A medium range composite structure ultrasonic scalpel center rod

Abstract

The application belongs to the technical field of medical devices, and particularly relates to a medium-range type composite structure ultrasonic surgical knife center rod. The application comprises a surgical knife main body, wherein the surgical knife main body is provided with a first center rod section, a second center rod section, a third center rod section, a fourth center rod section, a fifth center rod section, a sixth center rod section, a seventh center rod section, an eighth center rod section and a ninth center rod section, and the ninth center rod section is connected with the surgical knife main body. The application is applied to a laparoscopic surgery, adopts a medium-range center rod, realizes the effect that the front end center beam of a working surface of the center rod is 10-15 dB lower than the rear end beam, thereby greatly weakening the concentrated output of the center beam tip energy, eliminating the static impedance reduction of the center whole, reducing the energy consumption (surgical knife rod self-heating reduction) of the center rod itself during work, greatly optimizing the minimum emission response of the center rod, and greatly improving the effect of the center rod during cutting and hemostasis.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical devices, and relates to a medium-range type composite structure ultrasonic surgical knife center rod. BACKGROUND

[0002] The ultrasonic surgical knife equipment is generally composed of a main machine, a transducer, a center rod, operating mechanical accessories and the like. The center rod and the transducer are generally connected through a screw rod. The transducer vibrates at a high frequency, and a certain pre-stress is applied through the inner connecting surface and transmitted to the center rod. In the process of transmitting the high-frequency vibration energy from the transducer to the center rod, on the one hand, the high-frequency vibration needs to be amplified to meet the high-amplitude requirement of the knife head, and on the other hand, the center rod needs to keep the stable vibration frequency of the knife head to meet the stable output requirement. According to the above two points, the center rod needs to meet the high-frequency vibration requirement and the stable output requirement under the high-frequency vibration and high amplitude. The center rod applied to the endoscopic surgery needs to be a medium-range center rod, and the length of the center rod has strict requirements. In the use process of the medium-range center rod, the front end of the working surface is difficult to greatly weaken the concentrated output of the energy of the tip of the center beam, and it is difficult to eliminate the reduction of the static impedance of the center as a whole. The energy consumption of the center rod itself is relatively large during the working of the center rod. The minimum emission response of the medium-range center rod is difficult to reduce, and the cutting and hemostasis effect is relatively general.

[0003] In order to overcome the defects of the prior art, people have put forward various solutions through continuous exploration. For example, a torsional vibration type ultrasonic surgical knife system is disclosed in Chinese patent [application number: 201611034930.4]. The torsional vibration type ultrasonic surgical knife system comprises an ultrasonic assembly and a knife. The ultrasonic assembly comprises an ultrasonic transducer and an amplitude-varying rod. The ultrasonic transducer is used to generate an ultrasonic vibration signal. The amplitude-varying rod is used to amplify the amplitude of the ultrasonic vibration signal. The center of mass of the ultrasonic assembly deviates from the central axis of the ultrasonic assembly. However, this scheme is not suitable for endoscopic surgery. For the medium-range center rod required for endoscopic surgery, the front end of the working surface is still difficult to greatly weaken the concentrated output of the energy of the tip of the center beam in the use process, and it is still difficult to eliminate the reduction of the static impedance of the center as a whole. The energy consumption of the center rod itself is relatively large during the working of the center rod. The minimum emission response of the medium-range center rod is difficult to reduce, and the cutting and hemostasis effect is relatively general. SUMMARY

[0004] The purpose of the present application is to provide a medium-range type composite structure ultrasonic surgical knife center rod.

[0005] In order to achieve the above purpose, the following technical scheme is adopted in the present application:

[0006] A medium range type composite structure ultrasonic scalpel center rod, comprising a scalpel main body, a first center rod section, a second center rod section, a third center rod section, a fourth center rod section, a fifth center rod section, a sixth center rod section, a seventh center rod section, an eighth center rod section and a ninth center rod section are arranged on the scalpel main body, the ninth center rod section is connected with the scalpel main body, the first center rod section is provided with an anti-overflow amplification structure, the second center rod section is provided with a transverse wave internal stress control structure, the third center rod section is provided with an amplitude slowing structure, the fourth center rod section is provided with an energy transmission control structure, the fifth center rod section is provided with an energy transition structure, the sixth center rod section is provided with a transverse wave cancellation structure, the seventh center rod section is provided with a rear section amplitude amplification structure, the eighth center rod section is provided with a terminal transition zone, and the ninth center rod section is provided with a longitudinal and transverse wave stable output structure.

