43 results about "Transpedicular fixation" patented technology

A method of securing a spinal rod to a spine includes providing a head portion having a channel extending therethrough for receiving a spinal rod, the channel and the head portion being bounded by a first side wall and a second side wall. The method includes providing a bone fastener depending from the head portion, arranging the spinal rod in the channel of the head portion, and providing a locking cap having first and second portions that are rotatable relative to one another, the second portion of the locking cap having an underside with a recess. The method includes assembling the locking cap with the head portion so that the first portion is between the first and second side walls and so that the recess of the second portion of the locking cap is in contact with the spinal rod. While maintaining the recess of the second portion of the locking cap in contact with the spinal rod, the first portion of the locking cap is rotated, such rotation translating into a locking force applied by the second portion of the locking cap onto the spinal rod.

The present invention relates to a system and methods generally aimed at monitoring the trajectory of surgical instruments and especially for monitoring the trajectory of surgical instrument used during pedicle fixation to ensure the proper placement of pedicle screws.

Systems and methods for determining a desired trajectory and / or monitoring the trajectory of surgical instruments and / or implants in any number of surgical procedures, such as (but not limited to) spinal surgery, including (but not limited to) ensuring proper placement of pedicle screws during pedicle fixation procedures and ensuring proper trajectory during the establishment of an operative corridor to a spinal target site.

An adaptable spinal facet joint prosthesis, including a pedicle fixation element; a laminar fixation element; and a facet joint bearing surface having a location adaptable with respect at least one of the pedicle fixation element and the laminar fixation element. The invention also includes a method of implanting an adaptable spinal facet joint prosthesis including the steps of determining a desired position for a facet joint bearing surface; and attaching a prosthesis comprising a facet joint bearing surface to a pedicle portion of a vertebra and a lamina portion of a vertebra to place the facet joint bearing surface in the desired position. The invention also provides a facet joint prosthesis implant tool including a tool guide adapted to guide a vertebra cutting tool; and first and second fixation hole alignment elements extending from the saw guide.

A method and associated system of implanting a vertebral anchor such as a pedicle screw assembly includes the steps of implanting a number of pedicle screws into a series of vertebrae; attaching a number of provisional posts to respective pedicle screws, each provisional post including a provisional saddle; bending a rod to conform to a desired alignment of the provisional saddles; removing the provisional posts from the pedicle screw heads; and connecting the bent rod to the pedicle screw heads. Advantageously, the method allows external fitting and sizing of a fixation rod before it is implanted and secured to the vertebral anchors via a minimally invasive manner.

A spinal dynamic stabilization device for maintaining an anatomical height between two adjacent vertebras is provided. Each vertebra includes a spinous process and two symmetric pedicles. The spinal dynamic stabilization device includes a supporting member, at least one anchoring member, and at least one connecting member. The supporting member is disposed between the spinous processes. The anchoring member is fixed in one of the vertebra via one of the pedicles. The connecting member connects the supporting member to the anchoring member, fixing a relative position between the supporting member and the anchoring member, further fixing a relative position between the vertebras.

A system may be fixed in place to stabilize a spinal fusion, or released for dynamic motion, thereby providing stability with flexibility in conjunction with artificial mechanical or plasma discs, or normal physiologic discs. In terms of apparatus, the invention involves pedicle fixation utilizing a superior facet complex (SFC) with soft tissue attachment points. The SFC receives one or more inferior facet gliding arms (IFGAs) and associated joints which permit flexion, extension, lateral bending and / or other movements.

The present invention relates to a system and methods generally aimed at monitoring the trajectory of surgical instruments and especially for monitoring the trajectory of surgical instrument used during pedicle fixation to ensure the proper placement of pedicle screws.

Provided is a novel system that includes an anterior vertebral body plate with at least one bone spike pivotally attached to the plate and capable of being manually inserted into underlying bone to securely fix the plate to the bone. Also provided is a method of stabilizing cervical vertebrae using the disclosed system.

A pedicle fixation assembly and method for assembly comprises a screw head comprising a male bulbous end; a bone fixator component comprising a female concave semi-spherical socket for receiving the screw head; a locking saddle pin for engaging the screw head and the bone fixator component; and a blocker for engaging the screw head and for securing the longitudinal member.

The invention discloses devices, methods and systems for implanting articulating devices on the human spine. In some embodiments, three or more vertebrae are movable interconnected with artificial joints. Some embodiments are particularly well suited for implanting in the lumbosacral area of the spine. Some embodiments employ hybrid systems combining translaminar fixation with pedicular fixation of the device components. Some embodiments combine facet joint replacement with disc replacement.

