47 results about "Vertebral Joint" patented technology

An implant which is particularly suitable for the repair and/or replacement of a skeletal joint, e.g., a vertebral joint, includes a unit of monolithic bone possessing at least one demineralized region exhibiting properties of flexibility and resilience, the demineralized region having diminished or insignificant capacity for promoting new bone growth.

A prosthetic device can be used as a prosthesis following a discectomy or a corpectomy. The prosthetic device includes two endplates with staggered motion limiting members. The device can be configured to allow six degrees of motion when comparing one endplate relative to the other. The endplates can be configured to fix the joint by changing the body held within the device and by adding a locking plate and fasteners. A method teaches how to insert a device to an intervertebral space via an anterior incision.

The invention relates to an apparatus for the prevention and treatment of back pain, which is based on lumbar, dorsal and cervical strength training machines. The inventive apparatus comprises three vertebral supports which are disposed at a determined angle and which are used to strengthen and stretch (separation of the vertebral joints) the lumbar, dorsal and cervical areas of the back simultaneously in the appropriate movement plane. In order to prevent and treat back pain, once the back has been suitably positioned, all of the back must undergo simultaneous symmetrical strengthening. For said purpose, the apparatus consists of a vertical iron structure comprising three supports, which is perfectly articulated with a horizontal iron structure comprising a seat which can be used to perform seated exercises. According to the invention, the back is pushed against the cervical, dorsal and lumbar supports in order to produce symmetrical strengthening and stretching movements which can be adjusted to suit the individual using height and resistance control means, such as to have a decompressive effect on the vertebral column.

Devices and methods for improved controlled and targeted decortication of the bone of a spinal facet joint are provided. In one aspect, a decortication tool is provided. The decortication tool may include a shaft with proximal and distal end portions. A handle may be connected to the proximal end portion of the shaft. A decortication head may be coupled to the distal end portion of the shaft. In another aspect, a multi-use instrument for use in a spinal system is provided. The instrument may include a body including opposing first and second sides, and opposing first and second surfaces. A cavity may be defined in the body, the cavity being open to the second surface. The instrument may include a bar attached to the second side of the body. A portion of the bar may extend beyond the second surface of the body.

The invention relates to a cervical vertebra anterolateral approach double-cortical fixed hook vertebral joint fusion cage, and belongs to the technical field of medical instruments. The fusion cage comprises a fusion cage body portion used for supporting a vertebra gap, the fusion cage body portion is of a long-strip-block-shaped structure, bone grafting cavities used for being filled with bone grafting materials are formed in two ends of the fusion cage body portion, the two bone grafting cavities correspond to the left portion of the vertebra gap and the right portion of the vertebra gap respectively, and a fixing structure used for being sequentially connected and fixed to a vertebral end plate cortical bone, a cancellous bone and a lateral cortical bone in a penetrating mode is arranged on a cavity wall of one of the bone grafting cavities. By means of the structure, the fusion cage can be suitable for being implanted into the vertebra gap from a cervical vertebra anterolateral approach, can be fixed in the cervical vertebra anterolateral direction through the fixing structure, and is fixed to the vertebral end plate cortical bone, the cancellous bone and the lateral corticalbone, and therefore, the fusion cage can be stably connected to the inside of the vertebra gap, and growth of the bone grafting materials is better facilitated.

The invention relates to the technical field of surgical instruments, in particular to a bone joint, a vertebra joint assembly and a surgical instrument. The bone joint comprises a traction part, a first spherical surface and a second spherical surface, wherein a first through hole and a plurality of second through holes penetrating through the first spherical surface and the second spherical surface are formed in a traction part in an axial direction. The vertebra joint assembly comprises an end joint, a tail joint, a plurality of traction lines and a middle joint formed by sequentially connecting a plurality of joints, and the traction lines are fixedly connected with the end joint and sequentially penetrate through the middle joint and the tail joint. The vertebra joint assembly is applied to the surgical instrument, bending of the vertebra joint assembly in the surgical instrument can drive the tail end operation assembly to deflect in any direction and achieve free rotation, and the bending radius of the vertebra joint assembly is small, so that vertebra joint bending is more flexible; the focus of a patient can be observed more accurately through the endoscope, and finer surgical operation is achieved.

