etching PTFE liner tubing

PTFE is a non-stick material that is resistant to high temperatures and corrosion and is very smooth, and is widely used in military medical food, etc . However, when it needs to be bonded to the surface of another material, or in order to bond standard PTFE to another surface while combining the advantages of multiple materials, a process called “etching” is required etched ptfe liner.
Typical applications include the lining of chemically processed tubing or other equipment used in corrosive environments. When bonding is required, sodium ammonia etching is usually the most economical answer. This process uses a mixture of sodium and ammonia formulated to create a bondable surface quickly and efficiently.
Sodium/ammonia etching services meet all applicable commercial, military and federal specifications for surface preparation of all fluoroelastomer polymers, including. PTFE, PFA, FEP, ETFE, PCTFE, PVDF, PVF, etched ptfe liner etc.
From microchips to full-size rolls, any shape or complexity of fluoroelastomer polymer, including strips, sheets, tubing, molded shapes and machined parts in any configuration can be etched and bonded. This processing can be done on one or more surfaces, or selectively within tight tolerances.
We can custom etch products etched ptfe liner above ID 0.3mm

How did microcatheter technology evolve?

The second phase Microcatheter (1980s to early 21st century) was the emergence of early interventional microcatheters, with the development of the Magic microcatheter and Tracker microcatheter in France and the United States since the 1980s, which had a progressively thinner front end and could be bent at will, and the advent of digital subtraction X-ray machines, which made microcatheter technology move even further forward .

Microcatheter technology can be roughly divided into three stages. The first stage Microcatheter is the infancy of microcatheter endovascular technology, which was first pioneered by Professor Djindjian in France in the late 1960s and early 1970s with super-selective angiography of the external carotid artery and selective spinal angiography.

The third phase Microcatheter (after 2005) was the booming period of coronary microcatheterization, where the flexibility of guidewires, the application and enhancement of microcatheters, and the development of surgical strategies became the new direction of CTO-PCI. In 2005, Prof. Ge Junbo made a preliminary attempt to reverse intervention for CTO in a TCT broadcast. The case was a CTO lesion at the LM bifurcation with good collateral circulation from the RCA to the left crown. The guidewire was unable to pass through the lesion during the forward intervention. Finally, the Runthrough guidewire was reverse fed from the RCA to the LCX, followed by the successful completion of the antegrade guidewire and reverse guidewire Kissing wire. data from a study presented at TCT 2009 showed that the development of reverse technology has greatly improved the success rate of CTO procedures Microcatheter .

micro catheter with Medical Tubing ETCHED PTFE LINER

The micro catheter is a very small diameter reinforced catheter with no strict size definition, but is often empirically referred to as a microcatheter with an outside diameter of 0.70 to 1.30 mm. Microcatheters can be used for guidewire support/exchange, passage of lesions, delivery of embolic agents, stenting, etc.

The microcatheter is composed of a base layer of etched PTFE Liner , a middle layer of stainless steel woven mesh or nickel-titanium spring, and an outer layer of Pebax liner.
The head end of the microcatheter comes with a developer ring for easy positioning and consists of a handle (seat), strain relief sleeve, body, and marker. The body is designed and manufactured to play a key role in the performance of the microcatheter, and typically consists of an inner liner, an intermediate reinforcement layer, an outer polymer layer, and a surface coating.

The liner material is usually a lubricious material (e.g., etched PTFE Liner ) to ensure a smooth lumen; the intermediate reinforcement layer is usually woven or wound with metal wire to increase the strength and pushing force of the catheter. The design of the middle reinforcement layer represents the important properties of the microcatheter for different vascular lesions, e.g.,
The micro catheter the braid + wrap design allows for good proximal braid pushability and good distal wrap flexibility, which is a very good choice for neurovascular delivery, while for CTO lesions, the high stiffness of the braid can help them traverse calcification. In addition, the distal surface of the tubing is usually coated with a certain length of coating material (usually hydrophilic) to enhance the passage of the microcatheter through the vessels and lesions.

PTFE Etched Tubing Liner

Etched PTFE Liner -Aokeray

medical grade is an amazing non-stick material, but what happens when you need to glue it to the surface of another material? In order to put it on (for example, stainless steel), a process called “etching” is required. Typical applications include the lining of chemical processing tanks or other equipment used in harsh environments. When bonding is required, sodium ammonia is used.Etching is performed by placing the fluoropolymer tubing in a sodium solution. The resulting chemical reaction removes fluorine molecules from the carbon-fluorine backbone of the fluoropolymer leaving carbon atoms that are deficient in electrons. When the etched surface of the material is exposed to air, oxygen molecules, water vapor, and hydrogen allow restoration of the electrons. This restoration process results in a group of organic molecules that enables adhesion

When PTFE needs to be bonded to another surface, such as a stainless steel body for a medical device, etching uses a mixture of sodium and ammonia that is formulated to produce a bondable surface quickly and efficiently. Sodium/ammonia etching services meet all applicable commercial, military and federal specifications for surface treatments of all fluoropolymers including: PTFE, PFA, FEP, ETFE, PCTFE, PVDF, PVF and ECTFE. The process can be accomplished on one or more surfaces or selectively within close tolerances.
Note etched tubing PTFE : The etched surface will discolor to a brown appearance.
Can be etched on one side (EOS) (standard) or both sides (E2S).

We now offer a wide range of extruded and etched tubing PTFE heat shrink tubing in a variety of sizes and wall thicknesses as thin as 0.001. Extruded tubing can be etched for easy bonding; most of our ultra-thin tubing can be used with a tolerance of +/-0.013MM.

Now Etched ptfe tubing liner custom size:ID0.45mm UP as inch ID0.017″ UP, thickness as 0.025mm+-0.01mm inch 0.00098″ .the etched ptfe tubing liner have widely used in large medical device companies such as China Minimally Invasive, Epter and others.

Etch PTFE liner :High and low temperature resistance:-200–200℃
Non-stick, spell water, spell oil
Electrical reliability, high insulation 60HZ-60MHZ high and low temperature dielectric constant viscosity are 2.1. even if the surface is damaged due to diving, will not produce conductive tracks.
Volume resistance > 1018ΩM , surface resistance > 2 * 1013ΩM , arc resistance > 165 seconds without leakage
Corrosion resistance
Only elemental fluorine and alkali metals work with it at high temperature, but all other concentrated and dilute inorganic organic acids, alkalis and esters have no effect.
Low water absorption: low absorption rate <0.01%
Non-toxic: physiologically inert
Non-combustibility: does not burn in air. (Oxygen index >95VOL.%)
High transparency: lowest light refraction among all plastics
Weather resistance: light-proof
Etch PTFE tubing Easy to add two: can be self-sealing, can be self-welding, can be flanged, can make coiled tube
PTFE Etched Tubing Liner making video