Abstract: Described herein are elongate devices for modifying tissue having a plurality of flexibly connected rungs or links, and methods of using them, including methods of using them to decompress stenotic spinal tissue. These devices may be included as part of a system for modifying tissue. In general, these devices include a plurality of blades positioned on (or formed from) rungs that are flexibly connected. The rungs are typically rigid, somewhat flat and wider than they are long (e.g., rectangular). The rungs may be arranged, ladder like, and may be connected by a flexible connector substrate or between two or more cables. Different sized rungs may be used. The blades (on the rungs) may be arranged in a staggered arrangement. A tissue-collection or tissue capture element may be used to collect the cut or modified tissue.

Abstract: A chisel system for harvesting an implantable graft from an area of a human having a cartilage overlying a condyle, according to which a module is provided that has one end connected to a handle. A cutting surface is formed at the other end of the module that cuts through the cartilage and condyle.

Abstract: A surgical instrument, in particular a laminectomy rongeur or a conchotome, with a shaft and with a one-piece sliding part, longitudinally displaceable relative to the shaft, with which for longitudinal displacement a grip part is associated which is pivotable about a pivot axis, wherein the sliding part is able to be transferred from a working position, in which the sliding part is guided longitudinally displaceably on the shaft in a guide, into a cleaning position, in which the sliding part is freed from the guide and is pivotable relative the shaft about a rotation axis oriented perpendicularly to the longitudinal extent of the shaft. The rotation axis is aligned perpendicularly to the pivot axis of the pivotable grip part.

Abstract: A single use bone cutter comprised of a plate with a plurality of insert blade enclosures is described. The insert blade enclosures are arranged in a spiral pattern about the plate and are further positioned at varying height intervals through the thickness of the plate. The bone cutter provides a means whereby the insert blades can be easily positioned within the plurality of blade enclosures to provide a wide array of cutting diameters.

Abstract: Provided is an integrated alveolar bone dilating apparatus for dental implant. The apparatus includes a grip, a stopper, and a dilating part. The grip has a cylindrical shape. The stopper is disposed under the grip and has a diameter greater than a diameter of the grip. The dilating part is disposed under the stopper. Here, the dilating part includes a dilator reduced in diameter toward a lower portion thereof and having an inverted conic shape with a sharp tip, and two blades disposed on both sides of the dilator and being sharp toward the outside.

Abstract: Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. Some of the bone removal devices include expandable members which may be used to control the forced exerted and/or position of the bone removal mechanism, and to protect neurovascular structures and other soft tissue structures from the bone removal mechanism. Other bone removal devices include a trephine with a viewing window and a guide wire lumen used to position the trephine at a target tissue site using an anchored wire. The viewing window may be used to monitor structures or tissues adjacent to the target tissue site.

Abstract: A single use bone cutter comprised of two concentric cylinders and a series of insert blades or cutter disc is described. The cutter blades or cutter disc is preferably positioned at the distal end of the cutter. The bone cutter also comprises a guide rod that aids in the line of sight when using the cutter device.

Abstract: A surgical punch has a cartridge for collecting the resected chips cut off in successive punch cuts. The cartridge is a replaceable disposable commodity. The cartridge consists of a casing and a tooth rail which is guided longitudinally displaceable relative to the casing. Once the cartridge is inserted, the casing is fixed on the upper part of the punch, while the tooth rail is fixed on the lower part of the punch. A transport serration is formed in the casing. The tooth rail has a retaining serration. During the opening and closing movement of the punch, the transport serration and the retaining serration interact as transport mechanism which displaces the cut off resected chips in the cartridge in the proximal direction.

Abstract: A Kerrison rongeur employing a shearing/cutting or grasping mechanism, and suited for specific cutting and sampling bone, cartilage and soft tissue. A slideable upper member has on its advancing face a cutting element that moves past an opposing cutting element on a stationary footplate to produce a shearing action of tissue positioned within the jaws. The cutting element of the slideable member may move past the stationary member on the outside in an overbite situation or on the inside in an underbite situation. A hybrid over/underbite jaw is also contemplated along with a guillotine cutting element and a textured grasping element. In operation, the tissue is placed between the jaw and footplate, and the former is advanced towards the latter to cut and/or grasp and remove for a surgical site.

