10results about How to "Avoid trauma" patented technology

The invention discloses an orthopedic surgery navigation positioning method and system based on three-dimensional registration, and belongs to the technical field of orthopedic surgery navigation. According to the method, through preoperative multi-modal image fusion reconstruction, intraoperative dynamic point cloud collection and an improved mixed registration algorithm, precise alignment of a preoperative model and an intraoperative actual skeleton is achieved, and by combining real-time error monitoring and dynamic compensation, precise positioning parameters of a surgical instrument are output to guide surgical operation; the system corresponds to the method and comprises an image acquisition module, a three-dimensional reconstruction module, a registration calculation module, a navigation guiding module, an error monitoring module and a control module, all the modules work cooperatively, and it is ensured that the navigation positioning precision is smaller than or equal to 0.3 mm, the registration time is smaller than or equal to 3.5 s, and the dynamic error compensation response time in the operation is smaller than or equal to 50 ms. The method does not need to depend on a physical marker, does not need a doctor to manually intervene the registration process, is high in anti-interference capability, is suitable for various orthopedic surgery scenes, effectively reduces the surgical risk, and improves the surgical efficiency and the standardization level.

This utility model discloses a connecting rod for edentulous robotic implant surgery, which includes an intraoral end, a middle part, and a connecting end; the intraoral end is configured to connect with the screw retention abutment of the implant; the middle part is constructed as a space avoidance structure to avoid the lips and / or nose; the connecting end is configured to detachably connect to the robot's tracking device; the technical solution provided by this application does not require printing a personalized registration plate or additional implantation of retention titanium screws, etc., and is simple to operate, which can effectively shorten the chairside operation time of preoperative preparation.

The embodiment of the application discloses a non-invasive drug injection system, a control method, a control device, equipment and a medium. The system comprises a control module, a non-invasive injection device and a pulse module; the pulse module comprises a pulse generator and a non-invasive pulse electrode sheet; the number of the non-invasive pulse electrode sheets comprises at least two; wherein the control module is connected with the non-invasive injection device and the pulse module respectively, and is used for issuing control instructions to the non-invasive injection device and the pulse module; the pulse generator is used for applying an electric field pulse to the injection area through the non-invasive pulse electrode sheet, and the electric field pulse is used for forming an injection channel in the injection area; and the non-invasive injection device is used for injecting a target drug into a preset injection position through the injection channel. The technical scheme disclosed in the embodiment of the application improves the safety and controllability of transdermal administration.

The application relates to a navigation method, system, computer device, storage medium and computer program product. The method comprises the following steps: obtaining a target medical model, the target medical model being reconstructed based on an initial image scanned by a scanning device; generating operation planning information based on the target medical model; obtaining a real-time image scanned by the scanning device, and registering the real-time image with the target medical model to obtain a first registration relationship; obtaining a first coordinate relationship between a coordinate system corresponding to an execution tool and an image coordinate system of the real-time image; and navigating the execution tool based on the first coordinate relationship, the first registration relationship and the operation planning information. The method can model during operation, does not require preoperative CT, and realizes real-time registration without the need of adding additional markers.

The utility model discloses a kind of endodontic root canal therapy dilatation needle limiters, including handle, the upper end of the handle is fixedly connected with fixed ring, and fixed ring is fixedly connected with connecting rope on it, the lower end of the handle is fixedly connected with the body of being checked, and the upper end outside of the body of being checked is clamped with limit ring, the limit ring is fixedly connected with clamping block on it.The existence of limit ring can accurately limit the depth of the body of being checked into root canal, in the root canal treatment process, the root canal length of different teeth is different, by adjusting the position of limit ring, it can be ensured that the operation of dilatation needle in root canal is always in safe range, avoid excessive deep damage root apex tissue or beyond root canal cause unnecessary trauma, for molar and other root canal deeper teeth, limit ring can be adjusted to appropriate position, prevent dilatation needle from exceeding root apex hole in root canal preparation process, reduce the risk of occurrence of complications such as periapical periodontitis.

