Half-moon-shaped bone slice drill

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a half-moon-shaped bone slice drill which comprises a positioning rod and a cutting body, the positioning rod is fixedly connected with the cutting body through a locking nut, an outer cover is rotatably sleeved on the positioning rod, and an outer cover body is sleeved outside the outer cover in a threaded mode. According to the semilunar bone slice drill, the five parts are assembled into a whole, so that the semilunar bone slice drill is convenient to disassemble, convenient to produce and machine, and convenient to deeply clean the drill bit after clinical operation; the semilunar bone slice drill is made of hard medical stainless steel, is provided with a sharp and ultra-thin cutting edge and has excellent cutting efficiency, loss of autogenous bones during bone slice taking is reduced to the maximum extent, convenience and efficiency of an operation are greatly improved, a protective sleeve is arranged outside a bone slice taking rotor to prevent mucosa from being accidentally injured in the bone slice taking process, and the semilunar bone slice drill is safer and more efficient. Due to the hollow design of the bone slices and the protective sleeve, water cooling of the cutting area is greatly enhanced, and the quality and activity of the obtained bone slices are higher.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a crescent-shaped bone drill. Background Technology

[0002] Currently, the conventional methods for preparing autologous bone grafts on the market involve the following steps: (1. Obtaining autologous bone blocks. 2. Dividing the autologous bone blocks into bone slices of varying thicknesses (0.5-1.5mm) using a high-speed diamond abrasive disc handpiece). Regarding step one, obtaining autologous bone blocks from the oral cavity, the methods often include: 1. Cutting with a bone saw followed by a single-edged chisel. 2. Cutting with an ultrasonic bone scalpel followed by a single-edged chisel.

[0003] However, existing ultrasonic bone scalpels or micro-saws are relatively simple to use, and can easily cause accidental damage to the mucosa during bone fragment removal. They are also relatively cumbersome to operate, thus affecting the safety and efficiency of bone fragment removal. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art, such as the simple composition of ultrasonic bone scalpels or micro saws, the easy damage to the mucosa during bone fragment extraction, and the cumbersome operation. Therefore, a crescent-shaped bone fragment drill is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A crescent-shaped bone drill includes a positioning rod and a cutting body. The positioning rod and the cutting body are fixedly connected by a locking nut. An outer cover is rotatably sleeved on the positioning rod, and an outer cover body is threaded onto the outer cover.

[0007] Preferably, the positioning rod has a channel inside, and one end of the positioning rod located inside the cutting body has a through hole communicating with the channel.

[0008] Preferably, the cutting body is provided with a plurality of openings around its perimeter.

[0009] Preferably, one side of the outer cover is provided with a cutting opening corresponding to the cutting body, and the side of the outer cover away from the cutting opening is provided with multiple strip-shaped openings.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This invention features a crescent-shaped bone fragment drill, composed of five parts assembled into a single unit. This assembly facilitates disassembly, manufacturing, and post-operative cleaning of the drill bit. The drill is made of hard medical-grade stainless steel, possessing a sharp and ultra-thin cutting edge, resulting in excellent cutting efficiency while minimizing autologous bone loss during fragment harvesting. Compared to traditional ultrasonic bone scalpels or micro-saws used in BBA bone fragment harvesting, this significantly improves surgical convenience and efficiency. Furthermore, the external protective sleeve on the bone fragment prevents accidental mucosal injury during harvesting, enhancing safety and efficiency. The hollow design of the bone fragment and protective sleeve greatly enhances water cooling in the cutting area, resulting in higher quality and bioavailability of the harvested bone fragments. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a crescent-shaped bone drill proposed in this utility model;

[0013] Figure 2 This is a side sectional view of a crescent-shaped bone drill proposed in this utility model.

[0014] Figure 3 This is a schematic diagram of the structure of the positioning rod in a crescent-shaped bone drill according to the present invention;

[0015] Figure 4 This is a schematic diagram of the structure of the outer casing of a crescent-shaped bone drill according to the present invention.

[0016] In the diagram: 1. Positioning rod, 2. Cutting body, 3. Locking nut, 4. Outer cover, 5. Outer cover body. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figure 1-4 A crescent-shaped bone drill includes a positioning rod 1 and a cutting body 2. The positioning rod 1 has a channel inside, and one end of the positioning rod 1 located inside the cutting body 2 has a through hole communicating with the channel, which serves as a cooling function.

[0019] In this embodiment, the cutting body 2 is surrounded by multiple openings, the outer cover 5 is provided with a cutting opening corresponding to the cutting body 2 on one side, and the outer cover 5 is provided with multiple strip-shaped openings on the side away from the cutting opening.

[0020] In this embodiment, the positioning rod 1 and the cutting body 2 are fixedly connected by a locking nut 3. An outer cover 4 is rotatably sleeved on the positioning rod 1 to fix the outer cover 5. The outer cover 4 is threaded onto the outer cover 5 to provide protection.

[0021] In this embodiment, the crescent-shaped bone fragment drill uses hard medical-grade stainless steel, featuring a sharp and ultra-thin cutting edge, resulting in excellent cutting efficiency and minimizing autologous bone loss during bone fragment harvesting. Compared to traditional ultrasonic bone scalpels or micro-saws used for BBA bone fragment harvesting, it significantly improves the convenience and efficiency of the procedure. Furthermore, the external protective sleeve on the bone fragment prevents accidental mucosal injury during the harvesting process, making it safer and more efficient. The hollow design of the bone fragment and the protective sleeve greatly enhances water cooling in the cutting area, resulting in higher quality and activity of the obtained bone fragments.

[0022] In this embodiment, the crescent-shaped bone drill consists of five parts assembled into a single unit, which facilitates disassembly, manufacturing, and cleaning of the drill bit after clinical operation.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A crescent-shaped bone drill, comprising a positioning rod (1) and a cutting body (2), characterized in that: The positioning rod (1) and the cutting body (2) are fixedly connected by a locking nut (3). An outer cover (4) is rotatably sleeved on the positioning rod (1), and an outer cover body (5) is threaded onto the outer cover (4).

2. The crescent-shaped bone drill according to claim 1, characterized in that: The positioning rod (1) has a channel inside, and one end of the positioning rod (1) located inside the cutting body (2) has a through hole that communicates with the channel.

3. A crescent-shaped bone drill according to claim 1, characterized in that: The cutting body (2) is provided with multiple openings around it.

4. A crescent-shaped bone drill according to claim 1, characterized in that: The outer cover (5) has a cutting opening on one side corresponding to the cutting body (2), and the outer cover (5) has multiple strip-shaped openings on the side away from the cutting opening.

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