Flat bone drill

Abstract

The flat bone drill of the present invention comprises: a drill rod (1) and a drill bit (2), wherein the drill bit (2) is at one end of the drill rod (1), and the drill bit (2) is two drill blades (5) extending from one end of the drill rod (1), and the two drill blades (5) are symmetrically distributed relative to the center line of the drill rod (1), and the upper and lower ends of the drill blades (5) at a certain distance from the ends of the drill blades (5) are respectively provided with distance measuring blocks (4) perpendicular to the center line of the drill rod (1). The end of the flat bone drill of the present invention is flat in shape, which can effectively avoid the fascia and muscles of the subcutaneous tissue and will not cause unnecessary damage to the fascia and muscles; the bone residue cut by the flat bone drill of the present invention can be guided out from the grooves formed between the drill blades, and during the surgical operation, the doctor can see the distance measuring block on the display screen and timely understand the cutting depth of the flat bone drill of the present invention.

Description

Technical Field

[0001] The invention relates to a bone drill, in particular to a flat bone drill used for human body surgery. Technical Background

[0002] Existing bone drills are twist drill bits or spiral drill bits similar to those used to drill wood or iron plates. This type of drill bit is cylindrical. During the operation, the patient's skin and subcutaneous tissue must first be opened with a scalpel, and then the bone drill is inserted into the skin and subcutaneous tissue. After reaching the bone to be drilled, the motor drives the drill bit to rotate and drill the bone.

[0003] Existing bone drills have the following disadvantages:

[0004] 1. The end of the drill bit is cylindrical, which cannot effectively avoid the fascia and muscles of the subcutaneous tissue, and will cause damage to the fascia and muscles;

[0005] 2. The end of the drill bit is cylindrical. The bone debris cut by the bone drill can only be discharged through the groove formed by the spiral blade on the bone drill. In order to reduce the friction between the bone debris and the guide pin during the drilling process, if the bone debris cannot be discharged, the guide pin will be stuck by the bone debris and the inner hole of the bone drill. Sometimes, in order to discharge the bone debris in time, the doctor must reverse the drilling process to discharge the bone debris.

[0006] 3. Nowadays, most surgeries are performed under arthroscopy or similar surgical scopes. During the operation, the doctor can only see the image received by the display screen, and the doctor cannot accurately estimate the depth of the bone drill. Summary of the invention

[0007] The invention of the present application aims to solve the problems existing in the existing bone drills and to provide a flat bone drill.

[0008] In order to achieve the invention purpose of this application, this application adopts the following technical solutions:

[0009] The flat bone drill of the present invention comprises: a drill rod and a drill bit, wherein the drill bit is at one end of the drill rod, wherein: the drill bit is two drill blades extending from one end of the drill rod, the two drill blades are symmetrically distributed around the center line of the drill rod, and the upper and lower ends of the drill blades at a certain distance from the ends of the drill blades are respectively provided with distance measuring stops perpendicular to the center line of the drill rod.

[0010] The present invention provides a flat bone drill, wherein: the drill blade is composed of an upper bevel, a lower bevel, a first side surface, a second side surface and a side bevel, the first side surface and the second side surface are parallel to each other and parallel to the center line of the drill bit, the upper bevel and the lower bevel are parallel to each other, they are respectively located at the upper end and the lower end of the first side surface and the second side surface, and the angle between them and the first side surface is 45° to 75°, the side bevel is an end surface surrounded by the upper bevel, the lower bevel, the first side surface and the second side surface, the angle between them and the first side surface is 60° to 80°, and the angle between them and the upper bevel is 110° to 130°.

[0011] The flat bone drill of the present invention, wherein: the drill rod and the drill bit are an integrated structure.

[0012] The flat bone drill of the present invention has three tightening surfaces along the circumferential direction on the outer circumference of the other end of the drill rod, and three claws of the motor clamp the three tightening surfaces to drive the drill rod to rotate.

[0013] The flat bone drill of the present invention has a guide wire hole at the center of the drill rod.

[0014] The flat bone drill of the present invention is made of 465 material specified by ASTM F899 standard.

[0015] Compared with the existing bone drills, the flat bone drill of the present invention has the following advantages:

[0016] 1. The flat bone drill of the present invention has a flat end, which can effectively avoid the fascia and muscles of the subcutaneous tissue and will not cause unnecessary damage to the fascia and muscles;

[0017] 2. The flat bone drill of the present invention has a flat end. The bone residue cut by the flat bone drill of the present invention can be guided out through the groove formed between the drill blades. During the bone drilling process, the doctor no longer needs to perform reverse drilling to guide the bone residue out.

