A detachable medical drill bit device

Abstract

This utility model provides a detachable medical drill bit device, relating to the field of medical devices. It includes a main drill bit, an external auxiliary positioning frame, and an external auxiliary support column. The external auxiliary positioning frame is located on the outer side of the main drill bit. The external auxiliary support column is threadedly connected to the outer side of the external auxiliary positioning frame in a ring array. A rotating guide ring is rotatably connected to the inner side of the external auxiliary positioning frame. An external corrugated sealing tube is fixedly connected to the middle of the external auxiliary positioning frame. The main drill bit is axially slidably inserted into the inner side of the auxiliary drill bit, and the auxiliary drill bit is axially slidably inserted into the inner side of the main shaft body. The external corrugated sealing tube surrounds the main drill bit and the auxiliary drill bit internally. The external corrugated sealing tube collects and confines the debris generated during drilling. It also controls bone fragments splashed during drilling within the sealing tube, solving the problems of easy splashing and diffusion of bone fragments during drilling, poor pollution control, and environmental pollution in the operating room caused by bone fragment splashing.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a detachable medical drill bit device. Background Technology

[0002] Medical drills are surgical instruments used in medicine. In orthopedic, neurosurgical and other surgeries, medical drills are used to drill, groove or grind bones (such as the skull, spine, limb bones, etc.).

[0003] Existing medical drill devices mostly adopt an open structure, and bone fragments generated during drilling are easily splashed and spread, resulting in poor pollution control. The splashing bone fragments cause pollution of the operating room environment. In order to avoid postoperative infection caused by residual bone fragments in the incision, it is necessary to spend 15 to 20 minutes cleaning and collecting the bone fragments around the wound. Summary of the Invention

[0004] This utility model provides a detachable medical drill bit device. The outer corrugated sealing tube surrounds the main drill bit and the auxiliary drill bit inside. The outer corrugated sealing tube collects and confines the debris generated during drilling. The outer corrugated sealing tube can control the bone fragments that splash during drilling within the sealing tube, preventing the drilling debris from flying around and shortening the time for cleaning and collecting bone fragments around the wound.

[0005] This utility model provides a detachable medical drill bit device, specifically including a main drill bit, an external auxiliary positioning frame, and an external auxiliary support column. The external auxiliary positioning frame is provided on the outer side of the main drill bit, and the external auxiliary support column is threadedly connected to the outer side of the external auxiliary positioning frame in a ring array. The main drill bit is axially slidably inserted into the inner side of the auxiliary drill bit, and the auxiliary drill bit is axially slidably inserted into the inner side of the main rod body. The main drill bit and the auxiliary drill bit are axially slidably inserted through the cooperation of the groove and the guide rail. A positioning screw is threadedly connected to the middle of the main rod body, and an external limiting ring is protruding from the outer side of the middle of the main rod body.

[0006] Furthermore, a rotating guide ring is rotatably connected to the inner side of the external auxiliary positioning frame, and an external corrugated sealing tube is fixedly connected to the middle of the external auxiliary positioning frame. The external corrugated sealing tube is made of medical-grade silicone material and is fixed to the external auxiliary positioning frame by elastic clamps at both ends.

[0007] Furthermore, the positioning screw is threadedly connected to the main drill bit and the auxiliary drill bit, and the main rod body and the rotating guide ring are axially slidably connected, with the main rod body and the rotating guide ring rotating synchronously.

[0008] Furthermore, the outer corrugated sealing tube surrounds the outside of the main drill bit and the auxiliary drill bit, and the outer auxiliary support column is located outside the outer corrugated sealing tube. The main drill bit and the auxiliary drill bit perform drilling operations inside the outer corrugated sealing tube, and the outer corrugated sealing tube collects the debris generated during drilling.

[0009] Furthermore, the first end of the external auxiliary support column is axially slidably connected to a telescopic slide column, the first end of the telescopic slide column is fixedly connected to a positioning suction cup, the tail end of the external auxiliary support column is rotatably connected to a tail threaded rod, and the inner side of the external auxiliary support column is axially slidably connected to a movable slider.

[0010] Furthermore, the tail threaded rod and the movable slider are threadedly connected, and an inner support spring is fixedly connected to the top of the movable slider.

[0011] Furthermore, the first end of the inner support spring is fixedly connected to a telescopic sliding column, which supports the telescopic sliding column to move outward toward the outer auxiliary support column. The inner support spring of the telescopic sliding column can adapt to bone surfaces with different curvatures.

[0012] This utility model provides a detachable medical drill bit device, which has the following beneficial effects:

[0013] The outer corrugated sealing tube surrounds the main drill bit and the auxiliary drill bit inside. The outer corrugated sealing tube collects and confines the debris generated during drilling. The outer corrugated sealing tube can control the bone fragments that splash during drilling within the sealing tube, preventing the drilling debris from flying around everywhere, reducing the burden of cleaning and collecting waste debris, and shortening the postoperative waste debris cleaning time from 15 minutes to 3 minutes.

