14 results about "Periosteum" patented technology

The application discloses a path planning method for subcutaneous deep layer injection of a mandible, which comprises the following steps: determining a target region of a subcutaneous deep layer which needs to be filled or improved in contour based on three-dimensional anatomical data of a mandible; the subcutaneous deep layer refers to a loose connective tissue gap between a subcutaneous fat layer and an upper periosteum layer; planning a main path which is substantially parallel to a baseline of a lower edge of the mandible or substantially coincides with a preset mandible contour line in the target region; the main path is located in the subcutaneous deep layer; planning a plurality of branch injection paths based on the main path; the starting points of the branch injection paths are distributed at intervals along the main path and extend alternately to the outside of both sides of the main path; and all the paths form a wheat ear-shaped topological structure with the main path as a central axis and the branch injection paths extending to both sides. The method effectively avoids excessive concentration of fillers in any dimension, thereby significantly reducing the swelling degree of local tissues caused by pressure concentration and being beneficial to shortening the recovery time.

FIELD: otorhinolaryngology.SUBSTANCE: under endotracheal anesthesia, an endoscope equipped with optics and an instrument for removing pathological contents of the maxillary sinus are inserted into the nasal passage. The inferior nasal concha is displaced medially using a raspatory. Then, stepping back from the edge of the piriform opening by 1.5–2.0 cm in the caudal direction, a mucoperiosteal flap of the lateral wall is separated in the lower nasal passage. The mucoperiosteal flap is displaced posteriorly, exposing the bone skeleton in the projection of the inferomedial angle of the maxillary sinus. Next, using a cold plasma coblator, in ablation mode, the mucous surface of the bone skeleton is evaporated for 2–3 seconds, followed by coagulation of small vessels. Then, a bone valve measuring 10–15 mm is formed from the exposed bone skeleton. The bony valve is retracted in the caudal direction, forming an antrostomy. A 70-degree endoscope is inserted through the formed antrostomy and the pathological contents of the sinus are visualized. In this case, if the cyst is visualized with a coblator in ablation mode, the cyst is evaporated along with its contents, and the remaining cyst is captured and removed. If a polyp is visualized, the polyp stalk is first evaporated, and then the remaining part of the polyp is removed. If a foreign body is visualized, it is removed with forceps. In this case, if the foreign body is encapsulated or located in the thickness of the mucosa, a coblator in ablation mode evaporates part of the mucosa until the foreign body is exposed, and then removed. Next, the sinus cavity is washed with saline solution. The antrostomy is closed with a bone flap. The formed mucoperiosteal flap is placed back in its original place.EFFECT: method allows for endoscopic endonasal removal of pathological contents from the maxillary sinuses with a minimal risk of cyst / polyp recurrence and postoperative complications, reduced blood loss during surgery, shortened surgical time, postoperative rehabilitation periods, and temporary disability.3 cl, 3 ex

The application discloses a kind of biomimetic composite scaffold with periosteum-cortical bone-cancellous bone structure and its preparation method and application.The scaffold is assembled by independent periosteum biomimetic scaffold module and independent bone trunk biomimetic module.The periosteum biomimetic scaffold module is cylindrical tube structure hydrogel, loaded with zinc silicate particles and periosteum related cells, with the biological functions of promoting cartilage differentiation, secreting nerve and vascular factors and synthesizing periosteum matrix proteins.The bone trunk biomimetic scaffold module is cylindrical bioceramic, with multiple vertical pipes embedded in the dense layer of outer wall to simulate cortical bone, and with staggered structure inside to simulate cancellous bone.Animal experiments show that the biomimetic composite scaffold can effectively promote the integrated regeneration of bone trunk and periosteum in rabbit radial critical size defect model.Therefore, the application provides a new solution for the biomimetic design and regeneration repair of bone tissue engineering.

1. Name of the product in this design: Gingival retractor. 2. Purpose of this design: To retract the gingival tissue or periosteum during oral cavity repair. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The utility model belongs to the medical instrument field suitable for orthopedics operation, concretely relates to a multipurpose periosteal distraction device, at least includes: the periosteal distraction board is the strip board that presents the arc shape bending in the length direction, one end of periosteal distraction board is provided with locking hole, the bone needle has the needle head of inserting on the skeleton in one end, is equipped with the limit snap ring in the other end, the distraction nail is equipped with the through cavity that penetrates the distraction nail along the length direction inside, the distraction nail is divided into the nail head and the threaded rod that is screwed with locking hole, the distraction nail is screwed with periosteal distraction board, the bone needle is inserted in the through cavity, the limit snap ring is located nail head side, the needle head protrudes distraction nail outside. The utility model's periosteal distraction device can solve the technical defects of the periosteal distraction board of prior art because of stripping incision bilateral periosteum and big trauma, poor applicability when skull periosteum is distracted and bone needle inserts too deep.

The application relates to the technical field of orthopedic clinical repair, and particularly discloses a piezoelectric driving layered bionic support for repairing diabetic bone defects as well as a preparation method and application thereof. The support is a double-layer bionic structure, and the support comprises an upper-layer piezoelectric bionic periosteum simulating a periosteum and a lower-layer conductive filling hydrogel simulating a defect filling matrix. The upper-layer piezoelectric bionic periosteum is a nanofiber membrane, and the lower-layer conductive filling hydrogel is a composite three-dimensional porous hydrogel. The scheme designs a kind of physical hierarchical structure capable of simulating bone tissue, and the composite bionic support can conduct surface electrical signals to the deep part of the defect, and can synergistically regulate local immune metabolism and angiogenesis. The physical hierarchical structure material of the support exhibits excellent mechanical compressive strength, low impedance conductivity, and ultrasound-responsive on-demand degradation and drug release behavior adapted to the bone tissue healing period, and has extremely high clinical conversion potential.

