A spirally controllable bone tap and its use method

Abstract

The present invention discloses a spiral-controllable bone tap and a method of using the same, comprising a drill bit assembly, an adapter assembly and a handle assembly; the drill bit assembly comprises a drill bit and a drill bit connecting component, the drill bit connecting component is fixed to one end of the drill bit, and the drill bit connecting component is provided with a first thread groove and a first thread on the inner wall; the adapter assembly comprises a transfer tube and a blocking member, the blocking member is arranged at the top of the transfer tube, and the transfer tube is provided with a second thread; the handle assembly comprises a T-shaped handle, a bottom connecting rod is provided with a second thread groove, and the connecting rod is also provided with a rotating member; the invention can adjust the length of the drill bit to cope with different surgical environments, greatly enhancing the practicality of the device; during the operation, the drill bit can be rotated by rotating the handle, which is simple and labor-saving to operate, saving surgical time; after the operation, the drill bit can be stored in the adapter tube to keep it clean, thereby extending the service life of the tap.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a spirally controllable bone tap and a use method thereof. Background Art

[0002] A tap is a tool used to process internal threads, also known as a dental tap. A bone tap is a medical device specifically used in orthopedic surgery. It is mainly used to process internal threads in human bones to implant specific medical devices. The material of a bone tap is usually made of high-strength stainless steel to ensure its durability and corrosion resistance. Its structure mainly includes a drill bit, a threaded area and a handle.

[0003] Currently, bone taps come in a variety of sizes and specifications, such as diameter, length, and thread type, depending on the surgical procedure. Before surgery, surgeons must select the appropriate tap based on the patient's specific needs. During use, the surgeon first uses a drill bit to create a hole in the bone, then inserts the tap into the hole and rotates the handle to create the internal thread. Once completed, the surgeon can insert an implant with the same thread type into the hole to fix the fracture or perform other orthopedic procedures.

[0004] During a surgery, many taps of different sizes and specifications are usually used, which makes the pre-operative preparation work cumbersome. In addition, the thread lengths of taps of different sizes are also different. In some special surgical environments, taps of different lengths are required for surgery. However, current taps are usually fixed models and cannot be adjusted according to actual surgical needs. As a result, different taps need to be frequently replaced during the surgery, which not only increases the workload of medical staff, but also affects the quality of the surgery to a certain extent. Summary of the Invention

[0005] The object of the present invention is to provide a spirally controllable bone tap and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a spirally controllable bone tap, comprising a drill assembly, an adapter assembly and a handle assembly;

[0007] The drill bit assembly is screwed into the adapter assembly from the bottom thereof, and the handle assembly is inserted into the adapter assembly from the top thereof;

[0008] The drill bit assembly includes a drill bit and a drill bit connecting component, wherein the drill bit connecting component is fixed to one end of the drill bit, and a thread groove is provided on the outer wall of the drill bit connecting component, and a thread is provided on the inner wall;

[0009] The adapter assembly includes an adapter tube and a blocking member. The blocking member is provided at the top of the adapter tube and locks the handle assembly inside the adapter assembly. A second thread is provided on the inner wall of the adapter tube.

[0010] The handle assembly includes a T-shaped handle, and a second thread groove is provided on the outer wall of the bottom connecting rod of the T-shaped handle. A rotating member that cooperates with the blocking member is also provided at the connection between the connecting rod and the handle.

[0011] Preferably, the blocking member is welded to the outside of the top of the transfer tube and includes a sleeve tube, a top center portion of the sleeve tube is provided with an opening, a locking ring is provided in the opening, and a sliding groove is provided at the bottom of the locking ring.

[0012] Preferably, a second sliding groove is opened at the top of the transfer tube, the second sliding groove has the same depth and width as the first sliding groove, and the positions correspond in the vertical plane, and the diameter of the opening should be at least larger than the inner diameter of the transfer tube.

[0013] Preferably, the rotating member includes two symmetrically arranged rotating shafts, the two rotating shafts are movably sleeved on the outer surface of the fixed shaft, and an accommodating groove is opened on the plane of one end of the rotating shaft, and a plurality of balls are installed in the accommodating groove.

