661 results about "Screw fixation" patented technology

In a method of treating the spine of a patient, an access device is inserted into the patient with the access device in a first configuration having a first cross-sectional area at a distal portion thereof. The access device is actuated to a second configuration having an enlarged cross-sectional area at the distal portion thereof such that the distal portion extends across at least a portion of each of two adjacent vertebrae. A stabilization of the vertebrae is then achieved using either translaminar facet screw fixation or transfacet pedicle screw fixation.

The present disclosure is directed towards a biomechanical implant and anterior, lateral or posterior instrumentation construct. The construct may be of unitary or modular construction, whereby a single molded construction can form the entire assembly, in which case the through holes may be adapted to receive a metallic insert for screw fixation; or alternatively be of a modular construction wherein the anterior / lateral instrumentation and intervertebral spacer are designed for removable locking engagement, one with the other, for insertion by the surgeon as a unitary construct. A unique feature of the construct resides within the instrumentation construction, whereby a single opening formed therein permits two bone screws, or the like fastener device, to be positioned within both the superior and inferior vertebral bodies surrounding the spacer implant, or, for example in the case of a corpectomy or diskectomy with cage insertion, wherein two screws can be fixed within a single vertebral body through a single through hole, and wherein the bone screws are constructed and arranged to cooperate with the retention plate so as to provide locking engagement, one to the other, with the retention plate, upon final fixation thereof. Screw retention elements of alternative shape, based upon the choice of vertical or horizontal orientation, based upon an opened figure eight design, are provided for insertion in a groove formed in the borehole of the instrumentation plate which allows insertion of each fixation element but will prevent a loosened fixation element from falling out of the plate.

A capless multiaxial screw fixation assembly, including: a screw having a threaded portion and a screw head portion positioned at one end thereof; and, a retainer having a first end, a second end opposite the first end, and a bore for receiving the screw threaded portion so that the screw head portion is seated therein. At least one of the screw and the retainer is configured such that the retainer is able to pivot about the screw head portion in a non-symmetrical manner.

The present invention is directed generally to a biomedical system(s) and method(s). More specifically, some embodiments may include system(s) and method(s) used in medical treatment(s). Various embodiments may include medical system(s) and method(s) that may use an anchoring mechanism and screw (bolt, etc.) arrangement that increases the strength of attachment. Some embodiments may further include, for example, an anchoring mechanism that expands upon insertion of a screw (bolt, etc.) into an opening. Some embodiments may include, for example, a system(s) and method(s) for improvement of structural tissue (e.g., bone, cartilage) fixation and safety. Further, some embodiments may also include, for example, an anchoring mechanism and screw (bolt, etc.) system that may be utilized in orthopedic procedures. Still some embodiments may further include system(s) and method(s) providing improved screw fixation and enhanced stabilization in structural tissue or fracture repair. Various embodiments may include multiple anchor mechanisms and anchor mechanism holding means.

Endosteal fixation of a ligament graft with an interference fixation device installed in a retrograde manner in ACL reconstruction is disclosed. The interference fixation device may be a screw or a ribbed implant fitted with a length of reinforced suture or wire for pulling the interference fixation device through the tibial tunnel. The suture extends beyond the leading tip of the interference fixation device a sufficient length to allow the interference fixation device to be passed into the joint by pulling on the suture or wire exiting the tibial tunnel. A driver or an impaction device, such as a slap hammer, is employed to advance and insert the interference fixation device in a retrograde manner into the tibial tunnel. Accordingly, interference fixation of the graft near the tibial plateau is provided, thereby eliminating graft abrasion at the tibial plateau tunnel opening.

The present disclosure is directed towards a biomechanical implant and anterior, lateral or posterior instrumentation construct. The construct may be of unitary or modular construction, whereby a single molded construction can form the entire assembly, in which case the through holes may be adapted to receive a metallic insert for screw fixation; or alternatively be of a modular construction wherein the anterior / lateral instrumentation and intervertebral spacer are designed for removable locking engagement, one with the other, for insertion by the surgeon as a unitary construct. A unique feature of the construct resides within the instrumentation construction, whereby a single opening formed therein permits two bone screws, or the like fastener device, to be positioned within both the superior and inferior vertebral bodies surrounding the spacer implant, or, for example in the case of a corpectomy or diskectomy with cage insertion, wherein two screws can be fixed within a single vertebral body through a single through hole, and wherein the bone screws are constructed and arranged to cooperate with the retention plate so as to provide locking engagement, one to the other, with the retention plate, upon final fixation thereof. Screw retention elements of alternative shape, based upon the choice of vertical or horizontal orientation, based upon an opened figure eight design, are provided for insertion in a groove formed in the borehole of the instrumentation plate which allows insertion of each fixation element but will prevent a loosened fixation element from falling out of the plate.

