28 results about "Cranium bone" patented technology

A system of robotic surgery includes components capable of drilling a bore in the cranium of a patient in connection with craniotomy and other cranial surgeries. A perforator associated with such system is controlled by suitable computer-implemented instructions to maintain the perforator tip along a desired trajectory line while moving the perforator bit at locations proximal to such perforator tip in a circular motion, thereby imparting a conical oscillation to the perforator bit relative to the trajectory line. The angle at which the perforator bit is oscillated relative to such trajectory line results in the bore formed in the cranium having a diameter larger than the bit diameter, and the larger diameter and related conical oscillation is selected so as to reduce frictional force opposing withdrawal of the bit from the situs of the bore, thereby reducing the risk of jamming of the bit during its associated operations.

The present disclosure is directed to an expandable medical implant for the repair of cranium defects in adolescent patients. The implants of the present disclosure can include a plurality of interconnected links that are movable with respect to each other as the underlying cranium grows and expands.

A cranial lead fixation device includes a body configured for fixation to a cranium over or within a burr hole, and a fixation mechanism associated with the body. The body and fixation mechanism capture a medical device (e.g., a lead, catheter, or similar device) within a fixation channel of the cranial lead fixation device for protection of the burr hole and securement of the medical device. The cranial lead fixation device is operable for a first open configuration and a second closed configuration.

The application discloses a kind of biomimetic silk fibroin cartilage scaffolds for cranium defect repair, belong to biomedical engineering technical field.To solve the problem of single structure, low bone formation efficiency and mismatching of mechanical properties and degradation rate of existing cranium repair scaffold, the application provides a kind of scaffold, which includes in order from outside to inside: biomimetic periosteum layer, bone conduction and vascularization layer and cartilage induction layer.Biomimetic periosteum layer is dense nanofiber membrane structure, and plays the role of physical barrier and osteoinduction;Bone conduction and vascularization layer is gradient porous structure with gradually decreasing aperture from outside to inside, aiming to guide the ordered growth of blood vessels and cells, and promote rapid vascularization;Cartilage induction layer is sponge-like microporous structure, used for forming stable cartilage template and starting endochondral ossification.The application simulates the natural bone healing process through structural biomimicry and functional zoning, synergistically promotes vascularization and osteogenesis, and realizes efficient biological repair of cranium defect.

A non-fixed implant is proposed, which is made of raw materials including a biomaterial, a ceramic matrix composite with excellent osteoconductivity, and a polymer. The non-fixed implant can be precisely fixed to the gap between the skull and the bone flap and can be conveniently used. A method for manufacturing the non-fixed implant is also proposed. The non-fixed implant includes a flexible wedge that can be deformed to conform to the outer contour of the bone flap, and a plurality of wings connected to the upper or lower part of the flexible wedge and extending to both sides of the flexible wedge. The wings have a porous structure. The wings on one side will be located on the bone flap, while the wings on the other side will be located on the skull. The non-fixed implant has the following advantages: it can precisely fill the defect formed by craniotomy, has improved biocompatibility and osteointegration ability, and allows tissue invasion.

The application provides a 3D printing interlayer reinforcing forming method for cranium defect repair, and belongs to the technical field of 3D printing and medical implant manufacturing. The steps are as follows: 1. Based on the medical imaging data of the cranium defect area of a patient, a personalized three-dimensional model that is adapted to the anatomical structure of the bone defect area is constructed, and path data for 3D printing is generated; 2. The selected medical-grade polymer material is heated in a differentiated temperature control manner by setting different temperature control areas through a 3D printing device; 3. The 3D printing device synchronously extrudes and deposits materials in different states along the preset path direction through a double-nozzle structure, and finally forms an entity that is matched with the structure of the bone defect area; 4. The surface of the printed part is cleaned and dried at low temperature, and sterilization and sterile packaging are performed according to the medical use requirements. The application can significantly improve the tightness of interlayer bonding without affecting the printing efficiency.

An implant (X) for supporting an upper-jaw dental prosthesis (Z) on the cranial bone (S), wherein the implant (X) has a receiving portion (ZA) for receiving the upper-jaw dental prosthesis (Z), and also a plurality of fastening portions (B1, B2, B3, B4), wherein the fastening portions (B1, B2, B3, B4) are connected to the receiving portion (ZA) and have at least one through-hole (DL) for receiving a fastening screw (BT), wherein the fastening portions (B1, B2, B3, B4) are formed at least by a first fastening portion (B1), a second fastening portion (B2) and a third fastening portion (B3), wherein the first fastening portion (B1) is designed to anchor the implant (X) on the lateral cranial base (S1), and wherein the second and third fastening portions (B2, B3) are designed to anchor the implant (X) on one of the following three cranial bone portions (S2, S3, S4): the pterygoid process (S2), the zygomatic bone (S3), and the maxilla (S4).

