20 results about "Spinal instrumentation" patented technology

The present invention provides a fusion door fixation device and spinal internal fixation system, comprising a fixation plate body and an optional fusion plate; the fixation plate body comprises an upper fixation plate for fixing the upper lamina at the lamina door, a lamina door support plate for supporting, and a lower fixation plate for fixing the lower lamina at the lamina door, which are connected in sequence. The lower fixation plate is provided with a second fusion hole, in which a second fusion screw is provided. The second fusion screw passes through the vertebral body at the current level and is fixed to the vertebral body at the next level; the fusion plate is fixed to the vertebral body at the current level and is located on the opposite side of the lower fixation plate. The fusion plate is provided with a first fusion hole, in which a first fusion screw is provided. The first fusion screw passes through the vertebral body at the current level and is fixed to the vertebral body at the next level. The fusion screw is used to fix the lamina to the lamina at the next level, thereby achieving rigid fixation between the facet joints while maintaining stable support, providing favorable conditions for fusion between the vertebral bodies.

The utility model discloses a minimally invasive long tail spine internal fixing system, which relates to the technical field of medical apparatus and instruments, and comprises a fixer main body, the top of the fixer main body is provided with a positioning component, the fixer main body comprises a fixing screw, the top of the fixing screw is provided with a mounting seat, the outside of the mounting seat is provided with an extension seat, and the extension seat is provided with a fixing component. A clamping groove is formed in the middle of the side wall of the extension seat, and a correcting rod is arranged in the middle of the clamping groove. According to the minimally invasive long-tail spine internal fixing system, positioning connection of the correcting rod is achieved through the arranged positioning assembly, the correcting rod is connected into the arc-shaped connecting base through the arranged threaded rod, the arranged positioning block is inserted into the threaded rod, and when the threaded rod descends, the positioning block is driven to be clamped to the outer portion of the correcting rod, so that the correcting rod is fixed to the position of the correcting rod. The arc-shaped clamping groove in the bottom of the positioning block is arranged outside the correcting rod in a sleeving mode, limiting connection of the correcting rod is achieved, the correcting rod is prevented from deviating in the using process, and the using stability of the device is improved.

The utility model discloses an absorbable fixing device for internal fixation of a spine. The absorbable fixing device is used for being fixed to the spine. The absorbable fixing device comprises an absorbable fixing rod and an absorbable pedicle screw or an absorbable bone hook. The absorbable pedicle screw or the absorbable bone hook is arranged on the outer wall of the absorbable fixing rod in a sleeving mode, so that the absorbable pedicle screw or the absorbable bone hook can move in the radial direction of the central axis of the absorbable fixing rod. According to the internal fixation device, temporary internal fixation can be carried out on an operation section after an operation, orthopedic operation is effectively maintained, and the problem that in the prior art, secondary operation needs to be carried out to take out internal fixation equipment, and trauma is caused is solved.

The utility model discloses a spine internal fixing structure. The spine internal fixing structure is used for being fixed to a spine part. The spine internal fixing structure comprises an absorbable unit, the absorbable unit comprises an absorbable pedicle screw and an absorbable fixing rod, and the absorbable fixing rod is matched with the absorbable pedicle screw; the non-absorbable unit is connected with the absorbable unit through a connecting piece, and the non-absorbable unit and the absorbable unit are combined and fixed at the spine part; the non-absorbable unit comprises a non-absorbable pedicle screw and a non-absorbable fixing rod, and the non-absorbable pedicle screw is matched with the non-absorbable fixing rod.

The invention discloses a length-adjustable spinal internal fixing device, and particularly relates to the field of medical instruments. Comprising a connecting pipe; the two connecting pieces are connected to the two sides of the connecting pipe in a sliding mode respectively; the two positioning sleeves are respectively connected to the free ends of the corresponding connecting pieces in a sliding manner; the two flexible casing pipes are arranged in the corresponding positioning sleeves respectively, the inner diameter of the flexible casing pipes is the same as that of the openings in the positioning sleeves, and the flexible casing pipes are connected with the corresponding connecting pieces in a sliding and sealing mode; the two positioning rings are connected to the outer walls of the corresponding positioning sleeves in a sliding mode, and each positioning ring is provided with a limiting hole; the two bone nails are arranged in the limiting holes of the corresponding positioning rings in a penetrating manner; and the driving piece can drive the two connecting pieces to move towards the interior of the positioning sleeve. By the adoption of the technical scheme, the problem that the length of an existing spine internal fixing device cannot be adjusted is solved, and self-adaptive adjustment of the length can be achieved.

