CN210249992U - Bone cutter for ultrasonic surgical system - Google Patents

Abstract

The utility model discloses a bone cutter for ultrasonic surgery system. The osteotome comprises: a knife body and a knife head. The knife body is divided into a front section and a rear section, and the knife head is arranged at the head end of the knife body. The front section is connected with the cutter head, the sectional area of the front section is in a decreasing trend along the direction from the tail end to the head end of the cutter body, the cutter head is in a sheet shape and is provided with two opposite cutting edge surfaces, the two cutting edge surfaces are symmetrical about the axis of the cutter head, and a plurality of cutter teeth are arranged on each cutting edge surface. According to the utility model discloses a bone cutter, the cutting effect is good, sets up a plurality of sword teeth that the size reduces gradually on the tool bit, can progressively reduce bone cutter's fatigue stress, prevents bone cutter because of stress concentration rupture, and then can prolong its life.

Description

Bone cutter for ultrasonic surgical system

Technical Field

The utility model belongs to the technical field of medical instrument and specifically relates to a cut bone knife 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 cutter has fewer types, can not meet the surgical requirements, and in the using process, the cutter head and the rear end of the cutter head are easily broken due to stress concentration, so that the normal use of the cutter is influenced.

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 present invention is to provide a bone cutter for an ultrasonic surgical system, wherein the bone cutter has a good cutting effect, and a plurality of cutter teeth with gradually decreasing size are arranged on a cutter head, so as to gradually reduce the fatigue stress of the bone cutter, prevent the bone cutter from being broken due to stress concentration, and further prolong the service life of the bone cutter.

According to the utility model discloses a cut bone knife for ultrasonic surgery system, include: a knife body and a knife head. The knife body is divided into a front section and a rear section, and the knife head is arranged at the head end of the knife body. The front section is connected with the cutter head, the sectional area of the front section is in a decreasing trend along the direction from the tail end to the head end of the cutter body, the cutter head is in a sheet shape and is provided with two opposite cutting edge surfaces, the two cutting edge surfaces are symmetrical about the axis of the cutter head, and a plurality of cutter teeth are arranged on each cutting edge surface.

Furthermore, the cutter teeth are semicircular cutter teeth, and the radius of the semicircular cutter teeth on each cutter edge surface is in a decreasing trend in the direction from the head end to the tail end of the cutter body.

Further, the radius of the cutter teeth is linearly decreased in the direction from the head end to the tail end of the cutter head.

Further, the difference between the radius of each cutter tooth and the radius of the cutter tooth adjacent to the cutter tooth near the tail end of the cutter body is one of 0.04mm-0.06 mm.

Further, a plurality of the cutter teeth are continuously distributed along the cutter edge face.

Further, the cutter teeth with the same radius on the two cutting edge surfaces are symmetrically distributed about the axis of the cutter head.

Further, the cutter tooth with the largest radius on one of the cutter edge surfaces is connected with the cutter tooth with the largest radius on the other cutter edge surface at the head end of the cutter head.

Further, the front section includes: the tool bit comprises a first stage and a second stage, wherein the first stage is connected with the tool bit, the second stage is connected with the rear section, and the first stage is connected with the second step section through arc surface transition.

Furthermore, the length of the first stage and the length of the second stage are both 2.0mm-4.0mm, the thickness of the first stage is 1.0mm-1.5mm, the thickness of the second stage is 1.5mm-2.5mm, and the length of the arc surface in the axial direction of the knife body is 1.2mm-2.8 mm.

Further, the width of the cutter head is in a decreasing trend from the tail end of the cutter body to the head end of the cutter body.

Compared with the prior art, bone knife, the cutting effect is good, set up a plurality of sword teeth that the size reduces gradually on the tool bit, can progressively reduce bone knife's fatigue stress, prevent bone knife because of stress concentration rupture, and then can prolong its life.

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 bone cutter for use in an ultrasonic surgical system according to an embodiment of the present invention;

fig. 2 is a top view of a bone cutter for use in an ultrasonic surgical system according to an embodiment of the present invention.

