaft extension block, two tool handle inner cores, four gears and four gear rotating shafts; one of the tool handle inner cores is a cylinder, the other tool handle inner core is a semi-cylinder, and the two tool handle inner cores are hinged and rotated through a knob;

[0008] Among them, the first handle inner core part includes a first gear and a first gear rotating shaft; the second handle inner core part includes a second gear, a third gear, a fourth gear and corresponding rotating shafts; the two end parts of the first gear rotating shaft are respectively connected to a rotating shaft extension block and the first gear, and the rotating shaft extension block is arranged in the non-circular channel of the retainer.

[0009] The first gear, the second gear, the third gear and the fourth gear are sequentially engaged by teeth, and the first gear rotating shaft and the fourth gear rotating shaft are coaxially arranged, the second gear rotating shaft and the third gear rotating shaft are parallelly arranged, and the second gear rotating shaft is vertically intersected with the extension line of the first gear rotating shaft; the shaft of the knob passes through the geometric center of the intersection part of the first gear and the second gear, so that when the first handle inner core part rotates around the knob, the first gear and the second gear always remain in an engaged state.

[0010] As a further improvement of the present invention, the fourth gear is located near the bottom plane of the second handle inner core part, and the fourth gear rotating shaft passes through the bottom surface of the second handle inner core part through a connecting body and is connected to the first tool bar.

[0011] As a further improvement of the present invention, the first gear rotating shaft is connected to the rotating shaft extension block through a connecting body passing through the first handle inner core part; a part of the bottom of the first gear extends out of the bottom of the first handle inner core part.

[0012] As a further improvement of the present invention, after the handle housing is pulled out from the outside of the angle adjustment mechanism, the first handle inner core part can rotate around the knob, and an included angle is formed between the first handle inner core part and the second handle inner core part;

[0013] After the handle housing is reversely arranged, the non-circular channel of the retainer is connected to the rotating shaft extension block to extend the length of the screwdriver assembly.

[0014] As a further improvement of the present invention, an elastic locking structure is arranged at the end of the second tool bar, and the elastic locking structure includes a spring and a limit post; at least two limit posts are respectively arranged on two opposite surfaces of the second tool bar, and the two limit posts are connected by a spring;

[0015] The other end of the first tool bar is a sleeve, the first tool bar is sleeved on one end part of the second tool bar, and multiple rows of holes for the limit posts to pass through are arranged in the length direction of the first tool bar; the outer ends of the limit posts of the second tool bar pass through the holes and are connected to the first tool bar.

[0016] As a further improvement of the present invention, both the first tool bar and the second tool bar are cuboids, the first tool bar is a hollow body, and the second tool bar is a solid body.

[0017] As a further improvement of the present invention, a receiving cavity is arranged at the end of the second tool bar, the limit post extends out of the receiving cavity and extends to the outside of the second tool bar, the inner end of the limit post has a retaining piece, and the spring is arranged between the retaining pieces of the two limit posts in the receiving cavity.

[0018] As a further improvement of the present invention, the retainer is a magnetic retainer, the rotating shaft extension block is a magnetic block, and the retainer and the rotating shaft extension block have opposite magnetic polarities.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] For the screwdriver assembly of the present invention, aiming at the defect that the traditional implant repair screwdriver cannot meet the requirements of implant repair in the posterior tooth area, the integrated structure of the traditional screwdriver is designed into an adjustable length and angle component structure. The handle shell is made into a detachable structure to extend the operating part of the handle. The inner core part of the handle is set to be two angled parts. A hollow structure is appropriately arranged inside the inner core part of the handle to accommodate the planetary gear set. The meshing working state of the four groups of gears is used as the transmission device after the inner core part of the handle changes the angle. The purpose of personalized adjustment of the working angle is achieved, ensuring that the operation of placing and removing repair components such as healing caps in the posterior tooth area in the mouth is not interfered by the soft and hard tissues in the mouth. The shank is set in the form of two telescopable rods that can slide relative to each other and is retained by an elastic locking structure, so that the working length of the screwdriver assembly can be changed to adapt to different opening degrees and intermaxillary heights. The present invention can achieve a working state at one angle through self-assembly and direction change, can relieve the limitations of the operating space and operating vision in the mouth, and can also avoid the obstruction of the buccal soft tissue to manual operation, realizing simple, visual and safe operation. Description of the Drawings

[0021] Figure 1 is the overall external view of the present invention.

