811results about "Occulders" patented technology

Pulmonary treatment devices, systems and methods of use are provided which take into account the vast tissue damage of advanced COPD sufferers and provide treatments designed specifically to treat the particularly compromised lung tissues that are present in these patients. These treatments reduce trapped air volume, tension lung tissue and enhance lung elastic recoil. In particular, a variety of embodiments of pulmonary treatment devices are provided. The devices are comprised of a shape memory material wherein the devices are able to be expanded under tension, and then are able to recoil back toward an original relaxed or resting shape as the devices are deployed into the tissue. This action causes the pulmonary treatment devices to corkscrew into damaged tissue, becoming sufficiently entwined to allow pulling of the tissue by retraction of the device. This in turn re-tensions the lung causing lung volume reduction.

This disclosure relates to a catheter system that for precisely positioning fluid flow restrictors within a blood vessel. In particular, this disclosure provides a catheter system that includes a sheath with a first fluid flow restrictor mounted thereto, and a catheter that is slidably disposed within the sheath and has a second fluid flow restrictor mounted thereto. Inside a blood vessel, the sheath and the catheter are separately slidable, thereby allowing the first and second fluid flow restrictors to be positioned at precise locations within the blood vessel.

The present disclosure relates to a catheter, an arrangement and a system and methods of using the same. The catheter comprises an occlusion member configured for occluding a blood vessel to limit blood flow through the blood vessel. The catheter is configured to provide a first passage and / or a second passage , wherein the respective passage is configured to provide a connection between an interior of the catheter and an exterior of the catheter within the blood vessel. The first passage is configured to provide a connection between a first lumen of the catheter and the exterior, and / or the second passage is configured to provide a connection between a second lumen of the catheter and the exterior.

The invention relates to a spring ring releasing structure and a spring ring system. The spring ring releasing structure comprises a pushing rod, a notch elastic piece located in the pushing rod and a traction wire connected with the notch elastic piece. The notch elastic piece is provided with a notch used for clamping a spring ring ball head, and the outer side wall of the notch elastic piece abuts against the inner wall of the pushing rod. A releasing groove is formed in the far end of the pushing rod, when the outer side wall of the notch elastic piece abuts against the groove bottom of the releasing groove, the caliber of the notch is larger than the diameter of the spring ring ball head, and when the outer side wall of the notch elastic piece abuts against the inner wall, outside the releasing groove, of the pushing rod, the caliber of the notch is smaller than the diameter of the spring ring ball head. The defects that an existing spring ring release structure limits the filling effect of a spring ring in hemangioma and the tube kicking phenomenon is likely to be caused are overcome, the embolism precision is improved in a free torsion air-finding connection mode, the fracture risk is reduced through low-pressure filling, meanwhile, the reliability of mechanical release is kept, and the safety of the embolism is improved. The method is a targeted upgrade of an interventional embolism spring ring release technology.

Devices, systems, and methods for treating aneurysms are disclosed herein. According to some embodiments, the present technology includes a treatment system comprising a delivery shaft, a manipulation shaft slidably positioned within the lumen of the delivery shaft, and an occlusive device configured for implantation within the aneurysm. The occlusive device can comprise a plurality of filaments that are secured to one another at a proximal end of the occlusive device by a cured material. The occlusive device can comprise inner and outer layers of braided filaments, wherein the proximal end region of the inner layer has an exposed portion that extends proximally beyond the proximal end region of the outer layer, and wherein the cured material extends into and fills interstices between the braided filaments at the proximal end regions of the inner and outer layers.

A flow restriction system may include an implantable controller system for controlling an implantable flow restrictor. The controller system may include: an implantable housing, an actuator at least partially disposed within the implantable housing, the actuator having a first configuration corresponding to the implantable flow restrictor being in the low profile state and a second configuration corresponding to the implantable flow restrictor being in the high profile pressure restricting state, an internal power source configured to supply current to the actuator, and a processor configured to control operation of the actuator using power from the internal power source.

