CN210249989U - Conical bone knife for ultrasonic surgical system - Google Patents

Abstract

The utility model discloses a toper bone knife for ultrasonic surgery system, toper bone knife includes: a knife body and a knife head. The cutter head is arranged at the head end of the cutter body, the cutter head is a cone, and a plurality of bone grinding teeth are arranged on the outer surface of the cutter head. According to the utility model discloses a toper bone knife grinds bone effectual, can reduce the fatigue stress of bone knife greatly, prevents to grind bone knife because of stress concentration frequent rupture, prolongs the life of bone knife greatly.

Description

Conical bone knife for ultrasonic surgical system

Technical Field

The utility model belongs to the technical field of medical instrument and specifically relates to a toper bone knife that grinds for ultrasonic surgery system is related to.

Background

With the rapid development of modern medicine, the ultrasonic surgical instrument is increasingly applied to the treatment of clinical surgical operation, the ultrasonic surgical instrument applies ultrasonic energy to the surgical operation, has the characteristics of fine cutting, safety, tissue selectivity, low-temperature hemostasis and the like, greatly enriches the means of the surgical operation, improves the quality of the surgical operation, and relieves the pain of patients to a certain extent. However, the traditional ultrasonic bone knife has few types and cannot meet the requirements of operations.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a toper bone knife for ultrasonic surgery system, toper bone knife grinds the bone effectual, can reduce the fatigue stress of bone knife greatly, prevents to grind bone knife because of stress concentration frequent rupture, prolongs the life of bone knife greatly.

According to the utility model discloses a toper bone knife for ultrasonic surgery system, include: a knife body and a knife head. The cutter head is arranged at the head end of the cutter body, the cutter head is a cone, and a plurality of bone grinding teeth are arranged on the outer surface of the cutter head.

According to the conical bone knife of the embodiment of the utility model, the conical angle of the cone is 50-70 degrees.

Further, the diameter of the large end of the cone is 3.5mm-4.5 mm.

According to the utility model discloses toper bone knife, it is a plurality of the bone grinding tooth is in arrange along circumference in proper order on the surface of tool bit.

Furthermore, the plurality of bone grinding teeth are radially distributed by taking the circle center of the free end face of the cutter head as the center.

Further, each of the bone grinding teeth has a tip end, and the tip end points to the circle center.

Further, the blade body includes: the cutter head is arranged at the head end of the front section, and the radial size of the front section is smaller than that of the rear section.

Further, the radial dimension of the front section is 2.2mm-2.7mm, and the axial dimension of the front section is one sixth to one fifth of the axial dimension of the cutter body.

Further, the cutter head is connected with the front section through an arc transition surface.

Further, the curvature radius of the arc-shaped transition surface is 0.8mm-1.2 mm.

According to the utility model discloses a toper bone knife for ultrasonic operation system grinds bone effectual, can reduce the fatigue stress of bone knife greatly, prevents to grind bone knife because of stress concentration frequent rupture, prolongs the life of bone knife greatly.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a front view of a tapered osteotome for use in an ultrasonic surgical system in accordance with an embodiment of the present invention;

FIG. 2 is a right side view of a tapered osteotome for use in an ultrasonic surgical system in accordance with an embodiment of the present invention;

fig. 3 is a schematic view of a tool bit structure according to an embodiment of the present invention.

Reference numerals:

100-conical bone grinding knife, 1-knife body, 11-front section, 12-rear section, 13-middle section, 14-end surface, 15-step section, 16-flat section, 17-connecting section, 18-tool withdrawal groove, 19-first connecting end, 2-knife head, 21-bone grinding tooth, 22-tip end and 3-arc transition surface.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

A tapered osteotome 100 for an ultrasonic surgical system in accordance with an embodiment of the present invention is described below with reference to fig. 1-3. As shown in fig. 1, a tapered osteotome 100 according to an embodiment of the present invention may include: a knife body 1 and a knife head 2. Specifically, the blade body 1 is integrally formed with the tool bit 2, thereby greatly simplifying the manufacturing process. The cutter head 2 is arranged at the head end of the cutter body 1, the cutter head 2 is constructed as a cone, and a plurality of bone grinding teeth 21 are arranged on the outer surface of the cutter head 2. Therefore, through the design of the bone grinding teeth 21, the full contact between the cutter head 2 and the focus is facilitated, the bone grinding effect is greatly improved, and the operation time is shortened. In the description of the present invention, "a plurality" means two or more.

According to the utility model discloses a toper bone knife 100 for ultrasonic surgery system grinds bone effectually, can reduce the fatigue stress of toper bone knife 100 greatly, prevents that toper bone knife 100 from frequently breaking because of stress concentration, prolongs the life of toper bone knife 100 greatly.

According to the tapered osteotome 100 of the present invention, as shown in fig. 3, the taper angle of the cone is 50 ° -70 °, and the diameter of the large end of the cone is 3.5mm-4.5 mm. For example, in a prior embodiment, the cone angle of the cone may be 60 ° and the diameter of the cone may be 4 mm. Further, the plurality of bone grinding teeth 21 are sequentially arranged on the outer surface of the cutter head 2 along the circumferential direction, and the plurality of bone grinding teeth 21 are radially distributed with the center of the circle of the free end face of the cutter head 2 as the center. Further, each burr 21 has a tip 22, the tip 22 pointing towards the center of the circle. Therefore, on one hand, the bone knife 100 is prevented from being frequently broken due to stress concentration, on the other hand, medical staff can quickly clean the focus, and the working efficiency is improved. In the description of the present invention, "a plurality" means two or more.

