Universal screwdriver with track shears

Abstract

The invention relates to a universal screwdriver with a track cutter, comprising a universal screwdriver, a track cutter mounted outside the universal screwdriver and a rotating component mounted on the universal screwdriver. The universal screwdriver comprises a handle, a cone sleeve fixedly connected to one end of the handle and a universal hose inserted into the cone sleeve. A straight rail is arranged at one end of the track cutter, and the straight rail is sleeved outside the cone sleeve. A cone head is fixedly connected to one end of the universal hose away from the handle, and a curved rail is fixedly connected to one end of the straight rail close to the cone head. The universal hose is inserted into the curved rail so that the axis of the cone head does not coincide with the axis of the cone sleeve. The invention has the advantages of being able to change the cone head of the universal screwdriver and fix the direction of the cone head.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a universal screwdriver with a track shear. Background Art

[0002] In orthopedic surgery, the surgical area of ​​bones such as the mandible or hip joint cannot be fully exposed to avoid excessive damage due to their deep layers, complex structures, and rich blood vessels in the surrounding tissues. Screws in deep bones are often difficult to install due to the narrow space, and common biological screw installation tools are similar to ordinary screwdrivers. The cone handle of ordinary screwdrivers is long and straight, and it is difficult to reach into the operable area to contact the screw, which has great limitations in the medical field.

[0003] The utility model patent with authorization announcement number CN205359615U discloses a universal screwdriver, which consists of a movable handle, a universal joint shaft and a universal ball head, wherein the universal joint head and the screwdriver head are connected through the universal ball head, so that the universal joint head, the universal ball head and the screwdriver head form a universal joint structure to achieve multi-angle changes of the screwdriver head, which is convenient for reaching into a narrow area to remove or install bone screws; however, because the screwdriver head is too flexible, it is not easy to control when twisting, and the universal ball head has a large range of movement when turning the screw, which is easy to contact the patient's affected area or blood vessels, which is relatively dangerous. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a universal screwdriver with a track shear in view of the defects in the prior art.

[0005] In order to solve the above technical problems, the present invention provides a universal screwdriver with a track cutter, comprising a universal screwdriver, a track cutter mounted outside the universal screwdriver and a rotating component mounted on the universal screwdriver, the universal screwdriver comprising a handle, a cone sleeve fixedly connected to one end of the handle and a universal hose inserted into the cone sleeve, a straight rail is provided at one end of the track cutter, the straight rail is sleeved outside the cone sleeve, wherein a cone head is fixedly connected to one end of the universal hose away from the handle, a curved rail is fixedly connected to one end of the straight rail close to the cone head, and the universal hose is inserted into the curved rail so that the axis of the cone head does not coincide with the axis of the cone sleeve.

[0006] By adopting the above technical solution and the universal hose commonly found on the market, not only can the cone head be rotated at multiple angles and in multiple directions to adapt to operating environments of different sizes, but the rotation range is always kept within the cross-sectional range of the universal hose. Compared with the more abrupt rotation range of the universal joint, the probability of the screwdriver contacting the patient's body is reduced, and the occurrence of medical accidents is effectively reduced; and by providing a track shear with a curved track, the swing of the cone head is effectively restricted so that the cone head can only rotate in one direction, ensuring that the bone screw can be stably installed or removed from the bone. At the same time, in terms of installation method, the curved track can be opened or merged simply by opening or merging the track shears. The operation is simple and convenient, the structure is simple, and the practicability is strong.

[0007] As a further illustration of the present invention, preferably, a cone seat is arranged between the universal hose and the cone head, the universal hose is fixedly connected to the cone seat, the cone head is inserted into the cone seat, and the outer diameter of the cone seat is greater than the outer diameter of the curved rail.

[0008] By adopting the above technical solution, a cone seat is provided to prevent the cone head from moving along the axial direction of the cone head, thereby ensuring that the screwdriver can stably output the axial force to the bone screw for installing the bone screw.

