A medium-long type composite structure ultrasonic surgical knife center rod

Abstract

The application belongs to the technical field of medical apparatus and instruments, and particularly relates to a medium-long 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, a ninth center rod section, a tenth center rod section and an eleventh center rod section. The application is applied to single-hole surgery, adopts a medium-long composite structure center rod, and the difference in the length of the center rod needs to reduce the difference in indexes, so that the medium-long composite structure center rod can realize the effect that the energy of the front end center beam is reduced by 8-12 dB compared with the rear end beam, thereby greatly reducing the center static impedance and achieving instant dehydration and coagulation of tissues.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology and relates to a medium-length composite structure ultrasonic surgical knife center rod. Background Technology

[0002] For single-port surgical procedures, medical staff need to use a medium-length composite structure center rod, and the length of the center rod is strictly required for single-port surgery. Ultrasonic scalpels, due to their advantages of incision cleaning, clear layered cutting, hemostasis, minimal thermal damage, low smoke production, and multi-functionality, are increasingly widely used in various clinical applications. In single-port surgery, ultrasonic scalpels must be used in conjunction with medium-length composite structure center rods. Currently used ultrasonic scalpels with medium-length composite structure center rods struggle to achieve the effect of reducing the energy of the central beam at the working face by 8-12 dB compared to the rear beam, making it difficult to significantly reduce the central static impedance, and resulting in only moderate effects on instantaneous tissue dehydration and coagulation.

[0003] To overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, Chinese patent discloses an ultrasonic scalpel transducer and surgical instrument [Application No.: 201921452904.2]. This ultrasonic scalpel transducer includes a torsional and longitudinal vibration ultrasonic generator and a scalpel rod. The torsional and longitudinal vibration ultrasonic generator is used to simultaneously generate torsional and longitudinal vibration ultrasonic waves. The torsional and longitudinal vibration ultrasonic generator includes an amplitude transformer and an ultrasonic wave generating device. The scalpel rod is set on the amplitude transformer, and the center of gravity of the ultrasonic scalpel transducer is on the central axis of the ultrasonic scalpel transducer. However, this solution is not suitable for single-port surgery. In single-port surgery, it is still difficult to achieve the effect of reducing the energy of the central beam at the front end of the working rod of the medium-length composite structure by 8-12 dB compared with that of the rear end beam. Its central static impedance is still difficult to reduce significantly, and there are shortcomings in the effect of relatively general tissue dehydration and coagulation. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a medium-length composite structure ultrasonic surgical scalpel center rod.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] A medium-length composite structure ultrasonic surgical scalpel has a central rod, comprising a scalpel body, and the scalpel body having a first central rod segment, a second central rod segment, a third central rod segment, a fourth central rod segment, a fifth central rod segment, a sixth central rod segment, a seventh central rod segment, an eighth central rod segment, a ninth central rod segment, a tenth central rod segment, and an eleventh central rod segment. The eleventh central rod segment is connected to the scalpel body. The first central rod segment has a stress-reducing amplification structure, the second central rod segment has a longitudinal wave transmission structure, the third central rod segment has an energy inheritance structure, the fourth central rod segment has an anti-overflow structure, the fifth central rod segment has an energy transition structure, the sixth central rod segment has an amplitude transmission structure, the seventh central rod segment has a front transition structure, the eighth central rod segment has an end transition zone, the ninth central rod segment has an anti-noise structure, and the eleventh central rod segment has an energy output structure.

[0007] In the aforementioned medium-length composite structure ultrasonic surgical knife central rod, the stress-relieving and amplifying structure includes a conical body, a first catenary body, and an exponential structure body disposed on the first central rod segment. The first catenary body is located between the conical body and the exponential structure body, and the first central rod segment is also provided with a first stepped descending structure.

[0008] In the aforementioned medium-length composite structure ultrasonic surgical knife central rod, the longitudinal wave transmission structure includes a first long stepped ascending structure disposed on the second central rod segment.

[0009] In the aforementioned medium-length composite ultrasonic scalpel central rod, the energy inheritance structure includes a first Gaussian parabolic structure disposed on the third central rod segment.

[0010] In the aforementioned medium-length composite structure ultrasonic scalpel central rod, the anti-overflow structure includes a front and rear double parabolic body and a second Gaussian parabolic structure disposed on the fourth central rod segment.

