43 results about "Av graft" patented technology

The invention provides an artificial blood vessel with a stent and application of the artificial blood vessel in Stanford A type aortic dissection clinical operations. Treatment can be simplified, andthe operation risk can be reduced. The length of the blood vessel is 15-20 cm, and the blood vessel is made of a dacron artificial blood vessel, wherein the near end is a pure dacron artificial bloodvessel body, the length is 5-10 cm, the length of the far end is 10 cm, and the surface of the far end is a dacron artificial blood vessel body, the interior of the far end is provided with the W-shaped titanium-nickel alloy metal stent with a self-expansion function, and the stent is fixed in a sewn mode; the diameter of the artificial blood vessel with the stent is 24-30 mm. During the operations, artificial blood vessels, with different diameters, provided with stents are selected according to the inner diameters of the aortas of different patients.

The invention provides an artificial blood vessel valved homograft conduit and a production method thereof. The artificial blood vessel valved homograft conduit comprises an artificial blood vessel and a valve arranged in the artificial blood vessel and used for blocking, wherein the valve is in a skirt state extending in the central line direction of the artificial blood vessel; the valve is prepared through sewing of a tubular blood vessel material to the artificial blood vessel, one end of the blood vessel material is connected to the artificial blood vessel in the radial direction of the artificial blood vessel, and the other end is a free end; the whole vessel body part of the blood vessel material is sewn on the artificial blood vessel through multiple sewing threads, and the sewingthreads are parallel to the vessel body of the blood vessel material in the radial direction and arranged at intervals in the peripheral direction of the vessel body of the blood vessel material. Theartificial blood vessel valved homograft conduit is obtained through sewing of a high polymer material and the artificial blood vessel, the valved homograft conduit can be implanted when the artificial blood vessel is implanted into a human body, the process is simple, and the biocompatibility is good.

The present invention discloses an artificial blood vessel stent, which can minimize the diameter of a stent insertion device because the diameter (profile) thereof is uniform and small over the entire length upon being loaded, and accordingly can be easily placed in a branched portion of a blood vessel using a puncture method. The artificial blood vessel stent comprises: (I) an artificial blood vessel body 1 in which the upper end part is formed with a single cylindrical shape or partially cylindrical shape and the lower end part is divided into two small cylindrical shapes or partially cylindrical shapes having different lengths; (II) a cylindrical first stent member 2 connected to the upper end of the artificial blood vessel body and being expandable; (III) a cylindrical second stent member 3 connected to the shorter side of the lower end part of the artificial blood vessel body and being expandable; and (IV) a cylindrical third stent member 4 inserted into the longer side of the lower end part of the artificial blood vessel body, so that the upper end surface coincides with the lower end surface of the second stent member, and being expandable.

The invention relates to an intra-operative rapid blood vessel butt-joint assisting device which comprises a lining ring and long-rod diameter expanding pliers. The lining ring is formed by bending a long-strip-shaped sheet, one end of the long-strip-shaped sheet is provided with a clamp spring, the other end of the long-strip-shaped sheet is provided with multiple clamping holes, and the clamp spring is inserted into the clamping holes to fix the diameter of the lining ring; the outer wall of the lining ring is provided with an upper groove and a lower groove; the head end of the long-rod diameter expanding pliers is provided with two rows of protrusions, and the lining ring is arranged between the two rows of the protrusions to feed the blood vessel and prevent slipping; a plier handle on one side is fixedly provided with a scale metering panel, the corresponding portion of a plier handle on the other side is fixedly provided with diameter reading lines, and the scale metering panel is provided with an anti-slip clamp hoop which can slide along the scale metering panel, so that excessive pressing and holding are prevented. According to the intra-operative rapid blood vessel butt-joint assisting device, butt-joint of the self-blood vessel and the artificial blood vessel can be changed into a binding fixing mode from a suture anastomosing mode, the blood vessel butt-joint operation time and the intra-operative circulatory arrest time can be significantly shortened, the operation difficulty is lowered, anastomotic bleeding and postoperative complications are reduced, and increasing of the survival rate of a patient and improving of the postoperative recovery quality are facilitated.

Disclosed herein is a vascular graft and a method for sealing a vascular graft. The method generally includes applying a hydrogel sealant to the vascular graft thereby sealing the graft, wherein the hydrogel sealant is prepared from material selected from the group consisting of plant sourced material, synthetic material, or a combination thereof. In some embodiments, the hydrogel sealant may be prepared from albumin and a crosslinking agent or from poly(ethylene)oxide and a poly(amine).

A blood vessel puncture plugging sheath with a balloon comprises a sheath tube 1), a transfusion tube (2) and a sheath handle (5) and is further provided with the balloon (3) and a balloon inflating tube (4). The balloon (3) is communicated with the balloon inflating tube (4) and arranged on the periphery of the sheath tube (1), the transfusion tube (2) and the balloon inflating tube (4) are parallelly arranged in the sheath tube (1), the transfusion tube is communicated with the sheath tube, and the transfusion tube and the balloon inflating tube are two independent tubes and are led out from the sheath handle. The blood vessel puncture plugging sheath with the balloon capable of being filled with liquid (gas) is used as a surgical instrument used for surgical operation on artificial blood vessels and the like, and simultaneously has a good visual field and a good hemostasis effect, the sheath tube not only is used as a normal surgical instrument (for transfusion and the like) in the field, but also can be used for hemostasis, the hemostasis effect is good, and blood loss of a patient in surgery can be greatly reduced. The blood vessel puncture plugging sheath is particularly applicable to hemostasis during artificial blood vessel surgery.