[0014] Preferably, the fixed shaft is fixed to the outer surface of the connecting rod, the receiving grooves on the two rotating shafts face opposite directions, the upper receiving groove corresponds to the sliding groove one, the lower receiving groove corresponds to the sliding groove two, and the sum of the depth of the upper receiving groove and the depth of the sliding groove one and the sum of the depth of the lower receiving groove and the depth of the sliding groove two should not exceed the diameter of the ball.

[0015] Preferably, the diameter of the opening should be at least smaller than the diameter of the rotating shaft, and the inner diameter of the sleeve should be at least larger than the diameter of the rotating shaft.

[0016] Preferably, the second thread is rotatably connected to the first thread groove, the first thread is rotatably connected to the second thread groove, the spiral direction of the second thread and the first thread groove is the same as the spiral direction of the first thread and the second thread groove, the cross-sectional diameter of the connecting rod should not exceed the inner diameter of the tube of the drill bit connecting component, and the outer diameter of the tube of the drill bit connecting component should not exceed the inner diameter of the tube of the transfer tube.

[0017] Preferably, anti-slip grooves are provided on both sides of the outer surface of the T-shaped handle and the outer surface of the transfer tube, the anti-slip grooves on both sides of the outer surface of the T-shaped handle are symmetrically arranged, and connecting blocks are also provided at both ends of the T-shaped handle.

[0018] Preferably, the length of the connecting rod and the length of the drill bit connecting component do not exceed the length of the transfer tube, and the length of the drill bit connecting component should be at least greater than the length of the connecting rod.

[0019] A method for using a spirally controllable bone tap comprises the following steps:

[0020] S1. Screw the drill bit assembly into the adapter tube from the bottom thereof, while holding the T-handle and rotating it until the second thread groove on the outer surface of the connecting rod matches the first thread groove inside the drill bit connecting component;

[0021] S2. Rotate the T-handle to check whether its rotation direction matches the extension and retraction direction of the drill bit.

[0022] S3. Hold the T-handle and rotate it to adjust the drill bit to the required length;

[0023] S4. Align the drill bit with the area to be drilled, hold the adapter and rotate the T-handle to drive the drill bit to drill the hole.

[0024] S5. After drilling, disinfect and clean the drill bit, then rotate the T-handle to put the drill bit into the adapter tube to complete storage.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The length of the drill bit can be adjusted according to actual conditions to cope with different surgical environments, greatly enhancing the practicality of the device;

[0027] 2. During the operation, the drill bit can be rotated by rotating the handle, which is simple and labor-saving, saving operation time;

[0028] 3. After the operation, the drill bit can be stored in the adapter tube to keep it clean and extend the service life of the tap. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a spirally controllable bone tap and its use method of the present invention;

[0030] Figure 2 This is a schematic diagram of the disassembled structure of a spirally controllable bone tap and its use method of the present invention;

[0031] Figure 3 This is a schematic structural diagram of a handle assembly of a spirally controllable bone tap and a method of using the same according to the present invention;

[0032] Figure 4 The present invention is a spiral controllable bone tap and its use method Figure 3 Schematic diagram of the structure of part A Figure 1;

[0033] Figure 5 The present invention is a spiral controllable bone tap and its use method Figure 3 Schematic diagram of the structure of part A Figure 2 ;

[0034] Figure 6 A schematic diagram of a transfer tube structure of a spirally controllable bone tap and a method of using the same according to the present invention;

[0035] Figure 7 The present invention is a spiral controllable bone tap and its use method Figure 6 Schematic diagram of the structure of part B;

[0036] Figure 8 A cross-sectional view of a drill bit connection component of a spirally controllable bone tap and a method of using the same according to the present invention;

[0037] Figure 9 The present invention provides a flowchart of a method for using a spirally controllable bone tap and a method for using the same.

[0038] In the figure: 1. Drill bit; 2. Drill bit connecting part; 201. Thread groove 1; 202. Thread 1; 3. Adapter tube; 301. Thread 2; 302. Sliding groove 2; 4. Blocking piece; 401. Socket tube; 402. Opening; 403. Locking ring; 404. Sliding groove 1; 5. T-handle; 501. Connecting rod; 502. Thread groove 2; 6. Rotating part; 601. Rotating shaft; 602. Fixed shaft; 603. Receiving groove; 604. Ball bearing; 7. Anti-slip groove; 8. Connecting block. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0040] See also Figure 1-8 As shown, a spiral controllable bone tap includes a drill assembly, an adapter assembly and a handle assembly;

[0041] Specifically, the drill bit assembly is screwed into the adapter assembly from the bottom thereof, and the handle assembly is inserted into the adapter assembly from the top thereof;

[0042] Specifically, the drill bit assembly includes a drill bit 1 and a drill bit connecting component 2. The drill bit connecting component 2 is fixed to one end of the drill bit 1, and a thread groove 201 is provided on the outer wall of the drill bit connecting component 2, and a thread 202 is provided on the inner wall.

