WO2019184783A1

WO2019184783A1 - Ultrasonic osteotome head

Info

Publication number: WO2019184783A1
Application number: PCT/CN2019/078884
Authority: WO
Inventors: 姜亮; 曹群; 战松涛
Original assignee: 江苏水木天蓬科技有限公司
Priority date: 2018-03-30
Filing date: 2019-03-20
Publication date: 2019-10-03
Also published as: CN208822875U

Abstract

Disclosed in the present invention is an ultrasonic osteotome head, comprising a grinding part positioned at the front end of the ultrasonic osteotome head, an osteotome body connected to a transducer, and an osteotome barrel used to connect the grinding part and the osteotome body. The grinding part has a trapezoidal structure, the long side of the trapezoidal structure of the grinding part forming the edge of the front end of the ultrasonic osteotome head, and the short side of the trapezoidal structure connecting to the osteotome barrel. The grinding part comprises a grinding face positioned on the upper side of the grinding part and a bottom face positioned on the lower side of the grinding part, the grinding face being provided with grinding grooves. When the ultrasonic osteotome head of the present invention is used in conducting subcutaneous decompression, osteophytes can be safely removed from deep inside the body without injuring the spinal cord. The ultrasonic osteotome head of the present invention offers a simple structure, easy processing, and flexibility in operation, and has broad application.

Description

Ultrasonic bone cutter head

Technical field

The present invention relates to the field of medical devices, and in particular to a scalpel, and more particularly to an ultrasonic bone cutter head.

Background technique

In modern society, with the development of medical technology, orthopedic surgery presents a diversified trend. Correspondingly, when performing surgery, it is necessary to use different scalpel heads for different orthopedic conditions to grind, cure, and clamp the affected area. Wait for the operation. In response to the special construction of bone structure, combined with the development of ultrasound technology in recent years, ultrasonic bone knife has gradually become the main tool for modern orthopedic surgery. In orthopedic surgery, the often used ultrasonic bone cutter is a spoon-shaped or spherical cutter head, but currently this type of cutter head is only suitable for surface thinning and bone scraping, and is not suitable for sneak decompression. Operation.

Summary of the invention

In view of the problems existing in the prior art, the present invention provides an ultrasonic bone cutter head comprising a grinding portion at a front end of an ultrasonic bone cutter head, a blade body coupled to the transducer, and a joint for grinding the blade portion and the blade body. The shank and the grinding portion have a trapezoidal structure, and the long side of the trapezoidal structure of the grinding portion forms an edge of the front end of the ultrasonic bone cutter head, and the short side of the trapezoidal structure is connected with the shank, and the grinding portion includes the grinding portion. The grinding surface on the upper side and the bottom surface on the lower side of the grinding portion are provided with grinding grooves on the grinding surface.

In the ultrasonic bone cutter head of the present invention, it is preferable that the long side and the side of the trapezoidal structure of the grinding portion have an arc-shaped transition.

In the ultrasonic bone cutter head of the present invention, it is preferable that the bottom surface of the grinding portion is a smooth bottom surface.

In the ultrasonic bone cutter head of the present invention, preferably, the grinding portion is bent upward with respect to the holder.

In the ultrasonic bone cutter head of the present invention, it is preferable that the grinding surface of the grinding portion has a circular arc surface and protrudes upward.

In the ultrasonic bone cutter head of the present invention, it is preferable that the grinding portion of the grinding portion has a smooth transition to the grinding surface of the grinding portion.

In the ultrasonic bone cutter head of the present invention, preferably, the grinding groove is a lateral groove opened in a direction perpendicular to the axis of the holder.

In the ultrasonic bone cutter head of the present invention, preferably, the surface of the grinding portion is formed as a guillotine surface, and the grinding groove is a sipe groove.

In the ultrasonic bone cutter head of the present invention, preferably, the cutter bar and the blade body are formed in a hollow structure, and a water injection hole is formed in the grinding portion.

In the ultrasonic bone cutter head of the present invention, preferably, the cutter body is provided with a wrench position for clamping.

The ultrasonic bone cutter head of the invention has the advantages of simple structure, convenient processing, flexible operation and wide application range. By using the ultrasonic bone cutter head of the present invention, it is possible to safely remove the deep deep skeleton of the inside without damaging the spinal cord during the sneak decompression operation. The cutter head has a good visual field of operation, safe and convenient operation, reduces the risk of surgery, and shortens the operation time.

DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following description of the drawings used in the specific embodiments or the description of the prior art will be briefly introduced, obviously, the attached in the following description The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

1 is a perspective view of an ultrasonic bone cutter head according to a first embodiment of the present invention;

2 is a top plan view of an ultrasonic bone cutter head according to a first embodiment of the present invention;

3 is a front elevational view showing an ultrasonic bone cutter head according to a first embodiment of the present invention;

4 is a perspective view of an ultrasonic bone cutter head according to a second embodiment of the present invention;

Fig. 5 is a top plan view of an ultrasonic bone cutter head according to a second embodiment of the present invention.

