23 results about "Bone flaps" patented technology

The invention relates to a nickel-titanium alloy stent for limiting brain bulging and flap sinking after skull flap removal and a preparation method of the nickel-titanium alloy stent, and relates to the field of biomedical materials, the stent is of an elastic net-shaped structure which is arranged according to the radian of a missing flap on a bone window and is provided with a plurality of reserved gaps; the stress deformation pressure of the bracket ranges from 103.085 kPa to 103.285 kPa, and the stress deformation pressure of the bracket ranges from 103.085 kPa to The stent comprises a plurality of polygonal grid units which are uniformly distributed, the plurality of polygonal grid units are connected to form a net-shaped structure, and pores in the middles of the polygonal grid units are reserved gaps; and each polygonal grid unit consists of a plurality of S-shaped edge wires which are connected end to end. In a deboning decompression operation, the nickel-titanium alloy stent provided by the invention is placed on a bone window to solve the problems of early-stage brain bulging and later-stage skin flap sinking after a skull flap is removed; the prepared nickel-titanium alloy stent is excellent in mechanical property, high in biological safety and high in clinical adaptability.

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 fixation device includes a base, a bracket positioned above the base, and a fastener connecting the bracket and the base. The base is configured to be attached to a first surface, such as a skull of a patient. The bracket includes an upper portion, a lower portion, and an intermediate portion connecting an end of the upper portion to an end of the lower portion. The lower portion is configured to be attached to a second surface, such as a bone flap removed from the skull of the patient. The fastener connects the upper portion of the bracket to the base. The fastener is configured to pass through at least one of an opening in the base and an opening in the upper portion of the bracket to incrementally adjust a distance between the base and the upper portion of the bracket.

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 invention relates to a prosthesis used for being implanted into a defect area of a bone, and particularly discloses a skull repairing component which comprises a bone flap body used for being filled in the defect area of the skull, and the bone flap body comprises a disc-shaped filling body and a plurality of stimulation units. The plurality of stimulation units are circumferentially arranged between the outer disc surface and the inner disc surface of the filling main body, and each stimulation unit can protrude out of the side wall of the filling main body through radial movement; and the force application part is used for driving the stimulation units to radially protrude out of the side wall of the filling main body, so that after the bone flap body is filled in the defect area, the stimulation units are driven to stimulate the bone flap body. The force applying component drives the stimulation units to protrude out of the side wall of the filling body, so that the radial outer ends of the stimulation units are pressed against the side wall of the defect area to stimulate the bone body of the side wall of the defect area; and the positioning component is used for combining and positioning the bone flap body and the skull.

The utility model provides a novel postoperative bone flap position protection and pressure detection device which comprises a supporting mechanism, the supporting mechanism is used for being worn on the head of a patient, the supporting mechanism comprises a plurality of frameworks, the frameworks are of an arc-shaped structure, the two ends of the frameworks are rotationally connected through connecting assemblies, and the connecting assemblies are connected with the supporting mechanism. A fan-shaped area is formed between every two adjacent frameworks; the protection mechanism is used for protecting the deboned flap position, the protection mechanism is rotationally installed on the framework, and the size of the fan-shaped area can be adjusted by rotating the protection mechanism; the pressure reduction mechanism is arranged at the bottom of the framework, and the framework makes contact with the scalp of a patient through the pressure reduction mechanism; and the detection mechanism is mounted on the pressure reduction mechanism and is used for indirectly detecting the intracranial pressure.

The utility model discloses a device for fixing and restoring skull bone flaps, and belongs to the technical field of bone fixing and repairing. The device comprises a skull fixator, the skull fixator comprises a skull side fixing end and a bone flap side fixing end which are fixedly connected, and the skull side fixing end is fixed to a skull through a fixing titanium nail; an adjusting boss with an internal thread is arranged on the bone flap side fixing end, the first titanium nail sequentially penetrates through the defective bone flap and the lifting structure and then is connected with the internal thread of the adjusting boss in a matched mode, and the defective bone flap and the bone flap side fixing end are fixed together. A new choice is provided for pure complete fixation and bone flap removal after the craniocerebral operation, the problem that the intracranial pressure is increased after pure skull fixation can be effectively solved, the risk caused by brain tissue swelling after the operation is reduced, and meanwhile the stability after bone flap reduction can be guaranteed.

