427 results about "Anastomosis" patented technology

The invention relates to the technical field of medical image processing and medical aid decision making, in particular to an internal arteriovenous fistula intelligent planning method and system based on haemodynamic simulation, and the method comprises the steps: firstly obtaining three-dimensional space anatomical data of arteriovenous blood vessels of a patient, and constructing a blood vessel tree three-dimensional model; and inputting the blood vessel parameter data and the hemodynamic parameter data at different blood flow rates into a deep learning model to obtain dynamic shear force data of the anastomotic stoma, and comparing the dynamic shear force data of the anastomotic stoma with preset optimal anastomotic angle data to determine an optimal anastomotic angle. And performing internal arteriovenous fistula operation type three-dimensional modeling on the three-dimensional model of the vascular tree by combining the optimal anastomosis angle to obtain a three-dimensional internal arteriovenous fistula model, and performing a virtual operation based on the model to obtain virtual operation process data and a postoperative hemodynamic state evaluation result. The success rate of one-time operation of internal fistula can be increased to 85%-90% from 60%-65% in the prior art.

The invention discloses a mouse spinal cord flexible electrode and a stimulation parameter optimization method, and relates to the technical field of parameter optimization. The mouse spinal cord flexible electrode comprises a soluble insertion layer, a gradient substrate layer, spinal cord anastomosis ribs, a conductive snakelike net, a hemispherical touch dot matrix, a microfluidic layer, an optical waveguide layer and a top packaging layer; the soluble insertion layer is photo-crosslinked PEG-DMA with the thickness of 5-25 m, the Young modulus is kept within the range of 0.8-1.5 GPa before implantation, and the soluble insertion layer is hydrolyzed in cerebrospinal fluid within 0.5-3 hours after implantation and completely falls off; the spinal cord anastomosis rib comprises an expandable S-shaped folding structure arranged on the upper surface of the gradient substrate layer, the distance between every two adjacent ribs ranges from 80 m to 200 m, the height of the folded state is not larger than 15 m, the height of the unfolded state ranges from 15 m to 40 m, and the spinal cord anastomosis rib is used for forming a cerebro-spinalfluid bypass groove extending in the longitudinal direction of the spinal cord on the surface of the dura mater. According to the invention, the positioning precision, safety and long-term efficiency of mouse spinal cord electrical stimulation can be effectively improved.

The invention relates to the field of medical instruments, in particular to a nail anvil device and an anastomat, the nail anvil device comprises a nail anvil main body, the nail anvil main body comprises a nail anvil head and a nail anvil rod arranged on the nail anvil head, the nail anvil head is provided with a nail anvil surface with a plurality of nail pits, and the axis of the nail anvil rod is perpendicular to the nail anvil surface; the intestinal tract protection assembly is located on the side, away from the nail anvil face, of the nail anvil head and comprises a similar casing and a clamp, the similar casing is loaded on the nail anvil body, the similar casing is tubular, and the clamp can clamp the similar casing so that the similar casing can be fixed in the intestinal tract. According to the nail anvil device with the intestinal tract protection assembly, the intestinal tract protection assembly is placed in the intestine in the anastomotic operation process, the operation time is shortened, the operation process is simplified, and postoperative complications such as anastomotic leakage are reduced.

The utility model provides an integrated stent-type artificial blood vessel which comprises an artificial blood vessel part comprising an artificial blood vessel main branch used for being arranged corresponding to an ascending aorta of a human body; the covered stent comprises a covered stent trunk and a left subclavian artery branch arranged beside the covered stent trunk and communicated with the covered stent trunk; the bendable connecting tube section is arranged between the artificial blood vessel part and the covered stent, the bendable connecting tube section comprises a main tube section and a side short tubular joint which is arranged on the side of the main tube section and communicated with the main tube section, and in the main blood flow direction of the artificial blood vessel, the near end of the main tube section is connected with the main branch of the artificial blood vessel; the far end of the main pipe section is connected with the near end of the artificial blood vessel main branch, and the axial height of the side short pipe-shaped connector is smaller than that of the left subclavian artery branch. The number of branch arteries needing to be dissociated in an operation is reduced, then dissociation anastomosis time is saved, circulation stopping time is shortened, protection on brain tissue is enhanced, and postoperative rehabilitation of a patient is facilitated.

