A surgical drilling device

Abstract

This invention discloses a surgical drilling device, relating to the field of surgical drilling technology. It includes a drilling handpiece with a drilling section for drilling into bone. The handpiece is equipped with a ulceration limiting component to prevent excessive downward pressure. A lifting adapter is mounted on the drilling section, and a propulsion component is mounted on the lifting adapter to limit the drilling depth. By using the propulsion component in conjunction with the lifting adapter, the timing of the elastic retraction of the ulceration limiting component can be controlled. This ensures the surgeon has sufficient downward pressure during the initial bone drilling, guaranteeing drilling efficiency. This addresses the problems of current surgical drilling devices, such as the inconvenience of automatically reducing drilling pressure when approaching bone penetration and the difficulty in preventing damage to the medullary cavity during flushing.

Description

Technical Field

[0001] This invention relates to the field of surgical drilling technology, specifically to a surgical drilling device. Background Technology

[0002] In actual surgical procedures, such as tibial drilling and drainage, drilling is required, and the quality of the drilling is particularly important. The lesion needs to be removed through the bone drill. In actual drilling, it is necessary to avoid expanding the damage to the tissue. Current surgical drilling devices are not easy to control to prevent excessive drilling pressure, which can easily cause damage to the drill edge when breaking through the bone and can also easily damage the muscles. However, if the pressure is too low, it will affect the drilling efficiency. It is not easy to automatically control the drilling pressure to reduce the drilling pressure when approaching the bone penetration. At the same time, it is not easy to prevent damage to the medullary cavity during flushing. In order to ensure the flushing effect, water pressure is usually required. However, after drilling through the medullary cavity, water flushing is usually used for safe cleaning. If the water pressure in the medullary cavity is too high, it can easily cause damage to the intramedullary venous network.

[0003] Therefore, we propose a drilling device for surgery. Summary of the Invention

[0004] The purpose of this invention is to provide a surgical drilling device to solve the problems mentioned in the background art, namely, that current surgical drilling devices are not convenient for automatically controlling the reduction of drilling pressure when approaching the bone, and are not convenient for preventing the bone marrow cavity from being damaged by flushing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a surgical drilling device, comprising a drilling handpiece, a drilling portion mounted on the drilling handpiece for drilling into bone; a ulceration limiting member mounted on the drilling handpiece to prevent excessive downward pressure; a lifting adapter mounted on the drilling portion; a pushing member mounted on the lifting adapter to limit the drilling depth; a rotating sleeve mounted on the drilling portion for pressurized flushing; the drilling handpiece comprising a handle and a drive motor, the drive motor being fixedly mounted on the handle; the output shaft of the drive motor passing through the handle; and the handle for handheld use.

[0006] Preferably, the drilling handpiece further includes: a sliding sleeve, which is fixedly mounted on the output shaft of the drive motor; a sliding groove is provided on the inner side of the sliding sleeve; and a sliding strip is provided on the outer side of the sliding sleeve.

[0007] Preferably, the drilling section includes: a drilling column, a return spring, and a drill bit; the drilling column is slidably sleeved on a sliding sleeve; the drilling column has a raised strip on its side; the raised strip on the side of the drilling column is slidably inserted into a groove on the inner side of the sliding sleeve; a groove is formed on the side of the drilling column; a return spring is fixedly installed on the top of the drilling column, and the return spring is located inside the sliding sleeve; the end of the return spring is connected to the inner side of the sliding sleeve; and a drill bit is fixedly installed on the end of the drilling column.

[0008] Preferably, the drilling part further includes: a water passage hole, a side hole, and a limiting ring. The water passage hole is formed on the drill bit. The drill bit has two side holes, which are respectively connected to the water passage hole. The side holes are located in the drain groove of the drill bit. The limiting ring is fixedly installed on the drill bit and is located below the upper end of the water passage hole.

[0009] Preferably, the collapsible limiting component includes: a collapsible shaft, a tension spring, and a contact piece; the collapsible shaft is slidably inserted into a sliding sleeve; the end of the collapsible shaft has a hemispherical structure; the end of the collapsible shaft is inserted into a groove on the side of the drill string; the insertion length of the end of the collapsible shaft on the drill string is less than the radius of the hemispherical structure at the end of the collapsible shaft; a tension spring is sleeved on the collapsible shaft; the tension spring is connected between the collapsible shaft and the sliding sleeve; and a contact piece is fixedly installed at the tail of the collapsible shaft.

