WO2018161773A1

WO2018161773A1 - Knife head for ultrasonic knife

Info

Publication number: WO2018161773A1
Application number: PCT/CN2018/075952
Authority: WO
Inventors: 孙宇; 周强; 战松涛; 曹群
Original assignee: 江苏水木天蓬科技有限公司
Priority date: 2017-03-10
Filing date: 2018-02-09
Publication date: 2018-09-13
Also published as: CN207707970U

Abstract

A knife head for an ultrasonic knife, comprising: a knife head end portion (1), a knife rod (2) and a knife body (3); an end of the knife rod (2) is connected to the knife head end portion (1), while another end of the knife rod (2) is connected to the knife body (3); the knife head end portion (1) comprises a cutting portion (11) and a connecting portion (12), wherein the cutting portion (11) is located at a front end of the knife head end portion (1), and the connecting portion (12) is connected to the knife rod (2), the connecting portion (12) having a cylindrical structure and bending at a certain angle toward one side relative to the knife rod (2).

Description

Ultrasonic cutter head

Technical field

The invention belongs to the technical field of medical instruments, and in particular relates to an ultrasonic knife 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 types of scalpel heads for cutting, grinding, scraping, clamping, etc. for different orthopedic conditions. In surgery, soft tissue, hard tissue, and human-like tissue are often used to perform punching operations. At present, the ultrasonic scalpel grinding head is a spoon-shaped or spherical cutter head, but at present, most of these cutter heads are mainly straight rod-shaped, and some anterior cervical spine operations such as medial epiphysis removal and ossification are performed. In the operation of ligament removal, most of these straight cutters are not competent.

Summary of the invention

In order to solve the above problems in the prior art, the present invention provides an ultrasonic cutter head including a cutter head end, a cutter bar and a blade body, one end of the cutter bar being coupled to the cutter tip end, the cutter The other end of the rod is coupled to one end of the blade body, wherein the tip end portion includes a cutting portion and a connecting portion, the cutting portion is located at a front end of the tip end portion, the connecting portion and the arbor The connection is cylindrical and curved at an angle to one side with respect to the shank.

In the ultrasonic blade head of the present invention, preferably, the cutting portion at the end portion of the tip is in the shape of a scraper.

In the ultrasonic blade head of the present invention, preferably, the end edge of the cutter head is upward and the bottom surface is a smooth circular arc plane.

In the ultrasonic blade head of the present invention, preferably, the upper side of the cutting portion of the tip end portion is provided with a toothed structure.

In the ultrasonic blade head of the present invention, preferably, the cutting portion of the tip end portion has a meander shape.

In the ultrasonic blade head of the present invention, preferably, the cutting portion of the tip end portion is knurled.

In the ultrasonic cutter head of the present invention, preferably, the cutter bar has a hollow structure, and the hollow portion extends up to the front end of the end portion of the cutter head, and the side of the cylindrical structure or the side of the cut portion at the end portion of the cutter head Or the front end has a water injection hole.

In the ultrasonic blade head of the present invention, preferably, a smooth transitional connection between the arbor and the blade end between the shank and the blade body is performed by a slope or a circular arc surface.

In the ultrasonic blade head of the present invention, preferably, the other end of the blade body is connected to a specific ultrasonic host through an ultrasonic transducer, and the other end of the blade body is provided with a connecting thread, and the connecting thread is an in-line connecting thread. Or externally connected threads.

In the ultrasonic blade head of the present invention, preferably, the blade body is further provided with a clamping surface.

In order to solve the above technical problems, the present invention adopts the following scheme:

The ultrasonic cutter head has the following beneficial effects:

(1) The ultrasonic cutter head of the present invention can concentrate all the energy generated by the ultrasonic transducer on the front end portion of the knife, so that the front end portion of the cutter has the strongest energy output to achieve the strongest working effect.

(2) Since the arbor is bent at a certain angle to one side, in some anterior cervical surgery, the medial epiphysis or ossified ligament can be conveniently removed, which increases the convenience and safety of the surgical operation.

(3) The ossified portion is removed by the upward squat structure, and since the contact area of the scorpion head is small but the force for grinding on the contact surface is relatively large, it is suitable for operation on a site with more ossification.

