Positioning type drilling device

Abstract

The invention provides a positioning type drilling device. The positioning type drilling device comprises a base, a knee bending mechanism, a positioning mechanism and a drilling mechanism. The legs of a patient are placed on the two supporting plates, the supporting rollers abut against the concave positions below the knees, then the lifting assemblies are adjusted to drive the supporting rollers to ascend and descend, the knees can be driven to ascend and descend through ascending and descending of the supporting rollers, the two supporting plates are folded or unfolded to rotate, and therefore the bending angle of the knees of the patient can be adjusted conveniently according to operation requirements; after the knee bending angle is adjusted properly, an arc-shaped guide frame drives a drilling machine to rotate by adjusting a rotating assembly and drives the drilling machine to move in the arc direction of the arc-shaped guide frame by adjusting a moving assembly, so that the drilling machine can move around the knee of the patient in a hemispherical track to adjust the drilling angle of the drilling machine, and the adjusting range of the drilling angle of the drilling machine is enlarged; and after the drilling angle of the drilling machine is adjusted, the driving feeding assembly drives the drilling machine to move so that drilling operation can be conducted, and the drilling machine is driven to drill conveniently and stably.

Description

Technical Field

[0001] The invention relates to the technical field of orthopedic drilling, and in particular to a positioning drill. Background Art

[0002] Arthroscopic cleaning and drilling decompression is a common treatment for diseases such as knee osteoarthritis. Usually, during surgery, the inside of the knee joint is observed and operated through an arthroscopy under appropriate anesthesia and body position, including cleaning loose bodies and synovium in the joint cavity, and drilling decompression to relieve pressure and improve blood circulation. During this process, the knee may need to be bent to a certain angle to allow the doctor to better perform the operation.

[0003] In the prior art, most of the drilling devices for drilling and decompressing the knee joint have simple structures, which are not convenient for adjusting the bending angle of the patient's knee according to the surgical requirements, and most of the drilling machines can only adjust the angle in a single direction, which reduces the practicality of the device. Therefore, in order to solve the above technical problems, a positioning drill is proposed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention proposes a positioning drill, which is convenient for adjusting the bending angle of the patient's knee according to surgical requirements, and can make the drill move in a hemispherical trajectory around the patient's knee to adjust the drilling angle of the drill, thereby increasing the adjustment range of the drilling angle of the drill and improving the practicability of the device.

[0005] A positioning drilling tool, comprising:

[0006] A base, with a support column at the top, and a mounting plate at the top of the support column;

[0007] The kneeling mechanism comprises a support roller, a support plate, a connecting seat and a lifting assembly, wherein the connecting seats capable of sliding along the length direction of the mounting plate are arranged at both ends of the mounting plate, the supporting plates are hingedly connected to the two sets of connecting seats, and the opposite ends of the two sets of supporting plates are hingedly connected to the supporting roller, and the lifting assembly connects the mounting plate and the supporting roller and is used to drive the supporting roller to rise and fall in the vertical direction;

[0008] A positioning mechanism, comprising an arc-shaped guide frame, a rotating assembly and a moving assembly, wherein the arc-shaped guide frame is connected to the support column through the rotating assembly so that the arc-shaped guide frame can rotate around the knee flexion mechanism, and the moving assembly is arranged on the arc-shaped guide frame and can move along the arc direction thereof; and

[0009] The drilling mechanism comprises a drilling machine and a feeding assembly. The drilling machine is arranged on the moving assembly through the feeding assembly. The feeding assembly can be adjusted to drive the drilling machine to slide radially along the arc-shaped guide frame.

[0010] The beneficial effects of the above-mentioned positioning drill are:

[0011] The patient's legs are placed on two sets of support plates and the support rollers are pressed against the concave part below the knees. The support rollers are then driven to rise and fall by adjusting the lifting assembly. The lifting of the support rollers can drive the knees to rise and fall, and the two sets of support plates are closed or opened and rotated, so as to facilitate the adjustment of the bending angle of the patient's knee according to the surgical needs. When the knee bending angle is adjusted appropriately, the drill rig can be moved in a hemispherical trajectory around the patient's knee by adjusting the rotating assembly to make the arc-shaped guide frame drive the drill rig to rotate and adjusting the moving assembly to drive the drill rig to move along the arc direction of the arc-shaped guide frame to adjust the drilling angle of the drill rig, thereby increasing the adjustment range of the drilling angle of the drill rig and improving the practicability of the device. When the drilling angle of the drill rig is adjusted, the feed assembly is driven to drive the drill rig to move to perform the drilling operation, and driving the drill rig to drill is convenient and stable.