[0010] Preferably, the lifting adapter includes: a lifting sleeve, a threaded connecting frame, an upward spring, and a stop contact plate. The lifting sleeve is slidably fitted onto a sliding sleeve. The lifting sleeve has a groove for a slide bar that slides on the outer side of the sliding sleeve. A threaded connecting frame, consisting of a ring and a threaded cylinder, is rotatably fitted onto the lifting sleeve. An upward spring is fixedly installed on the lifting sleeve and is fitted onto the sliding sleeve. The top of the upward spring is fixedly connected to the sliding sleeve. A stop contact plate is fixedly installed on the side of the lifting sleeve. The side of the stop contact plate is attached to a contact piece. The contact piece is used to stop the collapsible shaft. The stop contact plate can pass between the threaded cylinder on the threaded connecting frame and the lifting sleeve.

[0011] Preferably, the propulsion component includes: a retaining ring and a threaded post, the retaining ring being sleeved on the drill bit; the threaded post being rotatably mounted on the retaining ring; the end of the threaded post being threaded; and the threaded post being threadedly connected to a threaded connecting frame.

[0012] Preferably, the retaining ring is used to slide on the drill bit; the bottom of the threaded post is provided with a hexagonal hole; the retaining ring does not obstruct the drain groove on the drill bit.

[0013] Preferably, the rotary sleeve includes: a pressure sleeve and a water supply pipe, wherein the pressure sleeve is sleeved on the drill bit; the pressure sleeve is located between the limiting ring and the drill string; the pressure sleeve is aligned with the upper end of the water passage hole; a water supply pipe is fixedly installed on the pressure sleeve; the water supply pipe communicates with the interior of the pressure sleeve; a hand-held ring is provided on the water supply pipe; the hand-held ring on the water supply pipe is used for holding; and the pressure sleeve communicates with the water passage hole.

[0014] Preferably, the rotary sleeve further includes: a connecting pipe and a solenoid valve, wherein the connecting pipe is fixedly installed on the water supply pipe; a water pump is connected to the outside of the connecting pipe; a solenoid valve is fixedly installed on the connecting pipe; and the solenoid valve, the stop contact plate, and the contact plate are connected in series with a battery power supply.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention employs a cavitation limiting component that works in conjunction with the drilling section to prevent excessive pressure during drilling, which could damage the bone. It also avoids tissue damage after drilling through the bone due to insufficient force release, thus improving safety. The invention utilizes a propulsion component with a lifting adapter to control the timing of the cavitation limiting component's elastic retraction. During the initial bone drilling, this ensures the surgeon has sufficient downward pressure, guaranteeing drilling efficiency and preventing prolonged drilling, thereby increasing surgical speed. Furthermore, when approaching the bone thickness, the cavitation limiting component automatically retracts elastically, ensuring safety as drilling nears completion and preventing bone fragmentation. The structure is more rational and better suited to actual surgical procedures.

[0017] The rotary sleeve can be used to assist in water supply for flushing and cooling. It also allows for more direct water supply, enabling drainage directly at the bottom of the hole for better cleaning. Furthermore, this structure can be used with lifting adapters to automatically stop water pressure when the hole is close to the drilling point, preventing water pressure damage to the medullary cavity. It can also be used to protect the intramedullary venous network when drilling is about to complete. This structure can achieve automatic control, avoiding human error. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a surgical drilling device according to the present invention;

[0019] Figure 2 This is a cross-sectional view of the internal structure of a surgical drilling device according to the present invention;

[0020] Figure 3 This is a schematic diagram of the sliding sleeve structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the drilling handpiece structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the drilling section structure of the present invention;

[0023] Figure 6 For the present invention Figure 2 Enlarged view of the structure of region B in the middle;

[0024] Figure 7 This is a schematic diagram of the lifting adapter structure of the present invention;

[0025] Figure 8 For the present invention Figure 3 Enlarged view of the structure of region D in the middle;

[0026] Figure 9 This is a schematic diagram of the propulsion component structure of the present invention;

[0027] Figure 10 This is a schematic diagram of the rotary sleeve structure of the present invention;

[0028] Figure 11 For the present invention Figure 2 Enlarged view of the structure of the F region.

