Electric wrench for orthopedic surgery

Abstract

The present invention relates to the technical field of medical wrenches, and discloses an electric wrench for orthopedic surgery, comprising a handle, a tightening member arranged on one side of the handle, a mounting block arranged on the top of the handle, a fixed sleeve arranged on the top of the mounting block, and a display screen arranged on the side of one end of the handle, and also comprising a locking component arranged on the top of the fixed sleeve, and a driving component arranged at the bottom of the locking component; the pressing assembly comprises a pressing groove in an annular array provided on the side wall of the fixed sleeve, a rotating block provided in the middle of the pressing block, a movable groove provided inside the rotating block, and an abutment plate provided at the bottom of the movable groove. The tightening degree is improved by providing the locking component and the driving component, and when fully tightened, the driving plate directly slides with the fixed plate to avoid blowing up the nail rod system, and the tightening degree of the nail rod system is greatly improved under the premise of ensuring safety, thereby reducing the labor intensity of the operator.

Description

Technical Field

[0001] The invention relates to the technical field of medical wrenches, and in particular to an electric wrench for orthopedic surgery. Background Art

[0002] Orthopedic electric wrenches are mainly used in the field of spinal fixation devices used in orthopedic surgery, and are mainly used in spinal trauma, slippage, degenerative diseases, etc. Specifically, it relates to a tightening tool used to fix the spinal stabilization system. Spinal vertebral lesions are common and frequently-occurring diseases that plague people. The main method of treating this disease is surgical resection of spinal lesions and then spinal reconstruction. In this operation, it is usually necessary to use a spinal stabilization system on the spine for vertebral fixation. The spinal stabilization system is commonly known as a nail-rod system. The structure of the nail-rod system includes: pedicle screws are respectively provided at both ends of the spinal rod. The spinal electric wrench is an auxiliary tightening tool often used to fix the nail-rod system on the spine.

[0003] The existing spinal torque wrench has a relatively complex structure, mainly composed of a wrench head, an adjusting bolt, a spring, a ratchet, a pawl and other parts, and is manually operated. When tightening, the operator mainly twists the wrench manually and repeatedly, so that the pawl pushes the ratchet wheel to rotate in one direction to achieve tightening. When tightening, the operator cannot control the tightening force and speed of the traditional wrench. The operator completely relies on the tightening torque to judge whether it is tightened during the tightening process. The operation is cumbersome and it is impossible to accurately judge whether it is tightened and the timing of tightening. The tightening degree is also inconsistent, which can easily cause the nail rod system to explode due to excessive tightening force, affecting the safety of the operation, or the nail rod system is not completely tightened due to insufficient tightening force, affecting the rapid reconstruction of the spine and postoperative rehabilitation. Summary of the invention

[0004] In view of the problem that the existing technical problem of orthopedic nail rod system cannot ensure the tightening degree during the tightening process, the tightening stability is not high enough, and the safety of the operation is affected, an electric wrench for orthopedic surgery is proposed.

[0005] The purpose is to ensure the degree and stability of tightening during tightening, avoid exploding the nail rod system, and ensure the safety of tightening during surgery.

[0006] The technical solution of the present invention is an electric wrench for orthopedic surgery, comprising a handle, a tightening member arranged on one side of the handle, a mounting block arranged on the top of the handle, a fixing sleeve arranged on the top of the mounting block, and a display screen arranged on the side of one end of the handle, and also comprising a locking component arranged on the top of the fixing sleeve, and a driving component arranged at the bottom of the locking component;

[0007] The locking component is used to lock the tightening member, and the driving component is used to drive the locking component to drive the tightening member to rotate and tighten;

[0008] The locking component comprises a pressing component arranged on the top of the fixed sleeve, and a locking component arranged in an annular array inside the pressing component;