[0009] As a further illustration of the present invention, preferably, a clamp block is fixedly connected to one end of the curved rail close to the cone seat, a semi-bead groove is opened in the clamp block, the universal hose is embedded in the groove, and the groove diameter is 0.5mm to 2mm larger than the outer diameter of the universal hose.

[0010] By adopting the above technical solution, setting the clamp block can further stabilize the deflection direction of the universal hose, and setting a spacing of 0.5mm to 2mm allows the universal hose to be embedded in the clamp block without damaging the universal hose, while also ensuring the stability of the cone head's rotation direction.

[0011] As a further illustration of the present invention, preferably, a groove is provided at one end of the clamping block close to the conical seat, the groove is semi-conical, and the end with a larger diameter of the groove faces the conical seat.

[0012] By adopting the above technical solution, the contact area between the cone seat and the clamping block is reduced, making the cone seat easier to rotate.

[0013] As a further illustration of the present invention, preferably, a bent rod is fixedly connected between the track shears and the straight rail, so that the length direction of the track shears is not the same as the length direction of the straight rail.

[0014] By adopting the above technical solution, the track shears do not contact the universal screwdriver, which facilitates separate operation and avoids mutual interference.

[0015] As a further illustration of the present invention, preferably, the bending angle of the bending rod ranges from 120° to 160°.

[0016] By adopting the above technical solution, the doctor can hold the orbital shears and the handle with one hand at the same time, which is convenient for the subsequent doctor to use the other hand to rotate the rotating parts, so that one person can operate multiple sets of instruments at the same time, reducing the workload of other doctors and not placing a heavy workload on the doctor performing the operation.

[0017] As a further illustration of the present invention, preferably, one end of the universal hose extending into the handle is fixedly connected to a connecting block, a connecting groove is provided in the middle of the connecting block, and a rotating component is inserted into the connecting groove to drive the steel rope in the universal hose to rotate.

[0018] By adopting the above technical solution, the connection groove is provided so that the rotating component can be connected to the connecting block, and then the universal hose can be rotated by driving the rotating component.

[0019] As a further illustration of the present invention, preferably, the rotating component is a knob or a motor, wherein the outer diameter of the knob is larger than the outer diameter of the handle, and the knob does not contact the track shears.

[0020] By adopting the above technical solution, the knob can be manually rotated, which is suitable for shorter bone screws. The feed amount or rotation amount of the bone screw can be freely controlled to avoid secondary injury to the patient caused by a faster speed. The motor can be automatically rotated, which is suitable for longer bone screws, saving time and reducing the workload of doctors.

[0021] As a further explanation of the present invention, preferably, the middle portion of the connecting groove is in the shape of a circular hole, a square hole is opened on one side of the circular hole, a boss with the same shape as the connecting groove is provided at the bottom of the knob, the boss or the motor shaft is embedded in the connecting groove, and the knob and the connecting block are both magnetic.

[0022] By adopting the above technical solution, the connection block can be used to install both the knob and the motor, killing two birds with one stone. At the same time, the knob and the motor can be adsorbed on the connection block to prevent the knob and the motor from falling off.

[0023] As a further illustration of the present invention, preferably, square fixing grooves are provided on both sides of the connecting block on the top surface of the handle, and when the rotating component is a motor, the motor seat installed on the motor is embedded in the fixing grooves to fix the position of the motor.

[0024] By adopting the above technical solution, a fixing groove is set to limit the rotation of the motor body, thereby preventing the motor shaft from rotating and outputting torque to the motor body, so that the motor body rotates and ensures that the motor can stably output torque to the cone head.

