13 results about "Sinus lift" patented technology

Disclosed in the present invention is a navigation and positioning apparatus for maxillary sinus lift surgery, belonging to the technical field of medical devices. The technical problems in the prior art of increased surgical difficulty and elevated surgical risk caused by invisibility during the maxillary sinus lift procedure are solved. The present invention comprises a navigation and positioning device, a connecting shaft detachably connected to the navigation and positioning device, and a stripping head detachably connected to the connecting shaft for a maxillary sinus mucosa stripping operation. The present invention combines the maxillary sinus lift instrument with the navigation and positioning device recognizable by a visual navigation instrument, such that the functions of guidance and positioning, as well as positioning of the stripping depth and range, can be effectively achieved, thereby effectively reducing the difficulty and surgical risk of maxillary sinus lift surgery. Moreover, a detachable connection mode is used both between the stripping head and the connecting shaft, and between the connecting shaft and the navigation and positioning device, such that an operator can select a suitable elevator according to the specific condition of a patient, which can increase the application range and the convenience of use of the maxillary sinus lift instrument.

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

AI ASSISTED SINUS LIFT GUIDE INSTRUMENT

The invention discloses a drill point for implanting prepared holes in maxillary sinus lifting operation. The drill point comprises a transmission shaft, an automatic stopping device and a drill bit body which are connected in sequence, the automatic stopping device comprises a stopping device shell, a transmission shaft connecting end, an axial torsion spring and a stopping device transmission block, one end of the stopping device shell is provided with a guide hole allowing the drill bit body to penetrate, the other end of the stopping device shell is provided with a bearing, and a transmission shaft is installed at the bearing and fixedly connected with the transmission shaft connecting end; the transmission shaft connecting end is connected with the stop device transmission block through an axial torsion spring; the drill bit body comprises a drill bit end, a drill bit cutting edge and a drill bit transmission block which are sequentially connected, the drill bit transmission block penetrates into the stopping device shell from the guide hole, and friction increasing structures matched with each other are arranged on the contact faces of the drill bit transmission block and the stopping device transmission block. The drill point for implanting prepared holes in the maxillary sinus lifting operation is reasonable in structural design, the risk of maxillary sinus mucosa perforation is reduced through the non-cutting end design and the automatic stopping device, and the application prospect is good.

The elastic limiting drill bit comprises a ball drill, a sleeve, an elastic piece and a transmission rod, a first groove is formed in one end of the ball drill, a second groove is formed in one end of the transmission rod, the two ends of the elastic piece are contained in the first groove and the second groove respectively, and the elastic piece is used for driving the transmission rod and the ball drill to be separated so as to disconnect meshing. According to the elastic limiting drill bit for lifting the maxillary sinus, after an alveolar bone is polished, under the condition that no external force is applied, the springback elastic force of the elastic piece enables the ball drill to be automatically separated from the transmission rod, the transmission rod drives the sleeve to idle, and therefore the ball drill is made to idle, and the maxillary sinus can be prevented from being damaged by the ball drill. The elastic piece is installed in the first groove and the second groove, so that the elastic piece is prevented from being in contact with the inner wall of the sleeve to be abraded, and the possibility that the elastic piece is clamped in a gap between the sleeve and the transmission rod or the ball drill is avoided.

Diagram "Algorithm for the diagnosis and treatment of post-implantation sinusitis that occurs after sinus lift and dental implantation"

The present invention relates to a maxillary sinus lifting device comprising: a surgical guide having a guide hole for guiding, to an accurate position, a drill for forming a perforation hole in the alveolar bone below the inner mucous membrane of the maxillary sinus; an elevation sleeve mounted in the guide hole of the surgical guide and having an inner spiral formed on the inner circumferential surface thereof; and an elevation guide drill having an outer spiral formed on the outer circumferential surface thereof and engaged with the inner spiral of the elevation sleeve to be rotated and raised in the perforation hole, thereby raising the inner mucous membrane of the maxillary sinus, wherein when the perforation hole is formed in the alveolar bone below the maxillary sinus by using the drill and then the mucous membrane in the maxillary sinus is raised with the elevation guide drill, the maxillary sinus mucous membrane is prevented from being damaged by a drill blade, and the maxillary sinus mucous membrane can also be safely lifted up with the elevation guide drill.

A system and method is provided for performing internal maxillary sinus lift procedures where the system and method employs a set of sequentially deployed surgical drill bits to be used in conjunction with a dental implant surgical kit for performing internal maxillary sinus lift procedures in the dental implant surgical situations where the sub-antral bone height is not adequate to host an implant.