[0009] The pressing assembly includes a pressing groove opened in an annular array on the side wall of the fixed sleeve, a pressing block mounted on the fixed sleeve, and the middle part of the pressing block is slidingly connected with the pressing groove, a rotating block arranged in the middle part of the pressing block, a movable groove opened inside the rotating block, an abutment plate arranged at the bottom of the movable groove, a pressing piece arranged at the top of the abutment plate, and the top of the pressing piece is fixedly connected with one side of the movable groove, a rotating column mounted in the middle part of the abutment plate, and the pressing piece is mounted on the rotating column, a sliding hole opened at the bottom of the pressing block, and the hole wall of the sliding hole is slidingly connected with the fixed sleeve, the middle part of the rotating block is slidingly connected with the rotating column, the bottom of the rotating column is rotatably connected with the fixed sleeve, and a locking assembly is arranged inside the rotating block.

[0010] Furthermore, the side surface of the pressing block is in an arc shape, and the bottom of the rotating column is connected to the inner limit rotation of the mounting block.

[0011] Furthermore, the locking assembly includes a rotating groove opened in the rotating block, and one side of the rotating groove passes through the side wall of the rotating column, a toggle rod arranged in one side of the rotating groove, a fixed rod arranged on the other side of the rotating groove and located on the rotating column, a locking block arranged on the fixed rod, a rotating bar arranged on the side of the locking block away from the fixed rod, and the middle part of the rotating bar is slidably connected to the toggle rod, and a locking groove in an annular array is opened on the bottom side wall of the tightening member and matches one side of the locking block, and one side of the locking block is clamped with the locking groove.

[0012] Furthermore, one side of the locking block is an arc surface, and the projection of the arc surface on one side of the rotating groove is cocentric with the fixing rod.

[0013] Furthermore, a contact surface is provided at the bottom of the locking block, and the bottom of the locking groove contacts the contact surface.

[0014] Furthermore, the driving component includes a fixed plate arranged in the middle of the rotating column, a driving plate arranged at the bottom of the fixed plate, a driving column arranged in the middle of the driving plate, an extrusion piece sleeved on the driving column, a limiting plate arranged at the bottom of the extrusion piece, and the middle part of the limiting plate is fixedly connected to the driving column, and a driving motor is arranged at the bottom of the driving column, and the driving motor is arranged inside the handle, and the middle part of the fixed plate is rotatably connected to the driving column.

[0015] Furthermore, a moving groove is formed in a circular array on the side wall of the driving column, and a moving block is arranged in the moving groove, and one side of the moving block is fixedly connected to the driving plate.

[0016] Furthermore, the top annular array of the driving plate is provided with driving grooves, and the bottom of the fixed plate is provided with embedded blocks matching the driving grooves in a corresponding annular array, and the driving grooves are triangular in shape.

[0017] Furthermore, the groove surface of the driving groove is provided with a linear array of snap-in grooves, the inclined surface of the embedded block is provided with snap-in blocks matching the snap-in grooves in a linear array, and the snap-in blocks are snap-fitted with the snap-in grooves, and the bottom of the embedded block is horizontal.

[0018] Furthermore, the bottom of the clamping groove is horizontal, and the angle formed by the side and the bottom is an acute angle.

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

[0020] 1. The locking components and driving components are provided to improve the tightening degree. When fully tightened, the driving plate slides directly against the fixing plate to avoid the nail rod system from bursting. The tightening degree of the nail rod system is greatly improved while ensuring safety, thereby reducing the operator's labor intensity.

[0021] 2. The arc shape of the side of the pressing block is convenient for pressing during operation. The bottom of the rotating column is connected to the mounting block for limited rotation, and the cross-section of one side of the bottom of the rotating column is L-shaped, so that the rotating column can rotate in the mounting block when it is driven to rotate, thereby improving the stability of the rotating column during rotation.