[0012] In one embodiment, multiple groups of limit rods are provided at the opposite ends of the two groups of connection seats, and multiple groups of limit holes are provided at both ends of the mounting plate, and the multiple groups of limit rods can be slidably penetrated in the multiple groups of limit holes along the length direction of the mounting plate. When the support rollers are lifted and driven to close or open the two groups of support plates, the two groups of support plates drive the two groups of connection seats to move relatively closer or farther, thereby avoiding interference between the two groups of connection seats and the patient's legs placed on the support plates when adjusting the degree of knee bending of the patient, and ensuring that the two groups of support plates can stably support the patient's legs.

[0013] In one embodiment, the lifting assembly includes a threaded sleeve and a first screw rod; a telescopic hole is provided at the top of the mounting plate, the first screw rod can be slidably inserted into the telescopic hole in a vertical direction, and the top end is connected to the support roller, the threaded sleeve is rotatably arranged on the mounting plate, and is threadedly connected to the first screw rod. By rotating the threaded sleeve and cooperating with the first screw rod thread, the first screw rod can be driven to move upward to raise the support roller, and by rotating the threaded sleeve and cooperating with the first screw rod thread in the opposite direction, the first screw rod can be driven to move downward to lower the support roller, and stopping the rotation of the threaded sleeve can form a self-locking with the first screw rod, thereby fixing the support roller, and driving the support roller to rise and fall and fix it is convenient and labor-saving.

[0014] In one embodiment, the rotating assembly includes a connecting plate, a first motor and a bevel gear; one end of the connecting plate is sleeved on the support column, and the other end is connected to the arc-shaped guide frame. The first motor is arranged on the connecting plate, and the bevel gear is coaxially arranged on the output shaft of the first motor and the support column, and the two sets of bevel gears are meshed. By starting the first motor to drive the bevel gear on the output shaft to rotate, the bevel gear rotates and meshes with another set of bevel gears to drive the connecting plate to rotate, and the connecting plate rotates to drive the arc-shaped guide frame to rotate, and driving the arc-shaped guide frame to drive the drilling rig to rotate is convenient.

[0015] In one embodiment, the moving assembly includes a mounting seat, a worm, a worm gear ring, and a second motor; the mounting seat can be slidably arranged on the arc guide frame along the arc direction of the arc guide frame, the worm can be rotatably arranged on the mounting seat, the worm gear ring is coaxially arranged on the peripheral side of the arc guide frame, the worm is meshed with the worm gear ring, the second motor is arranged on the mounting seat, and the output end is coaxially connected with the worm. By starting the second motor to drive the worm to rotate, the worm rotates and meshes with the worm gear ring, the worm can drive the mounting seat to move along the arc direction of the arc guide frame, so that the mounting seat drives the drilling rig to move along the arc direction of the arc guide frame, and stopping the second motor to stop the worm from rotating, the worm stops rotating and meshes with the worm gear ring to form a self-locking, so that the mounting seat can be fixed, thereby fixing the drilling rig, and driving the drilling rig to move along the arc direction of the arc guide frame and fixing it is convenient.

[0016] In one embodiment, the feed assembly includes a second screw, a mounting frame and a third motor; the mounting frame can be radially slidably arranged on the mounting seat along the arc-shaped guide frame, the drilling rig is fixed to the mounting frame by bolts, the second screw is radially arranged along the arc-shaped guide frame, and is rotatably arranged on the mounting frame and threadedly connected to the mounting seat, the third motor is arranged on the mounting frame, and the output end is coaxially connected to the second screw. By starting the third motor to drive the second screw to rotate, the second screw rotates and cooperates with the mounting seat thread to drive the mounting frame to drive the drilling rig to move radially along the arc-shaped guide frame, and driving the drilling rig to move for drilling operation is convenient and stable.

[0017] In one embodiment, the knee flexion mechanism further includes a clamping assembly; the clamping assembly is provided on both sets of support plates, and the two sets of clamping assemblies are used to fix the patient's legs on the two sets of support plates. By providing the clamping assembly to fix the patient's legs on the two sets of support plates, the bending angle of the patient's knee can be fixed, and the patient's legs can be prevented from slipping off the two sets of support plates or from relative movement during the operation, thereby further improving the stability of the drilling operation.