The utility model relates to medical instrument technical field, concretely relates to a transverse connecting device for internal fixation of spine, include: two cross links, the cross link includes the hook body and the stem that are connected with each other, fixed part is used for locking the stem of two cross links each other, when the fixed part is locked can force two stems to move towards each other, make two stem each other and produce locking force. The utility model discloses through setting up first limiting portion and second limiting portion on the stem of two cross links respectively, upgrade the stem of cross link originally smooth surface to the interlocking surface structure of carding, utilize the movement of each other when locking of fixed part, force first limiting portion active embedding nearest neighbor second limiting portion, on the basis of friction locking combination mechanical interlock, mechanical interlock structure still keeps certain locking force after the loosening of fixed part, significantly reduces the risk of postoperative failure.

The invention discloses an accurate forcible entry device for a spinal screw arm, belongs to the technical field of spinal surgical instruments, and solves the problem of safe removal when a screw plug is locked. According to the scheme, a lever system is composed of symmetrically-arranged U-shaped connecting bases, force arm rods with telescopic structures and a grab handle, and a fulcrum is established through a connecting rod with the diameter being 6 mm; the length of the force arm rod can be adjusted from 0 mm to 150 mm through a telescopic locking structure that a cross clamping groove is matched with a cross clamping pin, and about 40-time extrusion force is generated at the position of a screw arm to enable the screw arm to be plastically deformed when separating force F1 is applied to the grab handle by means of the lever ratio of a 400-mm power arm to a 10-mm resistance arm. The device is mainly used for accurately taking out a single locking screw plug in a spinal internal fixation operation, and bone-nail interface looseness and secondary operation injury are avoided.

A spine internal fixing device with a fusion function comprises a pedicle screw, the pedicle screw comprises a screw body, a screw tail is arranged at the upper end of the screw body, a nut is connected to the screw tail through internal threads, the screw body and the screw tail are of a honeycomb structure simulating cancellous bone, and solid external threads are arranged on the outer surface of the screw body. According to the spinal internal fixation device with the fusion function, a full-assembly simulation cancellous bone honeycomb structure of a pedicle screw rod nut and a matched connecting piece is prepared by adopting a 3D printing technology, and meanwhile, solid structures of key stress parts such as an external thread tip threaded connection surface are reserved so as to guarantee early mechanical fixation strength; after the components are assembled, a continuous bone ingrowth channel is formed, so that the transformation of internal fixation of the spine from temporary mechanical support to permanent osseous fusion is realized, and various intervertebral, intervertebral, posterior lateral and transverse process bone grafting fusion steps in a traditional spine fusion operation can be omitted.

The application discloses an artificial lamina, which comprises a lamina body and a lamina fixing device; at least two fixing holes are formed on both sides of the lamina body, and the fixing holes on the two sides are correspondingly arranged; an internal thread is arranged in the fixing hole; a receiving groove is formed at each corner of the lamina body; the lamina fixing device comprises a fixing block, a screw rod, a nut and a jackscrew, the fixing block is provided with a transverse through hole, a longitudinal hole formed on the upper surface and a groove capable of engaging with a titanium rod, the transverse through hole and the longitudinal hole are communicated, and internal threads are arranged in the transverse through hole and the longitudinal hole; an external thread on the screw rod is matched with the internal thread of the transverse through hole and can pass through the transverse through hole; an external thread of the jackscrew is matched with the internal thread of the longitudinal hole and can be screwed into the longitudinal hole; an external thread of the screw rod is matched with the internal thread of the nut and can pass through the nut; the external thread on the screw rod is matched with the internal thread of the fixing hole, and the screw rod passes through the corresponding fixing hole. The application further discloses a spinal internal fixation device comprising the artificial lamina.

The invention relates to the field of medical instruments, in particular to a spinal internal fixation system which comprises a prosthesis with a specific structure, one of a hydroxyapatite coating, a zirconia ceramic coating and the like is arranged on the surface of the prosthesis, and the prosthesis comprises a pedicle screw, a connecting seat, an adjusting screw plug, a locking screw plug, a fixing rod, an attaching seat, a spring and the like. The pedicle screw is provided with a specific connecting portion, a middle portion and a head portion, the middle portion is provided with cortical bone threads, the head portion is provided with cancellous bone threads, the adjusting screw plug and the locking screw plug can clamp the fixing rod, the attaching base can be rotationally connected with the adjusting screw plug and attached to the fixing rod, the connecting base is provided with a sliding groove matched with the attaching base to slide, and the adjusting screw plug is provided with an embedding groove for the attaching base to be rotationally embedded. The spine internal fixation system has the technical effects of being excellent in performance, reasonable in structure and good in adaptability.