Abstract: A chisel includes a hammered portion to be hammered which is provided so as to project from a middle or an end of a handle and extend to pass through a portion on an extended line in the direction opposite to the direction of the blade. Even if the chisel is hammered in a state where a tip of the blade thereof is not inserted into a bone, the chisel easily advances in the direction of the blade, thereby reducing a possibility that the blade slides on a surface of the bone.

Abstract: An improved rongeur for cutting bone or cartilage comprising two shaft members capable of reciprocating motion relative to each other wherein one shaft member terminates in a foot plate and the other shaft member comprises a combined cutting element and storage member is disclosed. The combined cutting element and storage member has a cutting edge at its distal end and a storage chamber proximate the cutting edge for collecting and storing cut pieces of bone or cartilage in an amount greater than the maximum bone or cartilage capable of being cut in a single full cut. The combined cutting element and storage member is truly disposable, rather than merely replaceable and requires the use of no tools or special assembly. The rongeur may be manually activated or activated by a solenoid and powered by a battery.

Abstract: A orthopedic/spine bone mill comprising a vessel and a rotatable grinding tool to produce ground autologous and or allograft bone particles for surgical bone reconstruction use, wherein the vessel includes a wall defining a circular cylindrical chamber having a concentric axis. The vessel further includes generally concave or a cup shaped bottom wall which corresponds to the shape of the cutting blade and a lid adapted to be removably connected to the vessel. The lid includes an opening coincident with the axis. The grinding tool includes an elongated shaft extending through the opening in the Jid along the axis with a cutting blade mounted to the shaft within the chamber whereby the cutting blade can be rotated by motive device, such as a drill find in the operating room, engaging the shaft exterior of the vessel to cut bone, placed in the vessel, into said bone particles.

Abstract: The present disclosure relates to a microfracture pick having a shaft and a handle. The shift has a proximal end and a distal end, wherein the distal end includes an angled tip. The handle has a body with a first end portion, a second end portion, and an impact surface located therebetween. The handle is operatively coupled to the proximal end of the shaft at the first end portion. Methods of microfracture stimulation are also disclosed.

Abstract: A tissue processing device, including a housing defining a first passage through at least a portion thereof, the first passage defining a longitudinal axis; a first processing member rotatably coupled to the housing and extending across at least a portion of the first passage; and a second processing member rotatably coupled to the housing and extending across at least a portion of the first passage, the second processing member being substantially parallel to the first processing member, the second member being offset from the first processing member in a first direction substantially parallel to the longitudinal axis and in a second direction substantially transverse to the longitudinal axis.

Abstract: We describe various alignable tools, in particular, trials and chisels, that may be used in preparing an intervertebral site in a spine, the site being suitable for placement of a prosthetic intervertebral disc as a replacement for a natural disc in that spine. We also describe methods of using those tools.

Abstract: An improved rongeur for cutting bone or cartilage comprising two shaft members capable of reciprocating motion relative to each other wherein one shaft member terminates in a foot plate and the other shaft member comprises a combined cutting element and storage member is disclosed. The combined cutting element and storage member has a cutting edge at its distal end and a storage chamber proximate the cutting edge for collecting and storing cut pieces of bone or cartilage in an amount greater than the maximum bone or cartilage capable of being cut in a single full cut. The combined cutting element and storage member is truly disposable, rather than merely replaceable and requires the use of no tools or special assembly. The rongeur may be manually activated or activated by a solenoid and powered by a battery.

Abstract: A method for modifying tissue in a patient may involve one or more of the following steps: advancing at least a distal portion of at least one elongate, at least partially flexible tissue modification device into a patient and between one or more target tissues and one or more non-target tissues; positioning at least one tissue modifying member of the tissue modification device adjacent the target tissue such that the tissue modifying member(s) face the target tissue and do not face the non-target tissue; applying an anchoring force to the tissue modification device at or near the distal portion or a proximal portion of the device; applying a tensioning force to the tissue modification device at or near an opposite end of the device relative to the end to which anchoring force is applied, while maintaining the anchoring force, to urge the tissue modifying member(s) against the target tissue; and modifying the target tissue, using the tissue modifying member(s), while preventing the tissue modifying member(s)

Abstract: A surgical gouge for clearing bone and soft tissue from around a previously implanted rod during a surgical operation. The gouge includes an elongate handle with a distally positioned cutting member at one end. The cutting member has a rod capture arm with an arcuate surface generally conforming to the cylindrical shape of the rod. The cutting member further having a curved leading cutting blade extending over and about the rod capture arm. The curved leading cutting blade configured so as to create a trough between the inside surface of the curved leading cutting blade and the rod capture arm to capture any cut bone and/or soft tissue from around the rod as the gouge is rotated about the rod. The curved cutting blade having a distal end sharpened at its distal edge to enable the user to cut away bone and soft tissue from around the rod. It may also be desirable for the distal end to have sharpened side edges to assist in cutting away the bone and soft tissue that have built up about the rod.