[0018] In one embodiment, the clamping assembly includes a mounting block, an arc-shaped clamping plate and a driving member; the mounting block is disposed on the support plate, and the two groups of arc-shaped clamping plates can be slidably disposed on the mounting block along the width direction of the support plate, and the driving member is rotatably disposed on the mounting block and connected to the two groups of arc-shaped clamping plates, and rotating the driving member can drive the two groups of arc-shaped clamping plates to move relatively closer or farther away. The patient's leg can be clamped by placing the patient's leg between the two groups of arc-shaped clamping plates, and then the two groups of arc-shaped clamping plates can be driven to move relatively closer by rotating the driving member, and the clamping of the patient's leg can be canceled by rotating the driving member to drive the two groups of arc-shaped clamping plates to move relatively farther away, and it is convenient to fix or cancel the fixation of the patient's leg.

[0019] In one embodiment, the driving member includes a bidirectional screw; two sets of guide grooves are relatively opened at the top of the mounting block, and two sets of guide blocks are relatively set at the bottom of the two sets of arc-shaped clamping plates. The two sets of guide blocks can be slidably set in the two sets of guide grooves along the width direction of the support plate, and the bidirectional screw can be rotatably set in one set of guide grooves, and the two ends are respectively connected with the two sets of guide blocks in the same guide groove. The stability of the arc-shaped clamping plate when sliding can be improved by setting the guide groove and the guide block, and the two sets of guide blocks can be driven to move relatively close to each other by rotating the bidirectional screw and the two sets of guide block threads, and the two sets of guide blocks can be driven to move relatively far away from each other by rotating the bidirectional screw in the opposite direction, and the two sets of arc-shaped clamping plates can be fixed by stopping the rotation of the bidirectional screw and the two sets of guide block threads to form a self-locking, and the two sets of arc-shaped clamping plates can be driven to move relatively close to or far away from each other, so as to facilitate clamping and fixing according to the size of the patient's leg.

[0020] In one embodiment, the mounting block is provided with a through slot, and the slot is sleeved on the support plate so that the mounting block can move along the length direction of the support plate, and a fixing knob is threadedly connected to the mounting block, and rotating the fixing knob can make one end of the fixing knob abut against the support plate. The fixing knob is separated from the support plate by rotating the fixing knob, and the mounting block can be moved along the length direction of the support plate at this time. The relative position of the arc clamping plate and the support plate can be adjusted by moving the mounting block, so that the position of clamping the patient's leg can be adjusted according to needs, which is convenient for different patients to use, and further improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a positioning drill provided by an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A front view of a positioning drill shown;

[0024] Figure 3 for Figure 1 An exploded view of a knee flexion mechanism in a positioning drill is shown;

[0025] Figure 4 for Figure 1 An exploded view of a rotating assembly in a positioning drill is shown;

[0026] Figure 5 for Figure 1 An exploded view of a moving assembly in a positioning drill is shown;

[0027] Figure 6 for Figure 1 An exploded view of a drilling mechanism in a positioning drilling device is shown;

[0028] Figure 7 for Figure 1 An exploded view of a clamping assembly in a positioning drill is shown.

[0029] Reference numerals:

[0030] 10. base; 101. support column; 102. mounting plate; 1021. limit hole; 1022. telescopic hole; 103. first angle slot;

[0031] 20, support roller; 201, support plate; 202, connecting seat; 2021, limit rod; 203, threaded sleeve; 204, first screw; 205, mounting block; 2051, guide groove; 2052, through groove; 206, arc clamping plate; 2061, guide block; 207, bidirectional screw; 208, fixing knob; 209, open sponge sleeve;

[0032] 30, arc guide frame; 301, connecting plate; 3011, first angle mark; 302, first motor; 303, bevel gear; 304, mounting seat; 3041, guide arc block; 3042, second angle mark; 3043, limit groove; 3044, size mark; 305, worm; 306, worm wheel ring; 307, second motor; 308, mounting groove; 3081, guide arc groove; 3082, second angle groove;

[0033] 40. Drilling machine; 401. Second screw rod; 402. Mounting frame; 4021. Mounting ring; 4022. Size slot; 403. Third motor. DETAILED DESCRIPTION

[0034] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0035] See also Figures 1 to 3 In one embodiment, a positioning drill includes a base 10, a knee flexion mechanism, a positioning mechanism and a drilling mechanism.