[0007] In the above-mentioned medium range type composite structure ultrasonic scalpel center rod, the anti-overflow amplification structure comprises a conical body, a first catenary body and an exponential structure body arranged on the first center rod section, the first catenary body is located between the conical body and the exponential structure body, and the first center rod section is further provided with a first ladder down structure.

[0008] In the above-mentioned medium range type composite structure ultrasonic scalpel center rod, the transverse wave internal stress control structure comprises a long ladder up structure arranged on the second center rod section.

[0009] In the above-mentioned medium range type composite structure ultrasonic scalpel center rod, the amplitude slowing structure comprises a first ladder up structure and a second ladder up structure arranged on the third center rod section.

[0010] In the above-mentioned medium range type composite structure ultrasonic scalpel center rod, the energy transmission control structure comprises a front section shared ladder structure arranged on the fourth center rod section, one end of the front section shared ladder structure is connected with the third center rod section, and the other end is connected with the fourth center rod section.

[0011] In the above-mentioned medium range type composite structure ultrasonic scalpel center rod, the fourth center rod section is further provided with a first Gaussian parabola structure body and a second Gaussian parabola structure body.

[0012] In the above-mentioned medium range type composite structure ultrasonic scalpel center rod, the energy transition structure comprises a third ladder up structure and a third Gaussian parabola structure body arranged on the fifth center rod section.

[0013] In the above-mentioned medium-range type composite structure ultrasonic surgical knife center rod, the transverse wave cancellation structure includes a fourth Gaussian parabola structure and a fifth Gaussian parabola structure arranged on the sixth center rod section, and a second step-down structure is arranged between the fifth center rod section and the sixth center rod section.

[0014] In the above-mentioned medium-range type composite structure ultrasonic surgical knife center rod, the rear section amplitude amplification structure includes a middle step-down structure arranged on the seventh center rod section.

[0015] In the above-mentioned medium-range type composite structure ultrasonic surgical knife center rod, the longitudinal and transverse wave stable output structure includes a second catenary-shaped body arranged on the ninth center rod section, and a long step-down structure is arranged between the eighth center rod section and the ninth center rod section.

[0016] Compared with the prior art, the advantages of the present application are that:

[0017] 1. The present application is applied to endoscopic surgery, adopts a medium-range center rod, realizes the effect that the energy of the center beam at the front end of the working surface of the center rod is reduced by 10-15 dB than that at the rear end, thereby greatly weakening the concentrated output of the energy of the tip of the center beam, eliminating the reduction of the static impedance of the center as a whole, reducing the energy consumption of the center rod itself when working (reducing the self-heating of the knife rod), greatly optimizing the minimum transmission response of the center rod, and greatly improving the effect of the center rod when cutting and hemostasis.

[0018] 2. The present application builds a model with a specific transmission response, so that the longitudinal wave energy of the center rod is much greater than the transverse wave energy, not only greatly weakening the influence of the transverse wave on the cutting of the center rod, but also effectively improving the hemostasis effect of the center rod, improving the uniformity of the horizontal energy, and effectively controlling the effective working surface of the center rod through the integrated design concept of the multiple sub-models, thereby improving the stability of the ultrasonic surgical knife.

[0019] Other advantages, objects and features of the present application will be partly embodied in the following description, and will be partly understood by those skilled in the art through research and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the present application.

[0021] Figure 2 is a structural schematic diagram of another direction of the present application.

[0022] Figure 3 is an amplitude curve distribution diagram of the present application.

[0023] In the figure: scalpel body 1, first center rod segment 2, second center rod segment 3, third center rod segment 4, fourth center rod segment 5, fifth center rod segment 6, sixth center rod segment 7, seventh center rod segment 8, eighth center rod segment 9, ninth center rod segment 10, anti-overflow amplification structure 11, transverse wave internal stress control structure 12, amplitude slowing structure 13, energy transmission control structure 14, energy transition structure 15, transverse wave cancellation structure 16, rear segment amplitude amplification structure 17, longitudinal and transverse wave stable output structure 18, conical body 19, first catenary body 20, exponential structure body 21, first ladder descending structure 22, long ladder ascending structure 23, first ladder ascending structure 24, second ladder ascending structure 25, front segment shared ladder structure 26, first Gaussian parabola structure 27, second Gaussian parabola structure 28, third ladder ascending structure 29, third Gaussian parabola structure 30, fourth Gaussian parabola structure 31, fifth Gaussian parabola structure 32, second ladder descending structure 33, middle ladder descending structure 34, second catenary body 35, long ladder descending structure 36. DETAILED DESCRIPTION

[0024] The application will be further described below in conjunction with the drawings.