(4) The end of the cutter head with knurling structure is used for grinding, and the contact area is larger and smoother, so that a large-area bone grinding operation can be performed.

DRAWINGS

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

Figure 2 is a front elevational view of the ultrasonic blade head of the first embodiment of the present invention;

3 is a plan view showing an ultrasonic blade head of a first embodiment of the present invention having a hollow structure;

Figure 4 is a front elevational view showing the ultrasonic blade head of the first embodiment of the present invention having a hollow structure;

Figure 5 is a perspective view of an ultrasonic blade head according to a second embodiment of the present invention;

Figure 6 is a perspective view of an ultrasonic blade head according to a third embodiment of the present invention.

In the picture:

1 to cutter end, 11 to cut, 12 to joint, 13 to cogging, 14 to 耙 structure, 15 to knurling structure, 16 to water outlet, 2 to shank, 3 to blade, 31 to Connecting thread, 32 to clamping surface.

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. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

1 to 4 show an ultrasonic blade head according to a first embodiment of the present invention. 1 is a perspective view of an ultrasonic blade head according to a first embodiment of the present invention, FIG. 2 is a front view of the ultrasonic blade head according to the first embodiment of the present invention, and FIG. 3 is a first embodiment of the present invention showing a hollow structure. A top view of the ultrasonic blade head of the mode, and Fig. 4 is a front view of the ultrasonic blade head of the first embodiment of the present invention showing a hollow structure. As shown in FIG. 1 and FIG. 2, the ultrasonic blade head of the present invention comprises a cutter head end 1, a cutter bar 2 and a blade body 3. One end of the cutter bar 2 is connected to the tip end portion 1, and the other end of the cutter bar 2 is One end of the blade 3 is connected, and the other end of the blade 3 is connected to a specific ultrasonic host through an ultrasonic transducer. Wherein, the cutter head end portion 1 includes a cutting portion 11 and a connecting portion 12, the cutting portion 11 is located at the front end of the cutter head end portion 1 for grinding and cutting, and the connecting portion 12 is connected with the cutter bar 2, has a cylindrical structure and is opposite to The shank 2 is bent at an angle to one side. In the ultrasonic blade head according to the first embodiment of the present invention, the cutting portion 11 of the tip end portion 1 has a spatula shape. The concave surface on the upper side of the cutting portion of the tip end portion 1 may have a tooth groove 14 and a toothed structure.

In addition, in the ultrasonic cutter head according to the first embodiment of the present invention, the cutter bar 2 may have a hollow structure, and a water injection hole may be opened at a portion of the cutter bar 2 near the end portion 1 of the cutter head, as shown in FIG. Directly into the end of the cutter head 1. It is also possible that the hollow portion extends all the way to the front end of the end of the cutter head, and a water injection hole or a water injection tank is formed at the foremost end of the cylindrical structure at the end of the cutter head, as shown in FIG.

According to the ultrasonic blade head of the first embodiment of the present invention, all the energy generated by the ultrasonic transducer can be concentrated on the front end portion of the blade (the most effective working portion), so that the front end portion of the cutter has the strongest energy output. Achieve the strongest work results. In addition, according to the ultrasonic blade head of the present invention, since the connecting portion 12 is coupled to the shank 2 and has a cylindrical structure and is bent at an angle to one side with respect to the shank 2, in some cervical anterior surgery, Convenient removal of the medial epiphysis or ossified ligament increases the convenience and safety of the surgical procedure.

Further, since the ultrasonic blade head has a hollow structure, a water injection hole is formed at the end portion of the cutter head, and the perfusion liquid is ensured to flow out from the portion of the cutter bar 2 near the tip end portion 1, so that sufficient water can be injected. During the operation, the entire head and the contacted tissue are completely in the cleaning and cooling of the perfusate in real time, which ensures that the excised tissue is immediately discharged, the visual field at the incision is clear and clean, and the remaining tissue to be retained can be protected. Being damaged, the risk of surgery is further reduced, and the safety and success rate of surgery are improved.

