A method for guiding resection of local tissue from a patient includes generating at least one image of the patient, automatically determining a plurality of surgical guidance cues indicating three-dimensional spatial properties associated with the local tissue, and generating a visualization of the surgical guidance cues relative to the surface. A system for generating surgical guidance cues for resection of a local tissue from a patient includes a location module for processing at least one image of the patient to determine three-dimensional spatial properties of the local tissue, and a surgical cue generator for generating the surgical guidance cues based upon the three-dimensional spatial properties. A patient-specific locator form for guiding resection of local tissue from a patient includes a locator form surface matching surface of the patient, and a plurality of features indicating a plurality of surgical guidance cues, respectively.

Systems and methods for guiding tissue resection

The invention belongs to the field of maxillofacial plastic medical instruments, and in particular relates to a CT (computerized tomography) and CBCT (cone beam computerized tomography) fusion data based digital occlusion guide plate and a reconstruction method thereof. The guide plate has a horseshoe-shaped body, and the guide plate body is provided with a guide plate upper jaw surface, a guide plate lower jaw surface, a guide plate lip outer side and a guide plate lip inner side, wherein the guide plate upper jaw surface and the guide plate lower jaw surface are provided with a groove respectively, and the shape of each groove is fit with the shape of a corresponding tooth crown. Aiming at the difficulty of reconstructing an occluding relation and the problems that the surgical precision of a conventional model needs to be improved and the like, a CBCT and spiral CT fusion data based virtual occlusion reconstruction method, by simulating operative reduction, virtually reconstructing the occluding relation, designing an occluding plate, recording the occluding relation and performing 3D printing to generate a guide plate real object, is used for operatively reconstructing the occluding relation, reducing the operation difficulty, shortening the operation time, ensuring the operation effect, and improving the reconstruction precision.

CT (computerized tomography) and CBCT (cone beam computerized tomography) fusion data based digital occlusion guide plate and reconstruction method thereof

The invention provides a fibula cutting shaping positioner through 3D printing. The fibula cutting shaping positioner comprises a bone-cutting guide plate and two positioning buckles, the bone-cutting guide plate is provided with a long-slot-shaped curved surface cavity fitted with a bone surface of a portion, planned for bone cutting, of a fibula, and the positioning buckles are connected to positions connected with two ends of the portion in a buckled manner and connected with two ends of the bone-cutting guide plate. By adopting the fibula cutting shaping positioner, the bone-cutting guide plate and the fibula can be in place accurately, twisting or sliding of the bone-cutting guide plate on the fibula can be avoided, the fibula is ensured to be subjected to bone-cutting shaping according to a preset design scheme, operating effect is accurate, operation is simple and convenient, requirements on experience of operators are low, and operating errors caused by the operators through operation based on sensation are completely eradicated.

Fibula cutting shaping positioner through 3D printing

The invention relates to a medical instrument used for a dental operation, in particular to a mandibular condyle reposition expander The mandibular condyle reposition expander comprises a lower supporting and combining portion and an upper supporting and combining portion The lower supporting and combining portion corresponds to the incisura of the underjaw of the human body The upper supporting and combining portion is matched with the zygomatic arch corresponding to the incisura of the underjaw of the human body A lower supporting front rod and a lower supporting rear rod are hinged to the two ends of the lower supporting and combining portion respectively An upper supporting front rod and an upper supporting rear rod are hinged to the two ends of the upper supporting and combining portion respectively The upper end of the lower supporting front rod and the lower end of the upper supporting front rod are hinged to a front hinged shaft The upper end of the lower supporting rear rod and the lower end of the upper supporting rear rod are hinged to a rear hinged shaft Both the front hinged shaft and the rear hinged shaft are arranged on a middle shaft The expander is compact in structure and convenient to use, the pains of patients are small, force is reasonably borne, mechanical deformation or breakage can not easily occur in the use process, and the mandibular condyle reposition expander can adapt to different individual differences

Mandibular condyle reposition expander

The invention discloses an artificial temporal-mandibular joint replacement bone trimming guide plate assembly. An articular tubercle guide plate is attached to the outer side face of the zygomatic arch, and the lower edge of the articular tubercle guide plate is in an edge shape or is provided with a shoulder. A zygomatic arch guide plate is attached to the outer surface of the zygomatic arch and is in a U shape, and the opening part of the U shape is in an edge shape. A condyle guide plate is attached to the outer surface of the condyle, and the upper edge of the condyle guide plate is in an edge shape or is provided with a shoulder. An ascending limb guide plate is attached to the outer surface of the mandible ascending limb, the upper portion of the ascending limb guide plate is hollowed out, and the hollowed-out part is in an edge shape. Bottom bone cutting of the maxilla articular tubercle, excision of the mandibular condyle and grinding of the outer surface of the zygomatic arch and the outer surface of the ascending limb are accurately guided, and the unnecessary bone loss is reduced.