The fixing device comprises a fixing cover, the fixing cover is connected with a limiting ring, a pressurizing bag is arranged at the lower end of the fixing cover, the pressurizing bag is provided with an attaching part and an extruding part, and the attaching part protrudes outwards to form a protruding bag; the lower end of the protruding bag is of a circular truncated cone structure, and the upper end is of a long-strip-shaped columnar structure. The extrusion part of the extrusion bag is attached to the scalp at the skull defect position after the skull flap removal operation to pressurize and fix the skull defect position, when brain tissue swells, the extrusion part deforms to enable pressure in the extrusion bag to be increased, the protruding bag extends outwards, the pressure in the extrusion bag is increased to resist swelling of the brain tissue, and when the brain tissue does not swell any more, the extrusion part deforms to enable the pressure in the extrusion bag to be increased to resist swelling of the brain tissue. The pressure in the pressurizing bag is reduced, the protruding bag retracts, the pressurizing degree of the pressurizing bag is dynamically adjusted by observing the change of the protruding bag, the stability of brain tissue is improved, subdural effusion is reduced, the situation that the intracranial pressure is reduced due to leakage of cerebrospinal fluid caused by increase of surgical incision tension is avoided, and therefore craniocerebral collapse after craniocerebral flap removal is relieved.

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.

An affixation device for a human skull may include a base plate that has an outer area for securing to the skull and an inner area for securing to a bone flap removed from the skull. The affixation device may also have at least one spacer located between the outer area and the inner area, where the at least one spacer extends from a first surface of the base plate, where the first surface facing the skull when the fixation device is in an installed state, and where the at least one spacer is configured to extend between the bone flap and the skull in the installed state.

The present invention discloses an absorbable scaffold for shaping the dura mater during dural repair. The absorbable scaffold is a resilient mesh structure with multiple gaps that, after softening by heating, conforms to the inner surface and cross-section of the bone flap and, after cooling, settles to the curvature of the inner surface and cross-section of the bone flap. This absorbable scaffold for shaping the dura mater during dural repair effectively addresses the problem of large epidural gaps caused by improper dural suturing, achieving watertightness requirements.

The invention relates to an implant for closing a defective area of a skull, and specifically discloses a skull flap comprising a flap body and a compensation member attached to an edge of the flap body, the compensation component serves as a prosthesis component to form a composite bone flap with the bone flap body so as to be used for backfilling and closing a defect area of a skull, and a plurality of elastic contact pins which are distributed in the circumferential direction are arranged on the compensation component in advance. The composite bone flap is allowed to be backfilled in the defect area by enabling the elastic contact pins to elastically deform inwards, and after the composite bone flap is backfilled in the defect area, the gap is filled with the compensation component, and the elastic contact pins on the compensation component make elastic contact with the side wall of the edge of the skull to stimulate the bone body on the skull.

An attachment device for cranioplasty may have a body defined from a sheet material and may include a first connection end having at least a first connection hole configured to cooperate with a fastener to anchor the attachment device to a bone flap or prosthesis covering at least part of the opening in the skull. A second connection end has at least a second connection hole configured to cooperate with a fastener to anchor the attachment device to a skull adjacent to an opening in the skull. A frame portion extends from the first connection end. A coil portion may be between the frame portion and the second connection end, the coil portion having struts configured for deforming in flexion, and webs between the struts configured for deforming in torsion. The frame portion is configured to be located over a periphery of the opening in the skull to block inward movement. The coil portion enables an out-of-plane deformation of the attachment device for the first connection end to move out of a neutral plane with the second connection end.

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.

The application discloses an adjustable skull lock and relates to the technical field of medical devices. Technical points are as follows: the skull lock comprises an upper cover piece, a through hole is arranged on the upper cover piece, a stand is arranged in the through hole and connected with the through hole through a first locking assembly, one side of the upper end of the stand is provided with a mounting groove, the upper end of the mounting groove is fixed on the upper cover piece, a lower cover piece is arranged below the other opposite side of the stand, a plug is arranged in the mounting groove and connected with the mounting groove through a second locking assembly, and the lower end of the plug is fixedly connected with the upper cover piece. The upper cover piece and the lower cover piece in the skull lock can fix the skull of a patient, the upper cover piece and the upper cover piece tooth can fix the skull prosthesis, so that the skull lock can be applied to the fixation of various free bone flaps, artificial skull prosthesis implant bodies with different thicknesses and original skulls, and the problem of skull fixation failure caused by the thickness difference between the skull of a patient and a skull prosthesis in the prior art can be effectively solved.