The invention relates to the technical field of computer data processing, and discloses a construction method of a maxillary sinus lifting postoperative graft volume change prediction model based on a machine learning algorithm, a maxillary sinus lifting postoperative graft volume change prediction method and device, and a storage medium. The method comprises the following steps: acquiring clinical data and CBCT image omics data of a patient to form a data set, and performing data preprocessing on the data set; screening characteristic variables in the data set by applying chi-square test and LASSO regression methods, and constructing a training set, a verification set and a test set based on the screened characteristic variables; constructing an initial prediction model based on a Gaussian naive Bayes algorithm; training the initial prediction model based on the training set, the verification set and the test set, iteratively adding trees, adding one tree each time to fit the residual error of the last round of prediction, and finally obtaining the maxillary sinus lifting postoperative graft volume change prediction model with the root mean square error meeting the preset requirement.

A sinus lifting apparatus comprising: a drill bit configured to penetrate maxillary bone; a drill holder connecting the drill bit to a handpiece; a first optical fiber extending through a bit of the drill bit, configured to transmit a light beam from a light source toward the tip of the drill bit; a second optical fiber configured to receive reflected light from the tip of the drill bit and transmit it to a light sensor; a detection system configured to identify proximity to a membrane by reflected light of the second optical fiber; an alert mechanism configured to notify a user when the drill bit approaches indicated by the detection system detect approaching to the membrane; and a fluid delivery system extending through the tip of the drill bit, for lifting the membrane by hydraulic power, for generating a cavity to be filled with bone-building material.

The utility model provides a split type oral cavity endoscope for maxillary sinus lifting operation, and belongs to the technical field of medical instruments. The problems that the mucous membrane cannot be quickly observed and is inconvenient to clean in the existing maxillary sinus lifting operation are solved. The endoscope comprises an endoscope body, the endoscope body comprises a handle part and a head end part connected with the handle part in an inserted mode, an insertion section is arranged on the head end part, a camera module is arranged at the front end of the insertion section, a first signal line connected with an endoscope host is arranged in the handle part, and a second signal line connected with the camera module is arranged in the head end part. And when the head end part is inserted into the handle part, the first signal line is connected with the second signal line. Due to the fact that the endoscope body is of the split type structure, only the head end portion is polluted when the endoscope is used, only the head end portion needs to be detached from the handle portion and cleaned when the endoscope is cleaned, and cleaning is convenient.

The invention relates to a device for optimizing the primary stability for dental implants inserted at the same surgical time with the sinus lift procedure. The device, according to the invention, comprises a one piece body configured in the lower part (1) in the form of a biocompatible screw featuring a male thread suitable for allowing screwing the device inside the implant (D) to be stabilised when the device is fitted, the lower part (1) in the form of a screw being continued with a tapered centering section (2), not threaded, intended to also be arranged inside the implant (D), the major diameter of the said tapered centering section (2) being positioned flush with the upper face of the implant (D), the tapered centering section (2) being continued with a stabilising section formed externally at least of a first full turn of thread (3) and a second full turn of thread (4), the diameter of the second turn of thread (4) being larger than the diameter of the first turn of thread (3), the stabilising section being intended to be positioned in the sub-sinusal bone and, therefore, outside the implant (D), the stabilising section being provided inside with a hexagonal socket (15) intended to cooperate with a hexagonal wrench with a view to the fitting of the device in the implant (D), the one piece body of the device ending with an ovoid shaped fixing head section (5), the major axis (11) of which coincides with the axis of the alveolar bone.

The utility model provides an oral cavity endoscope for maxillary sinus lifting operation, and belongs to the technical field of medical instruments. The problem that whether mucous membranes are damaged or not cannot be rapidly observed in an existing maxillary sinus lifting operation is solved. The oral cavity endoscope for the maxillary sinus lifting operation comprises an endoscope body and an insertion section arranged at the front end of the endoscope body, a camera module and an illumination module are arranged at the front end of the insertion section, the illumination module is connected with an endoscope host through a signal line arranged in the endoscope body in a penetrating mode, and the illumination module is connected with the endoscope host. The front portion of the endoscope body is provided with a first bending section, the front portion of the first bending section is provided with a second bending section, the insertion section is arranged at the front end of the second bending section, and the center lines of the endoscope body, the first bending section, the second bending section and the insertion section are located in the same plane. Due to the fact that the first bending section and the second bending section are arranged on the front portion of the endoscope body, the oral cavity endoscope is made into the shape matched with the oral cavity, the insertion section can enter the oral cavity conveniently, and whether mucous membranes are damaged or not can be observed rapidly.