AU2019100929A8

AU2019100929A8 - Ultrasonic scalpel bit

Info

Publication number: AU2019100929A8
Application number: AU2019100929A
Authority: AU
Inventors: Qun CAO; Songtao ZHAN; Yixin Zhou
Original assignee: Jiangsu SMTP Technology Co Ltd
Current assignee: Jiangsu SMTP Technology Co Ltd
Priority date: 2017-02-21
Filing date: 2019-08-19
Publication date: 2020-03-12
Anticipated expiration: 2026-02-06
Also published as: AU2019100929A9; AU2019100929A6; AU2019100929A4

Abstract

An ultrasonic scalpel bit is disclosed comprising a bit tip (1), a bit bar (2) and a bit body (3), with one end of the bit bar (2) being connected to the bit tip (1), and the other end of the bit bar (2) being connected to the bit body (3). A main body of the bit tip (1) is of a cylindrical structure, a front end of which is tapered. A single or a plurality of spiral bit blades (11) are spirally arranged along the bit tip (1) from the foremost end of the bit tip (1) to form a cutting portion. A cutting blade (12) of the spiral bit blade (11) is of a square or sharp blade structure. The spiral design of the bit tip (1) may assist a surgeon to gradually drill a hole inwardly in a spiral manner in surgery where it is necessary to use an ultrasonic scalpel to drill the hole. This way the drilling operation will be more controllable, thereby improving the safety of the surgery, and reducing the operation intensity of the surgeon. Fig. 2 for publication Fig. 1 Fig. 2

Description

ULTRASONIC SCALPEL BIT

FIELD

The present disclosure belongs to the technical field of medical instruments, and in particular to an ultrasonic scalpel bit.

DEFINITION

In the present description and claims, the term “comprising” shall be understood to have a broad meaning similar to the term “including” and will be 10 understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps. This definition also applies to variations on the term “comprising” such as “comprise” and “comprises”.

BACKGROUND

In modern society, with the development of medical technologies, orthopedic surgery shows a tendency of diversification. Accordingly, when performing surgery, it is necessary to use different types of scalpel bits for different orthopedic conditions to perform cutting, grinding, scraping, clamping and other operations 20 on an affected area. In surgery, ultrasonic scalpels are typically used to cut and shape soft tissues, hard tissues, and tissues like human tissues. Cutting bits of existing ultrasonic scalpels are mostly sheet-shaped bits, as shown in Fig. 1; moreover, at present, such sheet-shaped bits mostly have a straight bar, and such straight-bar sheet-shaped bits can only complete an operation which is 25 performed at a location being visible, but cannot complete surgical operations such as side scraping.

The reference to prior art in the background above is not and should not be taken as an acknowledgment or any form of suggestion that the referenced prior art forms part of the common general knowledge in Australia or in any other 30 country.

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SUMMARY

The present disclosure provides an ultrasonic scalpel bit which is capable of performing surgical operations at various special operation locations.

In order to at least ameliorate to some extent the technical problem mentioned above, the ultrasonic scalpel bit of one implementation of the present disclosure comprises a bit tip, a bit bar and a bit body, wherein the bit tip is located at one end of the bit bar, and the bit tip has a wedge or flat-sheet shape which gradually transits from a columnar shape of the bit bar, and has a bending extension in a longitudinal direction of the bit bar so as to form a multi-bend bit, 10 the bending extension terminating at a cutting end.

In the ultrasonic scalpel bit of the present disclosure, preferably, a front end face and left and right side faces of the cutting end are cutting faces.

In the ultrasonic scalpel bit of the present disclosure, preferably, a lower surface of the bit tip is further longitudinally provided with a cutting blade, the 15 foremost end and the lowermost end of the cutting blade being cutting faces.

In the ultrasonic scalpel bit of the present disclosure, preferably, the cross section of the cutting blade is in the shape of a rectangle or an inverted triangle or a trapezoid with an upper base greater than a lower base, the foremost end of the cutting blade being tapered.

