Ultrasonic scalpel with bendable tail end based on rope drive

Abstract

The invention discloses a tail-end-bendable ultrasonic scalpel based on rope drive, and relates to the technical field of medical instruments, the tail-end-bendable ultrasonic scalpel comprises a scalpel head assembly, a transducer, a handle shell, a circuit board and a battery, and the front end of the transducer is in threaded connection with the scalpel head assembly. The snakelike joint structure based on the rope driving principle is adopted, a traditional ultrasonic energy transmission mode is innovated and improved, multi-angle and multi-direction flexible bending of the tail end of the tool bit is achieved, accurate movement of the tail end joint in multiple dimensions can be controlled by adjusting the tension of the steel wire rope at the position of the handle, and the tool bit can be flexibly bent in multiple directions. The scalpel can go deep into a complex anatomical area inside a human body, including a narrow or bent part which a traditional linear ultrasonic scalpel cannot reach, the snakelike joint structure enables the scalpel head to have good flexibility and controllability, a doctor can flexibly adjust the direction of the scalpel head according to the requirement in an operation, and therefore the scalpel head can be flexibly adjusted on the premise that the operation path is not changed. And multi-angle treatment of focus tissues is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, in particular to a rope-driven ultrasonic scalpel with a bendable end. Background Art

[0002] Ultrasonic scalpels can be used in abdominal, thyroid and other surgeries to cut and close biological tissues. Most existing ultrasonic scalpels are designed with straight rods, which only have two degrees of freedom: closing the end of the blade and rotating along the axis. During abdominal surgery, it is difficult to reach deep abdominal organs for operation. For areas with limited operating space, such as the abdominal cavity and thyroid, traditional ultrasonic scalpels cannot bend and cannot fully cover the surgical area, making some lesions difficult to treat and increasing the difficulty and risk of surgery.

[0003] The defects of existing ultrasonic surgical knives are: 1. Patent document US20020138090A1 discloses an ultrasonic surgical knife. However, the ultrasonic surgical knife in the above document can only move linearly and rotate along the axis, resulting in a small degree of freedom and inflexible use. 2. Patent document US09848900B2 discloses an ultrasonic surgical blade. However, the ultrasonic surgical blade in the above document has technical problems such as low energy transmission efficiency and cannot be used for a long time. 3. Patent document US20070055228A1 discloses an ultrasonic surgical knife device. However, the ultrasonic surgical knife in the above document is bulky and difficult to operate flexibly. 4. Patent document CN102813543A discloses an ultrasonic scalpel. However, the ultrasonic scalpel in the above document has the technical problem of low cutting efficiency and inability to quickly and accurately separate tissues. Summary of the Invention

[0004] The object of the present invention is to provide a rope-driven ultrasonic scalpel with a bendable end, so as to solve the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a rope-driven ultrasonic scalpel with a flexible end, comprising a blade assembly, a transducer, a handle housing, a circuit board, and a battery, wherein the front end of the transducer is threadedly connected to the blade assembly, the rear end of the transducer is mounted within the handle housing, the circuit board and the battery are fixed within the handle housing, the battery and the circuit board are electrically connected, and a coaxial sleeve on the transducer is provided with a positive conductive ring and a negative conductive ring, and the positive conductive ring and the negative conductive ring are respectively in elastic electrical contact with the circuit board; The blade assembly includes a serpentine joint structure and a bionic blade. The serpentine joint structure is connected to the bending adjustment paddle on the handle shell through two sets of steel cables, and the blade end can be bent at multiple angles by adjusting the tension of the two sets of steel cables. The circuit board is integrated with a microchip module for controlling the output intensity and frequency of ultrasonic energy; The battery is configured as a replaceable high energy density power module; The bionic blade adopts an uncoated bionic tooth shape design to simulate the mechanical properties of biological tissue; An angle adjustment knob is provided at one end of the handle housing, and the inner wall of the angle adjustment knob is fixedly connected to the outer wall of the cutter head assembly for adjusting the axial rotation of the cutter head assembly.

[0006] Preferably, the serpentine joint structure is composed of a plurality of titanium alloy hinge units, and the bending angle range is 0° to 180°.

