Abstract: A post-bone-grafting expandable cage includes a main body, a blade assembly fitted to the main body, and a pushing assembly fitted to the blade assembly, wherein an end cover is interference-fitted on one end face of the main body. The main body comprising a screw section, a side section integrally connected to two ends of the screw section respectively, and an opening section integrally connected to the side section. The pushing assembly includes a first U-shaped base and a threaded rod fixedly connected to the first U-shaped base. The threaded section of the threaded rod extends out of an end face of the first U-shaped base, a square cylindrical section of the threaded rod penetrates the first U-shaped base. The threaded section of the threaded rod is threadedly matched with the threaded through-hole, and the first U-shaped base is provided in a fitting manner with the blade assembly.

Abstract: Disclosed herein are strut attachments for external fixation frames. The strut attachments provide solutions for frame configurations in which it is not possible to attach a strut at its ends to corresponding rings. The strut attachments may be considered an outrigger type of mechanism that achieves more travel out of completely collapsed struts. The strut attachments, each having a pivot and a hinge joint, allow a strut to be attached on the level of a first ring and extend at least partially proximally or distally to a second ring depending on the frame of reference of the ring system. These strut attachments may be used when the fully collapsed length of the strut will not allow the rings to get any closer to one another than is needed or proscribed. In such cases, the strut attachments allow for even tighter ring to ring distance.

Abstract: An adjustable length strut for use in an external fixation system may include an outer tube, an inner tube within the outer tube, and a first adjustment knob. A plurality of texturized surfaces may extend in the length direction of the inner tube, each of the plurality of texturized surfaces of the inner tube being spaced apart from each other in the circumferential direction of the inner tube. Each circumferentially adjacent pair of texturized surfaces of the inner tube is separated by a non-texturized surface. The first adjustment knob may also include texturized surfaces separated by non-texturized surfaces, and may be rotatable relative to the outer tube and the inner tube between a locked condition and an unlocked condition. In the locked condition, the texturized surfaces engage each other, to prevent translation of the inner tube relative to the outer tube.

Abstract: There is disclosed a treatment of spinal trauma with a novel polymer solution.

Abstract: The pupil expander is used to expand a pupil in ophthalmic surgery and includes a ring portion forming a ring and an iris hooking portion provided to the ring portion. The ring portion includes a first ring portion formed in a shape curved radially inward and a second ring portion formed in a shape curved radially outward, the first ring portion and the second ring portion being arranged alternately along a circumferential direction of the ring portion. The first ring portion is provided with the iris hooking portion. The iris hooking portion is configured to be hooked on a pupillary margin of an iris in a manner such that the first ring portion and the second ring portion are arranged on a front surface side of the iris.

Abstract: A retractor is provided that can form a joint cavity internal space for a field of view for an endoscope and practice of a treatment in a state where a wound area is spread. A retractor includes first arm portions 2 and 3 and a second arm portion 4 positioned between the first arm portions 2 and 3. The first arm portions 2 and 3 include first claw portions 12 and 13 to be hung on a wound area entrance edge. The second arm portion 4 includes a second claw portion 14 to be hung on the wound area entrance edge. When the first arm portions 2 and 3 and the second arm portion 4 are in a closed state, the first claw portions 12 and 13 and the second claw portion 14 overlap with each other.

Abstract: Surgical support instruments are described herein that can couple to, e.g., an implanted anchor and provide a platform for coupling other surgical implements thereto. In one embodiment, an instrument can include an elongate body having opposed projections extending laterally from a distal portion thereof that can at least partially surround a shank of an implantable anchor such that a longitudinal axis of the elongate body is laterally offset from a longitudinal axis of the anchor. The instrument can further include a lock configured to exert a drag force on a head of the anchor to control polyaxial movement of the instrument relative to the anchor. Further, a proximal portion of the elongate body can be configured to receive a retractor assembly including a plurality of tissue manipulating implements and selectively lock the retractor assembly at any of a plurality of positions along a length of the elongate body.

Abstract: A portable, foldable and handheld multipurpose medical instrument for use in a telemedicine application is disclosed. The medical instrument includes a first housing and a second housing placed over the first housing. The second housing includes a disposable examining tip having an image capturing unit, a temperature sensor and a light source. The medical instrument includes a plurality of buttons for operating the image capturing unit, the temperature sensor and the light source. The medical instrument includes a plurality of display screens for displaying the images, or recorded video and displaying the temperature readings during the examination of ears, eyes, nasal cavity and mouth and detection of body's temperature. In one implementation, the medical instrument transmits the data remotely to a server or a user device.

Abstract: A femur fixation system includes an intramedullary nail that includes a first bending stiffness and a bone plate that includes a second bending stiffness and a second torsional stiffness. In the femur fixation system either at least one of the second torsional stiffness compensates for the first torsional stiffness and the first torsional stiffness is insufficient to enable the intramedullary nail to stabilize the bone fracture independently of the bone plate or the first bending stiffness compensates for the second bending stiffness and the second bending stiffness is insufficient to enable the bone plate to stabilize the bone fracture independently of the intramedullary nail.

Abstract: The present disclosure discloses a minimally invasive fracture reduction and fixation system, including a retractable fixing bracket, a reduction device and a fixing device, wherein the retractable fixing bracket includes a connecting member, and a first fixing member and a second fixing member, the reduction device includes at least two reduction regulators, internal fixing needles and limit sleeves, each reduction regulator includes an outer sleeve and an inner sleeve, the inner sleeve has a center hole matching the internal fixing needle at its center, and the fixing device includes at least two external fixing needles. The present disclosure can realize longitudinal displacement and transverse displacement of the first bone segment and the second bone segment of the fracture with reference to the anteroposterior direction, and can realize minimally invasive reduction of the first bone segment and the second bone segment of the fracture.

