Introduction to GAIA Series Guidewires | ASAHI (Part 1)

Interventional guidewires play a pivotal role in the field of vascular intervention. A guidewire with good performance is one of the key factors for the success of interventional surgery. Interventional guidewires play the role of a "bridge" in interventional surgery. This issue will briefly introduce the vascular interventional guidewire Gaia guidewire produced by Asahi Intech, a leading guidewire manufacturer.

I. Introduction to GAIA series guide wires

The Gaia series guidewire also belongs to the Sion Tecc guidewire category. It contains the general name of ACT ONE's new ASAHI guidewire design. The tip of the core wire is about 10 microns thick. At the tip of such a small core wire With the addition of a small part (ACT ONE), this is the unique composite dual-core structure design of the guidewire. The new concept increases the infinite possibilities of guidewire control, and you can follow your heart wherever you want.

The features of Sion Tecc guidewire are as follows:

1) Excellent tip durability;

2) Balanced tip softness and maneuverability;

3) Torque transmission without jumps;

Figure 1. Schematic diagram of the Sion Tecc guidewire structure.

Figure 2. Schematic diagram of the common guidewire structure.

II. Detailed explanation of GAIA series guidewire products

ASAHI has launched a series of Sion Tecc guidewire products. Today we will mainly introduce the features of the three products of GAIA series guidewires - First/Second/Third. The basic information of the three guidewires is shown in the following table:

2.1? Structural composition

1) 0.014'' PTCA guidewire, stainless steel core wire + composite core (ACT ONE rope spring structure, round core wire structure); 15cm spring coil with a tapered guidewire tip, GAIA has a tiny pre-shaped tip; has three tapered gradient tip designs, namely: GAIA FIRST 0.010'' tip outer diameter, GAIA SECOND 0.011'' tip outer diameter and GAIA THIRD 0.012'' tip outer diameter;

2) 16cm coiled spring structure;

3) Head end weight: GAIA FIRST is 1.7g, GAIA SECOND is 3.5g and GAIA THIRD is 4.5g; GAIA FIRST and GAIA SECOND have no residual parts, GAIA THIRD is mainly used for hard plaques;

4) Length of the developing area: 15cm;

5) 190cm and 300cm working lengths are optional, with a 1mm pre-shaped guide wire tip; the push rod is green in appearance and its surface is coated with PTFE;

6) It has a torque control performance of nearly 1:1;

2.2 Performance characteristics

In the use of CTO lesions, GAIA is a special guidewire with high maneuverability; it can achieve almost true 1:1 torsion performance in the patient's body. The middle tip weight of this series of guidewires combines good flexibility and Tapered tip shape increases penetration (improves guidewire penetration performance); balances core wire flexibility and deflection.

Deflection control/direction control concept:

AWE and RWE techniques can be used when the condition of the vessel is known, and the guidewire focuses on precise control and navigation performance. Makeknuckle operations can be performed; GAIA THIRD is often used for re-entry operations in R-CART situations; GAIA FIRST and GAIA SECOND can control the visibility (deflection controllable) in the navigation of CTO lesions, and GAIA THIRD has controllable CTO penetration performance;

2.3 Usage skills

Direction control - change the route of the guidewire by rotating the tip to control the direction;

Deflection control - deflect to track the guidewire inside the lesion;

In this concept, the person manipulating the guidewire must accurately and control the movement of the guidewire and use slow circling rotation; when the vascular path is known, the guidewire slowly moves forward following the vascular path, and when tactile feedback is available , when stuck on a hard plaque, a slight withdrawal of the guidewire is required, and then precise rotation and deflection to the other direction, into a less stiff part, to gain more distal advancement distance;

Focus on precise control and navigation - direction and deflection combined with precision. Unlike traditional slide and drill techniques, the guidewire is rotated quickly with a torquer. With precise direction/deflection control, many antegrade procedures can be completed using only the AWE technique without the need for other techniques such as the ADR technique. In addition, precise antegrade control and re-passing of calcified plaques can be achieved when performing the dual-guidewire parallel manipulation technique using a double-lumen microcatheter and GAIA guidewire;

Even the strong penetration of GAIA is easily deflected thanks to its moderate tip weight in the plaque structure, rather than straight like traditional rigid guidewires; during procedures requiring precise navigation performance, GAIA guidewires easily enter the subintimal tracking to produce hematomas. Due to uncontrolled manipulation, many intimal tears are possible; it is difficult to enter the vessel lumen from the subintimal space afterwards. When this happens, changing the guidewire to a polymer sheath like Gladius allows easier propagation to the true distal lumen;

GAIA THIRD is often used for re-entry operations in R-CART situations. Do not use GAIA series guidewires when CTO lesions are unclear.

III. Conclusion

Interventional guidewires are important tools for interventional doctors during surgery. The selection and correct operation of the guidewires largely determine whether the surgery can be successful.?

Dongguan Fortune Medical Technology Co., Ltd.

Fortune Medical provides professional design, development, and manufacturing solutions for interventional and implantable medical devices. We offer high-quality, traceable materials for interventional and implantable equipment, including implant-grade absorbable polymers, filaments, PET heat shrink tubing, implant-grade nitinol alloys, and more. Additionally, we provide custom machining services such as absorbable polymer molding and precision metal machining. We are committed to solving complex problems so that our medtech customers can bring innovative new products to the life sciences market and improve global healthcare.

Our company is located in Dongguan City, Guangdong Province, China. Situated in the scenic Greater Bay Area, Dongguan is known as the 'world's factory' with a highly developed industrial supply chain, enabling us to achieve fast delivery times. Fortune Medical collaborates with global medical device manufacturers to expedite the development of groundbreaking medical products, enhancing medical technology possibilities and improving global patient care. We are flexible to the needs of our customer and can support projects at any level, from initial concept to design, prototyping, and high-volume manufacturing.