A locking mechanism for locking a rod in a screw and rod fixation assembly includes a cap having a sidewall and a locking element extending from at least a portion of the sidewall. Locking mechanism cooperates with a receiver component for a spinal fixation rod to lock the rod in the receiver without requiring application of torque. A method of locking a spinal fixation member in a receiver of a screw fixation assembly includes the steps of placing the spinal fixation member into a channel of a receiver, axially advancing a locking cap into the receiver toward the spinal fixation member without application of any torque, and securing the locking cap in a locked position above the spinal fixation member without application of any torque.

The present invention is directed generally to a biomedical system(s) and method(s). More specifically, some embodiments may include system(s) and method(s) used in medical treatment(s). Various embodiments may include medical system(s) and method(s) that may use an anchoring mechanism and screw (bolt, etc.) arrangement that increases the strength of attachment. Some embodiments may further include, for example, an anchoring mechanism that expands upon insertion of a screw (bolt, etc.) into an opening. Some embodiments may include, for example, a system(s) and method(s) for improvement of structural tissue (e.g., bone, cartilage) fixation and safety. Further, some embodiments may also include, for example, an anchoring mechanism and screw (bolt, etc.) system that may be utilized in orthopedic procedures. Still some embodiments may further include system(s) and method(s) providing improved screw fixation and enhanced stabilization in structural tissue or fracture repair. Various embodiments may include multiple anchor mechanisms and anchor mechanism holding means.

An imaging apparatus includes an optical element forming an image of an object, a lens barrel retaining the optical element, an image pickup device section having an image pickup device and obtaining the image of the object, a mounting wall portion surrounding one end portion of the lens barrel at an object side, a lens-barrel side screw groove provided on an outer circumference surface of the lens barrel, and a screw fixation section provided on the mounting wall portion and screwing with the lens-barrel side screw groove to fix the lens barrel to the mounting wall portion while pressing the one end portion of the lens barrel to the mounting wall portion in a direction of a photographing optical axis.

A cervical intervertebral prosthesis includes two cover plates which are each configured to be connected to adjacent vertebral bodies. At least one of the two cover plates has a toothed portion which faces toward the vertebral body and whose teeth have a steep, ventrally directed flank and a less steep, dorsally directed flank. When the prosthesis is fitted with sufficient pressing between its adjacent vertebral bodies, the combination of the serrated toothed portion and the abutment surface is sufficient to hold the prosthesis securely in the desired position. In many cases this makes it possible to dispense with additional screw fixation. The flange carrying the abutment surface is in this case expediently shortened so that it can be accommodated in a recess of the bone so that the prosthesis does not protrude ventrally beyond the ventral alignment surface of the adjacent vertebral bodies.

An apparatus for supporting a bone includes a plate configured for positioning on a tension side of the bone. Two or more fasteners are configured to extend from an opposite side of the bone to the plate, and engage the plate after extending through the bone. The plate has an attachment mechanism operable to engage with the fasteners. In other aspects, a method of performing a surgical procedure includes positioning a plate on a tension side of a bone, and forming a hole from an opposite side of the bone to the plate. A fastener is inserted through the hole to the plate, and the plate is adjusted into position on the bone surface on the tension side of the bone. One or more additional holes are formed from the opposite side of the bone to the plate, and one or more additional fasteners are inserted.

The present invention relates to a nail and screw system (1) for improving the fixation of proximal fractures of the humerus, including at least a Numeral nail (10) to be inserted in a Numeral shaft (9) and comprising at least a proximal transversal hole (5) for the passage of a corresponding locking screw (3), the screw (3) having a screw head (4) and a screw body (31). Advantageously, the nail is cannulated and the transversal hole (5) comprises a couple of opposite holes (6′, 6″) on opposite wall of the cannulated nail (10); the hole (6) closer to the screw head (4) has an internal partially threaded portion (28) and the corresponding screw (3) has an outside thread diameter smaller than the diameter of said at least one transversal hole (27) that receives such a screw. The partially threaded portion (28) works as a portion of nut screw but doesn't interfere with the screw during the normal insertion. In case of a undesired movement or displacement of the screw (3) after its final fastening or in use, the internal threaded portion (28) solve the problem engaging the threaded portion of the screw (3) at least in a crest to crest fashion.

Provided is a supporting device that enables light emitting modules to be easily installed on a ceiling for lighting and is easy to modify the light emitting modules with a simple configuration. For that purpose, a supporting device of the present invention has a large recess groove portion having a width dimension smaller than a dimension of a short side of the light emitting modules and having a length dimension larger than a dimension of a long side of the light emitting modules and a screw fixation portion provided with a threaded hole for fastening on the ceiling. On left and right interior walls of the large recess groove portion, small recess groove portions, parallel to the large recess groove portion, having a cross sectional shape approximately equal to a cross sectional shape of a peripheral end portion of the long side of the light emitting modules are formed in an arrangement facing on the left and right respectively. An interval dimension between facing groove back side portions of the respective small recess groove portion is approximately identical to a dimension of the short side of the light emitting modules.

