Chapter 5: Basic Microsurgical/Microvascular/Skull Base Instrumentation
Scissors, Knives, Needle Holders
Cottle Mallet
Alternative Names: Mallet, hammer
Category: General
Purposes: Used for application of force, usually on another instrument, e.g., osteotome, bone graft impactor, chisel, etc.
Varieties: Variable weights. Variable material of mallet and handle.
Japanese Suction
Alternative Names: Fukishima, variable suction, regulated suction tip
Category: General
Purposes: Used for suction of fluids in confined spaces. Teardrop-shaped thumb hole allows regulated style of suction. Also used as a retractor, protection device, and blunt dissection tool when removing tumor or brain parenchyma.
Varieties: Straight or angled. Various diameters of tips.
Bayonet Micro Scissors
Alternative Names: Yasargil micro scissors, micro scissors
Category: Scissors
Purposes: Used for cutting delicate soft tissue in confined spaces. Also used for micro dissection of arachnoid bands and adhesions in deep cranial and spinal cases.
Varieties: Straight, curved, or angled blades. Various lengths of arms.
Ins Scissors
Alternative Names: Lexer-Baby, Bonn, Kelly, iris scissors, micro dissecting scissors
Category: Scissors
Purposes: Useful for cutting very fine, delicate tissue, including vessels. Can be used to extend arteriotomies, isolate bypass grafts, etc.
Varieties: Straight or curved blades. Various arm lengths.
Jameson Tenotomy Scissors
Alternative Names: Jameson-Potts, Jamison-Metz, Jamison-Reynolds, tenotomies, long iris scissors
Category: Scissors
Purposes: Useful for cutting very fine, delicate tissue, including vessels. Can be used to extend arteriotomies, to isolate bypass grafts, in pediatric cases, etc.
Varieties: Straight or curved blades. Various arm lengths.
Knapp Iris Scissors
Alternative Names: Lexer-Baby, Bonn, Kelly, iris scissors, micro dissecting scissors
Category: Scissors
Purposes: Useful for cutting very fine, delicate tissue, including vessels. Can be used to extend arteriotomies, to isolate bypass grafts, in pediatric cases, etc.
Varieties: Straight or curved blades. Various arm lengths.
Potts-DeMartel Scissors
Alternative Names: Potts scissors, Potts-Smith, angled scissors, vascular scissors
Category: Scissors
Purposes: Used for cutting vessels, e.g., extending an arteriotomy or venotomy. Can also be used to cut fine, delicate tissue in deep, closed spaces, e.g., to extend dural opening in intramedullary spine or peripheral nerve cases.
Varieties: Variable instrument lengths. Variable blade lengths and angles.
Vannas Micro Scissors
Alternative Names: Hoyes micro scissors, Westcott scissors, micro scissors
Category: Scissors
Purposes: Used for cutting delicate soft tissue in confined spaces. Also used for micro dissection of arachnoid bands and adhesions in deep cranial and spinal cases.
Varieties: Straight, curved, or angled blades. Various lengths of arms.
Yasargil Bayonet Scissors
Alternative Names: Bayonet scissors, aneurysm scissors
Category: Scissors
Purposes: Used for cutting delicate soft tissue in confined spaces. Also used for gross removal of large tumors or initial cuts in giant aneurysm sacs.
Varieties: Straight, curved, or angled blades. Various lengths of arms.
Yasargil Bayonet Micro Scissors
Alternative Names: Micro scissors, bayonet micro scissors
Category: Scissors
Purposes: Used for cutting delicate soft tissue in confined spaces. Also used for micro dissection of arachnoid bands and adhesions in deep cranial and spinal cases.
Varieties: Straight, curved, or angled blades. Various lengths of arms.
Arachnoid Knife
Alternative Name: Beaver blade
Category: Knives
Purposes: Used to isolate aneurysmal lesion from the parent circulation. Can also be used to ligate bleeding vessels unable to be cauterized, e.g., AVM cases or fistulous lesions, or for temporary occlusion of larger vessels during revascularization procedures, endarterectomies, and tumor resections. For aneurysms, clips can be loaded in various positions, e.g., curve down, angle up, legs up, etc. Newer appliers have adjustable, flexible, or rotating ends, making virtually all clip positions possible. A review of all available systems is beyond the scope of this guide.
Varieties: Infinite. Straight, curved, angled, fenestrated, bayoneted, mini, temporary, and any combination of the above. Several new materials and alloys have been recently introduced. Opening/closing mechanism is also variable. The standard spring compression is demonstrated here. Please see manufacturer’s information guide for more specific mechanics of utilized system.
Diamond Knife
Alternative Name: None
Category: Knives
Purposes: Used for fine dissection or cutting of delicate tissues. Useful in dissecting aneurysmal or other vascular lesions and adherent tumors, or in generalized sharp dissection. A sleeve is pulled over the blade for protection, given its delicate nature.
Varieties: Variable types of handles. Triangular or square diamond blades.
Castroviejo Needle Holder
Alternative Names: Micro needle holder, micro locking needle holder
Category: Needle holders
Purposes: Microsurgical needle holder with locking mechanism reducing pressure required to hold needle. Spring-like opening of jaws when not locked. Used most commonly for microsuturing.
