Bipolar ultrasonic knife head and preparation method thereof
An ultrasonic knife and knife head technology, applied in the field of medical devices, can solve the problems of poor thermal diffusion of the knife head, sticky tissue of the knife head, high energy output, and achieve the effects of energy concentration, not easy to fall off, and reduction of thermal diffusion.
Pending Publication Date: 2021-12-21
武汉半边天医疗技术发展有限公司
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- Summary
- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
At present, the problem of bipolar ultrasonic scalpel is that due to the high energy output, the thermal diffusion of the cutter head is easy to be poor. In most cases, the surrounding normal tissues will be damaged, and the cutter head will stick to the tissue.
Method used
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Experimental program
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Effect test
Embodiment 1
[0033] 1. At room temperature, immerse the cutter head section on the cutter rod in the acidic sand surface agent, soak for 5 minutes, take it out, rinse it with clean water immediately, remove the residual solution, and measure the surface roughness of the cutter head substrate at this time ( Ra) up to 3.0 μm; after removing the residual solution, use detergent to soak (the function of detergent is to remove the oil stain on the surface of the cutter head and prevent the coating from falling off. Currently, washing powder is used and soaked in water at 40-50°C for 10 minutes) 1. Rinse with clean water, dry, and remove the grease and dust on the surface of the cutter head section;
[0034] 2. Place the cutter bar on the fixed frame and wait for the primer to be sprayed; note that in order to prevent the surface from being oxidized and lose its adhesion, the cutter head must be sprayed with a water-based primer within 30 minutes after being treated with the acid sand surface age...
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Abstract
The invention discloses a bipolar ultrasonic knife head and a preparation method thereof. A base body of the bipolar ultrasonic knife head is composed of a knife edge part, a knife back part and a knife rod connecting part. The knife back part and the knife rod connecting part are coated with heat dissipation preventing coatings. During preparation, a knife head section is integrally corroded through an acid sand surface agent till the surface roughness of the knife head section ranges from 2.0 micrometers to 3.5 micrometers; then polytetrafluoroethylene is sprayed to the whole knife head section, the coating of a to-be-polished part is wiped away, and the knife head section is cooled to the room temperature after being baked and cured at the temperature ranging from 170 to 190 DEG C; then a polytetrafluoroethylene-perfluoroalkyl vinyl ether copolymer is sprayed to the whole knife head section, the coating of the to-be-polished part is wiped away, and the knife head section is cooled to the room temperature after being baked and cured at the temperature ranging from 370 to 390 DEG C; and finally, the to-be-polished part is polished, and the knife edge part is formed. According to the bipolar ultrasonic knife head, on one hand, the situation that the knife head adheres to surrounding normal tissue can be avoided, on the other hand, energy of the knife head can be concentrated to a knife edge, and the cutting efficiency is improved; and the heat dissipation preventing coatings prepared on the bipolar ultrasonic knife head are not prone to falling off.
Description
technical field [0001] The invention relates to the technical field of medical devices, and more specifically relates to a bipolar ultrasonic scalpel head and a preparation method thereof. Background technique [0002] The ultrasonic knife is composed of main components such as the host, handle, knife head, and pedals. There is a transducer in the handle, which converts the high-frequency electric energy provided by the host generator into ultrasonic mechanical vibration energy, and transmits it to the cutter head while transmitting ultrasonic energy, which generates thermal effect of mechanical vibration to break the hydrogen bond of tissue protein, Protein denaturation and coagulation, especially using the mechanical energy and thermal energy generated by it to coagulate, stop bleeding and cut tissues, etc., the vibration frequency of the cutter head is about 55.5kHz. The ultrasonic cutter head has two leaves, one is the working leaf for applying ultrasound, and the other...
Claims
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IPC IPC(8): A61B17/32B05D7/14B05D7/24B05D3/10A61L31/10A61L31/14
CPCA61B17/320068B05D7/14B05D7/24B05D3/102A61L31/10A61L31/14A61B2017/320082A61B2017/00831B05D2506/15A61L2420/08A61B2017/00526
Inventor 邱学文董伟
Owner 武汉半边天医疗技术发展有限公司