The utility model relates to the technical field of medical instruments, in particular to an angle-changeable spinal internal fixing device which comprises a pedicle screw, a fixed plate and a movable plate. The fixed plate is fixedly connected with the movable plate in an inserted mode. The upper end of the pedicle screw is inserted into the fixed plate and the movable plate, and the upper end of the pedicle screw is fixed through a nut; the end part of the connecting rod is hinged with the incomplete gear; the shell is welded to the end, close to the incomplete gear, of the connecting rod. The locking screw is connected with the shell in a threaded rotation mode, and the lower end of the locking screw abuts against the incomplete gear. By improving the angle-changeable spinal internal fixing device, the angle-changeable spinal internal fixing device has the advantages that the direction of the pedicle screw can be set as required, the pedicle screw is firmly and reliably connected with the connecting rod after being fixed, the angle is not easy to change, and the connecting rod is conveniently connected with the pedicle screw; therefore, the problems and defects in the prior art and equipment are effectively solved.

A composite rod for spinal instrumentation may include a metal rod forming an inner core; and a composite polymer derived from a hybrid of PEEK and negatively (−) charged zeolite molecules forming an outer coating around at least a top portion of the inner core. The inner core and the outer coating each have a variable thickness, thereby forming a composite rod having a uniform overall thickness. The composite rod may be 3D-printed and may optimize fusion via rod stiffness and osteoconductive matrix spanning the levels fused, while maximizing pre-operative customization and surgeon intra-operative flexibility.

The utility model relates to an angle measuring tool for a fixed bent rod in a spinal column, which comprises a cylindrical metal rod, a first metal sleeve is fixed at one end of the cylindrical metal rod, a titanium rod is inserted into one side of the top of the first metal sleeve, a metal ring is sleeved at one end of the titanium rod far away from the first metal sleeve, a pointer is fixed on one side of the metal ring, and the pointer is fixed on the other side of the metal ring. The other end of the cylindrical metal rod is sleeved with a second metal sleeve, a supporting column is fixed to the second metal sleeve, a fan-shaped measuring disc used in cooperation with the pointer is fixed to the bottom of the front face of the supporting column, and the bottom of the fan-shaped measuring disc is fixed to the second metal sleeve. The angle formed by the titanium rod can be contrasted on the fan-shaped measuring disc, the operation is simple and easy, a user can conveniently measure the bending angle of the titanium rod in real time in the operation, the situation that the bending angle is not clear through experience is avoided, and accurate control over the bending angle of the titanium rod in the spine screw-rod internal fixation operation is achieved.

The utility model discloses a spinal internal fixation nail-rod device which comprises two connecting rods, the two connecting rods are symmetrically arranged front and back, a plurality of implantation nails are installed on the outer walls of the two connecting rods through fixing assemblies, and connecting assemblies are installed on the outer walls of the two connecting rods. According to the device for fixing the nail rods in the spine, the two connecting rods are far away from each other or close to each other, then the connecting base drives the square rod to slide in the inner wall of the square sleeve, and a positioning rod can penetrate through the square groove and the inner wall of the positioning groove in a penetrating mode and is screwed and fixed in the inner walls of the first circular groove and the first screw groove through a first hexagon socket screw; the length of the square sleeve and the length of the square rod are limited, so that when the whole device is used, the device can adapt to the spine widths of different patients to be adjusted and used, the overall adjusting mode is simple, after adjustment is completed, the overall firmness is sufficient, the looseness condition is prevented, the use range of the whole device is widened, and limitation is prevented.

In a system including a jig device with first and second calibrated holes, insertable through a primary incision, a cannula is configured for insertion through a secondary incision, passing through the calibrated holes. An anchor implant coupled to a line is configured for insertion through the cannula. The anchor implant includes a first tab passable through a hole in a target vertebra to anchor the implant, and a second tab disposable on the line to restrict movement of the first tab. The jig device is configured to be pulled out through the primary incision, extracting the line. The system further includes a fastener for securing the extracted line to spinal instrumentation, vertebral bone, soft tissue, or a combination thereof.

