19 results about "AV Anastomosis" patented technology

Systems and associated methods for minimally invasive creation of anastomoses, in particular the creation of anastomoses to the central vasculature, are disclosed. The systems comprise a delivery catheter configured for percutaneous transluminal insertion through a duct of a patient's body to a target region and a stent graft arranged within the delivery catheter. The stent graft comprises a main tube and at least one branch tube. The branch tube extends from a first end to a second end, wherein the first end is coupled to the main tube.

This application discloses a method and system for microvascular anastomosis modeling and effect prediction in assisted spermatic cord anastomosis, relating to the field of data processing technology. The method includes: extracting the pampiniform plexus topology and varicose vein segments from a three-dimensional vascular tree model of the spermatic veins constructed based on spermatic cord vessel images; determining candidate diversion inlet locations based on the spatial adjacency relationship between the obstructed reflux nodes identified by the varicose vein segments and the pampiniform plexus topology; spatially registering the contour of the inferior epigastric vein segmented from the superficial vein images of the inguinal region with the candidate diversion inlet locations to generate a diversion anastomosis path planning map; constructing the geometric configuration of the end-to-side anastomosis and performing hemodynamic simulation to generate a wall shear stress distribution field, assess the thrombosis tendency of the end-to-side anastomosis, and generate a postoperative patency rate prediction value. This application can predict the risk of thrombosis preoperatively through hemodynamic simulation, providing a reliable basis for surgical planning and effectively improving the success rate of the surgery.

A medical implant device for proximal and distal anastomosis of the aorta is provided. The device is designed to facilitate connection between the aorta and the device, and the size of the two ends of the device is smaller than that of the aorta by one. The device is characterized in that protruding parts are arranged at the positions about 8 mm away from the two ends of the device, and the protruding parts are specially designed to be used for assisting installation of suture rings and used for tightening the aorta and blocking blood flow between the device and the aorta respectively. Once heated or in contact with blood, the constriction sleeve tightly secures the blood vessel and device before and after the protrusions. The design of the device aims to simplify the anastomosis process, reduce the time and skills required by the surgeon to perform the procedure, and improve the overall safety and effectiveness of the anastomosis.

The anastomosis instrument comprises a head part, a waist part and a tail part, the head part, the waist part and the tail part are communicated, and the selected part or all of the side edge of the tail part is bent in the direction away from the inner wall of a second pipeline. According to the anastomosis instrument, the direct and stable instrument is provided, due to the arrangement of the waist part, the first pipeline and the second pipeline can be directly and stably anastomosed, liquid backflow and overflow are avoided, an operation space is provided for suture of a doctor, the doctor can conveniently operate when needing suture, and the difficulty of pipeline anastomosis is greatly reduced. And meanwhile, the side edge of the tail part is partially or completely bent towards the direction far away from the inner wall of the second pipeline, so that long-time hard contact with the inner wall of the second pipeline is avoided, and the second pipeline is well protected.

The invention relates to a chuck assembly of an anastomosis device and a duraspinal membrane anastomosis device thereof. The chuck assembly comprises a first clamping part and a second clamping part rotationally connected with the first clamping part, and the first clamping part is provided with a guide part used for bending and deforming a nail; the second clamping part comprises a nailing device and a nailing piece, the nailing device is rotationally connected with the nailing piece, and the nailing piece is rotationally connected with the first clamping part; the nailing piece can rotate relative to the first clamping part under the driving of external force so that the second clamping part can get close to the first clamping part, and after at least the front end of the second clamping part abuts against the first clamping part, the nailing piece pushes the nail out of the nailing device to the guiding part. The chuck assembly can achieve cooperative work of clamping and anastomosis of soft tissue by driving the nailing piece to move, operation is easy and convenient, the structure is simple, miniaturization is convenient, the chuck assembly can be applied to a duraspinal membrane anastomosis device, minimally invasive surgery type duraspinal membrane closing through a nasal sphenoidal approach, a micro-channel approach and the like is achieved, and the anastomosis effect is good. And the surgical difficulty of clinically closing the dura cerebrospinal membrane is reduced, and the surgical efficiency is improved.

