48 results about "Posterior fixation" patented technology

A posterior fixation system for the human spine associated with fusion or corrective procedures in achieving proper alignment of the spine with regard to the patient's natural or corrective posture through optional postoperative re-adjustment. The fixation system may include a clamping block secured to a bone segment by pedicle screws or other anchoring device whereby a cross member passes through the multi-axial clamping block and is attached to a bone segment opposite the bridged section. The cross member is clamped and locked into position by engaging the set screw which is also accessible postoperatively by non-invasive means. The fixation of the bone segments promotes healing over an affected area while facilitating a proper alignment of the spine.

A stand-alone interbody fixation system having a cage, anterior fixation blade and posterior fixation blade. The cage includes an annular side wall with an open interior and upper and lower surfaces, the cage being configured to fit between end plates of adjacent vertebrae. The anterior fixation blade includes an anterior alignment boss with two opposing outward extending anterior blades with end plate penetrating tips configured to fit within the open interior of the cage. The posterior fixation blade includes a posterior alignment boss with two opposing outward extending posterior blades with end plate penetrating tips configured to fit within the open interior of the cage. The anterior and posterior fixation blades are counter-rotating blades and the anterior alignment boss and posterior alignment boss are configured to receive or engage a deployment instrument having an anterior engagement portion and a posterior engagement portion configured to rotate the anterior and posterior fixation blades from a stowed position to a deployed condition.

Embodiments of a surgical instrument disclosed herein can include mechanisms for reduction and distraction as well as compression. Some embodiments of the surgical instrument may comprise a reducer knob having a first passage through which a first shaft of a driver is acceptable, a connecting element coupled to the reducer knob and having a second passage through which the first shaft of the driver is acceptable, a compressor handle coupled to the connecting element at a first end and having a through hole, and a common handle coupled to the compressor handle via the through hole and pivots between the reducer knob and the compressor handle. With embodiments of a surgical instrument disclosed herein, surgical personnel can distract and hold vertebrae in a distracted state and perform a reduction without having to switch or add instruments. Some embodiments disclosed herein can be particularly useful for reducing spondylolisthesis during posterior fixation.

This application describes surgical instruments and implants for building a posterior fixation construct across one or more segments of the spinal column during a medialized posterior lumbar interbody fusion (PLIF) procedure.

A locking nail system for arthrodesis reconstruction of calcaneus fractures that is comprised of a nail (1), several calcaneus-talar screws (2), a guide (3), guide tubes, bit, depth gauge, cannulated screwdriver, diapason impactor, bit with limiter and reference guide-pin, the principal object of which is the reconstruction of severe comminuted fractures of the calcaneus in humans and fixation of this bone after reconstructing its principal form, to the talus, in order to attain arthrodesis or fusion with the latter.

A spinal fixation plate for posterior fixation, including a plate body having flattened flanges extending along sides of the plate body, the flanges being interconnected by a convex arcuate process. A method of fixing vertebrae, including the steps of disposing a spinal fixation plate upon dorsal surfaces of adjoining vertebrae, wherein flanges of the spinal fixation plate extend parallel to the spinal column and rest upon superior articular processes of the adjoining vertebrae, and anchoring the spinal fixation plate to the vertebrae with at least one fastener by disposing the fastener through at least one aperture of the spinal fixation plate into the vertebrae.

The invention discloses a low-profile bidirectional locking large-angle universal pedicle screw and relates to pedicle screws for spinal posterior approach surgery. The low-profile bidirectional locking large-angle universal pedicle screw for fixation and correction through pedicle nailing during spinal posterior fixation and correction surgery is provided. The pedicle screw comprises a screw cap and a screw body, wherein a U-shaped groove is formed in the side of a spherical screw head of the screw body; the screw body is hollow; a proximal thread is formed in the proximal end of the screw body; a distal thread is formed in the distal end of the screw body; the depth of the proximal thread is smaller than the depth of the distal thread; a through hole is formed in the distal thread; the distal thread is used for injecting bone cement; a pore is formed in the tail end of the screw body and is used for injecting the bone cement; a screw cap and screw body bidirectional locking device is arranged between the screw cap and the screw body; and a locking nut is arranged on the U-shaped groove and is used for locking the U-shaped groove and a connecting rod.

The invention belongs to manufacture method and use method of rat tracheal intubation equipment, and particularly relates to a manufacture method and use method of tracheal intubation equipment of a rat acute myocardial infarction model. A needle core and an inner guide wire of the needle core are respectively a guide needle and a loach guide wire (Terumo super-slippery M-shaped loach guide wire in Japan) used for coronary artery intervention; the soft end of the guide wire penetrates through the tail end of the guide needle and is exposed from the head end of the guide needle by 0.4cm; and the redundant guide wire at the tail end of the guide needle is cut off. An outer-layer hose is prepared from an infusion needle of disposable venous infusion apparatus (Shanghai Youyu Medical EquipmentCo., Ltd., 0.5x20 infusion apparatus), wherein the length of the outer-layer hose is shorter than the length of a catheter needle by 0.3 cm, and the root of the hose is cut obliquely by a movable flap which accounting for 1/3 of the circumference of the hose. After anaesthesia, a rat is fixed and is subjected to skin preparation, a rat tongue is clamped out with a small tweezer, the tongue tip ispulled by a left hand, and a tracheal intubation pipe is hold by a right hand. A hard catheter needle at the head end of the tracheal intubation needle core is arranged at the root part of the rat tongue, and a trachea opening of the rat is searched by fine adjustment of the self-made tracheal intubation pipe under direct vision. The guide wire at the head end of the tracheal intubation pipe is sent in instantly when the trachea opening is opened, then the guide wire at the head end is inserted into the trachea opening by about 1cm through rotation, and the catheter needle is pulled out, wherein if the rat can breathe uniformly and smoothly, intubation is successful.