Varieties: Straight or curved jaws. Rounded and flat side arms.
Micro Needle Holder
Alternative Names: Barraquer needle holder, Patton needle holder, Sklar micro needle holder, micro needle driver
Category: Needle holders
Purposes: Non-locking needle holder used for holding and manipulating small needles and suture in confined spaces. Most often used in microvascular, peripheral nerve, and intradural cases.
Varieties: Various lengths of arms. Various sizes of jaws.
Yasargil Bayonet Needle Holder
Alternative Names: Bayonet needle holder, bayonet micro needle holder
Category: Needle holders
Purposes: Non-locking bayonet needle holder used for holding and manipulating small needles and sutures in confined spaces. Most often used in microvascular, intradural, and peripheral nerve/re-anastomoses cases.
Varieties: Various lengths of arms. Various sizes of jaws.
Gerald Forceps without Teeth
Alternative Names: Pickups without teeth, Gerald without, Cushing forceps (incorrect)
Category: Forceps
Purposes: Non-traumatic grasping and holding forceps designed for very delicate tissue or vessels. Can be used to hold vessels or open the vessel lumen. Can also be used for handling tubing and other surgical implants and their cables.
Micro Suture Forceps
Alternative Names: Jewelers, micro forceps
Category: Forceps
Purposes: Used to grasp and manipulate fine, delicate tissue, e.g., nerve or vessels, or as a micro-needle holder. Often used in microvascular, intradural, and peripheral nerve/re-anastomosis procedures.
Varieties: Straight or curved tips. Various lengths of arms.
Round Body Forceps
Alternative Names: Round jeweler’s forceps, round micro forceps
Category: Forceps
Purposes: Used for grasping and manipulating fine, delicate tissue, e.g., nerve or vessels, or as a micro-needle holder. Often used in microvascular, intradural spine, and peripheral nerve/re-anastomosis procedures. Round shaft allows rotation of instrument.
Varieties: Straight or curved tips. Various lengths of arms.
Yasargil Bayonet Bipolar Forceps
Alternative Names: Cushing bipolars, Rhoton forceps, Malis bipolars, bayonet, bipolar forceps, bipolars
Category: Forceps
Purposes: Coagulation of tissue between the tips of the forceps, which must be in close contact to allow current to flow through tissue. Variable current allows highly tailored effectiveness. Can be used as a dissection instrument or for general grasping of delicate tissue.
Varieties: Straight, curved, or angled tips. Insulated tips or not. Irrigating or not. Short and long. Blunt or fine tips.
Yasargil Bipolar Forceps Straight
Alternative Names: Straight Cushing bipolars, straight Rhoton forceps, straight Malis bipolars, straight bipolar forceps, straight bipolars
Category: Forceps
Purposes: Coagulation of tissue between the tips of the forceps, which must be in close contact to allow current to flow through tissue. Variable current allows highly tailored effectiveness. Can be used as a dissection instrument or for general grasping of delicate tissue.
Varieties: Insulated tips or not. Short and long. Blunt or fine tips.
Cooley Clamp
Alternative Names: DeBakey clamp, carotid clamp, bulldog clamp, angled clamp
Category: Clamps
Purposes: Used for temporary occlusion of large blood vessels. Most commonly used for common carotid artery occlusion during endarterectomies, intraoperative internal carotid artery access, etc.
Mixter Right Angle Clamp
Alternative Names: Right angle, right angle hemostat, right angle snap, right angle Adson clamp, right angle Crile clamp
Category: Clamps
Purposes: Used for dissecting and isolating delicate soft tissues, especially around vessels and nerves. Often used to grasp tying sutures to pull them underneath these structures in preparation for ligation. Also used for dissecting tissue underneath or around structures.
Varieties: Variable lengths of arms and handles.
Cushing Vein Retractor
Alternative Names: Vein retractor, Cushing retractor, Sachs retractor
Category: Retractors
Purposes: Retraction, lifting, or isolation of delicate soft tissue and vessels.
Varieties: Solid or fenestrated blade. Variably sized end.
Frazier Dural Retractor
Alternative Names: Dural hook, dural elevator, micro hook, Adson hook, Fisch hook (incorrect)
Category: Retractors
Purposes: Used for retraction and sharp dissection of fine, delicate soft tissue. Most often used to elevate tissues, especially dura. Very sharp and should be handled and exchanged with care.
Henly Retractor
Alternative Names: Mayo-Adams retractor, cervical retractor
Category: Retractors
Purposes: Used for retraction of skin and soft tissues to allow for improved visualization. Used most commonly in cervical spine exposures, but can be used in any small exposure.
Varieties: Sharp or blunt blades. Various lengths, widths, and number of teeth on the blades.
Leyla-Yasargil Retractor Arm
Alternative Names: Fixation base, snake holder, snake charmer
Category: Retractors
Purposes: Fits on the end of the Leyla bar and allows the attachment of one to three flexible arms.
Varieties: Number of attachment sites for flexible arms.
Yasargil Box Connector
Alternative Names: Fixation base, snake holder, snake charmer
Category: Retractors
Purposes: Fits on the end of the Leyla bar and allows the attachment of one to three flexible arms.
Varieties: Number of attachment sites for flexible arms.