The utility model relates to an anastomosis instrument which comprises a head, a waist and a tail. The head portion is in a hollow pipe shape, one end of the head portion can be connected with a first pipeline, the waist portion is hollow, arranged between the head portion and the tail portion and connected with the other end of the head portion and one end of the tail portion respectively, the waist portion is formed by inwards retracting the other end of the head portion, and the other end of the tail portion is connected with the inner wall of a second pipeline in a matched mode. The inner anti-disengaging piece makes contact with the outer wall of the first pipeline and applies anti-disengaging force to the first pipeline. According to the anastomosis instrument, the direct and stable instrument is provided, due to the arrangement of the waist part, the first pipeline and the second pipeline can be directly and stably anastomosed, liquid backflow and overflow are avoided, suture of a doctor is avoided, the difficulty of pipeline anastomosis is greatly reduced, meanwhile, the inner anti-disengaging piece can effectively prevent the first pipeline from shifting or disengaging, and the anastomosis effect is improved. And the anastomosis stability and safety are greatly improved.

The utility model relates to an anastomosis instrument which comprises a head, a waist and a tail. The head part, the waist part and the tail part are communicated with each other, and the section of the tail part is strip-shaped. The anastomosis instrument is direct and stable, due to the arrangement of the waist part, the first pipeline and the second pipeline can be directly and stably anastomosed, liquid backflow and overflow are avoided, suture of a doctor is avoided, the difficulty of pipeline anastomosis is greatly reduced, and meanwhile the anastomosis effect is improved. The tail with the strip-shaped section is matched with the inner wall of the second pipeline, the clamping face in the radial direction of the second pipeline is larger, displacement or disengagement of the tail can be effectively prevented, and the matching stability and safety are greatly improved.

Robotic systems and methods for assisting in the delivering, navigating, guiding and / or positioning of magnetic implants configured for forming an anastomosis between two adjacent walls of a digestive tract are provided. The robotic system can include at least one a robotic arm engageable with a positioning tool. The positioning tool can include for instance an endoscope, a catheter, or a positioning wand. The positioning tool can contribute to positioning each of the magnetic implants at a corresponding target site of a desired anastomosis, such that the magnetic implants can magnetically couple to each other through the two adjacent walls of the digestive tract to form the anastomosis. Alternatively, the robotic system can include magnetic field generation device and associated external magnetic control assemblies to control a position of the magnetic implants.

The utility model relates to an anastomosis instrument which comprises a head, a waist and a tail. The head part is in a hollow tubular shape, one end of the head part can be connected with a first pipeline, the waist part is hollow, is arranged between the head part and the tail part and is respectively connected with the other end of the head part and one end of the tail part, the waist part is formed by inwards retracting the other end of the head part, the head part, the waist part and the tail part are communicated, at least part of the tail part is tubular, and the side wall of the tail part is communicated with the waist part. According to the anastomosis instrument, the direct and stable instrument is provided, due to the arrangement of the waist part, the first pipeline and the second pipeline can be directly and stably anastomosed, liquid backflow and overflow are avoided, suture of a doctor is avoided, the difficulty of pipeline anastomosis is greatly reduced, meanwhile, the tubular structure of the tail part is matched with the inner cavity of the second pipeline, and the anastomosis effect is good. The tail part can be effectively prevented from shifting or falling off, and the anastomosis stability and safety are greatly improved.