The invention belongs to the technical field of medical apparatus and instruments, and discloses a concave titanium alloy fixing device for treating ischemic cerebrovascular diseases, which comprises a fixing sheet, the overall appearance of the fixing sheet is a butterfly-shaped symmetrical structure, the fixing sheet is a curved surface sheet body made of a biocompatible titanium alloy material, the surfaces of the two sides of the fixing sheet are curved surfaces bent in the same direction, and the surfaces of the two sides of the fixing sheet are curved surfaces bent in the same direction. The surface of the side, attached to the skull, of the fixing piece is a concave face, and the center of the fixing piece is sunken from the convex face side to the concave face side to form a sunken part. A plurality of fixing holes are formed in the fixing piece and evenly distributed in the surface of the fixing piece, and the inner diameter of each fixing hole is matched with the size of a screw. Through the arrangement of a butterfly-shaped symmetrical structure, the fixing piece can cover the oval bone flap, and all-directional pressing is carried out; the concave curved surface of the fixing piece is attached to the bone flap of a patient, the evenly-distributed protruding blocks provide larger and more uniform pressing force for the bone flap, the stability of the bone flap after restoration is remarkably enhanced, an STA / STF tissue bridging layer is pressed, and the postoperative healing and vascular reconstruction effects are better.

The application discloses a skull bone flap fixing device, relates to the technical field of skull bone flap fixing, and aims to solve the problems that most of the existing skull bone flap fixing devices are fixed through the mode of extrusion from different directions, are prone to cause extrusion damage to the edge of the skull bone flap, and are prone to be rubbed and damaged when being taken. The upper end of the fixing base is provided with an air leakage prevention sealing cover; further comprising: an air outlet pipe arranged on the upper surface of the air leakage prevention sealing cover and welded and connected with the air leakage prevention sealing cover, the upper end of the air outlet pipe is provided with a diffusion horn pipe, the diffusion horn pipe and the air outlet pipe are an integral structure, through air cavities are arranged in the air outlet pipe and the diffusion horn pipe, and the through air cavities penetrate through the air leakage prevention sealing cover; a mounting cavity is arranged in the inside of the fixing base and is an integral structure with the fixing base, and a hair dryer is arranged in the inside of the mounting cavity.

The utility model belongs to the technical field of fixing devices, and discloses a bone flap fixing device used after craniotomy, which comprises a grip, the top of the grip is fixedly connected with a gun body, one side of the gun body is rotatably connected with a working swivel, the bottom of the grip is rotatably connected with a rotating handle, one side of the rotating handle is fixedly connected with a limiting hook, and the other side of the rotating handle is fixedly connected with a connecting rod. A clamping and locking device is slidably connected to the bottom of the grip, a moving groove is formed in the bottom of the grip, and a reset device is arranged on the left side of the grip; during surgery, when the device needs to be used for operation, a push rod is pressed, so that a limiting block is blocked by a triangular prism and cannot rebound, the situation that articles in the device are popped out and need to be treated due to the fact that a handle is mistakenly touched and rotated during taking and placing, and the working efficiency is low can be prevented, and therefore the working efficiency can be improved; and the position of the limiting block is reset through the knob, so that the device is locked, the knob can be operated and locked more stably and accurately, and sliding, damage and the like are not prone to occurring.

The invention relates to the technical field of medical instruments, in particular to a skull deboning decompression window pressure control protective cap which comprises a cap body and a fixing band, a protective cavity wrapping the head is formed in the cap body, and the cap body comprises a rigid shell and an elastic inner container; the rigid shell is semispherical; the elastic inner container is arranged in the rigid shell, a mounting cavity is formed between the inner wall of the top of the rigid shell and the outer wall of the top of the elastic inner container, the rotary adjusting mechanism is mounted in the mounting cavity and drives the elastic inner container to rotate and adjust, and the rotary adjusting mechanism is contained in the rigid shell when not working. By improving the rotary adjusting structure, the rotary adjusting structure is directly contained in the rigid shell, the safety problem caused by the fact that the rotary adjusting structure protrudes out of the protective cap is avoided, the rotary adjusting structure is simplified, and operation is simpler and more convenient.