Abstract: An orthopedic trialing instrument may include a shaft extending from a first end to a second end, a handle coupled to the shaft, and a first interbody trial disposed on the first end. In various embodiments, the first interbody trial may include a first bone screw indicator configured to visually represent a corresponding bone screw trajectory. In some embodiments, a double-sided orthopedic trialing instrument may include a first interbody trial on a first end and a second interbody trial on a second end. In various embodiments, each of the first interbody trial and second interbody trial may have at least one bone screw protrusion configured to visually represent a corresponding bone screw trajectory. In some embodiments, a plurality of orthopedic trialing instruments having differently sized interbody trials may be provided as a kit.

Abstract: Biplanar forceps reducer instruments and methods are disclosed herein. The instruments disclosed herein can engage an implant, such as a bone anchor receiver head, and reduce or move a spinal fixation element, such as a rod, in two planes to move the rod into a channel formed in the receiver head. Further, the biplanar forceps reducer instruments disclosed herein can allow for introduction and tightening of a set screw using an inserter that can pass through a cannulated tube of the reducer. The low profile and biplanar reduction functionality can allow a single type of reducer instrument to couple with each bone anchor along a spinal fixation construct and remain in position until the construct is secured in position.

Abstract: An external distractor to gradually enlarge the distance between first and second bone parts includes first and a second connection devices. The first and second connection devices are connected to the first and second bone parts, respectively, with first and second respective bone pins. The distractor includes an adjustment device between the connection devices for adjusting the distance between the connection devices along an adjustment axis. The adjustment device includes a tubular base body coupled to the first connection device, an extension tube coupled to the second connection device and an adjustment mechanism for moving the extension tube with respect to the base body along the adjustment axis. The adjustment mechanism includes a rotatable adjustment ring for moving the extension tube upon rotation of the adjustment ring around the adjustment axis. The adjustment mechanism includes a spring engaging the adjustment ring for preventing unintended activation of the adjustment mechanism.

Abstract: The present disclosure provides a device to restrict interspinous motion across multiple segments of a spinal column in a patient, comprising at least a first ligamentous line attached to a spinous process, a soft tissue in proximity to posterior aspects of a spinal vertebrae, or a pre-existing spinal fixation device or system.

Abstract: An osteosynthesis device for the fixation of bone components and bone fragments is disclosed including a bone anchor having a shaft which extends along a central axis and thereby defines a distal and a proximal direction, and includes at least one blade area with a first and a second wing, and proximally adjoins a neck area and further has a head with at least one spherical segment, and the bone anchor has a central and continuous cannula opening with a diameter. The blade area at least one window with an opening width is provided. The window interacts with the cannula opening, and the head area has an opening with an opening diameter, which also interacts with the cannula opening. The diameter of the cannula opening is smaller than the opening width of the window and the diameter of the cannula opening is also smaller than the opening diameter at the head and the shaft is formed in one piece with the blade area, the neck area and the head with spherical segment.

Abstract: A femoral nail includes a proximal section, a distal section remote from the proximal section, and an intermediate section disposed between the proximal section and distal section and having first and second curved portions. The first curved portion is positioned closer to the proximal section than the second curved portion. The second curved portion is curved in a first plane, and the first curved portion is curved in the first plane and a second and third plane.

Abstract: A retractor assembly that includes a base portion in slidable engagement with two or more retractor arms with at least one of the retractor arms releasably securing a retractor blade configured to be anchored to a bone anchor. The retractor blade includes an elongate blade portion with a retractor engagement portion positioned at the proximal end of the elongate blade portion and an anchor mechanism positioned at the distal end of the elongate blade portion. The anchor mechanism includes a first jaw and second jaw configured to engage the bone implant. When closed around or anchored to the bone implant—which may be a shank of a modular screw system—the components of the modular screw are able to be assembled to the shank without adjusting, loosening, or opening the anchor mechanism.

Abstract: A system includes a first pedicle screw, a second pedicle screw, and an adjustable rod having an outer housing coupled to one of the first pedicle screw and the second pedicle screw, the outer housing having a threaded shaft secured to one end thereof extending along an interior portion thereof. The system farther includes a hollow magnetic assembly disposed within the outer housing and having a magnetic element disposed therein, the hollow magnetic assembly having an internal threaded surface engaged with the threaded shaft, the magnetic assembly being coupled to the other of the first pedicle screw and the second pedicle screw, wherein the hollow magnetic assembly rotates in response to an externally applied magnetic field to thereby lengthen or shorten the distance between the first pedicle screw and the second pedicle screw.

Abstract: An intervertebral prosthesis for insertion between adjacent vertebrae includes an upper plate, a lower plate and a core. The core is retained between the upper and lower plates by a retention feature in the form of central projections on the plates and a corresponding opening in the core. The retention feature is designed to allow the plates to slide over the upper and lower surfaces of the core in the anterior/posterior direction and in the lateral direction and to allow the plates to rotate with respect to each other and the core. The retention feature is also designed to prevent contact between the first and second plates during sliding movement of the plates over the core. Each central projection has a diameter that is smaller than a smallest diameter of a central opening of the core.

Abstract: A tissue retractor having a spring loaded retractor blade that provides constant downward pressure on the spine to eliminate/reduce tissue from creeping underneath the tips of the blades during use, which decreases operation time and reduces patient risk.