[0029] In the diagram: 1. Drilling handheld component; 101. Handle; 102. Drive motor; 103. Sliding sleeve; 2. Drilling section; 201. Drilling post; 202. Retraction spring; 203. Drill bit; 2031. Water passage hole; 2032. Side hole; 2033. Limiting ring; 3. Collapse limiting component; 301. Collapse shaft; 302. Tension spring; 303. Contact piece; 4. Lifting adapter; 401. Lifting slide sleeve; 4011. Threaded connecting bracket; 402. Upward spring; 403. Stop contact piece; 5. Pushing component; 501. Retaining ring; 502. Threaded post; 6. Rotary sleeve; 601. Pressure sleeve; 602. Water supply pipe; 603. Connecting pipe; 604. Solenoid valve. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figures 1 to 11 As shown:

[0032] This invention provides a technical solution: a surgical drilling device, comprising a drilling handpiece 1, a drilling section 2 mounted on the drilling handpiece 1 for drilling into bone; a ulceration limiting member 3 mounted on the drilling handpiece 1 to prevent excessive downward pressure; a lifting adapter 4 mounted on the drilling section 2; a pushing member 5 mounted on the lifting adapter 4 to limit the drilling depth; a rotating sleeve 6 mounted on the drilling section 2 for pressurizing and flushing; the drilling handpiece 1 includes a handle 101 and a drive motor 102, the drive motor 102 being fixedly mounted on the handle 101; the output shaft of the drive motor 102 passing through the handle 101; the handle 101 being used for handheld operation.

[0033] The drilling handpiece 1 also includes: a sliding sleeve 103, which is fixedly mounted on the output shaft of the drive motor 102; a sliding groove is provided on the inner side of the sliding sleeve 103; and a sliding strip is provided on the outer side of the sliding sleeve 103.

[0034] The drilling section 2 includes a drilling post 201, a return spring 202, and a drill bit 203. The drilling post 201 is slidably sleeved on the sliding sleeve 103. A protruding strip is provided on the side of the drilling post 201. The protruding strip on the side of the drilling post 201 is slidably inserted into a groove on the inner side of the sliding sleeve 103. A groove is formed on the side of the drilling post 201. A return spring 202 is fixedly installed on the top of the drilling post 201, and the return spring 202 is located inside the sliding sleeve 103. The end of the return spring 202 is connected to the inside of the sliding sleeve 103. The drill bit 203 is fixedly installed at the end of the drill string 201. The drilled part 2 also includes: a water passage hole 2031, a side hole 2032, and a limiting ring 2033. The water passage hole 2031 is opened on the drill bit 203. Two side holes 2032 are opened on the drill bit 203, and the two side holes 2032 are respectively connected to the water passage hole 2031. The side holes 2032 are located in the drain groove of the drill bit 203. The limiting ring 2033 is fixedly installed on the drill bit 203, and the limiting ring 2033 is located below the upper end of the water passage hole 2031. Collapse limit Positioning element 3 includes: a collapsible shaft 301, a tension spring 302, and a contact piece 303. The collapsible shaft 301 is slidably inserted into the sliding sleeve 103; the end of the collapsible shaft 301 has a hemispherical structure; the end of the collapsible shaft 301 is inserted into a groove opened on the side of the drill string 201; the insertion length of the end of the collapsible shaft 301 on the drill string 201 is less than the radius of the hemispherical structure at the end of the collapsible shaft 301; a tension spring 302 is sleeved on the collapsible shaft 301; the tension spring 302 is connected between the collapsible shaft 301 and the sliding sleeve 103; the collapsible shaft 301... 01 The tail is fixedly installed with a contact piece 303. The collapsible limiting part 3 can be used in conjunction with the drilling part 2 to prevent excessive pressure when the hand-held drilling part 1 is pressed down to drill, which may cause damage to the bone. At the same time, it can also avoid tissue damage caused by failure to release force in time after drilling through the bone due to excessive downward pressure, thus improving the safety of use. The structure is simpler and more reasonable. By using a water passage hole 2031 in conjunction with a side hole 2032, it is easy to flow water for rinsing. The structure is more reasonable and can be used for cooling and rinsing bone fragments.

