55 results about "Fixation method" patented technology

The invention discloses a PICC (Peripherally Inserted Central Catheter) tip precise navigation fixing method and system based on electrocardiogram real-time positioning. High-precision positioning and safe fixing of a catheter tip are realized through a multi-modal data fusion and deep learning technology. The method comprises the following steps: collecting intracavity electrocardiosignals (ECG) in real time through a catheter built-in electrode, and obtaining blood vessel wall contact pressure and temperature data in combination with an optical fiber sensor; an improved wavelet threshold algorithm is adopted to dynamically suppress motion artifacts, and P-wave features are enhanced; the preprocessed ECG signals are input into a spatial-temporal feature fused Transformer model, a time attention layer is used for analyzing P-wave time sequence changes, a space attention layer integrates multi-lead space distribution features, and the positioning precision is optimized in combination with preoperative blood vessel anatomical data; the ECG positioning result and the optical fiber sensing data are fused through Kalman filtering, three-dimensional position information of the tip end of the catheter is generated, and real-time navigation is conducted on an augmented reality interface; and when the P wave amplitude reaches a CAJ threshold value, the contact pressure is safe and no abnormal temperature exists, a shape memory alloy (SMA) fixing ring is triggered to contract, and accurate fixing is achieved. The method solves the problems that a traditional method depends on X rays and is poor in anti-interference performance, has the advantages of being free of radiation, high in real-time performance and adaptive to blood vessel deformation, and is suitable for clinical P catheter implantation.

A fixation member, an orthopedic device using a fixation member, or a method for using the same includes fastener elements that are integrally formed with the fixation member that can be attached to the orthopedic device without adhesive. The fixation member may be secured to the orthopedic device through welding and / or a mechanical connection. The welding attachment may involve a weld created through various processes, including a heat staking process.

The invention discloses an orthopedic external fixing device and a fixing method of a fixing needle of the orthopedic external fixing device. The orthopedic external fixing device comprises a fixing plate, the fixing needle, a first clamping plate and a second clamping plate. A plurality of through holes are formed in the fixing plate, and the fixing needles penetrate through the corresponding through holes in the fixing plate; the first clamping plate and the second clamping plate are arranged on the two sides of the fixing plate in the thickness direction respectively and installed on the fixing needle, and the first clamping plate and the second clamping plate abut against the end faces of the two sides of the fixing plate respectively so as to limit movement of the fixing plate in the axial direction of the fixing needle. Friction force between the two clamping plates and the fixing plate can further limit movement of the fixing plate in the radial direction of the fixing needle, and therefore indirect connection between the fixing needle and the fixing plate is achieved. In the whole connecting process, the fixing needle can not make any direct contact with the fixing plate, the fixing needle can penetrate through the fixing plate at various angles, the requirement for the positioning precision of the fixing needle is lowered, the operation difficulty of a doctor is lowered, and the universality of the external fixing device for the orthopedics department is improved.

To provide a carbon dioxide fixation apparatus and a method for fixing carbon dioxide, which can inexpensively fix carbon dioxide and also can inexpensively produce powder having carbon dioxide fixed therein in large quantities. The carbon dioxide fixation apparatus (1) includes water addition means (5) for adding water to concrete sludge (2) from which coarse aggregate and fine aggregate have been removed with stirring, supply means (11) for supplying a carbon dioxide-containing gas (G) to a first intermediate (6) which has passed through the water addition means (5), and water drain means (20) for draining water from a second intermediate (12) which has passed through the supply means (11) to produce powder containing precipitated calcium carbonate, which is calcium carbonate crystals, cement carbonatized powder in which calcium components in cement particles are carbonatized on the surface of the cement particles, and unreacted cement particles.

