CN219461321U - Waveguide rod of ultrasonic surgical knife - Google Patents

Abstract

A waveguide rod of an ultrasonic surgical blade includes a tail gain section, a longitudinal vibration stabilizing section, and a head gain section. A first spacing section is provided between the tail gain section and the longitudinal vibration stabilizing section. A second spacer section is provided between the longitudinal vibration stabilizing section and the head section gain section. The waveguide rod of the ultrasonic surgical blade further comprises at least one extension. The extension is at least one section. When the extension section is a section, the extension section is connected with the first interval section or the second interval section. When the extension section is two sections, the two sections of extension section are respectively connected with the first spacing section and the second spacing section. The total length of the extension section is an integer multiple of the half wavelength of the corresponding ultrasonic wave. The waveguide rod not only does not influence the performance of the waveguide rod, but also can adapt to more obese patients and operations requiring more operation space due to the existence of the extension section.

Description

Waveguide rod of ultrasonic surgical knife

Technical Field

The utility model relates to the technical field of surgical instruments, in particular to a waveguide rod of an ultrasonic surgical knife.

Background

The ultrasonic surgical knife (ultrasonic knife for short) uses the ultrasonic frequency generator to drive the handle and the knife head to perform ultrasonic vibration at the ultrasonic frequency (55.5 kHz) so as to perform surgical cutting, and the protein hydrogen bonds in the contacted tissue cells can be broken during cutting, so that the broken blood vessels are coagulated to stop bleeding, and simultaneously, the cutting and closing are realized, so that the surgical knife has strong reliability and high surgical safety. The current ultrasonic surgical system is the most leading basic auxiliary instrument of minimally invasive surgery in the world, is also a necessary medical equipment product in large and medium hospitals in the world and China, and is widely applied to the operations of common surgery, obstetrics and gynecology, urology and the like. When the ultrasonic waves are transmitted in a certain medium, mechanical, thermal, acoustic and other responses are generated, and the ultrasonic surgical system utilizes the characteristics of the ultrasonic waves to generate mechanical action, thermal action and cavitation action on tissues so as to cut and close the related tissues, thereby realizing clinical application.

Ultrasonic surgical blades generally consist of a main body, a transducer, a waveguide rod, a tool bit, an accessory mechanism for connecting and supporting the above components, and other accessories. Wherein, the host computer is used for producing the high-frequency current; the transducer is used for converting high-frequency current into ultrasonic vibration, and then ultrasonic energy is transmitted to the cutter head through the waveguide rod. The cutter head is contacted and rubbed with human tissue to generate mechanical cutting and blood coagulation effects. Typically, the transducer is screwed to the waveguide rod, and the waveguide rod and the tool bit may be screwed, welded, or directly integrated. The transducer, waveguide rod and tool tip resonate at a resonant frequency during normal operation. In the process that the waveguide rod transmits ultrasonic vibration from the transducer to the tool bit, on one hand, the vibration needs to be amplified to enable the tool bit to obtain enough amplitude, and on the other hand, the waveguide rod plays a key role in keeping the tool bit stable and suitable vibration frequency. Therefore, the design of the waveguide rod requires a compromise between vibration frequency and amplitude gain.

However, as more and more obese people are present, new robotic operation is simultaneously presented, the design length of the waveguide rod at present cannot meet various requirements, and particularly for some obese patients and mechanical arms requiring more operation space, the ultrasonic knife of the waveguide rod at present brings much trouble to doctors.

Disclosure of Invention

In view of the above, the present utility model provides a waveguide rod of an ultrasonic surgical blade that can satisfy the needs of doctors.

The waveguide rod of the ultrasonic surgical knife comprises a tail gain section, a longitudinal vibration stabilizing section arranged at intervals with the tail gain section, and a knife head gain section arranged at intervals with the longitudinal vibration stabilizing section. A first spacing section is provided between the tail gain section and the longitudinal vibration stabilizing section. A second spacer section is provided between the longitudinal vibration stabilizing section and the head section gain section. The waveguide rod of the ultrasonic surgical blade further comprises at least one extension. The extension is at least one section. When the extension section is a section, the extension section is connected with the first interval section or the second interval section. When the extension section is two sections, the two sections of extension section are respectively connected with the first spacing section and the second spacing section. The total length of the extension section is an integer multiple of the half wavelength of the corresponding ultrasonic wave.

Further, the waveguide rod of the ultrasonic scalpel further comprises a transverse vibration stabilizing section located between the tail gain section and the longitudinal vibration stabilizing section, and the transverse vibration stabilizing section is respectively arranged at intervals with the tail gain section and the longitudinal vibration stabilizing section.

Further, a third spacing section is provided between the lateral vibration stabilizing section and the longitudinal vibration stabilizing section.

Further, when the extension section is three sections, the three sections of extension section are respectively connected with the first spacer section, the second spacer section, and the third spacer section.