In the ultrasonic scalpel bit of the present disclosure, preferably, the cutting faces are machined to be straight planar faces or circular arc-shaped faces or wedge-shaped bit blade-like structures or toothed structures.

In the ultrasonic scalpel bit of the present disclosure, preferably, upper and lower surfaces of the cutting end are circular or elliptical or rectangular or 25 trapezoidal in shape.

In the ultrasonic scalpel bit of the present disclosure, preferably, the bit bar is of a hollow structure, and a water injection hole is provided in the bit tip at the side thereof connected to the bit bar for directly directing and injecting an irrigation liquid to the bit tip.

In the ultrasonic scalpel bit of the present disclosure, preferably, a longitudinal through groove or semi-through groove is formed in the upper surface and/or the lower surface of the cutting end.

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In the ultrasonic scalpel bit of the present disclosure, preferably, the other end of the bit bar is connected to the bit body, the bit bar being connected to the bit body through a bevel or a circular arc-shaped face with a smooth transition, and the other end of the bit body is connected to a specific ultrasonic host via an 5 ultrasonic transducer.

In the ultrasonic scalpel bit of the present disclosure, preferably, the other end of the bit body is provided with connection threads, which are internal connection threads or external connection threads; and the bit body is further provided with a clamping portion.

The ultrasonic scalpel bit has the following beneficial effects:

(1) The present disclosure has a simple structure and is easy to machine.

(2) The ultrasonic scalpel bit of the present disclosure can concentrate all the energy generated by the ultrasonic transducer on the bit tip (the most effective working part), so that the front end portion of the bit of the tool has the highest energy output, achieving the strongest working effect.

(3) In the ultrasonic scalpel bit of the present disclosure, the bending design of the bit tip can help physicians to cut various parts which are hard to access, thereby shortening the time of surgery, reducing the surgical operation intensity of the physicians, and improving the safety of the surgery.

(4) In the ultrasonic scalpel bit of the present disclosure, a raised cutting blade is longitudinally provided on the lower surface of the bit tip, such that the cutting end of the ultrasonic scalpel bit is T-shaped, and the ultrasonic scalpel bit becomes a T-shaped bending bit, which can be applied in special occasions, and can cut off the cut bone cement such that it can be easily taken out, thereby reducing the surgical operation intensity of the physicians, and improving the safety of the surgery.

(5) The cutting faces of the present disclosure may be machined to be straight planar faces or circular arc-shaped faces or wedge-shaped bit blade-like or toothed cutting faces, which can be applied in more occasions and facilitates the use.

2019100929 16 Jan 2020 (6) The ultrasonic scalpel bit of the present disclosure is of a hollow structure, and the bit tip is provided with a water injection hole, which can ensure that a perfusate flows out of a rear surface of the bit tip. A longitudinal through groove or semi-through groove is formed in the upper surface and/or the lower 5 surface of the cutting end of the bit tip, so that sufficient water can be injected.

During surgery, the entire bit head and the contacted tissue are completely exposed to cleaning and cooling of the perfusate in real time, so that excised tissues can be immediately discharged, the visual field at an incision is clear and clean, and the remaining tissues to be retained can be protected from being 10 damaged. In this way, the risk of the surgery is further reduced, and the safety and success rate of surgery are further improved.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic structural view of an ultrasonic scalpel bit in the prior 15 art;

Fig. 2 is a schematic perspective view of an ultrasonic scalpel bit of a first embodiment of the present disclosure;

Fig. 3 is a front view of the ultrasonic scalpel bit of the first embodiment of the present disclosure;

Fig. 4 is a top view of the ultrasonic scalpel bit of the first embodiment of the present disclosure;

Fig. 5 is a top view of an ultrasonic scalpel bit of a second embodiment of the present disclosure;

Fig. 6 is a schematic perspective view of an ultrasonic scalpel bit of a third 25 embodiment of the present disclosure;

Fig. 7 is a front view of the ultrasonic scalpel bit of the third embodiment of the present disclosure;

