32 results about "Vertebroplasty procedure" patented technology

A device for injecting bone cement is provided. The device has a flexible delivery tube and a flexible plunger.

A remotely-activated injection device for use in vertebroplasty is provided to inject a flourescent probe material into a patient. The injection device includes a pump defining an injection chamber having an exit opening; an actuator; and a cable having a first end coupled to the actuator, and a second end remotely engaging the pump. The actuator remotely controls the pump by responsive movement of the cable to thereby cause injection of a flourescent probe material from the injection chamber of the pump through the exit opening to the patient.

The present invention relates in certain embodiments to medical devices for treating vertebral compression fractures. In one embodiment, the invention relate to instruments and methods for introducing fill material into a vertebral body that slowly expands vertebral height without explosive balloon expansion as in kyphoplasty. The system provides a fill material that infills a vertebra without flowable bone cement as used in kyphoplasty and vertebroplasty procedures. Thus, the bone fill system prevents the possibility of extravasation of material into the spinal canal which occurs in a significant number of kyphoplasty and vertebroplasty procedures. An energy source can apply energy to a substantially rigid implant material in order to soften, melt, or fracture the implant material to infill a vertebral body.

The present disclosure relates to bone cement formulations that have an extended working time for use in vertebroplasty procedures and other osteoplasty procedures together with cement injectors that include energy delivery systems for on-demand control of cement viscosity and flow parameters. The bone cement formulations may include a liquid component having at least one monomer and a non-liquid component including polymer particles and benzoyl peroxide (BPO). The non-liquid component may be further configured to allow controlled exposure of the BPO to the liquid monomer so as to enable control of the viscosity of the bone cement composition.

The subject matter of the invention is a curable composition for use as bone cement, in particular for augmentation of osteoporotic bone tissue, comprising at least one organic polymer and at least one monomer for radical polymerisation, at least one particulate inorganic additive having a BET surface of at least 40 m2/g, whereby the additive comprises covalently bound hydroxyl groups, whereby the composition further comprises at least one fatty acid ester or a mixture of fatty acid esters. Another subject matter of the invention is the use of said composition for augmentation of osteoporotic bone tissue and particularly preferably for vertebroplasty, kyphoplasty, and augmentation of drill holes in osteoporotic bone tissue, as well as a kit for producing said composition.

The invention discloses a vertebroplasty bone cement leakage detection method and system and a storage medium. The vertebroplasty bone cement leakage detection method comprises the following steps: acquiring a vertebroplasty X-ray image for marking contour key points and whether bone cement leaks or not in advance; for a pre-collected X-ray image, constructing a data set according to the marked contour key point position information and an identifier for identifying whether bone cement leaks or not; constructing two neural networks based on an ImageNet pre-training model, using the first neural network for learning vertebra contour information through language, and using the second neural network for learning bone cement contour coordinate information; solidifying the model parameters of the two neural networks, outputting the output values of the two models to an SVM classifier, and learning whether bone cement leakage occurs or not. Compared with manual detection, the prediction timeis greatly shortened, and the problem that the consistency of detection results is poor due to the fact that manual detection of doctors depends on experience of the doctors is solved.

The invention discloses an automatic boosting device and system for injecting bone cement in the vertebral plasty. The automatic boosting device for injecting the bone cement in the vertebral plasty comprises a traction clamp capable of being clamped on a pushing rod, a positioning clamp capable of being clamped on an injection pipe and a fixing clamp capable of being clamped on a drivepipe for forming an operation work passage, wherein one end of a traction line is fixed to the traction clamp, and the other end of the traction line penetrates through a passage hole in the positioning clamp and then extends to be connected with a control end; an adjustment piece is connected between the positioning clamp and the fixing clamp. The automatic boosting device for injecting the bone cement in the vertebral plasty can be directly clamped on an existing manual bone cement injecting device, realizes control over injection of the bone cement remotely, enables doctors to be out of a radiation environment, and prevents radiation injuries to the health. The automatic boosting device for injecting the bone cement in the vertebral plasty is simple in structure, low in cost, directly clamped on the existing manual bone cement injecting device to be used in a matched mode, easy and convenient to operate and easy to popularize, and does not change the existing operation method and the traditional operation instructions of doctors.