Reference numerals:

the bone cutting knife comprises a bone cutting knife 100, a knife body 1, a front section 11, a first stage 111, a second stage 112, a rear section 12, a knife head 2, a knife edge surface 21, knife teeth 3 and an arc surface 4.

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.

A bone cutting blade 100 for an ultrasonic surgical system according to an embodiment of the present invention is described below with reference to fig. 1-2. As shown in fig. 1, the osteotome 100 according to the embodiment of the present invention includes: a knife body 1 and a knife head 2. Preferably, the blade body 1 is formed integrally with the cutting head 2, thereby greatly simplifying the manufacturing process. Further, the knife body 1 is divided into a front section 11 and a rear section 12, and the knife head 2 is arranged at the head end of the knife body 1. Further, the front section 11 is connected with the cutter head 2, the sectional area of the front section 11 is gradually decreased from the tail end to the head end of the cutter body 1, the cutter head 2 is sheet-shaped, the cutter head 2 is provided with two oppositely-arranged cutting edge surfaces 21, the two cutting edge surfaces 21 are symmetrical about the axis of the cutter head 2, and each cutting edge surface 21 is provided with a plurality of cutter teeth 3.

According to the utility model discloses bone cutter 100, cutting speed is fast, and the cutting effect is good. Meanwhile, the cutter teeth 3 of the cutter head 2 are constructed in a size gradually reduced form, so that the fatigue stress of the osteotome 100 can be gradually reduced, the osteotome 100 is prevented from being broken due to stress concentration, the service life of the osteotome 100 is further prolonged, and meanwhile, the cutter head 2 with the cutter teeth 3 on both sides is adopted, so that the surgical cutting efficiency is effectively improved, and the surgical time is saved.

Further, the cutter teeth 3 are semicircular cutter teeth 3, and the radius of the semicircular cutter teeth 3 on each cutter edge surface 21 is in a decreasing trend in the direction from the head end to the tail end of the cutter body 1. Further, because the closer the position of the cutter head 2 to the cutter body 1, the greater the stress, the structure of the cutter teeth 3 with the size gradually reduced from the head end to the tail end of the cutter body 1 is adopted, and the fracture phenomenon caused by the stress concentration at the rear end of the cutter head 2 can be effectively avoided.

According to an embodiment of the present invention, as shown in fig. 1, the radius of the cutter teeth 3 decreases linearly in the direction from the head end to the tail end of the cutter head 2. That is, the radii of the cutter teeth 3 form an arithmetic progression.

Specifically, the radius of every sword tooth 3 and rather than the difference value of the radius of the sword tooth 3 of adjacent being close to blade 1 tail end be one of them value in 0.04mm-0.06mm, for example can be 0.05mm, in the utility model discloses an embodiment, wherein the radius of the sword tooth 3 that the radius is the biggest is 0.6mm, and the radius of the sword tooth 3 that the radius is the smallest is 0.3mm, and the radius that lies in sword tooth 3 between the two is 0.55mm, 0.5mm, 0.45mm, 0.4mm, 0.35mm in proper order from big to little, promptly the utility model discloses a be provided with seven sword teeth 3 on the cutting edge face 21 of osteotome knife 100, adopt progressively degressive mode from this, can reduce the fatigue stress of tool bit 2 gradually, be favorable to promoting osteotome knife 100's life.

According to one embodiment of the invention, a plurality of teeth 3 are distributed continuously along the edge surface 21. In particular, the teeth 3 on the two edge faces 21 with the same radius are symmetrically distributed about the axis of the cutter head 2. Thereby facilitating the bidirectional cutting of medical staff and improving the cutting speed. Specifically, the largest-radius cutter tooth 3 on one of the cutter edge surfaces 21 is connected with the largest-radius cutter tooth 3 on the other cutter edge surface 21 at the head end of the cutter head 2. Thus, the osteotome 100 can have a larger cutting surface, which is beneficial to improving the operation efficiency and accelerating the operation process.