[0036] The base 10 is provided with a support column 101 at the top, and a mounting plate 102 is provided at the top of the support column 101. The kneeling mechanism includes a support roller 20, a support plate 201, a connecting seat 202 and a lifting assembly. Both ends of the mounting plate 102 are provided with connecting seats 202 that can slide along the length direction thereof, and the two sets of connecting seats 202 are hinged with support plates 201. The opposite ends of the two sets of support plates 201 are hinged with the support roller 20. The lifting assembly connects the mounting plate 102 and the support roller 20, and is used to drive the support roller 20 to rise and fall in the vertical direction.

[0037] Specifically, the lifting assembly includes a threaded sleeve 203 and a first screw rod 204; a telescopic hole 1022 is opened at the top of the mounting plate 102, and the first screw rod 204 can be slidably inserted into the telescopic hole 1022 along the vertical direction, and the top end is connected to the support roller 20, and the threaded sleeve 203 is rotatably set on the mounting plate 102 and is threadedly connected to the first screw rod 204.

[0038] In the above embodiment, the patient's legs are placed on the two groups of support plates 201, and the support roller 20 is pressed against the concave part below the knee. Then, the threaded sleeve 203 is rotated to engage with the first screw rod 204 to drive the first screw rod 204 to move upward and drive the support roller 20 to rise. The support roller 20 rises and presses the patient's knee to rise. At the same time, the rise of the support roller 20 drives the two groups of support plates 201 to close and rotate. The closing and rotation of the two groups of support plates 201 can make the patient's calf and thigh close and rotate, thereby increasing the patient's knee bending angle. Conversely, the threaded sleeve 203 is rotated in the opposite direction to engage with the first screw rod 204 to drive the first screw rod 204 to move downward and drive the support roller 20 to descend. The descending of the support roller 20 makes the patient's knee descend. At the same time, the descending of the support roller 20 drives the two groups of support plates 201 to open and rotate. The opening and rotation of the two groups of support plates 201 can make the patient's calf and thigh open and rotate, thereby reducing the patient's knee bending angle. When the patient's knee bending angle is adjusted to a suitable angle, the threaded sleeve 203 is stopped to be fixed, so as to adjust the patient's knee bending angle according to surgical requirements.

[0039] Specifically in the above embodiment, an open sponge cover 209 is provided on the support roller 20. The open sponge cover 209 can improve the comfort of the support roller 20 in supporting the patient's knee.

[0040] See also Figure 2 and Figure 3 In one embodiment, multiple sets of limiting rods 2021 are provided at the opposite ends of the two sets of connecting seats 202, and multiple sets of limiting holes 1021 are opened at both ends of the mounting plate 102. The multiple sets of limiting rods 2021 can be slid along the length direction of the mounting plate 102 and penetrate into the multiple sets of limiting holes 1021.

[0041] In the above embodiment, when the support roller 20 is lifted and lowered to drive the two groups of support plates 201 to close or open and rotate, the two groups of support plates 201 drive the two groups of connecting seats 202 to move relatively closer or farther away, thereby avoiding the two groups of connecting seats 202 interfering with the patient's legs placed on the support plates 201 when adjusting the degree of bending of the patient's knees, thereby ensuring that the two groups of support plates 201 can stably support the patient's legs.

[0042] See also Figure 1 , Figure 2 , Figures 4 to 6 In one embodiment, the positioning mechanism includes an arc-shaped guide frame 30, a rotating assembly and a moving assembly. The arc-shaped guide frame 30 is connected to the support column 101 through the rotating assembly so that the arc-shaped guide frame 30 can rotate around the flexion mechanism. The moving assembly is arranged on the arc-shaped guide frame 30 and can move along the arc. The drilling mechanism includes a drilling machine 40 and a feeding assembly. The drilling machine 40 is arranged on the moving assembly through the feeding assembly. Adjusting the feeding assembly can drive the drilling machine 40 to slide radially along the arc-shaped guide frame 30.

[0043] Specifically, the rotating assembly includes a connecting plate 301, a first motor 302 and a bevel gear 303; one end of the connecting plate 301 is sleeved on the support column 101, and the other end is connected to the arc guide frame 30, the first motor 302 is arranged on the connecting plate 301, and the bevel gear 303 is coaxially arranged on the output shaft of the first motor 302 and the support column 101, and the two sets of bevel gears 303 are meshed.

