Adjustable guide hole device for fracture plate

Abstract

The invention relates to medical equipment, in particular to an adjustable guide hole device for a fracture steel plate, comprising a bracket, an adjusting device and a guide hole sleeve, wherein the adjusting device is fixed on the outside of the bracket and can adjust the outer diameter of the guide hole sleeve, and the guide hole sleeve is arranged on the inside of the bracket to provide a guide for a drill to drill a threaded hole at the distal end of a fracture site; the guide hole sleeve having an incomplete ring and the adjusting device are used to achieve an adjustable outer diameter of the guide hole sleeve; a reference sleeve having the same inner diameter as a casing used for drilling a sliding hole is used as the maximum reference for the outer diameter of the guide hole sleeve, and the guide hole sleeve is placed inside the reference sleeve, so that the guide hole sleeve only needs to be adjusted smaller, thereby reducing the range required for adjustment.

Description

Technical Field

[0001] The invention relates to medical equipment, in particular to an adjustable guide hole device for a fracture steel plate. Background Art

[0002] When using a bone plate, it is generally necessary to use a drilling tool under X-ray guidance to drill holes in the broken bone to install screws to fix the bone plate. Usually, it is necessary to use a drill bit to drill holes at the proximal end and the distal end respectively, the proximal end is a sliding hole, and the distal end is a threaded hole;

[0003] Most existing drilling guide devices are sleeve-shaped. When used for proximal drilling, they can provide guidance for the drill bit and prevent the drill bit from damaging soft tissue. When used for distal drilling, a small sleeve needs to be replaced and inserted into the proximal hole to guide the drill bit to the distal hole.

[0004] However, when the drill bit makes a hole at the proximal end, the hole diameter is larger than the screw diameter. Since the small sleeve has to move in the proximal sliding hole, the outer side of the small sleeve cannot fully match the proximal sliding hole, and the central axis of the small sleeve is at an angle to the central axis of the sliding hole. Ultimately, the hole direction is inconsistent with the direction of the bone plate, requiring re-drilling or opening a hole on the opposite side. Summary of the invention

[0005] The purpose of the present invention is to provide an adjustable guide hole device for a fracture steel plate, so as to reduce the angle deviation of a small sleeve in a sliding hole and increase the success rate of drilling holes on the opposite side.

[0006] An adjustable guide hole device for a fracture plate comprises a bracket, an adjusting device and a guide hole sleeve, wherein the adjusting device is fixed on the outside of the bracket and can adjust the outer diameter of the guide hole sleeve, and the guide hole sleeve is arranged on the inside of the bracket to provide guidance for a drill bit to drill a threaded hole at the distal end of the fracture site.

[0007] Furthermore, the guide hole sleeve is provided with a penetrating opening in the axial direction.

[0008] Furthermore, it comprises a reference sleeve, and the guide hole sleeve is arranged in the reference sleeve.

[0009] Furthermore, the inner diameter of the reference sleeve is the same as the casing used for drilling the sliding hole, and the outer diameter of the guide hole sleeve is at most the same as the inner diameter of the casing used for drilling the sliding hole.

[0010] Furthermore, the adjusting device comprises a sliding sleeve, a claw petal and an adjusting ring.

[0011] Furthermore, a screw rod is provided between the sliding sleeve and the reference sleeve.

[0012] Furthermore, the outer portion of the adjustment ring is provided with anti-slip grooves.

[0013] Furthermore, the inner surface of the guide hole sleeve is coated.

[0014] Furthermore, the coating layer is a photosensitive resin.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows:

[0016] The outer diameter of the guide hole sleeve is adjustable through a guide hole sleeve with an incomplete ring and an adjusting device; a reference sleeve with the same inner diameter as the casing used for drilling a sliding hole is used as the maximum reference for the outer diameter of the guide hole sleeve, and the guide hole sleeve is placed inside it, so that the guide hole sleeve only needs to be adjusted smaller, thereby reducing the range required for adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the regulating structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the guide hole sleeve structure of the present invention;

[0021] Figure 5 Schematic diagram of the internal structure of the guide hole sleeve of the present invention

[0022] Among them, 1. bracket; 101. handle; 102. reference sleeve; 2. adjustment device; 201. sliding sleeve; 202. screw; 203. claw; 204. adjustment ring; 3. guide hole sleeve; 301. opening; 302. coating. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] like Figure 1-5As shown, the present invention proposes an adjustable guide hole device for a fracture plate, comprising a bracket 1, an adjusting device 2, and a guide hole sleeve 3, wherein the adjusting device 2 is fixed on the outside of the bracket 1 and can adjust the outer diameter of the guide hole sleeve 3, and the guide hole sleeve 3 is arranged on the inner side of the bracket 1 to guide the drill bit to drill a threaded hole at the distal end of the fracture site.

