Screw placer for anterior cervical surgery

Abstract

The utility model discloses an anterior cervical surgery screw placer which comprises a holder body, a placement mechanism and a connecting mechanism. The clamping device is characterized in that the placing mechanism comprises a rotating piece arranged at the clamping end of the clamping device body, a connecting rod detachably arranged on the rotating piece, a plurality of moving sleeves connected to the connecting rod in a sliding mode, and a drilling device, a tapping device and a screwing device which are detachably connected to the moving sleeves correspondingly; the connecting mechanism comprises a connecting sleeve and a limiting rod, wherein the connecting sleeve is connected to the drilling device, the tapping device and the screwing device in a sliding mode, and the limiting rod is arranged on the connecting sleeve. The drilling device, the tapping device and the screwing device are integrated on the clamping device body and share the grab handle, so that tools are rapidly switched, the depth is accurately controlled, the operation steps and pauses are reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical auxiliary devices, specifically relating to a screw placement device for anterior cervical spine surgery. Background Technology

[0002] With advancements in medical technology, zero-notch fusion has been increasingly applied to anterior cervical spine surgery. This technique eliminates the need for additional plates at the anterior vertebral body margins, instead directly fixing adjacent vertebrae using screws embedded within the fusion cage. During the procedure, the surgeon uses specialized tools to drill, tap, and insert screws, which are then directly attached to the vertebral body via the fusion cage, eliminating the need for titanium plates. This improvement significantly reduces pressure and irritation to anterior soft tissues, and substantially enhances postoperative comfort and recovery for patients.

[0003] However, in current surgical procedures, tools such as drills, taps, and screwdrivers are separate and independent tools, requiring surgeons to frequently change these tools during the operation, which reduces the continuity and efficiency of the procedure.

[0004] To solve the above-mentioned technical problems, this utility model provides a screw placement device for anterior cervical spine surgery. Utility Model Content

[0005] This invention designs a screw placement device for anterior cervical spine surgery to solve the problems existing in the background art.

[0006] To achieve the above-mentioned technical effects, this utility model is implemented through the following technical solution: a screw placement device for anterior cervical spine surgery, comprising a clamping body, a placement mechanism, and a connecting mechanism.

[0007] Furthermore, the placement mechanism includes a rotating component disposed at the clamping end of the clamping body, a connecting rod detached from the rotating component, multiple movable sleeves slidably connected to the connecting rod, and a drill, a tap, and a screwdriver respectively detached from and connected to the multiple movable sleeves; the connection mechanism includes a connecting sleeve slidably connected to the drill, the tap, and the screwdriver, and a limiting rod disposed on the connecting sleeve.

[0008] Furthermore, the clamping end of the clamping body is provided with a first guide channel block, the fixed end of the rotating component is fixedly connected to the first channel of the first guide channel block, and the rotating end of the rotating component is engaged with the bottom end of the connecting rod.

[0009] Furthermore, the drill, tap, and screwdriver include a rod body and a connecting rod rotatably connected to the upper end of the rod body. A handle is detachably connected to the upper end of the connecting rod. A sleeve is provided below the rod body of the drill and tap, and a pipe clamp is provided at the front end of the sleeve. A fixing sleeve is threaded onto the sleeve. A drill bit and a threaded cutter are detachably connected inside the sleeve of the drill and tap, respectively.

[0010] Furthermore, the rod body is characterized by having a snap-fit ​​block and a movable sleeve for engagement, and connecting slide rails are provided on both sides of the upper end of the rod body and both sides of the lower end of the connecting rod. The drill bit and the thread cutter are both marked with scale markings.

[0011] Furthermore, the connecting sleeve is provided with sliding rods on both sides, and the sliding rods are connected to the connecting slide rail.