[0011] In the aforementioned medium-length composite structure ultrasonic surgical scalpel central rod, the energy transition structure includes a second step descending structure disposed on the fifth central rod segment.

[0012] In the aforementioned medium-length composite ultrasonic scalpel central rod, the amplitude transmission structure includes a long stepped descending structure disposed on the sixth central rod segment.

[0013] In the aforementioned medium-length composite structure ultrasonic surgical knife central rod, the front transition structure includes a second long stepped ascending structure disposed on the seventh central rod segment.

[0014] In the aforementioned medium-length composite ultrasonic surgical knife central rod, the noise prevention structure includes a stepped descending structure disposed on the ninth central rod segment.

[0015] In the aforementioned medium-length composite structure ultrasonic surgical scalpel central rod, the energy output structure includes a half-wavelength stepped structure and a second catenary-like body disposed on the eleventh central rod segment.

[0016] Compared with existing technologies, the advantages of this invention are:

[0017] 1. This invention is applied to single-port surgery and adopts a medium-length composite structure center rod. Due to the difference in the length of the center rod, the indicators that need to be reduced are different. It can achieve the effect of reducing the energy of the center beam at the front end of the working face of the medium-length composite structure center rod by 8-12dB compared with the energy of the rear end beam, thereby significantly reducing the central static impedance and achieving instantaneous tissue dehydration and coagulation.

[0018] 2. This invention realizes the integrated algorithm design of central rod amplitude, frequency and stress, which greatly reduces the problem of external interference in practical applications, significantly reduces the processing defect rate and improves the production yield.

[0019] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure from another direction of the present invention.

[0022] Figure 3 This is the amplitude curve distribution diagram of the present invention.

[0023] In the diagram: 1. Scalpel body; 2. First central segment; 3. Second central segment; 4. Third central segment; 5. Fourth central segment; 6. Fifth central segment; 7. Sixth central segment; 8. Seventh central segment; 9. Eighth central segment; 10. Ninth central segment; 11. Tenth central segment; 12. Eleventh central segment; 13. Stress-relieving amplification structure; 14. Longitudinal wave transmission structure; 15. Energy inheritance structure; 16. Anti-spillover structure; 17. Energy transition structure; 18. Amplitude transmission structure; 19. Front transition structure. Noise-proof structure 20, energy output structure 21, conical body 22, first catenary body 23, exponential structure 233, first step descending structure 24, first long step ascending structure 25, first Gaussian parabola structure 26, front and rear double parabolic body 27, second Gaussian parabola structure 28, second step descending structure 29, long step descending structure 30, second long step ascending structure 31, medium step descending structure 32, half-wavelength step structure 33, second catenary body 34. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1-3 As shown, a medium-length composite ultrasonic scalpel has a central rod, including a scalpel body 1. The scalpel body 1 has a first central rod segment 2, a second central rod segment 3, a third central rod segment 4, a fourth central rod segment 5, a fifth central rod segment 6, a sixth central rod segment 7, a seventh central rod segment 8, an eighth central rod segment 9, a ninth central rod segment 10, a tenth central rod segment 11, and an eleventh central rod segment 12. The eleventh central rod segment 12 is connected to the scalpel body 1. The first central rod segment 2 has a stress-relief amplification structure 13. The second central rod... The third central pole segment 3 is provided with a longitudinal wave transmission structure 14, the third central pole segment 4 is provided with an energy inheritance structure 15, the fourth central pole segment 5 is provided with an anti-overflow structure 16, the fifth central pole segment 6 is provided with an energy transition structure 17, the sixth central pole segment 7 is provided with an amplitude transmission structure 18, the seventh central pole segment 8 is provided with a front transition structure 19, the eighth central pole segment 9 is provided with an end transition zone, the ninth central pole segment 10 is provided with an anti-noise structure 20, and the eleventh central pole segment 12 is provided with an energy output structure 21.