[0025] The implementation of the present invention has the following beneficial effects:

[0026] 1. The present invention provides a universal screwdriver with a universal hose and a track shear with a curved track, which can not only realize the changeability of the cone head position and the rotation direction, but also ensure that after the cone head position is selected, its rotation direction can be fixed, thereby ensuring that the bone screw can be stably screwed into or out of the bone;

[0027] 2. The direction of the cone head can be further stabilized by setting a clamp block without damaging the universal hose;

[0028] 3. By setting up a variety of rotating parts, it has adapted to different types of bone screws and different operating environments, improving the applicability of the universal screwdriver and orbital shears. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front view of the present invention;

[0030] Figure 2 is a rear view of the present invention;

[0031] Figure 3 is a side view of the present invention;

[0032] Figure 4 is a cross-sectional view of the present invention;

[0033] Figure 5 yes Figure 4 A magnified view of middle;

[0034] Figure 6 yes Figure 4 Enlarged view of middle B;

[0035] Figure 7 yes Figure 4 Enlarged view of middle C;

[0036] Figure 8 It is a handle structure diagram of the present invention.

[0037] Description of reference numerals:

[0038] 1. Universal screwdriver; 11. Handle; 12. Cone sleeve; 13. Universal hose; 14. Cone seat; 15. Cone head; 16. Connecting block; 17. Connecting groove; 18. Fixing groove; 2. Track shears; 21. Bending rod; 22. Straight rail; 23. Curved rail; 24. Clamping block; 25. Groove; 3. Rotating parts. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] A universal screwdriver with a track shear, combined Figure 1 , Figure 2 , comprising a universal screwdriver 1, a track shear 2 mounted outside the universal screwdriver 1, and a rotating component 3 mounted on the universal screwdriver 1, combined Figure 4 The universal screwdriver 1 comprises a handle 11, a cone sleeve 12 fixedly connected to one end of the handle 11 and a universal hose 13 inserted into the cone sleeve 12. The handle 11 is an ellipsoidal column for easy holding; the cone sleeve 12 is a metal round tube, and the universal hose 13 is a common universal hose, which is provided with a steel rope composed of multiple layers of interwoven steel wires. A cone seat 14 is fixedly connected to the end of the universal hose 13 away from the handle 11, and a cone head 15 is plugged into the cone seat 14. A magnetic piece is provided at the junction of the cone seat 14 and the cone head 15. Different types of cone heads 15 can be replaced by plugging in to adapt to different bone screws. The magnetic piece can enable the cone seat 14 to absorb the column cone head 15 to ensure that the cone head 15 is fixed and stable.

[0041] Combination Figure 1 , Figure 3 The track shear 2 is scissor-shaped, and the scissor end of the track shear 2 is fixedly connected with a bent rod 21, and the bending angle range of the bent rod 21 is between 120° and 160°, that is, multiple groups of track shears 2 with bent rods 21 of different angles are provided, which are convenient for replacement according to actual conditions; the bent rod 21 is fixedly connected with a straight rail 22 at one end away from the track shear 2, and the straight rail 22 is a semicircular tube, combined with Figure 5 The straight rail 22 is sleeved on the outside of the cone sleeve 12, and a curved rail 23 is fixedly connected to one end of the straight rail 12 near the cone head 15. The curved rail 23 is also a semicircular tube. The length of the curved rail 23 is less than the length of the straight rail 22. The length direction of the curved rail 23 is different from the length direction of the straight rail 22, and the angle between the two is also different according to the type of track shears 2; the universal hose 13 is inserted into the curved rail 23 and the cone seat 14 and the cone head 15 extend out of the curved rail 23. The outer diameter of the cone seat 14 is larger than the outer diameter of the curved rail 23. The cone seat 14 is set to prevent the cone head 15 from moving along the axial direction of the cone head 15, so as to ensure that the screwdriver can stably output the axial force to the bone screw for installing the bone screw.

