65 results about "Fusion surgery" patented technology

Disclosed herein are spinal implants particularly useful in interbody fusion surgery. One embodiment pertains to a plate configured to establish desired lordosis and / or disc height that may be implanted and secured to a superior and inferior vertebral body. The plate may be interlocked with a spacer component to form a single implant. Also disclosed is an anti-backout mechanism that helps prevent fixators from backing out upon securement of the plate in the spine. Kits comprising different sizes and inclination angles of components are disclosed, which can assist the surgeon in preoperatively assembling an implant to best fit in the surgical site of the patient.

A medical device adapted to facilitate pedicle screw fusion surgery is disclosed herein. The medical device includes a proximal end and a sharp distal end opposite the proximal end. The distal end is configured to allow the medical device to function as an awl. The medical device also includes a body portion defined between the proximal end and the distal end, and a threaded section defined by the body portion near the distal end. The threaded section is configured to allow the medical device to function as a tap. Accordingly, the medical device provides a single tool adapted to function as both an awl and a tap. A corresponding method for securing a pedicle screw to a vertebra is also provided.

A cage to separate and support adjacent vertebrae in the spine that have undergone orthopedic spinal fusion procedures. The cage has first and second spacer members for insertion between adjacent vertebrae with a hinge located between the spacers. An advancing mechanism is located between the first and second spacer members that pivotally moves the first and second spacer members relative to each other at an angle which facilitates the insertion of the cage around the spinal cord. After insertion, the advancing mechanism is operable to position the first and second spacer members in the desired position between the two adjacent vertebrae.

Described herein are stabilization devices, systems and methods to aid in posterior lumbar interbody fusion (PLIF) surgeries. The stabilization devices (“devices”) described herein are typically self-expanding devices that may be implanted into an intervertebral disc and packed with a bone graft or biologic or synthetic material to promote anchoring of the stabilization device and fusion of the vertebrae adjacent to the intervertebral disc.

An implant device for spinal interbody fusion surgery has a shape substantially similar to a human excavated disc space, and includes a first modular end section, at least one modular middle section disposed adjacent to the first modular end section, a second modular end section disposed adjacent to the modular middle section and wherein when the first end section, the middle section and the second end section are placed adjacent to each other, the implant device has a shape with is substantially oval, viewed from top, and a cross section which is bi-convex. The preferred embodiment of the implant device is manufactured from human bone material that has been formed into the shape of the modular components. Alternative embodiments are manufactured from non-human material such as hydrooxyapetite, ceramics, coral and other biodegradable material. Non-resorptable plastic and metal can be used as internal structural members of the implant modules.

A pedicle screw and rod system for minimally invasive spinal fusion surgery that allows for ease of placement of a fusion rod on the heads of pedicle screws. The system includes extender tubes having a bore extending therethrough. The bore includes a cylindrical portion and a key portion. A slot is formed in the tube along the length of the tube and is open to the bore. The pedicle screws are threaded into the vertebra and the extender tubes are coupled to the heads of the screws so that the slots face each other. The rod is positioned in the slots and is slid down the bores to be coupled to the heads of the pedicle screws. Bolts are slid down the tubes and threaded to the heads of the pedicle screws to secure the rod thereto, and the extender tubes are removed.

A technique for providing vascularized autograft to a fusion site in the posteriolateral aspect of a lumbar fusion mass by using a split-thickness laminoplasty technique, is disclosed in co-pending U.S. Provisional Application 60 / 379,371 filed on May 10, 2002 and U.S. patent application Ser. No. ______ filed concurrently with the present application. Devices used to accomplish osteotomies of the laminae, facet joints, and transverse processes are disclosed. The devices include a shaft that can guide the devices, a method of deploying a wire bone saw for dividing these structures through a coronal plane, leaving the periosteum, musculature, and hence blood supply intact. This novel and non-obvious technique will allow for the application of vascularized autograft to the fusion bed in posterior or posteriolateral fusion of the spine.

The invention relates to the technical field of biomedical materials, and particularly relates to a BMP microsphere loaded 3D printing porous metal stent and a preparation method thereof. According to the invention, a loaded microsphere-containing three-dimensional micro-stent is built in each hole of a 3D printing titanium stent. The problem that in the prior art, because the diameter of a hole is overlarge, cells only can be subjected to climbed growth on the two-dimensional space of the wall of the hole, and difficult to be subjected to three-dimensional hierarchical growth in the whole hole is solved, and by filling the three-dimensional micro-stent with a rhBMP-2 or rhBMP-7 loaded chitosan microsphere, a better growth and differentiation environment is provided for cells, thereby further promoting the combination of bone tissues and the stent. The three-dimensional micro-stent provided by the invention makes the complete healing of numerous patients with bone tissue defect caused by illnesses and accidents and the like possible; the three-dimensional micro-stent can also be used as a novel interbody fusion instrument, and applicable to an interbody fusion surgery, therefore, the three-dimensional micro-stent has an important clinical application value.