[0007] Preferably, the microchip module integrates the host core computing and control circuits, reduces signal transmission loss by optimizing the circuit layout, and works in conjunction with the transducer to adjust the energy output mode in real time to adapt to the closure requirements of blood vessels of different diameters.

[0008] Preferably, the battery is fixed with a lightweight and high-strength engineering plastic battery compartment, and the battery compartment is arranged inside the handle.

[0009] Preferably, the bionic blade is provided with a clamping arm via a hinge, and the clamping arm also adopts an uncoated bionic tooth-shaped design, and the bionic tooth-shaped structure of the bionic blade and the clamping arm includes a multi-stage tapered blade.

[0010] Preferably, a superelastic titanium alloy amplitude transformer is provided between the transducer and the cutter head assembly, and the titanium alloy amplitude transformer maintains a longitudinal vibration energy transmission efficiency of ≥95% in a bent state through an improved energy coupling and transmission structure.

[0011] Preferably, a power adjustment button is provided on the outer wall of the handle housing for real-time switching between low-power coagulation mode and high-power cutting mode, and is suitable for closing operations of blood vessels with a diameter of 7 mm and below.

[0012] Preferably, a circuit structure is provided on the circuit board, and the circuit structure includes a boost circuit, a transducer power supply circuit, an MCU control processing circuit, a voltage stabilizing circuit, a control case cable and a power supply circuit.

[0013] Preferably, the working steps of the rope-driven end-bendable ultrasonic surgical knife are as follows: S1. Install a high-energy-density battery into the battery compartment of the handle housing, and form a stable circuit connection with the positive and negative conductive rings through the elastic electrical contact structure to power the transducer and circuit board. S2. The cutter head assembly is rotated by the angle adjustment knob at the end of the handle housing. The fixed connection structure between the inner wall of the knob and the outer wall of the cutter head allows for 360° precise axial positioning of the cutter head assembly. The bending adjustment paddle is operated to control the bending shape of the serpentine joint structure through the differential tension of the two sets of steel cables. The mechanical transmission characteristics of the rope drive system are utilized to form a preset multi-degree-of-freedom bending configuration at the end of the cutter head. S3. The ultrasonic output parameters, including frequency and power density, are set through a microchip module on the circuit board to match the biomechanical properties of the target tissue. The battery-powered transducer converts electrical energy into mechanical vibrations, which are coaxially transmitted to the bionic blade. The uncoated bionic tooth-shaped structure amplifies the amplitude through the resonance enhancement effect, forming a precise cutting energy field at the microscale. S4, Bionic Blade, utilizes ultrasonic cavitation and mechanical vibration to achieve heat-free cutting. The multi-stage tapered blade design distributes the cutting force gradient along the blade edge, reducing tissue damage and blade adhesion. The clamping arm works in conjunction with the bionic blade through a hinge mechanism. Its bionic tooth structure forms an interlocking clamp with the main blade, achieving an integrated "cutting-clamping" operation. A single feed can complete tissue separation and hemostasis. S5. Release the bending adjustment paddle to restore the serpentine joint structure to a straight state, rotate the angle adjustment knob to return the cutter head assembly to zero position, disconnect the electrical contact between the battery and the conductive ring, remove the battery for charging or replacement, and disassemble the cutter head assembly for high temperature and high pressure sterilization.

