1241 results about "Neurosurgery" patented technology

The invention provides methods and systems for neurovascular imaging (150).

Minimally invasive neurosurgical intracranial robot system is introduced to the operative site by a neurosurgeon through a narrow surgical corridor. The robot is passed through a cannula and is attached to the cannula by a latching mechanism. The robot has several links interconnected via revolute joints which are tendon-driven by tendons routed through channels formed in the walls of the links. The robot is teleoperatively guided by the neurosurgeon based on real-time images of the intracranial operative site and tracking information of the robot position. The robot body is equipped with a tracking system, tissue liquefacting end-effector, at as well as irrigation and suction tubes. Actuators for the tendon-driven mechanism are positioned at a distance from the imaging system to minimize distortion to the images. The tendon-actuated navigation of the robot permits an independent control of the revolute joints in the robot body.

An embodiment of the invention provides a navigation and location system and method adopting a neurosurgical robot. The navigation and location system comprises motion execution equipment, a spatial position sensor, a matched position marking unit and a host, wherein the host is connected with the motion execution equipment and the spatial position sensor and used for creating surgical planning on a digital graphic image, and the surgical planning contains a position positioned to a lesion part independently and precisely as well as a motion path; the spatial position sensor is used for capturing the matched position marking unit, so that the position mapping of different space coordinates systems can be finished by the host; the motion execution equipment carries surgical instruments, is used for performing independent and precise positioning on the lesion part according to a specific motion scheme generated on the basis of the position positioned to the lesion part, the motion path and the position mapping of the different space coordinates systems, and is further used for stabilizing and locking the surgical instruments and then supporting surgery.

The invention is a manufacturing method for titanium alloy cranial bone dummy, applies to cranial nerves surgery cranial bone renovation field. The invention assembles the dummy based on the CT picture of patient; the character lies in: the computer with universal image processing software and back designing software reconstructs the three-dimension prototype of patient head after dividing the fracture image, designs the dummy of defect part according to the three-dimension prototype, and the designed dummy curved surface is guided into multi-point forming system and quick-prototype system to press titanium network board and produce dummy slice model, finally forms the terminal dummy through comparing and cutting the titanium network board; the invention uses multi-point forming technology to compress the dummy quickly, it can uses the softness character of mouldless multi-point to compress the dummy in order to solves the back springing problem. The cost is low, the speed is high.

A thermally modified microbial-derived cellulose material is described for use as an implantable material in general surgery, plastic surgery and neurosurgery.

A neurosurgical instrument includes a radiation detecting sensor adjustably positioned proximate a distal end of an arm of the instrument. A controller is programmed to receive and process electrical signals from the sensor. The controller operates to control an audio tone generator to emit a tone of higher intensity as the surgeon moves the sensor and its associated coagulator closer to radioactively tagged malignant tissue or a brain tumor of a patient, and of lower intensity as the coagulator moves away from the tissue or tumor, thereby permitting the surgeon to accurately locate and remove the malignant tissue or brain tumor. Also, in place of or in combination with the audio tone generator, a light emitter provides for emitting light of intensity directly related to the distance the sensor is from the malignant tissue or brain tumor tagged with a radioactive isotope.

The invention discloses a main operation hand for a minimally invasive neurosurgery robot on the basis of wire rope gearing. The main operation hand comprises a base, a first joint transmission mechanism, a second joint transmission mechanism, a third joint transmission mechanism, a wrist transmission mechanism and an opening and closing mechanism. By means of the layout mode that a motor is arranged in front of the base, the weight of all parts of the mechanisms of the main operation hand can be greatly lowered, then the rotating inertia of the main operation hand is reduced, and the rigidity of the mechanisms can be easily improved; wire rope gearing is adopted for first three joints of the mechanisms, and therefore the sizes of all the parts in the mechanisms are effectively reduced, and the mechanisms are more compact; by means of wire rope gearing, through appropriate tensioning, the return difference problem can be effectively solved; through the serial connection of the mechanisms and the reasonable joint layout, the working space of the mechanisms is enlarged, and the main operation hand better conforms to operation habits of a doctor.

