PTFE Applications on Medical Industry

PTFE Coating Applied on The Surface of Medical Equipments

• According to the mass percentage, 40-60 percent of PTFE emulsion, 0.5 percent of defoamer, 0.5 percent of wetting agent, 0.5 percent of flow agent and rest water are mixed to crank out PTFE hydrophilic paint applied to medical appliance;
• The PTFE hydrophilic paint applied to medical appliance is coated to positions needing to be coated on the medical appliance;
• Under the room temperature, after water content in the PTFE hydrophilic paint waiting for being applied to the medical appliance evaporates, the paint is solidified and sintered under a temperature of 120-350 DEG C, namely, the PTFE lubricating hydrophobic coating is formed on the medical appliance.

The application of e-PTFE in the medical

Expanded PTFE (expanded PTFE) is a new type of medical polymer material. It is made of PTFE resin by special processing methods such as stretching. It has a network structure formed by connecting fine fibers. These fine fibers Numerous pores are formed, so that the expanded PTFE can be bent at will, has good blood compatibility, and is resistant to biological aging. It is used to manufacture artificial blood vessels, heart patches and other medical products.

From a medical point of view, it is the most ideal substitute for biological tissue. Due to its special molecular structure, expanded polytetrafluoroethylene is an artificial material with extremely stable physical and chemical properties. At the same time, it has passed 6 million clinical applications for 40 years, including artificial blood vessels (replacement of human diseased arteries and veins), artificial There is no report of clinical rejection after implantation of various parts including dura mater and heart patch, which fully proves that the material has good biocompatibility.

Expanded polytetrafluoroethylene has become an important medical filler and is currently one of the most ideal materials for biological tissue substitutes.

Rhinoplasty Application

According to the specific characteristics of the nose, the expanded polytetrafluoroethylene is carved into an e-PTFE surgical patch, which is placed in the corresponding part of the nose to construct a nasal prosthesis bracket, thereby improving the shape of the nose, and practice indicates that the plastic surgery effect is good.

Especially in the most critical part of the back of the nose and the tip of the nose, implanted with elongated expanded polytetrafluoroethylene that has excellent compatibility with human tissues, and human tissue cells grow into the elongated expanded polytetrafluoroethylene micropores Inside, there will be no adverse reactions such as material movement, collapse or rejection, and at the same time it can prevent the reflection of light, making the facial shape after plastic surgery more natural and realistic.

Application in Heart Valve Surgery

The researchers first sewed a sheet of ultra-microporous expanded polytetrafluoroethylene material on a specific elastic stent to make a synthetic heart valve.

The test results show that the artificial mitral valve synthesized by expanded polytetrafluoroethylene can be completely opened and closed during the cycle of the cycle, and the chordae of each expanded polytetrafluoroethylene artificial mitral valve are in tension. The valves are tightly aligned between the large and small valves, with no visible gaps.

This indicates that the expanded polytetrafluoroethylene artificial mitral valve has good hydrodynamic properties and durability in vitro.

e-PTFE Has Also Successful in Other Body Parts' Medical Applications

Varicose veins of the lower extremities are a common occurrence in human surgery. With the promotion of expanded polytetrafluoroethylene in human medical treatment, researchers have used expanded polytetrafluoroethylene synthetic vascular sheets to perform superficial femoral vein valve annulus Very satisfactory results have been achieved in the treatment of primary deep venous valve insufficiency of the lower extremities.