[0044] The moving assembly includes a mounting seat 304, a worm 305, a worm gear ring 306 and a second motor 307; the mounting seat 304 can be slid along the arc direction of the arc guide frame 30 and is arranged on the arc guide frame 30, the worm 305 is rotatably arranged on the mounting seat 304, the worm gear ring 306 is coaxially arranged on the peripheral side of the arc guide frame 30, the worm 305 is meshed with the worm gear ring 306, the second motor 307 is arranged on the mounting seat 304, and the output end is coaxially connected to the worm 305.

[0045] The feeding assembly includes a second screw 401, a mounting frame 402 and a third motor 403; the mounting frame 402 is radially slidable along the arc-shaped guide frame 30 and is set on the mounting seat 304, the drilling rig 40 is fixed to the mounting frame 402 by bolts, the second screw 401 is radially arranged along the arc-shaped guide frame 30, and is rotatably arranged on the mounting frame 402, and is threadedly connected to the mounting seat 304, the third motor 403 is set on the mounting frame 402, and the output end is coaxially connected to the second screw 401.

[0046] In the above embodiment, the bevel gear 303 on the output shaft is driven to rotate by starting the first motor 302, and the bevel gear 303 rotates and meshes with another set of bevel gears 303 to drive the connecting plate 301 to rotate. The connecting plate 301 rotates to drive the arc guide frame 30 to rotate. The arc guide frame 30 rotates to drive the drilling rig 40 to rotate through the mounting seat 304 and the mounting frame 402. It is convenient to drive the arc guide frame 30 to drive the drilling rig 40 to rotate. The worm 305 is driven to rotate by starting the second motor 307. The worm 305 rotates and meshes with the worm wheel ring 306, so that the worm 305 drives the mounting seat 304 to move along the arc direction of the arc guide frame 30, so that the mounting seat 304 drives the drilling rig 40 to move along the arc direction of the arc guide frame 30 through the mounting frame 402, and the second motor 307 is stopped to stop the worm 305. The drill 40 is fixed by rotating the worm 305, and the worm 305 stops rotating and meshes with the worm wheel ring 306 to form a self-locking function. The drill 40 can be fixed by driving the arc guide frame 30 to rotate the drill 40 and driving the drill 40 to move along the arc direction of the arc guide frame 30, so that the drill 40 can move in a hemispherical trajectory around the patient's knee to adjust the hole rotation angle of the drill 40, thereby increasing the adjustment range of the drilling angle of the drill 40 and improving the practicality of the device. When the drilling angle of the drill 40 is adjusted, the second screw 401 is driven to rotate by starting the third motor 403, and the second screw 401 rotates and cooperates with the mounting seat 304 thread to drive the mounting frame 402 to drive the drill 40 to move radially along the arc guide frame 30. The drill 40 moves radially along the arc guide frame 30 to perform drilling decompression operation on the knee joint, and driving the drill 40 to drill is convenient and stable.

[0047] Specifically in the above embodiment, the connecting plate 301 is provided with a first angle mark 3011, and the top of the base 10 is evenly provided with a plurality of first angle grooves 103 along the circumference of the support column 101, and the first angle mark 3011 points to the first angle groove 103. When the connecting plate 301 drives the arc guide frame 30 to rotate, the connecting plate 301 rotates so that the first angle mark 3011 points to different first angle grooves 103, so that the rotation angle of the arc guide frame 30 can be intuitively seen, thereby improving the accuracy of the arc guide frame 30 driving the drilling rig 40 to rotate.

[0048] Specifically in the above embodiment, a mounting groove 308 is provided on the arc guide frame 30, and guide arc grooves 3081 are provided on both sides of the mounting groove 308. Guide arc blocks 3041 are provided on both sides of the mounting seat 304. Two groups of guide arc blocks 3041 can be slidably arranged in the two groups of guide arc grooves 3081 along the arc of the arc guide frame 30. A second angle mark 3042 is provided on the mounting seat 304. Multiple groups of second angle grooves 3082 are evenly arranged on one side of the arc guide frame 30 along its arc direction, and the second angle mark 3042 points to the second angle groove 3082. By setting the guide arc block 3041 in cooperation with the guide arc groove 3081, the stability of the mounting seat 304 sliding along the arc guide frame 30 can be improved. When the mounting seat 304 slides along the arc guide frame 30, the mounting seat 304 slides so that the second angle mark 3042 points to a different second angle groove 3082, thereby facilitating intuitively seeing the angle of the mounting seat 304 sliding along the arc guide frame 30, thereby improving the accuracy of the mounting seat 304 driving the drilling rig 40 to slide along the arc guide frame 30.

