Surgical knife under laparoscope

Abstract

The invention relates to the technical field of laparoscopic surgery, and discloses a laparoscopic surgery cutter which comprises a handle, a rotary knob is rotatably connected to the outside of the handle, a cutter cylinder is fixedly connected to the inside of the rotary knob, a cutter padding assembly is arranged in the handle, an ultrasonic assembly is arranged in the handle, and the ultrasonic assembly is fixedly connected to the inside of the rotary knob. The ultrasonic assembly is connected with a telescopic assembly, the telescopic assembly is connected with a cutter assembly, the outer portion of the cutter cylinder is movably connected with an attaching piece, and the inner portion of the attaching piece is movably connected with a laparoscope. The knife padding assembly comprises a holding rod, and the holding rod is movably connected to the interior of the handle. The sleeve is driven by the electric sliding rail to slide in the inner cylinder, the cutter body of the cutter assembly is driven to stretch out and draw back, accurate control over the cutting action is guaranteed, and therefore the requirements for the cutting length and depth in various operation scenes can be met, and it is guaranteed that the cutter body can be safely retracted into the cutter cylinder after cutting is completed.

Description

Technical Field

[0001] The invention relates to the technical field of laparoscopic surgery, in particular to a laparoscopic surgical tool. Background Art

[0002] Laparoscopic surgery is currently an advanced minimally invasive surgical method. Due to its small trauma and quick recovery, it is increasingly used in various types of internal medicine surgeries.

[0003] However, traditional laparoscopic knives often have problems such as low cutting accuracy, inflexible operation, and unsatisfactory cutting and coagulation effects, which directly affect the effect and safety of the operation. Traditional laparoscopic surgical knives generally use mechanical cutting or electrosurgical cutting technology, but the operation and adjustment of these knives usually require more external equipment support, and the demand for fine cutting and coagulation during surgery is high, especially in the environment of laparoscopic surgery where the local operating space is small and flexible control is required. It is difficult for existing technologies to meet multiple surgical needs at the same time. The operation of traditional laparoscopic knives is relatively complicated, and doctors are usually required to frequently adjust the working state and cutting depth of the tools during the operation, which not only increases the difficulty of operation, but may also cause the operation to be interrupted or damage the surrounding tissues due to improper adjustment. In addition, some surgical knives are completely disposable. Although the risk of cross infection can be reduced, this also brings a large amount of medical waste and resource waste, and increases the operating costs of hospitals. For this reason, technicians in this field propose a laparoscopic surgical knife to solve the above problems. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a laparoscopic surgical knife, which solves the problems that the prior art is difficult to simultaneously meet multiple surgical requirements, the operation is relatively complicated, and the surgical knife is completely disposable.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a laparoscopic surgical tool, comprising a handle, the outside of the handle is rotatably connected to a knob, the inside of the knob is fixedly connected to a knife barrel, the inside of the handle is provided with a knife pad assembly, the inside of the handle is provided with an ultrasonic assembly, the ultrasonic assembly is connected to a telescopic assembly, the telescopic assembly is connected to a cutting knife assembly, the outside of the knife barrel is movably connected to a fitting, and the inside of the fitting is movably connected to a laparoscope;

[0006] The washer knife assembly includes a grip rod, which is movably connected to the inside of the handle, a connecting block is fixedly connected to the outside of the grip rod, a swing block is rotatably connected to the top of the connecting block, a spring is provided inside the handle, a connecting block is sleeved on the outside of the swing block, an inner cylinder is fixedly connected to the left side of the connecting block, a connecting rod is rotatably connected to the outside of the inner cylinder, and a washer knife body is fixedly connected to the outside of the connecting rod.

[0007] Preferably, the ultrasonic component includes a first control button which is installed inside the handle. A second control button is installed inside the handle. An ultrasonic generator is installed on the upper side inside the handle. A converter is installed on the left side of the ultrasonic generator. A vibrating rod is arranged inside the converter.