[0012] The beneficial effects of this utility model are:

[0013] This invention integrates tools such as drills, taps, and screwdrivers onto the holder body, greatly reducing the complexity of tool changes. Furthermore, tools with different functions share the same handle, resulting in a compact structure that ensures ease and efficiency of operation. Simultaneously, this design provides precise control over drilling and tapping depths, allowing surgeons to quickly switch tools, reducing operational steps and unnecessary pauses during surgery, thereby significantly improving surgical efficiency. Attached Figure Description

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the clamping end structure of the clamping device body of this utility model;

[0017] Figure 3 This is a schematic diagram of the placement mechanism of this utility model;

[0018] Figure 4 This utility model Figure 3 A schematic diagram of the structure at center A;

[0019] Figure 5 This is a schematic diagram of the connection relationship of the sleeve of this utility model;

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Clamp body; 11. First guide channel block; 2. Placement mechanism; 21. Connecting rod; 23. Drill; 22. Moving sleeve; 24. Rotating component; 25. Tapping tool; 26. Thread tightener; 27. Rod body; 271. Snap-fit ​​block; 28. Connecting rod; 281. Handle; 29. ​​Sleeve; 291. Pipe clamp; 292. Fixed sleeve; 293. Scale mark; 3. Connecting mechanism; 31. Connecting sleeve; 311. Slide rod; 32. Limiting rod; 33. Connecting slide rail. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] See Figures 1 to 5 As shown, a screw placement device for anterior cervical spine surgery includes a clamping body 1, a placement mechanism 2, and a connecting mechanism 3. The placement mechanism 2 includes a rotating component 24 disposed at the clamping end of the clamping body 1, a connecting rod 21 detached from the rotating component 24, multiple movable sleeves 22 slidably connected to the connecting rod 21, and a drill 23, a tap 25, and a screw tightener 26 respectively detachably connected to the multiple movable sleeves 22. The connecting mechanism 3 includes a connecting sleeve 31 slidably connected to the drill 23, tap 25, and screw tightener 26, and a limiting rod 32 disposed on the connecting sleeve 31.

[0025] The screwdriver 26 can be used to replace screws of different sizes according to the patient's surgical condition.

[0026] The connecting rod 21 and the movable sleeve 22 are slidably connected by a slide rail mechanism. A linear slide rail is provided on the connecting rod 21, and a slider that cooperates with the linear slide rail is provided on the side of the movable sleeve 22.

[0027] The clamping end of the clamping device body 1 is provided with a first guide channel block 11. The fixed end of the rotating component 24 is fixedly connected to the first channel of the first guide channel block 11, and the rotating end of the rotating component 24 is engaged with the bottom end of the connecting rod 21. The rotating component 24 is a double-sided rotating component.

[0028] The drill 23, tap 25, and screwdriver 26 each include a rod 27 and a connecting rod 28 rotatably connected to the upper end of the rod 27 via a pivot or hinge. A handle 281 is detachably connected to the upper end of the connecting rod 28; there is only one handle 281, which can be adapted to each connecting rod 28. A sleeve 29 is provided below the rod 27 of the drill 23 and tap 25. A pipe clamp 291 is provided at the front end of the sleeve 29. The pipe clamp 291 has multiple evenly spaced grooves at the end of the sleeve 29, forming multiple elastic "petals." A fixing sleeve 292 is threaded onto the sleeve 29. One side of the fixing sleeve 292 is threaded, and the other side is used to fix the pipe clamp 291. A drill bit and a screwdriver are detachably connected inside the sleeve 29 of the drill 23 and tap 25, respectively. When the retaining sleeve 292 moves forward to cover the "petals," these "petals" retract inward, causing the sleeve 29 to tightly clamp the drill bit or thread cutter inside, thereby achieving fixation. Furthermore, the diameter of the sleeve 29 is larger than the diameter of the first channel.

[0029] The rod body 27 is provided with a snap-fit ​​block 271 and a movable sleeve 22 for engaging. The upper ends of the rod body 27 and the lower ends of the connecting rod 28 are provided with connecting slide rails 33. The drill bit and the thread cutter are provided with scale marks 293 to control the depth of the drill bit or the thread cutter.

[0030] The connecting sleeve 31 has slide rods 311 on both sides, and the slide rods 311 and the connecting slide rail 33 are connected in cooperation.

[0031] Example 2

[0032] The operating principle of this utility model:

[0033] Before performing a zero-notch cervical fusion surgery on the anterior cervical spine, a fusion device is pre-designed based on the patient's anterior cervical spine approach, and suitable drills, tappers, and screws are selected. The drills and tappers have graduations 293 for measuring and controlling their depth. The drills and tappers move within the sleeve 29, using the edge of the sleeve clamp 291 as a reference to ensure consistent drilling and tapping depths. After determining the drilling and tapping depths, the drills and tappers are secured by rotating the retaining sleeves 292 on the drill 23 and tapper 25.

