Abstract: A stent is effective for anti-migration after operation of a lumen, and a first outer stent or a second outer stent is used to be integral to a cylindrical stent and an upper end part of each of the first outer stent or the second outer stent is connected to the cylindrical stent by sutures to have a space part between the cylindrical start, the first outer stent, and the second outer stent. The space part is provided such that the first outer stent or the second outer stent is freely moved or transformed by an external force, and a displacement part caused by the movement or a transformation part caused by the transformation further presses or moves into a lesion part or an inner surface of the lumen to be securely held thereon, whereby the stent is effectively prevented from deviating from the lesion part.

Abstract: The present disclosure relates to the field of body lumen drainage. Specifically, the present disclosure relates to implantable medical devices for facilitating the flow of fluids and materials between adjacent body lumens. In particular, the present disclosure relates to a drainage stent which maintains an open flow passage between fused tissue layers.

Abstract: A prosthesis for repairing a hernia defect includes a patch body, a hoisting frame releasably attachable to the patch body, and a tether attached to the hoisting frame and having a free end extendable through the thickness of the patch body and accessible from the side of the patch body opposite to the side where the hoisting frame is releasably attached. The patch body and/or the hoisting frame includes a self-expanding support member. The hoisting frame includes a frame body and a translation component for directing pulling forces on the tether to the frame body.

Abstract: A surgical brace device for use in a surgical procedure including surgical stapling operations on bodily organ to protect the stapled tissue against damaging effects of physiological motion of the organ is disclosed herein. The surgical brace device comprises a pair of splint members of a predetermined rigidity profile, configured to be disposed on either side of the stapled tissue and dimensioned to span at least a portion of the width thereof; a strut member fixedly joined with the pair of splint members at one ends thereof; and a tie member configured to traverse the tissue of the organ disposed at a predetermined distance from the plurality of strut members to interconnect the pair of splint members and anchor the surgical brace device thereto.

Abstract: A clamp particularly designed for use on the end of a solar module mounting rail, includes two hinged parts that can be adjusted by a fastener to clamp a solar module to the rail. A pull-tab with toothed catches helps to position the clamp during installation, and also prevents the clamp from sliding too far into the rail, while a grip body increases friction and electrical contact between the solar module and the clamp.

Abstract: A prosthesis for repairing a hernia defect includes a patch body, a hoisting frame releasably attachable to the patch body, and a tether attached to the hoisting frame with a free end extendable through the thickness of the patch body and accessible from the side of the patch body opposite to where the hoisting frame is releasably attached. The patch body and/or the hoisting frame includes a self-expanding support member. The hoisting frame includes a frame body with an outer frame component and a force translation component for directing pulling forces on the tether across the frame body. The outer frame component has a loop configuration to generally follow the patch periphery with overlapping end portions or a gap between free ends thereof. The force translation component is separable into multiple segments to facilitate withdrawal of the hoisting frame through an opening when released from the patch.

Abstract: A surgical stapling apparatus includes a staple cartridge assembly, an anvil assembly operatively associated with the staple cartridge assembly, and a surgical buttress. The staple cartridge assembly includes a tissue facing surface having staple retaining slots defined therein, each staple retaining slot housing a staple therein, and an annular knife disposed radially inwardly of the tissue facing surface. The anvil assembly includes an anvil member including a tissue facing surface having staple forming recesses defined therein, and an anvil shaft extending from the anvil member. The surgical buttress is releasably disposed on the tissue facing surface of the staple cartridge assembly or the anvil assembly. The surgical buttress has an annular configuration defining a central aperture therethrough, and includes body segments extending radially outwardly about the central aperture in spaced radial relation relative to each other, and a ring segment interconnecting the body segments.

Abstract: Disclosed suture clips include a generally disk-shaped body having an annular outer body, first and second tabs extending radially inwardly from opposing sides of the annular outer body, first and second slots passing through a thickness of the suture clip and separating the annular outer body from lateral sides of the first and second tabs, and the first and second slots include stepped portions configured to align the suture clip on a rail of a clip deployment device. The stepped slots create bracketing surfaces that interface with the rail on which the clips are mounted, such that the bracketing surfaces prevent or limit the freedom of the clips from tilting or shifting relative to the rail. The disclosed clips can also include rounded edges on engagement surfaces of the tabs to minimize particulate formation.

