1054 results about "Chisel" patented technology

Instruments of an instrumentation set may be used to prepare a disc space and to insert an implant into the prepared disc space. The instruments may include fixed tip distractors and / or modular tip distractors. The instruments may include a chisel. The chisel may allow simultaneous removal of a desired amount of bone from each of a pair of vertebrae. The instruments may include an implant inserter. The implant inserter may grip sides of an implant. A portion of the implant inserter may fit within grooves of the implant to minimize or eliminate portions of the implant that extend beyond side surfaces of the implant.

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.

Ultrasonic horns configured for use with a surgical ultrasonic handpiece including a resonator are described. The ultrasonic horns include an elongated member having a longitudinal internal channel extending partially therethrough. Disposed on the distal end of the elongated member is a chisel and awl shaped tip configured for cutting and / or abrading hard tissue, for example bone.

A power line de-icing apparatus that incorporates both thermal and mechanical means to remove various forms of accumulated ice or wet snow from power lines. The apparatus uses a minimum amount of energy to first de-bond and then break off ice from the power line; using far less power than required to fully melt ice. The apparatus operates autonomously, activating heating and chisel mechanisms, and moving between power line support towers in response to both temperature and ice sensor inputs. This operation is repeated in both directions along the power line as long as icing continues to activate the sensors; removing ice more quickly than it can accumulate and thereby preventing mechanical or electrical damage to the power lines and supporting towers. The apparatus is self contained and powered inductively from the power line. It is installed onto the power line without the need for disconnecting the power line.

A spinal joint distraction system is disclosed and may include a driver assembly with a tubular shaft, a pair of implant holder arms, an implant distractor, an internal actuator, and a distractor knob, the system also including a delivery device with a tubular shaft, a receiving assembly, and a pair of forks, where the delivery device is adapted for slidable insertion of the driver assembly, the system also including an implant, a chisel, and an injector. Several embodiments of an implant are disclosed as well a method of placing an implant.

This invention relates to methods and instruments for performing disc space preparation and implant insertion from a unilateral approach to the spine through a posterior lateral opening to the disc space. The instruments include spreaders, distractors, reamers, scrapers, cutters, chisels, pushers and implant inserters. A surgical procedure is provided that allows bilateral support of the adjacent vertebrae with at least one interbody fusion device inserted into the disc space via a unilateral approach. Implants for insertion into the disc space are also provided.

A vertebral endplate chisel having upper and lower shaving portions, and a non-cutting guide integrally connected to and extending between the shaving portions and adapted to center the chisel within the disc space so that equal amounts of bone are removed from each endplate by the shaving portions as the chisel moves through the disc space.

A tibial resurfacing system is provided that includes a drill guide, bone chisel and implant. In one aspect, the system includes a drill guide that includes a targeting ring that is shaped to be placed on the superior tibial surface and a bore section that is connected to the ring to create an axis through the tibia to the superior tibial surface in the vicinity of the targeting ring. The drill guide permits a drill pin and / or drill to be advanced through the tibia to the superior tibial surface. In another aspect, a bone chisel is provided that includes an elongated tubular structure having a first end and a bone-cutting end, and the bone-cutting end is terminated in a transverse angle thereby creating an elliptical bone-cutting face. In another aspect, an implant is provided that includes an angled bearing element formed of a cylindrical member having a first end and a second end. The first end is formed at an angle that creates an elliptical face of the first end, and the first end defines a load-bearing surface of an articular surface.

A chisel with distal cutting edges, used to form channels in adjacent vertebrae, includes a shank having a longitudinal axis and a cutting head coupled to the distal end of the shank. The cutting head includes distal cutting edges, which may be linear, arcuate, or V-shaped, and a guide member, which may be hollow or formed as two spaced members, to guide the chisel into the disc space to uniformly chisel both adjacent vertebrae simultaneously to partially form a channel in the vertebrae. The guide member and cutting head may have openings for distributing cut debris to the top and bottom surfaces of the head. The guide member may also include distal transverse, longitudinal side and / or vertical cutting edges, some of which may be in stepped relationship, for further cutting the endplates and removing disc material from between adjacent vertebrae, and for scraping of endplates. Other embodiments are disclosed.