Fig. 8 is a right view of the ultrasonic scalpel bit of the third embodiment of the present disclosure;

Fig. 9 is a bottom view of the ultrasonic scalpel bit of the third embodiment of the present disclosure;

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Fig. 10 is a schematic perspective view of an ultrasonic scalpel bit of a fourth embodiment of the present disclosure;

Fig. 11 is a front view of the ultrasonic scalpel bit of the fourth embodiment of the present disclosure; and

Fig. 12 is a top view of the ultrasonic scalpel bit of the fourth embodiment of the present disclosure.

In the figures:

- Bit tip; 11 - Cutting end; 12 - Cutting face; 13 - Bend; 14 - Water injection hole; 15 - Cutting blade; 2 - Bit bar; 3 - Bit body; 31 - Connection thread; 32 10 Clamping portion.

DETAILED DESCRIPTION OF EMBODIMENTS

The technical solutions of the present disclosure are clearly and completely described below with reference to the accompanying drawings. Apparently, the 15 described embodiments are some of, rather than all, the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without any inventive effort shall fall within the scope of protection of the present disclosure.

In the description of the present disclosure, it should be noted that the 20 orientation or position relations indicated by the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer”, etc. are based on the orientation or position relation shown in the accompanying drawings and are intended to facilitate the description of the present disclosure and simplify the description only, rather than indicating or implying that the device or element 25 referred to must have a particular orientation or be constructed and operated in a particular orientation, and will not be interpreted as limiting the present disclosure. In addition, the terms “first”, “second” and “third” are for descriptive purposes only and should not be construed as indicating or implying relative importance.

In the description of the present disclosure, it should be noted that the terms “mounting”, “connecting” and “connection” should be understood in a broad sense, unless otherwise explicitly specified or defined, for example, it may be a

2019100929 16 Jan 2020 fixed connection, a detachable connection or an integrated connection; may be a mechanical connection or an electrical connection; and may be a direct connection or an indirect connection through an intermediate medium, or may be a communication between the interior of two elements. For those of ordinary 5 skill in the art, the specific meaning of the terms mentioned above in the present disclosure should be construed according to specific circumstances.

The present disclosure is further described in detail below by particular embodiments with reference to the accompanying drawings.

Figs. 2 to 4 show an ultrasonic scalpel bit of a first embodiment of the present 10 disclosure. Fig. 2 is a schematic perspective view of the ultrasonic scalpel bit of the first embodiment, Fig. 3 is a front view of the ultrasonic scalpel bit of the first embodiment, and Fig. 4 is a top view of the ultrasonic scalpel bit of the first embodiment. As shown in Figs. 2 to 4, the ultrasonic scalpel bit of the first embodiment of the present disclosure comprises a bit tip 1, a bit bar 2 and a bit 15 body 3. One end of the bit tip 1 is connected to one end of the columnar bit bar 2, and the other end of the bit tip 1 has a wedge or flat-sheet shape which gradually transits from the columnar shape, and has a bending extension in a longitudinal direction of the bit bar 2. As shown in Figs. 2 and 3, the ultrasonic scalpel bit of this embodiment is bent twice to form two bends 13. The bending 20 extension terminates at a cutting end 11, which cutting end 11 is used to cut and remove a tissue. In the ultrasonic scalpel bit of the present embodiment, upper and lower surfaces of the cutting end 11 are rectangular in shape. A front end face and left and right side faces of the cutting end 11 are cutting faces 12. The cutting faces 12 may also be machined to be straight planar faces substantially 25 perpendicular to the upper and lower surfaces, as shown as the cutting faces on the left and right sides in Figs. 2 to 4. The cutting faces 12 may also be machined into a wedge-shaped bit blade shape to increase the cutting speed, as shown as the cutting face at the front end in Figs. 2 to 4. The cutting faces 12 may also be machined to be toothed to further facilitate cutting and prevent 30 slippage. The cutting faces 12 may also be machined to be circular arc-shaped faces, which further facilitates a circumferential cutting operation in a circular hole-shaped wound. The other end of the bit bar 2 is connected to the bit body

