An ultra-long ultrasonic knife

Abstract

The utility model discloses an extra-long ultrasonic knife, comprising a driving device and a knife rod, wherein the driving device is connected to the knife rod to drive the knife rod to vibrate, the knife rod comprises a knife rod body, a rod groove and a knife head, one end of the knife rod body is connected to the driving device, and the other end is connected to the knife head, a plurality of rod grooves for adjusting the knife rod resonant frequency, impedance and total length of the knife rod to required values ​​are arranged on the knife rod body, the length of the present application is greater than 50 cm, and can be suitable for long-term use on a surgical robot.

Description

Technical Field

[0001] The utility model relates to the field of ultrasonic scalpels, in particular to an ultra-long ultrasonic scalpel. Background Art

[0002] At present, ultrasonic scalpels are widely used in various surgical operations. Compared with traditional surgical equipment, ultrasonic scalpels have the advantages of high precision, less trauma and easy recovery after surgery. With the development of technology, ultrasonic scalpels are gradually developing in the direction of surgical robots to achieve remote and precise surgical treatment. At present, the length of existing ultrasonic scalpels is less than 50cm, which leads to insufficient length when used on surgical robots. How to solve the problem of adapting ultrasonic scalpels for use with surgical robots is a problem faced by major manufacturers. This application proposes a solution to this problem. Summary of the invention

[0003] Purpose of the utility model: The purpose of the utility model is to provide an extra-long ultrasonic scalpel that can be used on a surgical robot, thereby solving the problem that a traditional ultrasonic scalpel is too short to be used on a surgical robot for a long time.

[0004] Technical solution: The utility model describes an ultra-long ultrasonic knife, comprising a driving device and a knife rod, wherein the driving device is connected to the knife rod to drive the knife rod to vibrate, and the knife rod comprises a knife rod body, a groove on the rod and a knife head, one end of the knife rod body is connected to the driving device, and the other end is connected to the knife head, and the knife rod body is provided with a plurality of grooves on the rod for adjusting the knife rod resonant frequency, impedance and total length of the knife rod to the required values.

[0005] Preferably, the overall length of the arbor is between 50cm and 60cm, the resonant frequency is between 55khz and 56khz, and includes 6.5 wavelengths in length.

[0006] Preferably, the impedance of the knife rod is less than 100 ohms.

[0007] Preferably, the diameter of the shank body is between 2 mm and 4 mm.

[0008] Preferably, the grooves on the rod are respectively arranged on the antinodes, nodes or positions between the antinodes and nodes of the shank body, and the length of the grooves on the rod is less than a quarter of the wavelength.

[0009] The grooves on the rod located at the antinodes are used to increase the resonant frequency of the tool rod and increase the impedance of the tool rod. The grooves on the rod located at the nodes are used to reduce the resonant frequency of the tool rod and increase the impedance of the tool rod. The grooves on the rod between the antinodes and the nodes are used to reduce the impedance of the tool rod. The three grooves cooperate with each other to adjust the resonant frequency, impedance and total length of the tool rod to the required values.

[0010] Preferably, the blade head is arc-shaped, the amplitude of the tip of the blade head is between 60 microns and 80 microns, and the blade head is provided with a Teflon coating to prevent the blade head from adhering to the tissue.

[0011] Preferably, the current of the driving device is no more than 340 mA.

[0012] Beneficial effects: The utility model is longer than a traditional ultrasonic scalpel and can be used for a long time on a surgical robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a physical schematic diagram of an embodiment of the utility model.

[0015] Among them: 1. Driving device; 2. Cutter rod; 3. Cutter rod body; 4. Groove on the rod; 5. Cutter head. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0017] See attached Figures 1-2 FIG. 1 shows an ultra-long ultrasonic knife rod of the utility model, which includes a driving device 1 and a knife rod 2, wherein the driving device 1 is connected to the knife rod 2 to drive the knife rod 2 to vibrate. In this embodiment, the driving device 1 uses a piezoelectric ceramic transducer to drive the knife rod 2 with a current of 340 mA.

[0018] In this embodiment, the tool rod 2 includes a tool rod body 3, a rod groove 4 and a tool head 5, wherein one end of the tool rod body 3 is connected to the piezoelectric ceramic transducer, and the other end is connected to the tool head 5, and the rod groove 4 is arranged at the position of the wave trough, wave node or between the wave trough and wave node of the tool rod body 3. The rod groove 4 located at the wave trough is used to increase the resonant frequency of the tool rod 2 and increase the impedance of the tool rod 2, the rod groove 4 located at the wave node is used to reduce the resonant frequency of the tool rod 2 and increase the impedance of the tool rod 2, and the rod groove 4 located between the wave trough and the wave node is used to reduce the impedance of the tool rod 2. The three grooves cooperate with each other to adjust the resonant frequency, impedance and total length of the tool rod 2 to the required values.

[0019] In this embodiment, the blade rod 2 as a whole has a length of 6.5 wavelengths, an overall length of 57.2 cm, a resonant frequency of 55.540 khz, an impedance of 53 ohms, and a diameter of the blade rod body 3 of 3 mm.

[0020] In this embodiment, the length of the groove 4 on the rod is less than a quarter of a wavelength.

[0021] In this embodiment, the blade head 5 is arc-shaped, and the amplitude of the tip of the blade head 5 is 60 microns. A Teflon coating is provided on the blade head 5 to prevent the blade head from adhering to the tissue.

[0022] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An ultra-long ultrasonic scalpel, characterized in that: It includes a driving device and a tool rod, wherein the driving device is connected to the tool rod to drive the tool rod to vibrate, and the tool rod includes a tool rod body, a groove on the rod and a tool head, one end of the tool rod body is connected to the driving device, and the other end is connected to the tool head, and the tool rod body is provided with a plurality of grooves on the rod for adjusting the tool rod resonant frequency, impedance and total length of the tool rod to the required values.

2. The ultra-long ultrasonic scalpel according to claim 1, characterized in that: The overall length of the shank is between 50cm and 60cm, the resonant frequency is between 55khz and 56khz, and includes a length of 6.5 wavelengths.

3. The ultra-long ultrasonic scalpel according to claim 1, characterized in that: The impedance of the knife bar is less than 100 ohms.

4. The ultra-long ultrasonic scalpel according to claim 1, characterized in that: The diameter of the knife rod body is between 2mm and 4mm.

5. The ultra-long ultrasonic scalpel according to claim 1, characterized in that: The grooves on the rod are respectively arranged on the antinodes, nodes or positions between the antinodes and nodes of the blade rod body, and the length of the grooves on the rod is less than a quarter of the wavelength.

6. The ultra-long ultrasonic scalpel according to claim 1, characterized in that: The blade head is arc-shaped, and the amplitude of the tip of the blade head is between 60 microns and 80 microns. The blade head is provided with a Teflon coating to prevent the blade head from adhering to tissues.

7. The ultra-long ultrasonic scalpel according to claim 1, characterized in that: The current of the driving device is no more than 340 mA.

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