A fixture for attaching a round shank chisel to a road milling machine or the like. The round shank chisel has a chisel head and a chisel shank. With a bearing surface the chisel head rests upon a wearing protection disk which in turn rests on and is supported by a chisel holder. The chisel shank is accommodated by a location bore of the chisel holder. This invention prevents dirt from penetrating the area of the location bore of such a fixture and at the same time ensures that the free movability of the round shank chisel is not impaired. Thus, the chisel holder has a circumferential projection or a circumferential depression which extends along the location bore. Also, the wearing protection disk has a circumferential receiving groove or a circumferential shoulder and the projection or the depression of the chisel holder engages with the receiving groove or the depression of the wearing protection disk when the round shank chisel is assembled.

A polyaxial instrument suitable for preparing the intervertebral disc space of a patient through an anterior, posterior, transforaminal or anterolateral approach. The trial can be partially inserted into a disc space and then its angle adjusted to ease its further insertion into the disc space. The trial work tip can be interchangeable with the working tip of another type of instrument such as a curette, a rasp, a spreader, a shaver, a cobb elevator, a penfield, a woodson, a chisel and an osteotome.

A tool for separating an acetabular shell of a hip prosthesis from the surrounding pelvic bone includes a fixture which attaches to the acetabular shell and has a chisel guide mounted on it. A chisel associated with the chisel guide is curved to conform to the outer periphery of the acetabular shell, and the chisel guide causes the chisel to circumscribe the acetabular shell as the chisel is inserted between the acetabular shell and the pelvis.

A cutting guide for use in spinal surgery includes a sidewall defining an internal cavity. A chisel guide, for use with the cutting guide, includes a first block member to be inserted into the internal cavity of the cutting guide to position the first block member adjacent the vertebral body. The chisel guide also includes a second block member connected to the first block member. An apparatus for creating a cavity in a-vertebral body endplate and in an intervertebral disc may be a compressor or a distractor having at least one cutting implement thereon. A tensioner determines a proper elongation distance in a prosthesis implanted in a vertebral body.

A road milling machine having a milling roller with a plurality of chisels. A signal receiving unit is assigned to a machine component which is directly or indirectly involved in the milling process or to another machine component. The signal receiving unit detects an operating condition of the machine component and is connected to a signal emitting unit. An optical detecting device may be assigned to the road milling machine, whereby operations are made easier and the milling pattern is optimized.

A surgical guiding instrument for use with a chisel and an implant body for insertion into an intervertebral space, included is a shaft with a stop device for delimiting a depth of insertion of the implant body into the intervertebral space. The shaft has a distal end and a proximal end, the implant body being arranged at the distal end of the shaft and defining two bearing surfaces positionable against the adjacent vertebral bodies, the stop device having at least one stop movably mounted at the distal end of the shaft or on the implant body, the stop having a stop surface pointing in distal direction transversely or substantially transversely to at least one of the bearing surfaces, so that an insertion depth for a surgical machining tool can be set in a simple way.

A chisel holder changing system having a base element with a chisel holder receiver, into which a chisel holder equipped with a chisel can be inserted, wherein the chisel holder is inserted with a holder shaft into the chisel holder receivers and is maintained therein with the aid of bracing screws. Bracing screws can be screwed into a threaded receiver of the base element and during this are supported under tension in a bracing receiver of the holder shaft of the chisel holder. If in a chisel holder changing system in accordance with this invention the surfaces of the outer screw thread of the bracing screw and / or of the inner screw thread of the threaded receivers of the chisel holder receivers have a metallic layer of zinc and aluminum lamellas and a mineral chromium oxide bonding agent, which is burned in after the application, the screw connections are improved so that larger prestressing forces / tightening torques can be transmitted without damage to the screw connections.

A chisel-holder changing system for a road milling machine, a coal cutting machine or the like to which a chisel-holder is fastened in an exchangeable manner by means of a connecting mechanism. The chisel-holder accommodates at least one chisel that can be exchanged. The middle longitudinal axis of the chisel is set at an operating angle of less than 90° with respect to the surface to be worked. In order to be able to obtain varied removal results using such a chisel-holder changing system, the chisel-holder can be fixed in two or more configuring positions to the base part and in different attachment positions of the chisel, the middle longitudinal axis of the chisel is slanted at various working angles.

A chisel holder for a road milling machine or the like, having a base element which supports a holding neck, wherein the holding neck has a chisel receiver and a protrusion is connected to the base element upstream of the holding neck when viewed in an advancing direction of the tool. For improving the cutting output, in particular in connection with rough-chipped milling materials, the base element has a connecting section designed as a chip breaker, which is formed on the base element and extends, starting at the holding neck, at least partially over the protrusion.