[0035] The lifting adapter 4 includes: a lifting sleeve 401, a threaded connecting bracket 4011, an upward moving spring 402, and a stop contact plate 403. The lifting sleeve 401 is slidably sleeved on the sliding sleeve 103, and the lifting sleeve 401 has a groove for a slide bar that slides on the outside of the sliding sleeve 103. The threaded connecting bracket 4011 is rotatably sleeved on the lifting sleeve 401, and the threaded connecting bracket 4011 is composed of a ring and a threaded cylinder. The upward moving spring 402 is fixedly installed on the lifting sleeve 401, and the upward moving spring 402 is sleeved on the sliding sleeve 103. The top of the upward moving spring 402 is fixedly connected to the sliding sleeve 103. The lifting sleeve 401 has a side... A stop contact plate 403 is fixedly installed on the surface; the side of the stop contact plate 403 is attached to the contact plate 303; the contact plate 303 is used to stop the collapsible shaft 301; the stop contact plate 403 can pass between the threaded cylinder on the threaded connecting frame 4011 and the lifting sliding sleeve 401; the pusher 5 includes: a retaining ring 501 and a threaded post 502, the retaining ring 501 is sleeved on the drill bit 203; the threaded post 502 is rotatably installed on the retaining ring 501; the end of the threaded post 502 is provided with threads; the threaded post 502 is threadedly connected to the threaded cylinder on the threaded connecting frame 4011; the retaining ring 501 is used to slide on the drill bit 203; the bottom of the threaded post 502 is provided with a hexagonal shape. The hole; the retaining ring 501 does not obstruct the drainage groove on the drill bit 203. Using the pusher 5 in conjunction with the lifting adapter 4, it can control the timing of the elastic retraction of the ulceration limiter 3. During the initial bone drilling, it ensures the surgeon has sufficient downward pressure, guaranteeing drilling efficiency, avoiding prolonged drilling, and increasing surgical speed. Simultaneously, when approaching the bone thickness, it automatically controls the elastic retraction of the ulceration limiter 3, ensuring safety when drilling near completion and preventing bone fragmentation. The structure is more rational and better suited to actual surgical needs. The structure is simple to operate and can be understood using surgical imaging equipment, such as an X-ray machine. The thickness of the bone is adjusted by rotating the threaded column 502, which moves the retaining ring 501. The distance between the bottom of the retaining ring 501 and the bottom of the drill bit 203 is adjusted as needed to ensure that the stop contact plate 403 no longer blocks the ulceration shaft 301 before the drill bit 203 penetrates the bone. As the drilling depth increases, the outer side of the bone will stop the retaining ring 501. The retaining ring 501 cannot enter the drill hole together, which will push the lifting sleeve 401 to move upward, so that the stop contact plate 403 no longer blocks the ulceration shaft 301. At this time, it is close to penetrating the bone. If the doctor still presses down hard, the ulceration shaft 301 will automatically retract for protection.

[0036] In Example 2, based on Example 1, the rotary sleeve 6 includes: a pressure sleeve 601 and a water supply pipe 602. The pressure sleeve 601 is sleeved on the drill bit 203; the pressure sleeve 601 is located between the limiting ring 2033 and the drill string 201; the pressure sleeve 601 is aligned with the upper end of the water passage hole 2031; the water supply pipe 602 is fixedly installed on the pressure sleeve 601; the water supply pipe 602 communicates with the interior of the pressure sleeve 601; a hand-held ring is provided on the water supply pipe 602; the hand-held ring on the water supply pipe 602 is used for holding. The pressure sleeve 601 connects to the water passage hole 2031; the rotary sleeve 6 also includes: a connecting pipe 603 and a solenoid valve 604, the connecting pipe 603 is fixedly installed on the water supply pipe 602; a water pump is connected to the connecting pipe 603; the solenoid valve 604 is fixedly installed on the connecting pipe 603; the solenoid valve 604, the stop contact plate 403, and the contact plate 303 are connected in series with a battery power supply. The rotary sleeve 6 can be used to assist in water supply for flushing and cooling, and the water supply position is more direct. Drainage at the bottom of the hole improves the cleaning effect. This structure, when used with lifting adapter 4, automatically stops water pressure when approaching the drilling penetration point, preventing water pressure damage to the medullary cavity. It can be used to protect the intramedullary venous network as drilling nears completion. This structure is automatically controlled, preventing human error and is easy to operate. When the stop contact plate 403 stops the ulceration shaft 301 (in the early drilling stage), the drilling pressure and heat generation are high. When approaching bone penetration, the stop contact plate 403 stops blocking the ulceration shaft 301 and no longer adheres to the contact plate 303. At this point, the solenoid valve 604 closes to prevent continuous water spraying. This also serves as a reminder to the operator that they are close to bone penetration and need to shut off the water pump connected to the connecting pipe 603. A syringe can be used to assist in flushing, preventing high flushing pressure from compressing and damaging the intramedullary venous network, increasing safety risks, and improving surgical protection. This structure is particularly suitable for tibial drilling and drainage procedures.