Fig. 5 shows an ultrasonic blade head of a second embodiment of the present invention. As shown in FIG. 5, the ultrasonic blade head according to the second embodiment of the present invention comprises a cutter head end portion 1, a cutter bar 2 and a blade body 3. One end of the cutter bar 2 is connected to the tip end portion 1, and the other end of the cutter bar 2 is connected. Connected to one end of the blade body 3, the other end of the blade body 3 is connected to a specific ultrasound host through an ultrasonic transducer. Similar to the first embodiment, in the ultrasonic blade head according to the second embodiment of the present invention, the tip end portion 1 includes a cutting portion 11 and a connecting portion 12, and the cutting portion 11 is located at the front end of the tip end portion 1 for sanding, The cutting portion 12 is connected to the shank 2 in a cylindrical configuration and bent at an angle to one side with respect to the shank 2. Compared to the first embodiment, the ultrasonic blade head of the second embodiment of the present invention is different in that the cutting portion 11 of the tip end portion 1 of the ultrasonic blade head has a meandering shape (or a comb shape).

In the ultrasonic blade head according to the second embodiment of the present invention, the connecting portion 12 is connected to the shank 2, and the connecting portion 12 has a cylindrical structure and is angled to one side with respect to the shank 2 bending. The shank 2 may have a hollow structure, and a water injection hole (not shown) may be formed in a portion of the shank 2 near the tip end portion 1, and the rinsing liquid may be directly injected into the tip end portion 1. Alternatively, the hollow portion may extend to the front end of the end portion of the cutter head, and a water injection hole or a water injection tank (not shown) may be formed at the foremost end of the cylindrical structure at the end portion of the cutter head.

The above structure of the ultrasonic blade head according to the second embodiment of the present invention is the same as the ultrasonic blade head of the first embodiment, and is capable of concentrating all the energy generated by the ultrasonic transducer on the front end portion of the blade (the most effective working portion) ), so that the front end of the tool has the strongest energy output to achieve the strongest working effect. In addition, the ossified portion is removed by the upward squat structure, and the contact area of the scorpion head is small relative to the spoon-shaped head end of the first embodiment, but the force of grinding on the contact surface is further improved, and is suitable for the bone. Operate more severe parts. Thereby, the efficiency of the operation can be improved, the operation time can be shortened, and the burden on the patient during the operation can be reduced.

Further, since the ultrasonic blade head has a hollow structure, a water injection hole is formed at the end portion of the cutter head, and it is also ensured that the perfusion liquid flows out from the portion of the cutter bar 2 near the tip end portion 1, and the water can be sufficiently filled. During the operation, the entire head and the contacted tissue are completely in the cleaning and cooling of the perfusate in real time, so that the excised tissue can be immediately discharged. Moreover, the visual field at the incision is clear and clean, which further reduces the risk of surgery, and improves the safety and success rate of the operation.

Fig. 6 shows an ultrasonic blade head of a third embodiment of the present invention. As shown in FIG. 6, the ultrasonic blade head according to the third embodiment of the present invention also includes a cutter head end portion 1, a cutter bar 2 and a blade body 3. One end of the cutter bar 2 is connected to the tip end portion 1, and the cutter bar 2 is further One end is connected to one end of the blade body 3, and the other end of the blade body 3 is connected to a specific ultrasound host through an ultrasonic transducer. Similar to the first and second embodiments, in the ultrasonic blade head according to the third embodiment of the present invention, the tip end portion 1 includes a cutting portion 11 and a connecting portion 12, and the cutting portion 11 is located at the front end of the tip end portion 1, and is connected. The portion 12 is coupled to the shank 2, and the connecting portion 12 has a cylindrical structure and is bent at an angle to one side with respect to the shank 2. Compared with the first and second embodiments, the ultrasonic blade head of the third embodiment of the present invention is different in that the cutting portion 11 of the tip end portion 1 of the ultrasonic blade head is knurled to form a knurling. structure.