Further, the transverse vibration stabilizing section is flat in cross section.

Further, the tail gain section includes at least one step.

Further, the longitudinal vibration stabilizing section includes at least two steps.

Further, the head section gain section comprises at least one step.

Further, the cross sections of the first and second spacing sections are circular.

Further, the extension is circular in cross-section.

Compared with the prior art, the waveguide rod of the ultrasonic surgical knife can be added on the first interval section or the second interval section according to actual needs, or the first interval section and the second interval section are respectively added with the extension section, and meanwhile, the total length of the extension section is an integral multiple of half wavelength of corresponding ultrasonic waves, so that the waveguide rod added with the extension section can not influence the performance of the waveguide rod, and the corresponding ultrasonic surgical knife can adapt to more obese patients and operations requiring more operation space due to the existence of the extension section.

Drawings

Fig. 1 is a schematic view of a waveguide rod of an ultrasonic surgical blade according to a first embodiment of the present utility model.

Fig. 2 is a schematic structural view of a waveguide rod of an ultrasonic surgical blade according to a second embodiment of the present utility model.

Fig. 3 is a schematic structural view of a waveguide rod of an ultrasonic surgical blade according to a third embodiment of the present utility model.

Fig. 4 is a schematic structural view of a waveguide rod of an ultrasonic surgical blade according to a fourth embodiment of the present utility model.

Fig. 5 is a schematic structural view of a waveguide rod of an ultrasonic surgical blade according to a fifth embodiment of the present utility model.

Detailed Description

Specific embodiments of the present utility model are described in further detail below. It should be understood that the description herein of the embodiments of the utility model is not intended to limit the scope of the utility model.

Fig. 1 is a schematic view of a waveguide rod of an ultrasonic surgical blade according to a first embodiment of the present utility model. The waveguide rod of the ultrasonic surgical knife comprises a tail gain section 10, a transverse vibration stabilizing section 20 arranged at intervals with the tail gain section 10, a longitudinal vibration stabilizing section 30 arranged at intervals with the transverse vibration stabilizing section 20, and a tool bit gain section 40 arranged at intervals with the longitudinal vibration stabilizing section 30. It is conceivable that the waveguide of the ultrasonic surgical blade further includes a connection structure provided on the tail gain section 10, a cutter head provided on the cutter head gain section 40, and the like, which are prior art, and will not be described in detail herein.

The tail gain section 10 has two functions, one is for connecting with a transducer to transmit ultrasonic energy to a cutter head, and the other is for improving amplitude gain, so that a connecting structure, such as a thread or other connecting structure, is arranged on the tail gain section 10, and at least one step is arranged on the tail gain section 10, wherein the position of the step corresponds to an antinode or a wave crest or a wave node of ultrasonic wave generated by the transducer, preferably corresponds to the position of the wave node, so as to achieve the purpose of improving amplitude gain.

The transverse vibration stabilizing section 20 serves to increase the stability of the transmitted ultrasonic vibrations, and may have a flat cross section. The length of the transverse vibration stabilizing section 20 may be designed according to practical needs and will not be described in detail herein. The lateral vibration stabilizing section 20 is not necessary and may not be provided when the length of the entire waveguide rod is relatively small. In the present embodiment, the entire length of the waveguide rod is greater than 500 mm, and thus the lateral vibration stabilizing section 20 needs to be provided. Also, in other embodiments, the lateral vibration stabilizing sections 20 are provided.

The longitudinal vibration stabilizing section 30 serves to enhance the efficiency of the transmitted ultrasonic waves, and thus it may include at least two steps. In this embodiment, the longitudinal vibration stabilizing section 30 includes six steps arranged at intervals, by which ultrasonic attenuation can be avoided as much as possible, so that ultrasonic energy is efficiently transmitted.

The head section booster 40 serves to further increase the amplitude of the cutting head provided on the head section booster 40, and includes at least one step. In this embodiment, a step is provided on the head section gain section 40. The head section gain section 40 itself is also known in the art and will not be described in detail herein.

The tail gain section 10, the lateral vibration stabilizing section 20, the longitudinal vibration stabilizing section 30 and the head gain section 40 are respectively arranged at intervals, so that a first interval section 50 is arranged between the tail gain section 10 and the longitudinal vibration stabilizing section 30, a second interval section 70 is arranged between the longitudinal vibration stabilizing section 30 and the head gain section 40, and a third interval section 60 is arranged between the lateral vibration stabilizing section 20 and the longitudinal vibration stabilizing section 30. It should be noted here that, when the waveguide rod is not provided with the lateral vibration stabilizing section 20, the first spacer section 50 is directly provided between the tail gain section 10 and the longitudinal vibration stabilizing section 30. And when the waveguide rod is provided with the lateral vibration stabilizing section 20, the first spacing section 50 is indirectly disposed between the tail gain section 10 and the longitudinal vibration stabilizing section 30, that is, the lateral vibration stabilizing section 20 and the third spacing section 60 are also disposed between the first spacing section 50 and the longitudinal vibration stabilizing section 30. The structures of the first, second and third spacer sections 50, 70, 60 are the same, but the lengths thereof may be designed according to actual needs, and will not be described herein. The first, second and third spacer segments 50, 70, 60 are generally circular in cross-section to avoid affecting the transmission of ultrasonic energy.