[0026] In this embodiment, the central rod model is determined based on the required operating frequency, amplitude output, size control, and horizontal dimension emission response, and various overall parabolic structures such as conical, exponential, catenary, and Gaussian shapes are selected. 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 X half-wavelength, X>0 and X is an integer amplitude amplification or reduction structure. The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0027] In order to ensure that the energy is fully transferred from the transducer to the center rod, the first central rod segment 2 is equipped with a stress relief amplification structure 13 to make a large diameter change for the first half wavelength. In order to eliminate the stress problem, the design of the stress relief amplification structure 13 not only fully transfers the energy without leakage, but also amplifies the energy amplitude, which is also the first stage of amplitude amplification.

[0028] To ensure that energy is fully transferred from the transducer to the center rod in the second central rod section 3, and to effectively control the amplification of the transverse wave ratio, while considering the imbalance of internal stress, the longitudinal wave transmission structure 14 is adopted for the half-wavelength of this section. The first 1 / 4 of the half-wavelength is designed with a stepped structure to improve the amplification ratio before and after, and to effectively prevent the generation of transverse waves, ensuring effective longitudinal wave transmission and ensuring the effective increase of amplitude.

[0029] To ensure effective amplitude growth, the third central segment 4 needs to effectively inherit the energy transfer from the previous segment and prevent the generation of transverse waves. This segment does not amplify the amplitude. At the end of this segment, by setting an energy inheritance structure 15, energy leakage is effectively prevented, and longitudinal waves are effectively transmitted.

[0030] To ensure effective amplitude growth, the fourth central segment 5 must prevent energy leakage and the generation of transverse waves while ensuring an effective increase in amplitude. This segment is equipped with an anti-leakage structure 16 to offset the stress changes caused by amplitude amplification.

[0031] To ensure the integrity of the overall amplitude transmission and to ensure the effective inheritance of the structural changes of the previous section, the fifth central segment 6 does not undergo structural changes in the first half-wavelength section. The amplified energy of the previous section is smoothly transitioned without generating transverse waves. At the end of the half-wavelength section, an energy transition structure 17 is set to amplify the energy amplitude again, ensuring the smooth transition of the previous structure. At the same time, the amplitude of the entire segment is amplified at the end, so that the longitudinal wave is effectively transmitted.

[0032] To ensure the integrity of the overall amplitude transmission, the sixth central rod segment 7 is the middle section of the central rod. This segment needs to support the energy stability of the entire structure. By setting the amplitude transmission structure 18 in the middle section, the stability of the overall structure is achieved, and the transverse waves generated by the two boundaries are offset, thus ensuring the effective increase of amplitude.

[0033] To ensure stable energy output and to ensure that the front structure changes significantly and effectively inherits the front structure, the seventh central pole segment 8 is equipped with a front transition structure 19 to ensure that the changes in the front section are effectively transitioned and that the structural energy of the front section is effectively transferred.

[0034] To ensure effective amplitude growth, the eighth central segment 9 is left untreated; this segment is the end transition zone.

[0035] To ensure effective amplitude growth, the ninth central segment 10 mainly amplifies the amplitude while also effectively slowing down the amplification of the transverse wave to avoid abnormal noise. The half-wavelength of this section is equipped with an anti-noise structure 20 to ensure effective amplitude increase.

[0036] To ensure effective amplitude growth, the tenth central segment 11 is designed to guarantee the quality of the tail end, and no amplitude variation design is made for this segment.

[0037] To ensure stable energy output, the eleventh central rod segment 12 has an energy output structure 21 at its end, which enables the central rod to achieve high-amplitude energy output, high longitudinal wave and low transverse wave stable output, thereby achieving the cutting and coagulation effect on soft tissue.

[0038] This invention constructs a model with a specific emission response, ensuring that the longitudinal wave energy of the central rod is significantly greater than that of the transverse wave. This not only greatly reduces the impact of the transverse wave on the cutting action of the central rod but also effectively improves the hemostasis effect of the central rod and enhances the uniformity of horizontal energy. Furthermore, the integrated design concept of multiple sub-models effectively controls the effective working surface of the central rod, thereby improving the stability of the ultrasonic scalpel.

[0039] This structure is used in single-port surgery and adopts a medium-length composite structure center rod. Due to the difference in the length of the center rod, the indicators that need to be reduced are different. It can achieve the effect of reducing the energy of the center beam at the front end of the working face of the medium-length composite structure center rod by 8-12dB compared with the energy of the rear end beam, thereby significantly reducing the central static impedance and achieving instantaneous tissue dehydration and coagulation.