The invention discloses an automatic bone drilling device. The device comprises a feeding mechanism (3), a rotating mechanism (2) installed on the feeding mechanism (3), and a Kirschner wire (1) installed on the rotating mechanism (2); and the rotating mechanism (2) has a hollow structure, the Kirschner wire (1) is fixed after being inserted into the rotating mechanism (2), and the insertion depthof the Kirschner wire (1) is adjustable. According to the device, the rotating mechanism is set as the hollow structure, so that the exposed length of the operation part of the Kirschner wire can beadjusted, and the device is simple and convenient to operate without being assembled and disassembled by bolts; and in addition, the feeding mechanism and the rotating mechanism of the device are improved in structure, the volume and mass are greatly reduced, and the device can realize fully automatic operation of spinal bone drilling.

The invention discloses a positioning device for skull drilling. The positioning device comprises a main mounting frame, front fixing rods and a rear fixing rod. During use, the main mounting frame isarranged above the head of a patient, and extends in the left-right direction of the patient; the main mounting frame is fixed to the head of the patient; the front fixing rods are movably connectedwith the main mounting frame; one end of each front fixing rod extends to the rear of the main mounting frame, and is used for positioning a drilling point, and the other end of each front fixing rodextends to the front of the head of the patient, is suspended in front of the head of the patient, and is used for being fixed to the head of the patient; one end of the rear fixing rod is movably connected with the main mounting frame, and the other end of the rear fixing rod extends to the rear of the head of the patient and is used for supporting the head of the patient from the rear portion; adrill bit fixing rod is movably connected onto the main mounting frame, and a drill bit can be effectively positioned by adjusting the position of the drill bit fixing rod; and the drill bit is arranged in the drill bit fixing rod, and drills the drilling position located by the front fixing rods, so that the accuracy of the drilling position can be guaranteed.

The present invention relates to a screw plate system for posterior fixation of the axis, including a spinous process screw, an isthmus screw and a spinous process plates. The spinous process plate comprising a head and first and second shoulders disposed on both sides of the head. The head matches the anatomy of the spinous process apex. The first shoulder is matched with the spinous process sideof the spinous process tip and the vertebral lamina, and the second shoulder is matched with the spinous process side of the other spinous process tip and the pushing plate. The head is provided witha first through hole for inserting the spinous process screw, and the first shoulder and the second shoulder are provided with a first through hole for inserting the isthmic screw. The spinous process steel plate can be stably fixed at the corresponding position of the spinous process of the axis, can completely avoid the spinous process screw from being inserted into the vertebral canal, minimizes the possibility of encroaching on the spinal cord, and furthermore can prevent the isthmus screw from encroaching on the vertebral artery.

A spinal fusion cage implant is disclosed, including a handles. A sleeve is fixedly connected to the bottom of the handle, an outer side of the sleeve and an end adjacent to the handle are provided with a graduation mark, two stopper grooves are symmetrically arranged on the outer side of the sleeve and close to the handle, and an end of the sleeve away from the handle is fixedly connected with afuser connecting head. The sleeve and handle are hollow structure, and a lifting lever is inserted into the handle. The lifting lever is pierced from one end of the handle and extends into the interior of the sleeve, a tail cap is fixedly connected to an end of that lifting rod close to the handle. The cannula is slidably connected with a posterior fixation seat on the outside, and two limiting blocks are symmetrically arranged inside the posterior fixation seat. The invention has simple and novel structure, strong practicability, simple and quick operation, and the novel spinal fusion cage implantation device does not need fluoroscopy to determine the implantation depth of the fusion cage when implantation, reduces radiation to the patient body, and is convenient to operate.

The invention relates to the technical field of medical instruments, and discloses a rehabilitation tool for medical orthopedic department cervical vertebra physical treatment. The tool comprises a rear fixing shell, a front fixing shell is movably connected to the front side of an inner cavity of the rear fixing shell, a through hole is formed in the front side face of the front fixing shell, and a rear lifting plate is movably connected to the top face of the rear fixing shell. The top face of the front fixing shell is movably connected with a front lifting plate. The rear lifting plate and the front lifting plate are pulled upwards, the bottoms of the rear fixing shell and the front fixing shell are attached to the shoulders, an air bag surrounds the jaw and the rear side of the head of a patient, and at the moment, fixing pins are rapidly inserted into connecting holes to fix the positions of the rear fixing shell, the front fixing shell, the rear lifting plate and the front lifting plate. The upward drawing heights of the rear lifting plate and the front lifting plate are different, so that the head of the patient can be finely adjusted in the front-back direction, the comfort of the patient is improved, and the practicability of the device is improved.

The invention discloses a traction bed suitable for compression fractures of thoracic vertebra and lumbar vertebra. The traction bed comprises a frame defined by a front side plate, a rear side plate, a left side plate and a right side plate, a plurality of transverse plates are arranged in the frame, the transverse plates are arranged between the left side plate and the right side plate in a front-back sliding mode, the sum of the widths of the transverse plates is smaller than the length of an inner cavity of the frame, a first winding shaft is rotatably arranged at the front end of the frame, a first rubber belt is arranged on the first winding shaft, a first gap is formed in the front side plate, the rear end of the first rubber belt penetrates through the first gap and then is fixed to the rear side plate, a second winding shaft and a third winding shaft are arranged on the lower side of the frame, and the second winding shaft can move up and down, can move front and back and can also rotate. A second rubber belt is arranged on the third winding shaft, one end of the second rubber belt is wound on the third winding shaft, and the other end of the second rubber belt is fixed on the second winding shaft. Due to the adoption of the technical scheme, the pain of a patient can be relieved when the traditional Chinese medicine is used.