[0008] Preferably, the telescopic component includes a third control button which is installed outside the handle. An electric slide rail is installed on the inner wall of the inner cylinder. A moving seat is installed outside the electric slide rail. A sleeve is fixedly connected to the top end of the moving seat. An adapter rod is fixedly connected to the left end of the sleeve.

[0009] Preferably, the cutter component includes a mounting block which is slidably connected inside the inner cylinder. A cutter body is fixedly connected to the left side of the mounting block. Internal threads are arranged inside the mounting block. External threads are arranged on the left outer side of the adapter rod.

[0010] Preferably, the inside of the handle is rotatably connected to the outside of the connecting block. The spring is sleeved on the right side of the swinging block. The inside of the cutter barrel is slidably connected to the outside of the inner cylinder. The inner side of the connecting rod is rotatably connected to the outside of the cutter barrel.

[0011] Preferably, the output end of the ultrasonic generator is connected to the right side of the converter. The vibrating rod is arranged inside the inner cylinder.

[0012] Preferably, the outside of the sleeve is slidably connected to the inside of the inner cylinder. The inside of the sleeve is slidably connected to the outside of the vibrating rod.

[0013] Preferably, the mounting block is connected to the external threads on the adapter rod through the internal threads inside it. The outside of the cutter body is slidably connected to the inside of the inner cylinder.

[0014] Preferably, the first control button, the second control button and the third control button can transmit instructions to the central control system.

[0015] Preferably, the central control system includes:

[0016] Control module: Sends control instructions to the system through the first control button, the second control button and the third control button;

[0017] Analysis module: Analyzes and processes the input data through the data processing unit to provide a decision-making basis for the operation of the system;

[0018] Drive module: Performs corresponding actions on the ultrasonic generator and the electric slide rail according to the instructions of the control module and the processing results of the analysis module.

[0019] The present invention provides a surgical tool for laparoscopic surgery. It has the following beneficial effects:

[0020] 1. In the present invention, an electric slide rail drives a sleeve to slide within an inner cylinder, driving the telescopic movement of the cutter body of the cutter assembly, ensuring precise control of the cutting action. Thus, it can not only meet the requirements for cutting length and depth in various surgical scenarios, but also ensure that after cutting is completed, the cutter body can be safely retracted into the cutter cylinder, avoiding harm to doctors or causing infections, ensuring the hygiene of the operating environment, and reducing the risk of postoperative infections.

[0021] 2. In the present invention, the cutter body of the tool is for single - use and can be easily disassembled and replaced through threaded connection. The connection design between the cutter body and the connecting rod makes the replacement process simple and fast, effectively improving the maintenance efficiency of the tool. In addition, other components of the tool (such as the handle, inner cylinder, etc.) can be reused after disinfection, which not only reduces the surgical cost but also reduces resource waste, meeting the principles of environmental protection and economy.

[0022] 3. The present invention combines ultrasonic technology and precise mechanical cutting functions. The high - frequency ultrasonic signal generated by the ultrasonic generator is converted into mechanical vibration through a converter, which can effectively coagulate local tissues while driving the cutting edge part for fine cutting, greatly reducing the intraoperative blood loss, improving the safety and efficiency of the surgery. Especially in minimally invasive laparoscopic surgery, it can reduce the damage to surrounding tissues.

[0023] 4. In the present invention, multiple control buttons on the handle (such as control button one, control button two, control button three) can precisely adjust the working state of the ultrasonic generator and control the telescopic movement of the cutter assembly, thereby achieving precise control of the tool functions. The knob helps the doctor adjust the angle of the cutter cylinder to meet the surgical requirements of different parts, enabling the tool to flexibly adapt to different surgical environments and operation methods, greatly improving the flexibility of the surgery, reducing the operation difficulty of doctors, and reducing the intraoperative time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of the present invention;

[0025] Figure 2 is a schematic structural view of the handle of the present invention;

[0026] Figure 3 is Figure 2 an enlarged view of part A in

[0027] Figure 4 is a schematic structural view of the grip rod of the present invention;

[0028] Figure 5 is a schematic structural view of the connection block of the present invention;

[0029] Figure 6 It is Figure 5 the enlarged view of part B in

[0030] Figure 7 the schematic diagram of the sleeve structure of the present invention;

[0031] Figure 8 the schematic diagram of the mounting block structure of the present invention;

[0032] Figure 9 the flowchart of the central control system of the present invention.