[0025] As Figures 1-3 shown in the figure, a medium-range type composite structure ultrasonic scalpel center rod includes a scalpel body 1, the scalpel body 1 is provided with a first center rod segment 2, a second center rod segment 3, a third center rod segment 4, a fourth center rod segment 5, a fifth center rod segment 6, a sixth center rod segment 7, a seventh center rod segment 8, an eighth center rod segment 9 and a ninth center rod segment 10, the ninth center rod segment 10 is connected with the scalpel body 1, the first center rod segment 2 is provided with an anti-overflow amplification structure 11, the second center rod segment 3 is provided with a transverse wave internal stress control structure 12, the third center rod segment 4 is provided with an amplitude slowing structure 13, the fourth center rod segment 5 is provided with an energy transmission control structure 14, the fifth center rod segment 6 is provided with an energy transition structure 15, the sixth center rod segment 7 is provided with a transverse wave cancellation structure 16, the seventh center rod segment 8 is provided with a rear segment amplitude amplification structure 17, the eighth center rod segment 9 is provided with a terminal transition zone, and the ninth center rod segment 10 is provided with a longitudinal and transverse wave stable output structure 18.

[0026] In this embodiment, the center rod model is determined according to the requirements of working frequency, amplitude output, size control, horizontal dimension transmission response and other requirements, and the overall parabola structure of various forms (conical, exponential, catenary, Gaussian, etc.) is selected Wherein x represents the horizontal coordinate of the model, y represents the vertical coordinate of the model, A represents the model parameters, which determines the aspect ratio of the model, the center rod is composed of multiple (X half wavelength, X>0 and X is an integer) amplitude amplification or reduction structures, multiple structures are combined to meet the final overall structure design requirements,

[0027] Wherein the first center rod section 2 is to ensure that energy is fully transmitted from the transducer to the center rod, a large diameter change is made to the connected first half wavelength, in order to eliminate stress problems, an anti-overflow amplification structure 11 is selected for design, which fully transmits energy without overflow, also amplifies the energy amplitude, and is the first stage of amplitude amplification;

[0028] The second center rod section 3 is to ensure that energy is fully transmitted from the transducer to the center rod, effectively control the amplification of the transverse wave ratio, and also consider the imbalance of internal stress, this section is provided with a transverse wave internal stress control structure 12 to improve the amplification ratio before and after, and ensure the effective increase of the amplitude;

[0029] The third center rod section 4 is to ensure the effective growth of the amplitude, which needs to slowly amplify the amplitude to avoid the overflow of transverse waves, the amplitude slow-down structure 13 is adopted in this section to make the amplitude transition smoothly, and the amplitude slow-down structure 13 at the node can control stress concentration and avoid abnormal noise or tearing of the internal crystal structure of the metal during the operation of the center rod;

[0030] The fourth center rod section 5 is to ensure the effective growth of the amplitude, which belongs to the middle and rear section of the center rod, and the half wavelength structure is designed in this section, the amplitude gain amplification ratio is increased, which plays a good role in the amplification ratio of the center rod, and the energy transmission control structure 14 is arranged in this section to avoid energy transmission overflow and effectively transmit high-frequency energy waves. The half wavelength rear end does not amplify the high-frequency energy, and this section belongs to the middle section of the center rod, which mainly aims at the smooth transition of energy, that is, the energy transmission control structure 14 in the half wavelength rear section can effectively control the stability of high-frequency energy transmission, and also eliminates the transition amplification of transverse waves and reduces the tearing of the metal caused by internal stress;

[0031] The fifth center rod section 6 is to ensure the integrity of the overall amplitude transmission, and the energy transition structure 15 is adopted in this section, which belongs to the middle section of the center rod, to avoid energy transmission overflow and effectively transmit high-frequency energy waves, and the energy transition structure 15 can also take out internal stress to make the energy transition smoothly;