[0022] 3. When the driving plate is squeezed by the extrusion piece, through the set driving groove and the matching embedded block, when the driving motor drives the driving column to rotate clockwise, the driving plate can synchronously drive the fixed plate to rotate clockwise. The setting of the triangular driving groove enables the embedded block to slide out along the inclined surface of the driving groove when the tightening piece is tightened, that is, it no longer synchronously drives the fixed plate to rotate, thereby improving the safety during tightening and reducing surgical risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the electric wrench of the present invention;

[0024] Figure 2 It is a partial cross-sectional structural schematic diagram of the electric wrench of the present invention;

[0025] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 4 It is a schematic diagram of the overall structure of the pressing assembly of the present invention;

[0027] Figure 5 It is a schematic diagram of the overall structure of the locking assembly of the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the locking block of the present invention;

[0029] Figure 7 It is a three-dimensional structural schematic diagram of the driving component of the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing plate of the present invention;

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the driving plate of the present invention;

[0032] Fig.10 It is a schematic diagram of the overall structure of the present invention in which the driving plate and the fixing plate are close to each other;

[0033] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged structure at point B in the middle.

[0034] In the figure:

[0035] 1. Handle; 11. Tightening piece; 12. Mounting block; 13. Fixed sleeve; 14. Display screen; 2. Pressing assembly; 21. Pressing groove; 22. Pressing block; 23. Rotating block; 24. Movable groove; 25. Abutment plate; 26. Pressing piece; 27. Rotating column; 28. Sliding hole; 3. Locking assembly; 31. Rotating groove; 32. Toggle rod; 33. Fixed rod; 34. Locking block; 35. Rotating bar; 36. Locking groove; 37. Abutment surface; 4. Driving component; 41. Fixed plate; 42. Driving plate; 43. Driving column; 44. Extrusion piece; 45. Limiting plate; 46. Driving motor; 47. Moving groove; 48. Moving block; 49. Driving groove; 50. Embedded block; 51. Snap-in groove; 52. Snap-in block. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] Example 1, reference Figure 1-Figure 7, which is the first embodiment of the present invention, provides an electric wrench for orthopedic surgery, including a handle 1, a tightening piece 11 installed on one side of the handle 1, a mounting block 12 installed on the top of the handle 1, a fixed sleeve 13 fixedly connected to the top of the mounting block 12, and a display screen 14 installed on the side of one end of the handle 1, and also includes a locking component installed on the top of the fixed sleeve 13, and a driving component 4 installed at the bottom of the locking component; the locking component is used to lock the tightening piece 11, and the driving component 4 is used to drive the locking component to drive the tightening piece 11 to rotate and tighten; the locking component includes a pressing component 2 installed on the top of the fixed sleeve 13, and a locking component 3 installed in an annular array inside the pressing component 2; the pressing component 2 includes a pressing groove 21 arranged in an annular array on the side wall of the fixed sleeve 13, and the sleeve A pressing block 22 is arranged on the fixed sleeve 13, and the middle part of the pressing block 22 is limitedly slidably connected to the pressing groove 21, a rotating block 23 rotatably connected to the middle part of the pressing block 22, a movable groove 24 is opened inside the rotating block 23, an abutting plate 25 abuts against the bottom of the movable groove 24, a pressing piece 26 is fixedly connected to the top of the abutting plate 25, and the top of the pressing piece 26 is fixedly connected to one side of the movable groove 24, a rotating column 27 is sleeved on the middle part of the abutting plate 25, and the pressing piece 26 is sleeved on the rotating column 27, a sliding hole 28 is opened at the bottom of the pressing block 22, and the hole wall of the sliding hole 28 is slidably connected to the fixed sleeve 13, the middle part of the rotating block 23 is slidably connected to the rotating column 27, the bottom of the rotating column 27 is rotatably connected to the fixed sleeve 13, and the locking assembly 3 is installed inside the rotating block 23.

[0038] Specifically, when using the electric wrench for tightening, first press the pressing block 22 with your hand, the pressing block 22 moves vertically downward along the pressing groove 21, and simultaneously drives the rotating block 23 to move downward along the column wall of the rotating column 27, the rotating block 23 moves downward to compress the pressing piece 26, because the bottom of the pressing piece 26 is abutted by the abutment plate 25, so that the pressing piece 26 is compressed, the pressing piece 26 can be a spring; in the process of the pressing block driving the rotating block 23 to move downward synchronously, the rotating block 23 drives the locking assembly 3 to rotate, so that it shrinks into the rotating block 23, and then the corresponding tightening piece 11 is inserted into the rotating column 27, by holding the handle 1, one end of the tightening piece 11 is aligned with the part to be tightened, and the driving component 4 is started to achieve the tightening effect. The force and speed of the wrench can be controlled by a control system embedded in the handle 1, and the data (torque, rotation speed) displayed on the display screen 14 can make the operator understand the force and speed to be used, and through the provided driving component 4, when it is tightened or the torque is too large, the internal self-stop device can avoid the cone from bursting.