[0022] Figure 2 is the longitudinal sectional structure diagram of the shank contraction structure.

[0023] Figure 3 is the structure diagram of the planetary gear.

[0024] Figure 4 is the longitudinal sectional structure diagram of the rotatable end of the inner core part of the handle.

[0025] Figure 5 is the longitudinal sectional structure diagram of the connection between the fourth gear and the shank.

[0026] Figure 6 is the longitudinal sectional structure diagram of the inner core part of the handle.

[0027] Figure 7 is the directional combination structure diagram of the handle shell and the inner core.

[0028] In the figure, 1. shank housing, 2. magnetic retainer, 3. shaft extension block, 4. first cutter bar, 5. second cutter bar, 6. hole, 7. elastic locking structure, 8. cutter head, 9. spring, 10. first gear, 11. second gear, 12. third gear, 13. fourth gear, 14. first gear shaft, 15. second gear shaft, 16. third gear shaft, 17. fourth gear shaft, 18. knob, 19 first shank core part, 20. second shank core part, 21. first gear connector, 22. fourth gear connector. Detailed implementation mode

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Embodiment 1

[0031] As Figures 1 to 7 shown, a variable-direction planting and repairing screwdriver assembly with a telescopic rod according to the present invention is characterized by comprising: a shank housing 1, an angle adjustment mechanism, a first cutter bar 4, a second cutter bar 5 and a cutter head 8;

[0032] The shank housing 1 is sleeved outside the angle adjustment mechanism, and the angle adjustment mechanism, the first cutter bar 4, the second cutter bar 5 and the cutter head 8 are connected in sequence; the first cutter bar 4 and the second cutter bar 5 form a telescopic rod structure; the shank housing 1 can be pulled out from the outside of the angle adjustment mechanism.

[0033] A magnetic retainer 2 is arranged at the end of the shank housing 1, and a non-circular channel communicating with the inner cavity of the shank housing 1 is formed on the magnetic retainer 2;

[0034] The angle adjustment mechanism includes at least one adjustment unit, and the adjustment unit includes a shaft extension block 3, two shank core parts, four gears and four gear shafts; one of the shank core parts is a cylinder, and the other shank core part is a semi-cylinder, and the two shank core parts are hinged and rotated through a knob 18;

[0035] Among them, the first shank core part 19 includes a first gear 10 and a first gear shaft 14; the second shank core part 20 includes a second gear 11, a third gear 12, a fourth gear 13 and corresponding shafts; the two ends of the first gear shaft 14 are respectively connected to the shaft extension block 3 and the first gear 10, and the shaft extension block 3 is arranged in the non-circular channel of the magnetic retainer 2; the cooperation between the shaft extension block 3 and the non-circular channel restricts the rotation of the first gear shaft 13.

[0036] The first gear 10, the second gear 11, the third gear 12 and the fourth gear 13 are engaged with each other in sequence, and the first gear rotating shaft 14 and the fourth gear rotating shaft 17 are coaxially arranged. The second gear rotating shaft 15 and the third gear rotating shaft 16 are parallel to each other, and the extension line of the second gear rotating shaft 15 is perpendicular to the first gear rotating shaft 14. After the first gear 10, the second gear 11, the third gear 12 and the fourth gear 13 cooperate with each other, the direction of the transmission torque remains unchanged during rotation and still maintains linear transmission.

[0037] The shaft of the knob 18 passes through the geometric center of the intersection of the first gear 10 and the second gear 11, so that when the inner core part 19 of the first handle rotates around the knob 18, the first gear 10 and the second gear 11 always remain in an engaged state. Since the inner core parts of the two handles are hinged and rotated through the knob 18, after adjusting the angles of the inner core parts of the two handles by rotation, surgical operations at special oral angles can be carried out. At the same time, since the first gear 10 and the second gear 11 always remain in an engaged state, the bolt can be further tightened by rotating the angle adjustment mechanism.