[0042] Combination Figure 1 , Figure 3 and Figure 4When the bone screw needs to be installed or removed, first, according to the installation position of the bone screw and the surrounding environment, the universal hose 13 is bent to change the position of the cone head 15, and the angle between the cone head 15 and the cone sleeve 12 is measured. Then, the track shear 2 with the corresponding straight rail 22 and the curved rail 23 is taken out to cover the cone sleeve 12 and the universal hose 13, and the rotating component 3 is twisted at the same time. The cone head 15 is rotated by the rotating component 3, and the bone screw is installed and removed through the contact between the cone head 15 and the bone screw; the bending rod 21 with a bending angle of 120° to 160° is set, which not only makes the track shear 22 and the curved rail 23 with the corresponding angle included, but also makes the cone sleeve 12 and the universal hose 13 covered. The track shears do not contact the universal screwdriver, which is convenient for separate operation and avoids mutual interference. The doctor can also hold the track shears 2 and the handle 11 with one hand at the same time, which is convenient for the subsequent doctor to use the other hand to rotate the rotating component 3, so that multiple sets of instruments can be controlled by one person at the same time, reducing the workload of other doctors and not providing a large workload for the doctor performing the operation; and when performing surgical operations (such as joint replacement steps), the screws can be quickly screwed into the predetermined position, saving at least 5 to 10 minutes of surgical time, effectively shortening the operation time, and gaining more safe time for the patient.

[0043] Combination Figure 4 , Figure 6 A clamping block 24 is fixedly connected to one end of the curved rail 23 close to the cone seat 14, and a semi-bead-shaped groove is provided in the clamping block 24, and the universal hose 13 is embedded in the groove. The groove diameter is 0.5mm~2mm larger than the outer diameter of the universal hose. The provision of the clamping block 24 can further stabilize the deflection direction of the universal hose 13, and a spacing of 0.5mm~2mm is provided, so that the universal hose 13 can be embedded in the clamping block 24 without damaging the universal hose 13, and at the same time, the stability of the rotation direction of the cone head 15 can be ensured; a groove 25 is provided at one end of the clamping block 24 close to the cone seat 14, and the groove 25 is semi-conical, and the end with a larger diameter of the groove 25 faces the cone seat, thereby reducing the contact area between the cone seat 14 and the clamping block 24, so that the cone seat 14 is easier to rotate.

[0044] Combination Figure 4 , Figure 7 The end of the universal hose 13 extending into the handle 11 is fixedly connected with a connecting block 16, and a connecting groove 17 is opened in the middle of the connecting block 16. The rotating component 3 is a knob or a motor, wherein the outer diameter of the knob is larger than the outer diameter of the handle, and the knob does not contact the track shear 2. The rotating component 3 is inserted into the connecting groove 17 to drive the steel rope in the universal hose 13 to rotate. The connection groove 17 is provided so that the rotating component 3 can be connected to the connecting block 16, and then the universal hose 13 can be rotated by driving the rotating component 3; the knob can be manually rotated, which is suitable for bone screws with shorter lengths, and the feeding amount or rotation amount of the bone screws can be freely controlled to avoid secondary damage to the patient at a faster speed; the motor can be automatically rotated, which is suitable for bone screws with longer lengths, saving time and reducing the workload of doctors.

[0045] Combination Figure 7 , Figure 8 The middle part of the connecting groove 17 is in the shape of a circular hole, and a square hole is provided on one side of the circular hole. A boss with the same shape as the connecting groove 17 is provided at the bottom of the knob, and the boss or the motor shaft is embedded in the connecting groove 17. The knob and the connecting block 16 are both magnetic, so that the connecting block 16 can be installed with both the knob and the motor, killing two birds with one stone, and at the same time, the knob and the motor can be adsorbed on the connecting block 16 to prevent the knob and the motor from falling off; the top surface of the handle 11 is located on both sides of the connecting block 16 and has square fixing grooves 18. When the rotating component 3 is a motor, the motor seat installed on the motor is embedded in the fixing groove 18 to fix the position of the motor. The fixing groove 18 is set to limit the rotation of the motor body, so as to prevent the motor shaft from rotating and outputting torque to the motor body, so that the motor body rotates, and ensures that the motor can stably output torque to the cone head 15.