The invention discloses a whole-course anchoring and fixing method for a deep venous catheter. The method comprises the following steps: firstly, implementing double-layer pouch suture at a puncture point of the catheter by adopting an antibacterial-absorbable composite suture so as to finish primary anchoring and sealing; then, the same suture is spirally wound to the tail end in a sectional mode along the in-vitro section of the catheter, and detachable middle anchoring pieces are arranged on the winding path at intervals so as to provide sectional supporting. Finally, the tail end of the catheter is locked through an adjustable intelligent fixing disc and covered with sterile dressing. By constructing a four-stage fixing system of puncture point suture anchoring, body spiral winding restraining, middle anchoring piece supporting and terminal fixing disc locking, whole-course, three-dimensional and firm anchoring of the deep venous catheter from the puncture point to the tail end is achieved, and the traction resistance and the displacement resistance are remarkably improved. The method has the advantages of actively preventing and controlling infection, dispersing local pressure, improving patient comfort and adapting to various clinical scenes, and catheter related complications can be effectively reduced.

This utility model discloses a porcine reproductive and respiratory syndrome virus (PRRSV) detection kit, relating to the field of detection kits. The PRRSV detection kit includes a kit body, a bracket at the bottom of the kit body, and a detection mechanism on the outside of the kit body. The detection mechanism includes a detection block disposed inside the kit body, a sealing block movably disposed above the detection block, and a fixing bracket movably engaged inside the bracket and movably disposed above the detection block, thus fixing the kit body and the bracket in place. This PRRSV detection kit allows for the determination of the injection site of the kit body without opening the kit body using the detection block. Subsequently, the sealing block sequentially seals the area above the kit body, and the moving fixing bracket secures all kit bodies above the bracket, reducing the complexity of this fixation method and ensuring that the use of the sealing block does not affect the overall fixation effect of the kit body and bracket.

The application discloses a catheter pump assembly, a catheter pump and a fixing method of a sensing device. The catheter pump assembly comprises a pump shell, a sensing device and a cover plate. The pump shell has a flow inlet and a flow outlet. A first installation station is arranged on the outer side of the pump shell close to the flow outlet. The sensing device has a probe. The cover plate is arranged on the first installation station and forms an installation space together with the first installation station, which can accommodate the probe. The cover plate is provided with a first avoiding hole which can avoid the probe, so that the probe can be in contact with the fluid. In addition, the cover plate is provided with a glue injection hole which can inject glue into the installation space. According to the application, the probe of the sensing device is directly fixed on the outer side wall of the pump shell through the cover plate. The probe can directly contact the fluid for detection, the parameter precision of detection and the physiological control effect of the catheter pump are improved, and the probe can not be loosened due to the impact of the fluid, so that the stable fixation of the sensing device and the pump shell is ensured.

This invention belongs to the field of medical devices, specifically a combined internal fixator and fixation method for fixing joints with micro-motion. The combined internal fixator includes a first bone screw and a second bone screw. A movable connecting structure is provided between the connecting ends of the first and second bone screws. The movable connecting structure includes a groove and a shaft. The groove includes an insertion port and a mounting groove communicating with the insertion port. The mounting groove has a semi-circular cross-section. The shaft includes a semi-circular shaft adapted to the mounting groove, which is rotatably accommodated within the mounting groove, allowing the first and second bone screws to rotate relative to each other around a first radial axis. This invention, through a hook-groove sliding self-locking structure, achieves controllable micro-motion and integrated implantation for fixing joints with micro-motion. It has achieved significant technological advancements in preserving joint physiological function, simplifying surgical procedures, avoiding secondary surgeries, and reducing the incidence of complications. It has important clinical application value and is suitable for fixing joints with micro-motion.

The invention belongs to the field of medical instruments, and discloses a medical silica gel dressing fixing adhesive tape which comprises an adhesive tape body, and the adhesive tape body sequentially comprises a carrier layer, a silica gel adhesive layer and a stripping liner from outside to inside; the carrier layer is made of an elastic breathable material, and the silica gel adhesive layer is made of medical-grade organic silica gel; a plurality of first microcapsules are dispersed in the silica gel adhesive layer, the first microcapsules are drug-loaded microcapsules, and wall materials of the drug-loaded microcapsules are made of materials responding to the pH value, enzyme concentration or temperature change of a wound environment. Enzyme or ions are released after the second microcapsule is broken, the wall material of the first microcapsule is actively degraded, cascade response of'exudate increase-developing prompt-drug accelerated release 'is realized, a large amount of drugs are quickly released when the exudate appears, and infection or inflammation is effectively controlled.

