33results about How to "Notch low" patented technology

The invention relates to a locking device of an anterior cervical vertebra steel plate, comprising at least one screw and a drop preventing device, wherein the screw is assembled in at least one screw hole arranged in the anterior cervical vertebra steel plate; the position of the anterior cervical vertebra steel plate, which is close to the screw hole, is provided with an assembly groove; and the drop preventing device is arranged in the assembly groove and comprises a first part and a second part which cooperatively move, wherein the first part can push the second part to reciprocate along the assembly groove so that a part of the second part is positioned above the top surface of the screw to prevent the screw from exiting, or move away from the top of the screw so that the screw is conveniently assembled. The locking device has a lower notch on an integral structure and adopts a rotating propelling/exiting mode on operation, thereby not only providing safe and reliable locking for the screw, but also is convenient for operation and reduces the operation difficulty.

The invention relates to a novel anterior cervical spine fixing plate. The novel anterior cervical spine fixing plate comprises a bone setting plate and screws, wherein a plurality of universal locking holes and bone grafting windows are formed in the bone setting plate; arc-shaped decompressing grooves are formed in the bottom of the bone setting plate; each universal locking hole is a threaded hole formed by multi-piece splicing; each screw can be transplanted and locked deviating from an axis center within the range of 0-15 degrees; and a first thread structure, a second thread structure and a tapping auxiliary structure are arranged on each screw. The novel anterior cervical spine fixing plate disclosed by the invention has the advantages that universal transplanting and locking of thescrews can be performed; the structure is simple, additional screw withdrawing preventing device and screw withdrawing preventing operations are not needed, so that surgery time is saved, and the surgery efficiency is improved; and the incisure is low, so that postoperative complications are reduced, and the surgery prognosis life quality of a patient is improved.

The invention discloses a novel pedicle screw. Traditional fixed-fusion common single-axis and multi-axis screws in the orthopedic surgery operation are technically transformed on the basis of external springs, so that the screws are applied to the non-fusion operation, and the original simple, practical and low-incisure advantages can be maintained.

The invention provides an occipital bone plate system. The occipital bone plate system comprises an occipital bone plate, connecting rod assemblies and ball head cups, wherein each connecting rod assembly comprises a first connecting rod; a ball head is arranged at one end of each first connecting rod; each ball head cup has a notch and an accommodating cavity which is arranged in the axial direction of the corresponding ball head cup; each notch is formed in the radial direction of the corresponding ball head cup, and communicates with the corresponding accommodating cavity; each accommodating cavity and the corresponding notch are opened facing the axial end of the corresponding ball head cup; the inner dimension of each accommodating cavity in the radial direction is adapted to the outer diameter of the corresponding ball head; each ball head is detachably arranged in the corresponding accommodating cavity; the width of each notch is not less than the radial outer dimension of the corresponding location of the corresponding first connecting rod; each ball head cup is detachably arranged on the occipital bone plate and can rotate around the axis of the corresponding accommodatingcavity; and each first connecting rod is configured to rotate in the corresponding accommodating cavity through the corresponding ball head, and rotates surrounding the axis of the corresponding accommodating cavity through the corresponding ball head cup. The angle of each first connecting rod relative to the occipital bone plate is adjusted, so that the incisure of the occipital bone plate system can be reduced, the foreign body sensation of a patient after a surgery is reduced, the transplanting is convenient, and the surgery efficiency is improved.

The invention discloses a component-based thoracolumbar anterior internal fixation system, and relates to the technical field of medical apparatus and instruments. The problem that common implants arehigh in price, and products have the defects that the products are monotonous, the process is rough, and most products adopt stainless steel materials are solved. According to the technical scheme, the system is characterized by comprising mounting pads, fasteners screwed into a vertebral body, a connecting component and locking blocks; mounting grooves are formed in the mounting pads, the two sides of the connecting component are installed in the mounting grooves through matching; a main mounting column is arranged on each mounting pad; the fasteners penetrate through the connecting component and then are in threaded connection with the interiors of the main mounting columns; the locking blocks are in threaded connection with the outer walls of the main mounting columns and abut againstthe side face of the connecting component; the purpose of being easy and convenient to operation in surgery is achieved, notches of an internal fixation device are effectively reduced, the risk that high notch implants affect other organs or tissue on the front edge of the vertebral body is reduced,the overall applicability is high, the application range of the product is greatly increased, and the purpose of having the high economical practicability is achieved.

The invention discloses a self-locking integrated anterior cervical board, and belongs to the technical field of medical apparatuses. The self-locking integrated anterior cervical board comprises an anterior cervical board body, a clasp and a universal screw. The anterior cervical board body is provided with a locking hole, the hole wall of the locking hole is a spherical surface provided with first sawteeth. The clasp has an opening, the outer wall of the clasp is a second spherical surface provided with sawteeth, the clasp is mounted in the locking hole via elastic deformation, and the first spherical surface and the second spherical surface are mutually embedded via the first sawteeth and the second sawteeth. The inner wall of the clasp is provided with a fist thread. The side wall of the head of the universal screw is a conical surface, the side wall of the head is provided with a second thread matching the first thread, the head of the universal screw is screwed into the clasp through cooperation of the first thread and the second thread. The self-locking integrated anterior cervical board is good in integration, the anterior cervical board will not loosen and fall off, the anterior cervical board can be locked twice through retreating a nail. The self-locking integrated anterior cervical board is easy to operate and safe in operation, and by adopting the self-locking integrated anterior cervical board, an operation is short in time, stimulation to esophagus and foreign body sensation can be reduced after the operation.

