Remove the burr and screwdriver covering the screw.

Abstract

This utility model relates to the field of burs and screwdrivers, and particularly to burs and screwdrivers for removing cover screws, including a bur shaft; characterized in that: the top end of the bur shaft is provided with a bur working end, the bottom end of the bur shaft is provided with a bur connecting part, and both sides of the bur connecting part are provided with insert blocks; the bur shaft and the bur working end are an integral structure; the rear end of the insert block is provided with a movable groove on the inner side of the bur connecting part, and the inner wall of the movable groove is provided with a connecting spring; the insert block is movably connected to the bur connecting part through the connecting spring; this utility model improves the stability of the connection between the bur and the dental handpiece by having the insert blocks on both sides of the bur connecting part engage with the inner side of the dental handpiece when the bur connecting part is inserted into the dental handpiece; and by rotating the knob, the knob, through the second transmission rod, in conjunction with the transmission disc and the first transmission rod, drives the fixed block to move on the top surface of the screwdriver handle, facilitating the quick replacement of the screwdriver tip as needed or when the screwdriver tip is worn too much.

Description

Technical Field

[0001] This utility model relates to the field of machining needles and screwdrivers, and in particular to machining needles and screwdrivers for removing cover screws. Background Technology

[0002] In the field of dental implant restoration, implant cover screws and healing abutments play crucial roles. Implant cover screws are used in the first-stage surgery to seal the upper opening of the implant, preventing bone tissue from entering the screw holes and creating a favorable environment for osseointegration between the implant and alveolar bone. Healing abutments are installed in the second-stage surgery, aiding in the shaping of gingival soft tissue and preparing for the final permanent healing abutment and crown restoration. The entire implant restoration process demands extremely high stability and precision from each component.

[0003] Dental implant restoration surgery requires the use of burs and screwdrivers. In practice, due to limitations in material properties and manufacturing processes, surgical operation factors, individual patient differences, and postoperative factors, cases of implant cover screws and healing abutment stripping frequently occur. When implant cover screws or healing abutment stripping occurs, it is quite difficult to handle with existing methods.

[0004] Therefore, existing dental burs are not very stable when connected to dental handpieces, and are prone to slippage. In addition, most screwdrivers are one-piece structures, so when the screwdriver tip wears out, the entire screwdriver needs to be replaced, which makes them not very applicable. Utility Model Content

[0005] To overcome the problems of low stability and slippage when connecting existing dental burs to dental handpieces, and the fact that most screwdrivers are one-piece structures that require the entire screwdriver to be replaced when the tip wears out, thus limiting their applicability.

[0006] The technical solution of this utility model is as follows: the needle of the cover screw is removed, including the needle shaft; the needle shaft is characterized in that: the top end of the needle shaft is provided with a needle working end, the bottom end of the needle shaft is provided with a needle connecting part, and both sides of the needle connecting part are provided with insert blocks.

[0007] Preferably, when the bur connection is inserted into the dental handpiece, the inserts on both sides of the bur connection engage with the inside of the dental handpiece, which improves the stability of the connection between the bur and the dental handpiece. Furthermore, by rotating the knob, the knob, through the second transmission rod, in conjunction with the transmission disc and the first transmission rod, causes the fixing block to move on the top surface of the screwdriver handle, facilitating the operator to quickly replace the screwdriver tip as needed or when the screwdriver tip is worn excessively.

[0008] Preferably, the needle shaft and the working end of the needle are integrated into one structure. The outer side of the working end of the needle is marked with scale marks. The working end of the needle is a spiral cutting blade that surrounds the head of the working end. The spiral angle is 30°-45°. The cutting edge is made of sharp carbide material. The cutting edge width is 0.1-0.3 mm and the pitch is 0.5-1 mm.

[0009] Preferably, the rear end of the insert block is provided with a movable groove on the inner side of the needle connection part, and the inner wall of the movable groove is provided with a connecting spring. The insert block is movably connected to the needle connection part through the connecting spring.

[0010] The screwdriver with the screw cap removed also includes a screwdriver handle; characterized in that: a screwdriver tip is provided at the top of the screwdriver handle, a mounting groove is provided below the screwdriver tip on the inner side of the screwdriver handle, the bottom end of the screwdriver tip extends to the inner side of the mounting groove, a fixing block is provided on the outer side of the screwdriver tip at the top of the screwdriver handle, a transmission disc is provided below the fixing block on the inner side of the screwdriver handle, a first transmission rod is provided on the inner side of the transmission disc, the top end of the first transmission rod extends to one side of the fixing block, a knob is provided at the front end of the screwdriver handle, a second transmission rod is provided at one end of the knob on the inner side of the screwdriver handle, and the bottom end of the second transmission rod extends to the outer side of the transmission disc.

[0011] Preferably, the screwdriver handle has an anti-slip texture on the outside, three fixing blocks are provided, the number of first transmission rods is the same as the number of fixing blocks, and the top of the fixing block is provided with an arc block.