Methods and devices for tissue graft fixation include fixation devices attached to an adjustable fixation loop of suture without compromising the graft or requiring additional material to complete the repair. Other fixation devices are attachable to an independent adjustable suture system. Adjustable fixation loops minimize slip / creep of the suture within the loop.

The application relates to a full-suture meniscus fixator, an implanting device and a suture fixing method, relates to the technical field of medical instruments, and comprises a first fixing part and a second fixing part, a positioning hole is arranged in the middle of the first fixing part, the same positioning holes are arranged at the two ends of the second fixing part, an integral suture is arranged on one side of the first fixing part, one end of the suture away from the first fixing part is sequentially threaded through the positioning hole on the first fixing part and the two positioning holes on the second fixing part, and the suture is wound around the suture between the first fixing part and the second fixing part. The application has the effects of reducing the operation time, reducing the operation difficulty, and improving the operation safety.

The invention discloses a stomach tube built-in type fixing device and a fixing method, and relates to the technical field of medical instruments, the stomach tube built-in type fixing device has the advantage of preventing a nasogastric tube from being separated from the body of a patient due to dragging, and the technical scheme is characterized in that the stomach tube built-in type fixing device comprises the nasogastric tube and is characterized in that the nasogastric tube is connected with a main fixing assembly for preventing the nasogastric tube from being separated from the body of the patient; the main fixing assembly comprises a connecting band, one end of the connecting band extends into the nostril located on one side, penetrates through the nasal foramen and extends out of the nostril located on the other side, and the two ends, located outside the two nostrils, of the connecting band are bound and fixed to form an annular structure; a main body base is fixed on the connecting band, the main body base is positioned on the front sides of fixed parts at two ends of the connecting band, a mounting seat is arranged beside the nasogastric tube, the nasogastric tube is fixed on the mounting seat, and the mounting seat is detachably and fixedly connected with the main body base through a clamping component.

This invention relates to the field of artificial ligament technology, specifically disclosing a method for securing the distal end of an artificial ligament. This method is mainly used for securing the traction suture to the distal fixation segment of the artificial ligament. The artificial ligament includes a free wire segment within the joint cavity, two braided segments located at both ends of the free wire segment, and two distal fixation segments located on opposite sides of the two braided segments. The fixation method mainly includes the following steps: placing the traction suture outside the distal fixation segment, and using a portion of the traction suture to create a covering portion, wherein the covering portion covers a portion of the two free strands of the traction suture outside the distal fixation segment. This invention ensures the structural integrity of the artificial ligament, the reliability of its function, and reduces the risk of inflammation in the patient.

The invention relates to the technical field of medical instruments, in particular to a thoracoscopic rib plate fixator and a thoracoscopic rib plate fixing method, and belongs to internal fixing equipment and a matched fixing method which are suitable for combination of an endoscopic technology and rib fracture minimally invasive repair. The memory alloy rib fracture internal fixation device or bone fracture plate is convenient to install, reasonable in structure, safe and reliable, and meets the requirement for minimally invasive surgery, so that the minimally invasive surgery of thoracoscope chest wall subcutaneous or submuscular diving tunnel rib fracture fixation is completed. Through the split type design of the embracing arms, the position of an affected bone can be conveniently adjusted under a thoracoscope, operation obstacles caused by premature recovery of the embracing arms are reduced, and the main purposes of reducing shape recovery of the embracing arms of the product due to the fact that the product is affected by the thoracic cavity environment during installation, reducing operation time and providing a more excellent medical instrument product for a patient are achieved.