The invention discloses a human waist joint simulation system based on the series-parallel connection of pneumatic muscles and an air cylinder. The pneumatic muscles simulating the human muscles and the thin-walled air cylinder drive the ribs and the vertebrae to move, and the system has the function of completely simulating the movement of the human waist joints. The human waist joint simulationsystem is mainly composed of the pelvis, the ribs, the vertebra, the thin-walled air cylinder, the pneumatic muscles and the like, and the pneumatic muscles simulating the effects of the latissimus dorsi muscles, the obliquus externus abdominis muscles, the rectus abdominis muscles, the erector spinae muscles and the like and the thin-walled air cylinder drive the rib and vertebral joints to rotate around a vertical axis, a sagittal axis and a coronal axis and make linear movement in the three directions. The system is driven by the pneumatic muscles and the thin-walled air cylinder, has the advantages of compact structure, multiple degrees of freedom and good explosion-proof performance, and can be used for medical diagnosis, teaching demonstration, exhibition and the like.

The invention discloses a spine joint for artificial cervical disc replacement. The spine joint is characterized by comprising an upper vertebral joint movable plate (1) and a lower vertebral joint movable block (2). A middle elastic supporting component (3) is arranged between the upper vertebral joint movable plate (1) and the lower vertebral joint movable block (2); the lower end face of the upper vertebral joint movable plate (1) makes sliding contact with the upper end face of the middle elastic supporting component (3), the upper end face of the lower vertebral joint movable plate (2) makes sliding contact with the lower end face of the middle elastic supporting component (3), and the upper vertebral joint movable plate (1) and the lower vertebral joint movable plate (2) adopt the middle elastic supporting component (3) as supporting to relatively slide along the surface of the middle elastic supporting component (3); the upper surface of the upper vertebral joint movable plate (1) and the lower surface of the lower vertebral joint movable plate (2) are each provided with a plurality of top friction protrusions (11). According to the spine joint for artificial cervical disc replacement, the artificial spine supporting force is large, and the service life is long.

The invention discloses an assembled cervical interbody fusion cage, and belongs to the field of spine fusion instruments. The device comprises an H-shaped supporting piece used for providing a supporting function and side wall connecting pieces, wherein the H-shaped supporting piece comprises a first supporting rod, a second supporting rod and a longitudinal connecting rod, the two ends of the first supporting rod are each provided with a first connecting piece, and the two ends of the second supporting rod are each provided with a second connecting piece; the two ends of the longitudinal connecting rod are connected with the first supporting rod and the second supporting rod into a whole, and an I-shaped supporting piece formed by the first supporting rod, the longitudinal connecting rodand the second supporting rod is in an H-like shape. Practical application results show that on the basis of the new structural design, uncovertebral joint bone grafting can be achieved, the fusion rate can be effectively increased, the bone grafting side uncovertebral joint fusion rate is higher than the non-bone-grafting side uncovertebral joint fusion rate, so that remarkable progressive significance is achieved. Meanwhile, based on the improvement of the structure, corresponding choices can be made for different patients, so that the optimal clinical effect and the maximum fusion are ensured.

The invention relates to the technical field of interbody fusion cage medical instruments, in particular to a four-way expanding interbody fusion cage. The interbody fusion cage is characterized by being composed of a four-way expanding fusion mechanism and a driving spreading mechanism, the four-way expanding fusion mechanism is composed of an upper front spreading plate, a lower front spreadingplate, an upper rear spreading plate and a lower rear spreading plate, the upper front spreading plate is composed of a front side plate and an upper side plate, the lower front spreading plate is composed of a front sliding plate and a lower sliding plate, the upper rear spreading plate is composed of a rear sliding plate and an upper sliding plate, and the lower rear spreading plate is composedof a rear side plate and a lower side plate. The four-way expanding interbody fusion cage has the advantages that by utilizing the spreading force of the interbody fusion cage, the height and tensionof the vertebral joints are restored, the compression is relieved, the physiological curvature of the spine is restored, and the stable four-way expansion of the spine is ensured through the bone fusion of the interbody fusion cage.

A prosthetic device can be used as a prosthesis following a discectomy or a corpectomy. The prosthetic device includes two endplates with staggered motion limiting members. The device can be configured to allow six degrees of motion when comparing one endplate relative to the other. The endplates can be configured to fix the joint by changing the body held within the device and by adding a locking plate and fasteners. A method teaches how to insert a device to an intervertebral space via an anterior incision.

A partial endoprosthesis device preserves the motion of a vertebral joint for implant into a spinal segment and includes an articular portion having a thickness that increases in the direction of introduction between the articular facets. The articular portion is elongated along a longitudinal axis with a opposite first and second faces. The first face has a central protrusion that is configured so that, by implanting the device with the articular portion inserted between an upper articular facet of a lower vertebra and a corresponding lower articular facet of upper vertebra adjacent to the lower vertebra, and with the first face in contact with either the upper or lower articular facet, and with the second face in contact with the other articular facet, the articular portion, with the first face, pushes against the first articular facet and finally becomes integral by osteointegration with the lower articular facet.