[0014] Preferably, the step S4 further includes the following steps: S41. During the operation, the bending angle of the blade is adjusted in real time through the bending adjustment paddle to adapt to changes in anatomical structure. The microchip module automatically adjusts the ultrasound parameters according to sensor feedback and automatically completes power compensation when changes in tissue density are detected.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention utilizes a serpentine joint structure based on a rope drive principle, combined with innovative improvements to traditional ultrasonic energy transmission methods, to achieve multi-angle and multi-directional flexible bending of the blade tip. By adjusting the tension of the wire rope in the handle, the precise movement of the distal joint in multiple dimensions can be controlled, enabling the scalpel to penetrate complex anatomical areas within the human body, including narrow or curved areas that are difficult to reach with traditional linear ultrasonic scalpels. The serpentine joint structure provides the blade tip with excellent flexibility and maneuverability, allowing the surgeon to flexibly adjust the blade tip direction according to intraoperative needs, thereby achieving multi-angle treatment of lesions without changing the surgical path. The improved energy coupling and transmission structure ensures that even when the distal joint is bent, ultrasonic energy in the longitudinal direction can still be efficiently and unattenuatedly transmitted to the blade tip tip, avoiding energy lag or loss caused by structural bending. 2. This invention integrates the core computing and control circuits of the host into a microchip module, which is connected to the wiring structure of the handle. This allows the host and transducer to work in an integrated and coordinated manner. Compared with traditional ultrasonic scalpels, this device is significantly smaller and free from the constraints of a bulky host and long cables, making the device lighter and more portable. This allows doctors to operate the device flexibly during surgery, improves the convenience of surgical operations, and optimizes the utilization of operating room space. 3. This invention utilizes an innovative power module with high energy density and light weight. This module, on the one hand, can provide the ultrasonic scalpel with more stable and long-lasting power, meeting the needs of complex surgeries of varying durations and avoiding interruptions due to insufficient power. It also reduces the overall weight of the device, alleviating the burden on surgeons during lengthy surgeries, improving operator comfort, and making the surgical process smoother. 4. This invention uses a bionic blade without additional coating through a bionic blade and clamping arm to simulate the mechanical properties of biological tissue, significantly improving cutting efficiency. It can separate tissue more quickly and accurately, shortening surgical time, reducing damage to surrounding tissues, preventing blade adhesion, reducing the risk of postoperative complications, avoiding the risk of coating shedding, ensuring surgical safety, and improving surgical precision and safety. 5. This invention achieves reliable closure of blood vessels with a diameter of 7 mm or less by optimizing the energy output mode and blade structure. Compared with traditional ultrasonic scalpels, it can effectively reduce intraoperative and postoperative bleeding, lower surgical risks, and improve surgical success rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the finishing structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 4 Schematic diagram of the serpentine joint structure of the present invention; Figure 5 Schematic diagram of the serpentine joint structure of the present invention; Figure 6 This is a schematic diagram of the circuit board structure process of the present invention; Figure 7 Schematic diagram of the workflow of the present invention.

[0017] In the figure: 1. Blade assembly; 2. Transducer; 3. Handle housing; 4. Circuit board; 5. Battery; 6. Positive conductive ring; 7. Negative conductive ring; 8. Serpentine joint structure; 9. Bionic blade; 10. Bending adjustment paddle; 11. Microchip module; 12. Angle adjustment knob; 13. Clamping arm; 14. Titanium alloy amplitude rod; 15. Power adjustment button. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0021] Example 1: Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6The present invention provides an embodiment of a rope-driven, end-flexible ultrasonic surgical scalpel, comprising a blade assembly 1, a transducer 2, a handle housing 3, a circuit board 4, and a battery 5. The front end of the transducer 2 is threadedly connected to the blade assembly 1, and the rear end of the transducer 2 is installed in the handle housing 3. The circuit board 4 and the battery 5 are fixed inside the handle housing 3. The battery 5 is electrically connected to the circuit board 4. A positive conductive ring 6 and a negative conductive ring 7 are coaxially sleeved on the transducer 2, and the positive conductive ring 6 and the negative conductive ring 7 are respectively in elastic electrical contact with the circuit board 4. The blade assembly 1 includes a serpentine joint structure 8 and a bionic blade 9. The serpentine joint structure 8 is connected to a bending adjustment paddle 10 on the handle housing 3 via two sets of steel cables. The blade end can be bent at multiple angles by adjusting the tension of the two sets of steel cables. The circuit board 4 integrates a microchip module 11 for controlling the output intensity and frequency of ultrasonic energy; The battery 5 is configured as a replaceable high energy density power module; The bionic blade 9 adopts an uncoated bionic tooth design to simulate the mechanical properties of biological tissue; An angle adjustment knob 12 is provided at one end of the handle housing 3, and the inner wall of the angle adjustment knob 12 is fixedly connected to the outer wall of the cutter head assembly 1 for adjusting the axial rotation of the cutter head assembly 1; The serpentine joint structure 8 is composed of a plurality of titanium alloy hinge units, and its bending angle range is 0° to 180°; Furthermore, by adopting a serpentine joint structure 8 based on the rope drive principle, combined with innovative improvements to traditional ultrasonic energy transmission methods, multi-angle and multi-directional flexible bending of the blade tip is achieved. By adjusting the tension of the wire rope in the handle, the precise movement of the end joint in multiple dimensions can be controlled, allowing the scalpel to penetrate into complex anatomical areas inside the human body, including narrow or curved areas that are difficult to reach with traditional linear ultrasonic knives. The serpentine joint structure 8 gives the blade good flexibility and controllability. The doctor can flexibly adjust the direction of the blade according to intraoperative needs, thereby achieving multi-angle treatment of the diseased tissue without changing the surgical path. The improved energy coupling and transmission structure is used to ensure that when the end joint is bent, the ultrasonic energy in the longitudinal direction can still be efficiently and non-attenuated transmitted to the blade tip, avoiding energy lag or loss caused by structural bending.