As in the first and second embodiments of the present invention, in the ultrasonic blade head according to the third embodiment of the present invention, the connecting portion 12 is connected to the shank 2, and the connecting portion 12 has a cylindrical structure and is oriented to one side with respect to the shank 2. Bend at an angle. The shank 2 may have a hollow structure, and a water injection hole (not shown) may be formed in a portion of the shank 2 near the tip end portion 1, and the rinsing liquid may be directly injected into the tip end portion 1. Alternatively, the hollow portion may extend to the front end of the end portion of the cutter head, and a water injection hole or a water injection tank (not shown) may be formed at the foremost end of the cylindrical structure at the end portion of the cutter head.

According to the above configuration of the ultrasonic blade head according to the third embodiment of the present invention, as in the ultrasonic blade heads of the first and second embodiments of the present invention, all the energy generated by the ultrasonic transducer can be concentrated on the front end portion of the blade ( The most effective working part), so that the front end of the tool has the strongest energy output to achieve the strongest working effect. In addition, the end portion of the cutter head using the knurled structure is sharpened and more flat, so that the bone grinding operation can be performed on a larger area. Further, since the ultrasonic blade head has a hollow structure, a water injection hole is provided at the end portion of the cutter head, and the perfusion liquid is also ensured to flow out from the portion of the cutter bar 2 near the tip end portion 1, so that sufficient water can be injected. During the operation, the entire head and the contacted tissue are completely in the cleaning and cooling of the perfusate in real time, and the excised tissue can be immediately discharged. Moreover, the visual field at the incision is clear and clean, which further reduces the risk of surgery, and improves the safety and success rate of the operation.

Further, in the ultrasonic blade head according to the first to third embodiments of the present invention, one end of the holder 2 is connected to the end portion 1 of the cutter head, and the other end of the holder 2 is connected to one end of the blade body 3, and between the holder 2 and the blade body 3 may be The smooth transition of the inclined surface or the circular arc surface is provided with the connecting thread 31 at the other end of the blade body 3. The connecting thread 31 can be either in-line or externally embedded. During the surgical operation, the connecting thread 31 of the blade 3 is connected to a specific ultrasonic transducer and tightened with a corresponding wrench, and then the ultrasonic transducer is connected to a specific ultrasonic host to perform the operation.

The above embodiments are merely illustrative of 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 equivalents may be substituted for some or all of the technical features. These modifications and substitutions do not depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

An ultrasonic cutter head comprising a cutter head end, a cutter bar and a blade body, wherein one end of the cutter bar is connected to the cutter head end, and the other end of the cutter bar is connected with one end of the blade body, and the feature thereof Yes,

The cutter head end portion includes a cutting portion and a connecting portion, the cutting portion is located at a front end of the cutter head end, and the connecting portion is coupled to the cutter bar, the connecting portion has a cylindrical structure and is opposite to the cutter The rod is bent at an angle to one side.
The ultrasonic blade head according to claim 1, wherein

The cutting portion at the end of the cutter head is in the shape of a scraper.
The ultrasonic blade head according to claim 2, wherein

The edge of the cutter head is upward and the bottom surface is a smooth circular arc plane.
The ultrasonic blade head according to claim 2, wherein

The upper side of the cutting portion of the end portion of the cutter head is provided with a toothed structure.
The ultrasonic blade head according to claim 1, wherein

The cutting portion of the tip end of the cutter head has a meander shape.
The ultrasonic blade head according to claim 1, wherein

The cut portion of the end of the cutter head is knurled to form a knurled structure.
The ultrasonic blade head according to any one of claims 1 to 6, wherein

The shank is a hollow structure, and the hollow portion extends to the front end of the end of the cutter head, and a water injection hole is formed at a side of the cylindrical structure of the cutter head or a side or a front end of the cutting portion.
The ultrasonic blade head according to any one of claims 1 to 6, wherein

Between the arbor and the end of the cutter head, the arbor and the blade body are smoothly connected by a slope or a circular arc surface.
The ultrasonic blade head according to any one of claims 1 to 6, wherein

The other end of the blade is connected to a specific ultrasonic host through an ultrasonic transducer, and the other end of the blade is provided with a connecting thread, and the connecting thread is an in-line connecting thread or an external connecting thread.
The ultrasonic blade head according to any one of claims 1 to 6, wherein

The knife body is also provided with a clamping surface.