The invention discloses a self-breaking outer drainage tube, and relates to the technical field of medical instruments, the self-breaking outer drainage tube comprises a tube body, and the tube body comprises a drainage part, a breaking part, a leading-out part and a puncture part; the drainage part and the fracture part are both made of degradable materials; the hole wall thickness of the circulation hole at the fracture part is smaller than the hole wall thickness of the circulation hole at the drainage part; during surgical operation, the degradable inner drainage part is placed in the pancreatic duct, the fracture part crosses the anastomotic stoma by 7-8 cm and crosses the biliary-intestinal anastomotic stoma, and the leading-out part walks in the enteric cavity to a proper position, penetrates out of the intestinal wall and is led out of the body through the abdominal wall. Cutting the puncture part to expose the outlet of the circulation hole, and discharging the body fluid through the circulation hole; after a certain period of time after the operation, the fracture part is automatically fractured under the action of pancreatic juice, the leading-out part is pulled out, the degradable drainage part continues to be degraded in the body and maintains the drainage function, and finally the drainage part is absorbed by the body or discharged out of the body without being taken out through the operation.

The invention relates to the technical field of medical instrument research and medical safety devices, in particular to an over-thick tissue percussion prevention type anastomat based on secondary percussion prevention and a method. An over-thick tissue percussion prevention type anastomat based on secondary percussion prevention comprises a nail bin assembly which comprises a nail abutting base and a nail bin base used for installing a nail bin with a nail pushing sliding block, and a safety boss and a first elastic piece are arranged on the side, close to the nail bin base, of the nail abutting base; the percussion assembly comprises a cutting knife which is pressed down under the elastic force action of a first elastic piece, and the cutting knife is provided with a first guide boss and an unlocking part; when the nail abutting base and the nail bin base are closed and the cutting knife is pressed downwards, the moving path of the first guide boss passes through the safety boss. And the unlocking part is propped by the nail pushing slide block so as to lift and release the cutting knife. According to the scheme, secondary percussion of a used nail bin and mistaken percussion caused by too thick tissue or insufficient closing of a nail bin assembly can be avoided, and safety and reliability of an anastomosis operation are improved.

The invention discloses a microfluidic system for studying prevention and treatment of internal fistula dysfunction by hand pump intervention, and belongs to the technical field of cytomechanics biology microfluidic experimental devices for internal arteriovenous fistula health and rehabilitation. The system comprises a feedback control system, a fluid loading system, a multi-channel optical imaging system, a micro-fluidic chip, a detection system and a post-load system. The micro-fluidic chip is designed into a Y-shaped structure based on the geometric structure of the AVF. The fluid loading system is combined with the feedback control system and the after-load system, and WSS distribution characteristics corresponding to the endothelial surface of the AVF anastomosis position under different hand pump intervention conditions can be reproduced at the intersection of the Y-shaped chips. The system can accurately and comprehensively reproduce the distribution characteristics of the WSS on the endothelial surface at the AVF anastomosis position under the condition of hand pump intervention with different intensities and frequencies, can simply and intelligently carry out cell mechanics biology experiments, and provides a foundation for revealing a potential mechanics biology mechanism for preventing and treating internal fistula power loss through hand pump intervention. And a miniaturized, objective, standardized, quantitative and automatic experiment platform is provided.