The invention relates to a head and facial marker semiautomatic calibration method for a neurosurgical stereotactic surgery. The method includes aiming to a feature that automatic calculation of a computer requires quantization rules, after selecting an initial marking point, selecting relative points as facial points on the head of a patient according to a certain rule; and allowing a computer software system to calculate corresponding facial marking points automatically according to a relative rule, and thus, applying the two groups of the marking points to realize registration between space and image space of the patient. The method can be used under the condition of unadaptable or insufficient time to stick facial markers, head and facial features of the patient can be selected by a computer in three-dimensional images semiautomatically, and the neurosurgical stereotactic surgery without sticking marking points outside and a frame can be performed.

The invention discloses an adjustable viewing angle endoscope for a minimally invasive neurosurgery robot. The adjustable viewing angle endoscope for the minimally invasive neurosurgery robot comprises a lens module, a controllable snakelike module, an endoscope rod and a drive system mounted in a drive box, the drive box is fixedly connected with one end of the endoscope rod; the endoscope can adjust the viewing angle for wide range; the viewing angle can be adjusted along any direction, the use is convenient, the operation fault is reduced and the operation efficiency is raised.

The invention discloses a preparation process of dalteparin sodium. The preparation process comprises the following steps: preparing a heparin sodium solution, a heparin degradation fluid, a reducing solution and a crude product, refining, freeze-drying and the like. The average molecular weight of the obtained product is 5,500 to 6,500, the peak molecular weight is 3,500 to 6,000, a component with the molecular weight of less than 3,000 is not greater than 13% , a component with the molecular weight of greater than 8,000 is not greater than 15%, anti-Xa activity is more than or equal to 130IU/mg. The invention has the advantages of rich source of raw materials, high yield, stable and reliable quality, high purity, low cost, simple process, easiness in operation and no waste discharge. The dalteparin sodium has the anticoagulant, antithrombotic, anti-tumor, anti-inflammatory, anti-allergy and blood lipid regulating effects, thereby having a significant curative effect. The dalteparin sodium can be used for preventing preoperative and postoperative thrombosis of general surgery, orthopedic surgery and neurosurgery, effectively preventing venous thromboembolism of ischemic stroke patients, greatly reducing the risk of stroke, effectively preventing the solidification caused by extracorporeal circulation of blood, effectively preventing the instable coronary heart disease, and having a wide usable range.

The system comprises at least a support (5) to be attached to a patient by fixing means (4), said support having an outer thread (7), a first nut (9) with an inner thread (11) cooperating with said outer thread (7); and an anchor having a spherical bottom end (10) being placed between said support and said nut, a spherical head (15) said spherical bottom end and head being linked by a shaft, a second nut (16) having an inner thread (17) and intended to be screwed on an external device having a corresponding thread (31), such as a platform (20) or a surgical device (30), whereby the tightening of at least one of the nuts (9,16) on the support and/or on the external device allows to block the position of the anchor.

A hydrogel tissue adhesive having increased degradation time is described. The hydrogel tissue adhesive is formed by reacting an oxidized polysaccharide with a water-dispersible, multi-arm amine in the presence of a polyol additive, which retards the degradation of the hydrogel. The hydrogel may be useful as a tissue adhesive or sealant for medical applications, including but not limited to, ophthalmic applications such as sealing wounds resulting from trauma such as corneal lacerations, or from surgical procedures such as vitrectomy procedures, cataract surgery, LASIK surgery, glaucoma surgery, and corneal transplants; neurosurgery applications, such as sealing the dura; as a plug to seal a fistula or the punctum; adhesion prevention to prevent undesired tissue to tissue adhesions resulting from trauma or surgery; and as a hemostat sealant.

