8results about How to "Reduce trauma" patented technology

This invention relates to a markerless real-time registration and tracking method and system for mandibular surgery. The method includes the following steps: the patient performs multiple opening and closing movements of the upper and lower jaws while the robotic arm is fixed, and the system synchronously records the changes in the angles of each joint of the robotic arm; based on the forward kinematics of the robotic arm, the continuous motion trajectory of the distal end of the jaw in space is calculated to form an actual jawbone trajectory point cloud; a preoperative image model is formed using the actual jawbone trajectory point cloud, a simulated jawbone trajectory is constructed in the preoperative image model, and the actual trajectory is aligned using the ICP registration algorithm to achieve automatic registration; the system establishes a mapping between angle changes and the spatial posture of the jawbone to achieve dynamic tracking and visual navigation during surgery. This invention solves the problems of large errors, high complexity, many limitations, and low efficiency in preoperative image data registration technology during maxillofacial surgery, avoids the need for preoperative implantation of markers, and achieves high-precision registration, high automation, and strong real-time performance under natural conditions.

The utility model relates to the technical field of laparoscopic surgery equipment, more particularly to a kind of magnetic surgery traction device under laparoscope, including sucking disc device, traction rod and permanent magnet, sucking disc device is adsorbed to the surface of viscera, and traction rod is detachably connected with sucking disc device, first magnetic attraction piece is provided on sucking disc device, permanent magnet is attached to the outside of abdominal wall, and permanent magnet is adsorbed with first magnetic attraction piece.The utility model can be pulled to different directions by allowing first magnetic attraction piece and permanent magnet to be attracted, and the range of movement is large, and it will not cause damage to viscera, can be used for various laparoscopic surgeries, widely used, with greater clinical significance, while reducing abdominal wall punching, reduce the trauma to patients during operation.

The invention provides an intelligent tumor auxiliary diagnosis system and method based on deep learning, a medium, a terminal and a program product. The method comprises the steps that pathological section images and multiple single-mode radiology images of tumor tissue are acquired and preprocessed; constructing a pathological encoder for outputting pathological features according to the pathological section image; training according to various single-mode radiology images to obtain a single-mode diagnosis model, and taking the output pathological features as semantic reference in the training process; according to multiple single-mode radiology images, performing fusion and training to obtain a multi-mode diagnosis model, and performing shielding mode input based on a random mode shielding strategy in the training process; and deploying the single-mode diagnosis model and the multi-mode diagnosis model to output a tumor diagnosis result. According to the method, the single-mode image can be independently processed, and the multi-mode image features can be fused, so that complementary information among different modes can be fully mined, and the accuracy of noninvasive tumor diagnosis and the clinical diagnosis efficiency are improved.

The invention discloses a fibula far-end downward-moving single-arm external fixing device, and relates to the technical field of orthopedic external fixing frames, the fibula far-end downward-moving single-arm external fixing device comprises a first fixing assembly and a second fixing assembly, the first fixing assembly comprises a first fixing frame, an upper sliding clamping block, a first kirschner wire, a lower sliding clamping block and a second kirschner wire, the first fixing assembly comprises a first fixing frame and a first kirschner wire, the upper sliding clamping block and the lower sliding clamping block are arranged on the first fixing frame in a sliding mode and locked through a locking device, the first kirschner wire penetrates through the upper sliding clamping block to be fixedly connected with the proximal tibia end or the proximal fibula end, and the second kirschner wire penetrates through the lower sliding clamping block to be fixedly connected with the distal fibula end; the second fixing frame is fixedly connected with the first fixing frame, the third kirschner wire penetrates through the second fixing frame and is fixedly connected with the far end of the fibula of the patient, and the second kirschner wire and the third kirschner wire form an included angle and are located in different planes. The fixing effect of the fibula far-end downward-moving single arm is good, and fixation can be conducted from multiple aspects.

The invention relates to the technical field of the dermatology department, and discloses a dermatology department hair regeneration stimulation device which comprises a hair treatment positioning mechanism, the middle position of the hair treatment positioning mechanism is fixedly connected with a first position control mechanism, and the middle position of the first position control mechanism is connected with a second position control mechanism. The bottom end of the second position control mechanism is connected with a regeneration stimulation mechanism, the regeneration stimulation mechanism comprises a first positioning frame, and the inner wall of the first positioning frame is slidably connected with a second positioning frame; inflation and deflation of the telescopic air bag are controlled through the air pump, accurate up-and-down movement of the hair stimulation microneedle is achieved, the problem of uneven force caused by manual operation is avoided, the risk of scalp trauma and hair follicle injury is remarkably reduced, and the safety and effectiveness of treatment are improved; due to the design of a positioning rod and a reset spring, it is ensured that the lifting frame can be rapidly separated from the scalp without external force, damage caused by long-time compression is avoided, and the use risk of the device is reduced.

The application provides a non-contact channel device suitable for hysteroscopy diagnosis and treatment, which comprises a sealed cylinder with open ends, a cover is arranged at the opening of one end of the sealed cylinder, the cover is detachably arranged, a filter assembly is arranged in the sealed cylinder, a drainage pipe is arranged on the side surface of the sealed cylinder and communicates with the inner cavity of the sealed cylinder, the drainage pipe is located between the cover and the filter assembly, and a first punch hole and a second punch hole are arranged on the side surface of the cover. The non-contact channel device suitable for hysteroscopy diagnosis and treatment has good sealing and isolation effects in the use process, can avoid liquid spattering and large outflow of the cervical orifice in the diagnosis and treatment process, can establish a channel from the vaginal orifice to the cervix, most patients do not need to use a vaginal dilator and a cervical clamp, tissue trauma is reduced, the device is convenient for collecting samples and avoiding loss, and the clinical diagnosis accuracy is improved.

This invention belongs to the field of biomedical materials and flexible sensing technology, and particularly relates to an implantable pressure sensor, its preparation method, and its application. The pressure sensor has a three-layer parallel plate structure, wherein the electrode layer is a conductive hydrogel prepared from polymerizable zwitterionic monomers, the dielectric layer is a microphase-separated hydrogel formed by copolymerization of acrylamide monomers and acrylate monomers, and the encapsulation layer is a biocompatible polymer fiber membrane. By controlling the material composition, polymerization conditions, and structure, the device achieves good matching with biological soft tissues in terms of water content and tissue adaptability. In terms of functional characteristics, the implantable sensor exhibits advantages such as sensitive pressure response and strong cyclic stability, and can be applied in fields such as tissue engineering, physiological or pathological signal monitoring, neural stimulation modulation, and drug delivery.

An improved wearable device delivers a fluid medicament to the subcutaneous tissue of a user. The device is better suited for patients with Parkinson's Disease and other central nervous system disorders, than conventional infusion devices. The device can include a reusable part including a drive component (e.g., motor) and control electronics and a disposable part including one or two medicament reservoirs. Medicament can be evacuated from the medicament reservoir(s) by a plunger assembly that includes a plunger head attached to a lead screw that is linearly moved by a nut rotating in a bushing, all within the disposable part. The device can be fluidically coupled with the tissue via a flexible cannula.