[0040] Combination Figure 1 , Figure 3 As shown, the stress-relieving amplification structure 13 includes a conical body 22, a first catenary body 23 and an exponential structure body 233 disposed on the first central rod segment 2. The first catenary body 23 is located between the conical body 22 and the exponential structure body 233. The first central rod segment 2 is also provided with a first stepped descending structure 24.

[0041] Specifically, 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 X half-wavelength, X>0 and X is an integer amplitude amplification or reduction structure. The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0042] When X=1, in order to ensure that the energy is fully transferred from the transducer to the central rod, the first central rod segment 2 is equipped with a first step descending structure 24, which makes a large diameter change for the first half wavelength connected. In order to eliminate stress problems, three structural changes are selected: conical body 22, first catenary body 23 and exponential structure body 233. This design not only fully transfers energy without leakage, but also amplifies the energy amplitude, which is also the first stage of amplitude amplification.

[0043] Combination Figure 2 , Figure 3 As shown, the longitudinal wave transmission structure 14 includes a first long stepped ascending structure 25 disposed on the second central rod segment 3.

[0044] 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 X half-wavelength, X>0 and X is an integer amplitude amplification or reduction structure. The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0045] When X=2, the second central rod segment 3 ensures that the energy is fully transferred from the transducer to the central rod, effectively controls the amplification of the transverse wave ratio, and considers the imbalance of internal stress. This half-wave section adopts the first long step upward structure 25. The first 1 / 4 of the half-wave section adopts a step structure design to improve the amplification ratio before and after, and effectively prevents the generation of transverse waves, ensuring effective transmission of longitudinal waves and ensuring the effective increase of amplitude.

[0046] The energy inheritance structure 15 includes a first Gaussian parabolic structure 26 disposed on the third central rod segment 4.

[0047] 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 X half-wavelength, X>0 and X is an integer amplitude amplification or reduction structure. The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0048] When X=3, in order to ensure the effective growth of amplitude, the third central segment 4 needs to effectively inherit the energy transfer of the previous segment and prevent the generation of transverse waves. This segment does not amplify the amplitude. At the end of this segment, the first Gaussian parabolic structure 26 is designed to effectively prevent energy leakage and enable the effective transmission of longitudinal waves.

[0049] Combination Figure 2-3 As shown, the anti-overflow structure 16 includes a front and rear double parabolic body 27 and a second Gaussian parabolic structure 28 disposed on the fourth central rod segment 5.

[0050] 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 X half-wavelength, X>0 and X is an integer amplitude amplification or reduction structure. The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0051] When X=4, in order to ensure the effective increase of amplitude, the fourth central segment 5 must prevent energy leakage and generate transverse waves, and also ensure the effective increase of amplitude. This segment adopts a front and rear double parabolic structure design, that is, by setting front and rear double parabolic bodies 27. The central end adopts a unique small parabolic structure design, that is, by setting a second Gaussian parabolic structure 28, to offset the stress changes caused by amplitude amplification.

[0052] The energy transition structure 17 includes a second step descending structure 29 disposed on the fifth central pole segment 6.

[0053] 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 X half-wavelength, X>0 and X is an integer amplitude amplification or reduction structure. The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0054] When X=5, the fifth central segment 6, in order to ensure the integrity of the overall amplitude transmission and to ensure the effective inheritance of the structural changes of the previous segment, does not make any structural changes in the first half-wavelength segment. The amplified energy of the previous segment is smoothly transitioned without generating transverse waves. At the end of the first half-wavelength segment, the energy amplitude is amplified again by setting the second step descending structure 29, which ensures the smooth transition of the previous segment structure and also amplifies the amplitude of the entire segment at the end, so that the longitudinal wave is effectively transmitted.

[0055] Combination Figure 2-3 As shown, the amplitude transmission structure 18 includes a long stepped descending structure 30 disposed on the sixth central rod segment 7.

[0056] 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 X half-wavelength, X>0 and X is an integer amplitude amplification or reduction structure. The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0057] When X=6, the sixth central rod segment 7 is designed to ensure the integrity of the overall amplitude transmission. This segment is the middle section of the central rod and needs to support the energy stability of the entire structure. A dumbbell structure design is adopted in the middle section to achieve the stability of the overall structure and to offset the transverse waves generated by the two boundaries. At the end of this segment, a long stepped descending structure 30 is set, which adopts a 1 / 19 wavelength stepped structure design to ensure the effective increase of amplitude.

