CN217853174U

CN217853174U - Sheet-shaped bone cutting ultrasonic knife

Info

Publication number: CN217853174U
Application number: CN202221271016.2U
Authority: CN
Inventors: 张毓笠; 周兆英; 罗晓宁
Original assignee: Beijing Sonicmed Technology Co ltd
Current assignee: Beijing Sonicmed Technology Co ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-11-22
Anticipated expiration: 2032-05-25

Abstract

The utility model provides a sheet bone cutting ultrasonic knife, which comprises a connecting part, a clamping part and a knife bar which are arranged from back to front in sequence, wherein the connecting part is provided with a thread and is used for connecting an ultrasonic generating device; 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 connecting end of the ultrasonic generating device under the driving of the external instrument; the cutter bar is integrally arranged in a sheet shape, and the front end of the cutter bar on the side of the cutting edge is provided with a cutting area which is provided with a plurality of cutting teeth. The sheet-shaped cutter bar of the sheet-shaped bone cutting ultrasonic cutter has the advantage of large cutting depth, and can flexibly cut the posterior vertebral body in a narrower space, so that the cutting efficiency is greatly improved; meanwhile, the cutter can effectively reduce the risk of injuring soft tissues such as nerves, blood vessels and the like in the operation process, thereby effectively reducing the amount of bleeding, reducing the operation risk and the operation difficulty and greatly shortening the postoperative recovery time.

Description

Sheet-shaped bone cutting ultrasonic knife

Technical Field

The utility model relates to an supersound bone surgery equipment technical field especially relates to a slice bone cutting supersound sword.

Background

When posterior vertebral body cutting is involved in laminectomy, the blade shaft of conventional ultrasonic blades currently in use is generally cylindrical. However, the cylindrical ultrasonic cutter bar is generally short in cutter head and insufficient in cutting depth, and rongeur and abrasive drilling operation needs to be combined when posterior vertebral body cutting is carried out, so that the operation is complex, the operation difficulty is high, and the time consumption is long. Meanwhile, the abrasive drill is very easy to cause damage to soft tissues such as nerve tissues and blood vessels in the operation, and has a large operation risk.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can be fine transmit the regional slice bone cutting supersound sword of front end cutting with supersound mechanical vibration effect for carry out nimble cutting to the back centrum in narrower and small space, thereby effectively promote the cutting efficiency of supersound cutter, this slice bone cutting supersound sword includes connecting portion, clamping part and cutter arbor, wherein:

the connecting part is arranged at the cutter tail and is provided with threads for connecting the ultrasonic generating device;

the clamping part is arranged between the connecting part and the cutter bar and is used for clamping an external instrument so as to tightly screw and connect the connecting part to the ultrasonic generating device;

the whole cutter bar is arranged in a sheet shape, the front end of the side of the cutter edge is provided with a cutting area, and the cutting area is provided with a plurality of cutting teeth.

In a specific implementation, the cutting area has a plurality of equally spaced notches to form a plurality of cutting teeth between each notch.

In a specific implementation, the notch is arc-shaped, triangular or trapezoidal.

In a specific implementation, the distance between the notches is less than or equal to 0.2 mm.

In specific implementation, the cross section of the cutter bar is rectangular.

In a specific implementation, the thickness of the cutter bar is 0.5 mm to 3 mm.

In specific implementation, the thickness of the blade side of the cutter bar is larger than that of the back side of the cutter bar, so that the cross section of the cutter bar is in an isosceles trapezoid shape.

In a specific implementation, the difference in thickness between the blade edge side and the blade back side is 0.1 mm to 0.5 mm.

In specific implementation, the thickness of the knife back is gradually increased along the extending direction of the knife back, so that the knife back is in an isosceles trapezoid shape.

In a specific implementation, the difference in thickness between the front end and the rear end of the blade back is 0.1 mm to 0.5 mm.

In specific implementation, the cutter bar is arranged in an arc shape along the extending direction of the cutter back.

In specific implementation, the width of the clamping part is larger than the thickness of the cutter bar, and the joint of the cutter bar and the clamping part is in arc transition.