Abstract: An adjustable, knotless button/loop construct for fixation of ankle syndesmosis tibio-fibular diastasis and an associated method of ankle repair using the same. The knotless construct comprises a pair of buttons attached to a flexible, continuous, self-cinching, adjustable loop integrated with two splices that are interconnected. The knotless construct is passed through fibular and tibia tunnels and the buttons are secured on the cortical surfaces of tibia and fibula. One of the buttons (for example, an oblong button) is secured on the medial side of the tibia by passing the button and the flexible, adjustable loop though the fibular and tibia tunnels and then flipping and seating the button outside the tibia. The length of the flexible adjustable loop is adjusted so that the second button (for example, a round button) is appropriately secured on the lateral fibula.

Abstract: An exemplary valve repair device for repairing a native valve of a patient includes: a strip of material; a coaption element formed from the strip of material; a pair of paddles formed from the strip of material and connected to the coaption element; a cap attached to the paddles; and a pair of extension members connected to the cap and movable between an open position and a closed position. The paddles are movable between an open position and a closed position and are configured to attach to the native valve of the patient. Movement of the cap toward the coaption element causes the pair of paddles to move to the closed position, and movement of the cap away from the coaption element causes the pair of paddles to move to the open position. In the closed position the extension members are biased in a closing direction.

Abstract: A surgical port is disclosed. The surgical port has a cannular channel. The surgical port also has one or more suture slots in communication with the cannular channel. The surgical port further has a pair of cam grips for each of the one or more suture slots, each pair of cam grips comprising opposing gripping arms configured to allow suture to be pulled through the opposing gripping arms in a direction away from the cannular channel and to resist suture movement in a direction towards the cannular channel.

Abstract: A tissue gripping device is formed from a shape-memory material, and has a base section, a first arm, and a second arm disposed opposite the first arm, each arm having a first end coupled to the base section and a free end extending from the base section. The arms of the tissue gripping device are configured to resiliently flex toward a relaxed configuration in a distal direction as the tissue gripping device is moved from a pre-deployed configuration toward a deployed configuration. The tissue gripping device is usable in a method for gripping tissue. The method includes positioning the tissue gripping device near target tissue and moving the tissue gripping device from a pre-deployed configuration toward a deployed configuration in order to grip the target tissue.

Abstract: A device for occluding a vasculature of a patient including a micrograft having an absorbent polymeric structure with a lumen of transporting blood. The micrograft has a series of peaks and valleys formed by crimping. The occluding device is sufficiently small and flexible to be tracked on a guidewire and/or pushed through a microcatheter to a site within the vasculature of the patient. Delivery systems for delivering the micrografts are also disclosed.

Abstract: Intestinal devices and methods for facilitating weight loss. In at least one embodiment of a method of patient treatment of the present disclosure, the method comprises the step of positioning a device, that is configured to reduce or limit localized intestinal distension, around a portion of an intestine of a patient.

Abstract: Catheter removal instruments are provided that can include: at least a pair of instrument jaws aligned along the same axis and opposing one another when engaged, each of the jaws defining recesses having openings wherein the openings of each jaw oppose one another; and a plurality of tips and valleys within the recess with the tips extending toward the openings of each of the jaws, and each of the tips of one jaw aligned opposing the tip of another jaw when the jaws are engaged. Catheter removal instruments are also provided that can include: at least a pair of instrument jaws aligned along the same axis and opposing one another when engaged, each of the jaws defining recesses having openings wherein the openings of each jaw oppose one another; and wherein each of the jaws defines a semi-round channel having a smooth outer surface.

Abstract: An embolic device for treating aneurysms or other vascular disorders may be more compliant than conventional devices, while still achieving desired porosity. In particular, the device may achieve the desired porosity only at discrete sections along the length of the device where such a porosity is required (e.g., sections that will block the neck of the aneurysm upon deployment). The remaining sections of the device can be configured to increase the device's compliance. For example, the remaining sections can be formed from less material than the sections with the desired porosity. In some instances, the sections with the desired porosity are formed from mesh-screen segments and the remaining sections are formed from coil segments. In some instances, the mesh-screen segments are configured to further enhance the device's compliance. For example, the mesh-screen segment can be formed from a layered structure that achieves greater compliance than conventional braided structures.

Abstract: A method of generating a computer-based observable model of an implantable repair material secured to a patient is provided. The method includes processing data corresponding to a patient using a computing device including a processor and a memory storing a software application executable by the processor. The method also includes indicating an implantable repair material and a fixation for securing the implantable repair material to the patient and indicating a distribution of the fixation about the implantable repair material. The method also includes generating an observable model of the implantable repair material secured to the patient on a display operably associated with the computing device. The observable model depicts the indicated distribution of the fixation about the implantable repair material.

