Ultrasonic osteotome

Abstract

The ultrasonic osteotome comprises a knife rod, the knife rod is connected with a blade, a cooling channel is formed in the knife rod, and the cooling channel is used for injecting cooling liquid into the blade; wherein a liquid inlet of the cooling channel penetrates through the end, away from the blade, of the cutter bar, an included angle theta is formed between the liquid outlet direction of the cooling channel and the length direction of the blade, and the included angle theta is an acute angle.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an ultrasonic bone scalpel. Background Technology

[0002] The ultrasonic bone scalpel is an innovative technology with many features and advantages that traditional manual and electric orthopedic surgical instruments cannot match. This scalpel utilizes high-intensity focused ultrasound technology, converting electrical energy into mechanical energy through a transducer. The high-frequency ultrasonic vibrations vaporize water within the cells of the tissue it contacts, breaking protein hydrogen bonds and thus completely destroying the bone tissue that needs to be cut during surgery.

[0003] Existing ultrasonic bone scalpels have a cooling channel designed through the inside of the blade tip. The cooling channel is used to inject coolant to cool the blade tip. However, the outlet of the cooling channel is a horizontal structure, which means that the outlets on both sides of the outlet channel are arranged perpendicular to the blade tip. When the injection pressure is high, the angle between the direction of the coolant exiting from the outlet and the direction of the blade tip is too large. This causes the coolant to be easily dispersed by ultrasonic vibration. After the coolant is ejected, its adhesion to the blade is poor, and less coolant effectively flows to the blade tip, ultimately resulting in poor cooling effect. Utility Model Content

[0004] The main purpose of this application is to provide an ultrasonic bone scalpel that aims to solve the technical problem of poor cooling effect caused by unreasonable cooling channel design in existing ultrasonic bone scalpels.

[0005] To achieve the above objectives, this application provides an ultrasonic bone scalpel, including a shank connected to a blade, and a cooling channel formed inside the shank for injecting coolant into the blade; wherein, the inlet of the cooling channel extends through the end of the shank away from the blade, and the outlet of the cooling channel forms an angle θ with the length direction of the blade, and the angle θ is an acute angle.

[0006] Optionally, the cooling channel includes a liquid injection channel, one end of which is a liquid inlet, and the other end of which is connected to a liquid drain channel, the other end of which is a liquid outlet. The axis of the liquid drain channel forms an angle θ with the length direction of the blade.

[0007] Optionally, the injection channel is coaxially arranged inside the knife holder, and there are two drainage channels, with both drainage channels simultaneously connected to one end of the injection channel.

[0008] Optionally, the two drainage channels are arranged in a V-shape and are symmetrical to each other.

[0009] Optionally, the end of the cutter bar has two outlet surfaces that cooperate with the outlets of the corresponding drainage channels.

[0010] Optionally, the included angle θ can range from 20° to 70°.

[0011] Optionally, a transition section connects the tool holder and the cutting tool, and the thickness of the transition section gradually decreases towards the cutting tool.

[0012] Optionally, the thickness of the blade gradually decreases in the direction away from the tool holder.

[0013] Optionally, a cutting section is provided at the end of the blade away from the blade holder. The cutting section includes a first serrated section at the end of the blade and a second serrated section and a third serrated section respectively on both sides of the blade. The second serrated section and the third serrated section are respectively connected to the two ends of the first serrated section.

[0014] Optionally, the tool holder includes a rod body, on which a disassembly and positioning part is provided. The disassembly and positioning part has four disassembly surfaces, and adjacent disassembly surfaces are perpendicular to each other.

[0015] The beneficial effects that this application can achieve are as follows:

[0016] This application includes a tool holder connected to a blade. A cooling channel is formed within the tool holder for injecting coolant into the blade. The inlet of the cooling channel extends through the end of the tool holder furthest from the blade, and the outlet of the cooling channel forms an acute angle θ with the length direction of the blade. This application optimizes the angle θ between the outlet of the cooling channel and the blade, allowing the coolant to be ejected from the outlet closer to the blade. This reduces the risk of the coolant being dispersed by ultrasonic vibration, improves the adhesion of the coolant to the blade after ejection, and increases the amount of coolant flowing to the blade tip, thereby improving the cooling effect on the blade. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a cross-sectional view of an ultrasonic bone scalpel according to an embodiment of this application;

[0019] Figure 2 This is a three-dimensional structural diagram of an ultrasonic bone scalpel according to an embodiment of this application;

[0020] Figure 3 This is a perspective view of an ultrasonic bone scalpel as described in an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the planar structure of an ultrasonic bone scalpel according to an embodiment of this application;

[0022] Figure 5 for Figure 4 A top view structural diagram.

