CN219480238U

CN219480238U - Ultrasonic cutter for lateral bone grinding

Info

Publication number: CN219480238U
Application number: CN202223539311.4U
Authority: CN
Inventors: 张毓笠; 周兆英; 罗晓宁
Original assignee: Beijing Sonicmed Technology Co ltd
Current assignee: Beijing Sumai Medical Technology Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-08-08
Anticipated expiration: 2032-12-29

Abstract

The utility model provides an ultrasonic cutter for laterally grinding bones, which comprises a connecting part, a clamping part, a cutter bar and a cutter head, wherein: the connecting part is arranged at the cutter tail and is used for connecting an ultrasonic transducer; the clamping part is arranged between the connecting part and the cutter bar and is used for clamping an external instrument so as to screw the connecting part to the ultrasonic transducer; the tool bit sets up in cutter arbor front end, including extension and cutting part: one end of the extension part is connected with the cutter bar, and the other end of the extension part is connected with the cutting part; the cutting part is in a sheet-shaped arrangement, and the inner side surface is attached and connected to the extending part, so that a plurality of cutting teeth at the top end of the cutting part vertically extend out of the cutter head body. The ultrasonic cutter provides a cutting part with lateral tooth bone grinding, so that an operator can vertically operate the ultrasonic cutter, and the operation risk is effectively reduced; the cutter can be used in combination with the existing ultrasonic orthopaedics equipment, is used for the excision operation of lateral bone cement, osteophyte and ossified ligament, and can well transmit the ultrasonic mechanical vibration effect to the lateral cutting part.

Description

Ultrasonic cutter for lateral bone grinding

Technical Field

The utility model relates to the technical field of ultrasonic bone surgery equipment, in particular to an ultrasonic cutter for laterally grinding bones.

Background

At present, when performing vertebral body operations such as lumbar stenosis dilatation and cervical stenosis decompression, lateral bone cement, osteophytes and ossified ligaments are required to be cut, however, the conventional bone grinding in the prior art is usually provided with teeth at the top end, and the cutter still needs to be inclined at a certain angle when performing lateral cutting, so that the space required by the operations is larger, and the problems of easy damage to non-cutting surfaces and the like exist.

Disclosure of Invention

The utility model provides an ultrasonic cutter for lateral bone grinding, which is characterized in that a cutter bar does not need to incline when the cutter is used for lateral bone grinding, the cutter bar is easy to operate, the visual field is good, the required operation space is small, the ultrasonic cutter for lateral bone grinding comprises a connecting part, a clamping part, the cutter bar and a cutter head which are sequentially arranged, wherein:

the connecting part is arranged at the cutter tail and is used for connecting an ultrasonic transducer; the clamping part is arranged between the connecting part and the cutter bar and is used for clamping an external instrument, so that the connecting part is screwed and connected with the ultrasonic transducer;

the cutter head is arranged at the front end of the cutter bar and comprises an extension part and a cutting part; one end of the extension part is connected with the cutter bar, and the other end of the extension part is connected with the cutting part; the cutting part is in a sheet-shaped arrangement, and the inner side surface of the cutting part is in fit connection with the extension part, so that a plurality of cutting teeth at the top end of the cutting part vertically extend out of the cutter head body.

In specific implementation, the outer end surface of the cutting part is arranged in a plane or is provided with a plurality of groove bodies.

In a specific implementation, the cutting part is in a fan-shaped arrangement.

In a specific implementation, the top end of the cutting part is arc-shaped or linear.

In a specific implementation, the thickness of the cutting part is 0.5 mm to 3 mm.

In specific implementation, the cutter bar and the extension part are all in columnar arrangement.

In specific implementation, a transition part is arranged between the cutter bar and the extension part, and the transition part is an inclined plane or an arc surface so as to enable the cutter bar to smoothly transition with the extension part.

In a specific implementation, the top end of the cutting part is provided with a plurality of grooves so as to form a plurality of cutting teeth between the grooves.

In a specific implementation, the length of the extension portion is 2 mm to 200 mm.

In a specific implementation, the outline of the clamping part is arranged in a hexagonal shape.