Abstract: Devices are provided for a suturing device used during laparoscopic surgical procedures. A suturing needle includes a shaft forming a rod axis; a curved body having a piercing tip at a first end and a base at a second end; and an arm extending radially from the shaft to the base of the curved body such that the curved body is positioned in a plane orthogonal to the rod axis of the shaft and rotatable about the shaft in the plane orthogonal to the rod axis. The suturing device includes a housing, a suturing needle, one or more sutures, a suture magazine configured to hold the one or more sutures, and a drive system, whereby the drive system may actuate the suturing needle to rotate in the plane orthogonal to the drive system, allowing the suturing needle to drive in to and out of tissue to apply a suture.

Abstract: An apparatus includes a thread (58) and a tissue anchor (60) coupled to the thread. The anchor includes a proximal portion (60p), shaped to define one or more appendages (82), a distal portion (60d), and a plurality of strips (84) joining the proximal portion to the distal portion. The anchor is configured to anchor the thread at tissue (42) of a subject by virtue of the appendages expanding radially, and the strips expanding radially to form respective loops at a distal side of the tissue, upon removal of a radially-constraining force from the anchor. Other embodiments are also described.

Abstract: Disclosed is a suture delivery device for endoscopically passing a suture into biological tissue. The device can include two hypodermic needles that can be manipulated via controls on a handle of the device in order to pass a suture from one needle to the other. For example, the device can include a first needle coupled to at least one loop member that, when deployed from the first needle, provides a target through which a second needle of the device can deliver the suture. Once the second needle intersects the loop member, the user can advance a length of suture out through a distal end of the second needle. The loop member can then be retracted into the first needle, thereby grabbing and securing the suture in the process.

Abstract: The present disclosure provides devices and methods for treating breasts. The devices can include an acellular tissue matrix having a predefined shape that allows for complete or enhanced coverage of an anterior portion of a breast implant or tissue expander or to support an implant and/or surrounding tissues.

Abstract: A system for treating tissue includes a clip assembly including a pair of clip arms, proximal ends of which are slidably received within a channel of a capsule to be moved between a tissue receiving configuration, in which distal ends of the clip arms are separated from one another, and a tissue clipping configuration, in which the distal ends are moved toward one another. The system also includes an applicator including a catheter and a control member extending therethrough. The control member configured to be connected to the clip arms to move the clip assembly between the tissue receiving and tissue clipping configurations. The system also includes a coupler attached to one of a proximal end of the capsule of the clip assembly and a distal end of the catheter, and configured to releasably couple the capsule and the catheter to one another.

Abstract: Systems and methods for fixating a graft in a bone tunnel are provided. In general, the system includes a tissue fixation device having a delivery configuration and a deployed configuration, at least one graft retention loop coupled to the tissue fixation device, and a drill pin having a sidewall surrounding a cavity at a proximal end of the pin and at least one longitudinally oriented opening in the sidewall in communication with the cavity, the cavity being configured to fully seat the tissue fixation device. The drill pin is configured to substantially contain therein the tissue fixation device when in the delivery configuration and to enable deployment of the tissue fixation device through the opening. Drill pins configured to contain a tissue fixation device are also provided.

Abstract: A medical device including a first layer having an opening formed therein. A second layer is positioned with respect to the first layer to form a pocket therebetween. A support member is at least partially located in the pocket and reconfigurable for removal of the support member from the pocket via the opening. An affixation element located in the pocket between the support member and the second layer, and secured to the second layer. A method of implanting a medical device is also included.

Abstract: A surgical ligation clip includes a first jaw and a second jaw pivotably coupled to the first jaw. The first and second jaws define first and second clamping surfaces, respectively, and have longitudinal ribs and transverse ribs that define first and second recesses on the first and second clamping surfaces. The second jaw is pivotable in relation to the first jaw from an open position to a clamped position to clamp tissue between the first and second clamping surfaces. In the clamped position, each of the longitudinal ribs on the first jaw is axially aligned with one of the longitudinal ribs on the second jaw and each of the transverse ribs on the first jaw is axially offset from each of the transverse ribs on the second jaw.

Abstract: A gastric restriction device for treating excessive weight or obesity in mammals. The gastric restriction devices includes a skirt having a left portion, a right portion, a top edge with a first indentation located at a center of the top edge, and a bottom edge with a second indentation located at a center of the bottom edge. The skirt has a narrow surface located between the first indentation and the second indentation and a broad surface formed from the left portion connecting to the right portion. The skirt is configured to envelop and fit a stomach of a mammal. The gastric restriction devices includes a first attachment device and a second attachment device. The second attachment device is adapted to engage the first attachment device so that the skirt envelops and fits the stomach of the mammal.

