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Microcatheters

Microcatheters can be described as a thin wall, small diameter tube, through which the devices and medicine can be delivered and is mainly used in minimally invasive procedures. These small catheters are ideal for navigating through the arteries and widely used during percutaneous coronary as well as neurovascular interventions.
Microcatheter can be categorized according to the number of lumen and shape of the catheter.
 
1. Single lumen (based on size of catheter)

  1. Standard (Corsair Pro, Tornus, Turnpike, Turnpike Spiral, Teleport control, M-Cath, Mamba, Nhancer Pro X, Mizuki )
  2. Small (Caravel, Corsair XS, Turnpike LP, FineCross, Teleport, MicroCross 14, Mamba Flex)

2. Dual lumen (Twin-Pass Torque & Twin-Pass, Sasuke, Crusade, FineDuo, NHancer Rx, ReCross)
3. Angulated (SuperCross, Venture, Swift Ninja)

Single Lumen Microcatheter

It is mainly used for coronary guidewire support and exchange especially in complex coronary intervention.

Caravel

  • Caravel is a low profile microcatheter specifically designed for high performance in tortuous anatomy and microchannels.
  • It is a push only, non-torque microcatheter.
  • Excellent crossing profile: 1.9Fr (0.62mm)
  • 2 Caravels fit in a 6Fr guide catheter

 

Corsair Pro

  • Taper soft tip (up to 1.3 Fr) and stainless steel coil shaft with 10 braided wires
  • All-purpose torqueable microcatheter that is highly useful in chronic total occlusion and complex PCI procedures
  • Rotation limited up to 10 times in each direction

 

Corsair Pro XS

  • Corsair Pro XS is designed to be the lower profile torqueable microcatheter useful in complex PCI and CTO procedures, especially retrograde CTO cases
  • Tip entry is 1.3F with crossing profile 2.1F

 

Tornus

  • Contains a full stainless steel coil shaft that provide outstanding support, pushability, and torque performance when attempting to cross difficult lesions
  • Shaft structure enables rotation of the catheter, providing excellent crossability
  • It can be used for guide wire support, lesion crossing, and guide wire exchange

 

Corsair Armet

  • It is a durable metal tipped torqueable microcatheter designed to enhance crossing of fibrous or calcified peripheral lesions
  • With tip entry 1.5 F and a low entry profile 2.3Fr, it offers resistant to trapping during lesion crossing due to metal tip

 

Turnpike (Teleflex)

  • Unique 5-layer composite shaft provides an ideal combination of flexibility and torque to help navigate through complex anatomy
  • Dual-layer bidirectional coils facilitate torque transmission when rotating the catheter in both a clockwise and counterclockwise fashion
  • Workhorse antegrade device, as well as retrograde escalation device for increasing torque power and guidewire support in resistant septal collaterals

 
Caution

  • Do not rotate the catheter more than two (2) consecutive 360° rotations in either direction if the distal tip is not also rotating and advancing, as it may result in separation of the catheter, damage to the catheter, or vessel injury

 
Turnpike Spiral

  • The Turnpike® Spiral Catheter has the same construction as the standard Turnpike® Catheter, with the addition of an outer coil attached to the distal 3 cm of the catheter shaft, which provides additional rotational advancement in resistant lesions
  • Caution:  It is contraindicated for use in vessels with an effective diameter that is smaller than 1 mm. Therefore, it is not intended to be used as a retrograde coronary device.

 
Turnpike Gold

  • The Turnpike® Gold Catheter has the same shaft construction as both the standard and spiral versions, but replaces the soft polymer tip with a gold-plated, stainless steel tip for added rotational advancement through resistant lesions
  • Available in 135cm and 150cm but it is contraindicated for use in vessels with an effective diameter smaller than 1mm and hence, not intended to be used as a retrograde coronary device

 
Turnpike LP

  • The Turnpike® LP Catheter is similar to the standard Turnpike® Catheter, but with a lower distal shaft profile and increased flexibility on the distal shaft and tip
  • Its lower profile and increased flexibility makes the 150 cm Turnpike® LP Catheter an ideal tool for navigating small and tortuous retrograde collateral vessels; while the 135 cm Turnpike® LP Catheter can be used for antegrade procedures

Comparison of Torqueable Catheters

FineCross (Terumo)