In a specific implementation, the connecting part is a threaded connecting part.

The utility model provides an ultrasonic cutter for laterally grinding bones, which comprises a connecting part, a clamping part, a cutter bar and a cutter head which are sequentially arranged, wherein: the connecting part is arranged at the cutter tail and is used for connecting an ultrasonic transducer; the clamping part is arranged between the connecting part and the cutter bar and is used for clamping an external instrument so as to screw the connecting part to the ultrasonic transducer; the tool bit sets up in cutter arbor front end, including extension and cutting part: one end of the extension part is connected with the cutter bar, and the other end of the extension part is connected with the cutting part; the cutting part is in a sheet-shaped arrangement, and the inner side surface is attached and connected to the extending part, so that a plurality of cutting teeth at the top end of the cutting part vertically extend out of the cutter head body. The ultrasonic cutter for laterally grinding bones provides the cutting part of the laterally toothed bone grinding, when lateral bone removal is carried out, an operator can vertically operate the ultrasonic cutter without inclining a cutter bar, the ultrasonic cutter can reach an affected part, the operation is convenient, and the operation risk can be effectively reduced; the cutter can be used in combination with the existing ultrasonic orthopaedics equipment, is used for the excision operation of lateral bone cement, osteophyte and ossified ligament, and can well transmit the ultrasonic mechanical vibration effect to the lateral cutting part. Simultaneously, the cutting part is in a sheet-shaped arrangement, so that the end face of the top end of the cutter head is a plane, and the ultrasonic cutter can be prevented from drawing wires on a non-cutting surface in the swinging process, thereby greatly reducing the occurrence rate of medical accidents.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, it will be apparent that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:

FIG. 1 is a schematic view of an ultrasonic blade used for lateral bone grinding in accordance with one embodiment of the present utility model;

FIG. 2 is a side view of an ultrasonic blade for lateral bone grinding in accordance with one embodiment of the present utility model;

FIG. 3 is a schematic view of a cutting portion with a linear tip according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a cutting portion with an arc-shaped tip according to an embodiment of the present utility model;

fig. 5 is a schematic view showing the structure of the outer end face of a cutting part having a groove body according to an embodiment of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the following detailed description of the present utility model will be made with reference to the accompanying drawings. The exemplary embodiments of the present utility model and the descriptions thereof are used herein to explain the present utility model, but are not intended to limit the utility model.

As shown in fig. 1 and 2, in the process of implementing the present utility model, considering that a conventional bone grinding cutter has cutting teeth at the top end of a cutter head 1 and the front end of a cylinder, when lateral bone removal is performed, a cutter bar 2 needs to be inclined by a certain angle, and a required operation space is large, and a non-cutting surface is easy to be damaged, so that an ultrasonic cutter for lateral bone grinding is provided, when the cutter performs lateral bone grinding, the cutter bar 2 does not need to be inclined, is easy to operate, has a good visual field, and requires a small operation space, and the ultrasonic cutter for lateral bone grinding comprises a connecting part 4, a clamping part 3, the cutter bar 2 and the cutter head 1 which are sequentially arranged, wherein:

the connecting part 4 is arranged at the cutter tail and is used for connecting an ultrasonic transducer; the clamping part 3 is arranged between the connecting part 4 and the cutter bar 2 and is used for clamping an external instrument, so that the connecting part 4 is screwed and connected with the ultrasonic transducer;

the tool bit 1 is arranged at the front end of the tool bar 2 and comprises an extension part 12 and a cutting part 11;

one end of the extension part 12 is connected with the cutter bar 2, and the other end is connected with the cutting part 11;

the cutting part 11 is arranged in a sheet shape, and the inner side surface of the cutting part 11 is attached to the 5 extending part 12, so that a plurality of cutting teeth 11b at the top end of the cutting part 11 vertically protrude to the outside of the cutter head 1 body.

In practice, the shape of the outer end face 11a of the cutting portion 11 may be variously set. For example, as shown in FIG. 5, the outer end face 11a of the cutting portion 11 may be provided in a planar arrangement or arrangement

There are several grooves 11c. When the outer end face 11a is provided with a plurality of groove bodies 11c, the ultrasonic cutter can cut the top end at the same time when the cutting end performs lateral 0 cutting.

