Bone side drilling device

Abstract

The utility model relates to mechanical technical field. Bone side surface drilling device, including external passage, puncture ware, internal curved passage and curved bone drill, external passage and puncture ware are provided with the positioning clamping structure of mutual matching, internal curved passage is along length direction in proper order rigid straight pipe section, elastic curved section and front end straight pipe section, curved bone drill is along length direction in proper order straight line rigid section, flexible transmission section and rigid bone drill, curved bone drill is used for detachable insertion internal curved passage, when curved bone drill inserts internal curved passage, rigid bone drill's head end exposes internal curved passage, and curved bone drill rotatable installation in internal curved passage constitutes a steerable drilling assembly, external passage is switched and is provided with puncture ware and drilling assembly. The utility model first passes through puncture and completes the puncture of muscle fascia part, then passes through the steering drilling of steerable drilling assembly and establishes lateral opening structure.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically to a drilling device. Background Technology

[0002] In sports medicine surgeries or spinal punctures, especially when dealing with complex bone structures or special locations, it is often necessary to create a channel within the bone for further manipulation or implant fixation. Traditional bone drills typically use a straight-line drilling method, which is suitable for straight bone surfaces or relatively regular anatomical areas. However, in some special anatomical areas, such as the sides of bones or areas with curves, straight-line drilling is difficult to achieve the ideal position and may even lead to drilling failure due to uneven force or limited space. This limitation is particularly prominent in sports medicine, as many procedures need to be performed on the sides of bones or in curved areas.

[0003] There is an urgent need for a device that can drill holes on the side of bones. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a bone side drilling device to solve at least one of the above technical problems.

[0005] To achieve the above objectives, this utility model provides a bone lateral drilling device, characterized in that it includes an external channel, a puncture device, an internal curved channel, and a curved bone drill;

[0006] The external channel and the puncture device are provided with a matching positioning and locking structure;

[0007] The inner curved channel consists of a rigid straight pipe section, an elastic curved section, and a front straight pipe section in sequence along its length.

[0008] The curved bone drill consists of a straight rigid section, a flexible transmission section, and a rigid bone drill along its length.

[0009] The curved bone drill is detachably inserted into the inner curved channel. When the curved bone drill is inserted into the inner curved channel, the head end of the rigid bone drill protrudes out of the inner curved channel, and the curved bone drill is rotatably installed in the inner curved channel to form a steerable drilling assembly.

[0010] The puncture device and the drilling assembly are switched and inserted within the external channel.

[0011] This invention allows for the switching of the insertion puncture device and the drilling assembly via an external channel, thereby enabling the puncture of the muscle fascia first, and then the drilling assembly to steer and drill, thus establishing a lateral opening structure.

[0012] More preferably, when the external channel is connected to the drilling assembly, the elastic bending section is located on the periphery of the external channel.

[0013] More preferably, a handle is fixed to the end of the external channel, and the handle has a mounting hole facing the inner hole of the external channel;

[0014] Furthermore, the inner wall of the mounting hole is fixed with circumferentially arranged positioning protrusions;

[0015] The end of the puncture device is fixed with a first connecting end, and the first connecting end is fixed with a first rotating locking groove that rotates and locks the positioning protrusion.

[0016] The positioning protrusion and the first rotating snap-fit ​​groove together form the positioning snap-fit ​​structure.

[0017] This facilitates the relative fixation of the external channel and the puncture device.

[0018] More preferably, the first connecting end includes a first limiting plate, a first snap-fit ​​portion, and a first reinforcing portion arranged sequentially along the axial direction;

[0019] The first snap-fit ​​portion includes a first annular structure that is slidably connected to the inner side of the positioning protrusion. A first L-shaped limiting block is fixed to the outer side of the first annular structure. The first L-shaped limiting block includes a first axial limiting block for axially limiting the positioning protrusion and a first circumferential limiting block for circumferentially limiting the positioning protrusion. The first axial limiting block and the limiting plate form a gap for embedding the positioning protrusion.

[0020] The first L-shaped limiting block and the first limiting plate form the first rotating snap-fit ​​groove;

[0021] The reinforcing part includes a sleeve for inserting the puncture rod of the puncture device, and the outer wall of the sleeve is fixed with circumferentially arranged reinforcing ribs, the top of which is connected to the lower side of the annular structure.

[0022] More preferably, the end of the rigid straight pipe section is fixed with a second connecting end, and the second connecting end is fixed with a second rotating snap-fit ​​groove that rotates and snaps into the positioning protrusion;

[0023] The second connecting end includes a second limiting baffle, and a positioning slot is provided on the second limiting baffle;

[0024] The end of the linear rigid segment is connected to a rotary joint, which is rotatably connected to the linear rigid segment, and a positioning block that is inserted into the positioning slot is fixed on the rotary joint.