Artificial temporal-mandibular joint replacement bone trimming guide plate assembly

The utility model discloses a bone repairing guide plate component for artificial temporomandibular joint replacement. An articular tubercle guide plate is attached to the outer lateral surface of a zygomatic arch, and the lower edge of the articular tubercle guide plate is blade-shaped or provided with a shoulder; a zygomatic arch guide plate is attached to the outer lateral surface of the zygomatic arch, the zygomatic arch guide plate is U-shaped, and the opening part of the U shape is blade-shaped; a condyle process guide plate is attached to the outer lateral surface of a condyle process, and the upper edge of the condyle process guide plate is blade-shaped or provided with a shoulder; a ramus guide plate is attached to the outer lateral surface of a mandibular ramus, the upper part of the ramus guide plate is hollow, and the hollow part is blade-shaped. The bone repairing guide plate component for the artificial temporomandibular joint replacement precisely guides maxillary articular tubercle bottom osteotomy, mandibular condyle amputation, outer lateral surface grinding for the zygomatic arch, and outer lateral surface grinding for the ramus, and unnecessary bone loss is reduced.

Bone repairing guide plate component for artificial temporomandibular joint replacement

The utility model discloses a digital bite plate system comprising a computer aided design terminal and a digital bite plate, wherein the computer aided design terminal comprises a scanning terminal, an analytic processing terminal, and an output printing terminal. The scanning terminal is connected with an analytic processing terminal, and the analytic processing terminal is connected with the output printing terminal; The digital bite plate system has a horseshoe shape with a thickness of 2 mm-5 mm, a width of 8 mm-1.5 cm, and a vertical distance between the forefront end and the rearmost end is 4 cm-5 cm. A tooth-form groove I matching with an upper dental arch of a patient is disposed at the upper surface of the digital bite plate; a tooth-form groove II matching with a lower dental arch of the patient is disposed at the lower surface of the digital bite plate; the tooth-form groove I recesses downwards; the tooth-form groove II recesses upwards; the tooth-form groove I is independent of the tooth-form groove II and is not communicated with the tooth-form groove II. With the preoperative and intraoperative application of the digital bite plate system of the utility model, the operation duration is shortened and the operation precision is improved.

Digital bite plate system

The utility model discloses a pair of condyle process intracapsular fracture surgery restoration forceps The condyle process intracapsular fracture surgery restoration forceps comprise forceps heads, forceps rods and forceps tails, wherein the forceps rods are hinged together through a hinging shaft, the two forceps heads are respectively shaped like a bent arc so that after the two forceps heads make contact with each other, an arc-shaped hole can be formed in the middle, a locking structure used for tensioning locking and fixing each forceps rod is arranged at the end, near the corresponding forceps tail, of the forceps rod The hole capable of being closed is formed in the head part of the condyle process intracapsular fracture surgery restoration forceps, the tails of the forceps rods can be locked and fixed, a condyle process fracture block can be conveniently clamped in the surgery and is reset and fixed along with a mandibular ramus nub, surgical operation is convenient, and accuracy of the surgery is improved

Condyle process intracapsular fracture surgery restoration forceps

The utility model provides protective guide plates for osteotomy condylar process of temporal-mandibular joint ankylosis. According to the protective guide plates disclosed by the utility mode, at least one guide plate is provided; each guide plate is 2mm thick; two opposite surfaces of each guide plate are an osteotomy surface and a support surface; the support surface has a radian; the radian of the support surface is matched with a radian of a temporal-mandibular joint; a side vane is arranged on the edge of the osteotomy surface; a plurality of through holes are formed on each guide plate; a screw that is used to connect each guide plate with the surface of a bone is arranged in each through hole. The protective guide plates for the osteotomy condylar process of temporal-mandibular joint ankylosis disclosed by the utility model is simple in structure and convenient to use, has a significance of guiding osteotomy in an operation, and can facilitate the operation, and improve the accuracy and safety of the operation.

He Dongmei

Papers

Artificial temporal-mandibular joint replacement bone trimming guide plate assembly

Bone repairing guide plate component for artificial temporomandibular joint replacement

Digital bite plate system

Condyle process intracapsular fracture surgery restoration forceps

Protective guide plates for osteotomy condylar process of temporal-mandibular joint ankylosis