242results about "Skull" patented technology

According to the in-situ printing track planning method provided by the invention, an integrated point cloud data processing flow is designed after 3D scanning, so that manual intervention is reduced; the LSCM algorithm and the ARAP algorithm are respectively utilized to carry out plane parameterization and dimension reduction on the three-dimensional triangular mesh so as to reduce the implementation difficulty and improve the path planning efficiency, and the two methods are mutually verified so as to ensure the parameterization effect; solving a grid correspondence problem by utilizing vertex topology uniqueness, and designing a dynamic reasoning mechanism, namely, when fingerprints are not completely unique, gradually deducing to global correspondence through limited vertex corresponding information in a triangle to adapt to uncertainty of defective grid information; a defective skull layering path is integrally generated through input bone tissue parameters and curved surface defect grids, and the structural characteristics of an original skull are simulated. The whole process of the method from point cloud preprocessing to path generation is automatic, intervention is reduced, response is quick, adaptation individuation is improved, and skull tissue function recovery is promoted through bionic design.

The invention relates to a bone cement injection device for skull repair. The bone cement injection device comprises an outer sheath tube, a separate injection structure and an outer push rod, a pushing channel extending in the axial direction is formed in the outer sheath tube, the tube wall of the outer sheath tube is provided with a first hole group and a second hole group which are symmetrically distributed by 180 degrees in the circumferential direction, and each hole group comprises a plurality of via holes arranged at equal intervals in the axial direction; the two symmetrically-arranged separated injection structures are arranged corresponding to the first hole set and the second hole set respectively, each separated injection structure comprises a separated injection pipe, the separated injection pipe is inserted into the pushing channel, a perfusion channel extending in the axial direction is arranged in the separated injection pipe, the near end of the perfusion channel is through, and the far end of the perfusion channel is closed; the rigid contact pins are arranged at equal intervals in the axial direction of the separate injection pipe and penetrate through the side wall of the separate injection pipe at the same circumferential angle, and the inner end of each contact pin is communicated with the perfusion channel. The repairing block can be effectively filled with bone cement, and the effect after skull repairing is improved.

Orthopedic implants and related surgical methods for using same. The implants have suture bore geometries that facilitate performance of the surgical methods, thereby providing for improved optimal biomechanical force application in various anatomies. The implants include suture bores that have an angled / diagonal, or skewed, orientation within the anatomical planes (lateral / sagittal and frontal / coronal). The suture bores have the skewed orientation so that the adjacent soft tissues (i.e., tendons or ligaments) can be advanced via the suture therethrough in superior-inferior and inferior-superior directions. Openings, or holes, at the ends of the suture bores are configured to approximate the adjacent associated soft tissue to the implant.

The invention relates to the technical field of peek skull defect repair, in particular to a skull defect repair structure based on structural reconstruction of a peek skull repair material, which comprises a repair patch, a plurality of hourglass-shaped pore channels are formed in the surface of the repair patch, the diameter of the port of a horn-shaped concave groove is larger than that of the tail of the horn-shaped concave groove, the diameter of the port is 1.5 mm, the diameter of the tail of the horn-shaped concave groove is 0.05 mm, and the diameter of the hourglass-shaped pore channels is 1.5 mm. The hourglass-shaped hole channel is designed to be in an hourglass shape with two wide ends and a slender channel, the contact area between the two ends of the hole channel and healthy skull tissue is increased, growth, climbing and combination of granulation tissue are facilitated, meanwhile, attachment, adhesion and healing of soft tissue inside and outside a growth promoting layer repairing material are facilitated, the integration degree of the implant is further improved, and the survival rate of the implant is increased. And the outer surface of the PEEK is covered with the convex structures, so that the contact area between the PEEK material and tissues can be increased, the growth and combination of the tissues are facilitated, and individualized design conforming to aesthetic plastic surgery, thickening design for supplementing temporal muscle atrophy space and mutual embedding of the PEEK material and the skull are carried out.

The present invention concerns a device (1) for restoring the integrity of the cranial bones, particularly of the non-resorbable type, comprising a plate body (3) in turn comprising a central body (5) and at least one peripheral portion (71), wherein said at least one peripheral portion (71) comprises fastening means (72) for fastening the device itself to the cranial bone (100), and wherein said cranial fixation device (1) comprises, at said central body (5), at least one insertion portion (50) protruding in a direction substantially orthogonal to said plate body (3) and which is configured to be inserted within a hole (102), drilled in the skull (100) of a patient, wherein said insertion portion (50) comprises a trabecular structure (51), suitable for stimulating bone regrowth and osseointegration of the device itself.