[0038] As a preferred solution, the fourth gear 13 is located near the bottom plane of the inner core part 20 of the second handle. The fourth gear rotating shaft 17 passes through the bottom surface of the inner core part 20 of the second handle through the connecting body 22 and is connected to the first tool bar 4. The first gear rotating shaft 14 is connected to the rotating shaft extension block 3 through the connecting body 21 passing through the inner core part 19 of the first handle.

[0039] As a preferred solution, after the handle housing 1 is pulled out from the outside of the angle adjustment mechanism, the inner core part 19 of the first handle can rotate around the knob 18, and an included angle is formed between the inner core part 19 of the first handle and the inner core part 20 of the second handle.

[0040] After the handle housing 1 is reversely arranged, the non-circular channel of the magnetic retainer 2 is connected to the rotating shaft extension block 3 to extend the length of the screwdriver assembly. The length of the screwdriver assembly delays the length of the handle housing 1.

[0041] As a preferred solution, an elastic locking structure 7 is arranged at the end of the second tool bar 5. The elastic locking structure 7 includes a spring 9 and a limiting post. At least two limiting posts are respectively arranged on two opposite surfaces of the second tool bar 5, and the two limiting posts are connected by a spring 9. The other end of the first tool bar 4 is a sleeve, the first tool bar 4 is sleeved on one end of the second tool bar 5, and a plurality of rows of holes 6 for the limiting posts to pass through are arranged in the length direction of the first tool bar 4. The outer ends of the limiting posts of the second tool bar 5 pass through the holes 6 and are connected to the first tool bar 4.

[0042] As a preferred solution, both the first tool shank 4 and the second tool shank 5 are cuboids. The first tool shank 4 is a hollow body, and the second tool shank 5 is a solid body. A receiving cavity is provided at the end of the second tool shank 5. The inner end of the limiting post has a retaining piece. The outer part of the limiting post extends out of the receiving cavity and extends to the outside of the second tool shank 5. The spring 9 is arranged between the two retaining pieces of the limiting posts in the receiving cavity.

[0043] The retainer 2 is a magnetic retainer, and the rotating shaft extension block 3 is a magnetic block. The retainer 2 and the rotating shaft extension block 3 have opposite magnetic polarities.

[0044] Since the gear meshing in this application is for transmitting torque and adjusting the bending of the tool shank, it is required that the first gear 10 and the second gear 11 maintain the meshing state of the tooth parts during the bending process, and the third gear 12 and the fourth gear 13 also satisfy the condition that the tooth parts remain meshed.

[0045] The principle of the present invention is as follows: The screwdriver tool shank is set into two parts. The inside of the handle end is hollow, and the tool tip end can retract into the inside of the handle end. An elastic locking structure containing a spring is arranged inside the tool shank at the tool tip end. Through holes are arranged at different lengths on the tool shank at the handle end to accommodate the elastic locking structure. After pressing back the elastic locking structure, the length of the rod can be shortened. When reaching the hole, the elastic locking structure is released and springs back, protruding from the hole to the surface of the tool shank to fix the length.

[0046] The shape of the tool shank is cuboid, which reduces the rotational force on the elastic locking structure. The tool tip part is cylindrical, which does not affect the fitting of the tool tip and the screw hole of the repair part. The screwdriver handle is set as a two-layer nested structure. The outer shell structure of the screwdriver handle is made into a detachable form. It can not only be used as the outer shell of the screwdriver handle, but also can be removed and reversely installed as an extended part of the handle. A cylindrical structure is arranged at the end of the outer layer handle, and a cubic negative structure is arranged inside, which can accommodate the cubic positive structure part protruding from the outer surface in the core part of the handle. The nested structure here is set as a magnetic body, and the combined structure of the inner and outer layers of the handle can be fixed through friction and magnetism.

