11 results about "Vascular surgery procedure" patented technology

The invention belongs to the technical field of operation auxiliary devices, and particularly relates to a minimally invasive intervention device for cerebrovascular surgery, which comprises a universal support assembly, a quick-release control assembly, a detachable assembly, a handle assembly, an annular support assembly and an adjustable support leg assembly, the quick-release control assembly and the handle assembly are arranged below and above the universal supporting assembly respectively. Driving electric energy and electric signals can be transmitted between the first metal contact and the second metal contact, after the first metal contact and the second metal contact are connected, actions of surgical tools can be controlled through the touch screen, a magnetic adsorption type quick release structure is designed between the magnetic suction tool seat and the magnetic suction base, the tools can be conveniently replaced in the surgical process, and the surgical efficiency is improved. And different tools are operated and controlled through the same control handle and the same touch screen, so that the operation is simpler for doctors.

The invention discloses a blood vessel adhesive bandage, a preparation method of the blood vessel adhesive bandage and application of the blood vessel adhesive bandage in promoting healing of a sutured port after a vascular surgical operation. An electrostatic spinning technology and a photo-crosslinking technology are combined to construct a high-porosity superfine methacrylic acid gelatin (GelMA) hydrogel fiber membrane patch; then tannic acid (TA) functional modified fiber surface is endowed with immunoregulation ability, finally, matrix-derived factor-1 alpha (SDF-1 alpha) is grafted to TA to endow the TA with stem cell collection ability, and finally, the SDF-1 alpha (at) TA (at) GelMA system patch is obtained. The patch can utilize SDF-1alpha to collect stem cells and gather the stem cells at a vascular suture to accelerate vascular endothelium regeneration, and TA is used for relieving local injury and performing immunoregulation, so that healing of a sutured wound is accelerated finally.

The invention discloses a medical image key structure extraction method for vascular surgery preoperative evaluation, which comprises the following steps: an image acquisition and multi-modal data acquisition stage: acquiring a multi-source medical image and clinical hemodynamic parameters, and generating a blood vessel initial segmentation map after processing; a structural feature reconstruction stage: extracting morphological features of a vascular wall and geometric features of a lumen, and generating a vascular tree three-dimensional structure map; in the pathological feature fusion stage, the vascular tree three-dimensional structure atlas and clinical hemodynamic parameters are fused, and vasculopathy risk confidence is generated; in the operation planning decision-making stage, the vasculopathy risk confidence coefficient, the vascular tree three-dimensional structure atlas and the clinical hemodynamic parameters are converted into an executable operation planning suggestion set, and the executable operation planning suggestion set is issued to an operation navigation system. According to the method, multi-modal images and hemodynamic parameters can be seamlessly integrated, accurate vascular structure extraction and lesion risk assessment are realized, and a more comprehensive and objective decision basis is provided for vascular surgical operation planning.

The present invention discloses an automatic monitoring method for the movement of a guide wire in plastic surgery with a surgical robot and relates to the field of surgical navigation technology. The method comprises: extracting a surgical path from a preoperative CT image; placing an electromagnetic navigation device in a surgical space; obtaining coordinate values ​​of an experimental model with attached marker points of electromagnetic sensors under a magnetic field and corresponding coordinate values ​​of the image coordinate space, and obtaining a registration transformation matrix; attaching 3 to 5 electromagnetic sensors sequentially to the front end of the guide wire, and positioning the guide wire at the surgical exit point.Acquiring, during the movement of the guide wire to the intervention endpoint and using the electromagnetic navigation device, the positions of the electromagnetic sensors at time t, and obtaining the positions in the image coordinate space based on the registration transformation matrix, and fitting the shape of the leading end of the guide wire and displaying it fused in a reconstructed image; monitoring based on the relative positional relationship between the intervention path and the electromagnetic sensors.

The application discloses a drainage device for cardiovascular surgery and belongs to the technical field of medical devices, which comprises a drainage tube, one end of the drainage tube is provided with a negative pressure generator, the other end of the drainage tube is provided with a suction tube in communication, and the outer side of the drainage tube is provided with a support structure; the support structure comprises a plurality of support rings, the support rings located at both ends are detachably connected with the end portions of the drainage tube; a plurality of connecting lines penetrating all the support rings in sequence are fixed on the support ring located at one end; a plurality of positioning holes for the corresponding connecting lines to pass through are arranged on the support ring located at the other end, a limiting structure for limiting the sliding of the connecting lines is arranged on the support ring, and an elastic supporting piece is arranged between the connecting line and the support ring; the purpose lies in solving the problem that the flexible material drainage tube is easily affected by the internal and external pressure difference or mechanical collision and is flattened, thereby affecting the normal use of the drainage device.

