CN219147874U

CN219147874U - T-shaped electric driving handle for fixing pedicle screw

Info

Publication number: CN219147874U
Application number: CN202222099628.4U
Authority: CN
Inventors: 朱悦; 吴昊; 冯军
Original assignee: First Hospital of China Medical University
Current assignee: First Hospital of China Medical University
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2023-06-09
Anticipated expiration: 2032-08-10

Abstract

The utility model belongs to the technical field of medical auxiliary appliances, and particularly relates to a T-shaped electric driving handle for fixing pedicle screws, which comprises a grab handle, wherein the left side of the grab handle is connected with a detachable sleeve, the left side of the sleeve is connected with a detachable locking chuck, the left side of the grab handle is provided with a detachable fixing support, the fixing support is positioned in an inner cavity of the sleeve, the inner side of the fixing support is provided with a speed measuring motor, a torsion limiter and an electric control mechanical automatic gearbox, and the left end of a rotor of the speed measuring motor and the right end of a rotating shaft of the electric control mechanical automatic gearbox are respectively connected with the left side and the right side of the torsion limiter. The grip of the T-shaped handle is provided with a motor revolution adjusting knob which is embodied in the form of a roller. The thumb toggles the roller to realize the function of increasing or decreasing the rotation speed of the motor. This device adopts the motor that tests the speed, through measuring the motor pivoted number of turns that tests the speed, and then can obtain the rotatory number of turns of pedicle screw, because pedicle screw has fixed screw pitch, through number of turns and screw pitch can be accurate learn the degree of depth that pedicle screw was twisted.

Description

T-shaped electric driving handle for fixing pedicle screw

Technical Field

The utility model relates to the technical field of medical auxiliary appliances, in particular to a T-shaped electric driving handle for fixing pedicle screws.

Background

When an abnormality occurs in the spine of a patient, an orthopedic doctor is often required to perform surgical treatment. For example, relative motion at one or more portions of the spine may be problematic due to developmental problems or trauma to such sites, and it may be desirable to stop relative motion of the vertebrae at such locations (e.g., spinal fusion). Typical types of abnormalities include degenerative disc disease, spondylolisthesis, trauma, deformity, tumor, stenosis, and the like. The spine and spinal cord of a patient extend from the skull to the pelvis, forming the longitudinal axis of the patient, and are composed of vertebral bodies separated by fibrocartilage structures (intervertebral discs), which are connected by ligaments. The spine protects the spinal cord and provides support, and the spinal cord and nerve fiber bundles extending from the spinal cord form a central nervous system that establishes communication between the brain and other parts of the body. The spine can help the human body to realize the movement function through the relative movement between the adjacent vertebral bodies.

Traditional spinal fusion is a surgical procedure that permanently or temporarily secures adjacent vertebral bodies. In this approach, pedicle screws are attached to adjacent vertebral bodies as anchor points through which other fixed endophytes are attached to each other to stop relative motion between the adjacent vertebral bodies. The physician typically secures the pedicle screw to the pedicle using a surgical screwdriver. In order to avoid damaging the spinal cord and the nerve fiber bundles extending between the vertebrae, a very careful prognosis of the trajectory of each screw into the vertebral body is required.

This is a physically complex procedure for the orthopedics to screw in and retract the pedicle screw. In particular, orthopedics use a manual screwdriver to ensure that the screw reaches the final position exactly along a predetermined trajectory and forms a strong connection. The manual screwdriver needs an orthopedics doctor to manually apply a relatively high torque, and the orthopedics doctor judges whether the pedicle screw is firmly installed through hand feeling.

The electrically driven handle reduces the likelihood of fatigue and re-use injuries for the orthopaedic surgeon. The working efficiency of the electric handle is far higher than that of the traditional manual nail implantation, so that the operation time can be greatly shortened. The screw is screwed in safely and quickly, the damage to the bone can be reduced, the screwing force of the pedicle screw is increased, and the stability of the pedicle screw is further improved. The electric driving handle can freely adjust the rotating speed, and realizes the variable frequency speed regulation function by supplementing and adjusting the power factor, so that the handle has the advantages of preventing the nail from slipping, ensuring the nail feeding direction to meet the expectations and the like, and is more close to the use habit of doctors. The optimized variable-frequency speed regulation technology has overspeed or overload protection design, and can ensure that the rotation number of the handle is in a safe range, thereby being safe and labor-saving.

Aiming at the technical requirements, the utility model designs the T-shaped electric driving handle which is suitable for being held by an orthopedics doctor and can limit the torque force to fix the pedicle screw.