[0033] Among them, 1. handle; 2. knob; 3. cutter barrel; 4. tool rest assembly; 401. grip bar; 402. connecting block; 403. swing block; 404. spring; 405. connecting block; 406. inner cylinder; 407. connecting rod; 408. tool rest body; 5. ultrasonic assembly; 501. control button 1; 502. control button 2; 503. ultrasonic generator; 504. converter; 505. vibrating rod; 6. telescopic assembly; 601. control button 3; 602. electric slide rail; 603. moving seat; 604. sleeve; 605. connecting rod; 7. cutting tool assembly; 701. mounting block; 702. cutting tool body; 703. internal thread; 704. external thread; 8. fitting; 9. laparoscope. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to the attached Figure 1 - attached Figure 4, embodiments of the present invention provide a surgical tool under laparoscope, which includes a handle 1. A knob 2 is rotatably connected to the outside of the handle 1. A cutter barrel 3 is fixedly connected to the inside of the knob 2. A cutter padding assembly 4 is arranged inside the handle 1. The cutter padding assembly 4 includes a grip rod 401. The grip rod 401 is movably connected inside the handle 1. A connecting block 402 is fixedly connected to the outside of the grip rod 401. The inside of the handle 1 is rotatably connected to the outside of the connecting block 402. A swinging block 403 is rotatably connected to the top of the connecting block 402. A spring 404 is arranged inside the handle 1. The spring 404 is sleeved on the right side of the swinging block 403. An adapter block 405 is sleeved on the outside of the swinging block 403. A left side of the adapter block 405 is fixedly connected to an inner cylinder 406. The inside of the cutter barrel 3 is slidably connected to the outside of the inner cylinder 406. A left side of the outside of the inner cylinder 406 is rotatably connected to a connecting rod 407. An inner side of the connecting rod 407 is rotatably connected to the outside of the cutter barrel 3. A cutter padding body 408 is fixedly connected to the outside of the connecting rod 407.

[0036] Specifically, the handle 1 is the operation main body of the whole surgical tool. It is designed in an ergonomic shape, enabling the surgeon to maintain a comfortable operation posture during long surgeries. And a knob 2 is rotatably connected to its outside, and a cutter barrel 3 is fixedly connected to the inside of the knob 2; by rotating the knob 2, the angle of the cutter barrel 3 can be adjusted to meet different surgical requirements; the function of the cutter padding assembly 4 is to provide support and protection during the surgery; the grip rod 401 is movably connected inside the handle 1. By pushing the grip rod 401, the connecting block 402 is driven to move; the swinging block 403 at the top of the connecting block 402 rotates inside the handle 1, while compressing or stretching the spring 404. The spring 404 is sleeved on the right side of the swinging block 403, providing a restoring elastic force for the swinging block 403; the adapter block 405 outside the swinging block 403 moves accordingly, driving the inner cylinder 406 to slide inside the cutter barrel 3; the connecting rod 407 on the left side of the outside of the inner cylinder 406 will also rotate correspondingly, so that the cutter padding body 408 is unfolded or retracted, realizing the support and protection of the surgical site.

[0037] Please refer to the attached Figure 2 、the attached Figure 4 and Figure 5 , an ultrasonic component 5 is arranged inside the handle 1. The ultrasonic component 5 includes a control button one 501. The control button one 501 is installed inside the handle 1. A control button two 502 is installed inside the handle 1. An ultrasonic generator 503 is installed on the upper side inside the handle 1. A converter 504 is installed on the left side of the ultrasonic generator 503. The output end of the ultrasonic generator 503 is connected to the right side of the converter 504. A vibrating rod 505 is arranged inside the converter 504. The vibrating rod 505 is arranged inside the inner cylinder 406.