[0023] Figure label:

[0024] 110-Tool holder, 111-Bar body, 112-Disassembly and positioning part, 1121-Disassembly surface, 120-Blade, 130-Cooling channel, 131-Injection channel, 132-Drainage channel, 140-Outlet surface, 150-Transition section, 160-Cutting part, 161-First serration, 162-Second serration, 163-Third serration.

[0025] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0028] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0030] Example

[0031] Reference Figures 1-5 This embodiment provides an ultrasonic bone scalpel, including a scalpel 110, a blade 120 connected to the scalpel 110, and a cooling channel 130 formed inside the scalpel 110 for injecting coolant into the blade 120; wherein, the inlet of the cooling channel 130 extends through the end of the scalpel 110 away from the blade 120, and the outlet of the cooling channel 130 forms an angle θ with the length direction of the blade 120, and the angle θ is an acute angle.

[0032] In this embodiment, the angle θ between the outlet direction of the cooling channel 130 and the blade 120 is optimized. When the coolant enters the cooling channel 130 from the inlet at the end of the blade 110, it is sprayed out from the outlet of the cooling channel 130 (i.e., the other end of the blade 110). When sprayed out, it is closer to the blade 120, thereby reducing the risk of the coolant being dispersed by ultrasonic vibration and improving the adhesion performance of the coolant on the blade 120 after it is sprayed out, thus improving the cooling effect on the blade 120.

[0033] As an optional implementation, the cooling channel 130 includes a liquid injection channel 131, one end of which is a liquid inlet, and the other end of which is connected to a liquid discharge channel 132, the other end of which is a liquid outlet. The axis of the liquid discharge channel 132 forms an angle θ with the length direction of the blade 120.

[0034] In this embodiment, since the outlet needs to be arranged at an angle θ relative to the blade 120, the cooling channel 130 is designed as a multi-segment channel structure with an injection channel 131 and a drainage channel 132. The relative angle between the injection channel 131 and the drainage channel 132 is θ. After the coolant enters through the straight injection channel 131, it is discharged from the drainage channel 132 at an angle θ.

[0035] It should be noted that the axial direction of the drain channel 132 should be close to the plane direction of the blade 120 so that the sprayed coolant can effectively adhere to the plane of the blade 120 and ensure the adhesion effect.

[0036] As an optional implementation, the injection channel 131 is coaxially disposed inside the knife bar 110, and there are two drainage channels 132, with both drainage channels 132 simultaneously connected to one end of the injection channel 131.

[0037] In this embodiment, since the blade 120 has two planes, two drainage channels 132 are provided that can be close to the planes of the blade 120 respectively. The coolant in the injection channel 131 can be divided into two streams and sprayed from the drainage channel 132 to the corresponding planes of the blade 120, which further improves the coverage of the coolant on the blade and improves the cooling effect.

[0038] As an optional implementation, the two drainage channels 132 are arranged in a V-shape and are symmetrical to each other, with a compact structure and reasonable design.

[0039] As an optional implementation, the end of the tool holder 110 is provided with two liquid outlet surfaces 140 that cooperate with the liquid outlet of the corresponding drain channel 132. Here, the liquid outlet surfaces 140 should be perpendicular to the axis of the drain channel 132 to facilitate liquid discharge and reduce the processing difficulty.

[0040] As an optional implementation, the included angle θ can be in the range of 20° to 70°, which can meet the requirements of the adhesion ability of the coolant after it is discharged. Considering both the adhesion ability and the processing difficulty, the included angle θ is preferably 45°, that is, the two drain channels 132 are perpendicular to each other.

[0041] As an alternative implementation, a transition section 150 is provided between the tool holder 110 and the blade 120, and the thickness of the transition section 150 gradually decreases toward the blade 120.