The present application belongs to the technical field of ultrasonic physiotherapy, and discloses a transcranial ultrasound treatment fixing method and a helmet based on individual skull image 3D printing. The main process is as follows: MR and CT imaging technology is used to scan the head of a patient to collect data, the system marks the brain lesion of the patient according to the collection result, and then obtains a tomographic optimized data set for training an artificial intelligence model, and finally realizes automatic generation of a solid helmet model with the help of artificial intelligence. The helmet is made by a 3D printer according to the generated model, and at the same time, the installation hole of the ultrasound treatment head is generated in the process of making the helmet, which is used to install the ultrasonic transducer, so as to ensure that the power size, frequency amplitude, incident angle of the ultrasonic wave and the distance between the ultrasonic transducer and the affected area reach the best state, forming customized treatment for different patients. In addition, the helmet model is also provided with a nose frame, which is placed on the patient's nose bridge when worn, which can prevent the helmet from displacement and inclination, thereby ensuring the accuracy and reliability of the helmet installation of the ultrasonic head.

This invention belongs to the field of hard tissue pathology slide preparation technology and discloses an embedding device for easy fixation of hard tissue. It includes an embedding layer with a curling deformation function, and several fixing units are provided on one side of the embedding layer. When the embedding layer is curled into a ring, the fixing units surround the hard tissue and compress and fix it. This invention uses the curling deformation of the embedding layer to drive the fixing units to distribute around the hard tissue, compressing and fixing it. The embedding layer is placed in an embedding bottle to maintain its curled shape. This fixation method is simple and convenient, and can fix biological bone tissue in the desired position and direction. The embedding layer and fixing units are made of polypropylene, which has stable chemical properties, is not prone to chemical reaction with the embedding liquid, and has relatively soft physical properties, making it less likely to cause defects in the embedded block. It also does not affect subsequent cutting, deplasticizing, or other processes.

The present application relates to the technical field of chest drainage tube fixer, especially to a multi-angle adjustable chest drainage tube fixer, which comprises an adjusting main frame, the bottom end of the adjusting main frame is provided with an angle adjusting mechanism, the bottom end of the angle adjusting mechanism is provided with a pasting fixing mechanism, and one side of the adjusting main frame is provided with a displacement mechanism. The present application is manually rotated by an operator, the screw rod is rotated, the threaded fixing cylinders at both ends are driven to move close to or away from each other, the movable connection of the support arm and the pasting and adsorbing assembly is matched, the angle of the drainage tube on the adjusting main frame and the clamping mechanism is flexibly adjusted, the adjusting range is accurately controlled by observing the corresponding scale on the arc scale on the scale needle in the observation slot during the adjusting process, the multi-angle adjustment is carried out according to the patient position, the incision position and the drainage requirement, the drainage tube is prevented from being bent or pressed, the smooth drainage is ensured, and the discomfort of the patient caused by the pipeline pulling is reduced.

This invention discloses an anti-bend medical catheter fixator, relating to the technical field of catheter fixation. It includes an adhesive strip with a first and second adhesive strip. A catheter fixation component is fixed to the adhesive strip. The multi-point fixation design of the adhesive strip, the first adhesive strip, and the second adhesive strip significantly improves overall stability and avoids the loosening issues common with traditional single-point fixation. The catheter fixation component integrates a first half-ring, a second half-ring, and a limiting member through a mounting plate to form a triple-locking structure, which firmly clamps the catheter and prevents axial displacement. The anti-bend fixation component connects multiple buckles via a connecting strap, forming a segmented support network when the catheter passes through the joint movement area. When the joint bends, causing a change in the distance between the fixation patch and the adhesive strip, the buckles work together to disperse the catheter deformation into a uniform, large-arc bend, completely eliminating the risk of right-angle bending common in traditional fixation methods.