[0047] The inner core part of the screwdriver handle is a hollow structure, with four planetary gears arranged inside. They are engaged in a series state where the gear planes are perpendicular to each other. The rotating shaft of the first gear at the handle end extends to the handle end and protrudes beyond the inner core part of the handle to form a cubic male structure that fits with the handle housing. The rotating shaft and the cubic male structure are connected through a connecting part smaller in diameter than the rotating shaft and pass through the inner core part of the handle, but are not fixedly connected to the inner core part of the handle. The rotation of the first gear independent of the inner core part of the handle can be controlled through this male structure. The rotating shaft of the fourth gear at the tool bar end is connected to the tool bar through the same small connector and can drive the tool bar to rotate. The second and third gears perpendicular to the two are used as transmission gears to achieve the purpose of driving the other three gears through one of the gears. Taking the line connecting the projection points of the geometric centers of the intersecting parts of the first gear and the second gear on the surface of the inner core part of the handle as the rotating shaft, two knobs are provided at the position where this rotating shaft passes through the inner core part of the handle. The inner core part of the handle is divided into two parts by a plane passing through the line connecting the two knobs and parallel to the bottom plane of the handle. One part is set as a semi-cylindrical shape and can rotate relative to the other part around this knob. The first gear is located at the rotatable end of the handle, and the second, third, and fourth gears are located at the non-rotatable end of the handle. The two parts of the inner core part of the handle can form an angle through the knob, changing the working direction and ensuring that the gear set is always engaged. Finally, the outer structure of the handle is connected to the extended end of the rotating shaft of the gear at the handle end through friction and magnetism. After changing the direction through the inner structure of the handle, the purpose of continuous operation in the changed direction state is achieved.

[0048] Embodiment 2

[0049] The overall structure of the screwdriver assembly is as Figures 1 to 7 shown. The following is the specific structure of a specific screwdriver assembly.

[0050] The appearance consists of a handle housing 1, a first tool bar 4, a second tool bar 5, and a tool bit 8. There is a magnetic retainer 2 at the end of the handle housing 1, and inside it contains an extended block 3 with a cubic female structure for accommodating the rotating shaft of the first gear. The first tool bar 4 is square and hollow, the second tool bar 5 is solid, and the tool bit 8 is cylindrical and integrated with the second tool bar. An elastic locking structure 7 is provided at the end of the second tool bar, which can pass through the hole 6 on the first tool bar 4 as the connection between the two tool bars. Embodiments for adjusting the length and working angle can be carried out on this structure basis.

[0051] In the embodiment of changing the working length, such as Figure 1 , 2As shown, the first tool shank 4 has a hollow structure. The overall outer diameter of the second tool shank 5 is slightly smaller than the inner diameter of the hollow structure of the first tool shank 4, and it can be retracted into the first tool shank 4 and then slide inside the first tool shank 4. The two overlap each other to change the working length of the screwdriver. Three groups of holes 6 are evenly arranged on the first tool shank, with two holes in each group, located on the opposite sides of the first tool shank 4 respectively, serving as marking points for different working lengths. The end of the second tool shank 5 is provided with a hollow hidden compartment as a receiving cavity. An elastic locking structure 7 is placed inside the hidden compartment of the receiving cavity. The two ends of the elastic locking structure 7 are set as cylindrical bodies, and the diameter of the cylindrical bodies is the same as that of the holes 6 on the first tool shank. The inside is connected by a spring 9 with a diameter larger than the holes. The spring 9 provides the elastic force for the relative inward and outward movement of the cylindrical bodies with respect to the surface of the tool shank and the force to limit the dislocation of the cylindrical bodies from the tool shank. When the spring 9 is in a relaxed state, the cylindrical bodies can pass through the holes 6 and protrude from the surface of the first tool shank 4 to limit the movement of the second tool shank relative to the first tool shank. Changing the working length of the screwdriver is the process of moving the elastic locking structure 7 at the end of the second tool shank 5 from one hole 6 to the next hole 6. Before moving, first use an external force to press the cylindrical bodies on both sides into the inside of the tool handle. After the retaining force of the overlapping part of the first tool shank 4 and the second tool shank 5 by the cylindrical bodies disappears, slide the second tool shank 5 along the hollow structure inside the first tool shank 4 from the previous hole 6 to the next hole 6. After taking the position, remove the external force intervention. The spring 9 can push the cylindrical bodies at both ends out of the holes 6 to stop the relative movement trend of the two parts of the tool shank. Since the diameter of the spring is larger than the diameter of the holes, the relaxed spring 9 will abut against the inner wall of the tool shank to prevent the cylindrical bodies connected to the spring from leaving the tool shank from both sides. The elastic locking structure is provided with two cylindrical bodies on both sides of the tool shank. When accidentally touching one of the cylindrical bodies during the operation and making it enter the tool shank, there is another one that can remain in the hole as an insurance retaining device to prevent the working length from changing against the operator's will. Finally, the elastic locking structure can limit the sliding of the two parts of the tool shank through the holes, so as to stably retain the working length.