[0032] The sixth center rod section 7 is to ensure the integrity of the overall amplitude transmission, and the transverse wave cancellation structure 16 is adopted in this section, which belongs to the middle section of the center rod, to effectively transmit high-frequency energy waves and also cancel the transverse waves generated by high-frequency energy transmission, and the transverse wave cancellation structure 16 can also take out internal stress to make the energy transition smoothly;

[0033] The seventh center rod section 8 is mainly for amplifying the amplitude to ensure the effective increase of the amplitude, and also effectively slows down the amplification of the transverse wave to avoid the generation of abnormal sound, the half wavelength of the section adopts the rear section amplitude amplification structure 17, and the step ratio of the front half wavelength section and the rear half wavelength section is 2:1, to ensure the effective increase of the amplitude;

[0034] The eighth center rod section 9 is for ensuring the effective increase of the amplitude, and this section is not processed, and this section is the transition zone at the end;

[0035] The ninth center rod section 10 is for ensuring the stable output of energy, and at the end of the center rod, the longitudinal and transverse wave stable output structure 18 is adopted, so that the center rod obtains high-amplitude energy output, the stable output of high longitudinal wave and low transverse wave, and the cutting and coagulation effect on soft tissue is realized;

[0036] The model with a specific emission response is built, so that the longitudinal wave energy of the center rod is much larger than the transverse wave, not only greatly weakening the influence of the transverse wave on the cutting of the center rod, but also effectively improving the hemostatic effect of the center rod, improving the uniformity of the horizontal energy, and the integrated design concept of the multiple sub-models effectively controls the effective working surface of the center rod, and improves the stability of the ultrasonic scalpel,

[0037] The structure is applied to a laparoscopic surgery, a medium-range center rod is adopted, the energy of the center beam at the front end of the working surface of the center rod is reduced by 10-15 dB compared with the energy at the rear end, so that the concentrated output of the energy of the center beam at the tip is greatly weakened, the static impedance of the center rod as a whole is reduced, the energy consumption of the center rod itself during work is reduced (the self-heating of the knife rod is reduced), the minimum emission response of the center rod is greatly optimized, and the effect of the center rod during cutting and hemostasis is greatly improved.

[0038] In combination with Figure 1 , Figure 3 As shown in the figure, the anti-overflow amplification structure 11 comprises a conical body 19, a first catenary body 20 and an exponential structure body 21 arranged on the first center rod section 2, the first catenary body 20 is located between the conical body 19 and the exponential structure body 21, and the first center rod section 2 is also provided with a first step descending structure 22.

[0039] Specifically, according to Wherein x represents the horizontal coordinate of the model, y represents the vertical coordinate of the model, A represents the model parameter, which determines the longitudinal and transverse proportion relationship of the model, the center rod is composed of multiple (X half wavelength, X>0 and X is an integer) amplitude amplification or reduction structures, and multiple structures are combined to meet the design requirements of the final overall structure,

[0040] When X=1, in order to ensure that the energy is fully transmitted to the central rod by the transducer, the first central rod segment 2 has a large diameter change for the first half wavelength by setting the first step descending structure 22. In order to eliminate stress problems, three structural changes are selected: conical body 19, first catenary body 20 and exponential structure body 21. This design not only fully transmits energy without leakage, but also amplifies the energy amplitude, which is also the first stage of amplitude amplification.

[0041] Combination Figure 1 , Figure 3 As shown, the transverse wave internal stress control structure 12 includes a long stepped ascending structure 23 disposed on the second central rod segment 3.

[0042] In this embodiment, according to Where x represents the abscissa of the model, y represents the ordinate of the model, and A represents the model parameters, which determine the abscissa-ordinate relationship of the model. The central rod is composed of multiple structures with amplitude amplification or reduction (X half wavelength, X > 0 and X is an integer). The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0043] When X=2, the second central rod segment 3 is designed to ensure that the energy is fully transferred from the transducer to the central rod, effectively control the amplification of the transverse wave ratio, and consider the imbalance of internal stress. This half-wavelength section adopts a long stepped upward structure 23. The front and rear sections of the half-wavelength are 2 / 3 of the stepped end, and the tail section is thick, which improves the amplification ratio and ensures the effective increase of the amplitude.

[0044] The amplitude reduction structure 13 includes a first step upward structure 24 and a second step upward structure 25 disposed on the third central rod segment 4.