[0049] Specifically in the above embodiment, two groups of through-limiting grooves 3043 are relatively opened on the mounting seat 304, one end of the mounting frame 402 can slide radially along the arc-shaped guide frame 30 and penetrate the two groups of limiting grooves 3043, and is provided with a mounting ring 4021, the drilling machine 40 is arranged in the mounting ring 4021 and fixed by bolts, a size mark 3044 is provided on the mounting seat 304, and a plurality of groups of size grooves 4022 are evenly opened on the mounting frame 402 along its length direction, and the size mark 3044 points to the size groove 4022. When the mounting frame 402 drives the drilling machine 40 to move for drilling operation, the movement of the mounting frame 402 can make the size mark 3044 match with different size grooves 4022, so as to facilitate intuitive observation of the drilling depth and improve the accuracy of the drilling operation.

[0050] See also Figure 1 , Figure 2 and Figure 7 In one embodiment, the knee flexion mechanism further includes a clamping assembly; both sets of support plates 201 are provided with clamping assemblies, and the two sets of clamping assemblies are used to fix the patient's legs on the two sets of support plates 201.

[0051] Specifically, the clamping assembly includes a mounting block 205, an arc-shaped clamping plate 206 and a driving member; the mounting block 205 is set on the support plate 201, and the two groups of arc-shaped clamping plates 206 can be slidably set on the mounting block 205 along the width direction of the support plate 201. The driving member is rotatably set on the mounting block 205 and is connected to the two groups of arc-shaped clamping plates 206. The rotating driving member can drive the two groups of arc-shaped clamping plates 206 to move relatively close or away.

[0052] The driving member includes a bidirectional screw 207; two groups of guide grooves 2051 are relatively opened at the top of the mounting block 205, and two groups of guide blocks 2061 are relatively set at the bottom ends of the two groups of arc-shaped clamping plates 206. The two groups of guide blocks 2061 can be slidably set in the two groups of guide grooves 2051 along the width direction of the support plate 201, and the bidirectional screw 207 can be rotatably set in one of the groups of guide grooves 2051, and the two ends are respectively threadedly connected with the two groups of guide blocks 2061 in the same guide groove 2051.

[0053] In the above embodiment, the patient's legs are placed between the two groups of arc-shaped clamping plates 206, and then the two groups of guide blocks 2061 are driven to move relatively close to each other by rotating the bidirectional screw 207 and threading the two groups of guide blocks 2061. The two groups of arc-shaped clamping plates 206 move relatively close to each other to clamp the patient's legs, thereby fixing the patient's legs on the support plate 201, preventing the patient's legs from sliding off the two groups of support plates 201 or making relative movements during the operation, and facilitating the fixing of the knee bending angle. The stability of the drilling operation is improved in one step, and the two sets of arc-shaped clamping plates 206 can be fixed by stopping the rotation of the bidirectional screw 207 and the two sets of guide blocks 2061 threads to form a self-locking function, which is convenient for clamping and fixing according to the size of the patient's legs. By rotating the bidirectional screw 207 in the opposite direction and the two sets of guide blocks 2061 threads to drive the two sets of guide blocks 2061 to drive the two sets of arc-shaped clamping plates 206 to move relatively apart. The two sets of arc-shaped clamping plates 206 move relatively apart to cancel the fixation of the patient's legs, which is convenient for fixing or canceling the fixation of the patient's legs.

[0054] See also Figure 3 and Figure 7 In one embodiment, a through slot 2052 is provided on the mounting block 205, and the through slot 2052 is sleeved on the support plate 201 so that the mounting block 205 can move along the length direction of the support plate 201. A fixing knob 208 is threadedly connected to the mounting block 205, and rotating the fixing knob 208 can make one end of the fixing knob 208 abut against the support plate 201.

[0055] In the above embodiment, the fixing knob 208 is separated from the support plate 201 by rotating the fixing knob 208. At this time, the mounting block 205 can be moved along the length direction of the support plate 201. The relative position of the arc-shaped clamping plate 206 and the support plate 201 can be adjusted by moving the mounting block 205, so that the position of clamping the patient's legs can be adjusted according to needs, which is convenient for different patients to use and further improves the practicality of the device.