Disclosure of Invention

The utility model aims to provide a T-shaped electric driving handle for fixing pedicle screws.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a T type electric drive handle for fixing pedicle of vertebral arch screw, includes the grab handle, the left side of grab handle is connected with detachable sleeve, telescopic left side is connected with detachable locking chuck, detachable fixed bolster is installed in the left side of grab handle, the fixed bolster is arranged in telescopic inner chamber, speed measuring motor, torque limiter and automatically controlled mechanical automatic gearbox are installed to the inboard of fixed bolster, speed measuring motor's rotor left end and with automatically controlled mechanical automatic gearbox's pivot right-hand member are connected with the left and right sides of torque limiter respectively, automatically controlled mechanical automatic gearbox's pivot left end is connected with the adapter shaft, the body left side of adapter shaft is connected with anchor clamps, square draw-in groove has been seted up in the body left side of anchor clamps, locking chuck centre gripping is in the outside of anchor clamps.

Preferably, the body of the grab handle is provided with a mounting groove, a battery and a wireless charging coil are mounted on the inner side of the mounting groove, and the wireless charging coil is connected with the battery through a wire.

Preferably, the outside of grab handle is inlayed and is had switch, signal transmitter, torsion regulating switch, revolution adjust knob, battery, motor, signal transmitter and torsion regulating switch are measured speed through wire and switch, signal transmitter passes through the wire and is connected with motor that tests speed, torsion regulating switch passes through the wire and is connected with automatically controlled mechanical automatic gearbox.

Preferably, the fixed support comprises a cover plate at the left side and a cover plate at the right side, T-shaped guide rails are connected between the cover plate at the left side and the right side, the number of the T-shaped guide rails is two, and sliding blocks are arranged at the outer sides of the two T-shaped guide rails.

Preferably, the upper side of the T-shaped guide rail and the lower side of the lower T-shaped guide rail are both connected with baffles, and the left side and the right side of the baffles are respectively connected with left side cover plates and right side cover plates.

Preferably, the locking chuck comprises a fixed end, the left side of the fixed end is movably connected with a locking end, a trapezoid groove is formed in the transverse direction of the body of the locking end, and a thread groove is formed in the right side of the body of the fixed end.

Preferably, the right end of the fixture is provided with a hexagonal hole, the left end of the adapter shaft is provided with a hexagonal head, and the hexagonal head is inserted into the hexagonal hole.

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

1) The device utilizes the torque limiter to limit the torque, when the maximum torque applied by the speed measuring motor exceeds 4.5 N.m, the torque limiter is automatically disconnected, and the rotating shaft of the automatic gearbox of the electric control machine is not rotated at the moment, so that the pedicle screw is prevented from obtaining excessive torque, and the screw is prevented from slipping due to torque overload;

2) This device adopts the motor that tests the speed, through measuring the motor pivoted number of turns that tests the speed, and then can obtain the rotatory number of turns of pedicle screw, because pedicle screw has fixed pitch, can be accurate learn the degree of depth that pedicle screw was screwed in through number of turns and pitch, and then accurate control pedicle screw's the degree of depth of screwing in.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional top view of the present utility model;

FIG. 3 is a schematic view of a fixing bracket according to the present utility model;

fig. 4 is a schematic diagram of a cross-sectional top view of a locking clip of the present utility model.

In the figure: 1 grab handle, 2 sleeve, 3 locking chuck, 4 anchor clamps, 5 adapter shaft, 6 speed measuring motor, 7 torsion limiter, 8 automatically controlled mechanical automatic gearbox, 9 fixed bolster, 10 battery, 11 wireless charging coil, 12 signal transmitter are closed, 13 torsion regulating switch, 14 switch, 15 revolution regulating knob.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Examples:

referring to fig. 1-4, the present utility model provides a technical solution: a T-shaped electric driving handle for fixing pedicle screws comprises a grab handle 1, the grab handle 1 is arranged to be T-shaped, can be conveniently supported by hands of orthopedics doctors, a positioning hole is further formed in a body of the grab handle 1, a robot based on navigation is arranged in the prior art, a robot arm can be matched with the grab handle 1 for installation, further the robot is used for controlling the device, a detachable sleeve 2 is connected to the left side of the grab handle 1, threads are arranged on the bodies of the sleeve 2 and the grab handle 1, the sleeve 2 and the grab handle 1 are in threaded connection, a detachable locking chuck 3 is connected to the left side of the sleeve 2 through the threads, a detachable fixed support 9 is arranged on the left side of the grab handle 1, the fixed support 9 is located in an inner cavity of the sleeve 2, the sleeve 2 can be used for connecting the locking chuck 3, the fixed support 9 is also used for protecting, a motor 6, a torque limiter 7 and an electric control automatic gearbox 8 are arranged on the inner side of the fixed support 9, the sleeve 6 is connected with the electric control gearbox, the sleeve 2 is provided with threads, the sleeve 2 and the grab handle 1, the grab handle 1 is in threaded connection with the screw, the sleeve 2 and the grab handle 1 is in the T-shaped electric driving handle, the T-shaped electric driving handle is connected to the T-shaped electric driving handle is in the T-shaped handle, the T-shaped electric driving handle is convenient for fixing pedicle screw, the pedicle screw is convenient to be fixed by the orthopaedics, the orthopaedics and the orthopaedics doctors can conveniently and the orthopaedics through the screw through threads, the screw. The available maximum torque force of the clamp 4 can be adjusted through the change of the gear, the left end of the rotor of the speed measuring motor 6 and the right end of the rotating shaft of the electric control mechanical automatic gearbox 8 are respectively connected with the left side and the right side of the torque limiter 7, the left end of the rotating shaft of the electric control mechanical automatic gearbox 8 is connected with the switching shaft 5, the speed measuring motor 6 can drive the switching shaft 5 to rotate positively and negatively through the positive and negative rotation, the clamp 4 is driven to rotate positively and negatively, the left end of the body of the switching shaft 5 is connected with the clamp 4, a square clamping groove is formed in the left side of the body of the clamp 4 and used for clamping square instruments, the square clamping groove is further used for screwing pedicle screws, and the locking clamp 3 is clamped on the outer side of the clamp 4.

The body of grab handle 1 has seted up the mounting groove, and battery 10 and wireless charging coil 11 are installed to the inboard of mounting groove, and wireless charging coil 11 passes through the wire to be connected with battery 10, adopts wireless charging technique, can conveniently charge this device.

In order to conveniently control the circuit in the device, the outside of the grab handle 1 is embedded with a power switch 14, a signal transmitter 12, a torsion adjusting switch 13 and a revolution adjusting knob 15, wherein the power switch 14 is used for controlling the connection of a total power supply and the switch of a speed measuring motor 6, the speed measuring motor 6 automatically detects the revolution number of a rotor of the grab handle, and transmits measurement data to the signal transmitter 12, the signal transmitter 12 can be connected with external display equipment through a wireless network or Bluetooth, the revolution number of the rotor of the speed measuring motor 6 is further known, and the torsion adjusting switch 13 is used for controlling the cooperation of gears in an electric control mechanical automatic gearbox 8, so that the revolution speed and the torque of the clamp 4 are adjusted. The revolution number adjusting knob 15 controls the tachometer motor 6 by supplementing and adjusting power factors, so that free adjustment of revolution numbers can be realized.

The fixed bolster 9 includes the apron 91 of controlling the side, is connected with T type guide rail 93 between the left and right sides cover 91, and the quantity of T type guide rail 93 is two, and two T type guide rail 93's the outside all is provided with slider 94, and speed measuring motor 6, torsion limiter 7 and automatically controlled mechanical automatic gearbox 8 all install at slider 94, and then conveniently to speed measuring motor 6, torsion limiter 7 and automatically controlled mechanical automatic gearbox 8 business turn over demountable installation and position control.

The upper side of upside T type guide rail 93 and downside of downside T type guide rail 93 all are connected with baffle 92, and the left and right sides of both sides baffle 92 is connected with left and right side cap plate 91 respectively, protects speed measuring motor 6, torsion limiter 7 and automatically controlled mechanical automatic gearbox 8 through baffle 92, can set up the metallic channel on the body of baffle 92 simultaneously, and then is used for the winding displacement.

The locking chuck 3 includes fixed end 32, and fixed end 32's left side swing joint has locking end 31, and trapezoidal slot 33 has been seted up transversely to the body of locking end 31, and threaded slot has been seted up on fixed end 32's body right side, and fixed end 32 and sleeve 2 spiro union, through screwing up fixed end 32, fixed end 32 drive locking end 31 right shift, and trapezoidal slot 33 on the locking end 31 of right shift can compress tightly anchor clamps 4, and then the square clamping groove of messenger's anchor clamps 4 reduces, and then presss from both sides square apparatus.