[0012] Preferably, gears are provided at both the upper and lower ends of the first transmission rod, and a toothed block is provided on one side of the top of the first transmission rod located on the outer end face of the fixed block. The gears mesh with the toothed block and the transmission disc, and the first transmission rod is connected to the fixed block and the transmission disc through the gears.

[0013] Preferably, a gear is provided at the intersection of the bottom end of the second transmission rod and the transmission disk, and the second transmission rod meshes with the transmission disk through the gear. A bevel gear is provided at the intersection of one end of the knob and the second transmission rod, and the knob is connected to the second transmission rod through the bevel gear.

[0014] The beneficial effects of this utility model are:

[0015] The bur and screwdriver covering the screw are removed. When the bur connection is inserted into the dental handpiece, the inserts on both sides of the bur connection engage with the inside of the dental handpiece, improving the stability of the connection between the bur and the handpiece. By rotating the knob, the knob drives the transmission disc to rotate via the second transmission rod. The transmission disc is connected to the fixing block via the first transmission rod. Thus, when the transmission disc moves the fixing block on the top surface of the screwdriver handle, it allows the operator to quickly replace the screwdriver tip as needed or when the tip is worn too much. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the screwdriver structure of the bur of this utility model;

[0017] Figure 2 The diagram shown is a schematic representation of the screwdriver structure of this utility model.

[0018] Figure 3 The diagram shown is a structural schematic of the needle connection part of this utility model;

[0019] Figure 4 The diagram shown is a structural schematic of the screwdriver handle of this utility model;

[0020] Figure 5 The diagram shown is a schematic representation of the inner structure of the screwdriver handle of this utility model.

[0021] Figure 6 The diagram shown is a structural schematic of the second transmission rod of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Needle bar; 2. Screwdriver handle; 3. Knob; 4. Screwdriver tip; 5. Needle connecting part; 6. Needle working end; 7. Insert block; 8. Movable groove; 9. Connecting spring; 10. Mounting groove; 11. Fixing block; 12. Transmission disc; 13. First transmission rod; 14. Gear block; 15. Second transmission rod; 16. Bevel gear. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-6 This utility model provides a technical solution: a bur, including a bur shaft 1; characterized in that: the top end of the bur shaft 1 is provided with a bur working end 6, the bottom end of the bur shaft 1 is provided with a bur connecting part 5, and both sides of the bur connecting part 5 are provided with inserts 7; the bur shaft 1 and the bur working end 6 are an integral structure; the outer side of the bur working end 6 is provided with scale markings; the bur working end 6 is a spiral cutting blade surrounding the head of the working end, with a spiral angle of 30°-45°; the cutting edge is made of sharp hard alloy material, the blade width is 0.1-0.3 mm, and the pitch is 0.5-1 mm; the rear end of the insert 7 is provided with a movable groove 8 inside the bur connecting part 5; the inner wall of the movable groove 8 is provided with a connecting spring 9; the insert 7 is movably connected to the bur connecting part 5 through the connecting spring 9, thereby facilitating the use of the screwdriver by the operator; and when the bur connecting part 5 is inserted into the dental handpiece, the inserts 7 on both sides of the bur connecting part 5 are engaged inside the dental handpiece, which improves the stability of the connection between the bur and the dental handpiece.

[0025] Please see Figures 2-3In this embodiment, the screwdriver also includes a screwdriver handle 2; the top of the screwdriver handle 2 is provided with a screwdriver head 4, the bottom of the screwdriver head 4 is provided with a mounting groove 10 located inside the screwdriver handle 2, the bottom end of the screwdriver head 4 extends to the inside of the mounting groove 10, the outer side of the screwdriver head 4 is provided with a fixing block 11 located at the top of the screwdriver handle 2, the bottom of the fixing block 11 is provided with a transmission disc 12 located inside the screwdriver handle 2, the inner side of the transmission disc 12 is provided with a first transmission rod 13, the top end of the first transmission rod 13 extends to one side of the fixing block 11, the front end of the screwdriver handle 2 is provided with a knob 3, one end of the knob 3 is provided with a second transmission rod 15 located inside the screwdriver handle 2, thereby facilitating the use of the screwdriver;

[0026] Please see Figures 3-5 The bottom end of the second transmission rod 15 extends to the outer side of the transmission disc 12. The outer side of the screwdriver handle 2 is provided with anti-slip texture. There are three fixing blocks 11. The number of first transmission rods 13 is the same as that of fixing blocks 11. Gears are provided at both the top and bottom ends of the first transmission rod 13. A toothed block 14 is provided on one side of the top of the first transmission rod 13, located on the outer end face of the fixing block 11. The gears, toothed blocks 14, and transmission disc 12 mesh with each other. The first transmission rod 13 is connected to the fixing block 11 and transmission disc 12 through the gears. A gear is provided at the intersection of the bottom end of the second transmission rod 15 and the transmission disc 12. The second transmission rod 15 is connected to the transmission disc 12 through the gears. The knob 3 meshes with the transmission disc 12. A bevel gear 16 is provided at the intersection of one end of the knob 3 and the second transmission rod 15. The knob 3 is connected to the second transmission rod 15 through the bevel gear 16. The top of the fixed block 11 is provided with an arc block. By rotating the knob 3, the knob 3 drives the transmission disc 12 to rotate through the second transmission rod 15. The transmission disc 12 is connected to the fixed block 11 through the first transmission rod 13. Thus, when the transmission disc 12 drives the fixed block 11 to move on the top surface of the screwdriver handle 2, it is convenient for the staff to quickly replace the screwdriver head 4 as needed and when the screwdriver head 4 is worn too much.