[0039] Reference Figure 1-Figure 4 The side surface of the pressing block 22 is arc-shaped, and the bottom of the rotating column 27 is connected to the inner limit rotation of the mounting block 12.

[0040] Specifically, the arc shape of the side of the pressing block 22 is convenient for pressing during operation, the bottom of the rotating column 27 is connected to the mounting block 12 for limited rotation, and the cross-section of one side of the bottom of the rotating column 27 is L-shaped, so that the rotating column 27 can rotate inside the mounting block 12 when being driven to rotate, thereby improving the stability of the rotating column 27 during rotation.

[0041] Reference Figure 1-Figure 5 The locking assembly 3 includes a rotating groove 31 opened inside the rotating block 23, and one side of the rotating groove 31 passes through the side wall of the rotating column 27, a toggle rod 32 fixedly connected to one side of the rotating groove 31, a fixed rod 33 fixedly connected to the other side of the rotating groove 31 and located on the rotating column 27, a locking block 34 rotatably connected to the fixed rod 33, a rotating bar 35 fixedly connected to the side of the locking block 34 away from the fixed rod 33, and the middle part of the rotating bar 35 is slidably connected to the toggle rod 32, and a locking groove 36 is annularly arranged on the bottom side wall of the tightening member 11 and matches one side of the locking block 34, and one side of the locking block 34 is engaged with the locking groove 36.

[0042] When the locking cam 35 is in the locked state, the locking cam 35 is locked and the locking cam 36 is locked.

[0043] Reference Figure 1-Figure 6 One side of the locking block 34 is an arc surface, and the projection of the arc surface on one side of the rotating groove 31 is cocentric with the fixing rod 33 .

[0044] Specifically, the projection of the arc surface on one side of the rotation groove 31 is cocentric with the fixing rod 33 , so that the locking block 34 can freely rotate in and out of the locking groove 36 , which is convenient for locking the tightening member 11 .

[0045] Reference Figure 6 The bottom of the locking block 34 is provided with an abutting surface 37 , and the bottom of the locking groove 36 abuts against the abutting surface 37 .

[0046] Specifically, the abutment surface 37 is arranged so that when the tightening piece 11 is locked, the abutment surface 37 can abut and lock the locking groove 36, thereby firmly locking the tightening piece 11 in the rotating column 27. When the locking block 34 is driven to rotate until the abutment surface 37 is in a vertical state, the tightening piece 11 can be inserted and removed.

[0047] Example 2, reference Figure 1-Figure 9 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the driving component 4 includes a fixed plate 41 fixedly connected to the middle part of the rotating column 27, a driving plate 42 abutting the bottom of the fixed plate 41, a driving column 43 slidably connected to the middle part of the driving plate 42, an extrusion member 44 sleeved on the driving column 43, a limiting plate 45 fixedly connected to the bottom of the extrusion member 44, and the middle part of the limiting plate 45 is fixedly connected to the driving column 43, and a driving motor 46 fixedly connected to the bottom of the driving column 43, and the driving motor 46 is installed inside the handle 1, and the middle part of the fixed plate 41 is rotatably connected to the driving column 43.

