How classified vascular interventional surgical robots?

vascular interventional surgical robots classified

The vascular interventional surgery robot is the eyes, hands and brain of the doctor. Vascular intervention is an operational technique that uses instruments such as puncture needles, guidewires, (medical PTFE ETCH TUBING FEP HS PEBAX manufactured by AOKERAY provides high quality thin-walled medical tubing for this purpose) catheters for diagnosis and treatment via vascular pathways under the guidance of medical imaging. The procedure of vascular intervention is mainly divided into: puncture, access establishment, imaging, balloon pre-dilation, stent release, and withdrawal of guidewire catheter. Currently, the vascular interventional surgery robot can assist in most of the procedure steps, except for the trivial operations such as puncture and replacement of guidewires and catheters.
According to the functional classification, vascular interventional surgical robots can be divided into two categories: those that assist physicians in performing vascular interventional electrophysiological examinations or treatments, and those that assist physicians in completing angioplasty. The former requires the use of special vascular interventional instruments and the manipulation of active marker catheters and electrode catheters under magnetic navigation, while various types of intracavitary operations such as balloon and stent pushing cannot be performed; the latter is compatible with conventional interventional instruments such as smaller diameter catheters and guidewires, and can perform most of the operations in vascular interventional procedures without customizing special instruments.

According to the classification of application procedures, vascular interventional robots are mainly divided into three categories: coronary intervention, neurointervention, and peripheral intervention (including aortic intervention). Globally, coronary intervention is the most mature, with a large number of PCI (percutaneous coronary intervention) procedures each year, so most vascular interventional surgery robot companies are the first to apply their robots to PCI procedures.

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 .

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