An endoscopic magnetic anastomosis system, devices and method for forming an anastomosis. The endoscopic magnetic anastomosis system includes an endoscopic assembly, a video processor console, a magnet detector, and a magnetic navigation console. The endoscopic assembly includes an endoscope, an adjustable snare mechanism, an outer sheath, and a magnetic implant assembly. The adjustable snare mechanism includes a snare assembly. The snare assembly passes through a snare channel in the endoscope and includes a snare catheter and a snare wire passing through the snare catheter. The snare is used to selectively tighten and release the magnetic implant assembly disposed at one end of the endoscope.

The invention discloses a self-adaptive control system based on a cutting anastomat, and relates to the technical field of medical instrument control, and the system comprises an intelligent hardware module which is used for analyzing a motion control instruction based on an MCU (Microprogrammed Control Unit), receiving a PWM (Pulse Width Modulation) signal by a DC motor driver, and starting a tool bit to advance according to a preset acceleration curve; the TACS module analyzes the tissue state based on sensor data and dynamically adjusts the rotating speed and cutting force of a motor; and the man-machine interaction visualization module is used for carrying out visual and clear graphical and digital presentation, including electric quantity, anastomosis pressure and cutting progress, on the basis of an electronic display screen. The MCU serves as the core, the tool bit is controlled to advance according to the preset curve through PWM signals, it is ensured that the cutting action is accurate and stable, the equipment loss and the tissue damage risk are reduced, the TACS module analyzes the tissue state in real time and dynamically adjusts the motor rotating speed and the cutting force through a sensor, the cutting effect can be ensured for tissue with different hardness and thickness, and the cutting efficiency is improved. Healthy tissues can be protected, and the operation safety and efficiency are improved.

A magnetic compression anastomosis device comprises a first multipiece internal vertebrae support structure including a first set of magnets attached to an outward-facing side of the first multipiece internal vertebrae support structure; and a second multipiece internal vertebrae support structure including a second set of magnets attached to an outward-facing side of the second multipiece internal vertebrae support structure, wherein the first and second multipiece internal vertebrae support structures are attached together in a sandwich configuration with an inward-facing side of the first multipiece internal vertebrae support structure facing an inward-facing side of the second multipiece internal vertebrae support structure and the magnets on the outward-facing sides of the magnetic compression anastomosis device.

A delivery system to deliver an annular implant to a body lumen and stabilise the annular implant during deployment and positioning in the body lumen is described. The delivery system comprises a delivery arm, a first tethering element comprising a first tethering arm to releasably tether a first part of the self-expansible implant to the delivery arm, and optionally a second tethering element comprising a second tethering arm to releasably tether a second part of the self-expansible implant to the delivery arm. The delivery system comprises a coupling module actuatable to untether the first tethering arm and optional second tethering arm to release the implant from the delivery arm in-vivo. The annular implant may be an anastomosis ring or a gastrointestinal tract window. A method of using the delivery system to deliver an annular implant to a body lumen and stabilise the annular implant during deployment and positioning in the body lumen is described.

The invention discloses a multi-mode physical sign restraint strap remote monitoring system, and relates to the technical field of medical monitoring, the system is composed of a plurality of functional modules, and the system comprises a data acquisition module for acquiring monitoring data of a patient in real time, the monitoring data comprising physical sign data and medication data of the patient; the time sequence association construction module is used for preprocessing the monitoring data to obtain an effective physical sign data subset, performing dynamic time warping on the effective physical sign data subset based on a DTW algorithm to obtain an optimal time sequence anastomosis path, performing parameter estimation on the optimal time sequence anastomosis path by utilizing a linear regression model, and constructing a time sequence association trend of medicine-physical sign response; the intelligent analysis module is used for marking key nodes based on the time sequence correlation trend of the drug-physical sign response and performing multi-dimensional evaluation on the drug effect to obtain a drug effect evaluation value; and the drug use decision module is used for respectively carrying out transverse comparison and longitudinal analysis based on the drug effect evaluation value.

The present disclosure discloses a staple cartridge, a staple cartridge assembly, and an anastomosis device. A feeding groove of a staple cartridge provided in the present disclosure is arranged to extend in the first predetermined direction. Multiple staple slot groups are distributed on both sides of the feeding groove along the slot-width direction of the feeding groove, and the number of staple slot groups on both sides of the feeding groove is different.