As shown in fig. 1, the front section 11 includes: a first stage 111 and a second stage 112. Further, a first stage 111 is associated with the cutter head 2 and a second stage 112 is associated with the rear section 12. Further, the first stage 111 and the tool bit 2, the second stage 112 and the rear section 12, and the first stage 111 and the second step section 112 may be in transition connection with each other by using the arc surface 4, so that the fracture from the connection between the tool bit 2 and the tool body 1 due to excessive stress during use can be prevented, and the service life of the osteotome 100 can be prolonged.

Further, the lengths of the first stage 111 and the second stage 112 are both 2.0mm-4.0mm, the thickness of the first stage 111 is 1.0mm-1.5mm, the thickness of the second stage 112 is 1.5mm-2.5mm, and the length of the arc surface 4 in the axial direction of the cutter body 1 is 1.2mm-2.8 mm. In this way, by configuring the front section 11 of the osteotome 100 to be in a stepped-type contracted form, the lifetime of the osteotome 100 can be greatly prolonged, and the stress concentration can be reduced more effectively, and the stress reduction is made extremely remarkable by the combination of the length and thickness parameters of the first stage 111 and the second stage 112 and the parameters of the arc surface 4, and the lifetime of the osteotome 100 is remarkably increased.

Further, the width of the cutter head 2 decreases from the tail end of the cutter body 1 to the head end. In some embodiments, the width of the cutting head 2 may be 2mm to 8 mm. Further, the width of the cutter head 2 is 4mm to 6mm, so that the strength of the osteotome 100 is ensured and the cutting effect is better. Alternatively, the cutter head 2 may be made of a titanium alloy material, so that the cutter head 2 has high strength and light weight, thereby facilitating the reduction of the weight of the entire osteotome 100.

In conclusion, according to the utility model discloses osteotome 100, the cutting effect is good, sets up a plurality of sword teeth that the size reduces gradually on the tool bit, can reduce osteotome's fatigue stress step by step, prevents osteotome because of stress concentration and break, and then can prolong its life.

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 bone cutter for an ultrasonic surgical system, comprising:

the knife body is divided into a front section and a rear section;

the cutter head is arranged at the head end of the cutter body,

the front section is connected with the cutter head, the sectional area of the front section is in a decreasing trend along the direction from the tail end to the head end of the cutter body, the cutter head is in a sheet shape and is provided with two opposite cutting edge surfaces, the two cutting edge surfaces are symmetrical about the axis of the cutter head, and a plurality of cutter teeth are arranged on each cutting edge surface.

2. The bone cutter for an ultrasonic surgical system according to claim 1, wherein the cutter teeth are semicircular cutter teeth, and the radius of the semicircular cutter teeth on each blade face is in a decreasing trend in a direction from the head end to the tail end of the blade body.

3. The bone cutter for an ultrasonic surgical system according to claim 1, wherein the radius of the cutter teeth decreases linearly in a direction from the head end to the tail end of the cutter head.

4. The bone cutter for an ultrasonic surgical system according to claim 1, wherein the difference between the radius of each blade tooth and the radius of the blade tooth adjacent thereto near the trailing end of the blade body is one of 0.04mm to 0.06 mm.

5. The bone cutter for an ultrasonic surgical system of claim 1 wherein a plurality of said teeth are continuously distributed along said blade facet.

6. The osteotome defined in claim 1 wherein said blade teeth on both said blade surfaces having the same radius are symmetrically disposed about an axis of said blade head.

7. The bone cutter for an ultrasonic surgical system according to claim 1 wherein the largest radius tooth on one of said blade facets is connected to the largest radius tooth on the other of said blade facets at the head end of said cutter head.

8. The osteotome defined in claim 1 wherein said anterior segment comprises: the tool bit comprises a first stage and a second stage, wherein the first stage is connected with the tool bit, the second stage is connected with the rear section, and the first stage is connected with the second step section through arc surface transition.

9. The osteotome defined in claim 8 wherein each of said first stage and said second stage has a length of 2.0mm to 4.0mm, said first stage has a thickness of 1.0mm to 1.5mm, said second stage has a thickness of 1.5mm to 2.5mm, and said arcuate surface has a length in the axial direction of said blade body of 1.2mm to 2.8 mm.

10. The osteotome defined in claim 1 wherein said blade head has a width that decreases in a direction from a trailing end of said blade body to a leading end of said blade body.

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