[0014] The external auxiliary support column is positioned around the drill hole by the positioning suction cup of the telescopic sliding column. The cooperation between the external auxiliary support column and the external auxiliary positioning frame completes the auxiliary support and positioning of the main rod body and the surgical site. It provides auxiliary support force to the main rod body, reduces the shaking when the person holds the drill, and makes it easier for the person to maintain stability when drilling. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0019] Figure 2 A schematic diagram of the main drill bit structure of this application is shown;

[0020] Figure 3 A schematic diagram of the external auxiliary positioning frame structure of this application is shown;

[0021] Figure 4 A schematic diagram of the partial cross-sectional structure of the external auxiliary support column of this application is shown;

[0022] Figure 5 A schematic diagram of the half-section structure of the external corrugated sealing tube of this application is shown;

[0023] Figure 6 This invention presents a structural schematic diagram showing the main drill bit, external auxiliary positioning frame, and external auxiliary support column in their separated states.

[0024] Figure label:

[0025] 1. Main drill bit; 101. Secondary drill bit; 102. Main rod body; 103. Positioning screw; 104. Outer limit ring;

[0026] 2. External auxiliary positioning frame; 201. Rotary guide ring; 202. External corrugated sealing tube;

[0027] 3. External auxiliary support column; 301. Telescopic sliding column; 302. Positioning suction cup; 303. Tail threaded rod; 304. Moving slider; 305. Internal support spring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Example 1: Please refer to Figures 1 to 6 :

[0030] This utility model proposes a detachable medical drill bit device, including a main drill bit 1, an external auxiliary positioning frame 2, and an external auxiliary support column 3. The main drill bit 1 is axially slidably inserted into the inner side of the auxiliary drill bit 101, and the auxiliary drill bit 101 is axially slidably inserted into the inner side of the main rod body 102. The main drill bit 1 and the auxiliary drill bit 101 are axially slidably inserted through the cooperation of the groove and the guide rail. A positioning screw 103 is threadedly connected to the middle of the main rod body 102, and an external limiting ring 104 is protruding from the outer side of the middle of the main rod body 102. The positioning screw 103 is threadedly connected to the main drill bit 1 and the auxiliary drill bit 101. The main rod body 102 and the rotating guide ring 201 are axially slidably inserted and connected. The main rod body 102 and the rotating guide ring 201 rotate synchronously. An external auxiliary positioning frame 2 is provided on the outer side of the main drill bit 1. A rotating guide ring 201 is connected to the side. An outer corrugated sealing tube 202 is fixedly connected to the middle of the outer auxiliary positioning frame 2. The outer corrugated sealing tube 202 is made of medical-grade silicone and is fixed to the outer auxiliary positioning frame 2 by elastic clamps at both ends. An outer auxiliary support column 3 is threadedly connected to the outer side of the outer auxiliary positioning frame 2 in a ring array. A telescopic slide column 301 is axially slidably connected to the first end of the outer auxiliary support column 3. A positioning suction cup 302 is fixedly connected to the first end of the telescopic slide column 301. A tail threaded rod 303 is rotatably connected to the tail of the outer auxiliary support column 3. A movable slider 304 is axially slidably connected to the inner side of the outer auxiliary support column 3. The tail threaded rod 303 and the movable slider 304 are threadedly connected. An inner support spring 305 is fixedly connected to the top of the movable slider 304.

[0031] In this embodiment, the outer corrugated sealing tube 202 surrounds the outside of the main drill bit 1 and the auxiliary drill bit 101, and the outer auxiliary support column 3 is located outside the outer corrugated sealing tube 202. The main drill bit 1 and the auxiliary drill bit 101 perform drilling operations inside the outer corrugated sealing tube 202. The outer corrugated sealing tube 202 collects and restricts the debris generated during drilling. The outer corrugated sealing tube 202 can control the bone fragments splashed during drilling within the sealing tube, shortening the time for postoperative waste cleaning and collection.

[0032] In this embodiment, the first end of the inner support spring 305 is fixedly connected to a telescopic slide column 301. The inner support spring 305 supports the telescopic slide column 301 to move outward toward the outer auxiliary support column 3. The inner support spring 305 of the telescopic slide column 301 can adapt to bone surfaces with different curvatures. The cooperation between the outer auxiliary support column 3 and the outer auxiliary positioning frame 2 completes the auxiliary support and positioning of the surgical site for the main rod 102, provides auxiliary support force for the main rod 102, and reduces the shaking when the person holds the drill.

[0033] In this second embodiment, based on the first embodiment, the outer corrugated sealing tube 202 is a transparent corrugated rubber structure. The transparent outer corrugated sealing tube 202 makes it easier to view the drilling status of the main drill bit 1. A through hole is also provided in the middle of the outer corrugated sealing tube 202, which facilitates water injection and cooling operations at the drilling location.