An assembly comprising a cranioplasty prosthesis component having a connection hole(s). A pivot fastener may have a body being threaded and adapted to be screwed to cranium bone. A shoulder is between the body and a head of the pivot fastener, the shoulder having a circular section. A diametrical dimension of the circular section is less than a diametrical dimension of the connection hole, such that the shoulder forms a rotational joint with the cranioplasty component when the shoulder is in the connection hole.

A device for implant in a hole in cranium relative to a bone table includes a can having an electrical-contact pad. The can has a perimeter edge defining a boundary, and a recessed portion with an upper surface positioned to lie beneath the bone table when the can is placed in the hole. The device also include a cover assembly that couples to and decouples from the can at the electrical-contact pad. A strain relief system includes a lower strain relief and an upper strain relief. The lower strain relief defines channels that receive a portion of a lead and includes a curved portion that extends upward from the upper surface of the recessed portion to the bone table, and a linear portion that extends from the curved portion to an end beyond the perimeter edge. The upper strain relief couples to and decouples from the can and / or the lower strain relief.

A cranial remodeling orthosis (CRO) device for shaping an infant's deformed head shape as the infant's head grows includes an interior surface configuration based upon a modified shape derived from the deformed head shape. The interior surface comprises hold areas to restrain growth of said infant's head. The hold locations and amounts are determined from the modified shape. The interior surface also comprises one or more second areas providing growth room for the infant's head. The second areas are determined from the modified shape. At least one of the second areas is configured to provide extra growth room for the infant's head. Trimlines are provided and the trimlines are used to define the second areas.

A device for measuring parameters associated with concussions due to impacts to the head of a person using a mouthpiece with a sensor that is configured to contact one or more bones of a person's face, such as the maxilla bone. The device may include a number of inflatable air pockets to aid in retaining the position of the sensor. The device may further include a sensor that contacts the exterior of a person's cranium and a communication module for transmitting the sensor readings. The device may be hinged in such a way that users may still easily talk and breathe.

This invention relates to a prosthesis for implantation into bone defects. Specifically, it discloses a cranioplasty component, comprising: a bone flap body for filling a defect in the skull, the bone flap body including a disc-shaped filling body and multiple stimulation units arranged circumferentially between the outer and inner disc surfaces of the filling body, and each stimulation unit being capable of protruding from the sidewall of the filling body through radial movement; a force-applying component for driving each stimulation unit to protrude radially from the sidewall of the filling body, thereby, after the bone flap body fills the defect, the force-applying component drives each stimulation unit to protrude from the sidewall of the filling body, causing the radially outer ends of the stimulation units to press against the sidewall of the defect to stimulate the bone of the sidewall of the defect; and a positioning component for attaching and positioning the bone flap body to the skull.

A cranial remodeling orthosis (CRO) device for shaping an infant's deformed head shape as the infant's head grows includes an interior surface configuration based upon a modified shape derived from the deformed head shape. The interior surface comprises hold areas to restrain growth of said infant's head. The hold locations and amounts are determined from the modified shape. The interior surface also comprises one or more second areas providing growth room for the infant's head. The second areas are determined from the modified shape. At least one of the second areas is configured to provide extra growth room for the infant's head. Trimlines are provided and the trimlines are used to define the second areas.

The invention provides a prefabricated PEEK bone plate for trigeminal neuralgia and facial spasm craniotomy. The prefabricated PEEK bone plate comprises a bone plate body made of a PEEK material, and the bone plate body comprises a repairing bone plate, a resectable guide plate and a structural connecting rod; a guide hole is formed in the middle of the resectable guide plate, the repairing bone plate is arranged in the guide hole, a plurality of structural connecting rods are arranged on the edge of the top face of the repairing bone plate at intervals, the repairing bone plate is connected with the resectable guide plate through the structural connecting rods, and a plurality of nail holes are formed in the plate face of the resectable guide plate. The nail holes are located in the plate face of the resectable guide plate on the periphery of the guide hole at intervals, and a guide gap located in the edge of the guide hole is formed between the repairing bone plate and the resectable guide plate. According to the prefabricated PEEK bone plate, skull repair can be completed during a first craniotomy, the situation that a patient waits for several months to conduct a second operation after the operation is reduced for craniotomy treatment of trigeminal neuralgia and facial spasm, the operation efficiency can be improved, and the treatment cycle of the patient is shortened.