According to the radial pressure sensing pedicle screw for internal fixation of the spine, a sensitive film pressure sensing structure and the internal space of the pedicle screw are integrated, and the radial pressure of the side wall of the screw can be monitored in real time on the premise that the mechanical property of the screw is not remarkably weakened. The structure has the advantages of being compact in structure, clear in force transmission path, sensitive in response, good in repeatability, suitable for miniaturized integration and the like, a new technical path can be provided for intelligent sensing of intelligent pedicle screws and orthopedic internal fixation instruments, and good clinical application prospects are achieved.

The utility model belongs to the technical field of medical instruments, and discloses a compression screw and a spinal internal fixing device. The pressing screw comprises a screw body and an abutting piece, and threads are arranged on the peripheral face of the screw body. The abutting piece is connected with the screw body in a relatively rotating mode, the surface, facing the screw body, of the abutting piece can abut against one end face, in the axis direction, of the screw body, and a plurality of abutting teeth are arranged on the surface, back to the screw body, of the abutting piece. The abutting teeth are used for abutting against a connecting rod of the spine internal fixing device. According to the compression screw and the spine internal fixing device, the probability that the compression screw and the connecting rod slip can be reduced, the effect and stability of fixing the connecting rod can be improved, and the reliability is high.

The utility model belongs to the technical field of medical instruments, and discloses a domino connector and a spinal internal fixation system. The domino joint comprises a first splicing piece, a second splicing piece and a connecting structure. A first mounting hole is formed in the first splicing piece in the first direction and used for mounting a connecting rod; first limiting parts are arranged on the two sides, in the second direction, of the first splicing piece; a second mounting hole is formed in the second splicing piece in the first direction and used for mounting a connecting rod; second limiting parts are arranged on the two sides, in the second direction, of the second splicing piece; the second splicing piece is configured to be selectively arranged on one side, in the first direction, of the first splicing piece or one side, in the second direction, of the first splicing piece; the two matching ends of the connecting structure are connected to the first limiting part and the second limiting part respectively, the connecting structure is used for connecting the first limiting part and the second limiting part in a limiting mode, the flexibility and adaptability of the domino connector are improved, domino connectors of various forms can be formed, the assembling difficulty is lowered, the number of parts is reduced, and the cost is reduced.

The utility model belongs to the technical field of medical instruments, and discloses a transverse connecting device for internal fixation of a spine and an internal fixation system of the spine, the transverse connecting device for internal fixation of the spine comprises a locking assembly and at least two connecting mechanisms, and the at least two connecting mechanisms are rotatably connected; the joint of the at least two connecting mechanisms is detachably connected with a locking assembly so as to lock the at least two connecting mechanisms; the connecting mechanism comprises a transverse connecting head and an adjusting assembly, and the transverse connecting head can be fixedly connected to the connecting rod; one end of the adjusting assembly is rotationally connected to the transverse connector, and the other end of the adjusting assembly is provided with a low-incisura part which is rotationally connected to the low-incisura parts of other connecting mechanisms; the length of the adjusting assembly is adjustable. According to the transverse connecting device for internal fixation of the spine, the connecting stability is improved, the transverse connecting device is formed by assembling a plurality of modularized connecting mechanisms, maintenance is convenient, the maintenance cost is reduced, meanwhile, the connecting positions of the connecting mechanisms are arranged in a low-incisura mode, the overall height is reduced, and the reliability is improved.

The utility model belongs to the technical field of medical instruments, and discloses a spine internal fixing device. The internal fixing device for the spine comprises a connecting rod, a compression nut and at least two pedicle screws, the connecting rod is made of flexible materials so that the bending degree of the connecting rod can be adjusted, positioning grooves are formed in the pedicle screws, the connecting rod is arranged in the positioning grooves in a penetrating mode, the compression nut is arranged in the positioning grooves in a threaded fit mode, and the connecting rod is made of flexible materials. And the connecting rod is pressed in the positioning groove in an abutting manner. The connecting rod is made of a flexible material, can provide mechanical properties better matched with human bones, and has lower rigidity, so that the risk of complications is reduced; the flexibility of the flexible connecting rod can be adjusted as required, so that the use requirements of different patients and different scenes can be better met, and medical image evaluation cannot be influenced; the positioning grooves can play a role in positioning the connecting rods, so that the connecting effect and the stability are improved.