The invention relates to an ulna olecranon morphological anatomy locking method and a steel plate structure. The ulna olecranon morphological anatomy locking method comprises the following steps: cutting an ulna body and skin corresponding to olecranon; stripping muscle fascia covering the surfaces of the ulna body and the olecranon and exposing a fracture end and a fracture block; cleaning bloodclots at the fracture end, resetting the fracture block and temporarily fixing the fracture block; observing the reduction condition of the fracture block, placing a locking steel plate II at rear ends of the ulna body and the olecranon, and placing a locking steel plate I at front ends of the ulna body and the olecranon; washing the wound, and confirming the reduction and fixation conditions of the fracture block again; suturing the wound after reduction and fixation of the fracture block meet the requirements. By means of the method, the fracture block can be well fixed, and the arrangementdirection of locking nails and/or leather nails does not point to the concave joint surface and do not enter the joint, so that good safety is achieved.

The invention relates to the field of orthopedic surgery medical instruments, in particular to an embedded anterior cervical compression fusion fixing device. The device comprises fixing screws and avertebral bone plate; the vertebral bone plate is provided with at least one convex angle at two axial ends which are consistent with the axial direction of the vertebral column, and the back surfaceof the convex angle of the vertebral bone plate is provided with a convex structure which can be embedded into the vertebral body; the convex angle is provided with a round-like screw hole, and the inner surface of the screw hole is provided with an internal thread; the curvature of the top end of the round-like screw hole is larger than that of the low end of the round-like screw hole; one end, opposite to the cervical vertebra skeleton, of the screw hole is provided with a screw hole inclined plane which inclines inwards; and the fixing screws fix the vertebral bone plate on the cervical vertebra skeleton through the screw holes. The device can reduce vertebral bone plate incisura, realize intervertebral compression, increase the stability of the vertebral bone plate and effectively improve the intervertebral fusion rate.

The invention belongs to the technical field of medical instruments, and particularly discloses a thoracolumbar spine side adjustable fixing plate system. The system comprises a locking plate, a sliding plate, a vertebral screw and a locking screw, and the locking plate and the sliding plate are both arc plates; a fixing hole is formed at the inner end of the locking plate, and a screw hole for implanting the vertebral screw is formed at the outer end of the locking plate; a strip-shaped hole is formed at the inner end of the sliding plate, and a screw hole is formed at the outer end; and thelocking plate and the sliding plate are connected through the locking screw, and the vertebral screw is implanted in the position, close to an end plate, of the vertebral body of the patient through the screw hole. Due to the fact that the length is adjustable, it can be guaranteed that the vertebral screw is selectively implanted into the bone close to the end plate, the end plate is prevented from being damaged, the screw holding force is high, and the screw is suitable for normal or osteoporosis patients to reconstruct thoracolumbar stability; and the transverse radian of the locking plateand the transverse radian of the sliding plate correspond to the radian of the side wall of the vertebral body, the locking plate and the sliding plate can be better attached to the curved surface onthe side of the vertebral body, meanwhile, an intervertebral implant or a bone grafting material is wrapped, and the effect of preventing displacement and disengagement is achieved.

The invention relates to a self-locking fixed part for a surgical implant. The self-locking fixed part comprises a steel plate and a self-locking screw, wherein the self-locking screw consists of a screw rod and a screw cap, a ring-shaped groove with the end surface being similar to the V shape is arranged on the screw cap longitudinally, the screw cap is divided into an outer ring and an inner ring by the ring-shaped groove, more than two openings are arranged on the outer ring of the screw cap longitudinally, and the part with the maximum outer diameter of the screw cap is lower than the upper end surface of the screw cap; a screw hole matched with the shape of the screw cap is arranged on the steel plate, the inner diameter of an inlet of the screw hole is less than the maximum outer diameter of the of the screw cap, the maximum inner diameter of the screw hole is larger than the inner diameter of the inlet of the screw hole and less than the maximum outer diameter of the screw cap, and the inlet of the screw hole and an arc of the part with the maximum inner diameter are connected to form a laminated arc; and the self-locking screw penetrates through the screw hole arranged on the steel plate and is implanted into the steel plate for compressing and fixing the steel plate, and therefore, the part with the maximum outer diameter of the outer ring of the screw cap pushes against the laminated arc of the screw hole in a clamping way, so as to realize self locking. The self-locking fixed part has the advantages that the structure is simple, the cost is low, the processing and the production are easy, the implantation is convenient, the operation is fast, the incisura is small, and the surgery time is saved.

The invention relates to a pedicle screw seat cross-connecting device, which comprises a first nail base, a second nail base, a first connecting rod, a second connecting rod, a first locking plug and a second locking plug, a first connecting rod radially passes through the first nail base, and the first locking plug is screwed into the first nail base and abuts the first connecting rod, and a second connecting rod radially passes through the second nail base, the second locking plug is screwed into the second nail base and abuts the second connecting rod, the innovation is that the pedicle screw seat cross-connecting device also comprises a first horizontal connecting rod and a second horizontal connecting rod, one end of the first horizontal connecting rod is arranged at the first nail base and located between the first connecting rod and the first locking plug, and one end of the second horizontal connecting rod is disposed on the second nail base and located between the second connecting rod and the second locking plug; and the other end of the first horizontal connecting rod is connected with the other end of the second horizontal connecting rod through a connecting mechanism. The pedicle screw seat cross-connecting device not only reduces the surgical notch, but also improves the safety of the operation.