Abstract: An actuating mechanism for use with a surgical instrument having a handle, an elongate body member, and a tool head. The actuating mechanism comprises a cable engagement arm pivotably attached at a first arm end. The cable engagement arm has a lever engagement portion at a second arm end. The actuating mechanism also comprises a cable engagement mechanism connecting a cable to the cable engagement arm and an actuation lever having a lever body. The actuating mechanism also comprises a torsion control mechanism having a piston slidably disposed within the piston chamber and a biasing mechanism configured for biasing the piston toward the chamber opening. The piston, the biasing mechanism, and the lever engagement portion cooperate to resist rotation of the actuation lever when a rotational force is applied to the actuation lever, but allow such rotation if the rotational force produces a moment that exceeds a predetermined limit.

Abstract: Improved method for removing large amount of bone and articulate surface including cartilage comprising a bone chipper, which can be adapted for usage with any large articular surface or bony structure through a small incision using minimally invasive surgical approach. The inventive device includes an oscillating chipper tip having a series of metallic blades with sharp cutting edges vertically situated and attached to a metallic circular platform. Said platform is situated at the distal end of shank blade. The circular platform and cutting blade will oscillate horizontally driven by the reciprocating eccentric cam with his attached proximally to a reciprocating central shaft. Each of the vertical blades has two sharp vertical cutting edges. The blade shank contains a suction channel, which allows of the removal of bone particles and tissue debris generated by the cutting process. The electromagnetic driver comprises three or four electromagnetic coils placed in a collinear fashion and in series.

Abstract: An intervertebral milling instrument for removing calcified fibrous cartilage (CFC) from adjacent vertebrae during spinal fusion or spacer implantation surgery. The milling instrument includes a grinding wheel carried within a guide housing sized to fit closely into the intervertebral space, and to expose the grinding wheel on opposite sides thereof for controlled removal of CFC layers from adjacent cortical end plates. The grinding wheel is rotatably driven as by attachment to a surgical drill, preferably to include saline supply to and suction removal from the grinding site. The controlled removal of CFC layers is limited to about 100 to about 250 microns, thereby avoiding exposing the cortical end plates without excessive bone removal. The instrument is conveniently provided in a kit having multiple guide housings and associated grinding wheels of different sizes to fit into different intervertebral spaces.

Abstract: A rongeur has a fixed shank and a moveable crossbar. The crossbar is connected to and axially aligned with the fixed shank. The crossbar has a distal end with a cutting portion located therein. A port is connected to one of the fixed shank and the moveable crossbar. An access channel is connected to the port and provides improved flushing, cleaning, sterilization, drying and/or lubricating capabilities.

Abstract: A spinal joint distraction system for treating a facet joint including articular surfaces having a contour is disclosed and may include a delivery device including a generally tubular structure adapted to engage a facet joint, an implant adapted to be delivered through the delivery device and into the facet joint, the implant comprising two members arranged in opposed position, and an implant distractor comprising a generally elongate member adapted to advance between the two members of the implant causing separation of the members and distraction of the facet joint, wherein the implant is adapted to conform to the shape of the implant distractor and/or the articular surfaces of the facet upon being delivered to the facet joint. Several embodiments of a system, several embodiments of an implant, and several methods are disclosed including a method for interbody fusion.

Abstract: The invention relates to a powered medical instrument having an adaptable deburring bit and independent nerve sensors that facilitate positioning of the instrument to a proximate surgery site. The medical instrument having a hand piece on a proximal end of a shaft and a hollow tip portion on a distal end of the shaft. The hand piece includes a handgrip and a squeezable trigger portion, whereby the trigger portion is independently compressible of the handgrip. The trigger portion controlling a rotatable surgical tool bit, which is housed in the tip portion and powered by a connecting drive system. The medical instrument further includes a safety apparatus provided on the grip portion, capable of locking the instrument and a monitoring system disposed on the tip portion, in order to identify proximity of nerve endings.

