"Stainless Steel Trocar" refers to a "stainless steel cannula needle". The following is an introduction to it:
I. Definition and Structure
A stainless steel trocar is a medical device mainly composed of two parts: a needle core and a cannula, both made of stainless steel. The front end of the needle core is sharp and is used to penetrate tissues. The cannula fits over the needle core, and its inner diameter is adapted to the needle core. After a successful puncture, the needle core is withdrawn, and the cannula remains in the tissue, serving as a channel for subsequent operations, such as introducing other instruments, extracting liquids or gases, etc.
II. Working Principle
During use, the needle core is inserted into the cannula to make them fit closely. The doctor holds the trocar and punctures it into the target tissue or body cavity at an appropriate angle and with the right force. When the predetermined position is reached, the needle core is pulled out. At this time, the cannula remains in the tissue, forming a channel for operation. Subsequently, according to specific medical needs, corresponding operations can be carried out through this channel, such as injecting drugs, collecting samples, or inserting instruments like an endoscope.
III. Features and Advantages
Strength and Durability: The stainless steel material has high strength and hardness, and is not easy to bend or break. It can withstand multiple puncture operations, ensuring the service life of the instrument.
Corrosion Resistance: The good corrosion resistance of stainless steel enables it not to rust or be corroded easily when in contact with human body fluids, disinfectants, and other substances, ensuring the safety and reliability of the instrument and reducing the risk of infection.
Precise Puncture: The sharp design of the needle core helps to achieve precise puncture, which can accurately reach the target position and reduce damage to surrounding tissues.
Diverse Specifications: According to different clinical needs, stainless steel trocars of various specifications can be provided, including different lengths, diameters, etc., to meet the requirements of different parts and different operations.
IV. Application Scenarios
Surgical Operations: In minimally invasive surgeries such as laparoscopic surgery and thoracoscopic surgery, stainless steel trocars are often used to establish surgical channels so that surgical instruments, endoscopes, etc. can be introduced into the body cavity for operation.
Interventional Therapy: For example, in vascular interventional therapy, it can be used to puncture blood vessels to establish a pathway for operations such as angiography and stent placement. In tumor interventional therapy, it can be used to puncture tumor tissues for drug injection or ablation treatment.
Puncture Biopsy: It is used to obtain samples from human tissues or organs for pathological examination, such as liver puncture biopsy and kidney puncture biopsy, etc., to help doctors make a clear diagnosis of diseases.
Extracting Liquids or Gases: It can be used to puncture parts such as the thoracic cavity, abdominal cavity, and joint cavity to extract effusions and gases to relieve patients' symptoms, such as the puncture and drainage of pleural effusion.
V. Precautions for Use
Strict Disinfection: Before use, the stainless steel trocar must be strictly disinfected and sterilized to prevent cross-infection.
Proper Operation: Doctors should be proficient in the operation method of the trocar and perform the puncture strictly in accordance with the operation procedures to avoid tissue damage or other complications caused by improper operation.
Inspect the Instrument: Carefully check the integrity of the trocar before use to ensure that the needle core and cannula are not damaged or deformed and fit closely.
Post-operative Treatment: After use, properly handle the trocar and dispose of it according to the regulations for medical waste treatment to prevent environmental pollution and cross-infection.
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