[0058] Combination Figure 1-3 As shown, the front transition structure 19 includes a second long stepped ascending structure 31 disposed on the seventh central pole segment 8.

[0059] 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 X half-wavelength, X>0 and X is an integer amplitude amplification or reduction structure. The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0060] When X=7, in order to ensure stable energy output, the seventh central pole segment 8 is equipped with a second long step upward structure 31 to ensure that the front structure changes significantly and effectively inherits the front structure.

[0061] Combination Figure 2-3 As shown, the noise prevention structure 20 includes a middle step descending structure 32 installed on the ninth central pole segment 10.

[0062] 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 X half-wavelength, X>0 and X is an integer amplitude amplification or reduction structure. The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0063] When X=8, the ninth central segment 10 is left untreated to ensure effective amplitude growth. This segment is the end transition zone.

[0064] When X=9, the ninth central segment 10 is designed to ensure effective amplitude growth. This segment mainly amplifies the amplitude while also effectively slowing down the amplification of the transverse wave to avoid abnormal noise. The half-wavelength of this segment is achieved by setting a mid-step descending structure 32. The step ratio between the front and rear half-wavelength segments is 2:1, which ensures an effective increase in amplitude.

[0065] Combination Figure 1-2 As shown, the energy output structure 21 includes a half-wavelength stepped structure 33 and a second catenary 34 disposed on the eleventh central rod segment 12.

[0066] 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 X half-wavelength, X>0 and X is an integer amplitude amplification or reduction structure. The combination of multiple structures achieves the final overall structural design requirements and is a fusion of multiple structural forms.

[0067] When X = 10, in order to ensure the effective increase of amplitude, the tenth central segment 11 is designed to ensure the mass of the tail end, and no amplitude change design is made for this segment.

[0068] When X=11, in order to ensure stable energy output, the eleventh central rod segment 12 has a half-wavelength stepped structure 33 and a second catenary 34 set at the end of the central rod, so that the central rod can obtain high-amplitude energy output, high longitudinal wave and low transverse wave stable output, thereby achieving the cutting and coagulation effect on soft tissue.

[0069] The first step descending structure 24, the first long step ascending structure 25, the second step descending structure 29, the long step descending structure 30, the second long step ascending structure 31, and the middle step descending structure 32 mentioned in this invention are described in the accompanying drawings. Figure 2 As shown, viewed from left to right, the downward structure is represented by the left rod having a larger diameter than the right rod, forming a stepped shape with the left side larger than the right. The upward structure is represented by the left rod having a smaller diameter than the right rod, forming a stepped shape with the left side smaller than the right. "Length" and "middle" are adjectives used to distinguish them. Different lengths of the stepped structures result in different effects.

[0070] The working principle of this invention is:

[0071] 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.

[0072] When X=1, to ensure that energy is fully transferred from the transducer to the central rod, the first central rod segment 2 incorporates a first-step descending structure 24. This structure significantly alters the diameter of the connected first half-wavelength. To eliminate stress issues, three structural variations are employed: a conical body 22, a first catenary body 23, and an exponential structure 233. This design not only ensures efficient energy transfer without leakage but also amplifies the energy amplitude, representing the first stage of amplitude amplification.

[0073] When X=2, the second central rod segment 3, to ensure that energy is fully transferred from the transducer to the central rod and effectively control the amplification of the transverse wave ratio, while also considering the imbalance of internal stress, adopts a first long stepped upward structure 25 for the half-wavelength. The first 1 / 4 of the half-wavelength uses a stepped structure design to improve the amplification ratio before and after, and effectively prevent the generation of transverse waves, ensuring effective longitudinal wave transmission and ensuring an effective increase in amplitude.

[0074] When X=3, the third central segment 4, to ensure effective amplitude growth, needs to effectively inherit the energy transfer from the preceding segment and prevent the generation of transverse waves. Therefore, this segment does not amplify the amplitude. At the end of this segment, a first Gaussian parabolic structure 26 is designed to effectively prevent energy leakage and ensure effective transmission of longitudinal waves.