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

The utility model provides a sheet bone cutting ultrasonic knife, which comprises a connecting part, a clamping part and a knife bar which are arranged from back to front in sequence, wherein the connecting part is provided with a thread and is used for connecting an ultrasonic generating device; 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 connecting end of the ultrasonic generating device under the driving of the external instrument; the cutter bar is integrally arranged in a sheet shape, the front end of the cutter edge side of the cutter bar is provided with a cutting area, and the cutting area is provided with a plurality of cutting teeth. This slice bone cutting ultrasonic knife is when carrying out vertebra plate decompression art that vertebra body was cut behind the vertebra, can effectually transmit the cutting region of ultrasonic mechanical vibration effect to the cutter arbor front end, and then makes the cutting of the light back vertebra that realizes of operator. The sheet-shaped cutter bar of the sheet-shaped bone cutting ultrasonic cutter has the advantage of large cutting depth, and can flexibly cut the posterior vertebral body in a narrower space, so that the cutting efficiency is greatly improved; meanwhile, the cutter can effectively reduce the risk of injuring soft tissues such as nerves, blood vessels and the like in the operation process, thereby effectively reducing the amount of bleeding, reducing the operation risk and the operation difficulty and greatly shortening the postoperative recovery time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts. In the drawings:

FIG. 1 is a schematic view of a laminar bone-cutting ultrasonic blade according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the cutting area of the blade according to one embodiment of the present invention;

FIG. 3 is a top view of an ultrasonic blade for cutting bone in a sheet form according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a blade bar having a rectangular cross-section according to one embodiment of the present invention;

fig. 5 is a top view of a laminar bone-cutting ultrasonic blade having an isosceles trapezoid shaped blade back according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a blade shaft having an isosceles trapezoid cross-section according to an embodiment of the present invention;

fig. 7 is a schematic view of a partial structure of the curved cutter bar according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

As shown in fig. 1, fig. 2 and fig. 3, the utility model provides a can be fine transmit the regional 110 slice bone cutting ultrasonic knife of front end cutting with supersound mechanical vibration effect for carry out nimble cutting to the back centrum in narrower and small space, thereby effectively promote the cutting efficiency of ultrasonic knife, this slice bone cutting ultrasonic knife includes connecting portion 300, clamping part 200 and cutter arbor 100, wherein:

the connecting part 300 is arranged at the cutter tail and is provided with threads for connecting an ultrasonic generating device;

the clamping portion 200 is disposed between the connecting portion 300 and the tool bar 100, and is used for clamping an external instrument, so as to screw and connect the connecting portion 300 to the ultrasonic generating device;

the cutter bar 100 is integrally arranged in a sheet shape, the front end of the cutter side is provided with a cutting area 110, and the cutting area 110 is provided with a plurality of cutting teeth 111.

In particular implementations, the cutting region 110 can be configured in a variety of embodiments. For example, as shown in fig. 1, the blade side of the tool bar 100 may be arranged in an arc shape, the cutting region 110 is arranged at the front end of the blade side along the extending direction of the tool bar 100, and further, the cutting region 110 may have a plurality of notches 112 arranged at equal intervals to form a plurality of cutting teeth 111 between the notches 112.

In particular implementations, the cutting area 110 and the gap 112 can be configured in a variety of embodiments. For example, as shown in fig. 1 and 2, the notch 112 may have a circular arc shape, a triangular shape, or a trapezoidal shape. Further, the circular arc notches 112 may have the same radius and the same pitch, so that the cutting region 110 has a plurality of cutting teeth 111 with the same shape.

In particular implementations, the spacing between the notches 112 can be configured in a variety of embodiments. For example, the spacing between each of the indentations 112 may be less than or equal to 0.2 millimeters. That is, the width of each cutting tooth 111 may be less than or equal to 0.2 mm, so that the cutting area 110 has a relatively excellent cutting effect, high cutting efficiency, and is convenient to operate.