This invention discloses a fixation device for long bone fractures, belonging to the field of medical devices. It includes a limiting part, a base, elastic sutures, a reduction mesh sleeve, and a support adjustment rod. The limiting part is fixedly connected to the wall of the long bone shaft. The first end of the base is fixedly connected to the limiting part, and the second end of the base has an internally threaded hole extending towards the first end. The elastic suture extends from the second end of the base. Multiple elastic suture threading holes are discretely distributed on the reduction mesh sleeve. One side of the support adjustment rod is threadedly connected to the internally threaded hole, and the other side is fixedly connected to the reduction mesh sleeve. Multiple elastic sutures extending from the second end of the base pass through the fracture fragments at the bone ends and then fix the fracture fragments to the side of the reduction mesh sleeve facing the base via the aforementioned threading holes. This invention enables stable reduction of long bone fracture fragments, and only requires micro-holes for threading at the fracture ends, avoiding the trauma caused by numerous bone screw holes.

An auxiliary device for proximal aortic anastomosis in coronary artery bypass grafting (CABG) includes a puncture needle, a puncture cannula, a cutting cannula, and a ring compressor. The puncture cannula is fitted over the puncture needle, with a bulging ball at its tip and an annular groove at its tail end. The ring compressor is fitted over the puncture cannula and can slide axially; its tip has a notched compression ring with an inner diameter smaller than the outer diameter of the bulging ball. During puncture, after the aorta is penetrated, the ring compressor is pressed down, and the compression ring and bulging ball work together to clamp the puncture site, achieving a bloodless procedure. The cutting cannula is then pressed down, and the aortic wall within the compression ring is removed. The graft vessel is then anastomosed to the aorta, with the suture passing through the compression ring. After suturing, the ring compressor is rotated, and the suture exits through the notch. The entire device is then withdrawn, and the suture is tightened and knotted to complete the anastomosis. This invention avoids aortic clamping, eliminates the risk of plaque dislodgement, requires only a single port for anastomosis, and is simple to operate with reliable hemostasis.

The utility model provides an implantable intracranial pressure, electroencephalogram and brain local blood oxygen monitoring electrode for animals, which comprises a main control module, a power supply module, and a signal acquisition module, an ADC amplification and light source driving module and a communication module which are connected with the main control module, and the power supply module supplies power to the signal acquisition module, the ADC amplification and light source driving module and the main control module; the signal acquisition module adopts an FPC (Flexible Printed Circuit) board, the FPC board carries eight electroencephalogram acquisition electrodes, a ZXPAYZ040AD invasive pressure sensor, an external bridge and an infrared blood oxygen detection circuit, and the infrared blood oxygen detection circuit is connected with the ADC amplification and light source driving module. According to the utility model, acquisition, processing and monitoring of various physiological signals such as electroencephalogram, blood oxygen concentration and intracranial pressure are integrated at the same time, and synchronous acquisition, data integration and real-time feedback of multiple signals are realized.

The present application provides a pericardial traction exposure device for minimally invasive cardiac surgery, and relates to the technical field of medical devices, which comprises a dilatation ring and a traction assembly arranged on the dilatation ring. The dilatation ring is a deformable elastic ring structure, which can gently and uniformly expand the pericardial tissue after being inserted into the pericardial cavity. The number of traction assemblies is multiple, and they are uniformly arranged on the outer periphery of the dilatation ring along the circumference. The traction assemblies work together to provide more uniform and stable traction force for the pericardial tissue, effectively exposing the heart and providing a clearer surgical field for the surgeon, simplifying the surgical steps, reducing the operation complexity, and improving the overall efficiency and safety of the surgery. Moreover, the dilatation ring and the traction assembly of the present application do not need to be pulled out from the chest wall after traction of the pericardial tissue, avoiding additional surgical incisions and being beneficial to the postoperative recovery of the patient.

The invention provides a self-adaptive brain pressure self-adjusting artificial skull. The self-adaptive brain pressure self-adjusting artificial skull comprises a plurality of artificial skull flaps and a fixing device, the artificial skull flaps are made of materials compatible with body tissues, and the multiple artificial skull flaps can be installed together to form an overlapping structure with a circular coverage area. The size of an overlapping area of the overlapping structure can be adjusted according to the change of the intracranial pressure; the fixing device can fix the artificial skull flaps on the skull body. The artificial skull can be implanted immediately during an operation, the decompression effect is not affected after the skull is implanted, the artificial skull has the self-adaptive craniocerebral pressure, the craniocerebral space of an operation area is automatically adjusted, and meanwhile trauma and risks caused by skull repairing through a secondary operation are avoided.