Abstract: Prosthesis (1a) for repair of an inguinal hernia, intended to be implanted laparoscopically, comprising openwork fabric of biocompatible material, comprising a first surface, called parietal surface, intended to be placed facing biological tissues of the inguinal region, and a second surface, opposite the first surface, called peritoneal surface, intended to be placed facing the peritoneum, the peritoneal surface comprising, on a portion of the surface thereof, a first zone (6), provided with a non-stick coating, the parietal surface comprising, on a portion of the surface thereof, a second zone (7) provided with a non-stick coating.

Abstract: The invention relates to a method for forming a prosthetic base knit (1) made of two parallel sheets of porous knits, namely a first sheet (2) of porous knit and a second sheet of porous knit, said two parallel sheets being joined together in a discrete manner by a plurality of connecting porous knits (4) spaced apart from each other. The invention further relates to a method for manufacturing H-shaped prostheses for hernia repair from said base knit thus obtained and to the prostheses obtained therefrom.

Abstract: A tissue anchor includes a driver head associated with a proximal portion of the tissue anchor, a pointed tip portion associated with a distal portion of the tissue anchor, a tissue-engagement portion disposed between the driver head and the pointed tip portion, and a cover configured to cover at least a portion of the tissue-engagement portion.

Abstract: A method for syndesmotic repair includes forming a bone tunnel through a first bone and a second bone. A partial anchoring construct is inserted through the bone tunnel. The partial anchoring construct includes a first flexible strand defining a first adjustable loop and a first anchor coupled to a first end of the first adjustable loop. A second end of the first adjustable loop is coupled to a first pull-through strand. A second anchor is coupled to the second end of the first adjustable loop after the first adjustable loop is inserted through the bone tunnel by the first pull-through strand. The length of the first adjustable loop is adjusted to position the first bone and the second bone in a predetermined spacing.

Abstract: The invention provides improved devices, systems, and methods for tissue approximation and repair at treatment sites. The invention provides devices, systems, and methods that may more successfully approximate and repair tissue by improving the capture of tissue into the devices. The invention may be a one-way mechanism that allows tissue to enter the mechanism but not easily exit, such as a leaf-spring, a protrusion, a pivoting arm and one or more frictional elements.

Abstract: A device for occluding a vasculature of a patient including a micrograft having an absorbent polymeric structure with a lumen of transporting blood. The micrograft has a series of peaks and valleys formed by crimping. The occluding device is sufficiently small and flexible to be tracked on a guidewire and/or pushed through a microcatheter to a site within the vasculature of the patient. Delivery systems for delivering the micrografts are also disclosed.

Abstract: Devices and methods can be used to treat long gap esophageal atresia, while obviating much of the delay and complexities associated with current procedures. The devices and methods involve actively stretching the esophagus portions with traction to promote growth of the esophagus portions. Moreover, the devices and methods provided allow for a compression anastomosis to occur between the esophageal ends. This eliminates the need for a second operation to suture the esophageal ends together.

Abstract: The present invention is an implantable adhesive mesh prosthesis for reinforcing and/or repairing a defect in tissue that is easy to roll into a small diameter cylinder or other low-profile shape for passing through a trocar, incision, or other surgical instrument. More specifically, the adhesive may be applied to the mesh material in a pattern that leaves a significant portion of the surface area of the mesh material free of adhesive. In one embodiment, the adhesive is applied only near the outer perimeter of the mesh product. In another embodiment, the adhesive is applied in spots over all or a portion the surface of the mesh product. In yet another embodiment, the adhesive is applied in parallel lines on the surface of the mesh product and the mesh may be rolled up around an axis parallel to the lines of adhesive.

Abstract: A structure of aligned (e.g., radially and/or polygonally aligned) fibers, and systems and methods for producing and using the same. One or more structures provided may be created using an apparatus that includes one or more first electrodes that define an area and/or partially circumscribe an area. For example, a single first electrode may enclose the area, or a plurality of first electrode(s) may be positioned on at least a portion of the perimeter of the area. A second electrode is positioned within the area. Electrodes with rounded (e.g., convex) surfaces may be arranged in an array, and a fibrous structure created using such electrodes may include an array of wells at positions corresponding to the positions of the electrodes.