The invention relates to 3D printing medical equipment. The 3D printing type skull protective cap capable of enhancing protection comprises a protective cap body which is formed in a 3D printing mode and matched with a skull defect part of a patient, and a soft cushion arranged between the edge of the bottom of the protective cap body and the head tissue of the human body. The soft cushion is also formed in a 3D printing mode. According to the protective cap, the soft cushion is additionally arranged below the protective cap body, the stress condition of the contact face with the head soft tissue of the human body can be well improved through the soft cushion, and the installation stability and the protection reliability of the protective cap body are improved. Through the soft cushion, the processing error gap objectively existing between the head soft tissue of the human body and the protective cap main body can be filled, the contact effectiveness between the head soft tissue of the human body and the protective cap main body is ensured, the condition of abnormal stress or stress concentration is improved, and the risk that the protective cap main body is out of position when subjected to external force is reduced.

The present invention relates to a medical device manufactured using the additive manufacturing process (3D printing). It is a medical device used preferably as a bone graft composed of a porous structure based on bioceramics based on β-tricalcium phosphate (β-TCP) or hydroxyapatite, which may or not contain nanostructures in its composition, for example: carbon nanostructures (graphene, graphene oxide, reduced graphene oxide, carbon nanotubes, etc.) and, in preferred embodiments, stem cells and polymeric membrane. Also, the present invention relates to the use of this device as a bone graft and the process of preparing this device.

The present invention concerns an improved cranial prosthesis (1). According to the invention, such an improved cranial prosthesis (1) comprising a lamina (3), made of a biocompatible material, configured to replicate the course of the outer surface of the cranial bone to be restored, where said lamina (3) comprises a portion of removable lamina (5) suitable for allowing intracranial access (7).

A tibial implant may include a plurality of implant subunits. The implant subunits may be configured for individual insertion within a wedge-shaped-void of the tibia. The implant subunits may further be configured for assembly in order to provide an implant substantially covering an exposed portion of cortical bone formed when performing a surgical osteotomy. Methods and kits for insertion and assembly of implants are further described.

Implants and related methods for achieving dynamic fixation are disclosed. The implant comprises a head portion at a proximal end of the implant comprising external threads and a first axial through hole, and an anchor portion extending from the head portion at a distal end of the implant comprising external threads and a second axial through hole in communication with the first axial through hole. The implant further comprises a flexible constraint member extending within the first and second axial through holes comprising a first end portion coupled to the head portion and a second end portion coupled to the anchor portion. At least one of the head portion and the anchor portions forms a breakaway portion with aligned internal and external circumferential grooves configured to concentrate stress thereat such that the breakaway portion fractures via forces acting on the implant to separate the head and anchor portions.

The present invention relates to a guided bone regeneration device that is intended for the reconstruction of a buccal bone defect and is composed of an optionally micro-perforated smooth wall which is made of titanium and has a shape that covers said buccal bone defect.The present invention also relates to a process for manufacturing a device of the invention, comprising a step of constructing the device of the invention according to a three-dimensional representation obtained by means of a technique of maxillary-dental imaging of the bone defect.

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.

The invention discloses an automatic laser cutting method and system for skull repair, and the method comprises the steps: firstly obtaining the medical image data of a skull defect area of a patient, carrying out the three-dimensional modeling, then matching with a preset repair implant standard parameter library, determining the shape, size and edge contour of a repair implant, and carrying out the laser cutting of the repair implant. A laser cutting path is generated through a path planning algorithm and optimized, a laser head is driven to automatically cut the repairing material, and the cutting process is monitored in real time; the system comprises a medical image processing module, a three-dimensional modeling module, a path planning module, a laser cutting execution module, a real-time monitoring module and a postoperative evaluation module. Compared with the prior art, the method has the advantages that the medical image data processing precision is improved; personalized design is realized; optimizing a laser cutting path; and the real-time monitoring and adjusting capability is enhanced.

A method for providing a bending mold for an off-the-shelf implant, the method comprising obtaining information about a bony anatomy of a patient from one or more medical images; developing a virtual three-dimensional model of the bony anatomy based on the information about the bony anatomy, selecting an off-the-shelf implant, simulating a bending of the off-the-shelf implant using a three-dimensional model of the selected off-the-shelf implant and the virtual three-dimensional model of the bony anatomy to obtain a virtually bent implant having a first, bone-facing, surface and a second surface opposite the first surface, using the virtually bent implant, designing a bending mold mating with the first or the second surface, and based on the design of the bending mold, manufacturing the bending mold using additive manufacturing.