The invention discloses a vertebroplasty body surface positioning navigating instrument. The instrument comprises a base which can be fixed to an operating table/DSA machine tool, a main rod which is connected to the base and has lifting motion relative to the base, a main rod upper cover, a threaded rod which adjusts the lifting of the main rod, an angle fixing ring which is embedded in the main rod and rotates relative to the main rod, a locating rod which is connected to the angle fixing ring and has a concertina movement relative to the angle fixing ring and a locating ring which is connected to the locating rod and has a rotary movement relative to the locating rod; a groove is formed in the inner side of the base, and the length and the width of the groove are matched with those of a connecting rod of the side face of the operating table/DSA machine tool; the vertebroplasty body surface positioning navigating instrument is cheap in design and can be sterilized, accurate positioning of pedicle of vertebral arch can be conducted by an external mechanical type navigating instrument which is applied to an operation, operative complications can be reduced, operative difficulties can be lowered, operative learning curves can be reduced, and the therapeutic efficiency is improved.

The invention belongs to the field of medical instruments, and particularly relates to a balloon for vertebroplasty and a medical device. The balloon provided by the invention comprises a compressed,collapsed or folded balloon main body; the balloon main body is internally provided with a first cavity; the first cavity is used for injecting bone cement, the bone cement is filled to enable the balloon to be supported between intervertebral disc tissues after being expanded and solidified, and the balloon can prevent the problem of leakage and dispersion of the bone cement; after the balloon main body is expanded, a second cavity penetrating through the balloon main body is formed; the second cavity is used for injecting a material with an osteogenesis effect and/or an osteoinduction effect, and after the balloon is expanded through bone cement filling, the material with the osteogenesis effect and/or the osteoinduction effect is injected into the second cavity penetrating through the balloon main body through a second injection opening; and the material injected into the second cavity forms osteoblasts in the intervertebral disc inner cavity or induces local cells of a human body to differentiate to form the osteoblasts, so that the balloon is firmly anchored between intervertebral discs.

The invention discloses vertebral body reinforced calcium phosphate bone cement, which has good compressive strength, collapse resistance and osteogenesis induction effect, and can avoid pulmonary embolism caused by collapse in vertebroplasty. The technical scheme of the invention is as follows: the calcium phosphate bone cement comprises solid-phase powder and curing liquid; the solid-phase powder comprises the following components in parts by weight: 90-100 parts of calcium phosphate powder, 5-10 parts of absorbable fibers, 10-20 parts of bone morphogenetic protein-loaded quaternary ammoniumsalt-73 bentonite and 10-30 parts of a developing agent; and the curing liquid comprises the following component in parts by weight: 20-40 parts of a buffer solution. Bentonite is modified by using low-concentration bone morphogenetic protein, and quaternary ammonium salt has positive ions, so that protein binding sites are formed, the bone morphogenetic protein is not easily taken away by body fluid after being combined with the bentonite, and the concentration of the bone morphogenetic protein in the bone cement is not reduced along with time. The toxicity can be reduced, the cost can be reduced, and the bone cement is suitable for wide popularization and application.

An integrated injection implementation method and a device of an injectable bone substitute in vertebral body forming belong to the field of medical instruments. A memory alloy guide pin is inserted into a hollow tube for thermal presetting, the hollow tube and the memory alloy guide pin are integrally and synchronously pushed into a vertebral body, the hollow tube is rapidly rebounded to the original curvature through internal stress under the guidance of the memory alloy guide pin, and the boundary of an injectable bone substitute filling space or a boundary fence serving as the filling space is formed; an injectable bone substitute is injected to a specified position through the hollow tube; and the hollow tube and a filling space defined by the hollow tube are filled with the injectable bone substitute at a specified part in the vertebral body. The injection area of the injectable bone substitute has plannability, and multiple steps of operations such as puncture, distraction, implant and bone cement injection, forming and the like in the vertebroplasty are integrally achieved. And all the steps are synchronously carried out, so that the operation process is greatly optimized,the operation time is shortened, and the operation difficulty is reduced. The method can be widely applied to the field of design and manufacturing of orthopedic implant injection devices.

