Endovascular Catheters for Interventionalists
Transcription
Endovascular Catheters for Interventionalists
ANGIOGRAPHIC CATHETERS: A COMPREHENSIVE REVIEW FOR THE INTERVENTIONALIST IN-TRAINING Department of Interventional Radiology, Kaiser Permanente, Los Angeles, CA R Freed; A Urdaneta; R Darflinger; G Vatakencherry SUPRA-AORTIC CATHETER NOMENCLATURE Vascular Catheters Diagnostic Catheters Guide Catheters Vascular catheters are categorized as diagnostic or Diagnostic catheter sizes range from 4F to 6F, and guide. Diagnostic catheters are further categorized into lengths from 50 to 125 cm, respectively. Many catheters selective and flush. Both diagnostic and guide catheters are braided, with a soft tip. have a variety of head shapes to choose from. The name of the shape is consistent among both types of catheters, although there are generally less guide catheter shapes to choose from. Trackability Guide catheters are generally 6F, 7F or 8F and range from 65 to 100 cm in length. Guide catheters have reinforced construction and a much stiffer shaft to provide back-up support for the advancement of guidewires, balloons and stents. Pushability The ability of the catheter to follow the guidewire through tortuous vessels and around corners without pulling the wire out of it intended location. H1 H3 Headhunter 1 Headhunter 3 H1H ! HY1 CBL Headhunter Yadav! !! Modified Headhunter HN3 HN4 Newton III Cerebral Burke! VERT Newton IV Vertebral! Torquability The description of how a force applied by the operator at the hub of the catheter relates to the forward movement of the tip (the leading edge) of the catheter. The steering responsiveness of the catheter tip to handling maneuvers performed at the hub. SIM 1 SIM 2 Simmons I SIM 3 Simmons II JB 1 Simmons III JB 2 Bentson I DAV Bentson II KMP Davis TEGT Kumpe BERN Teg-T Berenstein BER 2 Berenstein II JB 3 MAN CK1 VTK WNBG Bentson III Mani CK1 Vitek Weinberg ! ! CARDIAC Flush Straight Simple Curve Complex Curve Reverse Curve Double Curve Catheter head shape determines function. Catheter head shapes can be categorized as simple and complex. Simple curves have a single primary curve. Complex curves have a primary and secondary curve, and sometimes more. Two types of complex curves include the reverse curve and the double curve. The flush catheter typically round to protect the vessel walls from the whipping effect during power-injected boluses of contrast. CATHETER CONSTRUCTION Surface Coat Surface coatings can modify thrombogenicity, friction coefficient or antimicrobial properties. Internal Internal Mammary Judkins Mammary Left 3.5 Victor Behar Outer Layer o Polyurethane catheters are softer and more pliable and follow guidewires more easily, but have a higher coefficient of friction. o Nylon catheters, which are stiffer and tolerate higher flow rates, are useful for aortography and general arteriography. o Teflon is the stiffest material and is used mainly for dilators and sheaths. Tip A rounded tip is considered to be less traumatic than square cut tubing or bevel ended tubing which is easier to insert. Right Coronary Bypass Reinforcement Many catheters have single or double wire-braiding for extra torquability. Highly braided catheters, while having excellent torque control, tend to be “all or nothing” in their response. ! Judkins Left 4.0 Left Coronary Amplatz Left 1 Bypass Left Internal Mammary 1 Amplatz Left 2 Judkins Right 3.5 Judkins Right 4.0 Amplatz Left 3 Amplatz Right 1 Left Internal Mammary 2 Sones 1 Amplatz Right Amplatz Right 2 1 Modified Saphenous Vein Graft Right Saphenous Vein Graft Left AORTA CATHETER SELECTION Sones 3 Sones 2 PULMONARY C A E B D CATHETER SELECTION – Select a catheter that points in the general direction you wish to travel. For example, if you want to cross the aortic bifurcation, you need at least the curvature of a cobra catheter. A) TIP LENGTH – Increased length offers more stability in target vessel at the cost of maneuverability in the parent vessel. B) PRIMARY CURVE – Choose the optimal curve by assessing the angle of the target vessel from its parent artery. C) SECONDARY CURVE – Choose the optimal curve by assessing the width of the parent vessel. D) TERTIARY CURVE – Choose the optimal curve by assessing normal curvature of the parent vessel. E) CATHETER LENGTH – o Shorter length catheters (50 cm) are used for the contralateral iliac artery injections. o Mid length catheters (65 cm) are used for the visceral vessel cannulation (renal, celiac, superior mesenteric). o Longer length catheters (100-125 cm) are used for the abdominal arch and its branches. PIG TR STR UNIV Pigtail Tennis Racket Straight Universal Flush Omni Flush !! APC GPC Van Aman Grollman BRONCHIAL, SPINAL MIK RENAL CHG2.5 CHG-B CHG-C CHG-E Mickaelson Chung 2.5 Chung B Chung C Chung E C1 C2 C3 Cobra I Cobra II RDC 1 RDC Cobra III ! Renal Double Curve Small! Omni Sos Renal Double Curve! VISCERAL CATHETER HANDLING VS VS 1 Visceral Visceral 1 VS 2 Visceral 2! SHK 0.8 SHK 1.0 Shepard Hook 0.8! Shepard Hook 1.0! RC 1 RC 2 J Curve I J Curve II Omni Sos Rosch Uni Select II! RIM USL 2 Inferior Mesenteric! The aorta spin technique for reforming a complex curve catheter. Simultaneous spinning and pushing. MPA 1 MPA Multipurpose A Normal Curve! MPB MPC MPD Multipurpose C Multipurpose A Multipurpose B Large Curve! Small Curve! Multipurpose D LEV 1 HS Levin 1 Hockey Stick! UTERINE The Waltman Loop technique. To get up and over the aortic bifurcation. To form a complex curve catheter in the left subclavian artery. TC-BNK Tight Curve Binkert To form a figure-of-eight or reverse curve to cannulate the right carotid. To position a simple curve end-hole catheter in the innominate artery. UP & OVER To form a loop in a complex curve catheter off the aortic valve. TC RUC Tight Curve! Roberts Uterine Catheter! CONTRA I CONTRA II J Contralateral I Contralateral II J Curve REFERENCES 1. OSBORN, A. DIAGNOSTIC CEREBRAL ANGIOGRAPHY. 1999, 2ND EDITION. PHILADEPHIA, PA: LIPPINCOTT WILLIAMS & WILKINS. 2. SCHNEIDER, P. ENDOVASCULAR SKILLS. 2009, 3RD EDITION. NEW YORK, NY: INFORMA HEALTHCARE. ✔ 3. KAUFMAN, J. VASCULAR & INTERVENTIONAL RADIOLOGY, THE REQUISITES. 2004, 1ST EDITION. PHILADELPHIA, PA: ELSEVIER. 4. CORDIS PRODUCT CATALOG. 5. COOK PRODUCT CATALOG. 6. MERIT PRODUCT CATALOG. !