[0045] In this embodiment, according to Where x represents the abscissa of the model, y represents the ordinate of the model, and A represents the model parameters, which determine the abscissa-ordinate relationship of the model. The central rod is composed of multiple structures with amplitude amplification or reduction (X half wavelength, X > 0 and X is an integer). The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0046] When X=3, in order to ensure effective amplitude growth, the third central segment 4 needs to gradually increase the amplitude to avoid generating an overflow transverse wave. This segment adopts a half-wavelength front section stepped amplitude slowing design, which is the first step upward structure 24. The half-wavelength rear section adopts a composite stepped design, which is the second step upward structure 25, so that the amplitude transition is smooth.

[0047] Combination Figures 2-3As shown, the energy transmission control structure 14 includes a front shared ladder structure 26 arranged on the fourth central rod segment 5, one end of the front shared ladder structure 26 is connected with the third central rod segment 4, and the other end is connected with the fourth central rod segment 5, and the fourth central rod segment 5 is further provided with a first Gaussian parabola structure 27 and a second Gaussian parabola structure 28.

[0048] In the embodiment, according to wherein x represents the horizontal coordinate of the model, y represents the vertical coordinate of the model, A represents the model parameter, and determines the aspect ratio of the model, the central rod is composed of multiple (X half-wavelength, X>0 and X is an integer) amplitude amplification or reduction structures, and multiple structures are combined to achieve the final overall structure design requirement,

[0049] When X=4, the fourth central rod segment 5 is to ensure effective growth of the amplitude, and this segment belongs to the middle and rear segment of the central rod, and the half-wavelength structure is designed in this segment, the amplitude of this segment is enlarged by a gain amplification ratio, which plays a good role in the amplitude amplification ratio of the central rod, the front shared ladder structure 26 is designed in this segment, which avoids energy transmission overflow and effectively transmits high-frequency energy waves, the half-wavelength rear end does not amplify the high-frequency energy, this segment belongs to the middle segment of the central rod, and mainly aims at smooth transition of energy, that is, the half-wavelength rear end of this segment, two special parabolic designs are made, that is, the first Gaussian parabola structure 27 and the second Gaussian parabola structure 28, which effectively control the stability of high-frequency energy transmission, and also eliminate the transition amplification of transverse waves and reduce the metal tearing caused by internal stress.

[0050] The energy transition structure 15 includes a third ladder uplink structure 29 and a third Gaussian parabola structure 30 arranged on the fifth central rod segment 6.

[0051] In the embodiment, according to wherein x represents the horizontal coordinate of the model, y represents the vertical coordinate of the model, A represents the model parameter, and determines the aspect ratio of the model, the central rod is composed of multiple (X half-wavelength, X>0 and X is an integer) amplitude amplification or reduction structures, and multiple structures are combined to achieve the final overall structure design requirement,

[0052] When X=5, the fifth central rod segment 6 is to ensure the integrity of the overall amplitude transmission, and this segment structure also belongs to the middle segment of the central rod, the third ladder uplink structure 29 is arranged in the half-wavelength front segment of this segment, which avoids energy transmission overflow and effectively transmits high-frequency energy waves, and the third Gaussian parabola structure 30 is arranged near the node of the half-wavelength rear end of this segment, which can take out the internal stress and smoothly transition the energy.

[0053] In combination with Figures 2-3As shown, the transverse wave cancellation structure 16 includes a fourth Gaussian parabola structure 31 and a fifth Gaussian parabola structure 32 arranged on the sixth center rod segment 7, and a second step-down structure 33 is arranged between the fifth center rod segment 6 and the sixth center rod segment 7.

[0054] In this embodiment, according to wherein x represents the horizontal coordinate of the model, y represents the vertical coordinate of the model, A represents the model parameter, and determines the aspect ratio of the model, the center rod is composed of multiple (X half-wavelength, X>0 and X is an integer) amplitude amplification or reduction structures, and multiple structures are combined to achieve the final overall structure design requirement,

[0055] When X=6, the sixth center rod segment 7 is a middle segment of the center rod to ensure the integrity of the overall amplitude transmission. A composite design of a second step-down structure 33 of a half-wavelength front segment and a fourth Gaussian parabola structure 31 and a fifth Gaussian parabola structure 32 is adopted in this segment, that is, the high-frequency energy wave is effectively transmitted, and the transverse wave generated by the high-frequency energy transmission is also cancelled. The fourth Gaussian parabola structure 31 and the fifth Gaussian parabola structure 32 near the node of the half-wavelength rear segment of this segment can take out internal stress, so that the energy can be smoothly transmitted.

