CN102475568B - Ultrasonic bone knife head - Google Patents

Abstract

The invention discloses an ultrasonic bone knife head which comprises a knife blade and a knife point. An included angle is formed between the longitudinal central axis of the knife blade and the longitudinal central axis of the knife point, a knife edge is arranged at the right front end of the knife point, and the center of the knife edge is located at the longitudinal central axis of the knife point. By adopting the technical scheme of the invention, the surgical field is broad and clear, the ultrasonic bone knife head is convenient for operation and use, the loaded capacity is strong, the cutting speed is increased, and the cutting quantity and the shape of the bone can be accurately controlled.

Description

A kind of ultrasonic osteotome bit

Technical field

The present invention relates to technical field of medical instruments, relate in particular to a kind of ultrasonic osteotome bit.

Background technology

In bone surgery, often use piezosurgery osteotomy to bone cut, grinding, planing, scraping or any reshaping.As shown in Figure 1, current ultrasonic osteotome bit is multiple tooth, has wider point of a knife part, and how point of a knife part is not effectively main cutting part.

There are the following problems for this ultrasonic osteotome bit: cutting speed is slow, and efficiency is low, and carrying load ability is poor, wastes energy; Easily fracture, service life is low; Complex-shaped, difficulty of processing is high, and production cost is high.

Summary of the invention

The object of the invention is to propose a kind of ultrasonic osteotome bit, surgical field of view is open clear, and convenient operation uses, and carrying load ability is powerful, improves cutting speed, and can accurately control cutting output and the shape to bone.

For reaching this object, the present invention by the following technical solutions:

A kind of ultrasonic osteotome bit, comprises blade and point of a knife, between the longitudinal central axis line of blade and the longitudinal central axis line of point of a knife, presents angle, and the positive front end of point of a knife arranges blade, the longitudinal central axis line that is centered close to point of a knife of described blade.

Angle between the longitudinal central axis line of blade and the longitudinal central axis line of point of a knife is that 0 degree is to 90 degree.

Angle between the longitudinal central axis line of blade and the longitudinal central axis line of point of a knife is that 10 degree are to 70 degree.

The thickness of described point of a knife is greater than the thickness of described blade.

Described blade is provided with circular groove shape.

Described blade is provided with triangular shaped.

Also comprise blade and connecting thread, blade one end connects blade, and one end is connected with connecting thread, and blade one end is thick cylinder, and one end is thin cylinder, middle by arc transition, and positive die nut position is set, and connecting thread is for being connected with ultrasonic transducer.

Adopted technical scheme of the present invention, carrying load ability is stronger, and deep efficiency is high, speed is fast, has reduced operating time, reduces patient's misery, reduces doctor's labor intensity; Because point of a knife has certain flexibility, surgical field of view is openr clear, and convenient operation uses more; Cutter head exquisiteness is small and exquisite, can accurately control cutting output and shape to bone, reduces the deep loss amount in art, accelerates patient's recovery time; In deep process, there is hemostasis blood coagulation effect, reduce intraoperative blood loss; Reduce difficulty of processing, reduced production cost.

Accompanying drawing explanation

Fig. 1 is the structural representation of ultrasonic osteotome bit in prior art scheme.

Fig. 2 is the structural representation of ultrasonic osteotome bit in the specific embodiment of the invention one.

Fig. 3 is the side schematic view of ultrasonic osteotome bit in the specific embodiment of the invention one.

Fig. 4 is the local structure for amplifying schematic diagram of ultrasonic osteotome bit in the specific embodiment of the invention two.

The specific embodiment

Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by the specific embodiment.

The main thought of technical solution of the present invention is in the planform of ultrasonic osteotome bit.Fig. 2 is the structural representation of ultrasonic osteotome bit in the specific embodiment of the invention one.Fig. 3 is the side schematic view of ultrasonic osteotome bit in the specific embodiment of the invention one.As shown in Figures 2 and 3, what this ultrasonic osteotome bit adopted is single main serrated knife point dissymmetrical structure, comprisesblade 1, point of aknife 2,blade 4 and connectingthread 5.