[0022] Example 2: Please refer to Figure 3 and Figure 6 In one embodiment of the present invention, a microchip module 11 integrates the core computing and control circuits of the host, reduces signal transmission loss by optimizing the circuit layout, and works in conjunction with the transducer 2 to adjust the energy output mode in real time to meet the sealing requirements of blood vessels of different diameters. The circuit board 4 is provided with a circuit structure, which includes a boost circuit, a power supply circuit for the transducer 2, an MCU control processing circuit, a voltage stabilization circuit, a control case cable and a power supply circuit; Furthermore, by highly integrating the host core computing and control circuits into the microchip module 11 and connecting it to the circuit structure of the handle, the host and transducer 2 can work together in an integrated manner. Compared with traditional ultrasonic scalpels, the size of the device is greatly reduced, and the constraints of bulky host and extra-long cables are eliminated, making the device lighter and more portable, which is convenient for doctors to operate flexibly during surgery, improves the convenience of surgical operations, and optimizes the utilization rate of operating room space.

[0023] Example 3: Please refer to Figure 3 , an embodiment provided by the present invention: the battery 5 is fixed by a lightweight and high-strength engineering plastic battery compartment, and the battery compartment is arranged inside the handle; Furthermore, by adopting an innovative power module with high energy density and light weight, on the one hand, it can provide the ultrasonic scalpel with more lasting and stable power to meet the needs of complex surgeries at different times and avoid interruptions of surgery due to insufficient power. On the other hand, it can reduce the overall weight of the equipment, reduce the operational burden of doctors during long-term operations, improve operational comfort, and make the surgical process smoother.

[0024] Example 4: Please refer to Figure 1 and Figure 3 The present invention provides an embodiment in which a bionic blade 9 is provided with a clamping arm 13 via a hinge, and the clamping arm 13 also adopts an uncoated bionic tooth shape design, and the bionic tooth shape structure of the bionic blade 9 and the clamping arm 13 includes a multi-stage tapered blade; Furthermore, by using a bionic blade 9 without additional coating through the bionic blade 9 and the clamping arm 13, the mechanical properties of biological tissue are simulated, and the cutting efficiency is greatly improved. It can separate tissue more quickly and accurately, shorten the operation time, reduce damage to surrounding tissues and prevent blade adhesion, reduce the risk of postoperative complications, avoid the hidden danger of coating falling off, ensure surgical safety, and improve surgical accuracy and safety.

[0025] Example 5: Please refer to Figure 3 In one embodiment of the present invention, a superelastic titanium alloy horn 14 is provided between the transducer 2 and the cutter head assembly 1, and the titanium alloy horn 14 maintains a longitudinal vibration energy transmission efficiency of ≥95% in a bent state through an improved energy coupling and transmission structure; The outer wall of the handle housing 3 is provided with a power adjustment button 15, which is used to switch between low-power coagulation mode and high-power cutting mode in real time, and is suitable for sealing operations of blood vessels with a diameter of 7 mm and below; Furthermore, by optimizing the energy output mode and blade structure, reliable closure of blood vessels with a diameter of 7 mm or less can be achieved. Compared with traditional ultrasonic scalpels, it can effectively reduce intraoperative and postoperative bleeding, lower surgical risks, and improve surgical success rates.