The invention relates to the technical field of medical instruments, in particular to a vascular anastomosis auxiliary instrument with hemostasis and anti-adhesion functions, and aims to solve the problems that an existing instrument is limited in application range, prone to causing postoperative complications, unstable in hemostasis effect and insufficient in integration with an anastomosis instrument. The blood vessel anastomosis auxiliary instrument with the hemostasis and anti-adhesion functions comprises an inner supporting assembly, a force application device and an anastomotic stoma fixing ring, the inner supporting assembly is installed in the broken end of a blood vessel to be anastomosed and used for supporting the broken end of the blood vessel, and the force application device is installed on the outer side of the broken end of the blood vessel and matched with the inner supporting assembly. The anastomotic stoma retention ring is used for adjusting the position and posture of the inner supporting assembly, and assists in fixing anastomotic stomas of the blood vessel broken ends which are matched with each other to promote recovery of the anastomotic stomas; the double effects of immediate hemostasis and physical support in an operation are achieved, and precise anti-inflammation and anti-adhesion of an anastomotic stoma are achieved through the synergistic effect of all the structures.

This application discloses a labial anastomosis device, belonging to the field of medical device technology. Addressing the problems of uneven cut edges, asymmetry, long operation time, and noticeable scarring caused by manual excision and suturing in existing technologies, this invention provides an integrated solution. The labial anastomosis device includes a main frame, a positioning and clamping assembly, a cutting unit, an abutment unit, a suture shaping assembly, and a drive control assembly. The positioning and clamping assembly is used to fix the tissue and form an arc-shaped cutting reference surface; the cutting unit and the abutment unit are arranged opposite each other, moving closer together under drive to cut the tissue; the suture shaping assembly is configured to insert fasteners into the incision simultaneously with or immediately after cutting to achieve immediate closure; the drive control assembly connects the various components to control the execution of actions. This invention achieves integrated operation of positioning, cutting, and anastomosis through a mechanical structure, ensuring smooth and symmetrical excision edges, significantly shortening operation time, reducing the risk of infection, and improving postoperative aesthetics and healing quality.

The utility model discloses a kind of staple cartridge structure and anastomat with staple cartridge structure, the staple cartridge structure includes cartridge body, the cartridge body includes upper surface, two end portions, the outer side wall of connecting two end portions, anastomosis face, slot and multiple nail cavities;Anastomosis face is located upper surface and is divided into left and right two anastomosis areas;Slot is located between two anastomosis areas, and extend longitudinally from upper surface downward and extend horizontally between two end portions;Each nail cavity has opening face, and each staple cartridge is equipped with anastomosis nail;Multiple staple cartridge slots extend downward from any one anastomosis area, and each staple cartridge slot extends horizontally from slot to outer side wall. The anastomat includes the above-mentioned staple cartridge structure and the nail seat, and the staple cartridge structure and the nail seat are connected with each other. The utility model is by being set up staple cartridge slot on the anastomosis face of cartridge body, realizes the liquid inside to be excluded to anastomat outside, improves the reliability of staple cartridge structure anastomosis, and can reduce the risk of tissue being crushed.

Disclosed embodiments include apparatuses, systems, and methods for facilitating anastomosis between bodily passages. In an illustrative embodiment, an eversion mechanism is configured to engage a first external surface of a receiving passage adjacent a first opening in the receiving passage in order to create a receiving flange presenting a first interior face. A donor support mechanism is configured to support a donor passage with an opening in an end in an everted position that forms a donor flange presenting a second interior face. The donor support mechanism is further configured to present the second interior face of the donor flange against the first interior face of the receiving flange to present a passage juncture. A suturing mechanism is configured to motivate a filament through a helical path around the passage juncture to suture the second interior face of the donor passage to the first interior face of the receiving passage.

The utility model relates to an anastomosis instrument which comprises a head, a waist and a tail. The head is in a hollow pipe shape, one end of the head can be connected with the first pipeline, the waist is hollow, arranged between the head and the tail and connected with the other end of the head and one end of the tail respectively, the waist is formed by inwards retracting the other end of the head, the other end of the tail is connected with the inner wall of the second pipeline in a matched mode, and the head, the waist and the tail are communicated. According to the anastomosis instrument, the direct and stable instrument is provided, due to the arrangement of the waist part, the first pipeline and the second pipeline can be directly and stably anastomosed, liquid backflow and overflow are avoided, an operation space is provided for suture of a doctor, the doctor can conveniently operate when needing suture, and the difficulty of pipeline anastomosis is greatly reduced.