[0043] Specifically, the adapter assembly includes an adapter tube 3 and a blocking member 4. The blocking member 4 is provided at the top of the adapter tube 3 and locks the handle assembly inside the adapter assembly. A second thread 301 is provided on the inner wall of the adapter tube 3.

[0044] The blocking member 4 mainly locks the connecting rod 501 part of the handle inside the transfer tube 3, through the blocking effect between the blocking member 4 and the rotating member 6, and the thread 2 301 on the inside of the transfer tube 3 engages and rotates with the thread groove 1 201 on the drill bit connecting component 2. Usually, in order to ensure the stability of the connection, the drill bit 1 and the drill bit connecting component 2 are connected by welding. During the drilling process, the impact force is large, and the drill bit 1 bears a large force and is easy to fall off from the drill bit connecting component 2. Therefore, they are welded together. At the same time, in the specific implementation process, it can be set as a detachable drill bit assembly. By replacing drill bits of different models, the practicality is enhanced and the multi-environment use of the device can be realized.

[0045] Specifically, the handle assembly includes a T-shaped handle 5 , a bottom connecting rod 501 of the T-shaped handle 5 is provided with a second thread groove 502 on its outer wall, and a rotating member 6 cooperating with the blocking member 4 is further provided at the connection between the connecting rod 501 and the handle 5 .

[0046] During actual operation, the drill bit assembly is first screwed in from the bottom of the adapter assembly. Due to the meshing connection between the threads, the drill bit assembly is rotated and fixed in the adapter tube 3. At this time, the handle assembly inserted at the top of the adapter assembly is held and rotated to screw the connecting rod 501 into the drill bit connecting component 2, so that the two threads are meshed, so that the rotation of the T-shaped handle 5 can drive the drill bit assembly to extend and retract, thereby realizing the spiral controllable of the entire tap.

[0047] Specifically, the blocking member 4 is welded to the top outer side of the transfer tube 3 and includes a sleeve tube 401. The top center portion of the sleeve tube 401 is provided with an opening 402, a locking ring 403 is provided in the opening 402, and a sliding groove 404 is provided at the bottom of the locking ring 403.

[0048] During the specific implementation process, the blocking member 4 is welded to the outside of the transfer tube 3 and is fixedly connected to the transfer tube 3. The blocking member 4 not only limits the rotating member 6, but also cooperates with the transfer tube 3 to form a space for the rotating member 6 to rotate. The sliding groove 1 404 on the blocking member 4 cooperates with the sliding groove 2 302 on the transfer tube 3. After the rotating member 6 is installed therein, the ball 604 rolls in the sliding groove, so that the rotating member 6 can rotate freely between the blocking member 4 and the transfer tube 3.

[0049] Specifically, a second sliding groove 302 is opened on the top of the transfer tube 3. The second sliding groove 302 and the first sliding groove 404 have the same depth and width, and their positions correspond in the vertical plane. The diameter of the opening 402 should be at least larger than the inner diameter of the transfer tube 3.

[0050] During the rotation of the rotating part 6, the size of the opening 402 should at least be sufficient for the connecting rod 501 to pass through to avoid collision during the rotation. The internal space of the blocking part 4 should also at least be able to accommodate the overall size of the rotating part 6. Too tight fit can easily cause wear during long-term rotation, resulting in thinning of the outer wall, reducing the service life of the rotating part 6, and thus causing the entire handle assembly to need repair and replacement, which is costly. Therefore, when the rotating part 6 rotates inside the blocking part 4, it should not touch the inner wall of the blocking part 4. A certain distance is also required between the sliding groove and the receiving groove 603. In this way, during the rotation process, the rotating shaft 601 is mainly rotated by the rolling of the ball 604. During the long-term rotation process, the wear is mainly between the ball 604 and the sliding groove and the receiving groove 603, which can extend the service life of the handle to a certain extent.

