559 results about "Anastomosis" patented technology

Set forth are vascular valves and servovalves and methods of using the same that may be positioned in the circulatory system without interrupting blood flow to facilitate solid organ transplantation so as to reduce graft organ anoxia and degradation before and after harvesting and storage, thereby minimizing late-term cardiac allograft vasculopathy as a major cause of graft failure. Along the urinary tract, bypassing bladder-generated urge sensation by diverting urine directly from the ureters to a neobladder or collection bag alleviates intractable incontinence, nocturia, urethral syndrome, overactive bladder, dysuria, or frequency. Where the lower tract is missing, a prosthesis can thwart disease and preclude the degenerative metaplastic transition to carcinoma risked when gut is used to construct a conduit for urine, a neobladder, and / or high-maintenance stoma. Druglines to valves and servovalves can directly pipeline-target medication to nidi, anastomoses, or any other trouble spots.

The invention relates to the technical field of medical care, and provides a patient risk dynamic assessment system in medical care teaching, which comprises a data acquisition module used for acquiring multi-modal image data of a postoperative gastric organ anastomosis area of a patient; the data processing module is used for preprocessing the multi-modal image data, establishing a three-dimensional model of organs around the anastomotic stoma and analyzing edge features of the anastomotic stoma; and the risk assessment module is used for constructing an anastomotic stoma state assessment model and outputting comprehensive scores of an anastomotic stoma blood perfusion condition, a tissue metabolism abnormal probability, an anastomotic stoma leakage risk, anastomotic stoma scar hyperplasia and healing trend prediction. A quantum dot fluorescence image, a Raman spectrum image, a CT image and an intraoperative high-definition white light image are enhanced through the system and evaluated, a nursing scheme is obtained in combination with opinions of medical staff, and compared with manual evaluation of the medical staff, the accuracy is higher, the feasibility of the nursing scheme is higher, and medical nursing use is facilitated.

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 provides an endoscope anastomat stroke compensation method which can be applied to the technical field of medical instruments. A deflection system of the endoscope anastomat comprises a first stroke sensor, a percussion system of the endoscope anastomat comprises a second stroke sensor, and the method comprises the steps that the first stroke sensor is used for detecting the bending angle of a flexible knife handle in a bending joint in the cutting process; based on the bending angle, the change of the length of the flexible knife handle in the bending joint is calculated, and the forward moving amount of the cutting knife is obtained; a second stroke sensor is used for detecting the current stroke of a driving device at the rear end of the anastomat; and based on the cutting knife forward movement amount and the preset stroke of the anastomat rear-end driving device, the current stroke of the anastomat rear-end driving device is adjusted so as to compensate the stroke of the endoscope anastomat. By arranging the stroke sensor, measuring the forward moving amount of the cutting knife and the current stroke of the driving device at the rear end of the anastomat, and compensating the stroke of the endoscope anastomat, the anastomosis length of the anastomat at various bending angles is stable and consistent, the anastomosis frequency is reduced, and the use cost is reduced.

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.

Provided is an anastomosis arrangement for joining two opposite stumps of a tubular organ in a streamlined anastomosis procedure. The arrangement includes a pair of axially symmetric stump-coupling members that accommodate pairs of counterpart suturing needles, linked together by common suturing threads, and manipulable by a needle-manipulation element to extract the needles tips from the stump-coupling members for piercing walls of the stump.

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.

A magnetic compression anastomosis device comprises a plurality of interconnected vertebrae including a first vertebra and a second vertebra, wherein each of the first vertebra and the second vertebra is a multipiece vertebra comprising a magnet at least partially encapsulated by a vertebra skin, and wherein the first vertebra and the second vertebra are interconnected by a cylindrical roller and at least one flex element, the roller and the at least one flex element at least partially encapsulated by the first vertebra skin and the second vertebra skin, the roller configured to allow the first and second vertebra to pivot through a predetermined range of rotation in a device plane between at least a delivery configuration and an assembled configuration while constraining movement in other degrees of freedom, the at least one flex element biasing the first and second vertebra toward the assembled configuration.

The utility model provides a percussion structure, a nail bin assembly and a surgical anastomat, the percussion structure is used for the nail bin assembly of the surgical anastomat and can be driven to move in the axial direction of the surgical anastomat, the percussion structure comprises a base part and a nail pushing part arranged on the base part, and the nail pushing part comprises a driving part and an elastic part; the driving part is at least partially located on the far end side of the elastic part, when the elastic part is in the initial state, the highest point of the elastic part is not higher than the highest point of the nail bin body, and the elastic part is configured to elastically deform and reduce the height when being driven to move in the far end direction. By the adoption of the percussion structure, when the anastomat is percussed, the anastomosis nail can be assisted to be better formed in a closed mode and separated from the nail hole.