[0075] When X=4, the fourth central segment 5, to ensure effective amplitude growth, must both prevent energy leakage and the generation of transverse waves, and guarantee an effective increase in amplitude. This segment employs a double parabolic structure design, namely, by setting up double parabolic bodies 27 at the front and rear. The central end adopts a unique small parabolic structure design, namely, by setting up a second Gaussian parabolic structure 28, to offset the stress changes caused by amplitude amplification.

[0076] When X=5, the fifth central segment 6, to ensure the integrity of the overall amplitude transmission and to effectively inherit the structural changes of the preceding segment, undergoes no structural changes in the first half-wavelength section. The amplified energy transitions smoothly without generating transverse waves. At the end of this half-wavelength section, a second-step descending structure 29 is installed to further amplify the energy amplitude, ensuring a smooth transition of the preceding structure. Simultaneously, the entire amplitude is amplified at the end, enabling effective transmission of longitudinal waves.

[0077] When X=6, the sixth central rod segment 7, to ensure the integrity of the overall amplitude transmission, is located in the middle section of the central rod. This segment needs to support the energy stability of the entire structure. A dumbbell structure design is adopted in the middle section to achieve the stability of the overall structure and to counteract the transverse waves generated by the two boundaries. At the end of this segment, a long stepped descending structure 30 is set, using a 1 / 19 wavelength stepped structure design to ensure an effective increase in amplitude.

[0078] When X=7, to ensure stable energy output, the seventh central segment 8 is equipped with a second long stepped upward structure 31, which ensures that the preceding structure can be significantly altered and effectively inherit the preceding structure.

[0079] When X = 8, the ninth central segment 10 is left untreated to ensure effective amplitude growth; this segment is the end transition zone.

[0080] When X=9, the ninth central segment 10, to ensure effective amplitude growth, primarily amplifies the amplitude while also effectively mitigating transverse wave amplification to avoid abnormal noise. This half-wavelength section utilizes a mid-step descending structure 32, with a step ratio of 2:1 between the front and rear sections of the half-wavelength, ensuring an effective increase in amplitude.

[0081] When X = 10, the tenth central segment 11, to ensure effective amplitude growth, has its end designed to guarantee the mass of the tail end; this segment of the structure does not have amplitude variation design.

[0082] When X=11, to ensure stable energy output, the eleventh central rod segment 12 incorporates a half-wavelength stepped structure 33 and a second catenary-like structure 34 at its end. This allows the central rod to achieve high-amplitude energy output and stable output of high longitudinal waves and low transverse waves, thereby realizing the cutting and coagulation effects on soft tissue.

[0083] This invention constructs a model with a specific emission response, ensuring that the longitudinal wave energy of the central rod is significantly greater than that of the transverse wave. This not only greatly reduces the impact of the transverse wave on the cutting action of the central rod but also effectively improves the hemostasis effect of the central rod and enhances the uniformity of horizontal energy. Furthermore, the integrated design concept of multiple sub-models effectively controls the effective working surface of the central rod, thereby improving the stability of the ultrasonic scalpel.

[0084] This structure, applied to single-port surgery, employs a medium-length composite central strut. Due to variations in strut length, different performance indicators require different reductions. This design achieves an 8-12 dB reduction in energy between the front and rear beams of the central strut, significantly lowering the central static impedance and enabling instantaneous tissue dehydration and coagulation.

[0085] This achieves an approximately uniform distribution of energy and stress in the finished product's center rod, thereby improving the uniformity of longitudinal and transverse wave transmission and achieving stable cutting and hemostasis.

[0086] The design allows for flexible adjustment of the center rod based on two windows, addressing differences between batches of the same material, thus enhancing production efficiency.

[0087] The algorithm design of the central rod amplitude, frequency and stress was realized, which greatly reduced the external interference problem in practical applications, significantly reduced the processing defect rate and improved the production yield.

[0088] The specific embodiments described herein are merely illustrative examples of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention.