[0026] Example 6: An embodiment provided by the present invention: When clamping, the blood vessel must first be fully coagulated using low-power mode to denature and close the collagen in the blood vessel wall. Subsequently, the cutting is switched to high power at the same position or an adjacent position. This step-by-step operation can achieve both hemostasis and cutting efficiency. Direct use of high power will result in excessively fast cutting speeds and incomplete hemostasis, increasing the risk of postoperative bleeding. Clinical case: Bladder cancer surgery using an ultrasonic scalpel capable of clamping blood vessels with a diameter of 7mm or less and low-to-high power real-time conversion reduced the patient's postoperative recovery time by 50%, with no secondary bleeding or infection. A traditional ultrasonic scalpel procedure would take 2 hours, but using this device, capable of clamping blood vessels with a diameter of 7mm or less and low-to-high power real-time conversion, the procedure only takes 30 minutes. Intraoperative blood loss can be controlled within 20 ml, significantly reducing patient risks. Liver resection uses an ultrasonic scalpel that can clamp blood vessels with a diameter of 7mm or less and has low-to-high power real-time conversion. The success rate of coagulation of intrahepatic blood vessels can reach more than 95%, and the postoperative complication rate is less than 2%.

[0027] Colorectal surgery uses an ultrasonic scalpel that can clamp blood vessels with a diameter of 7mm or less and has real-time low-to-high power conversion, which can convert power to perform superior rectal artery treatment; Radical prostatectomy uses an ultrasonic scalpel that can clamp blood vessels with a diameter of 7mm or less and has real-time low-to-high power conversion. During the operation, low power is used to separate the blood vessels and high power is used to clamp them.

[0028] Example 7: Please refer to Figure 7 The present invention provides an embodiment of the present invention: the working steps of the rope-driven end-bendable ultrasonic surgical knife are as follows: S1. Install the high-energy-density battery 5 into the battery compartment of the handle housing 3, and form a stable circuit connection with the positive conductive ring 6 and the negative conductive ring 7 through the elastic electrical contact structure to supply power to the transducer 2 and the circuit board 4; S2. Rotate the cutter head assembly 1 by means of the angle adjustment knob 12 at the end of the handle housing 3. Utilize the fixed connection structure between the inner wall of the knob and the outer wall of the cutter head to achieve 360° precise axial positioning of the cutter head assembly 1. Operate the bending adjustment paddle 10. The bending shape of the serpentine joint structure 8 is controlled by the differential tension of the two sets of steel cables. Utilize the mechanical transmission characteristics of the rope drive system to form a preset multi-degree-of-freedom bending configuration at the end of the cutter head. S3. The microchip module 11 on the circuit board 4 sets the ultrasonic output parameters, including frequency and power density, to match the biomechanical properties of the target tissue. The battery 5 powers the transducer 2, which converts electrical energy into mechanical vibrations. The vibrations are coaxially transmitted to the bionic blade 9. Its uncoated bionic tooth-shaped structure amplifies the amplitude through the resonance enhancement effect, forming a precise cutting energy field at a microscopic scale. S4, bionic blade 9, uses ultrasonic cavitation and mechanical vibration to achieve heat-free cutting. The multi-stage tapered blade design distributes the cutting force gradiently along the blade edge, reducing tissue damage and blade adhesion. The clamping arm 13 cooperates with the bionic blade 9 through a hinge mechanism. Its bionic tooth structure forms an interlocking clamp with the main blade, realizing an integrated "cutting-clamping" operation. A single feed can complete tissue separation and hemostasis. S5. Release the bending adjustment paddle 10 to restore the serpentine joint structure 8 to a straight state, rotate the angle adjustment knob 12 to return the cutter head assembly 1 to zero, disconnect the electrical contact between the battery 5 and the conductive ring, remove the battery 5 for charging or replacement, and disassemble the cutter head assembly 1 for high temperature and high pressure sterilization; S4 also includes the following steps: S41. During the operation, the bending angle of the blade is adjusted in real time through the bending adjustment paddle 10 to adapt to the changes in the anatomical structure. The microchip module 11 automatically adjusts the ultrasound parameters according to the sensor feedback and automatically completes the power compensation when the tissue density change is detected.