[0052] In Figure 6 , 7 the embodiment of changing the working angle shown, the handle housing 1 can be dislocated from the handle core part by applying force, exposing the handle core part, which contains four meshed gears and their rotating shafts, as Figure 3 shown. The rotating shaft of the first gear becomes an integral body with the external rotating shaft extension block 3 through the connecting body 21 that penetrates the surface of the handle core part, as Figure 4 shown. The planes of the second and third gears are perpendicular to the bottom plane of the handle core part, and the rotating shafts are parallel to the bottom plane of the handle core part. The fourth gear is located near the bottom plane of the handle core part, and its rotating shaft passes through the connecting body 22 and penetrates the bottom plane of the handle core part to be connected to the first tool shank 4, and can drive the rotation of the tool shank, as Figure 5As shown in the figure. The axes of the first gear and the fourth gear are both located on the center line of the inner core of the tool handle. The second and third gears are located on one side of the center line, keeping the four gears meshed and not affecting the normal rotation state. The inner core of the tool handle is divided into two relatively rotatable parts. One is the first tool handle inner core part 19 with only half a columnar body for easy rotation, which contains the first gear 10 and its axis 14 inside; the other is the second tool handle inner core part 20 connected to the tool bar, which contains the second gear 11, the third gear 12, the fourth gear 13 and the corresponding axes inside. The two parts of the tool handle inner core are connected by a pair of knobs 18. The axis of the knob 18 passes through the geometric center of the intersection of the first gear and the second gear, so that when the first tool handle inner core part 19 rotates around the knob 18, the first gear 10 and the second gear 11 always remain in an engaged state. According to the specific situation in the mouth, the first tool handle inner core part 19 can be rotated around the knob 18 to adjust the angle between it and the second tool handle inner core part 20. Since the first tool handle inner core part 19 has only half a columnar body, its working angle can even reach 90 degrees.

[0053] In the reverse direction, the retainer 2 at the end of the tool handle housing 1 is fitted with the axis extension block 3 at the end of the first tool handle inner core part 19, and is retained by magnetism and friction. The tool handle housing 1 is used as an extension rod of the first tool handle inner core part 19, and the rotation of the first gear 10 can be driven by the tool handle housing 1 through the fitting with the axis extension block 3 of the first gear. Since neither the tool handle housing 1 nor the axis extension block 3 is fixedly connected to the first tool handle inner core part 19, no rotational force is generated on the first tool handle inner core part 19 during this process. Adjust the angle between the first tool handle inner core part 19 and the second tool handle inner core part 20 according to the needs of the operator, so as to change the angle between the hand-held tool handle housing 1 and the tool bar. By rotating the tool handle housing 1, the transmission of the gear set is driven to realize the tightening and loosening of the repair parts.

[0054] The above is only the preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Those skilled in the art should understand that without departing from the spirit and principle of the present invention, the present invention can be modified or simply replaced, and these modifications and replacements also fall within the scope defined by the submitted claims.