An adaptable spinal facet joint prosthesis, including a pedicle fixation element; a laminar fixation element; and a facet joint bearing surface having a location adaptable with respect at least one of the pedicle fixation element and the laminar fixation element. The invention also includes a method of implanting an adaptable spinal facet joint prosthesis including the steps of determining a desired position for a facet joint bearing surface; and attaching a prosthesis comprising a facet joint bearing surface to a pedicle portion of a vertebra and a lamina portion of a vertebra to place the facet joint bearing surface in the desired position. The invention also provides a facet joint prosthesis implant tool including a tool guide adapted to guide a vertebra cutting tool; and first and second fixation hole alignment elements extending from the saw guide. The invention also provides systems for treating spinal pathologies that include intervertebral discs in combination with spinal and facet joint prostheses.

An adaptable spinal facet joint prosthesis may include a pedicle fixation element; a laminar fixation element; and a facet joint bearing surface having a location adaptable with respect at least one of the pedicle fixation element and the laminar fixation element. Methods of implanting an adaptable spinal facet joint prosthesis may include determining a desired position for a facet joint bearing surface; and attaching a prosthesis comprising a facet joint bearing surface to a pedicle portion of a vertebra and a lamina portion of a vertebra to place the facet joint bearing surface in the desired position. A facet joint prosthesis implant tool may include a tool guide adapted to guide a vertebra cutting tool; and first and second fixation hole alignment elements extending from the saw guide. Systems for treating spinal pathologies may include intervertebral discs in combination with spinal and facet joint prostheses.

An adaptable spinal facet joint prosthesis, including a pedicle fixation element; a laminar fixation element; and a facet joint bearing surface having a location adaptable with respect at least one of the pedicle fixation element and the laminar fixation element. The invention also includes a method of implanting an adaptable spinal facet joint prosthesis including the steps of determining a desired position for a facet joint bearing surface; and attaching a prosthesis comprising a facet joint bearing surface to a pedicle portion of a vertebra and a lamina portion of a vertebra to place the facet joint bearing surface in the desired position. The invention also provides a facet joint prosthesis implant tool including a tool guide adapted to guide a vertebra cutting tool; and first and second fixation hole alignment elements extending from the saw guide. The invention also provides systems for treating spinal pathologies that include intervertebral discs in combination with spinal and facet joint prostheses.

A system may be fixed in place to stabilize a spinal fusion, or released for dynamic motion, thereby providing stability with flexibility in conjunction with artificial mechanical or plasma discs, or normal physiologic discs. In terms of apparatus, the invention involves pedicle fixation utilizing a superior facet complex (SFC) with soft tissue attachment points. The SFC receives one or more inferior facet gliding arms (IFGAs) and associated joints which permit flexion, extension, lateral bending and / or other movements.

An adaptable spinal facet joint prosthesis, including a pedicle fixation element; a laminar fixation element; and a facet joint bearing surface having a location adaptable with respect at least one of the pedicle fixation element and the laminar fixation element. The invention also includes a method of implanting an adaptable spinal facet joint prosthesis including the steps of determining a desired position for a facet joint bearing surface; and attaching a prosthesis comprising a facet joint bearing surface to a pedicle portion of a vertebra and a lamina portion of a vertebra to place the facet joint bearing surface in the desired position. The invention also provides a facet joint prosthesis implant tool including a tool guide adapted to guide a vertebra cutting tool; and first and second fixation hole alignment elements extending from the saw guide. The invention also provides systems for treating spinal pathologies that include intervertebral discs in combination with spinal and facet joint prostheses.

The invention relates to a novel cervical vertebra dynamic internal fixing device, which comprises an artificial cervical vertebra body and an artificial intervertebral disc. The artificial cervical vertebra body is inlaid on any vertebral body of the third section to the seventh section of partially cut human cervical vertebra. Two screw holes and two clamping grooves are symmetrically arranged on the artificial cervical vertebra body. A vertebral pedicle screw which is fixedly connected with the section of the human cervical vertebra body and a vertebral pedicle is arranged in each screw hole in a penetrating way. A vertebral pedicle screw lock pin cross bar is positioned and clamped between the two clamping grooves. The artificial intervertebral disc is arranged at the upper end and the lower end of the artificial cervical vertebra body, is arranged at a vertebral gap between an upper vertebral body and a lower vertebral body close to the position of the artificial cervical vertebra body, and comprises artificial nucleus pulposus and an artificial end plate. A screw hole is arranged on the artificial end plate. An artificial end plate fixing screw which is fixedly connected with the corresponding section of the artificial cervical vertebra body is arranged in the screw hole in a penetrating way. By adopting the internal fixing device, the invention has the advantages that the surgical invasion is small, the operation is easy and the dynamic fixation of the cervical vertebra after the subtotal excision of an anterior cervical single vertebral body can be realized.