Abstract: A cutting device (11) comprises a cutting head (14) of substantially circular cross-section, the cutting head having a main axis (X), and a distal cutting edge (23). The cutting edge has a first cutter. The cutting head (14) has a cutting portion (21) and a second cutter extending inwardly of the cutting portion. The second cutter (26) comprises a plurality of spaced cutting members (32) arranged in an array around the main axis. Each cutting member has a substantially planar cutting surface (32A) extending substantially parallel to, and offset from, the main axis.

Abstract: A cutting instrument for use in the complete removal of the annulus fibrosus of an intervertebral disc contains a curvature in the shaft. The curvature forms a guide that rests upon an intervertebral disc and guides the cutting head around the circumference of the intervertebral disc. The curvature of the shaft of the instrument conforms to the circumference of the intervertebral disc and prevents vessels and extra spinal tissue surrounding the intervertebral disc from being damaged particularly when cutting the posterior portion of the intervertebral disc where visibility is minimal. The cutting instruments contain blunt blade guards further minimizing any potential damage to tissue surrounding the intervertebral disc.

Abstract: Aspects of the invention include minimally invasive tissue modification systems. Embodiments of the systems include a minimally invasive access device having a proximal end, a distal end and an internal passageway. Also part of the system is an elongated tissue modification device having a proximal end and a distal end. The tissue modification device is dimensioned to be slidably moved through the internal passageway of the access device. The tissue modification device includes a tissue modifier. Positioned among the distal ends of the devices are a visualization element and an illumination element. Also provided are methods of using the systems in tissue modification applications, as well as kits for practicing the methods of the invention.

Abstract: A rongeur having a fixed shank and a moveable crossbar is disclosed. The crossbar is connected to and axially aligned with the fixed shank. The crossbar has a distal end with a cutting portion located therein. A port is connected to one of the fixed shank and the moveable crossbar. An access channel is connected to the port for improved flushing, cleaning, sterilization, drying and lubricating capabilities in a rongeur.

Abstract: A miller assembly for creating a cavity in a bone. The cavity has a cross section which has a generally triangular profile having a first side generally parallel with an axis of the bone and a second side forming an acute angle with the first side, and is contiguous with a pre-existing conical cavity in the bone. The miller assembly includes a cutter and a frame for carrying the cutter. The frame includes a connection portion having a longitudinal axis and a cutter mount for mounting the cutter at a first angle approximating the acute angle with respect to the longitudinal axis of the connection portion. The cutter mount extends at the first angle from the longitudinal axis of the connection portion and is configured to receive a portion of the cutter and maintain the received cutter oriented at the first angle during rotation. The frame further includes a handle configured to form a portion of a drive joint for coupling the frame to a drill, the handle having a longitudinal axis.

Abstract: A surgical punching instrument is provided with a fixed handle (14) attached to a punching bar (2) and with an actuating lever (16), which is mounted thereon in a pivotingly movable manner and which is connected via a short lever arm (17) to a punching slide (1), which is in turn under the action of a restoring spring (23). The punching slide (1) lies with its flat sliding surface (3) on a flat guiding surface (4) of the punching bar (2) over its entire length and is guided at same in an axially movable manner by means of guide elements (5 through 8), which have a T-shaped profile, engage one another in a positive-locking manner and are detachable by longitudinal displacement.

Abstract: A spinal joint distraction system is disclosed and may include a delivery device, a driver assembly, and an internal actuator, where the driver assembly is adapted to be hold an implant and be sleevably inserted into the delivery device and the internal actuator is adapted to advance an implant distractor to distract the implant, the system also including an implant, a chisel, an injector, a gripping tool, and a dilator set. Several embodiments of an implant are disclosed as well a method of placing an implant.

Abstract: A surgical rongeur for cutting bone or tissue is provided. The rongeur has an elongated track member, and a generally hollow cutting slide defining an inner cavity slidably received within the track member. The distal end of the cutting slide terminates in a sharp cutting edge and an opening. The distal end of the track member terminates in a foot plate. The cutting slide is longitudinally movable relative to the track member from a first open position to a second closed position. In the first open position, there is an opening between the sharp cutting edge and the foot plate, in which opening the bone to be cut is placed. In the second closed position the sharp cutting edge contacts the foot plate, cuts the bone and pushes the bone chip through the opening into the inner cavity of the cutting slide, where multiple bone chips may be stored.

