11 results about "Valved conduit" patented technology

A pediatric valved conduit, comprising: a biologically-engineered tubular conduit comprising a conduit inlet end, a conduit outlet end, and a conduit lumen therebetween; a biologically-engineered valve comprising a valve inlet end and a valve outlet end, wherein the biologically-engineered valve is positioned in the conduit lumen, wherein the valve inlet end of the biologically-engineered valve is fixedly attached in the lumen of the tubular conduit near the conduit inlet end and wherein the valve outlet end of the biologically-engineered valve is fixedly attached in the lumen of the tubular conduit near the conduit outlet end.

The invention discloses an integrated valvular catheter and a preparation method thereof, relates to the technical field of medical instruments, and aims to solve the problems that in a traditional valvular catheter operation, suturing is tedious, tearing and thrombus risks exist, and adaptability is insufficient. The integrated valve-containing pipeline is composed of a valve leaflet and a pipeline body which are integrated through the sintering effect, sewing is not needed, and the reflux and thrombus risks caused by sewing gaps are effectively avoided; a metal memory alloy support is embedded in the wall of the pipeline, so that support can be provided for the valved pipeline to stabilize haemodynamics and prevent the pipeline from collapsing, endovascular intervention delivery can be achieved, and the device is adaptive to a surgical opening mode or an endovascular implantation mode and is used for replacing the valved pipeline at parts such as pulmonary artery and lower limb deep vein of a human body and recovering the function of the damaged valve.

Valves constructed from low porosity leaflets are disclosed. The valves disclosed herein may be integrated into a variety of structures, such as valved conduits and transcatheter stents, and may be constructed of one or more layers. Embodiments herein are also directed to methods of using the same and methods of making the same.

In accordance with the purposes of the disclosed materials and methods, as embodied and broadly described herein, the disclosed subject matter, in one aspect, relates to a thermoformed polymeric valved conduits for heart valve and methods of using and making thereof. The thermoformed polymeric valved conduits is formed via a thermoforming process that conforms the conduit to a mold; the process forms a conduit that is flexible, resizable, and / or deformable after being formed.

This invention discloses a pulmonary artery valved conduit, comprising a conduit body and a valve. The valve is disposed on the inner wall of the conduit body and includes at least one leaflet. Each leaflet has a suture portion, which is fixed to the inner wall of the conduit body by a suture. In at least a portion of the suture, some sutures run in the opposite direction to the suturing direction of the suture portion, while others run in the same direction. Sutures running in the same direction as the suture portion alternate with sutures running in the opposite direction. Furthermore, the stitch span of the sutures running in the same direction as the suture portion is greater than that of the sutures running in the opposite direction. This invention also discloses a method for suturing the above-described pulmonary artery valved conduit. The pulmonary artery valved conduit provided by this invention exhibits excellent hemodynamics and durability.

The application discloses a kind of valve conduit and forming method, including artificial blood vessel formed by using biological material, the artificial blood vessel has sewing part for being sutured with artificial valve at one end;Artificial valve has sewing edge for being sutured with artificial blood vessel;Sewing part is covered and arranged on the upper surface of sewing edge from the outer edge of sewing edge to the root of sewing edge, and is sutured with sewing edge between sewing edge outer edge and root position respectively.Sewing part is conveniently realized conformal fit and covered arrangement on the surface of sewing edge by using the elasticity and flexibility of artificial blood vessel of biological material, and by being sutured with sewing edge and sewing part at the root of sewing edge and the outer edge of sewing edge respectively, not only solve the connection problem between artificial blood vessel of biological material and artificial valve, and the problem of leakage easily occurring at connection position is well solved.

This invention discloses an integrated valved conduit and its preparation method, relating to the field of medical device technology. It aims to solve the problems of traditional valved conduits, such as cumbersome suturing during surgery, risks of tearing and thrombosis, and insufficient adaptability. The integrated valved conduit consists of a leaflet and a conduit, which are sintered together, eliminating the need for sutures and effectively avoiding the risks of reflux and thrombosis caused by suture gaps. A metal shape memory alloy stent is embedded within the conduit wall, providing support to stabilize hemodynamics and prevent conduit collapse, while also enabling endovascular delivery. It is suitable for both open surgical and endovascular implantation methods, and can be used for valved conduit replacement in areas such as the pulmonary artery and deep veins of the lower extremities, restoring damaged valve function.

To provide an external ear canal pressure adjustment device.SOLUTION: An external ear canal pressure adjustment device includes a fluid flow generator, an earphone having an axial direction earphone bore, and a conduit with a valve which is fluid connected to the fluid flow generator and to the axial direction earphone bore, and thereby the earphone is configured to be sealably engaged with the external ear canal as a barrier between the external ear canal pressure and ambient pressure. In one embodiment, the fluid flow generator has a configuration which causes fluid flow having fluid volume within a range 0 milliliter to approximately 20 milliliters. In another embodiment, the fluid volume has fluid volume selected in advance.SELECTED DRAWING: Figure 1B

The application discloses a blood vessel prosthesis, a valved conduit and a forming method, which comprises a tube body formed by biological material; a plurality of constraint rings are arranged on the tube body in a longitudinal direction of the tube body at intervals; the constraint rings are arranged in a ring shape outside the tube body in a circumferential direction of the tube body, so that when the tube body is subjected to pressure from inside to outside in a radial direction of the tube body, the tube body can form a bellows structure with wave troughs at positions of the constraint rings and wave crests between the constraint rings. The corresponding positions of the tube body are bound by the constraint rings, so that when the tube body is expanded outwardly under the action of internal pressure, wave troughs can be formed at the positions of the constraint rings on the tube body, and wave crests can be formed between the constraint rings, so that the blood vessel prosthesis in a bellows structure can be obtained.

Various aspects of the present disclosure are directed toward apparatuses, systems, and methods that include a valved conduit. The valved conduit may include a frame element arranged within the conduit and one or more expansion elements configured to spread apart to radially expand the frame.

An external ear canal pressure regulation device including a fluid flow generator, an earpiece having an axial earpiece bore, and a valved conduit fluidicly coupled to the fluid flow generator and the axial earpiece bore, whereby the earpiece has a compliant earpiece external surface configured to sealably engage an external ear canal as a barrier between an external ear canal pressure and an ambient pressure.