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341results about How to "Reliable anchoring" patented technology

Intravascular folded tubular endoprosthesis

A bifurcated or straight intravascular folded tubular member is deliverable percutaneously or by small cutdown to the site of a vascular lesion. Its inserted state has a smaller nondeployed diameter and a shorter nondeployed length. The intravascular tubular member has a folded tubular section that is unfolded following insertion into the blood vessel. The length of the intravascular folded tubular member is sized in situ to the length of the vessel lesion without error associated with diagnostic estimation of lesion length. The folded tubular member is self-expandable or balloon-expandable to a larger deployed diameter following delivery to the lesion site. An attachment anchor can be positioned at the inlet or outlet ends of the intravascular folded tubular member to prevent leakage between the tubular member and the native vessel lumen and to prevent migration of the tubular member. The attachment anchor has a short axial length to provide a more focal line of attachment to the vessel wall. Such attachment is valuable in attaching to a short aortic neck in the treatment of abdominal aortic aneurysm. The attachment anchor can have barbs which are held in a protected conformation during insertion of the tubular member and are released upon deployment of the attachment anchor. The intravascular tubular member can be formed of woven multifilament polymeric strands with metallic strands interwoven along with them. Double weaving is incorporated to prevent leakage at crossover points.
Owner:DRASLER WILLIAM J +1

Method and apparatus for anchoring cardiovascular implants

Methods, devices and systems facilitate retention of a variety of therapeutic devices. Devices generally include an anchoring element, which has been designed to promote fibrotic ingrowth, and an anchored device, which has been designed to firmly engage the complementary region of the anchoring element. The anchoring element may be placed in a minimally invasive procedure temporally separated from the deployment of the anchored device. Once enough time has passed to ensure appropriate fixation of the anchoring element by tissue and cellular ingrowth at the site of placement, the anchored device may then be deployed during which it firmly engages the complementary region of the anchoring element. In this manner, a firm attachment to the implantation site may be made with a minimum of required hardware. Some embodiments are delivered through a delivery tube or catheter and while some embodiments may require laparoscopy or open surgery for one or more of the placement procedures. Some embodiments anchor devices within the cardiovascular tree while others may anchor devices within the gastrointestinal, peritoneal, pleural, pulmonary, urogynecologic, nasopharyngeal or dermatologic regions of the body. An alternative embodiment provides for the placement of the anchoring element and anchored device simultaneously, but allows for their removal separately. This embodiment allows the device, which may be placed only temporarily and be designed to be removed, to experience significant fibrotic ingrowth, but then to be easily detached from the ingrowth-anchored region to allow for simple and quick device removal.
Owner:THERANOVA LLC

Adjustable sacral mesh fixation device and method

A sacral mesh fixation device and method of use for sacral colpopexy. The sacral mesh fixation device comprises multiple hinged sections pivoted together at opposite ends and adapted to clamp one or more strips of sacral mesh there between. A latching mechanism is provided for releasably latching the opposing sections shut, thereby releasably clamping the sacral mesh to allow verification of tension. A sequential latching mechanism is provided to fixedly lock the fixation device to the sacral mesh by latching the remaining section to the prior sections. At least one of the sections may be sutured to tissue and the sacral mesh inserted between the sections and releasably clamped in place, thereby releasably affixing the mesh to the tissue or fixedly locking the mesh to the device thereby permanently locking the mesh to the tissue. To use the device, a single mesh fixation device or a plurality of mesh fixation devices may be introduced through a trocar into the abdomen, positioned in a single or supporting array, and sutured to surrounding tissue. The sacral mesh is then clamped between opposing sections of the mesh fixation device(s), thereby temporarily suspending the mesh in a sling. However, the fixation devices can be reopened to facilitate easy readjustment and repositioning of the mesh sling to achieve the proper tension and position or fixedly locked for permanent support of the mesh.
Owner:VON PECHMANN WALTER +4

Uniform pressure distribution type anchor cable

The invention relates to a uniform pressure distribution type anchor cable, which comprises an outer anchor head, an anchor cable body and a multilevel cable body bearing structure. The first-level bearing structure of the cable body is a permanent bearing structure consisting of an extruding anchorage device and a bearing plate, the rest bearing structures at all levels are pressure-yielding bearing structures only consisting of pressure-yielding anchorage devices or consisting of pressure-yielding anchorage devices and bearing plates, the lengths of all prestressing tendons for forming the anchor cable body are equal, and the number of the bearing structures on each prestressing tendon is the same. The pressure-yielding anchorage device comprises an extruding sleeve and an anchoring medium, wherein the extruding sleeve and the anchoring medium are extruded and anchored on the prestressing tendons to form a pressure-yielding anchorage device; the anchoring medium is a spring wire witha circular cross section; and the prestressing tendons are non-bonded tendons made of stranded wires or wire cables or stranded wires and wire cables. The anchor cable has the advantages of having even integral stressed state, greatly reducing stress concentration of the anchored section in the anchor cable, and having excellent anchoring performance, simple construction process and safe operation.
Owner:LIUZHOU OVM MASCH CO LTD