A posterior cervical fusion surgery assembly and method. The assembly includes a sled adapted to be positioned in a facet joint and two receivers slidably mounted on the sled. The receivers are adapted to support surgical instruments such as a drill, a tap, and a screw. The sled assists in orienting the instruments at a desired angle with respect to the spine.

Methods for facilitating access to the intervertebral disc to deliver materials for disc repair are disclosed. The methods may be used to replace or augment nucleus pulposus as well as to perform interbody fusion procedures. These methods include providing access to the intervertebral disc space by drilling a channel through a vertebral bone, optionally accessing the intervertebral disc space to at least partially remove the disc tissue through the channel in the vertebrae; delivering a disc repairing material to the intervertebral disc space and back-filling the channel in the vertebrae with a channel sealing material. The methods may further comprise distracting the intervertebral height and inserting a restrictor into the channel in the vertebrae. Kits for practicing these methods are also disclosed.

A disc space preparation device that has particular application for removing disc material during spinal fusion surgery. The disc preparation device includes a body portion that houses a motor having a shaft attached thereto that is rotated by the motor. The shaft extends through a chamber in a neck portion of the device and into an open head portion of the device at the end of the neck portion opposite to the housing. The head portion rotates relative to the neck portion. The head portion includes a series of blades that are used to cut-away the disc material. The shaft includes an auger that draws the cut material through the neck portion. A suction port is coupled to the chamber in the neck portion to remove the disc material therefrom.

A method and devices for placing spinal implants including placing the implants completely within a spaced defined between adjacent vertebral bodies where the implants are supported by the cortical bone of the vertebral bodies. An insertion instrument places the implants in pairs with a variable-sized space placed in between. The implants are made of a biocompatible material and are particularly suited for anterior lumbar interbody fusion surgery. The spinal implants used to facilitate spinal fusion, correct deformities, stabilize and strengthen the spine.

The invention provides an expandable interbody fusion cage which comprises a cuboid-like fusion cage body, an expanding lock arranged inside the cuboid-like fusion cage body, an adjusting pull rod connected to the expanding lock in a threaded manner, and a lock cap. The fusion cage body is composed of an adjusting end head and an expanding portion, the expanding portion is formed by an upper expanding body and a lower expanding body which are opening-shaped, an implanting end head is arranged at an opening end of the expanding portion, each of the upper surface of the upper expanding body and the lower surface of the lower expanding body is provided with a load-bearing face with antiskid teeth and coincident with a human endplate in curvature, bone implanting holes in upper-lower correspondence are formed in the middles of the upper expanding portion and the lower expanding portion respectively, two side faces, perpendicular to the load-bearing face, of the expanding portion form arc-shaped adjusting grooves, and the inner diameter of each arc-shaped adjusting groove is reduced stepwise from the implanting end head to the adjusting end head. Stepped adjusting is realized by adopting the stepwise arc-shaped adjusting grooves, convenience is brought to interbody fusion surgery quantization, and the expandable interbody fusion cage is simple and convenient to use and operate and ideal in physiological lordosis restoration of lumbar vertebra.

The present invention relates to systems and methods for spinal fusion procedures that can allow all components of the spinal fusion procedure to be inserted into the wound of a patient at once, and can thus minimize the number of components that must be separately inserted into a wound. This can be accomplished by providing a intervertebral fixation system that allows an intervertebral cage, vertebral fixation plate, and drill guides to be assembled into a single unit prior to insertion into a patient.

An intervertebral implant device, including: a pair of substantially parallel opposed arcuate surfaces; a pair of substantially parallel opposed frictional surfaces each including a plurality of raised structures; a substantially curved end wall joining the pair of parallel opposed arcuate surfaces; and a substantially recessed end wall joining the pair of parallel opposed arcuate surfaces; wherein the intervertebral implant device defines one or more voids in which a bone graft material is selectively disposed. Preferably, the substantially recessed end wall is configured to selectively and pivotably receive one or more surgical implantation devices.

Devices for eliciting motor evoked potentials during anterior cervical discectomy and fusion procedures are provided, particularly an electrode for directly stimulating a vertebral post.