The invention discloses a grouting method of penetrability concrete cracks. The grouting method of the penetrability concrete cracks comprises the steps of drilling holes, burying pipes, sealing cracks and grouting. The drilled holes comprise inclined holes and roulettes. The inclined holes are preferably distributed in the same side or two sides of the cracks. The roulettes are distributed along the cracks to the bottom portions of the cracks. The pipes are buried by gelatinization materials. The cracks are sealed through the chisel groove method and the surface crack sealing method. With regard to stable and unexpanded penetrability concrete cracks (dead cracks) or compressive zone penetrability cracks, the grouting method of the penetrability concrete cracks adopts cement grout to conduct a grouting process, not only is the grouting method environment-friendly, economical and convenient to construct, but also quality effects meet engineering requirements. Besides, durability of materials is good, and strength of the materials is high.

A chisel holder for a road milling machine or the like, having a base element which supports a holding neck, wherein the holding neck has a chisel receiver and a protrusion is connected to the base element upstream of the holding neck when viewed in an advancing direction of the tool. For improving the cutting output, in particular in connection with rough-chipped milling materials, the base element has a connecting section designed as a chip breaker, which is formed on the base element and extends, starting at the holding neck, at least partially over the protrusion.

A kit for preparing an intervertebral disc space for receiving an implant (100) includes a plurality of trials (152) having different sizes. Each trial (152) includes a body (154) insertible into an intervertebral disc space, the body (154) having a leading end (162), a trailing end (164), a top surface (156) and a bottom surface (160), the top surface of the body having a first groove (176) formed therein. Each implant also includes a flange (166) secured to the trailing end (164) of the body (154), the flange (166) having a first channel (180) aligned with the first groove (176), wherein each of the different sized trials has a different flange thickness. The flange thickness controls advancement of a cutting tool such as a chisel (192) into the first groove at the top surface of the trial body, which controls the depth of the cut into vertebral bone.

This invention relates to a method for determining a wear state of a chisel, a chisel holder, and / or a chisel holder replacement system equipped with a chisel and chisel holder. For this method to give the user qualitative and quantitative information about the wear, according to one embodiment of this invention, a position of at least one point of the chisel and / or the chisel holder is determined by a contactless measurement method and a corresponding measurement result is compared in a switching unit to a reference value stored in a memory device.

A tool for a street milling, coal-cutting mining machine or the like which includes a chisel with a chisel head and a chisel stem. The chisel stem is rotatably mounted in a receiver of a chisel holder. A perforated wearing protection element is mounted on the chisel head. The chisel head sits closely on the chisel holder while embracing the interposed wearing protection element. This invention achieves improved wearing protection behavior of such a tool. Thus, the inventive wearing protection element has one or more spring elements that elastically support the chisel head by way of the chisel holder.

A surgical guiding instrument for use with a chisel and an implant body for insertion into an intervertebral space, included is a shaft with a stop device for delimiting a depth of insertion of the implant body into the intervertebral space. The shaft has a distal end and a proximal end, the implant body being arranged at the distal end of the shaft and defining two bearing surfaces positionable against the adjacent vertebral bodies, the stop device having at least one stop movably mounted at the distal end of the shaft or on the implant body, the stop having a stop surface pointing in distal direction transversely or substantially transversely to at least one of the bearing surfaces, so that an insertion depth for a surgical machining tool can be set in a simple way.

A chisel holder system including a base part and a chisel holder. The base part includes a socket wherein the chisel holder with a plug-in insert is introduced. The chisel holder has a bearing surface supported on a supporting surface of the base plate, and the base part has a shoulder connected to the supporting surface. A replacement chamber is formed between the shoulder and a facing end surface of the chisel holder. According to this invention, the supporting surface is placed in the transition region in relation to the shoulder by at least one recess of the shoulder so that the flat-shaped connection between the supporting surface and the shoulder, in the region of the recess, is interrupted in order to optimize the resistance to wear and tear of the base part.

A tool for removing a chisel, in particular from a chisel holder, having a base element which receives an actuating member, wherein the actuating member has an expeller mandrel. The actuating member is adjustable along a displacement direction. In order to be able to perform the removal simply and rapidly, the actuating member of this invention is indirectly or directly coupled to a piston of a fluid-charged cylinder, or to an electric motor unit.