A connector (100) for connecting two anastomotic devices, the connector having a generally hollow open structure, the connector (100) comprises a tubular portion (101) centrally located on the axis of the connector (100), a first end (102) extending axially from the tubular portion (101) in a first direction, the first end (102) comprising at least one continuous or discontinuous circumferential flange (106) and / or at least one continuous or discontinuous circumferential groove (106') extending radially outward from the first end (102), and a second end (103) extending axially from the tubular portion (101) in a second direction. The connector (100) is used to connect two devices (200) for placement on the side wall of the intestine (I). The device for anastomosis of tubular structures comprises a connector and a device for placement on the side wall of the intestine (I).

Systems and methods are provided for positioning a magnetic implant for forming an anastomosis at a target location in a patient's digestive tract. The system may include a first magnetic implant and a second magnetic implant configured to be magnetically coupled to each other through two adjacent walls of the digestive tract at a desired site of anastomosis to compress a portion of the two adjacent walls therebetween, and a necrotic region that becomes surrounded by the scar edge after the healing period of time is formed. The system may also include a localization marker positionable at a target location corresponding to a first location on the side of the desired site for the anastomosis of the first magnetic implant, the localization marker configured to intercept the first magnetic implant at the target location once swallowed by a patient.

The utility model relates to the technical field of medical instruments, and provides an anastomat which is degradable and comprises a hollow anastomosis tube, and the anastomosis tube comprises a first anastomosis part and a second anastomosis part which are distributed at the two ends of the anastomosis tube; ports of the first anastomosis part and the second anastomosis part are inclined ports, and the outer diameter of the first anastomosis part is gradually reduced from the port to the middle part. According to the utility model, the first anastomosis part and the second anastomosis part are arranged in an inclined opening and reducing manner, so that the anastomat can conveniently penetrate into blood vessels or lymphatic vessels, and the interiors of the blood vessels or the lymphatic vessels can be shrunk and tightly clamped on the outer walls of the first anastomosis part and the second anastomosis part, and are not easy to fall off; by using the anastomat, pipeline anastomosis can be carried out very conveniently, and the difficulty of pipeline anastomosis is greatly reduced.

This application relates to a clip-type vascular anastomosis device, comprising an inner ring fitted onto one end of a blood vessel and an outer ring fitted around the outer side of the inner ring; the outer ring is provided with a plurality of connectors and connector slots corresponding one-to-one with the connectors for insertion into connectors on another outer ring; a vascular gap exists between the inner ring and the outer ring for insertion after the blood vessel is everted. This application features a semi-automatic docking method using clips during vascular anastomosis, allowing the interiors of two broken blood vessels to abut against each other, thereby completing the anastomosis without the need for additional sutures, reducing the workload of vascular anastomosis personnel, and exhibiting lower damage to the blood vessel compared to existing technologies.

FIELD: medicine.SUBSTANCE: invention relates to operative urology, namely to surgical treatment of recurrent strictures of the pyeloureteral junction (PUJ) affecting the PUJ and ureter, when resection of the narrowed PUJ segment and performing an anastomosis of the renal pelvis with the ureter is impossible. The scarred narrowed segment of the ureterocalycopyeloanastomosis is isolated. Resection of the altered part of the ureter and the kidney parenchyma above the dilated lower calyx is performed. The posterior edges of the ureter and the lower calyx are connected with three interrupted sutures without tension, a stent is placed antegradely. A buccal mucosal graft is placed on the anterior part of the anastomosis.EFFECT: possibility to perform resection of the narrowed part of the ureter and restore patency of the upper urinary tract, form a wide lumen of the anastomosis between the lower calyx and the ureter by augmenting it with a buccal graft, which provides optimal urine outflow from the kidney, minimise the percentage of recurrence.1 cl, 3 dwg, 1 ex