[0037] The working principle of this embodiment is as follows: First, by holding and pressing down the handle 101, the drive motor 102 drives the sliding sleeve 103 to drive the drill bit 203 to drill into the bone, thus creating a hole. When pressing down the handle 101, if the pressure is excessive, the arc-shaped structure at the end of the collapsible shaft 301 will slip out of the groove on the side of the drill string 201, and the tension spring 302 will be stretched. When the pressure is less, the tension spring 302 can pull the collapsible shaft 301 to insert into the drill string 201, ensuring normal drilling. The external connection is achieved through the connecting pipe 603. The water pump supplies saline solution, which is introduced into the pressure sleeve 601 and guided from the water inlet 2031 to the side hole 2032 for flushing. During the process, the doctor holds the hand ring on the water supply pipe 602 to help stabilize the drill bit 203. Under the compression of the upward spring 402, the lifting sleeve 401 is pressed down, driving the stop contact plate 403 to stop the collapsible shaft 301. At this time, the staff directly presses down on the drill bit 203. Even if there is upward pressure on the drill bit 203, the collapsible shaft 301 cannot retract. As the drilling depth increases with the downward pressure... The bone will stop the stop ring 501, pushing the lifting sleeve 401 upward, causing the stop contact plate 403 to no longer block the ulceration shaft 301. At this point, the drilling is close to penetrating the bone. If the doctor continues to press down too hard, the ulceration shaft 301 will automatically retract for protection. Similarly, once the drilling depth is deep and close to penetrating the bone, when the stop contact plate 403 no longer blocks the ulceration shaft 301, it will no longer be in contact with the contact piece 303. At this time, the solenoid valve 604 will close to prevent continuous water spraying and also to alert the staff. When the drill bit is close to penetrating the bone, the water pump connected to the connecting pipe 603 needs to be turned off. At this time, a syringe can be used to assist in water flushing. A threaded connecting bracket 4011 is rotatably sleeved on the lifting slide sleeve 401. When the lifting slide sleeve 401 is driven to rotate together with the drive motor 102, the threaded connecting bracket 4011 is rotatably connected to the lifting slide sleeve 401 and, together with the retaining ring 501, is sleeved on the drill bit 203. This will not interfere with the rotation of the drill bit 203. At the same time, the threaded column 502 will not rotate together, thus avoiding jamming with the rotary sleeve 6.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention 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 to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surgical drilling device, comprising a drilling handle (1), wherein a drilling part (2) is mounted on the drilling handle (1), characterized in that: The drilling part (2) is used for drilling into bone; a cavitation limiter (3) is installed on the drilling handpiece (1); the cavitation limiter (3) is used to prevent excessive downward pressure; A lifting adapter (4) is installed on the drilling section (2); a propulsion component (5) is installed on the lifting adapter (4); the propulsion component (5) is used to limit the drilling depth; A rotary sleeve (6) is installed on the drilled part (2); the rotary sleeve (6) is used for pressure flushing; The drilling handheld device (1) includes: a handle (101), a drive motor (102), and a sliding sleeve (103). The drive motor (102) is fixedly mounted on the handle (101). The output shaft of the drive motor (102) passes through the handle (101). The handle (101) is used for handheld operation. The drilling section (2) includes: a drilling column (201), a retraction spring (202), and a drill bit (203); The collapsible limiting component (3) includes: a collapsible shaft (301), a tension spring (302), and a contact piece (303). The collapsible shaft (301) is slidably inserted into the sliding sleeve (103). The end of the collapsible shaft (301) is a hemispherical structure. The end of the collapsible shaft (301) is inserted into a groove on the side of the drill column (201). The insertion length of the end of the collapsible shaft (301) on the drill column (201) is less than the radius of the hemispherical structure at the end of the collapsible shaft (301). A tension spring (302) is sleeved on the collapsible shaft (301). The tension spring (302) is connected between the collapsible shaft (301) and the sliding sleeve (103). A contact piece (303) is fixedly installed at the tail of the collapsible shaft (301). The lifting adapter (4) includes: a lifting sleeve (401), a threaded connecting bracket (4011), an upward moving spring (402), and a stop contact plate (403). The lifting sleeve (401) is slidably sleeved on the sliding sleeve (103), and the lifting sleeve (401) is provided with a groove for sliding on the outer side of the sliding sleeve (103). The threaded connecting bracket (4011) is rotatably sleeved on the lifting sleeve (401), and the threaded connecting bracket (4011) is composed of a ring and a threaded cylinder. An upper part is fixedly installed on the lifting sleeve (401). The upper spring (402) is sleeved on the sliding sleeve (103); the top of the upper spring (402) is fixedly connected to the sliding sleeve (103); a stop contact plate (403) is fixedly installed on the side of the lifting sleeve (401); the side of the stop contact plate (403) is attached to the contact plate (303); the contact plate (303) is used to stop the collapsible shaft (301); the stop contact plate (403) can pass between the threaded cylinder on the threaded connecting bracket (4011) and the lifting sleeve (401).