[0025] More preferably, the second connecting end includes a second limiting plate, a second snap-fit ​​portion, and a second reinforcing portion arranged sequentially along the axial direction;

[0026] The second snap-fit ​​portion includes a second ring structure that is slidably connected to the inner side of the positioning protrusion. A second L-shaped limiting block is fixed to the outer side of the second ring structure. The second L-shaped limiting block includes a second axial limiting block for axial limiting of the positioning protrusion and a second circumferential limiting block for circumferential limiting of the positioning protrusion. The second axial limiting block and the second limiting plate form a gap for embedding the positioning protrusion.

[0027] The second L-shaped limiting block and the second limiting plate form the second rotating snap-fit ​​groove;

[0028] The second reinforcing part includes a sleeve for inserting the rigid straight pipe section, the outer wall of the sleeve is fixed with circumferentially arranged reinforcing ribs, and the top of the reinforcing ribs is connected to the lower side of the second annular structure.

[0029] More preferably, the rotary joint and the linear rigid section are rotatably connected via bearings.

[0030] More preferably, the flexible transmission section can be a spiral tube, a braided flexible shaft, or a spring.

[0031] More preferably, the flexible transmission section includes a braided flexible shaft disposed inside and outside and an elastic spiral structure, wherein the two ends of the braided flexible shaft and the elastic spiral structure are connected by welding or pressing.

[0032] Alternatively, the flexible transmission section may be a hollow spiral structure that is cut and formed in one piece.

[0033] Not only does it solve the problems of processing stability and strength, but the hollow spiral structure can also reduce vibration when the bending bone drill is working at high speed.

[0034] More preferably, when the curved bone drill is installed in the inner curved channel, the flexible transmission section is located inside the elastic curved section.

[0035] Compared with the prior art, the beneficial effects of this utility model are:

[0036] To overcome the drawbacks of traditional linear vertebral puncture, a segmented puncture technique is used to create a curved bone tunnel within the vertebra to reach the target point, providing crucial technical support for subsequent radiofrequency ablation. Attached Figure Description

[0037] Figure 1 This is an exploded view of a specific embodiment 1 of the present utility model;

[0038] Figure 2This is a schematic diagram of the external channel and puncture device combined in a specific embodiment 1 of this utility model;

[0039] Figure 3 This is a schematic diagram of the external channel and drilling assembly combined in a specific embodiment 1 of this utility model;

[0040] Figure 4 This is a partial structural diagram of the handle in a specific embodiment 1 of the present invention;

[0041] Figure 5 This is a partial structural diagram of the first connecting end in a specific embodiment 1 of the present utility model;

[0042] Figure 6 This is a partial structural diagram of the second connecting end in a specific embodiment 1 of the present invention;

[0043] Figure 7 This is a partial structural diagram of the rotary joint in a specific embodiment 1 of this utility model.

[0044] In the diagram: 1 is the external channel, 2 is the puncture instrument, 3 is the internal curved channel, 4 is the curved bone drill, 5 is the first connecting end, 6 is the second connecting end, and 7 is the rotary joint.

[0045] 12 is a handle, 13 is a mounting hole, 14 is a positioning protrusion; 31 is a rigid straight pipe section, 32 is an elastic bending section, 33 is a front straight pipe section; 41 is a straight rigid section, 42 is a flexible transmission section, 43 is a rigid bone drill, 51 is a reinforcing rib, 52 is the first rotating snap-fit ​​groove, 63 is a positioning slot, and 71 is a positioning block. Detailed Implementation

[0046] The present invention will be further described below with reference to the accompanying drawings.

[0047] See Figures 1 to 7Specific Embodiment 1: A bone lateral drilling device includes an external channel 1, a puncture device 2, an internal curved channel 3, and a curved bone drill 4. The external channel 1 and the puncture device 2 are provided with a matching positioning and locking structure. The internal curved channel 3 consists of a rigid straight tube section 31, an elastic curved section 32, and a front straight tube section 33 along its length. The curved bone drill 4 consists of a straight rigid section 41, a flexible transmission section 42, and a rigid bone drill 43 along its length. The curved bone drill 4 is used for detachable insertion into the internal curved channel 3. When the curved bone drill 4 is inserted into the internal curved channel 3, the head end of the rigid bone drill 43 protrudes out of the internal curved channel 3, and the curved bone drill 4 is rotatably installed in the internal curved channel 3 to form a steerable drilling assembly. The puncture device 2 and the drilling assembly are switched to be inserted in the external channel 1. This utility model achieves the following: first, the puncture of the muscle fascia is completed by puncture, and then the steerable drilling assembly is used for steerable drilling, thereby establishing a lateral opening structure.

[0048] The elastic bending section 32 is bent when no force is applied. When inside the outer channel 1, it is forced to straighten by the resistance of the inner wall. During use, the part of the elastic bending section 32 that protrudes from the outer channel 1 will return to its bent state. The inner bending channel is made of stainless steel or titanium alloy, preferably nickel-titanium alloy.