The invention discloses a distraction device for cardiovascular surgery, and belongs to the field of medical instruments, the distraction device comprises a fixing assembly, a distraction assembly and a supporting frame, the fixing assembly is provided with a distraction plate, a clamping plate, a suction cup and a negative pressure tank, and the distraction assembly is provided with a distraction rod, a gear knob and a locking button; through switching of double fixing modes of clamping plate hooking and pulling and suction cup negative pressure adsorption, the device is suitable for different operation scenes and patients; the adjusting threaded rod is matched with the spring to provide force safety feedback, so that the tissue is prevented from being damaged due to excessive traction; a gear knob realizes fine adjustment of distraction force, and limiting helical teeth and a locking wedge ensure stable locking in an operation; the device can be detached only through two steps after operation, secondary touch of a wound is reduced, and the device is easy to operate, high in safety and capable of meeting the requirements of cardiac surgery for view exposure and tissue protection.

This invention discloses a medical pad that is less prone to fiber shedding and its preparation method. The medical pad is made from polytetrafluoroethylene (PTFE) short fibers through a nonwoven process and a laser perforation process. The preparation steps include using PTFE short fibers as raw materials, opening and carding them, feeding them into a web-laying machine to obtain a loosely structured PTFE fiber layer, then reinforcing it with a needle punch to obtain a PTFE felt sheet, and finally using a laser perforation process to form uniformly distributed through holes on the PTFE felt sheet, ultimately obtaining the medical pad that is less prone to fiber shedding. This medical pad is used in the field of vascular surgery as a pad during vascular suturing. It can seal needle holes and reduce the cutting force of sutures on the vessel wall. Compared with conventional short-fiber felt sheets, the fibers in the medical pad of this invention are less prone to shedding.

The present invention discloses a medical gasket that does not shed fibers and a preparation method thereof. The medical gasket that does not shed fibers consists of a PTFE felt sheet in the middle layer and biodegradable electrospun film layers on the upper and lower surfaces as the main body; a laser drilling process is used to form uniformly distributed through holes on the main body of the medical gasket, and a layer of biodegradable biomaterial coating is covered on the surface of the through holes; the medical gasket is used in vascular surgery to achieve the effects of decompression and hemostasis; among them, the electrospun film layer is made of a biodegradable biomaterial, has good biocompatibility, not only effectively avoids the phenomenon of fluff shedding of the PTFE felt sheet, but also can guide and support cell differentiation and promote tissue regeneration; the through holes coated with the biodegradable biomaterial coating are beneficial to the insertion of the suture needle, improving the convenience of the operation.

The present invention relates to a rotational atherectomy apparatus and a rotational atherectomy device. The rotational atherectomy apparatus includes a drive device and the rotational atherectomy device. The drive device is coupled to a drive shaft of the rotational atherectomy device in order to actuate rotation of the rotational atherectomy device. The rotational atherectomy device is used for vascular surgery and includes the drive shaft and a rotating abrasive head. The drive shaft has a distal connecting portion coupled to the rotating abrasive head. The rotating abrasive head and the drive shaft separately define hollow cavities axially extending therethrough. The hollow cavities are configured for insertion of a guide body therethrough. A centroid of a structure consisting of the rotating abrasive head and the connecting portion coupled thereto does not coincide with center axes of the hollow cavities. The present invention can reduce the risk of a surgical procedure using the rotational atherectomy apparatus to recanalize a blood vessel occluded by a lesion. It can also make the surgical procedure easier to perform.

The application discloses a cardiovascular surgery expansion device, and belongs to the field of medical instruments, which comprises a fixing assembly, an expansion assembly and a support frame, wherein the fixing assembly is provided with an expansion plate, a clamping plate, a suction cup and a negative pressure tank, and the expansion assembly is provided with an expansion rod, a gear knob and a locking button. The clamping plate and the suction cup are used in a double fixing mode of hooking and pulling and negative pressure adsorption, which is suitable for different surgical scenes and patients. The force safety feedback can be provided by adjusting the threaded rod in cooperation with the spring, so that the tissue is prevented from being excessively pulled and damaged. The gear knob is used for fine adjustment of the expansion force, and the limiting bevel gear and the locking wedge are used for ensuring the stable locking during the operation. After the operation, the device can be disassembled in only two steps, and the secondary touch of the wound is reduced. The device is simple in operation, high in safety, and can meet the needs of the cardiovascular surgery for the visual field exposure and tissue protection.