The invention provides a craniotomy saw, and relates to the technical field of craniotomy tools, in order to solve the problem that in the prior art, in a craniotomy operation, a complete bone flap of a drilled hole cannot be reserved, the craniotomy saw comprises a driving part, an eccentric shaft, a swing part, a main shaft and a first saw barrel, one end of the main shaft is connected with the swing part, the other end of the main shaft is in transmission connection with the first saw barrel, and the power output end of the driving part is in transmission connection with the eccentric shaft. The eccentric shaft is in transmission connection with the swing part and can drive the swing part to swing, and the swing part can drive the first saw barrel to rotate synchronously through the main shaft. By means of the craniotomy saw, the cut skull can be completely reserved and can be completely put back subsequently, the skull is recovered as early as possible, and cost is saved.

The application discloses a bone drill feeding amount control device for craniotomy, which comprises a symmetrical base, an arc-shaped track installed on the base, and the feeding amount control device slidingly arranged on the arc-shaped track, a second clamping assembly on the arc-shaped track, an adjusting mechanism fixedly arranged on the second clamping assembly, and an electric drill for drilling bone drivenly connected with the adjusting mechanism, and a guide rod arranged between the second clamping assembly and the electric drill, so that the electric drill always reciprocally slides along the guide rod under the action of the adjusting mechanism. The electric drill can be deflected on the foot side of the patient's head and deflected left and right through the simple screw rod mechanism and the arc-shaped track, and various required angles are met, so that the drilling angles in the existing craniotomy can be effectively fixed, and the drilling head feeding amount can be arbitrarily controlled at any time through the adjusting mechanism, and the brain tissue damage caused by drilling inertia is eliminated.

A device for measuring parameters associated with concussions due to impacts to the head of a person using a mouthpiece with a sensor that is configured to contact one or more bones of a person's face, such as the maxilla bone. The device may include a number of inflatable air pockets to aid in retaining the position of the sensor. The device may further include a sensor that contacts the exterior of a person's cranium and a communication module for transmitting the sensor readings. The device may be hinged in such a way that users may still easily talk and breathe.

The invention discloses a bionic silk fibroin cartilage scaffold for skull defect repair, and belongs to the technical field of biomedical engineering. In order to solve the problems that an existing skull repair stent is single in structure, low in osteogenesis efficiency and unmatched in mechanical property and degradation rate, the invention provides a stent which sequentially comprises a bionic periosteum layer, a bone conduction and vascularization layer and a cartilage induction layer from outside to inside. Wherein the bionic periosteum layer is of a compact nanofiber membrane structure and plays a role in physical barrier and osteogenesis induction; the bone conduction and vascularization layer is of a gradient porous structure with the pore diameter gradually reduced from outside to inside and aims at guiding blood vessels and cells to grow in orderly and promoting rapid vascularization. The cartilage induction layer is of a spongy microporous structure and is used for forming a stable cartilage template and starting osteogenesis in cartilage. By means of structural bionic and functional partition, the natural bone healing process is simulated, vascularization and osteogenesis are promoted in a synergistic mode, and efficient biological repair of skull defects is achieved.

Temporomandibular joint prosthesis (90, 902) comprising a first element (30, 302) attachable to a first side of the mandible (40) and a second element (80, 802) attachable to the first side of the cranium (50), wherein a condylar head (42, 422) is formed at one end of the first element (30, 302), wherein an articular surface (82) is formed on the second element (80, 802) which forms a counter-bearing of the condylar head (42), wherein the condylar head (42, 422) and the articular surface (82, 822) predefine an axis of rotation (A1, A2), wherein the first element (30, 302) and the second element (80, 802) are shaped such that the axis of rotation (A1, A2) is pre-oriented obliquely to a frontal plane (F) of the patient in the implanted state. as well as kit (K) consisting of two such temporomandibular joint prostheses (90, 902).

This invention relates to a bone cement injection device for cranioplasty, comprising an outer sheath, injection structures, and an external pusher. The outer sheath has an axially extending push channel within it. The sheath wall has a first group of holes and a second group of holes symmetrically distributed 180° circumferentially, each group containing multiple through holes arranged at equal intervals axially. Two symmetrically arranged injection structures correspond to the first and second groups of holes, respectively. Each injection structure includes: an injection tube inserted into the push channel, containing an axially extending infusion channel, the infusion channel being open at its proximal end and closed at its distal end; and multiple rigid pins arranged at equal intervals axially along the injection tube and penetrating the sidewall of the injection tube at the same circumferential angle, the inner end of each pin communicating with the infusion channel. This device effectively fills the repair block with bone cement, improving the outcome of cranioplasty.

Proposed is a non-fixing implant made of a raw material including a biomaterial and a ceramic-based composite material having excellent osteoconductivity in addition to a polymer. The non-fixing implant can be accurately secured to a gap between the skull and the bone flap and can be conveniently used. Further proposed is a method of manufacturing the non-fixing implant. The non-fixing implant includes a flexible wedge deformable to conform to the external contour of the bone flap and a plurality of wings connected to an upper or lower portion of the flexible wedge and extending to both sides of the flexible wedge. The wings have a porous structure. The wings on one side will be positioned on the bone flap and the wings on the other side will positioned on the skull. The non-fixing implant has the advantage of being capable of accurately filling a defect formed by craniotomy, has improved biocompatibility and bone bonding ability, and allows tissue invasion.