To address such a problem that in a case of distal clavicle fractures requiring osteosynthesis, even when being fixed using a hook plate or tension band fixation, problems such as rotator cuff tears, restricted range of motion, acromial resorption, or insufficient fixation strength have been observed.SOLUTION: A distal end of a plate stem and a bent part allow for fixation of a distal bone fragment to a proximal bone fragment. When a locking screw is fixed within a bone marrow through a hole in the bent part, complications associated with hooks of conventional hook plates are eliminated and an effect similar to that of a hook plate is achieved. In addition, a tension band fixing method, etc. can be performed through the hole of the bent part. This solves problems such as the rotator cuff tears, restricted range of motion, acromial resorption, or insufficient fixation strength. It can also be applied to fractures other than acromioclavicular joint dislocation and distal clavicle fractures.SELECTED DRAWING: Figure 5

The application relates to the field of medical devices, and discloses a delivery system installation method, a fixing clamp, a leaflet fixing method and a delivery system. The delivery system installation method comprises the following steps: the first end of a first control wire is inserted into a first opening and then out of a second opening, the third end of a second control wire is inserted into a second opening of an anchoring tube and then out of the first opening, the third end of the second control wire is pulled to make the fourth end of the second control wire enter a hollow cavity from the second opening, and the fourth end is ensured to abut against the inner wall of the anchoring tube at the first opening; the distal end of a core wire is inserted into the proximal end of the anchoring tube and axially moves along the hollow cavity until the distal end of the core wire is out of the distal end of the anchoring tube and the second end at the second opening is pressed against the inner wall of the anchoring tube, and the fourth end at the first opening is pressed against the inner wall of the anchoring tube; and the distal end of the core wire out of the anchoring tube is connected with the fixing clamp.

The utility model relates to the field of medical monitoring products, and discloses a pacemaker postoperative multifunctional strait-jacket, which comprises a strait-jacket body and a top side, a bag is arranged at the top end of the front side in the strait-jacket body, a salt bag is arranged in the bag, and fixing straps are arranged at the left and right ends of the top side of the two strait-jacket bodies. Second restraint straps are arranged at the bottom ends of the left sides and the right sides of the two strait-jacket bodies, a first restraint strap is arranged on the top side of the second restraint strap on the left side, and hidden buttons are arranged on the rear sides of the fixing straps, the first restraint strap and the second restraint straps. According to the utility model, an incision is healed as soon as possible, infection is avoided, secondary injury to a wound of a patient caused by poor excision force between a salt bag and skin and difficulty in fixation is avoided, the healing rate of the patient is reduced, the strait-jacket is applicable to patients with different body types, and uncomfortable wearing of the patient caused by a traditional non-adjustable fixing mode is avoided; after being taken out, the salt bag cannot continue to play a restraining role and is inconvenient to put on and take off, and experience is uncomfortable.

The invention discloses a fixing method for a medical anesthesia pain-relieving pump, and relates to the field of medical instruments, and the fixing method comprises the following steps: a1, when a device main body is fixed on an infusion support, a placing disc can be fixed on the infusion support by using a clamping plate I, a clamping plate II, a screw rod I and a nut; during use, the pain relieving pump can be limited and fixed by using the fixing mechanism I or the fixing mechanism II according to actual requirements, so that the pain relieving pump is prevented from rolling to pull an injection part of a patient to cause discomfort of the patient; meanwhile, when the device is installed, the device body can be fixed to an infusion support on one side of a sickbed through a first clamping plate, a second clamping plate, a first screw and a nut, or the device body is fixed to a sickbed guardrail through a first connecting frame, a supporting plate, a first spring and a first telescopic rod, and therefore a user can conveniently select a proper installation mode according to actual needs; installation is convenient, and applicability is high.