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3, and the bit body 3 is connected to a specific ultrasonic host via an ultrasonic transducer. According to the ultrasonic scalpel bit in the first embodiment of the present disclosure, it is possible to concentrate all the energy generated by the ultrasonic transducer on the bit tip (the most effective working part), so that the 5 front end portion of the bit of the tool has the highest energy output, achieving the strongest working effect. In addition, the bending design of the bit tip can help physicians to cut various parts which are hard to access, thereby shortening the time of surgery, reducing the surgical operation intensity of the physicians, and improving the safety of the surgery.

In the ultrasonic scalpel bit of the first embodiment of the present disclosure, the bit bar 2 is of a hollow structure, and a water injection hole 14 is provided in the bit tip 1 at the side thereof connected to the bit bar 2 for directly injecting an irrigation liquid to the bit tip 1. In order to be able to inject sufficient water, the cutting end 11 may be longitudinally provided with a through groove or a semi15 through groove. One end of the bit bar 2 is connected to the bit tip 1, and the other end of the bit bar 2 is connected to the bit body 3. The bit bar 2 is connected to the bit body 3 through a bevel or a circular arc-shaped face with a smooth transition. The other end of the bit body 3 is provided with connection threads 31. The connection threads 31 may be either internal or external. In this embodiment, external connection threads are used. During a surgical operation, the connection threads 31 of the tail portion of the bit body 3 are connected to a specific ultrasonic transducer and are tightened using a corresponding wrench, and the ultrasonic transducer is then connected to a specific ultrasonic host, so that the ultrasonic scalpel bit is ready for operation.

As mentioned above, the ultrasonic scalpel bit is of a hollow structure, and the bit tip is provided with a water injection hole, which can ensure that a perfusate flows out of the rear surface of the bit tip; a longitudinal through groove or semi-through groove is formed in the upper surface and/or the lower surface of the cutting end, so that sufficient water can be injected; and during surgery, the entire bit head 30 and the contacted tissue are completely exposed to cleaning and cooling of the perfusate in real time, so that excised tissues can be immediately discharged. The visual field at an incision is clear and clean, so that the remaining tissues to

2019100929 16 Jan 2020 be retained can be protected from being damaged. In this way, the risk of the surgery is further reduced, and the safety and success rate of surgery are improved.

Fig. 5 is a top view of an ultrasonic scalpel bit of a second embodiment of 5 the present disclosure. The ultrasonic scalpel bit of this embodiment is substantially the same as the ultrasonic scalpel bit of the first embodiment of the present disclosure, except that the upper and lower surfaces of the cutting end 11 of the bit tip 1 are elliptical in shape, and the cutting faces 12 are circular arcshaped faces, which further facilitate a circumferential cutting operation in a 10 circular hole-shaped wound. Of course, the upper and lower surfaces of the cutting end 11 may also be circular, trapezoidal, etc. in shape. Similarly, in the ultrasonic scalpel bit of this embodiment, the bit bar 2 may also be of a hollow structure, and a water injection hole 14 is provided in the bit tip 1 at the side thereof connected to the bit bar 2, in order for directly injecting an irrigation liquid 15 to the bit tip 1. In order to be able to inject sufficient water, the cutting end 11 may be longitudinally provided with a through groove or a semi-through groove. One end of the bit bar 2 is connected to the bit tip 1, and the other end of the bit bar 2 is connected to the bit body 3. The bit bar 2 is connected to the bit body 3 through a bevel or a circular arc-shaped face with a smooth transition. The 20 other end of the bit body 3 is provided with connection threads 31. The connection threads 31 may be either internal or external. Similarly, the ultrasonic scalpel bit of the hollow structure can ensure that a perfusate flows out of a rear surface of the bit tip. A longitudinal through groove or semi-through groove is formed in the upper surface and/or the lower surface of the cutting end 25 of the bit tip, so that sufficient water injection can be ensured. Therefore, during surgery, the entire bit head and the contacted tissue can be completely exposed to cleaning and cooling of the perfusate in real time, so that excised tissues are immediately discharged, the visual field at an incision is clear and clean, and the remaining tissues to be retained can be protected from being damaged. In this 30 way, the risk of the surgery can be further reduced.