[0034] During the surgery, the clamping device 1 is used to clamp the fusion device, which has been pre-selected based on the height and width of the intervertebral space. After the clamping end of the clamping device 1 aligns with the channel hole on the fusion device, the medical staff, using C-arm fluoroscopy, accurately implants the fusion device into the center of the patient's intervertebral space and presses the clamping end face of the clamping device 1 onto the vertebral surface for stability. Then, the bottom end of the connecting rod 21, which includes a drill 23, a tap 25, and a screw tightener 26, is snapped and fixed to the rotating end of the rotating component 24. Another surgeon is required to perform the screw placement procedure.

[0035] First, rotate the connecting rod 28 on the drill 23 to connect it with the rod body 27. Push the connecting sleeve 31 upwards so that the sliding rods 311 on both sides of the connecting sleeve 31 connect with the connecting slide rails 33 on both sides of the lower end of the connecting rod 28. Then, fix the connecting rod 28 to the rod body 27 by operating the limiting rod 32. Next, the medical staff holds the handle 281 and pushes it downwards. Driven by the moving sleeve 22, the drill bit of the drill 23 reaches the designated drilling position through the first channel of the first guide channel block 11. Rotate the handle 281 to make the drill 23 drill. Since the diameter of the sleeve 29 is larger than the diameter of the first channel, when the tube clamp 291 at the front end of the sleeve 29 touches the surface of the first channel, it indicates that the required drilling depth has been reached. Then, push out the drill 23, release the limiting rod 32 to fold the connecting rod 28, and remove the handle 281. Next, assemble the rod 27 and connecting rod 28 of the tapper 25, rotate the tapper 25 to the position above the first channel, and insert the handle 281 into the connecting rod 28 of the tapper 25. Tap the drilled hole according to the above operation steps.

[0036] After tapping is completed, assemble the rod 27 and connecting rod 28 of the screwdriver 26 according to the above steps to fix the first screw. After the first screw is fixed, the medical staff continue to fix the screws in the remaining three directions, thus completing the fixation and placement of the fusion device in the intervertebral space.

Claims

1. A screw placement device for anterior cervical spine surgery, comprising a clamping body (1), a placement mechanism (2), and a connecting mechanism (3), characterized in that: The placement mechanism (2) includes a rotating part (24) disposed at the clamping end of the clamping body (1), a connecting rod (21) detached from the rotating part (24), a plurality of movable sleeves (22) slidably connected to the connecting rod (21), and a drill (23), a tap (25), and a screwdriver (26) respectively detached from the plurality of movable sleeves (22); the connection mechanism (3) includes a connecting sleeve (31) slidably connected to the drill (23), the tap (25), and the screwdriver (26), and a limiting rod (32) disposed on the connecting sleeve (31).

2. The cervical anterior cervical spine surgery screw placement device according to claim 1, characterized in that, The clamping end of the clamping body (1) is provided with a first guide channel block (11), and the fixed end of the rotating part (24) is fixedly connected to the first channel of the first guide channel block (11). The rotating end of the rotating part (24) is engaged with the bottom end of the connecting rod (21).

3. The anterior cervical spine surgery screw placement device according to claim 1, characterized in that, The drill (23), tap (25) and screwdriver (26) include a rod (27) and a connecting rod (28) rotatably connected to the upper end of the rod (27). The upper end of the connecting rod (28) is detachably connected to a handle (281). A sleeve (29) is provided below the rod (27) of the drill (23) and tap (25). A pipe clamp (291) is provided at the front end of the sleeve (29). A fixing sleeve (292) is threadedly connected to the sleeve (29). A drill bit and a screwdriver are detachably connected inside the sleeve (29) of the drill (23) and tap (25), respectively.

4. The anterior cervical spine surgery screw placement device according to claim 3, characterized in that, The rod (27) is provided with a snap-fit ​​block (271) and a movable sleeve (22) for connection. The upper two sides of the rod (27) and the lower two sides of the connecting rod (28) are provided with connecting slide rails (33). The drill bit and the thread cutter are provided with scale marks (293).

5. The anterior cervical spine surgery screw placement device according to claim 1, characterized in that, The connecting sleeve (31) has slide rods (311) on both sides, and the slide rods (311) and the connecting slide rail (33) are connected in cooperation.

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