Further, as shown in fig. 1, the blade body 1 may include: the cutting head comprises a front section 11 and a rear section 12, wherein the cutting head 2 is arranged at the head end of the front section 11, and the radial dimension of the front section 11 is smaller than that of the rear section 12. Alternatively, the radial dimension of the forward section 11 may be between 2.2mm and 2.7mm, for example, in a prior embodiment, the radial dimension of the forward section 11 may be 2.5mm and the radial dimension of the aft section 12 may be 5 mm. Further, the axial dimension of the front section 11 is one sixth to one fifth of the axial dimension of the blade body 1. For example, in the prior art embodiment, the axial dimension of the front section 11 may be 10mm, and the axial dimension of the blade 1 may be 51.5 mm. Further, the front section 11 and the rear section 12 may be connected by an intermediate section 13. Thus, the fatigue stress of the tapered osteotome 100 can be effectively reduced by the stepped distribution of the blade body 1, and the service life of the tapered osteotome 100 is greatly prolonged. Further, the cutter head 2 is connected with the front section 11 through an arc transition surface 3, and the curvature radius of the arc transition surface 3 is 0.8mm-1.2 mm. For example, in a prior embodiment, the radius of curvature of the arcuate transition surface 3 may be 1.04 mm.

Further, as shown in fig. 1, in an embodiment of the present invention, the other end of the rear section 12 may be provided with a step portion 15, a flat portion 16 and a connecting portion 17. Specifically, the step portion 15 may include a plurality of stepped shafts, and the end surface 14 of the step portion 15 connected to the rear section 12 may be provided with a certain curvature, and further, the diameter of the step portion 15 is 6.5mm to 7.5 mm. For example, in a prior embodiment, the step 15 may be 7mm in diameter. The embodiment of the utility model provides an in, step 15 has further reduced the stress concentration of blade 1, can make the fatigue stress evenly distributed of toper osteotome 100 open, has avoided causing the cracked phenomenon of toper osteotome 100 because of fatigue stress's concentration, has further improved the life of toper osteotome 100 from this. In the description of the present invention, "a plurality" means two or more. Further, the flat 16 has an external hexagonal shape that can be obtained by milling, and the flat 16 facilitates the medical staff to mount the knife to an ultrasonic handle (not shown), thereby facilitating the mounting of the tapered osteotome 100. In the prior embodiment, the length of the flat portion 16 in the horizontal direction may be 5 mm. Further, the connecting portion 17 is used for connecting the tapered osteotome 100 to the ultrasonic handle, and in one embodiment, the connecting portion 17 may be an external thread structure having a diameter of substantially 5mm, which is simple and reliable. When the tapered osteotome 100 is to be mounted or dismounted, an operator only needs to screw the flat part 16 at the tail end of the scalpel body 1 by a wrench, so as to drive the screw-in or screw-out of the screw thread part, and the mounting of the tapered osteotome 100 can be easily completed. Of course, the connection mode of the tapered osteotome 100 and the ultrasonic handle is not limited to the threaded connection, and may be riveting or clamping fixation. Further, the method is carried out. The front end surface of the connecting portion 17 may be provided with an annular relief 18, the relief 18 being connected by a first connecting end 19 and a step portion 15. Thus, the medical staff can fix the cutter on the ultrasonic handle firmly, and the spherical osteotome 100 can be disassembled conveniently and quickly.

In an embodiment of the present invention, the tool bit 2 may be made of titanium alloy, so that the tool bit 2 has high strength and light weight, thereby facilitating the reduction of the weight of the whole taper osteotome 100.

In conclusion, according to the conical bone-grinding knife 100 for the ultrasonic surgical system provided by the embodiment of the present invention, the bone-grinding effect is good, the fatigue stress of the conical bone-grinding knife 100 can be greatly reduced, the conical bone-grinding knife 100 is prevented from being frequently broken due to stress concentration, and the service life of the conical bone-grinding knife 100 is greatly prolonged.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A tapered osteotome for an ultrasonic surgical system, comprising:

a blade body;

the bone grinding knife comprises a knife body and a knife head, wherein the knife head is arranged at the head end of the knife body and is constructed into a cone, and a plurality of bone grinding teeth are arranged on the outer surface of the knife head.

2. The tapered osteotome defined in claim 1 wherein said cone has a cone angle of between 50 ° and 70 °.

3. The tapered osteotome defined in claim 1 wherein said cone has a major end diameter of between 3.5mm and 4.5 mm.

4. The tapered osteotome defined in claim 1 wherein said plurality of said osteotome teeth are circumferentially disposed in sequence on said outer surface of said blade.

5. The tapered osteotome defined in claim 1 wherein said plurality of osteotome teeth are radially spaced about a center of said free end surface of said blade portion.

6. The tapered osteotome defined in claim 5 wherein each said osteotome tooth has a tip, said tip being directed toward said center of said circle.

7. The tapered osteotome defined in claim 1 wherein said blade body comprises: the cutter head is arranged at the head end of the front section, and the radial size of the front section is smaller than that of the rear section.

8. The tapered osteotome defined in claim 7 wherein said forward section has a radial dimension of between 2.2mm and 2.7mm and an axial dimension of between one sixth and one fifth of an axial dimension of said blade body.

9. The tapered osteotome defined in claim 7 wherein said blade tip is connected to said anterior segment by an arcuate transition surface.

10. The tapered osteotome defined in claim 9 wherein said arcuate transition surface has a radius of curvature of from 0.8mm to 1.2 mm.

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