[0027] The bracket 1 includes a handle 101. When drilling, the handle 101 needs to be held at a certain angle so that the guide hole sleeve 3 can enter the sliding hole. When the diameter of the guide hole sleeve 3 is larger than the sliding hole, the outer diameter of the guide hole sleeve 3 can be reduced by the adjustment device 2.

[0028] Similarly, when the diameter of the guide hole sleeve 3 is smaller than the sliding hole, the outer diameter of the guide hole sleeve 3 can be increased by the adjusting device 2.

[0029] The inner diameter of the reference sleeve 102 is the same as that of the casing used for drilling a sliding hole. Therefore, the outer diameter of the guide hole sleeve 3 installed inside the reference sleeve 102 is the same as the inner diameter of the casing used for drilling a sliding hole.

[0030] The adjusting device 2 comprises a sliding sleeve 201 which is slidably arranged on the reference sleeve 102 . A threaded hole is arranged on the sliding sleeve 201 . The screw rod 202 passes through the threaded hole to fix the sliding sleeve 201 on the reference sleeve 102 .

[0031] The claw flap 203 is arranged below the sliding sleeve 201 and has a thread on the outside. The claw flap 203 can be retracted inwards or expanded outwards;

[0032] The adjusting ring 204 is arranged on the outside of the claw flap 203, and a thread matching with the claw flap 203 is arranged inside the adjusting ring 204. When the adjusting ring 204 rotates, it will move upward or downward, thereby causing the claw flap 203 to contract or expand.

[0033] Preferably, anti-slip grooves are also provided on the outside.

[0034] The guide hole sleeve 3, after entering the sliding hole, can guide the drill rod for drilling the threaded hole, so that the threaded hole at the distal end is consistent in direction with the sliding hole, and thus consistent in direction with the hole position on the bone plate.

[0035] The guide hole sleeve 3 is provided with a through opening 301 in the axial direction. The opening 301 makes the guide hole sleeve 3 incomplete in the circumferential direction. When subjected to external pressure, it is easy to shrink. Therefore, when the adjusting ring 204 is rotated, the claw petal 203 shrinks inwards, which makes the guide hole sleeve 3 also shrink inwards, resulting in a change in the outer diameter of the guide hole sleeve 3.

[0036] Preferably, the inside of the guide hole sleeve 3 is further provided with a coating 302. When the outer diameter of the guide hole sleeve 3 is adjusted, the inner diameter of the guide hole sleeve 3 will also change accordingly. When the inner diameter of the guide hole sleeve 3 is too large, the coating can be applied inside to reduce the inner diameter.

[0037] Preferably, the coating 302 is a photosensitive resin. After the outer diameter of the guide hole sleeve 3 is adjusted, the photosensitive resin is evenly applied to the inside thereof for multiple times and then irradiated with UV light to make it cure quickly, thereby reducing the inner diameter of the guide hole sleeve 3 to reduce the deviation of the drill bit angle.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable guide hole device for a fracture plate, characterized in that: The invention comprises a support (1), an adjustment device (2) and a guide hole sleeve (3), wherein the adjustment device (2) is fixed on the outside of the support (1) and is capable of adjusting the outer diameter of the guide hole sleeve (3); the guide hole sleeve (3) is arranged on the inside of the support (1) and is used to provide a guide for a drill bit to drill a threaded hole at the distal end of the fracture site; The guide hole sleeve (3) is provided with a penetrating opening (301) in the axial direction; It comprises a reference sleeve (102), wherein the guide hole sleeve (3) is arranged inside the reference sleeve (102); The inner diameter of the reference sleeve (102) is the same as the casing used for drilling the sliding hole, and the outer diameter of the guide hole sleeve (3) is at most the same as the inner diameter of the casing used for drilling the sliding hole; The adjusting device (2) comprises a sliding sleeve (201), a claw flap (203) and an adjusting ring (204); A screw rod (202) is provided between the sliding sleeve (201) and the reference sleeve (102); The claw flap (203) is arranged below the sliding sleeve (201) and has a thread on the outside. The claw flap (203) can be retracted inwards or expanded outwards; The adjusting ring (204) is arranged on the outside of the claw flap (203), and has a thread inside thereof that matches the claw flap (203).

2. The adjustable guide hole device for fracture plate according to claim 1, characterized in that: The exterior of the adjusting ring (204) is provided with anti-slip grooves.

3. The adjustable guide hole device for fracture plate according to any one of claim 2, characterized in that: The inner surface of the guide hole sleeve (3) is coated with a coating (302).

4. The adjustable guide hole device for fracture plate according to claim 3, characterized in that: The coating (302) is a photosensitive resin.

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