[0051] Specifically, the rotating member 6 includes two symmetrically arranged rotating shafts 601, which are movably sleeved on the outer surface of the fixed shaft 602. A receiving groove 603 is opened on the plane of one end of the rotating shaft 601, and a plurality of balls 604 are installed in the receiving groove 603.

[0052] In the present invention, the length of the blocking member 4 extending on the transfer tube 3 should be slightly longer than the overall length of the rotating member 6, so as to accommodate the ball 604 to roll in the accommodating groove 603, and the rotating shaft 601 in the rotating member 6 adopts a two-section symmetrical arrangement, and both are connected to the fixed shaft 602, and both can rotate on the fixed shaft 602, and both rotate independently. When the handle is rotated, the upper and lower ends of the rotating member 6 can rotate independently, so that the upper and lower ends are subjected to different forces, avoiding the generation of useless force, extending the service life of the device, and making the rotating member 6 subject to targeted force in any rotation direction of the handle to ensure that the rotating member 6 will not be damaged at the same time.

[0053] Specifically, the fixed shaft 602 is fixed to the outer surface of the connecting rod 501, and the receiving grooves 603 on the two rotating shafts 601 face opposite directions. The upper receiving groove 603 corresponds to the sliding groove 1 404, and the lower receiving groove 603 corresponds to the sliding groove 2 302. The sum of the depth of the upper receiving groove 603 and the depth of the sliding groove 1 404 and the sum of the depth of the lower receiving groove 603 and the depth of the sliding groove 2 302 should not exceed the diameter of the ball 604.

[0054] Specifically, the diameter of the opening 402 should be at least smaller than the diameter of the rotating shaft 601 , and the inner diameter of the sleeve 401 should be at least larger than the diameter of the rotating shaft 601 .

[0055] In the present invention, the ball 604 can roll in the receiving groove 603 and the sliding groove, so that the rotating shaft 601 in the rotating member 6 can rotate within a certain plane. The depth of the sliding groove and the receiving groove 603 must at least ensure that when the ball 604 moves therein, its two ends can contact the receiving groove 603 and the sliding groove at the same time, so that the rotating shaft 601 can rotate.

[0056] Specifically, thread 2 301 is rotationally connected to thread groove 1 201, thread 1 202 is rotationally connected to thread groove 2 502, the spiral direction of thread 2 301 and thread groove 1 201 is the same as the spiral direction of thread 1 202 and thread groove 2 502, the cross-sectional diameter of the connecting rod 501 should not exceed the inner diameter of the drill bit connecting component 2, and the outer diameter of the drill bit connecting component 2 should not exceed the inner diameter of the transfer tube 3.

[0057] In the present invention, the controllability of the drill bit thread length is achieved by directly cooperating with multiple threads and thread grooves, and the device can be used in multiple ways. The spiral directions of the two sets of threads and the thread grooves are consistent, ensuring that the drill bit 1 can be smoothly rotated and extended, and the drill bit connecting component 2 is spirally engaged inside and outside, which not only makes the extension and retraction of the drill bit 1 more controllable, but also ensures the stability of the extension process, and is more stable during the drilling process. In order to ensure that the connection between the connecting rod 501 and the inside of the drill bit connecting component 2 is sufficiently stable, the rod diameter of the connecting rod 501 must be smaller than the inner diameter of the tube of the drill bit connecting component 2.

[0058] Specifically, anti-slip grooves 7 are provided on both sides of the outer surface of the T-shaped handle 5 and the outer surface of the transfer tube 3. The anti-slip grooves 7 on both sides of the outer surface of the T-shaped handle 5 are symmetrically arranged, and connecting blocks 8 are also provided at both ends of the T-shaped handle 5.

[0059] In view of the various usage methods of the device, anti-slip grooves 7 are also provided at corresponding positions. When the handle 5 is rotated by hand, it is necessary to touch both sides of the handle 5. Therefore, anti-slip grooves are provided on both sides to increase friction and make the drilling process more labor-saving. When drilling with the handle 5, it is necessary to hold the outside of the transfer tube 3 for overall stability. Therefore, anti-slip grooves 7 are required on the outside of the transfer tube 3.