The invention provides a medical multi-cavity catheter and a medical catheter treatment device, and relates to the technical field of medical instruments.The medical multi-cavity catheter comprises at least two catheter cavities extending in parallel, and the far end of at least one catheter cavity forming the overall dimension of the medical multi-cavity catheter is shorter than the far end of the longest catheter cavity; the medical multi-cavity catheter is provided with a plurality of catheter cavities, so that the overall dimension of the far end of the medical multi-cavity catheter is smaller than that of the near end of the medical multi-cavity catheter, and any one of the catheter cavities is provided with a near-end working opening and a far-end working opening. The diameter of the far-end section of the medical multi-cavity catheter can be reduced, the passing ability and the compliance of the medical multi-cavity catheter can be improved, meanwhile, it can be guaranteed that all the pipe cavities in the medical multi-cavity catheter have large working inner diameters, the operation difficulty of working instruments in the pipe cavities is reduced, and the operation efficiency is improved.

An embodiment includes a system comprising: a backbone; a first polyurethane shape memory polymer (SMP) foam on the backbone; a second polyurethane SMP foam on the backbone; a third polyurethane SMP foam on the backbone and between the first and second SMP foams. Other embodiments are described herein.

The vascular occlusion treatment system includes a delivery assembly and a vaso-occlusive device removably coupled to the delivery assembly by a delivery assembly interface. The vaso-occlusive device includes a braided portion formed from one or more wires, the braided portion including a packed end bundle. The vaso-occlusive device also includes a coil portion coupled to the braided portion. The vaso-occlusive device further includes an intra-device interface coupling the braided portion to the coil portion, the intra-device interface including a stretch-resistant member extending from the packed end bundle to the delivery assembly interface.

In some aspects, the present disclosure provides balloon implantation kits that comprise: (a) a conformable, fillable balloon configured to be implanted in a mammalian body, the conformable, fillable balloon comprising a hydrophilic polymer hydrogel comprising crosslinked hydrophilic polymer chains; and (b) a reservoir containing a filler material that is configured to be introduced into the conformable, fillable balloon.

Systems and methods related to polymer foams are generally described. Some embodiments relate to compositions and methods for the preparation of polymer foams, and methods for using the polymer foams. The polymer foams can be applied to a body cavity and placed in contact with, for example, tissue, injured tissue, internal organs, etc. In some embodiments, the polymer foams can be formed within a body cavity (i.e., in situ foam formation). In addition, the foamed polymers may be capable of exerting a pressure on an internal surface of a body cavity and preventing or limiting movement of a bodily fluid (e.g., blood, etc.).

A left atrial appendage closure (LAAC) device may be adapted for occluding a patient's left atrial appendage (LAA). The LAAC device includes a shape memory polymer foam body that is adapted to expand from a crimped configuration for delivery to an expanded configuration after delivery. The shape memory polymer foam body. An adhesive layer is disposed relative to the shape memory polymer foam body.

A method of providing embolic protection for carotid stent implantation includes advancing an arterial sheath into an arterial system of a patient and advancing a venous sheath into a venous system of the patient. A fluid connection may be established between the venous sheath and the arterial sheath to enable retrograde flow of blood through the arterial sheath. The artery sheath may be advanced through the vasculature into the patient's carotid artery and the inflatable balloon may be inflated within the patient's carotid artery to block smooth blood flow therein. An interventional tool may be advanced through the interior lumen of the arterial sheath, the interventional tool sized such that a portion of the cross-sectional area of the interior lumen of the arterial sheath remains open for retrograde flow of blood.

An occlusion device or plug having a proximal plug section and a distal plug section. The plug sections may each be shifted between an unexpanded configuration and an expanded configuration at the deployment site to occlude the deployment site. A tubular member such as a silicone tube may be used to form an occlusion device or plug shiftable or expandable into a desired configuration. An intermediate section between a proximal plug section and a distal plug section may be configured to be manipulated at least to shift at least one of the plug sections from an expanded configuration to an unexpanded configuration. A pair of stents may be coupled together via an intermediate section in such manner such that manipulation of the intermediate section causes at least one of the stents to shift from an expanded configuration to an unexpanded configuration.