[0049] When the external channel 1 is connected to the drilling assembly, the elastic bending section 32 is located on the periphery of the external channel 1.

[0050] A handle 12 is fixed to the end of the external channel 1. The handle 12 has a mounting hole 13 facing the inner hole of the external channel 1. The inner wall of the mounting hole 13 is fixed with circumferentially arranged positioning protrusions 14. The end of the puncture device 2 is fixed with a first connecting end 5. The first connecting end 5 has a first rotating locking groove 52 that rotates and engages with the positioning protrusions 14. The positioning protrusions 14 and the first rotating locking groove together form a positioning locking structure. This facilitates the relative fixation of the external channel 1 and the puncture device 2.

[0051] The first connecting end 5 includes a first limiting plate, a first snap-fit ​​part, and a first reinforcing part arranged sequentially along the axial direction; the first snap-fit ​​part includes a first annular structure that is slidably connected to the inner side of the positioning protrusion 14, and a first L-shaped limiting block is fixed to the outer side of the first annular structure. The first L-shaped limiting block includes a first axial limiting block for axially limiting the positioning protrusion 14 and a first circumferential limiting block for circumferentially limiting the positioning protrusion 14. The first axial limiting block and the limiting plate form a gap for embedding the positioning protrusion 14; the first L-shaped limiting block and the first limiting plate form a first rotating snap-fit ​​groove 52; the first reinforcing part includes a sleeve for inserting the puncture rod of the puncture device 2, and the outer wall of the sleeve is fixed with circumferentially arranged reinforcing ribs 51. The top of the reinforcing ribs 51 is connected to the lower side of the annular structure.

[0052] The end of the rigid straight pipe section 31 is fixed with a second connecting end 6, and the second connecting end 6 is fixed with a second rotating snap-fit ​​groove of the rotating snap-fit ​​positioning protrusion 14; the second connecting end 6 includes a second limiting baffle, and a positioning slot 63 is provided on the second limiting baffle; the end of the straight rigid section 41 is connected with a rotary joint 7, the rotary joint 7 is rotatably connected to the straight rigid section 41, and a positioning block 71 that is inserted into the positioning slot 63 is fixed on the rotary joint 7.

[0053] The area where the curved bone drill 4 extends to the rotary joint 7 is connected to the input of the connecting torque to drive the curved bone drill 4 to rotate, and at the same time, pressure is applied to the curved bone drill 4 to make it move forward to complete the drilling.

[0054] The second connecting end 6 includes a second limiting plate, a second snap-fit ​​part, and a second reinforcing part arranged sequentially along the axial direction; the second snap-fit ​​part includes a second ring structure that is slidably connected to the inner side of the positioning protrusion 14, and a second L-shaped limiting block is fixed to the outer side of the second ring structure. The second L-shaped limiting block includes a second axial limiting block for axially limiting the positioning protrusion 14 and a second circumferential limiting block for circumferentially limiting the positioning protrusion 14. The second axial limiting block and the second limiting plate form a gap for embedding the positioning protrusion 14; the second L-shaped limiting block and the second limiting plate form a second rotating snap-fit ​​groove; the second reinforcing part includes a sleeve for inserting a rigid straight pipe section, and the outer wall of the sleeve is fixed with circumferentially arranged reinforcing ribs. The top of the reinforcing ribs is connected to the lower side of the second ring structure.

[0055] The rotary joint 7 is rotatably connected to the linear rigid section 41 via a bearing.

[0056] The flexible transmission section 42 can be a spiral tube, a braided flexible shaft, a spring, etc. The flexible transmission section 42 includes an inner and outer braided flexible shaft and an elastic spiral structure, with the two ends of the braided flexible shaft and the elastic spiral structure connected by welding or pressing. Alternatively, the straight rigid section 43 and the flexible transmission section 42 can be hollow tubular. The flexible transmission section 42 is a one-piece, hollow spiral structure. This not only solves the problems of processing stability and strength, but also reduces vibration during high-speed operation of the bending drill 4. The braided flexible shaft is simply a braided flexible shaft made of twisted metal wires.

[0057] When the curved bone drill 4 is installed in the inner curved channel 3, the flexible transmission section 42 is located inside the elastic curved section 32.

[0058] The steps for using this device are as follows:

[0059] S1: First, use the external channel 1 and the puncture instrument 2 to complete the puncture of the muscle fascia.

[0060] S2: Insert the curved bone drill 4 into the inner curved channel 3;

[0061] Remove the trocar 2 and insert the inner curved channel 3 with the curved bone drill 4 into the outer channel 1;

[0062] S3: Connect the power transmission torque input to the proximal end of the curved bone drill 4 to drive the curved bone drill 4 to rotate, and at the same time apply pressure to the curved bone drill 4 to make it move forward to complete the drilling.