The application discloses a skull repair fixing method, which comprises a drilling fixing part and a connecting part; the drilling fixing part comprises a drilling expansion fixing part; the drilling expansion fixing part is annular with an opening; the center position of the drilling expansion fixing part is a conical screw hole; two sides of the opening of the drilling expansion fixing part are respectively provided with bone flap fixing parts; after the drilling expansion fixing part is placed into a drilling hole on a skull, a screw is screwed into the conical screw hole, and the drilling expansion fixing part is clamped in the drilling hole after expansion; the two ends of the connecting part are respectively provided with a clamping groove for clamping a bone flap and a clamping groove for clamping a skull. The skull repair fixing method is simple in operation, does not need metal nail fixing, and has no additional protruding part on the skull, so that the mental state of a patient after operation is better.

The invention discloses an adjustable self-locking fixing clamp applied to bone flap connection and fixation and an installation instrument thereof, the adjustable self-locking fixing clamp comprises an adjustable self-locking fixing clamp and a matched installation mechanism, the fixing clamp comprises a bottom pressing plate, an upper cover pressing plate and a self-locking nut arranged on the upper cover pressing plate, a first flexible pressing unit and a second flexible pressing unit which correspond to each other are obliquely arranged on the periphery of the bottom pressing plate and the periphery of the upper cover pressing plate respectively, a screw connected with a self-locking nut in a threaded mode is arranged in the center of the bottom pressing plate, the screw is sleeved with the upper pressing cover plate in an up-down sliding mode, and an inner threaded hole and a square hole are formed in the screw. A first groove for containing a self-locking nut is formed in the top of the upper cover pressing plate, a rotating groove is formed in the top of the self-locking nut, a threaded part in threaded connection with the inner threaded hole and a square protrusion arranged in the square hole are arranged at the front end of the installation mechanism, and an elastic wedge-shaped protruding block in interference fit with the rotating groove is arranged at the front end of a rotating handle on the installation mechanism. By applying the method, the surgical operation can be simplified, the biocompatibility is improved, artifacts are eliminated, and the method is suitable for various people.

The invention discloses a skull flap drafting device and a using method. The skull flap drafting device comprises a drafting device fixing support, a bone needle used for connecting the drafting device fixing support with a skull around a flap and a drafting adjusting rod. The drafting adjusting rod is installed on the drafting device fixing support and can vertically move relative to the drafting device fixing support. The lower end of the connecting and drafting adjusting rod is connected to a cut skull flap and is used for dragging the flap to vertically move; a group of bone needles are arranged around the drafting adjusting rod at intervals; the bone needle is adjustably connected with the retractor fixing support, and the lower end of the bone needle is fixed on the skull around the bone flap. The skull flap traction device solves the technical problems that a traditional bone traction device cannot meet the requirement for only conducting longitudinal traction treatment on the skull and cannot be directly applied to traction treatment of the skull flap.

The utility model discloses a device capable of lifting and restoring bone flaps in bone surgery, and belongs to the technical field of bone fixation and repair. According to the device, a bone flap is fixed on an original bone through a bone fixer; the bone fixator comprises a first titanium nail, a fixing titanium plate, a threaded titanium alloy sleeve and a second titanium nail. The fixed titanium plate is an X-shaped titanium plate, and threads are arranged inside and outside the threaded titanium alloy sleeve; one end of the fixed titanium plate is fixed on the bone flap through a second titanium nail; the other end of the fixed titanium plate (102) is screwed into a threaded titanium alloy sleeve after a first titanium screw penetrates through the other end of the fixed titanium plate (102), and the threaded titanium alloy sleeve is fixed on the edge of the original bone through an external thread; the bone flap is controlled to lift by rotating the first titanium nail; a new means is provided for bone restoration and fixation in the bone surgery, a new choice is added between pure complete fixation and overall lifting, meanwhile, the device is higher than a traditional nail plate fixing system and a bone locking system in system strength, and the stability of the bone after restoration is guaranteed.