A growth rod distraction system a domino having first and second bores provided therein. First and second spinal rods are respectively disposed within the first and second bores for movement relative to the domino First and second spur gears are disposed within the domino and respectively cooperate with the first and second growth rods such that rotation of the spur gears causes axial movements of the growth rods relative to the domino The spinal rods may be formed either from a flexible polymer material (such as a PEEK, carbon fiber PEEK, PEAK, or similar medical grade polymer material) or a hybrid combination of such flexible polymer material and a metallic material (such as nitinol or similar medical grade metallic material). The spinal rods can also be used for fusion or non-fusion surgery of the spine to stabilize two or more vertebrae.

The invention provides a set of appliances for posterior lumbar interbody minimally invasive fusion, comprising a front narrow-handle retractor and a rear narrow-handle retractor, wherein the front narrow-handle retractor comprises a front pointed end, a front head part, a front body part and a front anti-skid handle; the rear narrow-handle retractor comprises a rear pointed end, a rear head part, a rear body part and a rear anti-skid handle; the front pointed part and a front arc tail end are bent in the same direction; and the rear pointed part and a rear arc tail end are bent in reverse directions. The set of appliances of the invention has the advantages of reasonable design, simple and convenient making process, low cost and convenience for use. By using the invention, the surgical incision can be reduced, the damage of the surgery to paravertebral muscles is reduced, the surgery cost is reduced and the surgery time is also shortened. The invention provides a set of simple and easily learnt teaching appliances for posterior lumbar minimally invasive fusion for training the clinical surgery physicians.

The invention discloses a lumbar intervertebral fusion device. The lumbar intervertebral fusion device is a structural component formed by integrated printing of titanium alloy through a 3D printer, and is composed of a vertical-through fusion device body and a bone grafting region surrounded by the fusion device body; through holes are densely formed in an annular wall of the fusion device body in the up-down and front-back direction; an instrument groove and an instrument hole are preferentially formed in the right wall of the fusion device body, and blind holes are preferentially formed inthe inner surfaces of the left wall and the right wall. The lumbar intervertebral fusion device is high in strength, the porosity of the fusion device body reaches 50-80%, bone growth is facilitated,and the requirement for the lumbar intervertebral fusion surgery can be met.

A formatted contact-surface adaptation type full support interbody fusion cage comprises an implant assembly, and the rear surface of the implant assembly is connected with an instrument assembly. The formatted contact-surface adaptation type full support interbody fusion cage is characterized in that the implant assembly comprises a front baffle, a supporting rod is arranged on the rear portion of the front baffle and connected with a deformation post, and a rear check ring is arranged on the tail section of the deformation post; meanwhile, the instrument assembly comprises an outer fixed tube, an inner fixed rod is arranged inside the outer fixed tube, a conduction tube is arranged on the periphery of the outer fixed tube, and the tail end of the inner fixed rod is connected with a driving assembly. Thus, by means of the implant assembly, the instrument assembly and the driving assembly, the formatted contact-surface adaptation type full support interbody fusion cage can be effectively matched with the interbody fusion surgery so as to avoid postoperation long-term interbody height loss. Besides, the formatted contact-surface adaptation type full support interbody fusion cage is reasonable in structure, easy and convenient to operate, and convenient to popularize and use.

The invention provides an adjustable interbody fixation and fusion device and relates to a spinal interbody fusion surgery instrument. The adjustable interbody fixation and fusion device is provided with an upper support platform, a lower support platform, a left sliding support block, a right sliding support block, a rotating shaft, a main rotating gear, an auxiliary rotating gear and a handle, wherein the left sliding support block and the right sliding support block are arranged on the left side and the right side of the upper support platform and the lower support platform respectively; the rotating shaft is arranged between the upper support platform and the lower support platform; the left end and the right end of the rotating shaft are connected with the left sliding support block and the right sliding support block respectively; the main rotating gear is connected with the right end of the rotating shaft; the auxiliary rotating gear is meshed with the main rotating gear; the handle is connected with the main rotating gear. With the adoption of the adjustable interbody fixation and fusion device, surgical operation can be simplified, surgical time can be shortened, the surgical treatment effect can be improved, and the medical expenses of a patient can be reduced; the height of the device can be adjusted according to the interbody space height, the fusion range of a kidney-shaped fusion surface is wider, the fusion effect of a bone trabecula structure is better, the surgical operation is more simplified, and the long-term effect of fixation and fusion is better.