Abstract: A cutting guide assembly is provided for resecting a head of a bone. The cutting guide assembly includes an elongate support rod and at least one cutting plate couplable to the support rod, the at least one cutting surface defining a cutting surface arranged such that when coupled to the support rod, the bone can be cut to form a resection surface by aligning a cutting tool with the cutting surface. The support rod is configured to be partially disposed in and rotatable within a cavity extending into the head of the bone, defines a longitudinal axis and including a reference formation.

Abstract: A cutting tool to be utilized in the resection or removal of bone tissue from patients includes a handle that tensions a wire or cable-like cutting member with a small diameter between at least two features on the handle to present a thin cutting profile. The design of the cutting tool includes features that protect against soft tissue damage and minimize the incision size necessary to utilize the tool. Some embodiments feature details of the cutting tool that interface with a surgical cutting guide system. Other embodiments describe a cutting tool with a selectively changeable length of the cutting profile of the wire cutting member. In one embodiment, the wire cutting member of the cutting tool is energized by mechanical energy in the form of a unidirectional rotation of the cutting member, a mechanical vibration of the cutting member, or an oscillating movement of the wire cutting member.

Abstract: A rongeur (40) has a stem (b), comprising a manipulating end (A) and a working end, and at the manipulating end a grip (42, 44) that is angled in a direction away from the stem. Arranged at a second, working end is a mouth (50), which lies substantially on the side of the stem away from the grip, and a pivotable mouth part (52). The mouth part is mounted at its distal end on the stem in such a way that the opening of the mouth faces the working end of the stem; it is therefore a rongeur of which the working direction, that is to say the scraping and cutting direction of the mouth part when it closes, faces the surgeon. In this case, the stem has a curvature or angling that lies in particular close to the working end, but proximal in relation to the mouth, and which likewise has at least one component pointing away from the angling direction of the grip.

Abstract: Tools for use in the creation of cavities in bones. The tools include a probe, a cannula that provides percutaneous passageway to the interior of the treated bone, a bone tamp, and a system for delivering bone filler material into the cavity. The bone tamp has a shaft that is inserted into the bone through the cannula. The end of the shaft that is inserted into the bone may have a flapper tip that extends out of axial alignment with the shaft upon deployment by the physician. Once the tip is deployed, the bone tamp can be rotated to form the cavity. The cavity may then be treated with a medicament, filled with bone filler material, or both. Other tools and materials described herein may be used to lift or restore the treated bone closer to its natural anatomy.

Abstract: An instrument for retrograde cutting of sockets or tunnels in bone for arthroscopic tenodesis. A retrograde cutter is used to form a recipient site socket from the inside out, i.e., using a retrograde technique, with minimal incisions of distal cortices and reduced intraarticular bone fragmentation of tunnel rims. The retrograde cutter is provided with a cutting blade that is configured to engage the shaft of the instrument and to lock onto the shaft.

Abstract: Instrumentation systems that facilitate the reproducible deployment and placement of fixation device such as a screw, via an aligned, percutaneous access and approach, designed to relieve lower back pain and possibly improve disc health and prevent progression or transition of disease. Information about methods and equipment for accessing and preparing bone for subsequent delivery of a bone screw such as a facet screw across a facet joint. Some of the many teachings contained herein address a system of visual indicators may be used in connection with a bore cutter that operates around an anchored guide wire to avoid dislodging the anchored guide wire.

Abstract: To facilitate assistance of the operating surgeon when determining the disposition of a receiving cavity in the case of a method and a navigation system for creating a cavity to receive an acetabulum in a navigated pelvic bone with the aid of a navigated tool, it is proposed that the tear-drop point on the pelvic bone is located by means of a navigated scanning instrument, from the position data and the plane of the pelvic inlet of said pelvic bone there is determined a tear-drop plane, which lies perpendicular to said plane of the pelvic inlet and extends parallel to a line connecting the two anterior superior iliac spines and through the scanned tear-drop point, that a reference point is determined at a defined height above the tear-drop plane and in a defined position in the anterior-posterior direction and at a defined spacing from the outer surface of the pelvic bone in the lateral-medial direction, and that the tool is worked into the pelvic bone in a desired direction relative to the reference point un

Abstract: A bone-cutting apparatus and associated method and system. In one embodiment, the apparatus includes a guide removably attachable to a bone, and a rotatable mill coupled to the guide. The guide has a box-cut opening and the mill is pivotable within the opening. In one embodiment, the mill is laterally adjustable relative to the opening.

