CN213129767U - Ultrasonic section tool bit under mirror - Google Patents

Abstract

The utility model discloses an ultrasonic section tool bit under mirror, including connecting portion, cutter arbor and the tool bit that links to each other in proper order, and tool bit, cutter arbor and connecting portion design as integrated into one piece, the tool bit includes tool bit extension and tool bit head, and tool bit extension is connected with the cutter arbor, and the pointed end of tool bit head is the circular arc cutting edge to pass through circular arc inclined plane transition, the both sides of tool bit head are provided with the craspedodrome cutting edge that is on a parallel with the cutter arbor, the utility model discloses a tool bit head of ultrasonic section tool bit under mirror adopts convex and craspedodrome structure, and its main function is excision osseous tissue all around. Under the restriction of the diameter and the length of the endoscope channel, the bone tissue around the front end of the working tube is effectively cut off, so that the ultrasonic osteotome can exert the maximum efficiency.

Description

Ultrasonic section tool bit under mirror

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an ultrasonic section tool bit under mirror.

Background

The working principle of the ultrasonic osteotome is that the electric energy is converted into the mechanical energy through the piezoelectric conversion device, the ultrasonic osteotome head is in the high-frequency ultrasonic oscillation of a specific range, so that water in the contacted tissue cells is vaporized, and protein hydrogen bonds are broken, thereby thoroughly destroying the bone tissue to be removed. Meanwhile, the special working frequency of the ultrasonic osteotome has good soft and hard tissue identification capability, and can effectively reduce the damage to peripheral soft tissues, blood vessels and nerves. In an orthopedic surgery, a situation that a necrotic bone needs to be cut, sawed, and the like is often encountered, and a general operation is to mount a scalpel on a surgical device, and then a doctor controls the scalpel through the surgical device to perform cutting work on an affected part of a patient. As shown in fig. 5, in the prior art, a scalpel body of a scalpel for cutting and sawing bones in a surgical operation includes a back and a head, and the head is in a sawtooth shape, so that a doctor needs to use a large force to operate the scalpel, and the scalpel is inconvenient to operate and has low efficiency.

The under-mirror ultrasonic osteotome combines the characteristics of a minimally invasive endoscope technology and ultrasound, and realizes ultrasonic oscillation of bone tissues by means of an instrument channel of a surgical endoscope, thereby further effectively improving the safety of orthopedic surgery. However, the maximum inner diameter of an instrument channel of the surgical endoscope is usually small, the diameter of a working channel is usually 2-9mm, the length of the whole channel is usually longer and is more than 20cm, and when a cutter head of the ultrasonic osteotome extends into an endoscope, the cutter head cannot be transversely rotated in the working channel of the endoscope to a large extent due to the influence of an ultrasonic principle, so that the operation space is very limited. The user can only stretch out and draw back along the working tube direction, can not get rid of the bone tissue around the working tube front end, restricts the supersound osteotome and exerts maximum efficiency.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides an ultrasonic section tool bit under mirror mainly solves the problem in the background art.

The utility model provides an ultrasonic section tool bit under mirror, including connecting portion, cutter arbor and the cutter head that links to each other in proper order, just cutter head, cutter arbor and connecting portion design as integrated into one piece, the cutter head includes cutter head extension segment and tool bit head, the cutter head extension segment with the cutter arbor is connected, the most advanced of tool bit head is the circular arc cutting edge to pass through the transition of circular arc inclined plane, the both sides of tool bit head be provided with and be on a parallel with the straight line cutting edge of cutter arbor.

The improved structure is characterized in that the head part of the cutter head is designed to be a polygonal plane, and the joint of the head part of the cutter head and the extension section of the cutter head is in transition through an arc inclined plane.

The further improvement is that a plurality of annular bulges and cylindrical bulges are alternately arranged on the rod body of the cutter rod.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the cutter bar and the cutter head are in a complete connection structure, so that the cutter bar and the cutter head are not easy to break or fragment to invade body tissues in use, and the service life of the under-mirror ultrasonic slicer cutter head is prolonged due to the integrally formed structure.