[0048] Specifically, when the driving component 4 is working, the driving motor 46 rotates to drive the driving column 43 to rotate, and the driving column 43 synchronously drives the driving plate 42 to rotate. The driving plate 42 is pressed against the fixed plate 41 under the extrusion action of the extrusion member 44, so that the fixed plate 41 is driven to rotate synchronously, and the rotation of the fixed plate 41 drives the rotating column 27 to rotate synchronously. The rotating column 27 synchronously drives the rotating block 23 and the tightening member 11 to rotate together under the clamping and limiting action of the locking assembly 3, thereby achieving the rotation and tightening effect of the tightening member 11. The extrusion piece 44 can be a spring, and the elastic coefficient of the extrusion piece 44 is relatively large, that is, when the tightening state begins, the elastic coefficient of the extrusion piece 44 is relatively large, that is, its elastic force is sufficient to make the driving plate 42 press against the fixing plate 41, thereby driving the fixing plate 41 and the rotating column 27 to rotate together. When the tightening process of the tightening piece 11, the resistance gradually increases, relative movement will occur between the driving plate 42 and the fixing plate 41; when the extrusion force provided by the extrusion piece 44 is not enough to make the driving plate 42 synchronously drive the fixing plate 41 during the rotation process, the driving plate 42 is squeezed downward by the fixing plate 41 to compress the extrusion piece 44, so that the extrusion piece 44 is continuously compressed and reset, which can prevent the spinal nail rod system from being blown up and enhance the safety of the tightening piece 11 during auxiliary tightening.

[0049] Reference Figure 7 A moving groove 47 is formed in an annular array on the side wall of the driving column 43 , and a moving block 48 is slidably connected in the moving groove 47 , and one side of the moving block 48 is fixedly connected to the driving plate 42 .

[0050] Specifically, the arrangement of the moving groove 47 and the moving block 48 enables the driving column 43 to drive the driving plate 42 to rotate when it rotates. When the driving plate 42 is pressed downward, the moving block 48 at the bottom of the driving plate 42 can move downward along the moving groove 47 and compress the extrusion piece 44.

[0051] Reference Figure 7-Figure 11 The top annular array of the driving plate 42 is provided with driving grooves 49, and the bottom corresponding to the annular array of the fixed plate 41 is fixedly connected with an embedded block 50 matching the driving grooves 49, and the driving grooves 49 are triangular in shape.

[0052] Specifically, when the driving plate 42 is squeezed by the extrusion piece 44, through the set driving groove 49 and the matching embedded block 50, the driving plate 42 can synchronously drive the fixing plate 41 to rotate clockwise when the driving motor 46 drives the driving column 43 to rotate clockwise. The setting of the triangular driving groove 49 enables the embedded block 50 to slide out along the inclined surface of the driving groove 49 when the tightening piece 11 is tightened, that is, it no longer synchronously drives the fixing plate 41 to rotate, thereby improving the safety during tightening and reducing the surgical risks.

[0053] Reference Figure 8-Figure 11 The groove surface of the driving groove 49 is provided with a linear array of snap-in grooves 51, and the inclined surface of the embedded block 50 is provided with a linear array of snap-in blocks 52 matching the snap-in grooves 51, and the snap-in blocks 52 are snap-fitted with the snap-in grooves 51, and the bottom of the embedded block 50 is horizontal.

[0054] Specifically, when the driving plate 42 rotates, the provided clamping groove 51 can push the clamping block 52, thereby improving the stability of the driving plate 42 driving the fixed plate 41 to rotate synchronously.

[0055] Reference Fig.11 The bottom of the engaging groove 51 is horizontal, and the angle formed between its side and its bottom is acute.