[0027] When the bur connection part 5 is inserted into the dental handpiece, the inserts 7 on both sides of the bur connection part 5 are engaged with the inside of the dental handpiece, which improves the stability of the connection between the bur and the dental handpiece. By rotating the knob 3, the knob 3 drives the transmission disc 12 to rotate through the second transmission rod 15. The transmission disc 12 is connected to the fixing block 11 through the first transmission rod 13. Thus, when the transmission disc 12 drives the fixing block 11 to move on the top surface of the screwdriver handle 2, it is convenient for the operator to quickly replace the screwdriver tip 4 as needed or when the screwdriver tip 4 is worn too much.

[0028] Through the above steps, when the bur connection part 5 is inserted into the dental handpiece, the inserts 7 on both sides of the bur connection part 5 snap into the inside of the dental handpiece, which improves the stability of the connection between the bur and the dental handpiece. By rotating the knob 3, the knob 3, through the second transmission rod 15, in conjunction with the transmission disc 12 and the first transmission rod 13, drives the fixing block 11 to move on the top surface of the screwdriver handle 2. This allows the operator to quickly replace the screwdriver tip 4 as needed or when the screwdriver tip 4 is worn too much. This solves the problems of low stability and slippage when the existing bur is connected to the dental handpiece, and the fact that most screwdrivers are one-piece structures, requiring the entire screwdriver to be replaced when the tip is worn, resulting in low applicability.

Claims

1. A needle for removing the cover screw, including the needle shank (1); characterized in that: The needle bar (1) has a needle working end (6) at the top and a needle connecting part (5) at the bottom. Both sides of the needle connecting part (5) are provided with inserts (7).

2. The needle according to claim 1, characterized in that: The needle bar (1) and the needle working end (6) are an integral structure. The outer side of the needle working end (6) is marked with scale. The needle working end (6) is a spiral cutting blade that surrounds the head of the working end. The spiral angle is 30°-45°. The cutting edge is made of sharp carbide material. The cutting edge width is 0.1-0.3 mm and the pitch is 0.5-1 mm.

3. The needle according to claim 1, characterized in that: The rear end of the insert (7) is provided with a movable groove (8) inside the needle connection part (5). The inner wall of the movable groove (8) is provided with a connecting spring (9). The insert (7) is movably connected to the needle connection part (5) through the connecting spring (9).

4. A screwdriver covering the screw is removed, and a screwdriver handle (2) is also included; characterized in that: The top of the screwdriver handle (2) is provided with a screwdriver head (4). Below the screwdriver head (4) is a mounting groove (10) located inside the screwdriver handle (2). The bottom end of the screwdriver head (4) extends to the inside of the mounting groove (10). The outside of the screwdriver head (4) is provided with a fixing block (11) located at the top of the screwdriver handle (2). Below the fixing block (11) is a transmission disc (12) located inside the screwdriver handle (2). The inside of the transmission disc (12) is provided with a first transmission rod (13). The top end of the first transmission rod (13) extends to one side of the fixing block (11). The front end of the screwdriver handle (2) is provided with a knob (3). One end of the knob (3) is located inside the screwdriver handle (2) and is provided with a second transmission rod (15). The bottom end of the second transmission rod (15) extends to the outside of the transmission disc (12).

5. The screwdriver according to claim 4, characterized in that: The screwdriver handle (2) has an anti-slip texture on the outside, and there are three fixing blocks (11). The number of the first transmission rod (13) is the same as that of the fixing blocks (11), and the top of the fixing block (11) has an arc block.

6. The screwdriver according to claim 4, characterized in that: The first transmission rod (13) is equipped with gears at both the upper and lower ends. A toothed block (14) is provided on one side of the top of the first transmission rod (13) on the outer end face of the fixed block (11). The gear meshes with the toothed block (14) and the transmission disc (12). The first transmission rod (13) is connected to the fixed block (11) and the transmission disc (12) through the gear.

7. The screwdriver according to claim 4, characterized in that: The bottom end of the second transmission rod (15) is provided with a gear at the intersection with the transmission disc (12). The second transmission rod (15) meshes with the transmission disc (12) through the gear. One end of the knob (3) is provided with a bevel gear (16) at the intersection with the second transmission rod (15). The knob (3) is connected to the second transmission rod (15) through the bevel gear (16).

Images