Reference mark:

1 to grinding section, 2 to shank, 3 to blade, 4 to long side, 5 to short side, 6 to side, 7 to grinding surface, 8 to bottom, 9 to grinding groove, and 10 to wrench.

detailed description

The technical solutions of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplified description, rather than indicating or implying that the device or component referred to has a specific orientation, in a specific orientation. The construction and operation are therefore not to be construed as limiting the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. 1 to 3 show an ultrasonic bone cutter head according to a first embodiment of the present invention. 1 is a perspective view of an ultrasonic bone cutter head according to a first embodiment of the present invention, FIG. 2 is a top plan view of an ultrasonic bone cutter head according to a first embodiment of the present invention, and FIG. 3 is an ultrasonic bone according to a first embodiment of the present invention. A schematic view of the cutter head. As shown in FIGS. 1 to 3, the ultrasonic bone cutter head according to the first embodiment of the present invention includes a grinding portion 1 at the front end of the ultrasonic bone cutter head, a blade body 3 connected to the transducer, and a grinding body for grinding. The blade 2 connected to the blade 1 and the blade body 3 has a trapezoidal structure, and the long side 4 of the trapezoidal structure of the grinding portion 1 forms the edge of the front end of the ultrasonic bone cutter head, and the trapezoidal structure of the grinding portion 1 The short side 5 is connected to the shank 2, and the grinding section 1 includes a grinding surface 7 on the upper side of the grinding section 1 and a bottom surface 8 on the lower side of the grinding section 1, and a grinding machine is provided on the grinding surface 7. Slot 9.

When performing the sneak decompression operation, the ultrasonic bone cutter head according to the first embodiment of the present invention can safely remove the deep internal iliac crest without damaging the spinal cord. At the same time, the front wide and rear narrow structure of the ultrasonic bone cutter head of the present invention allows the operator to observe the surgical position from the rear end without obstructing the visual field, greatly improving the reliability and safety of the surgical operation. The grinding surface 7 is the main working surface of the ultrasonic bone cutter head of the present invention, and the grinding groove 9 formed on the grinding surface 7 can maximize the energy generated by the ultrasonic transducer to be concentrated in the working part of the operation. The cutting edge of the tool has the strongest energy output for the strongest working effect.

As shown in FIGS. 1 to 3, the long side 4 and the side edge 6 of the trapezoidal structure of the grinding portion 1 of the ultrasonic bone cutter head according to the first embodiment of the present invention are transitioned in an arc shape. The structure with a circular arc transition can minimize the concentration of stress on one point, thus avoiding the damage of stress concentration on the body tissue.

In the ultrasonic bone cutter head according to the first embodiment of the present invention, the bottom surface 8 of the grinding portion 1 is a smooth bottom surface, thereby avoiding scratching of the soft tissue when the bottom surface 8 contacts the soft tissue.

As shown in Fig. 2, in the ultrasonic bone cutter head according to the first embodiment of the present invention, the grinding portion 1 may be bent upward with respect to the cutter bar 2, thereby facilitating the surgical operation to be wound around the spinal cord.

In the ultrasonic bone cutter head according to the first embodiment of the present invention, it is preferable that the grinding surface 7 of the grinding portion 1 has a circular arc surface and protrudes upward. The upwardly convex circular arc-shaped grinding surface 7 can be better contacted with the osteophytes that need to be ground for effective grinding.

In the ultrasonic bone cutter head according to the first embodiment of the present invention, as shown in Fig. 1, the bottom surface 8 of the grinding portion 1 smoothly transitions to the grinding surface 7 of the grinding portion 1, and the smooth transition structure is for the operator and the surgery. The patient has a good protective effect.

In the ultrasonic bone cutter head according to the first embodiment of the present invention, it is preferable that the grinding groove 9 is a lateral groove opened in a direction perpendicular to the axis of the holder 2. The opening direction of the lateral groove is perpendicular to the axial direction of the shank 2, and in a general surgical operation, the operator usually holds the ultrasonic bone knives to reciprocate in the axial direction of the shank 2. In this way, the lateral grooves repeatedly scrape the epiphyses alternately, so that the osteophytes can be effectively removed.

4 to 5 show an ultrasonic bone cutter head according to a second embodiment of the present invention. 4 is a perspective view of an ultrasonic bone cutter head according to a second embodiment of the present invention, and FIG. 5 is a top plan view of the ultrasonic bone cutter head according to the second embodiment of the present invention. As shown in FIG. 4 to FIG. 5, the ultrasonic bone cutter head according to the second embodiment of the present invention is substantially the same as the ultrasonic bone cutter head according to the first embodiment of the present invention, except that the ultrasonic method according to the second embodiment of the present invention is used. In the bone cutter head, the grinding surface 7 is formed like a trowel surface, and the grinding groove 9 is formed as a grooving groove, and the structural features of the groove of the grooving groove are more favorable for scraping the bone stalk from different directions. And it is more conducive to protecting tissues from accidental damage.