Integrated coated branched vascular stent and conveying system thereof

ActiveCN105662650AFit tightlyReduced risk of internal leakageStentsOcculdersInsertion stentIntegrated design
The invention relates to an integrated coated branched vascular stent and a conveying system thereof. A main body and branches of the stent are of an integrated design, and the main body and branches of the stent each is coated with an integrated coating material, so that the incidence rate of internal leakage caused after the stent is implanted can be reduced; the front end of the main body of the stent is a bare stent portion, so that anchoring can be strengthened; the stent edge of the stent main body of the stent and connections between the main body stent and branch stents are provided with platinum-iridium alloy developing points, so that the position of the stent can be dynamically monitored during the release of the stent, and the aim of accurately locating and releasing the stent is achieved. The stent is fixed and released by adopting a binding design, so that the stent can be in a compressive state and firmly fixed to the maximum, the diameter of a conveyor is reduced, and distant-range conveying and operating are facilitated; the conveying system adopts a staged release manner, so that the problem that the existing stents are prone to displacement during release and cannot be readjusted is solved, and the conveying system has a very good market application prospect.
Owner:THE FIRST HOSPITAL OF CHINA MEDICIAL UNIV

Magnesium-based metal-soluble bridge plug

The invention discloses a magnesium-based metal-soluble bridge plug. The magnesium-based metal-soluble bridge plug comprises a central tube, a releasing shear nail, a spacer ring, an upper slip, an upper conical body, a rubber cylinder, a protective ring, a lower conical body, a lower slip, a base and an anti-blocking pattern tube; the spacer ring, the upper slip, the upper conical body, the rubber cylinder, the protective ring, the lower conical body and the lower slip separately sleeve the central tube from top to bottom in sequence, and the base is connected with the central tube through anexternal thread of the lower end of the central tube; the upper end of an outer setting cylinder is connected with an ignition setting tool through a T-shaped thread. Compared with the prior art, themagnesium-based metal-soluble bridge plug has the advantages that a magnesium-based soluble metal material is adopted, and the dissolution performance is reliable; an upper-and-lower bidirectional integral slip structure is adopted, the integral slip junction is broken when the thrust reaches 2-3 t, and the slips are opened; slip teeth adopt combinations of ceramic particles and alloy particles to ensure an anchoring effect and an anchoring force; the base has an anti-rotation structure design, and the plug is drilled conveniently when plug drilling is needed in a short time due to sand blockage or complicated well bottom conditions.
Owner:CNPC BOHAI DRILLING ENG

Assembled prestressed carbon fiber plate tensioned anchorage system, and anchorage method thereof

The invention discloses an assembled prestressed carbon fiber plate tensioned anchorage system, and an anchorage method thereof. The assembled prestressed carbon fiber plate tensioned anchorage system comprises a tensioning assembly, a tensioning end anchorage device, two anchorage plates and a fixing end anchorage device, wherein the two ends of a carbon fiber plate are respectively fixed on a to-be-strengthened steel girder through the tensioning end anchorage device and the fixing end anchorage device, the anchorage plates are coated on the carbon fiber plate and pretensioned together with the steel girder, the tensioning assembly is connected with the tensioning end anchorage device, the carbon fiber plate is pretentioned by applying jacking force to a counter-force frame through the tensioning assembly, and after the tensioning of the carbon fiber plate is completed, the carbon fiber plate is fastened on the steel girder by the anchorage plates through locking pieces. The assembled prestressed carbon fiber plate tensioned anchorage system has the beneficial effects that after strengthening is completed, the anchorage devices and the tensioning assembly can be removed from a steel structure, and only the carbon fiber plate and the anchorage plates on the two ends are left, so that the economy is good. The carbon fiber plate is fit with the surface of the steel structure through a steering block, and adhesion strengthening is formed by utilizing special epoxy glue, thus being beneficial to overall stress of the structure.
Owner:SOUTHEAST UNIV
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