An assembly comprising a cranioplasty prosthesis component having a connection hole(s). A pivot fastener may have a body being threaded and adapted to be screwed to cranium bone. A shoulder is between the body and a head of the pivot fastener, the shoulder having a circular section. A diametrical dimension of the circular section is less than a diametrical dimension of the connection hole, such that the shoulder forms a rotational joint with the cranioplasty component when the shoulder is in the connection hole.

A cranium bracing system includes a strut mount adapter and a bracing strut, wherein the strut mount adapter is adapted to connect the bracing strut to a cranium hole base member which is rigidly connected to a patient's cranium. The strut mount adapter includes a first connecting section with one or more engaging members configured to engage with the correspondingly formed cranium hole base member to fixedly connect the strut mount adapter to the cranium hole base member. The strut mount adapter further includes a second connecting section configured to engage with a correspondingly formed connecting section of the bracing strut to connect the strut mount adapter to the bracing strut, and a passage extending through the strut mount adapter and having a first passage opening at the first connecting section and an opposed second passage opening.

Provided is a surgical method. The method includes detecting a location of a reference unit having a trackable element with a detector, the detector configured to provide at least one signal corresponding to a detected location of at least the reference unit's trackable element; accessing a computer-readable reconstruction of the being's anatomy; accessing a computer-readable reconstruction of an implant; detecting a location of a pointer tool comprising a trackable element with the detector, where the pointer tool is associated with a location of an anatomical feature of interest; accessing at least one computer-readable reconstruction of a trace, the trace corresponding to a geometry of the anatomical feature of interest; and superimposing the at least one updatable, computer-readable trace on the second computer-readable reconstruction of the implant.

An implantable mandibular joint prosthesis includes a first implant part that has an artificial condyle that can be attached to a lower jawbone, a second implant part that has a joint surface that can be attached to a cranium and that forms an abutment for the artificial condyle The second implant part comprises includes a first component which is formed from a metal material and can be attached to the cranium, and a second component which is formed from a plastics material and forms the joint surface. The first component has a first connection surface and the second component has a second connection surface, wherein the first and second connection surfaces are mutually engagingly joined together.

Disclosed is a craniotomy milling system, which includes a computer numerical milling machine having a spindle configured to be positioned relative to a craniotomy location of a cranium of a patient and an end mill. The craniotomy milling system includes a controller for controlling the feed rate of the end mill. The craniotomy milling system includes an impedance measurement system and an axial force sensor. The craniotomy milling system includes a processor electrically coupled with a controller, the impedance measurement system, and the axial force sensor. The processor is configured to send a signal to the controller to change the feed rate of the end mill in response to a change in impedance or a change in axial force.

The invention provides a multi-layer structure skull repair scaffold and a preparation method and a preparation process optimization method thereof, and relates to the technical field of skull repair scaffolds.The preparation method comprises the steps that CT and nuclear magnetic resonance scanning are carried out to obtain a defective skull tissue three-dimensional structure model; constructing a multi-layer structure skull repair scaffold structure reference model, wherein the multi-layer structure skull repair scaffold structure reference model comprises an external metal supporting layer, an internal biological ceramic degradation regeneration layer and a middle transition interface layer; the topological optimization is combined with extrusion simulation, printing simulation and sintering simulation for joint optimization; 3D printing slurry is prepared by adopting an extrusion 3D printing technology for printing to obtain a skull repair stent printing body with a multi-layer structure; and performing vacuum drying, vacuum sintering and cooling to obtain the skull repair stent with the multi-layer structure. Two materials of metal and ceramic are combined, and the outer-layer metal frame provides initial strength, rigidity and reliable fixing capacity required by an operation; the porous degradable biological ceramic on the inner layer creates a microenvironment beneficial to the generation of new bones, and finally the biodegradation of the scaffold and the in-situ regeneration of bone tissues are realized.

The utility model belongs to the technical field of medical instruments, and particularly relates to skull drilling equipment for craniocerebral dissection. The skull drilling equipment for the craniocerebral dissection is good in positioning effect and has a skull scrap collecting function. The device comprises a shell, and is characterized in that a guide pipe is fixedly arranged on the shell, and an arc-shaped surface is arranged at the end part of the guide pipe; a sliding seat is also arranged in the shell; one side of the sliding seat is connected with a feeding motor at the end part of the shell; a driving motor is arranged on the other side of the sliding seat, a drill bit is arranged on the driving motor, and the drill bit corresponds to the central through hole of the arc-shaped surface; a dust suction opening is formed in the arc-shaped face and connected with a dust suction device on the guide pipe.