The invention provides a minimally invasive fixation method, system and terminal for tarsometatarsal joint internal fracture based on reinforcement learning, and the method comprises the steps: carrying out the preprocessing of collected tarsometatarsal joint three-dimensional CT data and real operation screw scanning point cloud data, and importing the obtained tarsometatarsal joint three-dimensional model data and operation screw three-dimensional model data into Unity; and acquiring a three-dimensional tarsometatarsal joint and a three-dimensional screw in the operation simulation scene, calculating an initial implantation point position of the three-dimensional screw and an implantation target area, and obtaining an optimal orientation for guiding the three-dimensional screw to be implanted so as to determine an optimal implantation path of the three-dimensional screw. The problem that in the prior art, the continuous three-dimensional structure characteristics of the fracture in the tarsometatarsal joint are ignored, and consequently the screw implantation path planning result is not accurate is solved. According to the method, the optimal implantation path of the screw-fixed tarsometatarsal joint internal fracture is found in the three-dimensional model on the basis of reinforcement learning in combination with a clinical experience design optimization algorithm, and the operation precision and safety are greatly improved in actual clinical application.

A vestibular electrode fixation methodology and device for implantation in a subject is provided. The methodology includes making an opening through both a stapedial footplate and the oval window of the subject, through which the electrode is inserted. The electrode may pass through a flange which contacts the posterior and anterior crus, securely fixing the electrode in a predetermined position so as to stimulate the sensory epithelia in the vestibule. The flange may sit on the stapedial footplate.

A fixation member (108), an orthopedic device using a fixation member, or a method for using the same includes fastener elements (142) that are integrally formed with the fixation member that can be attached to the orthopedic device without adhesive. The fixation member may be secured to the orthopedic device through welding and / or a mechanical connection. The welding attachment may involve a weld created through various processes, including a heat staking process.

A method of fixation of an intraluminal device to an inner surface of a hollow organ, an intraluminal fixation system and intraluminal fastener includes positioning a distal end portion of a shaft guide adjacent the outer surface of the hollow organ. A contact distribution member is formed by feeding at least the distal first portion of a flexible shaft through the shaft guide out the distal end portion of the shaft guide. The first portion of the flexible shaft has elastic properties that allow it to be collapsed to fit within the shaft guide and self-expand to a first memory-induced configuration when deployed from the distal end portion of the shaft guide outside of the hollow organ. A biasing member is biased toward the contact distribution member thereby biasing the intraluminal device toward the hollow organ wall.

This invention relates to a novel intraocular lens (IOL) fixation device, comprising an implant having an anchoring portion for anchoring within the eyeball wall; a docking portion pre-connected to one end of the implant and connected to the loop of the IOL; and a traction portion pre-connected to the other end of the implant for pulling the implant from the lateral aspect of the sclera to a target position. This invention achieves "knotless" fixation, fundamentally avoiding suture-related complications. Compared to traditional transscleral suture fixation, this invention uses a mechanical anchoring method where a polymethyl methacrylate rod is heat-fused to form a flange, completely eliminating the need for knots on the scleral surface. This eliminates the risks of scleral ulceration, endophthalmitis, chronic inflammation, and late-stage lens dislocation caused by suture wear, corrosion, and exposure, significantly improving long-term stability.

This invention belongs to the field of medical and nursing technology, specifically disclosing a catheter fixation frame for neurosurgical care. It includes a support plate with a guide clamp on its lower wall and two rotating arm assemblies rotatably mounted on its upper wall. Each rotating arm assembly has a Bernoulli suction cup at its end. A control cylinder is mounted on the upper rotating arm assembly. The two rotating arm assemblies are connected to the outer wall of the control cylinder via ventilation tube one and ventilation tube two, respectively. An air inlet pipe is located at the upper end of the control cylinder. The control cylinder contains a pneumatic alternating sealing mechanism, which includes a power transmission component and a sealing transmission component. This invention utilizes airflow into the control cylinder to achieve alternating ventilation through ventilation tube one and ventilation tube two via the pneumatic alternating sealing mechanism. This allows the two sets of Bernoulli suction cups to alternately adhere to the patient's skin, effectively guiding and fixing the catheter, preventing tangling and bending, and solving the problems of skin discomfort and catheter collapse caused by traditional fixation methods.