Further, in the ultrasonic bone cutter head according to the second embodiment of the present invention, the grinding groove 9 of the grinding surface 7 is not a structure in which only the lateral groove can be adopted, and any type of grinding structure capable of grinding the bone can be used. Both can be used as the shape of the grinding groove 9, such as a wave groove, a twill groove, and the like.

In the ultrasonic bone cutter head according to the second embodiment of the present invention, preferably, the blade body 3 is provided with a wrench bit 10 for holding the ultrasonic bone cutter head, thereby facilitating the operator to use the tool to apply the ultrasonic bone cutter of the present invention. The cutter head is screwed onto the transducer to increase the reliability of its work. Preferably, the number of the wrench bits 10 of the ultrasonic bone cutter head is an even number, and the two pairs are symmetrically arranged, so that the tools such as a wrench can be used for clamping and tightening. A thread (not shown) for connection to the transducer is provided on the blade body 3. The thread may be an external thread or an internal thread, and the ultrasonic bone cutter head of the present invention adopts an internal thread structure.

In the ultrasonic bone cutter head according to the first and second embodiments of the present invention, the cutter bar 2 may have a hollow structure, and a water injection hole (not shown) may be formed in a portion of the cutter bar 2 near the grinding portion 1. The rinse liquid is directly injected into the grinding section 1. A water injection hole can also be formed in the grinding portion 1. The ultrasonic cutter head has a hollow structure, and the grinding portion has a water injection hole to ensure that the perfusion liquid flows out from the portion of the cutter bar 2 near the grinding portion 1, and can fully inject water, and the entire cutter head and the contact are contacted during the operation. The tissue is completely in the cleaning and cooling of the perfusate in real time, which further reduces the risk of surgery and improves the safety and success rate of the operation.

Compared with the prior art, the embodiment of the invention has the advantages that the ultrasonic bone cutter head has the advantages of simple structure, convenient processing, flexible operation and wide application range. The use of the ultrasonic bone cutter head of the present invention can safely remove deep bones inside the spine without injuring the spinal cord. The grinding surface 7 is the main working surface of the ultrasonic bone cutter head of the present invention, and the grinding groove 9 formed thereon can maximize the concentration of ultrasonic energy in the grinding portion where the cutter head and the tissue are released. At the same time, the front and rear narrow structure of the ultrasonic bone cutter head of the present invention allows the operator to view the surgical field from the rear end without obstructing the visual field, thereby greatly improving the reliability and safety of the surgical operation.

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that the technical solutions described in the foregoing embodiments may be modified or equivalently substituted for some or all of the technical features. The modifications and substitutions of the present invention do not depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

An ultrasonic bone cutter head comprising a grinding portion at a front end of the ultrasonic bone cutter head, a blade body coupled to the ultrasonic transducer, and a knife bar connecting the grinding portion and the blade body, characterized Yes,

The grinding portion is a trapezoidal structure, and a long side of the trapezoidal structure of the grinding portion forms a front end edge of the ultrasonic bone cutter head, and a short side of the trapezoidal structure is connected to the cutter bar, the grinding The portion includes a grinding surface on an upper side of the grinding portion and a bottom surface on a lower side of the grinding portion, and a grinding groove is formed in the grinding surface.
The ultrasonic bone cutter bit according to claim 1, wherein

The long side and the side of the trapezoidal structure of the grinding portion have a circular arc transition.
The ultrasonic bone cutter head according to claim 1 or 2, wherein

The bottom surface of the grinding portion is a smooth bottom surface.
The ultrasonic bone cutter head according to claim 1 or 2, wherein

The grinding portion is bent upward relative to the arbor.
The ultrasonic bone cutter head according to claim 1 or 2, wherein

The ground surface of the grinding portion has a circular arc surface and protrudes upward.
The ultrasonic bone cutter bit according to claim 1, wherein

The bottom of the grinding portion smoothly transitions toward the grinding surface of the grinding portion.
The ultrasonic bone cutter head according to claim 1 or 2, wherein

The grinding groove is a lateral groove that is opened in a direction perpendicular to the axis of the shank.
The ultrasonic bone cutter head according to claim 1 or 2, wherein

The surface of the grinding portion is formed as a guillotine surface, and the grinding groove is a kneading groove.
The ultrasonic bone cutter head according to claim 1 or 2, wherein

The shank and the blade body are formed in a hollow structure, and a water injection hole is formed in the grinding portion.
The ultrasonic bone cutter head according to claim 1 or 2, wherein

The cutter body is provided with a wrench bit for clamping.