In particular embodiments, the shape of the tool holder 100 may be configured in a variety of embodiments. For example, as shown in fig. 4, the cross section of the tool bar 100 is rectangular. The cross section is rectangular, namely the thickness of the blade side and the back side of the cutter bar 100 is the same, the cutter bar is convenient to process, and the blade side can also have higher strength and is not easy to damage in the operation. Further, the thickness of the cutter bar 100 having a rectangular cross section may be 0.5 mm to 3 mm. For another example, as shown in fig. 6, the blade side thickness of the blade bar 100 may be greater than the blade back side thickness, so that the cross section of the blade bar 100 has an isosceles trapezoid shape. Further, the difference in thickness between the blade edge side and the blade back side may be 0.1 mm to 0.5 mm.

In specific implementation, the thickness of the knife back can be set in various embodiments. For example, as shown in fig. 5, the thickness of the blade back may be gradually increased along the extending direction of the blade back, so that the blade back has an isosceles trapezoid shape. Further, the difference in thickness between the front end and the rear end of the blade back may be 0.1 mm to 0.5 mm.

As shown in fig. 5 and 6, the knife bar 100 with the cross section in the isosceles trapezoid shape or the knife back in the isosceles trapezoid shape can effectively prevent knife clamping, facilitate the operation of the doctor and improve the operation efficiency. Meanwhile, in one embodiment, the cross section and the shape of the knife back can be set to be isosceles trapezoid shapes, so that knife clamping is effectively avoided.

In particular embodiments, the shape of the tool holder 100 may be configured in a variety of embodiments. For example, as shown in fig. 7, the tool bar 100 may be disposed in an arc shape along the extending direction of the tool back. Specifically, the cutting region 110 at the front end of the cutter bar 100 can be bent towards the side relative to the cutter bar 100 body, so that the spinal cord can be conveniently wound around the cut vertebral body, the operation is convenient, and the operation efficiency is improved. Further, the angle of the arc-shaped bend can be actually adjusted according to the requirements of the operation.

In a specific implementation, the width of the clamping portion 200 is greater than the thickness of the tool bar 100, and as shown in fig. 1, 3 and 5, the joint between the tool bar 100 and the clamping portion 200 may have an arc transition. The arc transition structure is smooth, plays good guard action to the tissue when the operation, can effectively reduce the operation risk, promotes the operation success rate.

In specific implementation, the shape of the clamping portion 200 can be set in various ways. For example, as shown in fig. 1, 3 and 5, the cross section of the clamping portion 200 may be hexagonal. The hexagonal clamping portion 200 is similar to a nut in external shape, so that it can clamp and fix the tool by a clamping tool such as a wrench and drive the tool to rotate, and has convenient operation and strong connection stability.

In specific implementation, the overall length of the cutter bar 100 can be set according to actual needs, and various schemes are available, and the present application is not limited one by one.

In a specific implementation, the tool bar 100 includes a blade side and a back side, the cutting region 110 having a plurality of cutting teeth 111 is located on the blade side, and the blade side may be composed of an arc segment with an angle α and an inclined segment with an angle β with the axis of the tool bar 100.

To sum up, the ultrasonic blade for cutting bone provided by the utility model comprises a connecting part 300, a clamping part 200 and a cutter bar 100 which are arranged from back to front in sequence, wherein the connecting part 300 is provided with a thread for connecting an ultrasonic generating device; the clamping part is arranged between the connecting part 300 and the cutter bar 100 and is used for clamping an external instrument, and the connecting part 300 is screwed to the connecting end of the ultrasonic generating device under the driving of the external instrument; the cutter bar 100 is integrally formed in a sheet shape, and the cutting edge side front end of the cutter bar 100 has a cutting region 110, and the cutting region 110 is provided with a plurality of cutting teeth 111. When the laminar bone cutting ultrasonic knife is used for vertebral plate decompression surgery for cutting vertebral body behind vertebra, the ultrasonic mechanical vibration effect can be effectively transmitted to the cutting area 110 at the front end of the knife bar 100, and then an operator can easily cut the back vertebral body. The sheet-shaped cutter bar 100 of the sheet-shaped bone cutting ultrasonic knife has the advantage of large cutting depth, and can flexibly cut the posterior vertebral body in a narrower space, so that the cutting efficiency is greatly improved; meanwhile, the cutter can effectively reduce the risk of injuring soft tissues such as nerves, blood vessels and the like in the operation process, thereby effectively reducing the amount of bleeding, reducing the operation risk and the operation difficulty and greatly shortening the postoperative recovery time.