[0089] Although this article extensively uses the following structures: 1. Scalpel body; 2. First central segment; 3. Second central segment; 4. Third central segment; 5. Fourth central segment; 6. Fifth central segment; 7. Sixth central segment; 8. Seventh central segment; 9. Eighth central segment; 10. Ninth central segment; 11. Tenth central segment; 12. Eleventh central segment; 13. Stress-relieving amplification structure; 14. Longitudinal wave transmission structure; 15. Energy inheritance structure; 16. Anti-spillover structure; 17. Energy transition structure; 18. Amplitude transmission structure; 19. Front transition structure; 20. Anti-noise structure The terminology used includes: 0. Energy output structure; 21. Conical shape; 22. First catenary shape; 23. Exponential structure; 24. First step descending structure; 25. First long step ascending structure; 26. First Gaussian parabolic structure; 27. Front and rear double parabolic shape; 28. Second Gaussian parabolic structure; 29. ​​Second step descending structure; 30. Long step descending structure; 31. Second long step ascending structure; 32. Medium step descending structure; 33. Half-wavelength step structure; 34. Second catenary shape, etc. However, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention, and interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A medium-length composite structure ultrasonic scalpel central rod, comprising a scalpel body (1), characterized in that, The scalpel body (1) is provided with a first central rod segment (2), a second central rod segment (3), a third central rod segment (4), a fourth central rod segment (5), a fifth central rod segment (6), a sixth central rod segment (7), a seventh central rod segment (8), an eighth central rod segment (9), a ninth central rod segment (10), a tenth central rod segment (11), and an eleventh central rod segment (12). The eleventh central rod segment (12) is connected to the scalpel body (1). The first central rod segment (2) is provided with a stress-reducing amplification structure (13), and the second central rod segment (3) is provided with a longitudinal wave transmission structure (14). The third central pole segment (4) is provided with an energy inheritance structure (15), the fourth central pole segment (5) is provided with an anti-overflow structure (16), the fifth central pole segment (6) is provided with an energy transition structure (17), the sixth central pole segment (7) is provided with an amplitude transmission structure (18), the seventh central pole segment (8) is provided with a front transition structure (19), the eighth central pole segment (9) is provided with an end transition area, the ninth central pole segment (10) is provided with an anti-noise structure (20), and the eleventh central pole segment (12) is provided with an energy output structure (21).

2. The central rod of a medium-length composite ultrasonic surgical scalpel according to claim 1, characterized in that, The stress-relieving amplification structure (13) includes a conical body (22), a first catenary body (23), and an exponential structure body (233) disposed on the first central rod segment (2). The first catenary body (23) is located between the conical body (22) and the exponential structure body (233). The first central rod segment (2) is also provided with a first stepped descending structure (24).

3. The central rod of a medium-length composite ultrasonic surgical scalpel according to claim 2, characterized in that, The longitudinal wave transmission structure (14) includes a first long stepped ascending structure (25) disposed on the second central pole segment (3).

4. The central rod of a medium-length composite ultrasonic surgical scalpel according to claim 3, characterized in that, The energy inheritance structure (15) includes a first Gaussian parabolic structure (26) disposed on the third central pole segment (4).

5. The central rod of a medium-length composite ultrasonic surgical scalpel according to claim 4, characterized in that, The spillover prevention structure (16) includes a front and rear double parabolic body (27) and a second Gaussian parabolic structure (28) set on the fourth central rod segment (5).

6. The central rod of a medium-length composite ultrasonic surgical scalpel according to claim 5, characterized in that, The energy transition structure (17) includes a second step descending structure (29) disposed on the fifth central pole segment (6).

7. The central rod of a medium-length composite ultrasonic scalpel according to claim 6, characterized in that, The amplitude transmission structure (18) includes a long stepped descending structure (30) set on the sixth central rod segment (7).

8. The central rod of a medium-length composite ultrasonic scalpel according to claim 7, characterized in that, The aforementioned front transition structure (19) includes a second long step ascending structure (31) disposed on the seventh central pole segment (8).

9. The central rod of a medium-length composite ultrasonic surgical scalpel according to claim 8, characterized in that, The noise prevention structure (20) includes a middle step descending structure (32) installed on the ninth central pole segment (10).

10. The central rod of a medium-length composite ultrasonic scalpel according to claim 9, characterized in that, The energy output structure (21) includes a half-wavelength stepped structure (33) and a second catenary (34) disposed on the eleventh central rod segment (12).

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