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98 results about "Pericardium tissue" patented technology

Fibrous pericardium. The fibrous pericardium is the most superficial layer of the pericardium. It is made up of dense and loose connective tissue, which acts to protect the heart, anchoring it to the surrounding walls, and preventing it from overfilling with blood.

Prosthetic Cardiac Valve from Pericardium Material and Methods of Making Same

A prosthetic stented heart valve which includes a compressible and expandable stent structure having first and second opposite ends, an expanded outer periphery, and a compressed outer periphery that is at least slightly smaller than the expanded outer periphery when subjected to an external radial force. The valve further includes a valve segment comprising a dual-layer sheet formed into a generally tubular shape having at least one longitudinally extending seam, and a plurality of leaflets formed by attachment of an outer layer of the dual-layer sheet to an inner layer of the dual-layer sheet in a leaflet defining pattern. The valve segment is at least partially positioned within the stent structure. The valve may further include at least one opening in the outer layer of the dual-layer sheet that is spaced from both the first and second ends of the stent structure.
Owner:MEDTRONIC INC

Stents modified with material comprising amnion tissue and corresponding processes

A stent scaffold combined with amniotic tissue provides for a biocompatible stent that has improved biocompatibility and hemocompatibility. The amnion tissue can be variously modified or unmodified form of amnion tissue such as non-cryo amnion tissue, solubilized amnion tissue, amnion tissue fabric, chemically modified amnion tissue, amnion tissue treated with radiation, amnion tissue treated with heat, or a combination thereof. Materials such as polymer, placental tissue, pericardium tissue, small intestine submucosa can be used in combination with the amnion tissue. The amnion tissue can be attached to the inside, the outside, both inside and outside, or complete encapsulation of the stent scaffold. In some embodiments, at least part of the covering or lining comprises a plurality of layers of amnion tissue. The method of making the biocompatible stent and its delivery and deployment are also discussed.
Owner:PEYTANT SOLUTIONS INC

Protecting biological structures, including the great vessels, particularly during spinal surgery

Natural and / or synthetic materials to form a strong barrier between the skeletal system and the great vessels. In the preferred embodiments, a natural or synthetic material is used to prevent scar tissue from forming around the vessels and / or to act as barrier placed between the vessels and the skeletal system, including the spine. Devices according to the invention may also be used over the dura and nerves following laminectomy procedures, between the sternum and the pericardium or heart following cardiac procedures, in intra-abdominal procedures such as intestinal or vascular surgery, over the brain in intra-cranial surgery, over the ovaries or other organs or tissues in the female genitourinary system, over the prostate or other organ or tissues in the male genitourinary system, or in other surgeries on humans or animals.
Owner:FERREE BRET A

Recyclable and adjustable interventional stent for intravascular constriction

InactiveUS20140303710A1Easy to achieve satisfactoryEasy to stable parameterStentsBlood vesselsCalcificationBlood vessel
A recyclable and adjustable interventional stent for intravascular constriction. The stent main body is divided into three parts and shaped like a waist drum with expansion parts (1, 4) being arranged on the upper and lower parts of the stent main body respectively for supporting and positioning. A variable aperture part (2) is arranged in the middle of the stent main body. The upper expansion part (1) is or is not provided with a coating; the middle variable aperture part (2) and the upper half part of the lower expansion part (4) are covered with a pericardium (3) subjected to anti-calcification treatment; and a metal wire ring (5) is passed through the lowermost edge of the stent. A compound conveying guide pipe is composed of an outer sheath (6) and a core (7). The core (7) is a hollow pipe and a wire hanging groove is arranged on the outer side wall of the tip of the pipe to hang the metal wire ring (5) of the lowermost edge of the stent. A fixing bolt (8) on the outer sheath (6) is used for fixing the relative position between the outer sheath (6) and the core (7). The stent is used to replace conventional pulmonary artery banding as, adhesion not being formed around the heart and major vessels and pulmonary stenosis not being formed, difficulties during radical surgery are not increased.
Owner:JIANGSU PROVINCE HOSPITAL

Valve replacement devices, delivery device for a valve replacement device and method of production of a valve replacement device

InactiveCN103108611ADoes not prevent compressionSmall sizeStentsHeart valvesPericardium tissueHeart valve replacement
A device for heart valve replacement comprises a valve component having at least two valve leaflets preferably made of pericardium tissue. Each valve leaflet includes at least two tabs. The device further includes a stent component configured to be radially compressible into a compressed state and expandable into a functional state. The stent component comprises a first end, a second end and at least one intermediate section arranged between said first and said second end. The intermediate section has at least two commissural posts generally aligned parallel to an axis spanning from the first end to the second end. The commissural posts are formed in the shape of a wishbone.
Owner:SYMETIS

Minimally-Invasive Method and Device for Permanently Compressing Tissues within the Body

The present invention is method for permanently compressing tissues in the body. The method employs a compression device made of a spring and a flexible sheet that cooperate to form a compressive envelope around the desired tissue. The spring is preferably Z-shaped or a coil. The sheet is made of a flexible material and the material is preferably elastic. The sheet is preferably a biocompatible elastic material, such as a mesh made of stainless steel or a woven or non-woven elastomer. The method is minimally invasive because it deploys the compression device through the patient's skin directly to the tissue, as opposed to through catheterization or open invasive surgery, such as open-heart surgery. The preferred use is for compressing the left atrial appendage to prevent clots from forming and circulating, thereby preventing strokes. The device is deployed by making an incision in a patient's chest, inserting the compression device through the incision into the pericardium without piercing the heart, and deploying it around the entire appendage. The device remains in place by its own compressive nature: either the spring, the sheet, or both components compress the appendage and cause the device to stay in place due to friction. Preferably the entire compression device is left in place, but the spring or the sheet may be removed, leaving the remaining component to compress the appendage.
Owner:SHUKLA HIMANSHU
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