The invention relates to a TARP (transoral anterior reduction plate) based guide template for axis anterior transpedicular fixation. The guide template comprises a base plate. A longitudinal rectangular boss and a transverse rectangular boss are arranged on one side of the base plate. Two guide sleeves matched with vertebral pedicle screws in inner diameter are arranged on the other side of the base plate. The upper surface of the transverse rectangular boss is a transverse positioning curved surface matched with the outer surface, facing the lower side of the oropharynx, of the axis. The upper surface of the longitudinal rectangular boss is a longitudinal positioning curved surface matched with the outer surface, facing the middle of the oropharynx, of the axis. The surfaces of the tail ends of the guide sleeves are in contact. Holes of the guide sleeves extend to penetrate the base plate respectively. The axis of each hole is the extension line of the central axis of the corresponding vertebral pedicle. The guide template is simple in structure and accurate in positioning.

The invention discloses a minimally invasive spinal operation channel device for vertebral pedicle fixation. The device comprises a first spinal operation channel device, a second spinal operation channel device and a linkage device. The two ends of the linkage device are linked to the first spinal operation channel device and the second spinal operation channel device respectively to form mutualconstraint fixation relationship of the first spinal operation channel device and the second spinal operation channel device, the first spinal operation channel device and the second spinal operationchannel device each include a guiding needle, an expansion sleeve and an outer sleeve, and the linkage device comprises a lock ring sleeve and a connecting locking device fixed to the first spinal operation channel device and the second spinal operation channel device. The linkage device of the device is more compactly connected with the first spinal operation channel device and the second spinaloperation channel device, the mutual constraint relationship formed between the first spinal operation channel device and the second spinal operation channel device is ensured, the relative position relationship between the first spinal operation channel device and the second spinal operation channel device is ensured, the linkage device is more convenient and rapid to fix, and the operation efficiency is improved.

The invention discloses a guiding device for an anterior cervical internal fixation and relates to the technical field of medicinal instrument and apparatuses for an orthopedic surgery. The guiding device comprises a positioning plate and a guider, wherein the positioning plate comprises a development board and a fixing plate; positioning holes are uniformly formed in the positioning plate; the guider comprises a fixing rod, a guiding arm, a guiding rod and a fastening device. According to the guiding device disclosed by the invention, a doctor is enabled to conveniently and accurately determine implantation points and implantation angles of pedicle screws, and the difficult problems of operation failure and injury to artery and nerve are easily caused when anterior cervical pedicle screws are fixed due to difference of angles and positions of pedicles of different patients are solved; by matching with a steel plate for use, the guiding device has beneficial effects that a fixing effect is excellent, and enough stability can be provided; secondary operation for fixing is not needed, so that pains of the patient and medical expenses are reduced; rehabilitation speed is high, and the like.

The present invention relates to a spine fixation device containing a set screw having a double spiral form. The spine fixation device is characterized by comprising: a pedicle fixation screw which has a head portion having a receiving groove of a certain depth formed thereinside and a plurality of female screws formed in one region of the inner circumference of the receiving groove, and a screw portion extended from one side of the head portion lengthwise and embedded into a pedicle, and is fixed to a damaged pedicle; a spine rod which is received in the receiving groove to connect the pedicle fixation screw, thereby realigning the angle and interval of the pedicle; and a set screw which forms a plurality of male screws with the same screw inner diameter, the same screw thread direction and different pitches, and is screw-coupled to the female screws of the pedicle fixation screw to prevent the movement of the rod received in the receiving groove. Therefore, the fastening force of the pedicle fixation screw and the set screw is increased, the movement of the spine rod is prevented in case of the realignment of the pedicle, and a spine can be realigned stably.

The invention discloses a vertebral pedicle fixing type spinal operation channel device and a using method thereof. The device comprises a first spinal operation channel device, a second spinal operation channel device and a duplex fixing ring, wherein the duplex fixing ring is arranged between the first spinal operation channel device and the second spinal operation channel device, and is separately connected with the first spinal operation channel device and the second spinal operation channel device to fix a relative position between the first spinal operation channel device and the secondspinal operation channel device. By the mode, an optional one of the first spinal operation channel device and the second spinal operation channel device is used as a fixed end, a vertebral pedicle fixing nail is planted in the other one of the first spinal operation channel device and the second spinal operation channel device, a fixing structure of a spinal operation channel is simplified, firmfixation is implemented, and furthermore, the cost is low.