  • FINECROSS MG stainless steel braid construction is designed to provide strength, responsiveness and support for improved pushability to access and cross complex lesions
  • Tapered inner and outer diameters, from 2.6Fr to 1.8 Fr over the entire length

 

Teleport (CSI)

  • It is a low profile catheter (entry profile 0.019 inch) which offers better pushability for navigation inside lesions and micro channels
  • HYbrid BRAiding + Coil (HYBRACOIL) construction for guidewire support and crossing

 

Teleport Control (CSI)

  • Teleport Control applies thicker braiding for extra torqueability with an entry profile of 0.019 inch

 

Mamba (Boston Scientific)

  • 4F crossing profile
  • 3 coil taper zones for exceptional antegrade wire penetration support
  • Highly pushable and torqueable

 

Mamba Flex 135/150
 

  • 1F crossing profile
  • 5 coil taper zones for enhanced flexibility, deliverability, and wire follow
  • Excellent deliverability through tortuous vessels
  • 135 cm length for antegrade and 150 cm length for retrograde

Dual Lumen Catheters

Dual lumen microcatheters act like two microcatheter and make guide wire exchange easier while facilitating to navigate into acute bifurcation lesions.
 
Sasuke (Asahi)

  • Dual lumen catheter with 6.5 mm tip to OTW port negates the need for deep engagement in side branches and complex lesions
  • With double stainless steel core, it provides excellent kink resistance and pushability

 

Twin-pass and Twin-pass Torque Dual Access Catheter (Teleflex)

  • The dual lumen innovative design provides the ability to leave the guidewire in-place while the second lumen is used for advancement of a second 0.014” guidewire or sub selectively infuse/deliver diagnostic and therapeutic agents

 

Crusade (Kaneka)

  • Provides antegrade wire support
  • Facilitates wiring of side branches
  • Efficient wiring of stent structs
  • Distal tip length: 6.5mm

 

FineDuo (Terumo)

  • A low profile, multifunctional, dual lumen micro-catheter that provides robust support and easy access to complex coronary vasculature
  • Distal tip length: 6.5mm

 

NHancer Rx Dual lumen Catheter (IMDS)

  • NHancer Rx is a dual lumen Rapid Exchange single use device, consisting of a hub, a shaft, a distal tip at the Rx section and a proximal tip at the OTW section.
  • Distal tip length: 6.5mm

 

Angulated Microcatheters

Continuous advance in devices technology including guidewire, balloon and stent, as well as the enhanced operator experience has significantly increased the procedural success rate of PCI. However, certain anatomical conditions, such as severe vessel tortuosity or angulation, and ostial calcified lesions demand specific device to overcome technical challenges.

Hence, steerable or angulated microcatheter are invented to counter anatomical challenges and perform a successful coronary intervention. There are three available angulated microcatheters on the market.

SuperCross (Teleflex)

  • SuperCross Microcatheters provide support in tortuous anatomy and navigating bifurcated vessels
  • Multiple tip options: Straight Flexible tip (FT), 45°, 90°, 120°, 90° XT (extended tip)
  • Straight FT version has a stiffer tip for more supportive delivery and increased pushability to access complex anatomy

Venture Catheters (Teleflex)

  • The catheter tip be deflected up to 90° to precisely direct guidewires around bends and tortuosity during complex cases
  • Hydrophilic coating on the distal 24 cm (RX) or 45 cm (OTW) provides excellent lubricity for delivery
  • 8 mm distal tip platinum construction provides excellent radiopacity

Swiftninja Steerable Microcatheter (Merit Medical)

  • A straight tip catheter that articulates up to 180 degrees in opposing directions to facilitate for challenging side branch wiring and intervention
  • Once the tip is positioned at desired location, it can be ‘locked’ to hold the shape in that position
Case ExamplesEducational Content

ATHERECTOMY COMPLICATIONS

Case ExamplesEducational Content

BYPASS GRAFT COMPLICATIONS

ModelBurst (ATM)Diameter (mm)Balloon Length (mm)              
681215202530
MINI TREK (CTO INDICATED)1.271.2
1.561.5
2.172✓*✓*
TREK2.372.25
2.672.5
2.912.75
3.113
3.53.25
3.73.5
3.943.75
4.324
4.864.5
5.365
*Only available as RX, not as OTW. Other sizes available in both versions.
Retrieved on April 07 2022 from Abbott product ordering information. Please look at the company's files for the latest available data on device configurations and avilability in your area.

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