Claims

1. A variable-direction implant restoration screwdriver assembly with a telescopic rod, characterized in that, it includes: a handle housing (1), an angle adjustment mechanism, a first tool rod (4), a second tool rod (5) and a tool bit (8); The handle housing (1) is sleeved outside the angle adjustment mechanism, and the angle adjustment mechanism, the first tool rod (4), the second tool rod (5) and the tool bit (8) are connected in sequence; the first tool rod (4) and the second tool rod (5) form a telescopic rod structure; a retaining body (2) is arranged at the end of the handle housing (1), and a non-circular channel communicating with the inner cavity of the handle housing (1) is formed on the retaining body (2); The angle adjustment mechanism includes at least one adjustment unit, and the adjustment unit includes a rotating shaft extension block (3), two handle inner core parts, four gears and four gear rotating shafts; one of the handle inner core parts is a cylinder, and the other handle inner core part is a semi-cylinder, and the two handle inner core parts are hinged and rotated through a knob (18); Among them, the first handle inner core part (19) includes a first gear (10) and a first gear rotating shaft (14); the second handle inner core part (20) includes a second gear (11), a third gear (12), a fourth gear (13) and corresponding rotating shafts; the two ends of the first gear rotating shaft (14) are respectively connected to the rotating shaft extension block (3) and the first gear (10), and the rotating shaft extension block (3) is arranged in the non-circular channel of the retaining body (2); The first gear (10), the second gear (11), the third gear (12) and the fourth gear (13) are sequentially engaged by teeth, and the first gear rotating shaft (14) and the fourth gear rotating shaft (17) are coaxially arranged, the second gear rotating shaft (15) and the third gear rotating shaft (16) are parallelly arranged, and the second gear rotating shaft (15) is perpendicular to the extension line of the first gear rotating shaft (14); the shaft of the knob (18) passes through the geometric center of the intersection part of the first gear (10) and the second gear (11), so that when the first handle inner core part (19) rotates around the knob (18), the first gear (10) and the second gear (11) always remain in an engaged state; An elastic locking structure (7) is arranged at the end of the second tool rod (5), and the elastic locking structure (7) includes a spring (9) and a limiting column; at least two limiting columns are respectively arranged on two opposite surfaces of the second tool rod (5), and the two limiting columns are connected by a spring (9); The retaining body (2) is a magnetic retaining body, the rotating shaft extension block (3) is a magnetic block, and the retaining body (2) and the rotating shaft extension block (3) have opposite magnetic polarities.

2. The variable-direction implant restoration screwdriver assembly with a telescopic rod according to claim 1, characterized in that, the fourth gear (13) is located near the bottom plane of the second handle inner core part (20), and the fourth gear rotating shaft (17) passes through the bottom surface of the second handle inner core part (20) through a connecting body (22) and is connected to the first tool rod (4).

3. The variable-direction implant restoration screwdriver assembly with a telescopic rod according to claim 1, characterized in that, The first gear rotating shaft (14) is connected to the rotating shaft extension block (3) through a connecting body (21) passing through the inner core part (19) of the first tool handle; a bottom part of the first gear (10) extends out of the bottom of the inner core part (19) of the first tool handle.

4. A variable-direction implant restoration screwdriver assembly with a telescopic rod according to claim 1, characterized in that, after the tool handle housing (1) is pulled out from the outside of the angle adjustment mechanism, the inner core part (19) of the first tool handle can rotate around the knob (18), and an included angle is formed between the inner core part (19) of the first tool handle and the inner core part (20) of the second tool handle; after the tool handle housing (1) is arranged in the reverse direction, the non-circular channel of the retainer (2) is connected to the rotating shaft extension block (3) to extend the length of the screwdriver assembly.

5. A variable-direction implant restoration screwdriver assembly with a telescopic rod according to claim 1, characterized in that, the other end of the first tool rod (4) is a sleeve, the first tool rod (4) is sleeved on one end part of the second tool rod (5), and multiple rows of holes (6) for the limit posts to pass through are arranged in the length direction of the first tool rod (4); the outer ends of the limit posts of the second tool rod (5) pass through the holes (6) and are connected to the first tool rod (4).

6. A variable-direction implant restoration screwdriver assembly with a telescopic rod according to claim 1, characterized in that, both the first tool rod (4) and the second tool rod (5) are rectangular parallelepipeds, the first tool rod (4) is a hollow body, and the second tool rod (5) is a solid body.

7. A variable-direction implant restoration screwdriver assembly with a telescopic rod according to claim 1, characterized in that, a receiving cavity is arranged at the end of the second tool rod (5), the outer part of the limit post extends out of the receiving cavity and extends to the outside of the second tool rod (5), a retaining piece is arranged at the inner end of the limit post, and the spring (9) is arranged between the two retaining pieces of the limit posts in the receiving cavity.

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