[0060] The connecting blocks 8 provided at both ends of the handle 5 are mainly used to provide an external drive device for the tap. The handle 5 is rotated by connecting the connecting blocks 8 at both ends of the handle 5. In certain specific surgical procedures, the drilling process is difficult to complete by manpower alone, so an electric drive is required to guide the handle 5 to rotate, thereby driving the drill bit 1 to drill or guide the screw nail. In the present invention, the connecting blocks 8 are provided at both ends of the T-shaped handle 5, which is different from the ordinary tap connecting block being provided at one end. In this embodiment, the external drive device can connect two connecting blocks 8 at the same time, and the two connecting blocks 8 are symmetrically arranged. Therefore, during the driving process, the stability of the entire tap can be maintained. The current tap is prone to unstable drilling effects when the external drive is installed, affecting the quality of the surgery.

[0061] Specifically, the length of the connecting rod 501 and the length of the drill bit connecting component 2 do not exceed the length of the transfer tube 3 , and the length of the drill bit connecting component 2 should be at least greater than the length of the connecting rod 501 .

[0062] In this embodiment, the length of the connecting rod 501 should not exceed the length of the transfer tube 3, otherwise the connecting rod 501 part of the handle 5 cannot be fully inserted into the transfer tube 3, resulting in the inability to fix the handle 5, making the overall device less practical, and the length of the drill bit connecting component 2 should not exceed the length of the transfer tube 3, otherwise the overall length of the drill bit 1 and the drill bit connecting component 2 will be too long, the setting will be unreasonable, and the drill bit 1 cannot be received into the transfer tube 3, wherein the length of the drill bit connecting component 2 should at least be longer than the connecting rod 501, otherwise when the connecting rod 501 is rotated, the drill bit connecting component 2 will expand and contract as the connecting rod 501 rotates. When it contracts to a certain extent, the space inside the drill bit connecting component 2 is smaller than the connecting rod 501, and the connecting rod 501 will squeeze the drill bit 1. Over time, the connection between the drill bit 1 and the drill bit connecting component 2 will be damaged, and even cracks will appear.

[0063] A method for using a spirally controllable bone tap comprises the following steps:

[0064] S1. Screw the drill bit assembly into the adapter tube 3 from the bottom thereof, while holding the T-handle 5 and rotating it until the second thread groove 502 on the outer surface of the connecting rod 501 matches the first thread 202 inside the drill bit connecting component 2;

[0065] S2, rotating the T-shaped handle 5 to check whether its rotation direction matches the extension and retraction direction of the drill bit 1;

[0066] S3. Grip the T-handle 5 and rotate it to adjust the drill bit 1 to the required length.

[0067] S4. Align the drill bit 1 with the area to be drilled, hold the adapter tube 3 and rotate the T-handle 5 to drive the drill bit 1 to rotate and drill;

[0068] S5. After the drilling is completed, the drill bit 1 is disinfected and cleaned, and then the T-shaped handle 5 is rotated to put the drill bit 1 into the adapter tube 3 to complete the storage.

[0069] The bone tap in this embodiment is usually made of high-strength metal materials such as stainless steel to withstand high pressure and load during surgery. It also has high corrosion resistance, ensuring that it can be used in the body for a long time without damage.

[0070] Bone taps typically come in different sizes and shapes to accommodate fractures of varying locations and types. Surgeons typically select the appropriate tap based on the patient's specific condition. During surgery, they utilize a surgical navigation system or X-rays to ensure accurate positioning of the tap. This embodiment allows for varying drill length and usage methods on the same model of tap, facilitating adjustments to accommodate changing surgical environments. The change in drill thread length primarily addresses drilling depths of varying depths, preventing damage to surrounding tissue or bone and providing a better surgical approach.

[0071] At present, the common models of bone taps are: GA2010, GA2020, GA2030, GA2040, GA2050, GA2060; all of them are T-shaped taps, corresponding to HA2, HA2.7, HA3.5, HA4.5, HB4, HB6.5 respectively;

[0072] It is worth mentioning that in this invention, the overall tap model can be changed by replacing drill bits of different models. The drill bit 1 and the drill bit connecting component 2 can be set to a detachable connection. The replacement function of the drill bit 1 is used to enhance the practicality of the device. After the operation, it can be disassembled and cleaned, and disinfected and cleaned in all directions without dead angles, which is convenient for daily care and maintenance of the tap.