The utility model relates to a large area contact type thread type degradable magnesium alloy aortic blood vessel anastomat, including the conical inner ring, conical outer ring and sleeve outer ring that set gradually from inside to outside, be provided with blood vessel clamping space between the conical inner ring and conical outer ring, it is the thread cooperation between conical outer ring and sleeve outer ring, adjust the size of blood vessel clamping space through the rotation sleeve outer ring, sleeve outer ring. The utility model simple structure, reasonable in design, convenient to use, adjust the size of blood vessel clamping space through the rotation conical outer ring and sleeve outer ring to fixed blood vessel, realize blood vessel anastomosis fast, avoid the mode of the traditional everted type through end face combination simultaneously, greatly increase the contact area between blood vessel and prevent the occurrence of blood leakage.

The invention relates to a medical first-aid instrument. The efficient bleeding stopping suite for the broken limb comprises an anastomosis cylinder and connecting assemblies arranged at the two ends of the anastomosis cylinder and used for being combined with the broken end. The center of the anastomosis cylinder is provided with a funnel-shaped center cone which is gradually shrunk towards the telecentric end, and the telecentric end of the center cone and the anastomosis cylinder are coaxially provided with a center cylinder; the central cylinder is communicated with the central cone, and a control valve is arranged on the central cylinder; an anastomosis needle used for being inserted into a broken limb artery is further arranged at the distal end of the center cylinder. Targeted rapid hemostasis can be effectively achieved on the whole, stable temporary blood supply is efficiently constructed, and the replanting survival rate of the fractured limbs is remarkably improved.

The utility model provides a tubular anastomat, and relates to the technical field of medical instruments. The tubular anastomat comprises an anastomosis assembly, an osculating assembly and a connecting assembly, a first anastomosis piece in the anastomosis assembly is arranged on the inner side of a second anastomosis piece, a leakage-proof barrel is arranged on the inner side of the first anastomosis piece, and the near end of the leakage-proof barrel extends out of the near end of the first anastomosis piece; a first osculating piece in the osculating assembly is arranged on the inner side of a second osculating piece, and part of the connecting assembly can be limited to the osculating assembly. The osculating assembly is pushed in the direction close to the anastomosis assembly, so that the osculating assembly is arranged at the near end of the leakage-proof cylinder in a sleeving manner, and the other part of the connecting assembly is connected to the anastomosis assembly in a limiting manner, so that the first intestinal tract and the second intestinal tract are anastomosed between the anastomosis assembly and the osculating assembly. According to the tubular anastomat, the anastomosis effect can be improved, and the probability that the first intestinal tract and the second intestinal tract are broken due to separation between the anastomosis assembly and the osculating assembly is reduced; meanwhile, the leakage-proof effect is improved, and the risk of anastomotic stoma leakage is reduced.

This utility model discloses an anti-accidental activation structure for a stapler, including a stapler body and a cutting blade disposed within the stapler body; a protective lock is rotatably mounted at the tail end of the stapler body; a limiting mechanism is provided on the inner side of the protective lock to limit the tail end of the cutting blade; an anti-rotation mechanism is provided on the protective lock to lock the stapler body; and a reset mechanism is provided between the protective lock and the stapler body for resetting the protective lock after accidental activation. The protective lock, limiting mechanism, anti-rotation mechanism, and reset mechanism of this utility model work together to form a three-layer anti-accidental activation protection; the limiting mechanism directly locks the cutting blade position to prevent accidental activation; the anti-rotation mechanism ensures the protective lock is stably locked; and the reset mechanism automatically restores the protective lock to its initial position after accidental activation, thereby avoiding damage to the stapler due to misalignment of the protective structure after docking with the instrument.