[0056] Specifically, when the fixed plate 41 no longer rotates with the driving plate 42, due to the shape of the clamping groove 51, the clamping block 52 can still slide out from one side of the clamping groove 51, which not only improves the stability of the synchronous rotation of the fixed plate 41, but also does not affect the driving plate 42 from disengaging and driving the fixed plate 41 to rotate. And when the driving plate 42 drives the fixed plate 41 to rotate, when tightening begins, since the resistance of the tightening member 11 is small, the extrusion member 44 can press the driving plate 42 tightly, so that the driving plate 42 can completely fit the fixed plate 41, that is, the fixed plate 41 is driven to tighten the tightening member 11 synchronously and at the same speed; when the nail rod system is completely tightened, the fixed plate 41 is no longer driven by the driving plate 42 to rotate synchronously. At this time, the driving plate 42 will be continuously squeezed and separated from the fixed plate 41 under the action of the extrusion member 44; in between, that is, when the nail rod system is about to be tightened, due to the resistance of the tightening member 11, the extrusion member 44 can press the driving plate 42 tightly, so that the driving plate 42 can completely fit the fixed plate 41, that is, drive the fixed plate 41 to tighten the tightening member 11 synchronously and at the same speed; when the nail rod system is completely tightened, the fixed plate 41 is no longer driven by the driving plate 42 to rotate synchronously, and the driving plate 42 will be continuously squeezed and separated from the fixed plate 41 under the action of the extrusion member 44; in between, that is, when the nail rod system is about to be tightened, due to the resistance of the tightening member 11, the The force is large, so that the driving plate 42 will slide relative to the fixed plate 41, that is, the fixed plate 41 does not rotate synchronously with the driving plate 42. When the fixed plate 41 rotates at a low speed, its torque will increase, so that the driving plate 42 further drives the tightening member 11 to tighten the nail rod system, which has the effect of reducing the rotation speed of the fixed plate 41. In the process of continuous separation and overlap, it is continuously tightened to improve the tightening degree. When it is fully tightened, the driving plate 42 directly slides with the fixed plate 41 to avoid blowing up the nail rod system, and greatly improves the tightening degree of the nail rod system while ensuring safety. The rest of the structure is the same as that of Example 1.

[0057] The working principle of the present invention is as follows: when tightening, the pressing block 22 is pressed down, so that the pressing block 22 drives the rotating block 23 to squeeze the pressing member 26, and the toggle rod 32 drives the rotating bar 35 and the locking block 34 to rotate and contract, and then the tightening member 11 is placed in the rotating column 27, and then the pressing block 22 is released, so that the pressing block 22 drives the rotating block 23 to move upward under the resetting action of the pressing member 26, so that the rotating bar 35 drives the locking block 34 to reset and rotate, and is clamped into the locking groove 36, so as to achieve rapid clamping of the tightening member 11, and start the driving motor 46, so that the rotating column 27 drives the driving plate 42 to rotate, and the driving plate 42 synchronously drives the fixed plate 41 to rotate under the action of the extruding member 44, and the fixed plate 41 drives the rotating column 27 to rotate synchronously, so that the rotating block 23 synchronously drives the tightening member 11 to rotate, so as to achieve the tightening effect.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An electric wrench for orthopedic surgery, comprising a handle (1), a tightening member (11) arranged on one side of the handle (1), a mounting block (12) arranged on the top of the handle (1), a fixing sleeve (13) arranged on the top of the mounting block (12), and a display screen (14) arranged on the side of one end of the handle (1), characterized in that: It also includes a locking component arranged at the top of the fixed sleeve (13), and a driving component (4) arranged at the bottom of the locking component; The locking component is used to lock the tightening member (11), and the driving component (4) is used to drive the locking component to drive the tightening member (11) to rotate and tighten; The locking component comprises a pressing component (2) arranged on the top of the fixed sleeve (13), and locking components (3) arranged in an annular array inside the pressing component (2); The pressing assembly (2) comprises a pressing groove (21) formed in an annular array on the side wall of a fixed sleeve (13), a pressing block (22) sleeved on the fixed sleeve (13), wherein the middle portion of the pressing block (22) is limitedly slidably connected to the pressing groove (21), a rotating block (23) disposed in the middle portion of the pressing block (22), a movable groove (24) formed inside the rotating block (23), an abutment plate (25) disposed at the bottom of the movable groove (24), a pressing piece (26) disposed at the top of the abutment plate (25), and the pressing piece (26) ) is fixedly connected to one side of the movable groove (24), a rotating column (27) is sleeved on the middle part of the abutting plate (25), and the pressing member (26) is sleeved on the rotating column (27), and a sliding hole (28) is opened at the bottom of the pressing block (22), and the hole wall of the sliding hole (28) is slidably connected to the fixed sleeve (13), the middle part of the rotating block (23) is slidably connected to the rotating column (27), the bottom of the rotating column (27) is rotatably connected to the fixed sleeve (13), and the locking component (3) is arranged inside the rotating block (23); The locking assembly (3) comprises a rotation groove (31) formed inside the rotation block (23), one side of the rotation groove (31) passing through the side wall of the rotation column (27), a toggle rod (32) arranged inside one side of the rotation groove (31), a fixed rod (33) formed on the other side of the rotation groove (31) and located on the rotation column (27), a locking block (34) formed on the fixed rod (33), a rotation bar (35) formed on the side of the locking block (34) away from the fixed rod (33), the middle portion of the rotation bar (35) being slidably connected to the toggle rod (32), and a locking groove (36) formed in an annular array and formed on the bottom side wall of the tightening member (11) and matching one side of the locking block (34), one side of the locking block (34) being snap-fitted to the locking groove (36); The driving component (4) comprises a fixing plate (41) arranged at the middle of the rotating column (27), a driving plate (42) arranged at the bottom of the fixing plate (41), a driving column (43) arranged at the middle of the driving plate (42), an extrusion member (44) sleeved on the driving column (43), a limiting plate (45) arranged at the bottom of the extrusion member (44), wherein the middle of the limiting plate (45) is fixedly connected to the driving column (43), and a driving motor (46) is arranged at the bottom of the driving column (43), wherein the driving motor (46) is arranged inside the handle (1), and the middle of the fixing plate (41) is rotatably connected to the driving column (43); When the driving component (4) is working, the driving motor (46) rotates to drive the driving column (43) and the driving plate (42) to rotate. The driving plate (42) is pressed against the fixed plate (41) by the extrusion of the extrusion member (44), so that the fixed plate (41) is driven to rotate synchronously. The rotation of the fixed plate (41) drives the rotating column (27) to rotate synchronously. The rotating column (27) drives the rotating block (23) and the tightening member (11) to rotate together synchronously under the clamping and limiting action of the locking assembly (3), thereby realizing the rotation and tightening action of the tightening member (11).