The hexagonal hole has been seted up to the right-hand member of anchor clamps 4, and the left end of adapter shaft 5 is provided with the hexagon head, and the hexagon head is pegged graft in the hexagonal hole, can make things convenient for the dismantlement of anchor clamps 4 like this, and then can change not unidimensional anchor clamps 4 according to square apparatus of difference.

Working principle: when the device is used, the speed measuring motor 6 is started, the speed measuring motor 6 drives the rotating shaft of the electric control mechanical automatic gearbox 8 to rotate, the rotating shaft of the electric control mechanical automatic gearbox 8 drives the switching shaft 5 to rotate, the switching shaft 5 drives the clamp 4 to rotate, the clamp 4 drives the square instrument to rotate, when the rotor of the speed measuring motor 6 drives the square instrument to rotate forwards, the pedicle screw can be screwed down by the square instrument, when the rotor of the speed measuring motor 6 drives the square instrument to rotate reversely, the pedicle screw can be unscrewed by the square instrument, meanwhile, the data of the rotation number of the rotor of the speed measuring motor 6 can be sent out by the signal transmitter 12, and therefore a orthopedics doctor can know the rotation number of the rotor of the speed measuring motor 6 conveniently.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A T-shaped electric drive handle for fixing pedicle screws, comprising a grip (1), characterized in that: the left side of grab handle (1) is connected with detachable sleeve (2), the left side of sleeve (2) is connected with detachable locking chuck (3), detachable fixed bolster (9) are installed in the left side of grab handle (1), fixed bolster (9) are arranged in the inner chamber of sleeve (2), speed measuring motor (6), torque limiter (7) and automatically controlled mechanical automatic gearbox (8) are installed to the inboard of fixed bolster (9), the rotor left end of speed measuring motor (6) and with the pivot right-hand member of automatically controlled mechanical automatic gearbox (8) are connected with the left and right sides of torque limiter (7) respectively, the pivot left end of automatically controlled mechanical automatic gearbox (8) is connected with adapter shaft (5), the body left end of adapter shaft (5) is connected with anchor clamps (4), square clamping groove has been seted up in the body left side of anchor clamps (4), the outside of anchor clamps (4) are held to locking chuck (3).

2. A T-shaped electric drive handle for securing pedicle screws as claimed in claim 1, wherein: the battery charging device is characterized in that a mounting groove is formed in the body of the grab handle (1), a battery (10) and a wireless charging coil (11) are mounted on the inner side of the mounting groove, and the wireless charging coil (11) is connected with the battery (10) through a lead.

3. A T-shaped electric drive handle for securing pedicle screws as claimed in claim 2, wherein: the electric speed measuring device is characterized in that a power switch (14), a signal emitter (12), a torsion adjusting switch (13) and a revolution adjusting knob (15) are embedded in the outer side of the grab handle (1), the battery (10), the speed measuring motor (6), the signal emitter (12) and the torsion adjusting switch (13) are connected with the power switch (14) through wires, the signal emitter (12) and the revolution adjusting knob (15) are connected with the speed measuring motor (6) through wires, and the torsion adjusting switch (13) is connected with an electric control mechanical automatic gearbox (8) through wires.

4. A T-shaped electric drive handle for securing pedicle screws as claimed in claim 1, wherein: the fixed support (9) comprises a cover plate (91) on the left side and a cover plate (91) on the right side, T-shaped guide rails (93) are connected between the cover plate (91) on the left side and the right side, the number of the T-shaped guide rails (93) is two, and sliding blocks (94) are arranged on the outer sides of the two T-shaped guide rails (93).

5. A T-shaped electric drive handle for securing pedicle screws as claimed in claim 4, wherein: the upper side of the T-shaped guide rail (93) and the lower side of the T-shaped guide rail (93) are both connected with a baffle plate (92), and the left side and the right side of the baffle plate (92) are respectively connected with a left side cover plate (91) and a right side cover plate.

6. A T-shaped electric drive handle for securing pedicle screws as claimed in claim 1, wherein: the locking chuck (3) comprises a fixed end head (32), the left side of the fixed end head (32) is movably connected with a locking end head (31), a trapezoid groove (33) is formed in the transverse direction of the body of the locking end head (31), and a thread groove is formed in the right side of the body of the fixed end head (32).

7. A T-shaped electric drive handle for securing pedicle screws as claimed in claim 1, wherein: hexagonal holes are formed in the right end of the clamp (4), a hexagonal head is arranged at the left end of the adapter shaft (5), and the hexagonal head is inserted into the hexagonal holes.