It is to be understood that the terminology used in the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention 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, and "a plurality" typically includes at least two, but does not exclude the presence of at least one.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

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

The words "if", as used herein may be interpreted as "at \8230; \8230whenor" when 8230; \8230when or "in response to a determination" or "in response to a monitoring", depending on the context. Similarly, the phrase "if it is determined" or "if it is monitored (a stated condition or event)" may be interpreted as "when determining" or "in response to determining" or "when monitoring (a stated condition or event)" or "in response to monitoring (a stated condition or event)", depending on the context.

In the embodiments of the present application, "substantially equal to", "substantially perpendicular", "substantially symmetrical", and the like mean that the macroscopic size or relative positional relationship between the two referred to features is very close to the recited relationship. However, it is clear to those skilled in the art that the positional relationship of the object is difficult to be exactly constrained at small scale or even at microscopic angles due to the existence of objective factors such as errors, tolerances, etc. Therefore, even if a slight point error exists in the size and position relationship between the two, the technical effect of the present application is not greatly affected.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good 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 good or system. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in articles of commerce or systems including such elements.

Finally, it should be noted that those skilled in the art will appreciate that the embodiments of the present invention present many technical details for the purpose of better understanding 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-described embodiments. Accordingly, in actual practice, various changes in form and detail may be made to the above-described embodiments without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a slice bone-cutting ultrasonic knife, its characterized in that, slice bone-cutting ultrasonic knife includes connecting portion (300), clamping part (200) and cutter arbor (100), wherein:

the connecting part (300) is arranged at the cutter tail and is provided with threads and used for connecting an ultrasonic generating device;

the clamping part (200) is arranged between the connecting part (300) and the cutter bar (100) and is used for clamping an external instrument so as to screw and connect the connecting part (300) to the ultrasonic generating device;

the cutter bar (100) is integrally arranged in a sheet shape, the front end of the side of the cutter edge is provided with a cutting area (110), and the cutting area (110) is provided with a plurality of cutting teeth (111).

2. The ultrasonic blade for bone cutting of sheet type according to claim 1, wherein the cutting region (110) has a plurality of notches (112) arranged at equal intervals to form a plurality of cutting teeth (111) between the notches (112).

3. The ultrasonic blade for bone cutting of sheet type according to claim 2, wherein the notch (112) has a circular arc shape, a triangular shape or a trapezoidal shape.

4. The ultrasonic blade for bone cutting of claim 2, wherein the spacing between the indentations (112) is less than or equal to 0.2 mm.

5. The ultrasonic blade for laminar bone cutting according to claim 1, characterized in that the cross section of the blade bar (100) is rectangular.

6. The ultrasonic blade for laminar bone cutting according to claim 5, characterized in that the blade bar (100) has a thickness of 0.5 mm to 3 mm.

7. The ultrasonic blade for chip osteotomy of claim 1, wherein a blade-side thickness of said blade bar (100) is greater than a blade-back-side thickness so that a cross section of said blade bar (100) has an isosceles trapezoid shape.

8. The ultrasonic blade for bone cutting of claim 7, wherein the difference in thickness between the blade side and the dorsal side is 0.1 mm to 0.5 mm.

9. The ultrasonic blade for cutting bone according to claim 7, wherein the thickness of the blade back is increased along the extending direction of the blade back so that the blade back has an isosceles trapezoid shape.

10. The ultrasonic blade for bone cutting of claim 9, wherein the difference in thickness between the front end and the rear end of the blade back is 0.1 mm to 0.5 mm.

11. The ultrasonic blade for bone cutting of sheet type according to claim 1, wherein the blade bar (100) is disposed in an arc shape along the extending direction of the blade back.

12. The ultrasonic blade for cutting bone as set forth in claim 1, wherein the width of the clamping portion (200) is greater than the thickness of the blade bar (100), and the junction between the blade bar (100) and the clamping portion (200) is in an arc transition.

13. The ultrasonic blade for bone cutting in sheet form of claim 12, characterized in that the cross section of the clamping portion (200) is hexagonal.