The degradable nested anastomosis device is characterized in that an annular ridge protruding in the radial direction is arranged on the outer portion of an inner cylinder, a lock seat is arranged on the portion, close to the rear end side of the annular ridge, of the outer portion of the inner cylinder, a first wall section is formed between the front end of the outer portion of the inner cylinder and the annular ridge, and a second wall section is formed between the annular ridge and the lock seat; the outer sleeve is provided with a base sleeve and an elastic claw extending from the base sleeve to the rear end, a lock head is arranged at the rear end of the elastic claw, a closing opening is formed in the front end of the base sleeve, and the outer sleeve can be nested in a nesting position outside the inner barrel from the front end of the inner barrel to the rear end, so that the closing opening abuts against the front end of the inner barrel in the axial direction, and the interior of the base sleeve is attached to the outline of the first wall section of the inner barrel; a cavity is formed between the interior of the elastic claw and the second wall section of the inner cylinder, and the outer sleeve can rotate relative to the inner cylinder at the nesting position, so that the outer sleeve and the inner cylinder are locked through the lock head and the lock seat. According to the invention, the anastomosis sealing performance and the anastomosis strength between the broken ends of the two blood vessels are ensured, and secondary operation for taking out is not needed.

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 an extravascular stent, which belongs to the technical field of intravascular stents, and comprises: a fixed seat comprising a fixed support and a belt body; the fixing support is suitable for being nested on a first blood vessel adjacent to an anastomotic stoma, a fixing part is arranged at one end of the fixing support, and a through hole is formed in the fixing part; one end of the shoelace body is fixed at the other end of the fixed support, and the other end of the shoelace body can penetrate through the through hole; the fixing piece is provided with a fixing structure capable of fixing the belt body on the through hole; the sleeve is connected to the fixed support, and the sleeve is suitable for being arranged on the periphery of the second blood vessel close to the anastomotic stoma in a sleeving mode. The extravascular stent is simple in structure, the fixing position of the belt body on the fixing piece can be adjusted according to the diameters of different first blood vessels, the fixing support of the extravascular stent can be firmly fixed to the anastomotic stoma position all the time, and applicability is higher.

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 invention relates to the technical field of medical instruments, in particular to a limiting mechanism of an eversion anastomat, a connecting mechanism is mounted on an anastomat body, a nail bin mechanism is mounted on the connecting mechanism in a sliding manner, a cutting blade is mounted on the nail bin mechanism in a sliding manner, the connecting mechanism transmits torque through the anastomat body, and the cutting blade is mounted on the connecting mechanism in a sliding manner. The stapler body is used for driving the cutting blade to rotate to drive the cutting blade to deflect, the cutting blade is driven and pushed through the stapler body to cut redundant tissue, the staple cartridge mechanism is used for limiting the cutting blade and preventing the cutting blade from deflecting in the advancing process, the staple cartridge mechanism comprises a staple cartridge seat, and the staple cartridge seat plays a role in limiting the cutting blade. A limiting groove is formed in the nail bin mechanism, and the limiting groove fixes the nail bin seat by limiting the movement of the nail bin mechanism in the axial direction; according to the invention, the problem of how to keep the cutting blade to stably advance in the anastomosis process is solved.

The present invention relates to the technical field of blood compression cut-off devices, and specifically discloses a blunt compression cut-off device for large medical blood vessels with a detachable inner core, which includes an outer groove, a plurality of hand-held fixing columns fixedly connected to the periphery of the outer groove, a transparent inner core detachably connected to the outer groove, and an inner core fixing device for realizing the disassembly of the inner core. It can timely and effectively complete the blood flow blockage of large blood vessels, and attempts to create a fast, safe and convenient large blood vessel anastomosis environment through the design concept of "pulling out the inner core", reduce the damage to surrounding tissues and organs during compression hemostasis, reduce the bleeding time and the amount of bleeding, and shorten the operation duration.

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.

An apparatus includes an elongate body and an end effector coupled to a distal end the elongate body. The end effector includes a first end effector element configured to hold a first coupler element, a second end effector element configured to hold a second coupler element of the, and first and second end effector elements coupling first and second end effector elements to the elongate body. The end effector is configured to move between a first configuration in which the first and second end effector elements are located in a first position in which axial end of first vessel is coupled to first coupler element, a second position in which axial end of second vessel is coupled to second coupler element, and a third configuration in which first and second end effectors close to coupler the coupler elements and anastomose the first and second vessel.

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.

Described herein are a linear RF closure device configured for even application of compression and uniform thickness of tissue between jaws of the linear RF closure device for forming a seal, a circular RF closure device including a circular embodiment having a collapsible base on a circular sealer configured for a reduced size / cross-section of the circular embodiment of the circular RF closure device after forming a seal, to allow easy removal of the device through an anastomosis with minimal force exerted on newly sealed tissue. Associated RF controls including a system for delivery of RF energy with a handle compatible with the linear and circular / circular embodiment RF closure devices for performing anastomosis in the gut are also described herein.