[0029] Working principle: By adopting a serpentine joint structure 8 based on the rope drive principle and combining it with innovative improvements to the traditional ultrasonic energy transmission method, the end of the blade can be flexibly bent in multiple angles and directions. By adjusting the tension of the wire rope in the handle, the precise movement of the end joint in multiple dimensions can be controlled, so that the scalpel can penetrate into the complex anatomical areas inside the human body, including narrow or curved parts that are difficult to reach with traditional linear ultrasonic knives. The serpentine joint structure 8 gives the blade good flexibility and controllability. The doctor can flexibly adjust the direction of the blade according to the needs during the operation, thereby achieving multi-angle treatment of the lesion tissue without changing the surgical path. The improved energy coupling and transmission structure ensures that when the end joint is bent, the ultrasonic energy in the longitudinal direction can still be efficiently and attenuated. It can avoid energy lag or loss caused by structural bending. By highly integrating the core computing and control circuits of the host into the microchip module 11 and connecting it to the circuit structure of the handle, the host and transducer 2 can work together as a whole. Compared with traditional ultrasonic scalpels, the device size is greatly reduced and the bulky main unit is eliminated. The device is free from the constraints of the machine and extra-long cables, making it lighter and more portable, which is convenient for doctors to operate flexibly during surgery, improves the convenience of surgical operations, and optimizes the space utilization rate of the operating room. By adopting an innovative power supply module with high energy density and light weight, on the one hand, it can provide the ultrasonic scalpel with more lasting and stable power to meet the needs of complex operations at different times and avoid interruptions to the operation due to insufficient power. On the other hand, it reduces the overall weight of the equipment, reduces the operating burden of doctors during long operations, improves operating comfort, and makes the operation process smoother. The bionic blade 9 and the clamping arm 13 use a bionic blade 9 without additional coating to simulate the mechanical properties of biological tissue, greatly improving the cutting efficiency, and can separate tissues more quickly and accurately, shortening the operation time, reducing damage to surrounding tissues and preventing blade adhesion, reducing the risk of postoperative complications, avoiding the hidden dangers of coating shedding, ensuring surgical safety, and improving surgical accuracy and safety. By optimizing the energy output mode and blade structure, reliable closure of blood vessels with a diameter of 7 mm or less can be achieved. Compared with traditional ultrasonic scalpels, it can effectively reduce intraoperative and postoperative bleeding, reduce surgical risks, and improve the success rate of surgery.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A cord-driven ultrasonic surgical scalpel with a flexible end, comprising a scalpel head assembly (1), a transducer (2), a handle housing (3), a circuit board (4) and a battery (5), characterized in that: The front end of the transducer (2) is threadedly connected to the cutter head assembly (1), the rear end of the transducer (2) is installed in the handle housing (3), the circuit board (4) and the battery (5) are fixed inside the handle housing (3), the battery (5) and the circuit board (4) are electrically connected, and the coaxial sleeve on the transducer (2) is provided with a positive conductive ring (6) and a negative conductive ring (7), and the positive conductive ring (6) and the negative conductive ring (7) are respectively in elastic electrical contact with the circuit board (4); The blade assembly (1) comprises a serpentine joint structure (8) and a bionic blade (9), wherein the serpentine joint structure (8) is connected to a bending adjustment paddle (10) on a handle housing (3) via two sets of steel cables, and the blade end can be bent at multiple angles by adjusting the tension of the two sets of steel cables; The circuit board (4) is integrated with a microchip module (11) for controlling the output intensity and frequency of ultrasonic energy; The battery (5) is configured as a replaceable high energy density power module; The bionic blade (9) adopts a bionic tooth-shaped design without coating to simulate the mechanical properties of biological tissue; An angle adjustment knob (12) is provided at one end of the handle housing (3), and the inner wall of the angle adjustment knob (12) is fixedly connected to the outer wall of the cutter head assembly (1) for adjusting the axial rotation of the cutter head assembly (1).

2. The rope-driven ultrasonic surgical scalpel with a flexible end according to claim 1, characterized in that: The serpentine joint structure (8) is composed of a plurality of titanium alloy hinge units, and its bending angle range is 0° to 180°.

3. The rope-driven ultrasonic surgical scalpel with a flexible end according to claim 1, characterized in that: The microchip module (11) integrates the host core operation and control circuits, reduces signal transmission loss by optimizing the circuit layout, and works in conjunction with the transducer (2) to adjust the energy output mode in real time to adapt to the closure requirements of blood vessels of different diameters.