[0038] Specifically, the ultrasonic component 5 is used to generate ultrasonic energy to assist surgical operations, achieving fine cutting and coagulation of tissues through ultrasonic technology. The first control button 501 and the second control button 502 are installed inside the handle 1, and are respectively used to start and adjust the working state of the ultrasonic generator 503, including parameters such as vibration frequency and power. The design of the buttons takes into account the need for doctors to operate flexibly during surgery to ensure easy operation. The ultrasonic generator 503 generates high-frequency ultrasonic signals, and the converter 504 converts the electrical signals into mechanical vibrations to drive the vibrating rod 505 to vibrate at a high frequency. The vibrating rod 505 is located inside the inner cylinder 406 and can transmit the vibrations of the ultrasonic waves to the blade part, realizing the dual functions of precise cutting and coagulation during the surgery.

[0039] Please refer to the appendix Figure 6 and the appendix Figure 7 As shown, the ultrasonic component 5 is connected to a telescopic component 6. The telescopic component 6 includes a third control button 601. The third control button 601 is installed outside the handle 1. An electric slide rail 602 is installed on the inner wall of the inner cylinder 406. A moving seat 603 is installed outside the electric slide rail 602. The top of the moving seat 603 is fixedly connected to a sleeve 604. The outside of the sleeve 604 is slidably connected to the inside of the inner cylinder 406. The inside of the sleeve 604 is slidably connected to the outside of the vibrating rod 505. The left end of the sleeve 604 is fixedly connected to an adapter rod 605.

[0040] Specifically, the telescopic component 6 is used to control the extension and retraction of the cutter assembly. The third control button 601 is installed outside the handle 1, which is convenient for doctors to precisely control the extension and retraction of the cutter through direct external operation. The electric slide rail 602 is arranged on the inner wall of the inner cylinder 406. The moving seat 603 is fixed on the electric slide rail 602. Through electric drive, the moving seat 603 can slide back and forth along the electric slide rail 602 to adjust the extension and retraction of the cutter. The sleeve 604 is slidably connected to the inside of the inner cylinder 406. The sleeve 604 is driven to extend and retract by the electric slide rail 602. The inside of the sleeve 604 is connected to the vibrating rod 505. The adapter rod 605 is connected to the cutter assembly 7 to ensure that the blade can move precisely during the extension and retraction process.

[0041] Please refer to the appendix Figure 6 and the appendix Figure 8 As shown, the telescopic component 6 is connected to a cutter assembly 7. The cutter assembly 7 includes a mounting block 701. The mounting block 701 is slidably connected to the inside of the inner cylinder 406. The left side of the mounting block 701 is fixedly connected to a cutter body 702. The outside of the cutter body 702 is slidably connected to the inside of the inner cylinder 406. Internal threads 703 are provided inside the mounting block 701. External threads 704 are provided on the left side of the outside of the adapter rod 605. The mounting block 701 is connected to the external threads 704 on the adapter rod 605 through the internal threads 703 inside.

[0042] Specifically, the cutter assembly 7 is used for cutting operations. The cutter body 702 is slidably connected to the inner cylinder 406 and is connected to the external thread 704 on the connecting rod 605 through the internal thread 703 of the mounting block 701. The mounting block 701 slides within the inner cylinder 406, enabling the cutter body 702 to be adjusted to the appropriate cutting position at any time. The internal and external thread connection structure ensures the stability and reliability of the cutter assembly 7 during use and prevents loosening. The external thread 704 of the connecting rod 605 cooperates with the internal thread 703 inside the mounting block 701. By rotating the cutter body 702, the convenient disassembly and assembly of the cutter assembly 7 can be achieved, which not only ensures the stability during cutting but also improves the operation flexibility.

[0043] Please refer to the attached Figure 1 , and a fitting 8 is movably connected to the outside of the cutter barrel 3, and a laparoscope 9 is movably connected to the inside of the fitting 8.