[0056] The specific implementation of the above-mentioned positioning drill is as follows:

[0057] The patient's legs are placed on the two sets of support plates 201 and between the two sets of arc-shaped clamping plates 206, and the support roller 20 is placed against the concave part below the knee. Then, the threaded sleeve 203 is rotated to cooperate with the first screw rod 204 to drive the first screw rod 204 to move upward or downward to drive the support roller 20 to rise or fall. The rise or fall of the support roller 20 can drive the patient's knee to rise or fall, and the patient's calf and thigh are rotated closer or farther through the two sets of support plates 201 to adjust the patient's knee bending angle. When the patient's knee bending angle is adjusted to a suitable angle, the threaded sleeve 203 is stopped from rotating to adjust the support roller 20. The roller 20 and the support plate 201 are fixed to facilitate adjusting the bending angle of the patient's knee according to the surgical requirements, and then by rotating the bidirectional screw 207 and cooperating with the two sets of guide blocks 2061 threads, the two sets of guide blocks 2061 can be driven to drive the two sets of arc-shaped clamping plates 206 to move relatively close. The two sets of arc-shaped clamping plates 206 move relatively close to each other to clamp the patient's legs, thereby fixing the patient's legs on the support plate 201, preventing the patient's legs from slipping off the two sets of support plates 201 or producing relative movement during the operation, which is convenient for fixing the knee bending angle and further improving the stability of the drilling operation.

[0058] Then, by starting the first motor 302 to drive the bevel gear 303 on the output shaft to rotate, the bevel gear 303 rotates and meshes with another set of bevel gears 303 to drive the connecting plate 301 to rotate, and the connecting plate 301 rotates to drive the arc guide frame 30 to rotate. The arc guide frame 30 rotates to drive the drilling rig 40 to rotate through the mounting seat 304 and the mounting frame 402. It is convenient to drive the arc guide frame 30 to drive the drilling rig 40 to rotate, and then by starting the second motor 307 to drive the worm 305 to rotate, the worm 305 rotates and meshes with the worm wheel ring 306, so that the worm 305 can drive the mounting seat 304 to move along the arc direction of the arc guide frame 30, so that the mounting seat 304 drives the drilling rig 40 to move along the arc direction of the arc guide frame 30 through the mounting frame 402, and the second motor 307 is stopped to stop the worm 305 from rotating. The worm 305 stops rotating and meshes with the worm wheel ring 306 to form a self-locking function, so as to fix the drill 40. By driving the arc guide frame 30 to drive the drill 40 to rotate and drive the drill 40 to move along the arc direction of the arc guide frame 30, the drill 40 can be made to move in a hemispherical trajectory around the patient's knee to adjust the hole rotation angle of the drill 40, thereby increasing the adjustment range of the drilling angle of the drill 40 and improving the practicability of the device. When the drilling angle of the drill 40 is adjusted, the third motor 403 is started to drive the second screw 401 to rotate, and the second screw 401 rotates and cooperates with the mounting seat 304 thread to drive the mounting frame 402 to drive the drill 40 to move radially along the arc guide frame 30. The drill 40 moves radially along the arc guide frame 30 to perform drilling decompression operation on the knee joint, and driving the drill 40 to drill holes is convenient and stable.

[0059] 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 aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the scope of the claims and specification of the present invention.

Claims

1. A positioning drill, characterized in that: include: A base (10) is provided with a support column (101) at the top, and a mounting plate (102) is provided at the top of the support column (101); A kneeling mechanism, comprising a support roller (20), a support plate (201), a connecting seat (202) and a lifting assembly, wherein both ends of the mounting plate (102) are provided with the connecting seats (202) which can slide along the length direction thereof, the two groups of the connecting seats (202) are hingedly connected to the support plates (201), the opposite ends of the two groups of the support plates (201) are hingedly connected to the support roller (20), and the lifting assembly connects the mounting plate (102) and the support roller (20) and is used for driving the support roller (20) to rise and fall in a vertical direction; A positioning mechanism, comprising an arc-shaped guide frame (30), a rotating assembly and a moving assembly, wherein the arc-shaped guide frame (30) is connected to the support column (101) via the rotating assembly so that the arc-shaped guide frame (30) can rotate around the knee flexion mechanism, and the moving assembly is arranged on the arc-shaped guide frame (30) and can move along the arc direction thereof; and The drilling mechanism comprises a drilling machine (40) and a feeding assembly. The drilling machine (40) is arranged on the moving assembly through the feeding assembly. The feeding assembly can be adjusted to drive the drilling machine (40) to slide radially along the arc-shaped guide frame (30).