In practice, the overall shape of the cutting portion 11 may be provided in a variety of embodiments. For example, as shown in fig. 3 and 4, the cutting portion 11 may be provided in a fan shape, the bottom of the fan shape is connected to the extension portion 12, and the top of the fan shape may be used for cutting, and in addition, for facilitating the cutting operation, the included angle of the fan surface of the cutting portion 11 may be 30 ° to 180 °.

5 in the embodiment, the shape of the tip of the cutting portion 11 may be variously set. For example, the number of the cells to be processed,

as shown in fig. 4, the tip of the cutting portion 11 may be curved, and as shown in fig. 3, for example, the tip of the cutting portion 11 may be linear.

In practice, the thickness of the cutting portion 11 may be varied in arrangement. For example, the thickness of the cutting portion 11 may be 0.5 mm to 3 mm.

0, the shape of the shank 2 and the extension 12 of the cutting head 1 may be provided in a variety of embodiments. For example, to facilitate the insertion of the knife into the patient, and to improve safety, the knife bar 2 and the extension 12 may each be provided in a cylindrical shape, as shown in fig. 1. Meanwhile, as shown in fig. 1 and 2, in order to avoid the patient from being scratched at the joint, the knife bar 2 and the extension 12 are also connected with each other

A transition portion 13 may be provided, and the transition portion 13 may be inclined or curved to smoothly transition between the cutter bar 5 2 and the extension portion 12.

In practice, there may be various embodiments of the arrangement of the tip cutting teeth 11b of the cutting portion 11. For example, the tip of the cutting part 11 may have a plurality of grooves to form a plurality of cutting teeth 11b between the grooves. Further, the arrangement of the groove shape may have various embodiments. For example, as shown in fig. 3, 4 and 5, the grooves may be circular arc-shaped, and for example, the grooves may also be triangular or trapezoidal. The radius of the circular arc-shaped groove, the side length of other shapes and the angle are all variable within a certain range, and the size of the groove spacing determines the sharpness of the cutting tooth 11b. The smaller the spacing, the sharper the cutting teeth 11b.

In particular embodiments, the length of the extension 12 may be provided in a variety of ways. For example, the extension 12 may have a length of 2 mm to 200 mm.

In practice, the profile of the clamping portion 3 may have a variety of embodiments when provided. For example, as shown in fig. 1, the outer contour of the clamping portion 3 may be disposed in a hexagonal shape, so as to facilitate clamping of the tool and facilitate installation.

In specific implementations, there may be various connection modes of the connection portion 4. For example, the connecting part 4 is a threaded connecting part, so that the threaded connection between the cutter and the ultrasonic transducer is realized, and the ultrasonic transducer is not only tightly connected, but also convenient and quick to install.

In summary, the ultrasonic cutter for lateral bone grinding provided by the utility model comprises a connecting part 4, a clamping part 3, a cutter bar 2 and a cutter head 1 which are sequentially arranged, wherein: the connecting part 4 is arranged at the cutter tail and is used for connecting an ultrasonic transducer; the clamping part 3 is arranged between the connecting part 4 and the cutter bar 2 and is used for clamping an external instrument so as to screw the connecting part 4 to the ultrasonic transducer; the tool bit 1 is arranged at the front end of the tool bar 2 and comprises an extension part 12 and a cutting part 11: one end of the extension part 12 is connected with the cutter bar 2, and the other end is connected with the cutting part 11; the cutting part 11 is in a sheet shape, and the inner side surface is attached to the extension part 12, so that a plurality of cutting teeth 11b at the top end of the cutting part 11 vertically protrude to the outside of the cutter head 1 body. The ultrasonic cutter for lateral bone grinding provides the cutting part 11 of the lateral toothed bone grinding, when lateral bone removal is carried out, an operator can vertically operate the ultrasonic cutter for lateral bone grinding, the operator can reach an affected part without inclining the cutter bar 2, the operation is convenient, and the operation risk can be effectively reduced; the cutter can be used in combination with the existing ultrasonic orthopaedics equipment, is used for the excision operation of lateral bone cement, osteophyte and ossified ligament, and can well transmit the ultrasonic mechanical vibration effect to the lateral cutting part. Meanwhile, the cutting part 11 is arranged in a sheet shape, so that the top end face of the cutter head 1 is a plane, and therefore, the ultrasonic cutter can be prevented from drawing wires on a non-cutting surface in the swinging process, and the occurrence rate of medical accidents is greatly reduced.