Figs. 6 to 9 show an ultrasonic scalpel bit of a third embodiment of the present disclosure. Fig. 6 is a schematic perspective view of the ultrasonic

2019100929 16 Jan 2020 scalpel bit of the third embodiment, Fig. 7 is a front view of the ultrasonic scalpel bit of the third embodiment, Fig. 8 is a right view of the ultrasonic scalpel bit of the third embodiment, and Fig. 9 is a bottom view of the ultrasonic scalpel bit of the third embodiment. The ultrasonic scalpel bit of the third embodiment of the 5 present disclosure is substantially the same as the ultrasonic scalpel bit of the first embodiment, except that the bending direction of the bit tip 1 is opposite to that of the bit tip 1 in the first embodiment, and in this embodiment, a raised cutting blade 15 is longitudinally provided on the lower surface of the bit tip 1, so that the cutting end in this embodiment has a T-shaped cross section, and the 10 ultrasonic scalpel bit is in the form of a T-shaped bent bit. The cross section of the cutting blade 15 is in the shape of a trapezoid with an upper base greater than a lower base, and the foremost end and the lowermost end of the cutting blade 15 are cutting faces 12. The foremost end of the cutting blade 15 is tapered into a wedge-shaped blade-like structure, as shown in Figs. 8 and 9. The cutting 15 face 12 at the lowermost end of the cutting blade 15 may be machined to be a straight planar face or a circular arc-shaped face or a wedge-shaped bit bladelike structure. In this embodiment, the bit body 3 is further provided with a clamping portion 32. In the ultrasonic scalpel bit of the third embodiment of the present disclosure, a raised cutting blade is longitudinally provided on the lower 20 surface of the bit tip, such that the cutting end of the ultrasonic scalpel bit is Tshaped, and the ultrasonic scalpel bit becomes a T-shaped bent bit, which can be applied in special occasions, and can cut off the cut bone cement such that it can be easily taken out. Therefore, the surgical operation intensity of the physicians is reduced, and the safety of the surgery is improved.

In addition, in the ultrasonic scalpel bit of the third embodiment of the present disclosure, the bit bar 2 may also be of a hollow structure, and a water injection hole is provided in the bit tip 1 at the side thereof connected to the bit bar 2 for directly injecting an irrigation liquid to the bit tip 1. In order to be able to inject sufficient water, the cutting end 11 may also be longitudinally provided with a 30 through groove or a semi-through groove. Therefore, sufficient water can be injected; and during surgery, the entire bit head and the contacted tissue are exposed to cleaning and cooling of the perfusate in real time, so that excised

2019100929 16 Jan 2020 tissues are immediately discharged, the visual field at an incision is clear and clean, and the remaining tissues to be retained can be protected from being damaged. In this way, the risk of the surgery can be further reduced.

Figs. 10 to 12 show an ultrasonic scalpel bit of a fourth embodiment of the 5 present disclosure. Fig. 10 is a schematic perspective view of the ultrasonic scalpel bit of the fourth embodiment, Fig. 11 is a front view of the ultrasonic scalpel bit of the fourth embodiment, and Fig. 12 is a top view of the ultrasonic scalpel bit of the fourth embodiment. The ultrasonic scalpel bit of the fourth embodiment of the present disclosure is substantially similar to the ultrasonic 10 scalpel bit of the first embodiment, except that the cutting faces 12 on the left and right sides of the cutting end 11 are machined to be toothed structures, and the bit body 3 is further provided with clamping portion 32. According to the ultrasonic scalpel bit of the fourth embodiment of the present disclosure, since the cutting faces on the left and right sides of the cutting end are machined to be 15 toothed structures, all the energy generated by the ultrasonic transducer can be concentrated on the tooth tip part (the most effective working part) of the toothed structure of the cutting end 11 of the bit tip, so that the front end portion of the bit of the tool has the highest energy output, achieving the strongest working effect.