[0073] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A bone tap with controllable spiral, characterized by: Including a drill bit assembly, an adapter assembly and a handle assembly; The drill bit assembly is screwed into the adapter assembly from the bottom thereof, and the handle assembly is inserted into the adapter assembly from the top thereof; The drill bit assembly comprises a drill bit (1) and a drill bit connecting component (2), wherein the drill bit connecting component (2) is fixed to one end of the drill bit (1), and a thread groove (201) is provided on the outer wall of the drill bit connecting component (2), and a thread (202) is provided on the inner wall. The adapter assembly comprises an adapter tube (3) and a blocking member (4), wherein the blocking member (4) is provided at the top of the adapter tube (3) and locks the handle assembly inside the adapter assembly, and a second thread (301) matching the first thread groove (201) is provided on the inner wall of the adapter tube (3); The blocking member (4) is welded to the outside of the top of the transfer tube (3) and comprises a sleeve tube (401). The top center portion of the sleeve tube (401) is provided with an opening (402). A locking ring (403) is provided in the opening (402). The bottom of the locking ring (403) is provided with a sliding groove (404). A second sliding groove (302) is provided on the top of the transfer tube (3). The second sliding groove (302) and the first sliding groove (404) have the same depth and width, and their positions correspond to each other in a vertical plane. The diameter of the opening (402) should be at least larger than the inner diameter of the transfer tube (3). The handle assembly comprises a T-shaped handle (5), a second thread groove (502) is provided on the outer wall of a bottom connecting rod (501) of the T-shaped handle (5), and a rotating member (6) cooperating with the blocking member (4) is further provided at the connection between the connecting rod (501) and the handle (5); The rotating member (6) comprises two symmetrically arranged rotating shafts (601), the two rotating shafts (601) being movably sleeved on the outer surface of the fixed shaft (602), a receiving groove (603) being provided on a plane at one end of the rotating shaft (601), and a plurality of balls (604) being installed in the receiving groove (603); The fixed shaft (602) is fixed to the outer surface of the connecting rod (501), and the receiving grooves (603) on the two rotating shafts (601) face opposite directions, the upper receiving groove (603) corresponds to the sliding groove 1 (404), and the lower receiving groove (603) corresponds to the sliding groove 2 (302), and the sum of the depth of the upper receiving groove (603) and the depth of the sliding groove 1 (404) and the sum of the depth of the lower receiving groove (603) and the depth of the sliding groove 2 (302) should not exceed the diameter of the ball (604); That is, when the rotating member (6) rotates in the blocking member (4), the second thread groove (502) matches the first thread groove (202) to drive the drill bit connecting member (2) and the drill bit (1) to rotate synchronously, and the second thread groove (301) matches the first thread groove (201), thereby guiding the drill bit connecting member (2) and the drill bit (1) to move and rotate along the axial direction thereof in the transfer tube (3).

2. The spiral-controllable bone tap according to claim 1, characterized in that: The diameter of the opening (402) should be at least smaller than the diameter of the rotating shaft (601), and the inner diameter of the sleeve (401) should be at least larger than the diameter of the rotating shaft (601).

3. The spiral-controllable bone tap according to claim 1, characterized in that: The second thread (301) is rotatably connected to the first thread groove (201), and the first thread groove (202) is rotatably connected to the second thread groove (502). The spiral direction of the second thread (301) and the first thread groove (201) is the same as the spiral direction of the first thread groove (202) and the second thread groove (502). The cross-sectional diameter of the connecting rod (501) should not exceed the inner diameter of the tube of the drill bit connecting component (2), and the outer diameter of the tube of the drill bit connecting component (2) should not exceed the inner diameter of the tube of the transfer tube (3).

4. The spiral-controllable bone tap according to claim 3, characterized in that: Anti-slip grooves (7) are provided on both sides of the outer surface of the T-shaped handle (5) and the outer surface of the transfer tube (3). The anti-slip grooves (7) on both sides of the outer surface of the T-shaped handle (5) are symmetrically arranged. Connecting blocks (8) are also provided at both ends of the T-shaped handle (5).

5. The spiral-controllable bone tap according to claim 1, characterized in that: The length of the connecting rod (501) and the length of the drill bit connecting component (2) do not exceed the length of the transfer tube (3), and the length of the drill bit connecting component (2) should be at least greater than the length of the connecting rod (501).

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