The invention relates to the field of medical instruments, and discloses a modular system tibia component which comprises a tibia support base body, a metal sleeve, a PE sleeve and a screw, the upper surface of the tibia support base body is of a polished type, a groove is formed in one side of the tibia support base body, a conical dovetail is arranged in the middle of the tibia support base body, and the metal sleeve is connected with the PE sleeve. A conical hole is formed in the top of the tibia support base body, the conical hole of the tibia support base body is used for being connected with a metal sleeve or a PE sleeve, a stand column is arranged at the bottom of the tibia support base body, a cavity is formed in the bottom of the stand column, and a first internal thread is arranged in the middle of the stand column. Through the combination of the conical dovetail, the conical hole and the stand column on the tibia support base body, the metal sleeve, the PE sleeve, the fixed tibia pad, the rotary tibia pad and other components, flexible combination is conducted according to different operation requirements, and therefore the adjustment requirement of a doctor for an osteotomy scheme in the operation process is greatly reduced.

To provide a tibial prosthesis having a distal mechanism for non-cemented fixation.SOLUTION: Techniques described herein relate to a tibial prosthesis for a knee arthroplasty including a baseplate and a tibial keel. The baseplate arbitrarily includes a distal surface 104 sized and shaped to substantially cover a proximal resected surface of a tibia; a proximal surface opposite the distal surface, the proximal surface having a lateral compartment and a medial compartment opposite the lateral compartment; a periphery extending between the distal surface and the proximal surface; a first layer of porous material forming at least a majority of the distal surface and extending to the periphery; and a second layer of nonporous or relatively less porous material having a plurality of reference features extending through the first layer, wherein the plurality of reference mechanisms form at least a portion of the distal surface. The tibial keel extends distally from the distal surface to define a longitudinal tibial keel axis.SELECTED DRAWING: Figure 1C-D

The present disclose relates to modular surgical implants, which can be used in treating long bone defect. In particular, the disclosure relates to a surgical implant modular assembly comprising at least a first scaffold and a second scaffold, wherein the first and the second scaffolds are identical.

The invention relates to a medical product (1), preferably in the form of a chain net for use during the treatment, more particularly during filling and / or closing, of a bone defect, having a plurality of individual elements (2), which are connected to one another such that individual elements (2) adjacent to one another engage in one another / are chained to one another, the individual elements (2) of the chain net being subdivided into main elements (3) and connection elements (4) that are designed differently from the main elements (3), and the main elements (3) and the connection elements (4) forming, when chained to one another, a grid structure that is flat in the x-y plane.

A bone implant (10) comprises a base section (12) which occupies at least 70% of the total volume of the bone implant (10) and consists of a first biocompatible material, and at least one connecting section (14) which occupies a maximum of 30% of the total volume of the bone implant (10) and consists of a second biocompatible material, wherein the second biocompatible material has an improved osseointegrative capacity compared to the first biocompatible material.

The present invention discloses a knee joint prosthesis structure capable of retaining anterior and posterior cruciate ligaments, comprising a femoral prosthesis, a pad, a tibial prosthesis and a patellar prosthesis, wherein the femoral prosthesis is provided with two arc-shaped brackets, a first channel is formed between the two brackets, two pads are provided, a support surface is provided at the upper end of the pad, a second channel is formed between the two pads, and the tibial prosthesis is provided with two base blocks, a connecting column is provided at the lower end of the base block, and a third channel is formed between the two base blocks. The present invention provides the femoral prosthesis, the pad and the tibial prosthesis with a first channel, a second channel and a third channel corresponding to each other, respectively, so that the anterior and posterior cruciate ligaments between the femur and the tibia can move freely in the space of the first channel, the second channel and the third channel, thereby retaining the anterior and posterior cruciate ligaments of the original knee joint, retaining all the bone of the femoral intercondylar spine and the tibial intercondylar spine, improving the stability, proprioception and spatial position sense of the patient's knee joint after surgery, restoring the patient's function of going up and down stairs and squatting, achieving normal leg flexion and extension movement, and improving patient satisfaction.

The application relates to the technical field of medical devices, and particularly discloses an expansion assembly for occipitoatlantoesthesis reconstruction, which comprises a plate body, one side of the plate body is provided with a groove, the plate body is provided with a plurality of first connecting parts, the first connecting parts are located on the outer periphery of the groove and are arranged at intervals, and the first connecting parts are used for being connected with the occipital bone and / or the atlas; the plate body is provided with at least one second connecting part, the second connecting part is arranged on the groove bottom, and the second connecting part is used for fixing the meninges. The above-mentioned arrangement is helpful for relieving the compression of the brain tissue and restoring the circulation of the cerebrospinal fluid. Since the plate body has the supporting capacity, when the intracranial pressure increases, the plate body will not be deformed, a relatively stable support is formed on the meninges, the probability of cracks at the suture of the meninges is reduced, the probability of the overflow of the cerebrospinal fluid and the meningeal outpouching is reduced, the recovery speed of the operation is improved, the scar adhesion is reduced, the circulation of the cerebrospinal fluid is smooth, and the probability of the secondary operation is reduced.