Between the longitudinal central axis line of blade and the longitudinal central axis line of point of a knife, present angle δ, angle δ be 0 degree to 90 degree, usual range be 10 degree to 70 degree, can expand like this surgical field of view, more convenient operation piezosurgery osteotomy.

Positive front end at point of a knife arrangesblade 3, the longitudinal central axis line that is centered close to point of a knife of blade, between blade center and edge, point of a knife both sides, be provided with circular groove shape on one side, another side is provided with triangular shaped, and the energy that this structure produces ultrasonic transducer all converges at the knife edge part (the most effective working portion) of ultrasonic osteotome bit, converges as a bit, make the knife edge part of cutter head there is the strongest energy output, reach the strongest working effect.

Blade one end connects blade, and one end is connected with connecting thread, and blade one end is thick cylinder, and one end is thin cylinder, middle by arc transition, and positive die nut position is set, and connecting thread is for being connected with ultrasonic transducer.The connecting thread of cutter head afterbody is connected with specific ultrasonic transducer, and tightens with corresponding spanner, then ultrasonic transducer is connected in to specific ultrasonic main frame, can carry out work.

Fig. 4 is the local structure for amplifying schematic diagram of ultrasonic osteotome bit in the specific embodiment of the invention two.As shown in Figure 4, the structure of the ultrasonic osteotome bit in the structure of this ultrasonic osteotome bit and the specific embodiment one is basically identical, and just the thickness a of point of a knife is greater than the thickness b of blade, passes through circular arc R transition between point of a knife and blade.

The width that point of a knife cuts out so in use is just greater than the thickness of blade, in operation process, just there will not be folder cutter stuck phenomenon while cutting the darker groove of thicker bone or cutting, window type otch.In addition, point of a knife thickness has greatly also increased point of a knife intensity, has relatively improved the service life of cutter head.

The above-mentioned one of only enumerating blade is shaped as example, in actual operation process, can, according to different needs, adopt difform blade.

Knife edge part can be all circular groove, and groove two ends are positioned at both sides, point of a knife edge.

Knife edge part can be also all gable.

Knife edge part can also be taked following shape:

On the longitudinal central axis line that is centered close to point of a knife of blade, between two edges of blade center and point of a knife, be all triangle, and at leg-of-mutton mid portion, circular groove be set.

On the longitudinal central axis line that is centered close to point of a knife of blade, between two edges of blade center and point of a knife, being triangle near blade core, is circular groove near point of a knife marginal portion.

On the longitudinal central axis line that is centered close to point of a knife of blade, between two edges of blade center and point of a knife, be all triangle, and at leg-of-mutton mid portion, two circular grooves be set.

On the longitudinal central axis line that is centered close to point of a knife of blade, between two edges of blade center and point of a knife, be all circular groove.

The above; be only the preferably specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any people who is familiar with this technology is in the disclosed technical scope of the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.

Claims (2)

1. a ultrasonic osteotome bit, comprise blade, point of a knife and blade, it is characterized in that, described blade point of a knife and blade sequentially form, angle between the longitudinal central axis line of described blade and the longitudinal central axis line of described point of a knife is that 10 degree are to 70 degree, the just front top of described point of a knife arranges described blade, and the longitudinal central axis line that is centered close to described point of a knife of described blade and the thickness of described point of a knife are greater than the thickness of described blade;

Wherein, between two edges of described blade center and described point of a knife, be all triangle, and at leg-of-mutton mid portion, circular groove be set; Or between two edges of described blade center and described point of a knife, being triangle near described blade core, is circular groove near described point of a knife marginal portion; Or between two edges of described blade center and described point of a knife, be all triangle, and at leg-of-mutton mid portion, two circular grooves be set; Or be all circular groove between the center of described blade and the two edges of point of a knife.

2. a kind of ultrasonic osteotome bit according to claim 1, it is characterized in that, also comprise blade and connecting thread, blade one end connects blade, and one end is connected with connecting thread, and blade one end is thick cylinder, one end is thin cylinder, middle by arc transition, and positive die nut position is set, connecting thread is for being connected with ultrasonic transducer.

Images