To provide a device and related method for occluding at least a portion of a body lumen during a procedure.SOLUTION: The device includes an inner shaft defining a lumen therethrough and a first aperture, and an outer shaft including a flexible member and defining a lumen therethrough and a second aperture disposed on the outer shaft proximal to the flexible member. The inner shaft extends through the lumen of the outer shaft and at least a portion of the outer shaft is axially translatable toward or away from a distal portion of the inner shaft. The flexible member is transitionable between an unexpanded configuration and an expanded configuration when at least a portion of the outer shaft is axially translated toward or away from the distal portion of the inner shaft.SELECTED DRAWING: Figure 13

An occlusion device includes a woven mesh body and at least one clamping member. The mesh grid body includes a plurality of strands each having a first end and a second end. And the multiple strands are folded, so that the second end parts of the multiple strands are close to the first end parts of the multiple strands, and a double-layer woven mesh main body is formed. In an exemplary occlusion device, at least one strand of the plurality of strands is radiopaque, and the at least one clamping member is non-radiopaque.

The present application relates to an aneurysm treatment device for implanting into an aneurysm, comprising: a balloon including a hollow balloon body, the balloon body being inflatable or contractible, the balloon body having an opening, the balloon body being capable of entering into the aneurysm, the balloon body being capable of allowing filling or discharging of contrast agent; and an inflation assembly arranged in the balloon body, the inflation assembly being used for supporting the balloon body and opening or closing the opening, the inflation assembly being capable of sealing the balloon body when the inflation assembly closes the opening; when the balloon body is filled with the contrast agent, the balloon body is inflated and an outer wall thereof is capable of abutting against at least part of an inner wall of the aneurysm; when the balloon body discharges the contrast agent, the balloon body is contracted and a negative pressure effect is capable of reducing the aneurysm. Thus, the size of the aneurysm can be reduced after the operation, and the aneurysm space occupation can be avoided.

The application discloses a kind of false cavity plugging device, assembly and system, belong to medical instrument technical field, wherein false cavity plugging device includes elastic membrane and elastic support, elastic support includes warp beam and weft beam, warp beam is continuously bent wave shape, warp beam is equipped with weft beam, and weft beam can be bent into annular ring.Assembly includes release device and false cavity plugging device.System includes conveying device and false cavity plugging assembly, and conveying device includes sheath and guide wire, and sheath is equipped with guide wire passage and conveying passage.Weft beam bends into annular ring can make elastic membrane roll up, reduce the size in width direction, to be contained in sheath, after being separated from sheath, weft beam will be re-opened and contacted with the inner wall of artery dissection, and can be implanted, in the whole process of being received and being separated from sheath, elastic membrane does not have length direction change, and preset release position and actual release position can be kept consistent, reduce the operation requirement to operator, and it is beneficial to popularization and use.

This disclosure generally provides improved medical devices, systems, and methods. [Solution] The present invention relates to a device used in transcatheter treatment of mitral valve regurgitation, specifically a system including a connecting auxiliary element implanted throughout the valve, a connecting auxiliary element and anchor for implantation, a system including a connecting auxiliary element and a delivery catheter, and a method for transcatheterally implanting the connecting element throughout the heart valve.

Described herein are devices and related methods for occluding at least a portion of a body lumen during a surgical procedure. In some embodiments, the device includes an inner shaft defining a lumen therethrough and a first aperture, and an outer shaft including a flexible member and defining a lumen therethrough and a second aperture positioned on the outer shaft proximally relative to the flexible member. The inner shaft extends through the lumen of the outer shaft such that at least a portion of the outer shaft is axially translatable toward and away from a distal portion of the inner shaft. The flexible member is movable between an unexpanded configuration and an expanded configuration when at least a portion of the outer shaft is axially translated toward or away from the distal portion of the inner shaft. In some embodiments, the devices and methods are used for endoscopic surgical procedures.

An implant includes a plurality of foam layers attached together, wherein each foam layer includes a plurality of wedges monolithically formed with a base portion. A cap layer of foam may be attached at an axial end of the foam layers attached together. The cap layer of foam is disk-shaped and is devoid of wedges. A method of making an implant includes cutting disk-shaped pieces of foam partially through their thickness to define pluralities of wedges monolithically formed with base portions, securing the base portions in a contracted configuration to flare the pluralities of wedges apart from each other, and attaching the base portions such that adjacent pluralities of wedges are interdigitated.