[0018] 3. The flat bone drill of the present invention is designed with a distance measuring block. During the surgical operation, the doctor can see the distance measuring block on the display screen and timely understand the cutting depth of the flat bone drill of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic diagram of a flat bone drill according to the present invention, and for the sake of clarity, a partial cross-section view is used in the figure;

[0020] Figure 2 for Figure 1 Schematic diagram of the top view;

[0021] Figure 3 for Figure 1 Schematic diagram of the cross section at AA in the middle;

[0022] Figure 4 It is a three-dimensional enlarged schematic diagram of the drill blade.

[0023] exist Figures 1 to 4 In the figure, number 1 is the drill rod; number 2 is the drill bit; number 3 is the clamping surface; number 4 is the distance measuring stop; number 5 is the drill blade; number 6 is the upper inclined surface; number 7 is the side inclined surface; number 8 is the second side surface; number 9 is the first side surface; number 10 is the lower inclined surface; number 11 is the wire guide hole. DETAILED DESCRIPTION

[0024] like Figures 1 to 4 As shown, the flat bone drill of the present invention comprises: a drill rod 1 and a drill bit 2, the drill rod 1 and the drill bit 2 are an integrated structure, one end of the drill rod 1 is the drill bit 2, the drill bit 2 is two drill blades 5 extending from one end of the drill rod 1, the two drill blades 5 are symmetrically distributed around the center line of the drill rod 1, the drill blades 5 are composed of an upper bevel 6, a lower bevel 10, a first side surface 9, a second side surface 8 and a side bevel 7, the first side surface 9 and the second side surface 8 are parallel to each other and parallel to the center line of the drill bit 2, the upper bevel 6 and the lower bevel 10 are parallel to each other, and the upper bevel 6 and the lower bevel 10 are parallel to each other. 0 are parallel to each other, they are respectively located at the upper end and the lower end of the first side surface 9 and the second side surface 8, and the included angle with the first side surface 9 is 45° to 75°, the side bevel 7 is an end surface surrounded by the upper bevel 6, the lower bevel 10, the first side surface 9 and the second side surface 8, and the included angle with the first side surface 9 is 60° to 80°, and the included angle with the upper bevel 6 is 110° to 130°, and the upper and lower ends of the drill blade 5 at a certain distance from the end of the drill blade 5 are respectively provided with a distance measuring stop 4 perpendicular to the center line of the drill rod 1.

[0025] A guide wire hole 11 is provided at the center of the drill rod 1. Three clamping surfaces 3 are provided along the circumference of the other end of the drill rod 1. The three claws of the motor clamp the three clamping surfaces 3 to drive the drill rod 1 to rotate. The flat bone drill is made of 465 material specified in ASTM F899 standard.

[0026] During the operation, the doctor first opens the patient's skin and subcutaneous tissue with a scalpel, and then extends the flat bone drill of the present invention into the skin and subcutaneous tissue. Because the flat bone drill of the present invention is flat, the flat bone drill can avoid the fascia and muscle of the subcutaneous tissue. After reaching the bone to be drilled, the motor drives the drill bit to rotate to drill the bone. After reaching the drilling depth, the doctor can see the distance measuring block under the operating mirror and stop drilling in time.

[0027] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. The present invention may be modified in any form without violating the spirit of the present invention.

Claims

1. A flat bone drill, comprising: A drill rod (1) and a drill bit (2), wherein the drill bit (2) is at one end of the drill rod (1), and the drill bit (2) is two drill blades (5) extending from one end of the drill rod (1), the two drill blades (5) are symmetrically distributed around the center line of the drill rod (1), and the upper and lower ends of the drill blades (5) at a certain distance from the ends of the two drill blades (5) are respectively provided with distance measuring stops (4) perpendicular to the center line of the drill rod (1), characterized in that: the drill blade (5) is composed of an upper inclined surface (6), a lower inclined surface (10), a first side surface (9), a second side surface (8) and a side inclined surface (7), and the first side surface (9) and the second side surface (8) are respectively provided with a distance measuring stop (4) perpendicular to the center line of the drill rod (1). ) are parallel to each other and parallel to the center line of the drill bit (2); the upper bevel (6) and the lower bevel (10) are parallel to each other, and are respectively located at the upper end and the lower end of the first side surface (9) and the second side surface (8), and the angle between them and the first side surface (9) is 45° to 75°; the side bevel (7) is an end surface surrounded by the upper bevel (6), the lower bevel (10), the first side surface (9) and the second side surface (8); the angle between them and the first side surface (9) is 60° to 80°, and the angle between them and the upper bevel (6) is 110° to 130°; the flat bone drill is made of 465 material specified in ASTM F899 standard.

2. The flat bone drill according to claim 1, characterized in that: The drill rod (1) and the drill bit (2) are an integrated structure.

3. The flat bone drill according to claim 2, characterized in that: There are three clamping surfaces (3) along the circumferential direction of the other end of the drill rod (1) on the outer circumference, and the three claws of the motor clamp the three clamping surfaces (3) to drive the drill rod (1) to rotate.

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