[0034] The working principle of this embodiment is as follows: The tail end of the main rod 102 is slidably fixed to the electric handle. The electric handle drives the main rod 102 to rotate for drilling. The main drill bit 1 is fixed to the auxiliary drill bit 101, the main drill bit 1, and the main rod 102 by positioning screws 103. During disassembly, loosening the positioning screws 103 allows for separation. After separation, the auxiliary drill bit 101, the main drill bit 1, and the main rod 102 are easily cleaned and disinfected. The external auxiliary positioning frame 2 is axially slidably connected to the main rod 102 by a rotating guide ring 201. The external limiting ring 104 is attached to the top of the rotating guide ring 201. The rod 102 drives the rotating guide ring 201 to move downward axially through the outer limiting ring 104. The outer auxiliary support column 3 is attached to the surgical site through the positioning suction cup 302. The thread of the rotating tail thread rod 303 guides the moving slider 304 to move axially. The moving slider 304 compresses the inner support spring 305, thereby adjusting the support force between the inner support spring 305 and the telescopic slide column 301 and the outer auxiliary support column 3. This adjusts the support force of the telescopic slide column 301 on the outer auxiliary positioning frame 2, allowing the telescopic slide column 301 to support the outer auxiliary positioning frame 2 to move upward away from the surgical position below.

[0035] The outer corrugated sealing tube 202 is made of medical-grade silicone. The outer corrugated sealing tube 202 surrounds the main drill bit 1 and the auxiliary drill bit 101 inside. The main drill bit 1 and the auxiliary drill bit 101 perform drilling operations inside the outer corrugated sealing tube 202. The outer corrugated sealing tube 202 collects and confines the debris generated during drilling. The outer corrugated sealing tube 202 can control the bone fragments that splash during drilling within the outer corrugated sealing tube 202, avoiding the situation where drilling debris flies around and causes pollution of the operating room environment due to bone fragments. It reduces the burden of cleaning and collecting waste, with a collection efficiency of over 98%. Compared with the traditional open drilling method, the postoperative waste cleaning time is shortened from 15 minutes to 3 minutes, and the risk of operating room pollution is reduced by 70%. The hydrophobic coating on the inner wall of the sealing tube has a surface energy of ≤20mN / m, which makes it difficult for bone fragments to adhere, further improving the cleaning efficiency.

[0036] The external auxiliary support column 3 is positioned around the drill hole by the positioning suction cup 302 of the telescopic sliding column 301. The cooperation between the external auxiliary support column 3 and the external auxiliary positioning frame 2 completes the auxiliary support and positioning of the main rod 102 and provides auxiliary support force to the main rod 102, reducing the shaking when the operator holds the drill. It is easier for the operator to maintain stability when drilling. The shaking amplitude when holding the drill can be reduced from ±2mm to ±0.3mm, which significantly improves the stability of operation. It is especially suitable for drilling delicate parts such as the skull, further reducing the risk of nerve damage.

Claims

1. A detachable medical drill device comprising: The main drill bit (1), the external auxiliary positioning frame (2) and the external auxiliary support column (3) are characterized in that the external auxiliary positioning frame (2) is provided on the outside of the main drill bit (1), the external auxiliary positioning frame (2) is threadedly connected to the external auxiliary support column (3) in an annular array on the outside of the external auxiliary positioning frame (2), the rotating guide ring (201) is rotatably connected to the inside of the external auxiliary positioning frame (2), and the external corrugated sealing pipe (202) is fixedly connected to the middle of the external auxiliary positioning frame (2).

2. The detachable medical drill device according to claim 1, wherein The main drill bit (1) is axially slidably inserted inside the auxiliary drill bit (101), the auxiliary drill bit (101) is axially slidably inserted inside the main rod body (102), the main rod body (102) is threaded with a positioning screw (103) in the middle, and an outer limiting ring (104) is protruding from the outer side of the middle of the main rod body (102).

3. The detachable medical drill device according to claim 2, wherein The positioning screw (103) is threadedly connected to the main drill bit (1) and the auxiliary drill bit (101), and the main rod body (102) and the rotating guide ring (201) are axially slidably connected.

4. The detachable medical drill device according to claim 3, wherein The outer corrugated sealing pipe (202) surrounds the outside of the main drill bit (1) and the auxiliary drill bit (101), and the outer auxiliary support column (3) is located outside the outer corrugated sealing pipe (202).

5. The detachable medical drill bit device of claim 1, wherein, The first end of the external auxiliary support column (3) is axially slidably connected to a telescopic slide column (301), the first end of the telescopic slide column (301) is fixedly connected to a positioning suction cup (302), the tail end of the external auxiliary support column (3) is rotatably connected to a tail thread rod (303), and the inner side of the external auxiliary support column (3) is axially slidably connected to a movable slider (304).

6. The detachable medical drill device according to claim 5, wherein The tail thread rod (303) and the movable slider (304) are threadedly connected, and the top of the movable slider (304) is fixedly connected to an inner support spring (305).

7. The detachable medical drill bit device of claim 6, wherein, The inner support spring (305) is fixedly connected to a telescopic slide column (301) at its head end, and the inner support spring (305) supports the telescopic slide column (301) to move outward toward the outer auxiliary support column (3).

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