[0056] In combination with Figures 1-3 As shown, the rear segment amplitude amplification structure 17 includes a middle step-down structure 34 arranged on the seventh center rod segment 8.

[0057] In this embodiment, according to wherein x represents the horizontal coordinate of the model, y represents the vertical coordinate of the model, A represents the model parameter, and determines the aspect ratio of the model, the center rod is composed of multiple (X half-wavelength, X>0 and X is an integer) amplitude amplification or reduction structures, and multiple structures are combined to achieve the final overall structure design requirement,

[0058] When X=7, the seventh center rod segment 8 is to ensure effective increase of the amplitude. This segment mainly amplifies the amplitude, and also effectively reduces the amplification of the transverse wave to avoid the generation of abnormal sound. The half-wavelength of this segment adopts a middle step-down structure 34, and the step ratio of the half-wavelength front segment and the half-wavelength rear segment is 2:1, which ensures effective increase of the amplitude.

[0059] In combination with Figures 2-3 As shown, the longitudinal and transverse wave stable output structure 18 includes a second catenary body 35 arranged on the ninth center rod segment 10, and a long step-down structure 36 is arranged between the eighth center rod segment 9 and the ninth center rod segment 10.

[0060] In this embodiment, according to Wherein x represents the horizontal coordinate of the model, y represents the vertical coordinate of the model, A represents the model parameter, which determines the vertical and horizontal proportion relationship of the model, the center rod is composed of multiple (X half wavelength, X>0 and X is an integer) amplitude amplification or reduction structures, multiple structures are combined to meet the final overall structure design requirements,

[0061] When X=8, the eighth center rod segment 9 is not processed to ensure effective growth of amplitude, and this segment is the transition zone of the end;

[0062] When X=9, the ninth center rod segment 10 is used to ensure stable energy output, and at the end of the center rod, a half-wavelength long ladder down structure 36 and a large-scale amplification catenary design, i.e., a second catenary body 35, are adopted, so that the center rod obtains high-amplitude energy output, and stable output of high longitudinal waves and low transverse waves, thereby realizing cutting and coagulation effect on soft tissues.

[0063] The first ladder down structure 22, the long ladder up structure 23, the first ladder up structure 24, the second ladder up structure 25, the third ladder up structure 29, the second ladder down structure 33, the medium ladder down structure 34 and the long ladder down structure 36 mentioned in the application are shown in the drawings of the specification Figure 2 From left to right, the representation of the down structure is that the diameter of the left rod body is larger than that of the right rod body, forming a left large and right small ladder shape, and from left to right, the representation of the up structure is that the diameter of the left rod body is smaller than that of the right rod body, forming a left small and right large ladder shape, and the length of the formed ladder structure is different, and the effect achieved is also different.

[0064] The working principle of the application is as follows:

[0065] According to Wherein x represents the horizontal coordinate of the model, y represents the vertical coordinate of the model, A represents the model parameter, which determines the vertical and horizontal proportion relationship of the model, the center rod is composed of multiple (X half wavelength, X>0 and X is an integer) amplitude amplification or reduction structures, multiple structures are combined to meet the final overall structure design requirements,

[0066] When X=1, the first center rod segment 2 is used to ensure that energy is fully transmitted to the center rod by the transducer, and for the connected first half wavelength, a first ladder down structure 22 is arranged to change the diameter greatly, and in order to eliminate stress problems, three structure change designs of a conical body 19, a first catenary body 20 and an exponential structure body 21 are selected, which not only fully transmit energy without overflow, but also amplify the energy amplitude, and it is the first stage of amplitude amplification,

[0067] When X = 2, the second center rod segment 3 is to ensure that the energy is fully transmitted from the transducer to the center rod, effectively control the transverse wave ratio of amplification, while considering the imbalance of internal stress, this section half wave length adopts long ladder uplink structure 23, 2 / 3 of the half wave length front section and the half wave length rear section are the thin end of the ladder, and the tail adopts a thick section to improve the front and rear amplification ratio and ensure effective increase of the amplitude,