A method, tools, and system for performing a percutaneous or minimally invasive spine fusion procedure are provided. A trocar and then dilator are used to create a channel for a hollow and longitudinally slit delivery tube. The method includes inserting a decorticator, such as a rasp, via a delivery tube, decorticating a first region of a first bone associated with a spine, and pushing a bone fusion substance via the delivery tube to the region to fuse the first region with a second region of a second bone associated with the spine. The spine fusion may be a posterolateral fusion and the first region may be a transverse process region of a lumber spine. The bone fusion substance may be pushed using a pusher instrument inserted into the delivery tube, and the delivery tube may be removed while the pusher instrument is held in place to direct the bone fusion substance.

The present disclosure includes systems, apparatuses, and devices for impeding vertebra displacement. In accordance with embodiments of the present disclosure, a method for performing spinal fusion surgery includes implanting a spinal fusion instrumentation between a second and a third vertebra so as to promote a fusion between the second and third vertebra. The method also includes coupling a first fastener attached to a first end of an elongated tissue to a first vertebra that is not coupled to the second vertebra or the third vertebra via the spinal fusion instrumentation. Additionally, the method includes coupling a second fastener attached to a second end of the elongated tissue to the second vertebra, so as to impede a lateral displacement of the first vertebra after the spinal fusion surgery.

A method, tools, and system for performing a percutaneous or minimally invasive spine fusion procedure are provided. A trocar and then dilator are used to create a channel for a hollow and longitudinally slit delivery tube. The method includes inserting a decorticator, such as a rasp, via a delivery tube, decorticating a first region of a first bone associated with a spine, and pushing a bone fusion substance via the delivery tube to the region to fuse the first region with a second region of a second bone associated with the spine. The spine fusion may be a posterolateral fusion and the first region may be a transverse process region of a lumber spine. The bone fusion substance may be pushed using a pusher instrument inserted into the delivery tube, and the delivery tube may be removed while the pusher instrument is held in place to direct the bone fusion substance.

The invention discloses a thoracolumbar interbody fusion cage. The interbody fusion cage is a structural component formed by integrated printing of a titanium alloy material through a 3D printer and is composed of a vertical through fusion cage body and a bone grafting region formed by being surrounded by the fusion cage body; through holes are densely formed in the annular wall of the fusion cagebody in the vertical and front-back directions; a tooth surface cutting groove is preferentially formed in the annular wall of the fusion cage body; an instrument groove and an instrument hole are preferentially formed in the left wall of the fusion cage body, and a blind hole is preferentially formed in the inner surface of the right wall. The thoracolumbar interbody fusion cage is high in strength, the porosity of the infusion cage body reaches 50-80%, bone growth is facilitated, and the requirement for thoracolumbar interbody fusion surgery can be met.

An interbody spinal fusion cage for posterior interbody fusion procedures includes a superior member and an inferior member connected to each other via a joint. The joint allows the interbody spinal fusion cage to achieve lordosis even if implanted non-orthogonal to the sagittal plane. For example, the joint can be a hinge oriented non-normal to a longitudinal axis of the interbody spinal fusion cage, a polyaxial ball joint, and / or a universal joint. Complementary locking mechanisms, such as locking teeth or a ratchet-and-pawl arrangement, can be provided near the posterior ends of the superior and inferior members in order to prohibit the posterior ends of the superior and inferior members from separating from each other in situ. Bone holes can be provided in the superior and inferior members.

The invention relates to an interbody fusion cage, which includes an interbody fusion cage main body and a lamellar propping-open part. The interbody fusion cage main body includes an upper supportingpart and a lower supporting part which are mutually hinged, an accommodating groove is formed in the lower surface of the upper supporting part and / or the upper surface of the lower supporting part to be used for accommodating the lamellar propping-open part in a horizontal state, a supporting groove is formed in the upper surface of the lower supporting part to be used for clamping the lamellarpropping-open part in a vertical state, the accommodating groove includes an opening extending to the side edge of the upper supporting part and / or the lower supporting part to enable the lamellar propping-open part to rotate from the horizontal state to the vertical state through the opening, and thus the interbody fusion cage main body is propped open. According to the interbody fusion cage, damage to a human body can be greatly reduced during operation, the structure is also simple, operation is convenient, and the interbody fusion cage can be applied to interbody fusion surgery of lumbar vertebra lateral anterior approach.

The invention discloses a method for preparing implantable bone grafts by de-organification and 3D printing of animal bones. The method comprises the steps of de-organification, adhesive injection and reinforcement as well as 3D molding printing. Besides, the method is simple and easy, suitable for orthopedic bone defect repair, bone tumor, spine graft fusion surgery and other areas requiring bone graft materials. Also, the bone graft is characterized by wide range of raw materials, low cost, micro-structure similar to human skeleton, good features for promotion of osteogenesis, osteoinductivity and osteoconductivity, complete degradation in human body as well as no rejection, and consequentlyenjoys a bright market perspective.