The invention relates to a spinal pedicle fixation positioning guide system. The spinal pedicle fixation positioning guide system has a positioning guide device and a central management device which are communicably connected to each other through a sensor. The positioning guide device is connected with an inner fixed surgical opener, a wire tapping device and a nail holder, the central managementdevice acquires and records the instantaneous three-dimensional coordinates of the sensor, and the three-dimensional coordinates are calculated to obtain the correct open direction and open distance,an internal fixing mechanism is guided to operate according to the open direction and the open distance. Therefore, the spinal pedicle fixation positioning guide system of the present invention can quickly and accurately perform the spinal pedicle screw fixation operation without quickly and accurately guiding the internal fixation surgical instrument, and is simple in operation and convenient tocarry.

The invention relates to a method for implanting a pedicle screw. An external device acquires instant coordinates of a passage opening assembly, instant coordinates of a screw tapping assembly and instant coordinates of a screw mounting assembly separately, wherein the passage opening assembly, the screw tapping assembly and the screw mounting assembly are used as a spinal pedicle fixation device;the passage opening assembly is operated to obtain a passage opening hole channel; the external device acquires coordinates of a passage opening starting point and coordinates of a passage opening ending point; the passage opening direction and the passage opening distance are obtained according to the coordinates of the passage opening starting point and the coordinates of the passage opening ending point; then the screw tapping assembly and the screw mounting assembly are quickly and accurately guided according to the passage opening direction and the passage opening distance to complete implanting of the pedicle screw; in this way, the method for implanting the pedicle screw can accurately guide the operation of the screw tapping assembly and the screw mounting assembly and has the advantages of being high in accuracy and easy to operate and grasp compared with previous spinal pedicle screw implanting methods.

The invention discloses a vertebral pedicle fixator. The vertebral pedicle fixator comprises a fixing nail and a fastening piece, wherein the fixing nail comprises a nail body and a nail base positioned on the nail body, the nail base is provided with at least two nail grooves, each of the at least two nail grooves is used for accommodating a fixing bar, and the nail base is further matched with fastening piece to fix the fixing bars in the corresponding nail grooves. The invention further discloses a vertebral pedicle fixing system. With the adoption of the manner, during the secondary operation, the operation of cutting open all the parts of the primary operation is not needed, only a new fixing bar needs to be placed in the at least one vacant nail groove, then the extension of the fixing bar is realized, therefore, the wound caused by the secondary operation is small, the bleeding is tiny, the operation time is short, and the clinical application value is high.

According to a kind of spinal pedicle fixation positioning guide system involved in the present invention, because it has the positioning guide device and the central management device that are connected to each other through sensor communication, the positioning guide device and the internal fixation surgery use opener, tapper and nail The central management device obtains and records the real-time three-dimensional coordinates of the sensor, and calculates the three-dimensional coordinates to obtain the correct open-circuit direction and open-circuit distance, and guides the internal fixation mechanism to operate based on the open-circuit direction and open-circuit distance. Therefore, The spinal pedicle fixation and positioning guide system of the present invention can quickly and accurately guide the internal fixation surgical instruments to quickly and accurately perform the spinal pedicle surgical fixation operation, and is simple to operate and easy to carry.

The invention discloses a combined type self-pelvis prosthesis. The combined type self-pelvis prosthesis comprises an artificial whole-hip joint and a pedicle screw rod fixation system. The artificialwhole-hip joint comprises an acetabulum prosthesis and a short rod. The acetabulum prosthesis is in a hollow semi-spherical shape, the concave side of the acetabulum prosthesis is used for the caputfemoris at the near end of thigh bone to be embedded, and the convex face of the acetabulum prosthesis is provided with at least three short rods. The pedicle screw rod fixation system comprises a titanium rod and a pedicle screw for fixing the vertebral pedicle. The first end of the titanium rod is fixedly connected with the short rods, and the second end of the titanium rod is fixedly connectedwith the pedicle screw. By flexibly arranging the short rod positions of the artificial whole-hip joint in cooperation with the pedicle screw rod fixation system, the combined type self-pelvis prosthesis has the advantages of being simple in structure, adjustable in installing angle and small in installing condition limitation.