[0068] When X = 3, the third center rod segment 4 is to ensure effective growth of the amplitude, and this segment needs to slowly amplify the amplitude to avoid energy overflow transverse wave, the structure of this segment adopts half wave length front section ladder amplitude slow design, i.e. first ladder uplink structure 24, and the half wave length rear end adopts composite ladder type design, i.e. second ladder uplink structure 25, so that the amplitude transitions smoothly,

[0069] When X = 4, the fourth center rod segment 5 is to ensure effective growth of the amplitude, and this segment belongs to the middle and rear section of the center rod, and the half wave length structure design is adopted in this section, the amplitude of this section is amplified by the gain amplification ratio, which plays a good role in the amplitude amplification ratio of the center rod, this section adopts half wave length front section and the ladder design shared with the last section, i.e. front section shared ladder structure 26, to avoid energy transmission overflow and effectively transmit high-frequency energy wave, and the half wave length rear end does not amplify the high-frequency energy, this section belongs to the middle section of the center rod, mainly for the smooth transition of energy, i.e. the half wave length rear section of this section, which is designed with two special parabolic lines, i.e. first Gaussian parabolic structure 27 and second Gaussian parabolic structure 28, to effectively control the stability of high-frequency energy transmission, and also eliminate the transition amplification of transverse wave and reduce the metal tearing caused by internal stress,

[0070] When X = 5, the fifth center rod segment 6 is to ensure the integrity of the overall amplitude transmission, and the structure of this section also belongs to the middle section of the center rod, this section adopts half wave length front section third ladder uplink structure 29 to avoid energy transmission overflow and effectively transmit high-frequency energy wave, and the third Gaussian parabolic structure 30 near the node of this section half wave length rear section can take out internal stress to make the energy transition smoothly,

[0071] When X = 6, the sixth center rod segment 7 is to ensure the integrity of the overall amplitude transmission, and the structure of this section also belongs to the middle section of the center rod, this section adopts half wave length front section second ladder downlink structure 33 and the composite design formed by fourth Gaussian parabolic structure 31 and fifth Gaussian parabolic structure 32, i.e. effectively transmitting high-frequency energy wave while also offsetting the transverse wave generated by high-frequency energy transmission, and the fourth Gaussian parabolic structure 31 and fifth Gaussian parabolic structure 32 near the node of this section half wave length rear section can take out internal stress to make the energy transition smoothly,

[0072] When X=7, the seventh center rod segment 8 is to ensure the effective increase of amplitude, this segment is mainly to amplify the amplitude, and also effectively slow down the amplification of the transverse wave to avoid the generation of abnormal sound, the half wavelength of this segment adopts a middle step downlink structure 34, the step ratio of the half wavelength front segment and the half wavelength rear segment is 2:1, to ensure the effective increase of the amplitude,

[0073] When X=8, the eighth center rod segment 9 is to ensure the effective increase of amplitude, this segment is not processed, and this segment is the transition zone at the end;

[0074] When X=9, the ninth center rod segment 10 is to ensure the stable output of energy, at the end of the center rod, a half wavelength long step downlink structure 36 and a large proportion of amplification catenary design, i.e., a second catenary body 35, are adopted, so that the center rod obtains high-amplitude energy output, stable output of high longitudinal wave and low transverse wave, thereby realizing the cutting and coagulation effect on soft tissue,

[0075] The present application builds a model with a specific emission response, so that the longitudinal wave energy of the center rod is much larger than the transverse wave, not only greatly weakening the influence of the transverse wave on the cutting of the center rod, but also effectively improving the hemostatic effect of the center rod, improving the uniformity of the horizontal energy, and the integrated design concept of the multi-sub model effectively controls the effective working surface of the center rod, and improves the stability of the ultrasonic scalpel,

[0076] This structure is applied to a laparoscopic surgery, a middle-range center rod is adopted, an effect that the energy of the center beam at the front end of the working surface of the center rod is reduced by 10-15 dB than the energy of the center beam at the rear end is realized, thereby greatly weakening the concentrated output of the energy of the center beam at the tip, eliminating the reduction of the static impedance of the center as a whole, reducing the energy consumption of the center rod itself when working (reducing the self-heating of the knife rod), greatly optimizing the minimum emission response of the center rod, and greatly improving the effect of the center rod when cutting and hemostasis.

[0077] The specific embodiments described in the present application are only illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without departing from the spirit of the present application.