2. In the prior operation process of cutting or sawing bones, the head part of the cutter head is in a sawtooth shape, so that a doctor needs to use great force to cut and saw bones during operation, the operation is inconvenient, and the efficiency is low. The utility model discloses an ultrasonic section tool bit under mirror only needs to start the supersound sword at the operation in-process of cutting or saw bone, and the slicing knife can cut, has improved work efficiency greatly, and labour saving and convenient again.

3. The head of the most front end of the cutter body of the under-mirror ultrasonic slicing cutter head is designed into a circular arc shape, so that the bony tissue can be cut forwards and backwards, and the heads of the cutter heads on the two sides are designed into a straight line and can be cut leftwards and rightwards.

4. The head of the knife body is of a rectangular plane structure, so that peripheral soft tissues, blood vessels and nerves of a patient can be better protected in the operation process.

5. The head of the cutter head and the extension section of the cutter head are in arc slope transition, the transition can enhance the strength of the slicing cutter head, the service life is prolonged, and meanwhile surrounding tissues can be protected from being injured.

6. The annular bulge of the cutter bar is used as a zero vibration point space ring, so that the friction on an endoscope instrument channel can be reduced, and the output efficiency is improved.

7. The head of the cutter head of the endoscopic ultrasonic section cutter head adopts a circular arc and straight structure, and the main function of the cutter head is to cut off bony tissues front, back, left and right. Under the restriction of the diameter and the length of the endoscope channel, the bone tissue around the front end of the working tube is effectively cut off, so that the ultrasonic osteotome can exert the maximum efficiency.

Drawings

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Fig. 1 is a schematic partial structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of a tool bit according to an embodiment of the present invention;

fig. 3 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 4 is a schematic plan view of a tool bit according to an embodiment of the present invention;

FIG. 5 is a schematic plan view of a surgical osteotome in the prior art;

wherein: 1. a cutter head; 11. a head portion of the cutter head; 1011. a circular arc blade; 1012. a straight blade; 1013. a circular arc inclined plane; 12. a cutter head extension section; 2. a cutter bar; 21. a cylindrical protrusion; 22. an annular projection; 3. a connecting portion.

Detailed Description

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art. The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Referring to fig. 1-4, an ultrasonic section tool bit under mirror, including consecutive connecting portion 3, cutter arbor 2 and tool bit 1, just tool bit 1, cutter arbor 2 and connecting portion 3 design for integrated into one piece, tool bit 1 includes tool bit extension 12 and tool bit head 11, tool bit extension 12 with tool bit 2 is connected, the most advanced of tool bit head 11 is circular arc cutting edge 1011 to pass through circular arc inclined plane 1013 transition, the both sides of tool bit head 11 are provided with and are on a parallel with the straight line cutting edge 1012 of tool bit 2.

As a preferred embodiment of the utility model, tool bit head 11 is polygonal planar design, tool bit extension 12 with tool bit head 11 junction passes through the transition of circular arc inclined plane, the soft tissue, blood vessel and nerve around the protection operation patient that can be better.

As a preferred embodiment of the present invention, a plurality of annular protrusions 22 and cylindrical protrusions 21 are alternately disposed on the shaft of the cutter bar 2, the cylindrical protrusions 21 are designed to meet the overall property requirement of the cutter bar 2, and the main function is to ensure that the resonant frequency of the cutter bar 2 and the multiplying power of the cutter bar 2 meet the use requirement.

In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (3)

1. The utility model provides an ultrasonic section tool bit under mirror, its characterized in that, including connecting portion (3), cutter arbor (2) and tool bit (1) that link to each other in proper order, just tool bit (1), cutter arbor (2) and connecting portion (3) design as integrated into one piece, tool bit (1) include tool bit extension (12) and tool bit head (11), tool bit extension (12) with cutter arbor (2) are connected, the pointed end of tool bit head (11) is circular arc cutting edge (1011) to pass through circular arc inclined plane (1013) transition, the both sides of tool bit head (11) are provided with and are on a parallel with straight line cutting edge (1012) of cutter arbor (2).

2. The under-mirror ultrasonic microtome head according to claim 1, wherein the head (11) is of polygonal planar design, and the junction of the head (11) and the head extension (12) is in transition by means of a circular arc bevel.

3. An under-mirror ultrasonic slicer head as claimed in claim 1, characterized in that a plurality of annular protrusions (22) and cylindrical protrusions (21) are alternately provided on the shank of the blade holder (2).

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