A vascular occlusion catheter is configured for insertion, and at least partial inflation, into a targel blood vessel. The vascular occlusion catheter includes a proximal catheter shaft, a distal catheter shaft, and a semi-compliant or non-compliant occlusion balloon mounted at a proximal side thereof to the proximal catheter shaft and mounted at a distal side thereof to the distal catheter shaft. A central catheter shaft extends through the proximal catheter shaft, the occlusion balloon and into the distal catheter shaft. The central catheter shaft is constructed as the primary load-bearing chassis of the vascular occlusion catheter. The occlusion balloon defines a blown diameter between approximately twenty-five and approximately thirty-five millimeters and the occlusion balloon defines a double-wall thickness of between approximately 0.0003″ and approximately 0.0020″.

A medical device includes: an elongated tube having a wall defining a lumen for the elongated tube, wherein the wall of the elongated tube comprises a first opening; and a first actuating element coupled directly or indirectly to the wall of the elongated tube; wherein at least a part of the first actuating element and the first opening of the wall are located at a same longitudinal position with respect to a longitudinal axis of the elongated tube; and wherein the first actuating element is configured to change size to induce stress and / or displacement at the wall of the elongated tube to cause the elongated tube to bend.

This disclosure relates to methods and materials for embolization of one or more blood vessels (e.g., one or more arteries). For example, hydrogel compositions for embolization of one or more blood vessels (e.g., one or more arteries) within a mammal (e.g., a human) are provided.

The application provides a balloon detection device, a balloon detection method, a device and medical equipment, and belongs to the field of medical equipment. The balloon detection device comprises a balloon, a first pressure sensor, a balloon control component and a state detection component. The balloon is configured to block a first pipe body in a filling state. The first pressure sensor is arranged inside the balloon. The balloon control component is configured to perform filling or discharge operation on the balloon. The state detection component is used to output whether the balloon is damaged based on the working state of the balloon control component and the detection result of the first pressure sensor. Based on the detection result of the first pressure sensor under different working states, each working state of the balloon control component can be monitored in real time, so as to reduce the risk of accidents caused by leakage or rupture of the balloon during use to a certain extent.

A lumen ablation system provides a method of treating varicose veins with a pair of balloons to isolate a section of lumen. A toroid access balloon is configured proximal to a lumen access aperture. An isolation balloon is configured an offset distance from the access balloon to form an isolated lumen between the two inflated balloons. The isolation balloon may be translated along a guide wire that extends through an access port and also through the toroid access balloon aperture. An ablation treatment apparatus with an ablation implement, such as an ablation brush with tines extending radially outward from the ablation conduit, is translated into the isolated lumen. The ablation treatment apparatus may be configured on a catheter having a conduit for aspirating the lumen with therapeutic agent. The isolated lumen may be ablated by moving the ablation treatment apparatus within the therapeutic agent, such as a sclerosant therein.

A system for insertion into a vasculature of a patient is disclosed. The system utilizes a primary tubular sheath body coupled to a distal portion of an intermediate tubular sheath body, and a hub coupled to a proximal portion of the intermediate tubular sheath. The hub may be couplable to a dilator via an interaction between a dilator cap and the hub, and the hub may contain a hemostatic valve with a foam member having one or more visibly identifiably regions.

An occlusive implant may include a framework configured to shift between collapsed and expanded configurations, and an occlusive fabric secured to the framework. The fabric includes shape memory characteristics such that the fabric is configured to shift from a first to a second configuration when exposed to a stimulus. A method of making the fabric includes intertwining a plurality of filaments into the fabric, defining a permanent shape of the fabric in the second configuration, and heat setting the fabric in the first configuration. A method of making a shape memory yarn includes forming a core filament, and wrapping at least one shape memory filament helically around the core filament. The at least one shape memory filament is formed from a shape memory polymer and is configured to shift from a first to a second configuration when exposed to a stimulus.

A medical implant for closing a vessel. The medical implant comprises a flexible tubular sleeve having a lumen and defining a longitudinal axis, the flexible tubular sleeve having a radially expanded configuration and a radially contracted configuration. The medical implant further comprises a fluid blocking portion for at least partially blocking the flow of fluid through the lumen; and an adhesive layer disposed on a radial outside surface of the flexible tubular sleeve for bonding to a wall of the vessel.