The waveguide rod of the ultrasonic surgical blade further includes at least one extension 80. The extension 80 is at least one segment, and the number thereof can be selected according to actual needs. When the extension 80 is a segment, the extension 80 may be connected to one of the first, second, and third spacers 50, 70, 60. In this embodiment, the extension 80 is connected to the first spacer 50. The extension 50 is circular in cross-section and has a diameter equal to the diameter of the first, second, or third spacer 50, 60, or 70 to which it is connected to avoid affecting the transmission of ultrasonic energy. In fig. 2, the extension 80 is connected to the third spacer 60. In fig. 3, the extension 80 is connected to the second spacer 70. When the extension 80 is two segments, the extension is connected to two of the first, second and third spacers 50, 70, 60, respectively, as shown in fig. 4. When the extension 80 is three, the three sections are connected to the first, second and third spacers 50, 70, 60, respectively, as shown in fig. 5.

In addition, when the extension segment 80 is divided into two or three segments, it may not be divided equally, but may be divided arbitrarily. The total length of the extension should be an integer multiple of the corresponding half wavelength of the ultrasound to avoid affecting the transmission of ultrasound energy.

Compared with the prior art, the waveguide rod of the ultrasonic surgical knife provided by the utility model can be added with the extension section 80 on the first interval section 50 or the second interval section 70 according to actual needs or on the first interval section 50 and the second interval section 70 respectively, meanwhile, the total length of the extension section 80 is an integral multiple of the half wavelength of corresponding ultrasonic waves, after the extension section 80 is added, the waveguide rod added with the extension section can not influence the performance of the waveguide rod, and meanwhile, the waveguide rod can be suitable for more obese patients and operations requiring more operation space due to the existence of the extension section.

The above is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model, and any modifications, equivalent substitutions or improvements within the spirit of the present utility model are intended to be covered by the claims of the present utility model.

Claims (10)

1. The utility model provides a waveguide rod of ultrasonic surgical sword which characterized in that: the waveguide rod of the ultrasonic surgical knife comprises a tail gain section, a longitudinal vibration stabilizing section and a tool bit section gain section, wherein the longitudinal vibration stabilizing section is arranged at intervals of the tail gain section, the tool bit section gain section is arranged at intervals of the longitudinal vibration stabilizing section, a first interval section is arranged between the tail gain section and the longitudinal vibration stabilizing section, a second interval section is arranged between the longitudinal vibration stabilizing section and the tool bit section gain section, the waveguide rod of the ultrasonic surgical knife further comprises at least one extension section, the extension section is at least one section, when the extension section is one section, the extension section is connected with the first interval section or the second interval section, when the extension section is two sections, the two sections of extension sections are respectively connected with the first interval section and the second interval section, and the total length of the extension section is an integral multiple of half wavelength of corresponding ultrasonic waves.

2. The waveguide rod of the ultrasonic surgical blade of claim 1, wherein: the waveguide rod of the ultrasonic scalpel further comprises a transverse vibration stabilizing section located between the tail gain section and the longitudinal vibration stabilizing section, and the transverse vibration stabilizing section is respectively arranged at intervals with the tail gain section and the longitudinal vibration stabilizing section.

3. The waveguide rod of the ultrasonic surgical blade of claim 2, wherein: a third spacing section is provided between the lateral vibration stabilizing section and the longitudinal vibration stabilizing section.

4. The waveguide rod of the ultrasonic surgical blade of claim 3, wherein: when the extension section is three sections, the three sections of extension section are respectively connected with the first interval section, the second interval section and the third interval section.

5. The waveguide rod of the ultrasonic surgical blade of claim 2, wherein: the cross section of the transverse vibration stabilizing section is flat.

6. The waveguide rod of the ultrasonic surgical blade of claim 1, wherein: the tail gain section includes at least one step.

7. The waveguide rod of the ultrasonic surgical blade of claim 1, wherein: the longitudinal vibration stabilizing section includes at least two steps.

8. The waveguide rod of the ultrasonic surgical blade of claim 1, wherein: the head section relief segment includes at least one step.

9. The waveguide rod of the ultrasonic surgical blade of claim 1, wherein: the cross sections of the first interval section and the second interval section are round.

10. The waveguide rod of the ultrasonic surgical blade of claim 1, wherein: the extension section is circular in cross-section.