The application provides a periosteum distraction device, which comprises a distraction plate and a support device, the support device comprises a first degradable layer arranged outside, a second degradable layer arranged in the first degradable layer in a radial direction, a support rod arranged in the middle of the second degradable layer, and a through channel reserved in the first degradable layer in an axial direction; the first degradable layer, the second degradable layer and the distraction plate are all made of degradable materials; the support device has a first end connected with the distraction plate and an opposite second end, the first degradable layer and the second degradable layer are configured to have a gradually slower degradation rate from the first end to the second end, and the degradation rate of the first degradable layer is slower than that of the second degradable layer; the distraction plate has a shape memory traction member, and the shape memory traction member passes through the through channel. The periosteum distraction device provided by the application can realize automatic distraction, has precise distraction degree, and does not need to take out the distraction plate after recovery, so that the patient is free from secondary injury.

The utility model discloses a kind of absorbable rib fixation nails, made of high molecular absorbable material integrated, including shank part and the clamping portion of both ends of shank part, clamping portion is equipped with bifurcation structure with opening towards non-connection shank part one end, at least one branch outside of bifurcation structure is equipped with inverted tooth structure, inverted tooth structure end is conical or triangular, the width of bifurcation structure is greater than the width of shank part.The utility model can be made into nail body by absorbable material, clamping portion end bifurcation, inverted tooth structure can be fixed after being expanded in marrow cavity and increasing friction, wide conical end is easily placed into marrow cavity and can play anti-rotation, anti-removal effect, fixed firm and not easy to displace, without suture reinforcement to prevent affecting periosteal blood supply and nerve compression, after fracture healing, fixation nail can be degraded and absorbed, without secondary operation removal, after absorption, chest CT, MRI examination has no influence, more promotional, can better improve the user's use experience.

The invention relates to an artificial periosteum comprising a functionalized collagen-containing membrane and a drug- carrier mixture, wherein the drug-carrier mixture comprises at least one therapeutic agent and a calcium-containing carrier mixture. The invention also relates to use of the artificial periosteum for repairing bone.

This invention discloses a bio-barrier membrane with guided bone regeneration (GBR) function and its construction method, belonging to the technical field of bone tissue regeneration and repair materials. The bio-barrier membrane is a composite structure formed by a decellularized periosteum and an extracellular matrix (ECM) cross-linked layer. Specifically, it is prepared by in-situ cross-linking of the decellularized periosteum with an acidic ECM solution. This bio-barrier membrane is a bilayer composite membrane that mimics the natural periosteum, synergistically exerting barrier, osteoconduction, and osteoinduction effects, significantly improving bone repair and regeneration.

The utility model provides an assembly type saliva suction periosteum separator which comprises a handle, a flat working end is integrally formed at one end of the handle, a preset included angle is formed between the axial direction of the flat working end and the axial direction of the handle, and saliva suction pipes are arranged on the surface of the handle and the surface of the flat working end. And the head end of the saliva suction pipe positioned at the flat working end is basically flush with the outer end surface of the flat working end. Before operation, one end, far away from one side of the flat working end, of the saliva suction tube can be connected to a saliva suction system of an existing oral cavity comprehensive therapy machine firstly, and when a doctor holds the handle to carry out periosteal separation operation through the flat working end, the operation is convenient; meanwhile, liquid generated in the oral cavity of a patient can be sucked away through the saliva suction pipe by means of negative pressure suction of the saliva suction system, at the moment, periosteum separation and saliva suction operation can be completed by only one doctor, the surgical operation view of the doctor is completely not interfered, and smooth operation is ensured.

The application discloses a kind of periosteal materials and preparation method and application thereof, belong to the technical field of biomedical materials, including polyvinyl alcohol layer, polycaprolactone layer and methacrylated gelatin layer, polyvinyl alcohol layer, polycaprolactone layer and methacrylated gelatin layer are stacked in turn, and methacrylated gelatin layer is loaded with fracture-derived extracellular vesicles (BFVs).The application uses the above-mentioned periosteal material and its preparation method and application, and the prepared periosteal material has a three-layer structure, can stably release BFVs, improve the aging bone microenvironment through epigenetic reprogramming, significantly promote critical size bone defect repair, especially suitable for elderly individuals.

Disclosed herein is an alternative method and device to traditional alveolar distraction osteogenesis, which typically necessitates bone destruction. This method employs a titanium rod with a screw head design connected to two peripheral protrusions. The lower protrusion anchors the device to the jawbone, while the upper protrusion supports a porous titanium plate beneath the periosteal tissue. By gradually rotating the screw head, the distance between the protrusions increases, promoting controlled, tension-free bone growth without necessitating bone destruction. This approach is advantageous where traditional methods are not feasible, such as bones affected by congenital defects, severe atrophy, or near-exposed nerve canals. The porous titanium plate acts as a scaffold, preventing periosteal tissue collapse and maintaining space for bone regeneration, while preserving the integrity of the periosteum. This innovation offers a more effective and less invasive solution for complex alveolar bone deficiencies.