[0044] Specifically, the function of the fitting 8 is to connect an external device (such as the cutter barrel 3) to the patient's body. The fitting 8 is connected to the opening of the patient's abdomen, playing a role in sealing and fixing. It may be a flexible or adjustable part to ensure the fit between the device and the patient and prevent air from entering the abdominal cavity, guaranteeing a sterile environment during the operation. The laparoscope 9 is one of the most core parts of the operation and is usually inserted into the patient's body through a small incision (the patient's opening). It can include a light source, a camera, operating tools, etc., and is used to provide a visual field and an operating space during the operation. The laparoscope enters the patient's body through the opening of the fitting 8 and provides a visual field during the operation.

[0045] Please refer to the attached Figure 9 , the control button one 501, the control button two 502, and the control button three 601 can transmit instructions to the central control system. The central control system includes: a control module: sending control instructions to the system through the control button one 501, the control button two 502, and the control button three 601; an analysis module: analyzing and processing the input data through the data processing unit to provide a decision-making basis for the operation of the system; a driving module: performing corresponding actions on the ultrasonic generator 503 and the electric slide rail 602 according to the instructions of the control module and the processing results of the analysis module.

[0046] Specifically, the central control system works in conjunction with the control buttons on the handle 1 and the internal analysis module and drive module; the control module receives the doctor's instructions through control button 1 501, control button 2 502, and control button 3 601 and transmits them to the central control system. The control module is responsible for receiving external instructions and converting them into control signals that the machine can understand, and then operating each component; the analysis module analyzes various parameters during the operation in real time based on the input data to ensure that the tool works under appropriate parameters. For example, it can monitor the temperature, cutting depth, etc. of the tool through sensors to ensure the safety of the operation; the drive module drives the ultrasonic generator 503 and the electric slide rail 602 according to the instructions of the control module and the feedback of the analysis module to achieve precise motion control and ultrasonic function adjustment. The response speed and accuracy of the drive module are crucial for the smoothness and safety of the entire surgical process.

[0047] Working principle: First, the doctor starts the operation by holding the handle 1. The doctor issues instructions to the central control system through control button 1 501, control button 2 502, and control button 3 601 on the handle 1 to start the ultrasonic generator 503 and adjust its working state, and at the same time control the expansion and contraction of the cutter assembly 7.

[0048] Secondly, the high-frequency ultrasonic signal generated by the ultrasonic generator 503 is converted into mechanical vibration through the converter 504, driving the vibration rod 505 to generate high-frequency vibration, and the vibration is transmitted to the blade part to achieve fine cutting and coagulation.

[0049] Next, the doctor uses the knob 2 to adjust the angle of the cutter barrel 3 to meet the surgical requirements of different parts. The pad knife assembly 4 provides support for the tool during the operation. By moving the grip rod 401, the connecting block 402 is pushed, causing the swing block 403 to rotate inside the handle 1, thereby driving the connecting block 405 to move accordingly, causing the inner cylinder 406 to slide inside the cutter barrel 3. The connecting rod 407 on the left side of the outer part of the inner cylinder 406 will also rotate accordingly, causing the pad knife body 408 to retract to clamp the tissue (after cutting is completed, through the elastic action of the spring 404, each component can be reset).

[0050] When cutting is required, through control button 3 601, the electric slide rail 602 drives the sleeve 604 to slide inside the inner cylinder 406, driving the cutter body 702 of the cutter assembly 7 to extend or retract, thereby precisely completing the cutting.