The invention discloses an intestinal microneedle anastomosis stent with an antibacterial function and a preparation method and application thereof, which can effectively and physically isolate an anastomotic stoma from intestinal contents and provide a relatively clean local environment for healing of the anastomotic stoma. The microneedle anastomotic stent is fixed at the anastomotic stoma, so that the tension at the anastomotic stoma can be further reduced, and the occurrence of anastomotic stoma leakage caused by overlarge tension is avoided; the microneedle layer on the surface of the stent can realize in-situ long-acting slow release of berberine hydrochloride (BBH) on the superficial layer of an anastomotic stoma, so that the drug utilization rate of the BBH is improved, the initial inflammation of the anastomotic stoma can be effectively reduced, and the anastomotic stoma can be regulated and controlled to be better healed. Animal experiment results prove that the implantation of the microneedle anastomosis stent can effectively reduce inflammatory cell infiltration of local tissues, reduce anastomotic stoma arrangement and regulate the anastomotic stoma to heal smoothly.

The invention relates to the technical field of rectum irrigators, in particular to a rectum irrigator used during rectum anastomosis, which comprises a first cleaning structure and a second cleaning structure, and the second cleaning structure is fixedly arranged on the first cleaning structure; the first cleaning structure is used for cleaning treatment, the injection part is communicated with the spraying pipe through a connecting pipe and a guide pipe, and the auxiliary injection mechanism is communicated with the injection pipe through a butt joint pipe and used for liquid supplementing treatment; the second cleaning structure is used for strengthening cleaning treatment, an inflation pipe communicates with a first connecting air pipe through a butt-joint communicating base and a second connecting air pipe, the first connecting air pipe communicates with a butt-joint connecting air pipe and an air bag, the size of a channel in the spraying treatment pipe is controlled, and therefore pressurized cleaning is conducted, and a metal wire and a lifting head change a flow channel in the control mechanism; and large-flow cleaning treatment is carried out. Through the arrangement of the structure, rectum flushing work is facilitated.

The present invention relates to the technical field of anastomosis devices, and in particular to a swinging mechanism for anastomosis devices and an anastomosis device thereof, the swinging mechanism comprising an actuator seat, an extension tube, a push rod and a swinging seat; the rear end of the swinging seat has a left groove and a right groove, the front end end of the left push rod has a left hook, and the front end end of the right push rod has a right hook; the present invention utilizes the left hook and the right hook to cooperate with the left groove and the right groove respectively, on the one hand, so that during the swinging of the actuator seat from the center position to the left extreme position or the right extreme position, only a single push rod applies force to the actuator seat, so as to prevent the extension tube from being bent and deformed due to excessive force on the actuator seat at the left extreme position and the right extreme position, thereby improving the operation accuracy during surgery; on the other hand, the two push rods always keep in contact with the swinging seat, so that the actuator seat will be constrained by the two push rods during the swinging process between the left extreme position and the right extreme position, thereby ensuring the stability of the actuator seat during the rotation process.

The present disclosure relates to a device assembly and a method for treating heart failure by normalizing elevated blood pressure in the left atrium of a heart of a mammal. Disclosed herein is a transcatheter interatrial septum excision device assembly configured to create a sized interatrial aperture between the right and left atria of a heart for the relief of elevated left atrial pressure. The device assembly comprises a delivery catheter, a tissue stabilizer attached to a first catheter having a central lumen and a penetrating tip that permits passage of a guidewire, and a cutter attached to a second catheter having a central lumen that permits passage of the first catheter. Alternative configurations comprise a (third) catheter having a central lumen that permits passage of the aforementioned components to and from the right atrium, a tissue retention mechanism and an optional coaxial alignment mechanism.