Abstract: A retrograde resection apparatus may include a cutting blade including a slot defined in the cutting blade, a recess defined in at least a portion of the slot, a screw, including a proximal end and a distal end defining a bore therethrough, a shaft having a distal end and a proximal end, wherein the shaft passes through the bore and the distal end is configured to be received in the recess, and a biasing device configured to bias the shaft against the cutting blade. In addition, the apparatus may include a tether, a first portion of which is affixed to the cutting blade and a second portion of which passes through the bore.

Abstract: A device for removable attachment to a bone of a living patient, useful as a mounting support for a trackable part of a computerized surgical navigation system and a method for attaching an object removably to a bone of a living patient. A shaft having a self drilling, self-tapping screw tip can be inserted transversely of the bone and securely screwed into the cortex. A screw drives a sharp-edged sleeve along the shaft to engage the near cortex. A stepping mechanism allows incremental angular movement of a portion of an adjustment mechanism and indicates when the sleeve is securely engaged by resisting further tightening.

Abstract: A novel and improved elbow prosthesis and method of implanting same including a novel aggregate prosthesis having a retaining system in conjunction with a set plate.

Abstract: A bone milling instrument is disclosed for creating a shaped cavity from an initial cavity in a bone, the bone milling instrument comprising a reference frame having a proximal end and a distal end, the reference frame defining a longitudinal axis between the proximal end and the distal end, a centering member provided at the distal end of the reference frame, the centering member configured for placement within the initial cavity so as to selectively maintain a relative positioning of the longitudinal axis of the reference frame and the bone with one another, a registration surface for engaging a portion of the initial cavity so as to establish a desired vertical position of the reference frame along the longitudinal axis, the registration surface located proximally of the centering member, and an attachment site provided proximally of the registration surface, a guidance support member having a first end and a second end, an attachment mechanism at the first end of the guidance support member for adjustable

Abstract: The invention relates to an instrument for making openings in bone in form of a bone lid. The object of invention is that several cutting pins are carried along a hypotrochoid and in this way the instrument by utilizing a rotating drive mechanism produces the opening and the bone lid in a shape resembling a equilateral polygon with rounded edges.

Abstract: A surgical delivery system that has particular application for providing bone graft material to an interbody device that restores disc space height during spinal fusion surgery. The bone graft delivery system includes a body portion and a shaft coupled thereto. An auger extends through a bore in the shaft and into the body portion. An end of the shaft opposite to the body portion is configured to be coupled to the interbody device, where the auger extends through a channel in the interbody device. Bone graft material is placed in a hopper coupled to the shaft, where the auger is manually or automatically rotated to deliver the bone graft material through the shaft and into the interbody device where it is dispersed into the disc space.

Abstract: An improved multi-bite bone cutting rongeur with an ultrathin foot plate and a disposable cutting element and storage chamber unit is disclosed. The present invention has an integrated cutting element and storage chamber unit that is truly disposable, rather than merely replaceable. The present invention requires the use of no tools or special assembly. The chamber is simply placed onto the shaft whereby it is immediately locked into place by the use of the instrument.

Abstract: An improved multi-bite bone cutting rongeur with an ultrathin foot plate and a disposable cutting element and storage chamber unit is disclosed. The present invention has an integrated cutting element and storage chamber unit that is truly disposable, rather than merely replaceable. The present invention requires the use of no tools or special assembly. The chamber is simply placed onto the shaft whereby it is immediately locked into place by the use of the instrument.

Abstract: A rongeur has a detachable crossbar to enhance cleaning and sterilization. A pin in a slot on one of the rongeur's handles is moveable out of the slot to permit extended retraction of the crossbar to a position in which it may disengage from the shank of the rongeur.

Abstract: The invention relates to a rongeur-type surgical instrument comprising a fixed handle (2) which receives an elastically-loaded movable handle (4) around an axis of rotation (5), a fixed clamping jaw (3), one end of which is solidly connected to a cutting jaw, (25) and a movable clamping jaw (6). The movable clamping jaw moves in translation on the fixed clamping jaw (3) when the movable handle (4) pivots around the axis of rotation (5) in such a way that the sharp edges (45) of the free end thereof co-operate with the sharp edges (27) of the fixed clamping jaw (3). Said movable clamping jaw (6) comprises an internal channel (44) which stores the fragments of cut bone tissue (56), while the fixed clamping jaw (3) comprises transfer means (30) which co-operate with the movable clamping jaw (6) in order to enable the fragments of cut bone tissue (56) to penetrate a space (41) in the movable clamping jaw (6) which is disposed in the extension of the channel (44).