2. The electric wrench for orthopedic surgery according to claim 1, characterized in that: The side surface of the pressing block (22) is in an arc shape, and the bottom of the rotating column (27) is connected to the inner limit rotation of the mounting block (12).

3. The electric wrench for orthopedic surgery according to claim 2, characterized in that: One side of the locking block (34) is an arc surface, and the projection of the arc surface on one side of the rotating groove (31) is cocentric with the fixing rod (33).

4. The electric wrench for orthopedic surgery according to claim 3, characterized in that: The bottom of the locking block (34) is provided with an abutment surface (37), and the bottom of the locking groove (36) abuts against the abutment surface (37).

5. The electric wrench for orthopedic surgery according to claim 1, characterized in that: The side wall of the driving column (43) is provided with a moving groove (47) in an annular array, and a moving block (48) is arranged in the moving groove (47), and one side of the moving block (48) is fixedly connected to the driving plate (42).

6. The electric wrench for orthopedic surgery according to claim 1, characterized in that: The top annular array of the driving plate (42) is provided with driving grooves (49), and the bottom of the fixed plate (41) is provided with embedded blocks (50) matching the driving grooves (49) in a corresponding annular array, and the driving grooves (49) are triangular in shape.

7. The electric wrench for orthopedic surgery according to claim 6, characterized in that: The groove surface of the driving groove (49) is provided with snap-fit ​​grooves (51) in a linear array, and the inclined surface of the embedding block (50) is provided with snap-fit ​​blocks (52) matching the snap-fit ​​grooves (51) in a linear array, and the snap-fit ​​blocks (52) are snap-fitted with the snap-fit ​​grooves (51), and the bottom of the embedding block (50) is horizontal.

8. The electric wrench for orthopedic surgery according to claim 7, characterized in that: The bottom of the clamping groove (51) is horizontal, and the angle formed between its side and its bottom is an acute angle.

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