The present application relates to a kind of anastomosis equipment.The anastomosis equipment includes repair assembly and anastomat;Repair assembly includes at least one patch, various the patch is respectively used for different operation;Anastomat includes shaft assembly, anvil and nail bin, anvil and nail bin are connected to shaft assembly, anvil and nail bin can be relatively closed, various patch is used to install in anvil or nail bin, anvil and nail bin are configured to operate to anastomosis position, and patch is applied to corresponding anastomosis to achieve occlusion and reinforcement by operation.This application at least one patch, so as to cooperate with anvil and nail bin, so that various patch is adhered to corresponding anastomosis under its corresponding operation, so as to reduce the proportion of stomal fistula and bleeding at incision, improve the reliability and adaptability of anastomosis equipment.

1. Name of the product in this design: Labia Fixation Base (for Labia Cutting Anastomosis). 2. Purpose of this design: It belongs to medical devices and is used to fix the labia when cutting and suturing them. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The present invention relates to a complex surgical device for carrying out an anastomosis in the intestine including:a— a protective device (5) comprising an anchor element consisting of a stent (1) and a flexible outer sheath (2), andb— an introducer (10) comprising at least a first deformable guide tube (12),characterized in that the downstream end of said outer sheath is connected to said first guide tube (12) or to a first connecting piece (11), said outer sheath (2) being folded inside said first deformable guide tube (12), said stent being held in radial compression inside said first deformable guide tube.

Provided is an anastomosis set for anastomosing a first anastomotic target portion of a first tubular organ and a second anastomotic target portion of a second tubular organ. The anastomosis set includes: a first anastomosis device connected to the first anastomotic target portion and having a first extension through-hole penetrable by the first tubular organ; and a second anastomosis device connected to the second anastomotic target portion and having a second extension through-hole penetrable by the second tubular organ. The first anastomosis device is connected to the second anastomosis device, allowing the first anastomotic target portion and the second anastomotic target portion to be anastomosed to each other.

The invention relates to the technical field of surgical instruments, in particular to an anorectal anastomat with a function of selectively excising mucosal tissues on hemorrhoids, which comprises a handle and a hard tube, the hard tube is fixedly mounted at the front end of the handle, and an air tube joint connected with a negative pressure vacuum pump is arranged at the rear end of the handle. The air pipe connector is connected with the hard pipe through a connecting pipe penetrating through the interior of the handle, and an air channel opening and closing button for controlling opening and closing of a valve on the connecting pipe is arranged on the right side wall of the handle. A knotting rope ring is arranged at the position of a pipe opening of the hard pipe, the two ends of the knotting rope ring are connected to the pipe opening of the hard pipe and the kneading handle respectively, and the kneading handle is rotationally connected to the handle. A pipe head is rotationally connected to a pipe opening of the hard pipe through a steering mechanism, the steering mechanism is sleeved with a corrugated hose, the two ends of the corrugated hose are in sealed connection with the pipe head and the hard pipe respectively, and a control button of the steering mechanism is arranged on the left side wall of the handle. Through steering positioning, negative pressure adsorption and selective ligation anastomosis mechanisms, the anorectal minimally invasive surgery is safer, more accurate and more economical.

A device, assembly and method for end-to-side connection to anatomical tissue is disclosed. The device includes a tissue connection stent having a proximal closure to create and maintain a substantial degree of hemostasis. The assembly and method include using a tubular graft member coupled to a plurality of distally projecting tines extending from a distal aspect of the graft that couples the graft to an abluminal wall surface of an anatomic passageway, and the tissue connection stent is then introduced through a central lumen of the graft member, into and through an opening created in the wall of the anatomic passageway, and the tissue connection stent is deployed within the opening and a distal flange of the stent is seated against a luminal wall of the anatomic passageway while the proximal closure is maintained in a closed position until it is deployed to allow fluid flow through the stent.

1. Name of the product in this design: Anastomosis device (inserted fully endocavitary electrically powered tubular type - straight). 2. Application of this design: for laparoscopic anastomosis of esophagus and jejunum, intestine to intestine, or thoracoscopic anastomosis of esophagus and jejunum or esophagus and stomach within the thoracic cavity. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. Other situations requiring explanation: Part A is made of transparent material.