The invention discloses a floating bone flap and skull connecting device which comprises a fastening screw, a connecting piece and a plurality of traction lines, a first through hole is formed in the middle of the connecting piece, the fastening screw is sleeved with the connecting piece through the first through hole, and the fastening screw is locked in the middle of the upper end face of a floating bone flap. The connecting piece is located between the head of the fastening screw and the upper end face of the floating bone flap, a slipknot is arranged at one end of each traction line, and a second through hole is formed in each slipknot; a plurality of third through holes are formed in the edge of the floating bone flap at intervals, and a plurality of fourth through holes are correspondingly formed in the edge of the skull window; the other end of each traction line penetrates through the corresponding third through hole, the corresponding fourth through hole and the second through hole of the slipknot at one end of the traction line and then is connected to the connecting piece. After the skull flap is connected with the skull, tension and flexibility are good, the skull flap floats upwards sufficiently, and intracranial pressure reduction of a patient can be sufficient and thorough; and after the intracranial edema period, secondary fixation of the floating bone flap is facilitated, and the bone flap is prevented from sinking.

A universal low-profile intercranial assembly includes a mounting plate and a low profile intercranial device composed of a static cranial implant and an interdigitating functional neurosurgical implant. The low profile intercranial device is shaped and dimensioned for mounted to the mounting plate.

The invention discloses a bone meal conveying device for a maxillary sinus external lifting operation. The bone meal conveying device comprises a lifting auxiliary assembly, a feeding auxiliary assembly, a bone meal conveying assembly, a holding handle and a bent conveying pipe. The invention belongs to the technical field of maxillary sinus external lifting operation, and particularly relates to a bone meal conveying device for maxillary sinus external lifting operation. In order to solve the problem that the amount of bone meal in the existing maxillary sinus external lifting operation is difficult to control, a lifting auxiliary assembly and a feeding auxiliary assembly are provided, a cavity formed by maxillary sinus internal pushing is nearly hemispherical, and a processor calculates the volume of the cavity formed by maxillary sinus internal pushing, namely the volume of bone meal needing to be filled subsequently; and the numerical value is sent to the display screen to be displayed, so that a doctor can conveniently refer to the bone meal amount in the operation process, the bone meal amount required in the maxillary sinus external lifting operation can be specifically indicated and estimated in numerical value, and the device is suitable for maxillary sinus windowing and upward pushing of different heights of different patients.

A device for mechanical securement to hard tissue of a subject, the hard tissue having an end surface defining a direction of curvature such that over at least a portion of the surface, a total curvature of at least 180 degrees is defined, the device comprising a body portion comprising at least four contact points, three contact points of the four contact point span over 180 degrees of total curvature of the end surface in a plane defined by the three contact points, and a fourth contact point outside the plane, the four contact points providing mechanical securement of the body portion to the hard tissue.

The present invention discloses a degradable magnesium mesh for personalized reconstruction of alveolar bone defects in 3D printing; the magnesium mesh designs a personalized model structure based on CT data, and uses 3D printing technology to achieve high-precision preparation of the magnesium mesh, so that the magnesium mesh closely fits the anatomical shape of the alveolar bone; it overcomes the disadvantages of traditional titanium meshes that need to be bent during surgery and have a high exposure rate after surgery, reduces the surgical difficulty and time, and improves the surgical success rate. The surface of the magnesium mesh is a completely open regular hexagonal structure, and this mesh hole structure has the advantages of self-supporting, easy forming, high printing accuracy, and good mechanical properties. At the same time, combining the degradability of magnesium materials and the osteogenic advantages of magnesium ion bone induction, it solves problems such as stress shielding of titanium meshes, non-degradability, and the need for secondary surgery to remove them during dental implantation. The preparation process of the present invention is simple, the preparation cycle is short, the loss of raw materials is small, the repeatability is high, there is no pollution, and the obtained magnesium mesh has the characteristics of controllable shape and high precision, and can be used as a new generation of repair scaffolds for large-area bone defects in oral alveolar bone.

An implant and guide are described, together with methods for configuring the same. The implant and guide are for maxillofacial osteosynthesis and may be provided as a kit. Three-dimensional models of the pre- and postoperative anatomy are used to define attachment points. These attachment points are used to define a structure for the implant and the guide.

The disclosure relates to a surgical foam structure comprising an open-porous body made of at least one biocompatible implant material, wherein the porous body is dimensioned such that it fulfills at least one of the following: the porosity is in the range of 0.81 to 0.91 %, and the average pore diameter is in the range of 1.10 to 1.41 mm. The disclosure also relates to a system comprising the foam structure and a surgical fixation device for attaching the foam structure to bone.