[0046] In summary, the present invention adopts the universal hose commonly seen on the market, which not only enables the cone head to rotate at multiple angles and in multiple directions, thereby adapting to operating environments of different sizes, but also the rotation range is always maintained within the cross-sectional range of the universal hose. Compared with the more abrupt rotation range of the universal joint, the probability of the screwdriver contacting the patient's body is reduced, and the occurrence of medical accidents is effectively reduced; and by providing a track shear with a curved track, the swing of the cone head is effectively restricted, so that the cone head can only rotate in one direction, ensuring that the bone screw can be stably installed or removed from the bone. At the same time, in terms of installation method, the curved track can be opened or merged only by opening or merging the track shears, which is simple and convenient to operate, simple in structure, and highly practical.

[0047] Finally, 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A universal screwdriver with a track shear, characterized in that: The invention comprises a universal screwdriver (1), a track shear (2) mounted outside the universal screwdriver (1), and a rotating component (3) mounted on the universal screwdriver (1); the universal screwdriver (1) comprises a handle (11), a cone sleeve (12) fixedly connected to one end of the handle (11), and a universal hose (13) inserted into the cone sleeve (12); one end of the track shear (2) is provided with a straight rail (22), and the straight rail (22) is sleeved outside the cone sleeve (12), wherein: The end of the universal hose (13) away from the handle (11) is fixedly connected with a cone head (15), and the end of the straight rail (22) close to the cone head (15) is fixedly connected with a curved rail (23). The universal hose (13) is inserted into the curved rail (23) so that the axis of the cone head (15) does not coincide with the axis of the cone sleeve (12).

2. A universal screwdriver with a track shear according to claim 1, characterized in that: A cone seat (14) is arranged between the universal hose (13) and the cone head (15), the universal hose (13) and the cone seat (14) are fixedly connected, the cone head (15) is inserted into the cone seat (14), and the outer diameter of the cone seat (14) is greater than the outer diameter of the curved rail (23).

3. A universal screwdriver with a track shear according to claim 2, characterized in that: A clamping block (24) is fixedly connected to one end of the curved rail (23) close to the cone seat (14), and a semi-bead-shaped groove is provided in the clamping block (24), and the universal hose (13) is embedded in the groove, and the groove diameter is 0.5mm to 2mm larger than the outer diameter of the universal hose (13).

4. A universal screwdriver with a track shear according to claim 3, characterized in that: A groove (25) is provided at one end of the clamping block (24) close to the cone seat (14). The groove (25) is in the shape of a semi-circular cone, and the end of the groove (25) with a larger diameter faces the cone seat (14).

5. A universal screwdriver with a track shear according to claim 1, characterized in that: A bent rod (21) is fixedly connected between the track shear (2) and the straight rail (22), so that the length direction of the track shear (2) is not the same as the length direction of the straight rail (22).

6. A universal screwdriver with a track shear according to claim 5, characterized in that: The bending angle of the bent rod (21) is in the range of 120° to 160°.

7. A universal screwdriver with a track shear according to claim 1, characterized in that: One end of the universal hose (13) extending into the handle (11) is fixedly connected with a connecting block (16), a connecting groove (17) is provided in the middle of the connecting block (16), and the rotating component (3) is inserted into the connecting groove (17) to drive the steel rope in the universal hose (13) to rotate.

8. A universal screwdriver with a track shear according to claim 7, characterized in that: The rotating component (3) is a knob or a motor, wherein the outer diameter of the knob is greater than the outer diameter of the handle, and the knob does not contact the track shears.

9. A universal screwdriver with a track shear according to claim 8, characterized in that: The middle of the connecting groove (17) is in the shape of a circular hole, one side of the circular hole is provided with a square hole, the bottom of the knob is provided with a boss having the same shape as the connecting groove (17), the boss or the motor shaft is embedded in the connecting groove (17), and the knob and the connecting block (16) are both magnetic.

10. A universal screwdriver with a track shear according to claim 9, characterized in that: The top surface of the handle (11) is provided with square fixing grooves (18) on both sides of the connecting block (16). When the rotating component (3) is a motor, the motor seat installed on the motor is embedded in the fixing grooves (18) to fix the position of the motor.

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