[0042] In this embodiment, since the tool holder 110 is generally a long cylindrical rod and the blade 120 is a thin sheet structure, the two are connected by a transition section 150. The transition section 150 adopts a thickness gradient design, which can improve the strength of the connection structure of the blade 120 and reduce the risk of the blade 120 breaking or deforming.

[0043] As an alternative implementation, the thickness of the blade 120 gradually decreases in the direction away from the tool holder 110. Similarly, by designing a gradual change in the thickness of the blade 120, the structural strength of the blade 120 can be further improved, thereby increasing the service life of the blade 120.

[0044] As an optional implementation, a cutting portion 160 is provided at the end of the blade 120 away from the blade shank 110. The cutting portion 160 includes a first serrated portion 161 opened at the end of the blade 120 and a second serrated portion 162 and a third serrated portion 163 respectively opened on both sides of the blade 120. The second serrated portion 162 and the third serrated portion 163 are respectively connected to the two ends of the first serrated portion 161.

[0045] In this embodiment, a design structure is formed at the end of the blade 120 with a first serrated portion 161, a second serrated portion 162, and a third serrated portion 163, thereby forming a straight-headed double-edged ultrasonic bone scalpel to meet the needs of surgical procedures in some corresponding application scenarios. Here, the cutting portion 160 can also be designed with other cutting structures as needed, thereby forming various types of ultrasonic bone scalpels.

[0046] As an optional implementation, the tool holder 110 includes a rod body 111, on which a disassembly positioning part 112 is provided. The disassembly positioning part 112 has four disassembly surfaces 1121, and adjacent disassembly surfaces 1121 are perpendicular to each other.

[0047] In this embodiment, the rod 111 is a long cylindrical rod. Since the rod 111 needs to be used in conjunction with the ultrasonic instrument during use, after use, the tool rod 110 can be removed from the ultrasonic instrument by clamping the disassembly positioning part 112 with a wrench. Here, four disassembly surfaces 1121 are designed to cooperate with the wrench, which can facilitate quick positioning and clamping with the wrench and improve the ease of operation.

[0048] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An ultrasonic osteotome characterized by, The tool includes a tool holder connected to a cutting blade, and a cooling channel is provided inside the tool holder for injecting coolant into the cutting blade; wherein... The inlet of the cooling channel extends through the end of the cutter bar away from the blade, and the outlet of the cooling channel forms an angle θ with the length direction of the blade, wherein the angle θ is an acute angle.

2. An ultrasonic osteotome according to claim 1, wherein, The cooling channel includes a liquid injection channel, one end of which is the liquid inlet, and the other end of which is connected to a liquid discharge channel, the other end of which is the liquid outlet. The axis of the liquid discharge channel forms an angle θ with the length direction of the blade.

3. The ultrasonic bone scalpel as described in claim 2, characterized in that, The injection channel is coaxially disposed inside the knife bar, and there are two drainage channels, with both drainage channels simultaneously connected to one end of the injection channel.

4. An ultrasonic bone scalpel as described in claim 3, characterized in that, The two drainage channels are arranged in a V-shape and are symmetrical to each other.

5. An ultrasonic bone scalpel as described in claim 3, characterized in that, The end of the cutter bar has two outlet surfaces that cooperate with the outlets of the corresponding drainage channels.

6. An ultrasonic bone scalpel as described in any one of claims 1-5, characterized in that, The included angle θ ranges from 20° to 70°.

7. An ultrasonic bone scalpel as described in claim 1, characterized in that, A transition section connects the tool holder and the blade, and the thickness of the transition section gradually decreases towards the blade.

8. An ultrasonic bone scalpel as described in claim 1 or 7, characterized in that, The thickness of the blade gradually decreases in the direction away from the blade holder.

9. An ultrasonic bone scalpel as described in claim 1, characterized in that, The blade has a cutting section at one end away from the blade holder. The cutting section includes a first serrated section at the end of the blade and a second serrated section and a third serrated section respectively on both sides of the blade. The second serrated section and the third serrated section are respectively connected to the two ends of the first serrated section.

10. The ultrasonic osteotome of claim 1 wherein, The tool holder includes a rod body, on which a disassembly and positioning part is provided. The disassembly and positioning part has four disassembly surfaces, and adjacent disassembly surfaces are perpendicular to each other.

Images