2. The surgical drilling device according to claim 1, characterized in that: The sliding sleeve (103) is fixedly installed on the output shaft of the drive motor (102); a sliding groove is provided on the inner side of the sliding sleeve (103); and a sliding strip is provided on the outer side of the sliding sleeve (103).

3. The surgical drilling device according to claim 2, characterized in that: The drilling column (201) is slidably sleeved on the sliding sleeve (103); the drilling column (201) has a raised strip on its side; the raised strip on the side of the drilling column (201) is slidably inserted into the groove on the inner side of the sliding sleeve (103); the drilling column (201) has a groove on its side; a retraction spring (202) is fixedly installed on the top of the drilling column (201), and the retraction spring (202) is located inside the sliding sleeve (103); the end of the retraction spring (202) is connected to the inner side of the sliding sleeve (103); a drill bit (203) is fixedly installed on the end of the drilling column (201).

4. The surgical drilling device according to claim 3, characterized in that: The drilling section (2) further includes: a water passage hole (2031), a side hole (2032), and a limiting ring (2033). The water passage hole (2031) is opened on the drill bit (203). The drill bit (203) has two side holes (2032), which are connected to the water passage hole (2031). The side holes (2032) are located in the drain groove of the drill bit (203). The limiting ring (2033) is fixedly installed on the drill bit (203), and the limiting ring (2033) is located below the upper end of the water passage hole (2031).

5. The surgical drilling device according to claim 1, characterized in that: The propulsion component (5) includes a retaining ring (501) and a threaded post (502). The retaining ring (501) is sleeved on the drill bit (203). The threaded post (502) is rotatably mounted on the retaining ring (501). The end of the threaded post (502) is provided with threads. The threaded post (502) is threadedly connected to the threaded connection frame (4011).

6. A surgical drilling device according to claim 5, characterized in that: The retaining ring (501) is used to slide on the drill bit (203); the bottom of the threaded post (502) is provided with a hexagonal hole; the retaining ring (501) does not block the drain groove on the drill bit (203).

7. A surgical drilling device according to claim 4, characterized in that: The rotary sleeve (6) includes: a pressure sleeve (601) and a water supply pipe (602). The pressure sleeve (601) is sleeved on the drill bit (203). The pressure sleeve (601) is located between the limiting ring (2033) and the drilling column (201). The pressure sleeve (601) is aligned with the upper end of the water passage hole (2031). The water supply pipe (602) is fixedly installed on the pressure sleeve (601). The water supply pipe (602) is connected to the inside of the pressure sleeve (601). The water supply pipe (602) is provided with a hand ring. The hand ring on the water supply pipe (602) is used for hand gripping. The pressure sleeve (601) is connected to the water passage hole (2031).

8. A surgical drilling device according to claim 7, characterized in that: The rotary sleeve (6) further includes: a connecting pipe (603) and a solenoid valve (604). The connecting pipe (603) is fixedly installed on the water supply pipe (602). A water pump is connected to the outside of the connecting pipe (603). The solenoid valve (604) is fixedly installed on the connecting pipe (603). The solenoid valve (604), the stop contact plate (403), and the contact plate (303) are connected in series with a battery power supply.

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