2. A positioning drill according to claim 1, characterized in that: A plurality of groups of limiting rods (2021) are arranged at opposite ends of the two groups of connecting seats (202), and a plurality of groups of limiting holes (1021) are provided at both ends of the mounting plate (102), and the plurality of groups of limiting rods (2021) can be slidably arranged in the plurality of groups of limiting holes (1021) along the length direction of the mounting plate (102).

3. A positioning drill according to claim 1, characterized in that: The lifting assembly comprises a threaded sleeve (203) and a first screw rod (204); a telescopic hole (1022) is provided at the top of the mounting plate (102); the first screw rod (204) can be slidably inserted into the telescopic hole (1022) in a vertical direction, and the top end is connected to the supporting roller (20); the threaded sleeve (203) is rotatably arranged on the mounting plate (102) and is threadedly connected to the first screw rod (204).

4. A positioning drill according to claim 1, characterized in that: The rotating assembly comprises a connecting plate (301), a first motor (302) and a bevel gear (303); one end of the connecting plate (301) is sleeved on the support column (101), and the other end is connected to the arc-shaped guide frame (30); the first motor (302) is arranged on the connecting plate (301); the bevel gear (303) is coaxially arranged on the output shaft of the first motor (302) and the support column (101); and two groups of the bevel gears (303) are meshed.

5. A positioning drill according to claim 1, characterized in that: The moving assembly comprises a mounting seat (304), a worm (305), a worm wheel ring (306) and a second motor (307); the mounting seat (304) is slidably arranged on the arc-shaped guide frame (30) along the arc direction of the arc-shaped guide frame (30); the worm (305) is rotatably arranged on the mounting seat (304); the worm wheel ring (306) is coaxially arranged on the circumference of the arc-shaped guide frame (30); the worm (305) is meshed with the worm wheel ring (306); the second motor (307) is arranged on the mounting seat (304), and the output end is coaxially connected to the worm (305).

6. A positioning drill according to claim 5, characterized in that: The feeding assembly comprises a second screw rod (401), a mounting frame (402) and a third motor (403); the mounting frame (402) is arranged on the mounting seat (304) so ​​as to be radially slidable along the arc-shaped guide frame (30); the drilling rig (40) is fixed to the mounting frame (402) by bolts; the second screw rod (401) is arranged radially along the arc-shaped guide frame (30) and is rotatably arranged on the mounting frame (402) and is threadedly connected to the mounting seat (304); the third motor (403) is arranged on the mounting frame (402), and the output end is coaxially connected to the second screw rod (401).

7. A positioning drill according to claim 1, characterized in that: The knee flexion mechanism further comprises a clamping assembly; the clamping assembly is provided on both sets of the support plates (201), and the two sets of the clamping assemblies are used to fix the patient's legs on the two sets of the support plates (201).

8. A positioning drill according to claim 7, characterized in that: The clamping assembly comprises a mounting block (205), an arc-shaped clamping plate (206) and a driving member; the mounting block (205) is arranged on the support plate (201); the two groups of arc-shaped clamping plates (206) can be slidably arranged on the mounting block (205) along the width direction of the support plate (201); the driving member is rotatably arranged on the mounting block (205) and is connected to the two groups of arc-shaped clamping plates (206); rotating the driving member can drive the two groups of arc-shaped clamping plates (206) to move relatively closer or farther.

9. A positioning drill according to claim 8, characterized in that: The driving member comprises a bidirectional screw (207); two groups of guide grooves (2051) are provided at the top of the mounting block (205) opposite to each other; two groups of guide blocks (2061) are provided at the bottom of the two groups of arc-shaped clamping plates (206) opposite to each other; the two groups of guide blocks (2061) can be slidably arranged in the two groups of guide grooves (2051) along the width direction of the support plate (201); the bidirectional screw (207) can be rotatably arranged in one group of the guide grooves (2051), and the two ends are respectively threadedly connected with the two groups of guide blocks (2061) in the same guide groove (2051).

10. A positioning drill according to claim 8, characterized in that: The mounting block (205) is provided with a through slot (2052), and the through slot (2052) is sleeved on the support plate (201) so that the mounting block (205) can move along the length direction of the support plate (201). The mounting block (205) is threadedly connected with a fixing knob (208), and rotating the fixing knob (208) can cause one end of the fixing knob (208) to abut against the support plate (201).

Images