Thread by @shoaib9702

#Classification of Guidewires
( very important Topic)
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Guidewires have different properties ,it is classified on different parameters but most practical classification is ""Based on Lesion -Type Classification.
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A.Based on Tip -Flexibility ( Tip -Load )

#Tip Load..Amount of force ( in grams) needed to buckle distal 1cm of Tip

1.Floppy wires (<1.5gm)
2.Intermediate wires (2-4gm)
3.Stiff wires (>4gm)
.............. ..............

B..#Based on Tip -Coating

1.Hydrophilic
2.Hydrophobic
3.No coating

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C..#Based on Tip -Tappering Design

1.Tapered
2.Non -Tapered

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D..#Based on Tip -Style

1.One Piece design
2.Two piece design

E..#Based on Core -Material

1.Stainless steel
2.High tensile Stain less steel
3.Nitinol
4.Hybrid

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F..#Based on Device Support

•Guidewire “shaft/rail support” for device passage is measured as the force required for bending the guidewire 60°at different distances from the guidewire tip .

•It is determined largely by the core diameter, core construction material and pattern of core tapering. The stiffer the shaft, the greater is the support provided for device passage through a tortuous and calcified lesion

1.Light Support
2.Moderate Support
3.Extra support

G..#Based on Target Lesion type

1.Work horse/Front line wires
2.Extra support ( Delivery) wires
3Speciality wires (CTO wires /Tight stenosis)

Note Other special purpose wires names

1.Marker wires
2.Pressure wires
3.Rotablator wires
4.Wiggle wires

#Based on Lesion -Type
( Practical Classification )

1.#Work Horse Wires

Tip Load 0.5-1 gm
Stiffness.Soft
Tappering .Non Tapered
Style One Piece Style mostly
Cover.Spring coil type
Coating .Mostly Hydrophilic ( some are Hydrophobic )
Shaft -Support : Light Support mostly

Workhorse GW strike a nice balance between tip flexibility, shaft support and steerability.

•Workhorse GW are suitable for the majority of cases/lesions.

•They are called “frontline/workhorse guidewires” because one or two of them form the bulk of GW used in any cathlab.

Example

ASAHI company ( Light ,soft ,soon,sion blue,fielder)

Abbot ( BMW,Pilot)

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2.Extra support ( Delivery Guide wires)

Almost Same features as of work horse except shaft support in increased ..Shaft support is Extra support

These guidewires generally have soft tips with a stiffer shaft and shorter core tapering

Example

.(HT -Iron Man ,HT- Extra S`Support ,HT-BHW

,HT - Whisper EC ,Choice Extra support ,Grand slam )

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3.#Speciality wires

Tip Load .1-20gm
Stiffness ( Ranges from Soft to intermediate to Stiff wires )
Tapering . can be tapered & non tapered.
T style .Mostly Core -Tip
T cover Mostly Spring covered
T Coating Mostly Hydrophilic
Shaft support .Moderate -Extrasupport

Example of CTO wires

( Remember two important companies ASAHI & Abbot ,others are Boston,Cordis,Tremu)

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#ASAHI CTO wires

~GAIA First ,2nd ,Third

~Miracle Bros 3,4.5,6,12

~Canfianza ( conquest )9,pro ,pro-12

~Fielder XTR,FC,XT,XT-A

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Abbot wires

~Cross-it 100XT,200XT,300XT,400XT

~Progress40,80,120,140T,200T

~Pilot 50,150,200

~Whisper LS,MS

#Cordis..Shinobi-Plus

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