In summary, the bending design of the bit tip in the present disclosure can 20 help physicians to cut various parts which are hard to access, thereby shortening the time of surgery, reducing the surgical operation intensity of the physicians, and improving the safety of the surgery. In the present disclosure, a raised cutting blade is longitudinally provided on the lower surface of the bit tip, such that the cutting end of the ultrasonic scalpel bit is of a T-shaped structure, and 25 the ultrasonic scalpel bit becomes a T-shaped bending bit, which can be applied in special occasions, and can cut off the cut full-circle-like bone cement such that it can be easily taken out, thereby reducing the surgical operation intensity of the physicians, and improving the safety of the surgery. In addition, the cutting faces of the present disclosure may be respectively machined to be straight planar 30 faces or circular arc-shaped faces or wedge-shaped bit blade-like or toothed structures, which can be applied in more occasions and facilitate the use.

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The above various embodiments are merely used for illustrating rather than limiting the technical solutions of the present disclosure. Although the present disclosure has been described in detail with reference to the above various embodiments, those of ordinary skill in the art should understood that the 5 technical solutions specified in the above various embodiments can still be modified, or some or all of the technical features therein can be equivalently substituted; and such modifications or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the various embodiments of the present disclosure.

Claims

CLAIMS:

1. An ultrasonic scalpel bit comprising, a bit tip, a bit bar and a bit body, wherein

5 the bit tip is located at one end of the bit bar, and the bit tip has a wedge or flat-sheet shape which gradually transits from a columnar shape of the bit bar, and has a bending extension in a longitudinal direction of the bit bar so as to form a multi-bend bit, the bending extension terminating at a cutting end.

10
2. The ultrasonic scalpel bit according to claim 1, wherein a front end face and left and right side faces of the cutting end are cutting faces.
3. The ultrasonic scalpel bit according to claim 2, wherein

15 a lower surface of the bit tip is further longitudinally provided with a cutting blade, the foremost end and the lowermost end of the cutting blade being cutting faces.
4. The ultrasonic scalpel bit according to claim 3, wherein

20 the cross section of the cutting blade is in the shape of a rectangle or an inverted triangle or a trapezoid with an upper base greater than a lower base, the foremost end of the cutting blade being tapered.
5. The ultrasonic scalpel bit according to any one of claims 2, 3 or 4,

25 wherein the cutting faces are machined to be straight planar faces or circular arcshaped faces or wedge-shaped bit blade-like structures or toothed structures.
6. The ultrasonic scalpel bit according to any one of claims 1, 2, 3 or 4, 30 wherein upper and lower surfaces of the cutting end are circular or elliptical or rectangular or trapezoidal in shape.

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7. The ultrasonic scalpel bit according to any one of claims 1, 2, 3 or 4, wherein the bit bar is of a hollow structure, and a water injection hole is provided in the bit tip at the side thereof connected to the bit bar for directly directing and 5 injecting an irrigation liquid to the bit tip.
8. The ultrasonic scalpel bit according to claim 7, wherein a longitudinal through groove or a semi-through groove is formed in the upper surface and/or the lower surface of the cutting end.
9. The ultrasonic scalpel bit according to any one of claims 1, 2, 3, 4 or 8, wherein the other end of the bit bar is connected to the bit body, the bit bar being connected to the bit body through a bevel or a circular arc-shaped face with a 15 smooth transition, and the other end of the bit body is connected to a specific ultrasonic host via an ultrasonic transducer.
10. The ultrasonic scalpel bit according to claim 6, wherein the other end of the bit body is provided with connection threads, which are internal connection

20 threads or external connection threads, and the bit body is further provided with a clamping portion.