The invention relates to a GeneX bone cement and PMMA (polymethyl methacrylate) combined vertebroplasty. The GeneX bone cement and PMMA combined vertebroplasty comprises a separation device, a puncture assembly and a balloon dilatation assembly. The separation device comprises an air bag which is of a disc-shaped structure after being inflated and a pipeline used for inflating the air bag. A dilatation balloon arranged in the balloon dilatation assembly is of a coronal structure. The vertebroplasty has the advantages that advantages and disadvantages of the GeneX bone cement and the PMMA bone cement are combined and complemented for use, so that micro-fracture caused by extrusion of cancellous bones around the bone cement can be reduced, and the long-term stable maintenance effect of the post-operation centrum height is realized; and by designing the dilatation balloon in the prior art into the coronal structure, the whole high-viscosity PMMA bone cement is more matched with a vertebral body, so that the bowling effect of the high-viscosity PMMA bone cement is solved, the relative stable effect between the injected bone cement and the vertebral body is improved, and micro-fracture caused by extrusion of bone trabecula is avoided.

The invention relates to the technical field of medical devices, in particular to a turning-over device suitable for vertebroplasty. The turning-over device comprises a turning-over device body and a turning-over pad connected with the turning-over device body through a connecting rod. A plurality of grooves are transversely formed in the turnover device body; the turning-over pad comprises a U-shaped pad, a concave pad and a protective pad, and the connecting rod is sequentially connected with the U-shaped pad, the concave pad and the protective pad; pain of a patient is relieved, time is saved, and secondary fracture of the patient is avoided.

The invention discloses a transpedicular channel vertebral body excision device, which comprises a drill bit, a transmission connecting part and a handle part which are connected in sequence, and thedrill bit can freely rotate and bend relative to the transmission connecting part; a first transmission assembly and a second transmission assembly are arranged in the transmission connecting part, the first transmission assembly is connected with drill bit and drives the drill bit to rotate on the transmission connecting part, and the second transmission assembly is connected with the drill bit and drives the drill bit to adjust the bending angle between the drill bit and the transmission connecting part. The transpedicular channel vertebral body excision device can excise most of the diseased vertebral body through the transpedicular channel in eggshell mode, and refill bone cement for vertebroplasty to reconstruct the stability of the spine, which has small trauma , low risk and low cost, and huge social benefits.

The invention discloses a percutaneous support-dilated bone-scraped vertebral body shaping device and relates to the technical field of medical appliances. The device comprises a targeting screw, a dilated support, an inner sleeve and an outer sleeve; a screw rod of the targeting screw is a hollow rod body with external threads, one target hole and a plurality of leak holes are formed in the circumferential surface of the screw rod, and a through hole communicating with a cavity of the screw rod is formed in a screw cap of the targeting screw; the dilated support is composed of a plurality ofelastic dilated reticular pipes with reticular pipe walls, both the inner sleeve and the outer sleeve are elastic pipe bodies, the outer sleeve can be inserted into the internal cavity of the screw rod of the targeting screw, the inner sleeve can be inserted into a pipe cavity of the outer sleeve, and the dilated support can be radially compressed and then inserted into a pipe cavity of the innersleeve; and the inner sleeve is provided with two symmetrical-distributed direction control lines which are used for controlling the front end of the inner sleeve to be directed to a target. The device provided by the invention is applied to vertebroplasty.

The invention provides a remote bone cement injection device for vertebroplasty. The remote bone cement injection device comprises a vacuum air exhaust assembly, a stirring assembly, a pushing injection assembly, an adsorption assembly, a supporting assembly, an injection point adjusting assembly and an injection needle assembly. The vacuum pumping assembly, the stirring assembly, the pushing and injecting assembly and the control assembly are connected with the mounting end of the pushing and injecting platform, the mounting end of the adsorption assembly is connected with the first end of the supporting assembly, and the second end of the supporting assembly is connected with the first end of the injecting point adjusting assembly. The second end of the injection point adjusting assembly is connected with the output end of the pushing injection assembly through the injection needle assembly, the gas output end of the stirring assembly is connected with the first input end of the vacuum pumping assembly, and the bone cement output end of the stirring assembly is connected with the input end of the pushing injection assembly. The gas output end of the adsorption assembly is connected with the second input end of the vacuum pumping assembly. The device integrates the functions of stirring, injection point adjustment, bone cement state monitoring and remote injection, is rich in function, and brings convenience to surgeries of doctors.