A screw fixation system serves to facilitate attachment of an orthopedic implant to a fractured bone to facilitate healing thereof. The screw fixation system includes the orthopedic implant, a bone screw, and a screw fixing element. The orthopedic implant includes an opening formed thereby. The screw fixing element has a body including an aperture extending between upper and lower surfaces thereof, and a channel adapted to receive a portion of the orthopedic implant adjacent the opening. When the portion of the orthopedic implant is received in the channel and the bone screw is inserted into the aperture, engagement of at least a portion of threads formed on a head of the bone screw and threads formed in the aperture expands the screw fixing element against the orthopedic implant to fix the bone screw and the orthopedic implant relative to one another.

A motorcycle foot peg is comprised of a shaft connected to a bracket via a pin and a cotter pin, a platform, an outer and inner latch, a spring, and a screw. A platform swivels on the shaft. The spring biases the outer latch to be held substantially perpendicular to the inner latch, and swivels on the shaft. When mounted to a motorcycle frame, the foot peg enables a motorcycle rider to fixedly engage their feet into the foot peg via fore and aft cleats on the bottom of their motorcycle boots. To release from the foot peg, the rider twists their boots past a certain angle. The platform pivots to expose either side of the platform and make proper contact between the bottom of the boot and the platform. Platform teeth give grip between the boot and the platform when rider is not engaged to the foot peg. A shaft leg prevents the foot peg from pivoting up and back relative to the motorcycle frame. A first cleat is mounted towards the front of a motorcycle boot and a second cleat rearward from the first. Screws secure cleats to the bottom of the motorcycle boot. Slots allow the cleat to be adjusted fore and aft. A rider clips into the forward cleat in order to absorb bumps in the terrain, and clips into the rearward cleat in order to operate the gear shift lever or operate the foot brake. For longer rides for comfort, it may be desirable to switch between being clipped into the forward and rearward cleats.

The present invention discloses an inorganic bone adhesive and its use in human hard tissue repairs. The inorganic bone adhesive comprises basic compound, phosphate, calcium phosphate bone cement and retarder with the characteristics of rapid hydration rate and high early strength. Inorganic Bone adhesive can be widely used in the artificial joints fixation, screw fixation as well as comminuted fracture fixation. It is a kind of safe and effective adhesive material and beneficial for the fast postoperative recovery. The final hydration reaction products contains the composition of magnesium phosphate, bio-mineral containing ammonium and apatite-like materials, which has excellent biocompatibility and can be gradually absorbed by surrounding tissues after being implanted in vivo, which benefits the in-growth of the new bone.

A capless multiaxial screw fixation assembly, including: a screw having a threaded portion and a screw head portion positioned at one end thereof; and, a retainer having a first end, a second end opposite the first end, and a bore for receiving the screw threaded portion so that the screw head portion is seated therein. At least one of the screw and the retainer is configured such that the retainer is able to pivot about the screw head portion in a non-symmetrical manner.

An upper left protruding section 63a, an upper right protruding section 63b, a lower left protruding section 64a, and a lower right protruding section 64b are provided at vertically extending bridge frames 60, and an upper left screw-fixation section 65a, an upper right screw-fixation section 65b, a lower left screw-fixation section 66a, and a lower right screw-fixation section 66b are formed by causing the respective protruding sections to be bent, so that it is possible to cause the vertically extending bridge frames 60 to be screw-fastened directly to a back face of a PDP module 30. Accordingly, it is possible to reduce the number of parts, save the labor of assembling work, reduce the mounting defects, and cut costs.

A transfacet-pedicle locking screw fixation assembly includes a plurality of pedicle screws each including threads at a distal end and a connecting receptacle at a proximal end. The connecting receptacle is oriented perpendicularly with respect to a longitudinal axis of the pedicle screw. A basic transfacet locking screw including threads at least at a distal end has the distal end engaging the connecting receptacle in one of the pedicle screws. The transfacet locking screw may also be interlocked with another transfacet locking screw.

A screw assembly and a spinal implant. The screw assembly includes a screw with a head and a shaft where a screw retention member is positioned beneath the head of the screw and substantially surrounds the shaft of the screw. The screw retention member is formed from a temperature-sensitive material. The screw retention member has a first contracted position adapted for inserting the screw through at least one hole in the spinal implant and a second expanded position adapted for retaining the screw within the at least one hole in the spinal implant. The screw retention member may be in the form of a coiled spring or a collar having a plurality of tabs.