[0078] Although the terms scalpel body 1, first central rod segment 2, second central rod segment 3, third central rod segment 4, fourth central rod segment 5, fifth central rod segment 6, sixth central rod segment 7, seventh central rod segment 8, eighth central rod segment 9, ninth central rod segment 10, anti-overflow amplification structure 11, transverse wave internal stress control structure 12, amplitude slowing structure 13, energy transmission control structure 14, energy transition structure 15, transverse wave cancellation structure 16, rear segment amplitude amplification structure 17, longitudinal and transverse wave stable output structure 18, conical body 19, first catenary body 20, exponential structure body 21, first ladder descending structure 22, long ladder ascending structure 23, first ladder ascending structure 24, second ladder ascending structure 25, front segment shared ladder structure 26, first Gaussian parabola structure 27, second Gaussian parabola structure 28, third ladder ascending structure 29, third Gaussian parabola structure 30, fourth Gaussian parabola structure 31, fifth Gaussian parabola structure 32, second ladder descending structure 33, middle ladder descending structure 34, second catenary body 35, long ladder descending structure 36 are used more frequently in this document, the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application, and any additional limitation is contrary to the spirit of the present application.

Claims

1. A medium range composite structural ultrasonic scalpel center rod, comprising a scalpel body (1), characterized in that, The surgical knife body (1) is sequentially provided with a first center rod section (2), a second center rod section (3), a third center rod section (4), a fourth center rod section (5), a fifth center rod section (6), a sixth center rod section (7), a seventh center rod section (8), an eighth center rod section (9) and a ninth center rod section (10), the ninth center rod section (10) is connected with the surgical knife body (1), the first center rod section (2) is provided with an anti-overflow amplification structure (11), the second center rod section (3) is provided with a transverse wave internal stress control structure (12), the third center rod section (4) is provided with an amplitude slowing structure (13), the fourth center rod section (5) is provided with an energy transmission control structure (14), the fifth center rod section (6) is provided with an energy transition structure (15), the sixth center rod section (7) is provided with a transverse wave cancellation structure (16), the seventh center rod section (8) is provided with a rear section amplitude amplification structure (17), the eighth center rod section (9) is provided with a terminal transition zone, and the ninth center rod section (10) is provided with a longitudinal and transverse wave stable output structure (18). The anti-overflow amplification structure (11) comprises a conical body (19), a first catenary body (20) and an exponential structure body (21) arranged on the first center rod section (2), the first catenary body (20) is located between the conical body (19) and the exponential structure body (21), and the first center rod section (2) is further provided with a first ladder down structure (22). The transverse wave internal stress control structure (12) comprises a long ladder up structure (23) arranged on the second center rod section (3). The longitudinal and transverse wave stable output structure (18) comprises a second catenary body (35) arranged on the ninth center rod section (10), and a long ladder down structure (36) is arranged between the eighth center rod section (9) and the ninth center rod section (10).

2. A mid-range composite structural ultrasonic surgical tool center rod as defined in claim 1, wherein, The amplitude slowing structure (13) comprises a first ladder up structure (24) and a second ladder up structure (25) arranged on the third center rod section (4).

3. A center rod for a mid-range composite structural ultrasonic surgical blade according to claim 1, wherein The energy transmission control structure (14) comprises a front section shared ladder structure (26) arranged on the fourth center rod section (5), one end of the front section shared ladder structure (26) is connected with the third center rod section (4), and the other end is connected with the fourth center rod section (5).

4. A mid-range composite structural ultrasonic surgical tool center rod as defined in claim 3, wherein, The fourth center rod section (5) is further provided with a first Gaussian parabola structure body (27) and a second Gaussian parabola structure body (28).

5. A mid-range composite structural ultrasonic surgical tool center rod as defined in claim 1, wherein, The energy transition structure (15) comprises a third ladder up structure (29) and a third Gaussian parabola structure body (30) arranged on the fifth center rod section (6).

6. A mid-range composite structural ultrasonic surgical tool center rod as defined in claim 1, wherein, The transverse wave cancellation structure (16) comprises a fourth Gaussian parabola structure body (31) and a fifth Gaussian parabola structure body (32) arranged on the sixth center rod section (7), and a second ladder down structure (33) is arranged between the fifth center rod section (6) and the sixth center rod section (7).

7. A mid-range composite structural ultrasonic surgical tool center rod as defined in claim 1, wherein, The rear section amplitude amplification structure (17) comprises a sub-mesa down structure (34) arranged on the seventh center rod section (8).

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