The invention discloses a neurosurgery clinical nursing head fixing device. The device comprises a chassis, a gearbox is arranged in the chassis, an adjusting threaded rod is arranged on the upper endof the gearbox, a threaded sleeve is arranged on the upper end of the adjusting threaded rod, the upper end of the threaded sleeve is connected with a hinged frame, the hinged frame is connected to the lower end surface of a pillow seat, limit sliding grooves are formed in the left and right sides of the inside of the pillow seat, the limit sliding grooves are provided with a rotating threaded rod and a threaded sliding block, the upper end of the threaded sliding block is provided with a connecting block, the upper end of the connecting block is provided with a fixing plate, the fixing plateis a curved plate, and the inner side surface of the fixing plate is provided with a sponge pad. The device is stable in structure, stable in operation, convenient to adjust, convenient to use and quick in loading and unloading, is capable of achieving a head fixing function for clinical nursing of neurosurgery, can be applied to the head fixing of different patients, has wide applicability, canachieve the lifting adjustment function, can achieve the rotation function, provides convenience for the operation of a surgery and the nursing function, and satisfies the current use requirements.

Conventional pupil detection equipment cannot realize simulation of different lighting environments, and the detection equipment with a darkroom environment has a large size and is extremely poor in convenience. The invention discloses wearable pupil light reflex measurement equipment. The lighting of different environments is simulated by a supplementary lighting light source by wearing a helmet on an examinee, and video data of both eyes of the examinee is captured by an infrared camera and is transmitted into a pupil measurement software system to realize analysis such as examine pupil aperture size measurement, iris area measurement and pupil aperture change curve drawing so as to obtain a screening result of a nervous system disease and form a clinical report. According to the equipment, the working intensity of a clinical medical worker can be greatly relieved, the precision of pupil reflex diagnosis is improved, and the equipment is extremely suitable for medical application in related fields such as clinical ophthalmology, neurosurgery and psychiatric and psychological department.

An embodiment in accordance with the present invention provides a technique for localizing structures of interest in projection images (e.g., x-ray projection radiographs or fluoroscopy) based on structures defined in a preoperative 3D image (e.g., MR or CT). Applications include, but are not limited to, spinal interventions. The present invention achieves 3D-2D image registration (and particularly allowing use with a preoperative MR image) by segmenting the structures of interest in the preoperative 3D image and generating a simulated projection of the segmented structures to be aligned with the 2D projection image. Other applications include various clinical scenarios involving 3D-2D image registration, such as image-guided cranial neurosurgery, orthopedic surgery, biopsy, and radiation therapy.

The invention discloses a multi-purpose clinical treatment device for the neurosurgery department. The multi-purpose clinical treatment device comprises a bed board, wherein the front end of the bed board is in sliding connection with an opening end of a U-shaped slider, two positioning suckers are adsorbed to the upper surface of the bed board, a fastening bolt is arranged on the front side face of the slider corresponding to the bed board, a single chip microcomputer is fixed to the right end of the front side face of the slider, a first stepping motor is fixed on the upper surface of the slider, an output shaft of the first stepping motor is fixedly connected with the lower end of a second electric telescopic rod through a coupler, when a patient moves unconsciously, the position of a wound moves, the single-chip microcomputer controls a first electric telescopic rod, the second electric telescopic rod, the first stepping motor, a third electric telescopic rod and a second stepping motor to work, so that a baking lamp always irradiates a wound, and the treatment effect is good; the single-chip microcomputer detects the distance between the positioning suckers and the baking lamp through a visual sensor, then the detection for the position of the wound is converted into the detection for the positions of the positioning suckers, and the positioning is simple and accurate.

The invention discloses a head fixing device for the neurosurgery department. The device comprises a base, a neck supporting mechanism and a head fixing mechanism; the base is provided with a fixing mechanism detachably connected with a sickbed or an operation table; the neck supporting mechanism comprises a first motor, a first threaded rod, a first threaded sleeve and a tray, the first motor islocated in the middle in the base, the first threaded rod is connected to an output shaft, the first threaded sleeve is in screw joint with the first threaded rod, and the tray is hinged to the top ofthe first threaded sleeve through a damping rotation shaft; the head fixing mechanism comprises a baseplate, vertical rods and side head supports, the baseplate is located on the base and located atthe rear side of the tray, the vertical rods are slidingly arranged at the left and right sides of the baseplate, and the side head supports are vertically connected to the tops of the vertical rods.The head fixing device is simple in structure and convenient to use, supporting can be provided for the necks of patients, the heads of the patients can be fixed, the fixing effect is good, and the head fixing device can be suitable for patients different in body shape and wide in application range.