A locking mechanism for locking a rod in a screw and rod fixation assembly includes a cap having a sidewall and a locking element extending from at least a portion of the sidewall. Locking mechanism cooperates with a receiver component for a spinal fixation rod to lock the rod in the receiver without requiring application of torque. A method of locking a spinal fixation member in a receiver of a screw fixation assembly includes the steps of placing the spinal fixation member into a channel of a receiver, axially advancing a locking cap into the receiver toward the spinal fixation member without application of any torque, and securing the locking cap in a locked position above the spinal fixation member without application of any torque.

A clip for retaining a screw on a tip of a screwdriver shaft. The clip comprises a housing that has a first end and a second end and a longitudinal axis extending therebetween. The housing includes a longitudinal bore that is accessible from both the first and second ends of the housing. A pair of jaw members is provided on the housing proximate the first end thereof. The jaw members surround a first portion of the bore and are configured to capture and retain a length of the screwdriver shaft therebetween. A pair of clamping members is formed on the housing proximate the second end thereof. The clamping members surround a second portion of the bore and are configured to capture a head of the surgical screw therebetween. During use, the screwdriver shaft is pushed downwardly and twisted slightly within the bore to engage the head of the screw. The screw is threadably engaged in a pre-drilled hole in the patient's bone. When the screw is sufficiently engaged to prevent it from accidently being dislodged, the clip is disengaged from the screw. The retaining clip prevents the screw from accidentally dropping off the screwdriver and allows the surgeon to use a single hand to install the screw.

The present invention relates to a device and method for making dental records, particularly bite registrations for confirming the location, size, height and / or orientation of dental implants. More specifically, the present invention relates to a device and method for making a bite record for restoring teeth using internally configured dental implants. The device may comprise a sterile, plastic, press-fit component, made in varying lengths and in appropriate diameters to work with varying implant platform dimensions. The device may be a single piece component that does not require screw retention.

An electrical connector includes a housing having a contact loading end and a locking member rotatably mounted in the housing and substantially enclosed within the connector. The locking member has a circumferential edge portion that is exposed through a window of the connector to permit finger rotation of the locking member. A backshell at least partially encloses the housing. The backshell includes a chamber between the contact loading end of the housing and a back wall of the backshell. The backshell includes side walls that have windows opening to the chamber to provide access to the edge portion of the locking member.

A clip for retaining a screw on a tip of a screwdriver shaft. The clip comprises a housing that has a first end and a second end and a longitudinal axis extending therebetween. The housing includes a longitudinal bore that is accessible from both the first and second ends of the housing. A pair of jaw members is provided on the housing proximate the first end thereof. The jaw members surround a first portion of the bore and are configured to capture and retain a length of the screwdriver shaft therebetween. A pair of clamping members is formed on the housing proximate the second end thereof. The clamping members surround a second portion of the bore and are configured to capture a head of the surgical screw therebetween. During use, the screwdriver shaft is pushed downwardly and twisted slightly within the bore to engage the head of the screw. The screw is threadably engaged in a pre-drilled hole in the patient's bone. When the screw is sufficiently engaged to prevent it from accidently being dislodged, the clip is disengaged from the screw. The retaining clip prevents the screw from accidentally dropping off the screwdriver and allows the surgeon to use a single hand to install the screw.

The invention discloses a pneumatic artificial muscle static state characteristic comprehensive testing device and a driving system. A support is fixed on one end of a pedestal; two guide rails are arranged on the two sides of the pedestal along the length direction through two guide rail seats which are fixedly installed; the two guide rails are connected to an air cylinder connection plate provided with an air cylinder through a sliding block; a screw rod is arranged on the support rack between the two guide rails through a screw rod support side assembly which is installed in proximity to one end of the support rack and a screw rod support seat assembly which is arranged away from one end of the support rack; one end of the screw rod is connected to a hand wheel; the driving end of the air cylinder is connected to one end of a tension sensor; the other end of the tension sensor is connected to an air non-taken terminal of a pneumatic artificial muscle to be detected through a connection plate; the air non-taken terminal of the pneumatic artificial muscle is fixed on the support rack; the support rack is connected to one end of a displacement sensor through a connection rod; and the other end of the displacement sensor is fixed on the connection plate through a bolt. The invention can realize the comprehensive test of the static state characteristic of the pneumatic artificial muscle.

Disclosed are devices, systems, methods and surgical techniques for the retention of bone screws used in surgical applications. Various aspects of the invention include features to retain bone screws that are placed in an elongated plate and into a bony member to create a rigid construct and stabilize the member for the purpose of fusion. When the screws are placed through the plate, the retention systems can be engaged to prevent the screws from backing out.