[0063] Once the drilling is complete and the intraosseous curved channel is established, the curved bone drill 4 is removed, and an ablation tube is inserted into the intraosseous curved channel for ablation.

[0064] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A drilling device for bone side surfaces, characterized in that, This includes external access channels, trocars, internal curved access channels, and curved bone drills; The external channel and the puncture device are provided with a matching positioning and locking structure; The inner curved channel consists of a rigid straight pipe section, an elastic curved section, and a front straight pipe section in sequence along its length. The curved bone drill consists of a straight rigid section, a flexible transmission section, and a rigid bone drill along its length. The curved bone drill is detachably inserted into the inner curved channel. When the curved bone drill is inserted into the inner curved channel, the head end of the rigid bone drill protrudes out of the inner curved channel, and the curved bone drill is rotatably installed in the inner curved channel to form a steerable drilling assembly. The puncture device and the drilling assembly are switched and inserted within the external channel.

2. The bone lateral surface drilling device according to claim 1, characterized in that: When the external channel is connected to the drilling assembly, the elastic bending section is located on the periphery of the external channel.

3. The bone lateral surface drilling device according to claim 1, characterized in that: A handle is fixed to the end of the external channel, and the handle has a mounting hole facing the inner hole of the external channel. Furthermore, the inner wall of the mounting hole is fixed with circumferentially arranged positioning protrusions; The end of the puncture device is fixed with a first connecting end, and the first connecting end is fixed with a first rotating locking groove that rotates and locks the positioning protrusion. The positioning protrusion and the first rotating snap-fit ​​groove together form the positioning snap-fit ​​structure.

4. The bone lateral surface drilling device according to claim 3, characterized in that: The first connecting end includes a first limiting plate, a first snap-fit ​​part, and a first reinforcing part arranged sequentially along the axial direction; The first snap-fit ​​portion includes a first annular structure that is slidably connected to the inner side of the positioning protrusion. A first L-shaped limiting block is fixed to the outer side of the first annular structure. The first L-shaped limiting block includes a first axial limiting block for axially limiting the positioning protrusion and a first circumferential limiting block for circumferentially limiting the positioning protrusion. The first axial limiting block and the limiting plate form a gap for embedding the positioning protrusion. The first L-shaped limiting block and the first limiting plate form the first rotating snap-fit ​​groove; The reinforcing part includes a sleeve for inserting the puncture rod of the puncture device, and the outer wall of the sleeve is fixed with circumferentially arranged reinforcing ribs, the top of which is connected to the lower side of the annular structure.

5. The bone lateral surface drilling device according to claim 3, characterized in that: The end of the rigid straight pipe section is fixed with a second connecting end, and the second connecting end is fixed with a second rotating snap-fit ​​groove that rotates and snaps into the positioning protrusion. The second connecting end includes a second limiting baffle, and a positioning slot is provided on the second limiting baffle; The end of the linear rigid segment is connected to a rotary joint, which is rotatably connected to the linear rigid segment, and a positioning block that is inserted into the positioning slot is fixed on the rotary joint.

6. The bone lateral surface drilling device according to claim 5, characterized in that: The second connecting end includes a second limiting plate, a second snap-fit ​​part, and a second reinforcing part arranged sequentially along the axial direction; The second snap-fit ​​portion includes a second ring structure that is slidably connected to the inner side of the positioning protrusion. A second L-shaped limiting block is fixed to the outer side of the second ring structure. The second L-shaped limiting block includes a second axial limiting block for axial limiting of the positioning protrusion and a second circumferential limiting block for circumferential limiting of the positioning protrusion. The second axial limiting block and the second limiting plate form a gap for embedding the positioning protrusion. The second L-shaped limiting block and the second limiting plate form the second rotating snap-fit ​​groove; The second reinforcing part includes a sleeve for inserting the rigid straight pipe section, the outer wall of the sleeve is fixed with circumferentially arranged reinforcing ribs, and the top of the reinforcing ribs is connected to the lower side of the second annular structure.

7. The bone lateral surface drilling device according to claim 5, characterized in that: The rotary joint is rotatably connected to the linear rigid section via a bearing.

8. The bone lateral surface drilling device according to claim 1, characterized in that: The flexible transmission section is a spiral tube, a braided flexible shaft, or a spring.

9. The bone lateral surface drilling device according to claim 1, characterized in that: The flexible transmission section includes a braided flexible shaft with internal and external components and an elastic spiral structure. The two ends of the braided flexible shaft and the elastic spiral structure are connected by welding or pressing.

10. The bone lateral surface drilling device according to claim 1, characterized in that: When the curved bone drill is installed in the inner curved channel, the flexible transmission section is located inside the elastic curved section.

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