4. The rope-driven ultrasonic surgical scalpel with a flexible end according to claim 1, characterized in that: The battery (5) is fixed with a lightweight and high-strength engineering plastic battery compartment, and the battery compartment is arranged inside the handle.

5. The rope-driven ultrasonic surgical scalpel with a flexible end according to claim 1, characterized in that: The bionic blade (9) is provided with a clamping arm (13) via a hinge, and the clamping arm (13) also adopts a bionic tooth profile design without coating. The bionic tooth profile structure of the bionic blade (9) and the clamping arm (13) includes a multi-stage tapered blade.

6. The rope-driven ultrasonic surgical scalpel with a flexible end according to claim 1, characterized in that: A superelastic titanium alloy amplitude transformer (14) is provided between the transducer (2) and the cutter head assembly (1), and the titanium alloy amplitude transformer (14) maintains a longitudinal vibration energy transmission efficiency of ≥95% in a bent state through an improved energy coupling and transmission structure.

7. The rope-driven ultrasonic surgical scalpel with a flexible end according to claim 1, characterized in that: The outer wall of the handle housing (3) is provided with a power adjustment button (15) for real-time switching between a low-power coagulation mode and a high-power cutting mode, and is suitable for closing blood vessels with a diameter of 7 mm or less.

8. The rope-driven ultrasonic surgical scalpel with a flexible end according to claim 1, characterized in that: The circuit board (4) is provided with a circuit structure, which includes a boost circuit, a transducer (2) power supply circuit, an MCU control processing circuit, a voltage stabilization circuit, a control case cable, and a power supply circuit.

9. The method for using a rope-driven ultrasonic surgical knife with a flexible end according to claim 5, characterized in that: The working steps of the rope-driven, end-bendable ultrasonic scalpel are as follows: S1. Installing a high-energy-density battery (5) into the battery compartment of the handle housing (3), forming a stable circuit connection with the positive conductive ring (6) and the negative conductive ring (7) through the elastic electrical contact structure, and supplying power to the transducer (2) and the circuit board (4); S2, rotating the cutter head assembly (1) by means of the angle adjustment knob (12) at the end of the handle housing (3), achieving 360° axial precision positioning of the cutter head assembly (1) by means of the fixed connection structure between the inner wall of the knob and the outer wall of the cutter head, operating the bending adjustment paddle (10), controlling the bending shape of the serpentine joint structure (8) by means of the differential tension of the two sets of steel wire ropes, and utilizing the mechanical transmission characteristics of the rope drive system to form a preset multi-degree-of-freedom bending configuration at the end of the cutter head; S3, setting the ultrasonic output parameters, including frequency and power density, through the microchip module (11) on the circuit board (4) to match the biomechanical properties of the target tissue, the battery (5) powers the drive transducer (2) to convert electrical energy into mechanical vibration, and the vibration is coaxially transmitted to the bionic blade (9), whose uncoated bionic tooth-shaped structure amplifies the amplitude through the resonance enhancement effect, forming a micro-scale precision cutting energy field; S4, bionic blade (9), uses ultrasonic cavitation effect and mechanical vibration to achieve heat-free cutting. The multi-stage tapered blade design makes the cutting force distributed along the blade edge gradient, reducing tissue damage and blade adhesion. The clamping arm (13) cooperates with the bionic blade (9) through a hinge mechanism. Its bionic tooth structure forms an occlusal clamp with the main blade, realizing the "cutting-clamping" integrated operation. A single feed can complete tissue separation and hemostasis. S5. Release the bending adjustment paddle (10) to restore the serpentine joint structure (8) to a straight state, rotate the angle adjustment knob (12) to return the cutter head assembly (1) to zero, disconnect the electrical contact between the battery (5) and the conductive ring, remove the battery (5) for charging or replacement, and disassemble the cutter head assembly (1) for high temperature and high pressure sterilization.

10. The method for using a rope-driven ultrasonic surgical knife with a flexible end according to claim 9, characterized in that: The step S4 also includes the following steps: S41. During the operation, the bending angle of the blade is adjusted in real time through the bending adjustment paddle (10) to adapt to the changes in the anatomical structure. The microchip module (11) automatically adjusts the ultrasound parameters according to the sensor feedback and automatically completes the power compensation when the tissue density change is detected.

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