It is to be understood that the terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only, and is not intended to be limiting of the utility model. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present utility model to describe certain elements, these elements should not be limited to only these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of embodiments of the present utility model.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to monitoring", depending on the context. Similarly, the phrase "if determined" or "if monitored (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when monitored (stated condition or event)" or "in response to monitoring (stated condition or event), depending on the context.

In the embodiments of the present application, "substantially equal to", "substantially perpendicular to", "substantially symmetrical", and the like, means that the macroscopic dimensional or relative positional relationship between the two features referred to is very close to the relationship described. However, it is clear to those skilled in the art that the positional relationship of the object is difficult to be precisely constrained on a small scale or even at a microscopic angle due to the existence of objective factors such as errors, tolerances, and the like. Therefore, even if the dimensional and positional relationship between the two have slight errors, the realization of the technical effect of the application is not greatly influenced.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.

Finally, it should be noted that those skilled in the art will understand that many technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be basically implemented without these technical details and various changes and modifications based on the above embodiments. Accordingly, in actual practice, various changes may be made in the form and details of the above-described embodiments without departing from the spirit and scope of the utility model.

Claims

1. An ultrasonic cutter for lateral bone grinding, which is characterized by comprising a connecting part (4), a clamping part (3), a cutter bar (2) and a cutter head (1) which are sequentially arranged, wherein:

the connecting part (4) is arranged at the cutter tail and is used for connecting an ultrasonic transducer; the clamping part (3) is arranged between the connecting part (4) and the cutter bar (2) and is used for clamping an external instrument, so that the connecting part (4) is screwed and connected with the ultrasonic transducer;

the cutter head (1) is arranged at the front end of the cutter bar (2) and comprises an extension part (12) and a cutting part (11); one end of the extension part (12) is connected with the cutter bar (2), and the other end is connected with the cutting part (11); the cutting part (11) is arranged in a sheet shape, and the inner side surface of the cutting part (11) is attached and connected to the extension part (12), so that a plurality of cutting teeth (11 b) at the top end of the cutting part (11) vertically extend out of the cutter head (1) body.

2. Ultrasonic blade for lateral bone grinding according to claim 1, characterized in that the outer end face (11 a) of the cutting portion (11) is arranged in a plane or is provided with a number of grooves (11 c).

3. Ultrasonic blade for lateral bone grinding according to claim 1, characterized in that the tip of the cutting portion (11) is curved or rectilinear.

4. Ultrasonic blade for lateral bone grinding according to claim 1, characterized in that the thickness of the cutting portion (11) is 0.5 to 3 mm.

5. Ultrasonic blade for lateral bone grinding according to claim 1, characterized in that the blade bar (2) and the extension (12) are both arranged in a cylindrical shape.

6. Ultrasonic blade for lateral bone grinding according to claim 5, characterized in that a transition (13) is provided between the blade bar (2) and the extension (12), the transition (13) being inclined or cambered to provide a smooth transition between the blade bar (2) and the extension (12).

7. Ultrasonic blade for lateral bone grinding according to claim 1, characterized in that the tip of the cutting portion (11) has grooves to form cutting teeth (11 b) between the grooves.

8. Ultrasonic blade for lateral bone grinding according to claim 1, characterized in that the extension (12) has a length of 2 to 200 mm.

9. Ultrasonic blade for lateral bone grinding according to claim 1, characterized in that the contour of the clamping portion (3) is arranged in a hexagonal shape.

10. Ultrasonic blade for lateral bone grinding according to claim 1, characterized in that the connection (4) is a threaded connection.