[0051] Finally, after the operation, the cutter body 702 can be retracted into the cutter barrel 3 to avoid injuring the doctor or causing infection, and the cutter body 702 is for single use. Through the threaded connection between the mounting block 701 and the connecting rod 605, it can be unscrewed for convenient replacement, while other parts can be reused after disinfection.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laparoscopic surgical tool, comprising a handle (1), characterized in that, A knob (2) is rotatably connected to the outside of the handle (1). A cutter barrel (3) is fixedly connected to the inside of the knob (2). A cutter cushion assembly (4) is arranged inside the handle (1). An ultrasonic assembly (5) is arranged inside the handle (1). The ultrasonic assembly (5) is connected to a telescopic assembly (6). The telescopic assembly (6) is connected to a cutter assembly (7). A fitting piece (8) is movably connected to the outside of the cutter barrel (3). A laparoscope (9) is movably connected to the inside of the fitting piece (8); The cutter cushion assembly (4) includes a grip rod (401). The grip rod (401) is movably connected inside the handle (1). A connecting block (402) is fixedly connected to the outside of the grip rod (401). A swing block (403) is rotatably connected to the top of the connecting block (402). A spring (404) is arranged inside the handle (1). An adapter block (405) is sleeved on the outside of the swing block (403). An inner cylinder (406) is fixedly connected to the left side of the adapter block (405). A connecting rod (407) is rotatably connected to the outside left side of the inner cylinder (406). A cutter cushion body (408) is fixedly connected to the outside of the connecting rod (407).

2. The laparoscopic surgical tool according to claim 1, characterized in that, The ultrasonic assembly (5) includes a control button one (501). The control button one (501) is installed inside the handle (1). A control button two (502) is installed inside the handle (1). An ultrasonic generator (503) is installed on the upper side inside the handle (1). A converter (504) is installed on the left side of the ultrasonic generator (503). A vibrating rod (505) is arranged inside the converter (504).

3. The laparoscopic surgical tool according to claim 2, characterized in that, The telescopic assembly (6) includes a control button three (601). The control button three (601) is installed on the outside of the handle (1). An electric slide rail (602) is installed on the inner wall of the inner cylinder (406). A moving seat (603) is installed on the outside of the electric slide rail (602). A sleeve (604) is fixedly connected to the top of the moving seat (603). A connecting rod (605) is fixedly connected to the left end of the sleeve (604).

4. A laparoscopic surgical tool according to claim 3, wherein, The cutter assembly (7) includes a mounting block (701). The mounting block (701) is slidably connected inside the inner cylinder (406). A cutter body (702) is fixedly connected to the left side of the mounting block (701). An internal thread (703) is arranged inside the mounting block (701). An external thread (704) is arranged on the outside left side of the connecting rod (605).

5. A laparoscopic surgical tool according to claim 1, characterized in that, The inside of the handle (1) is rotatably connected to the outside of the connecting block (402). The spring (404) is sleeved on the right side of the swing block (403). The inside of the cutter barrel (3) is slidably connected to the outside of the inner cylinder (406). The inner side of the connecting rod (407) is rotatably connected to the outside of the cutter barrel (3).

6. The laparoscopic surgical tool according to claim 2, wherein The output end of the ultrasonic generator (503) is connected to the right side of the converter (504). The vibrating rod (505) is arranged inside the inner cylinder (406).

7. The laparoscopic surgical tool according to claim 3, characterized in that, The exterior of the sleeve (604) is slidably connected to the interior of the inner cylinder (406), and the interior of the sleeve (604) is slidably connected to the exterior of the vibration rod (505).

8. A laparoscopic surgical tool according to claim 4, characterized in that, The mounting block (701) is connected to the external thread (704) on the connecting rod (605) through the internal thread (703) inside it, and the exterior of the cutter body (702) is slidably connected to the interior of the inner cylinder (406).

9. A laparoscopic surgical tool according to claim 4, characterized in that, The control button one (501), control button two (502), and control button three (601) can transmit instructions to the central control system.

10. A laparoscopic surgical tool according to claim 9, characterized in that, The central control system includes: Control module: Sends control instructions to the system through the control button one (501), control button two (502), and control button three (601); Analysis module: Analyzes and processes the input data through the data processing unit to provide a decision-making basis for the operation of the system; Drive module: Performs corresponding actions on the ultrasonic generator (503) and the electric slide rail (602) according to the instructions of the control module and the processing results of the analysis module.

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