Abstract: A device for treating a tissue includes a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough, clip arms, proximal ends of which are slidably received within the channel of the capsule so that the clip arms are movable between an open configuration, in which distal ends of the clip arms extend distally past the distal end of the capsule to be separated from one another, and a closed configuration, in which the clip arms are restrained via an interior surface of the capsule so that distal ends of the clips arms are drawn toward one another, and a reinforcement element coupled to the clip arms, the reinforcement element preventing deflection of the clip arms when engaging a target tissue.

Abstract: A device and method for fixating soft tissue to hard tissue with the aid of a suture anchor and a suture or with the aid of a headed anchor, wherein the anchor is forced into the hard tissue and then anchored therein by in situ liquefaction of a material having thermoplastic properties. The device includes a vibration tool and the anchor and possibly a support element, wherein the anchor includes an anchor foot and a thermoplastic sleeve. The thermoplastic sleeve includes the material having thermoplastic properties. The anchor foot has a distal end suitable for being forced into hard tissue and it is connected to the distal end of the vibration tool and the thermoplastic sleeve sits on a proximal face of the anchor foot, the vibration tool and/or a proximal portion of the anchor foot extending into or through the thermoplastic sleeve.

Abstract: An example implant delivery system is disclosed. The example implant delivery system includes a delivery shaft including a proximal portion, a distal portion and a lumen extending therebetween. The delivery system also includes a frame detachably coupled to the distal portion of the delivery shaft and a tack member coupled to the frame.

Abstract: Staple cartridge assemblies for use with surgical stapling instruments and methods for manufacturing the same are provided. Scaffolds for use with a surgical staple cartridge and methods for manufacturing the same are also provided.

Abstract: An implantable bone conduction transducer arrangement includes a transducer housing having an outer surface with a side wall and opposing ends. A pair of fixation projections are connected to the transducer housing at one end. Each fixation projection includes a bone screw opening configured for insertion of a bone fixation screw to engage underlying skull bone. At least one fixation projection is configured to be independently moveable relative to the transducer housing to form an adjustable relative position between the fixation projections.

Abstract: A method for guiding resection of local tissue from a patient includes generating at least one image of the patient, automatically determining a plurality of surgical guidance cues indicating three-dimensional spatial properties associated with the local tissue, and generating a visualization of the surgical guidance cues relative to the surface. A system for generating surgical guidance cues for resection of a local tissue from a patient includes a location module for processing at least one image of the patient to determine three-dimensional spatial properties of the local tissue, and a surgical cue generator for generating the surgical guidance cues based upon the three-dimensional spatial properties. A patient-specific locator form for guiding resection of local tissue from a patient includes a locator form surface matching surface of the patient, and a plurality of features indicating a plurality of surgical guidance cues, respectively.

Abstract: Described here are devices, systems and methods for closing the left atrial appendage. Some of the methods described here utilize one or more guide members having alignment members to aid in positioning of a closure device. In general, these methods include advancing a first guide having a first alignment member into the left atrial appendage, advancing a second guide, having a second alignment member, into the pericardial space, aligning the first and second alignment members, advancing a left atrial appendage closure device into the pericardial space and adjacent to the left atrial appendage, and closing the left atrial appendage with the closure device. In these variations, the closure device typically has an elongate body having a proximal end and a distal end, and a closure element at least partially housed within the elongate body. The closure element comprises a loop defining a continuous aperture therethrough.

Abstract: Embodiments herein relate to cell encapsulation membranes, devices including the same, and related methods. In an embodiment, a cell encapsulation membrane is included. The cell encapsulation membrane can include a mesh substrate. The mesh substrate can include a first series of fibers extending in a first direction and a second series of fibers extending in a second direction, the first series of fibers intersecting with the second series of fibers, the mesh substrate defining a plurality of apertures disposed between adjacent fibers of the first series and the second series. The cell encapsulation membrane can further include a coating disposed on the mesh substrate, the coating partially occluding the plurality of apertures defined by the mesh substrate and forming pores. Other embodiments are also included herein.

Abstract: Polymer devices are disclosed with microstructured surfaces that modify their absorption pathway. Polymers which generally degrade in water by fracturing into high surface energy fragments, are modified to degrade in vivo without the formation of sharp fragments. Devices are disclosed that possess improved handling characteristics and degrade in an aqueous environment in a uniform and continuous way that favors the formation of soluble monomers rather than solid particulate. Absorbable medical implants with the disclosed surface modifications are more biocompatible, with reduced foreign body response, and dissolution into metabolizable molecular species.

Abstract: This invention relates to the design and function of a single-tether compressible valve replacement prosthesis which can be deployed into a beating heart without extracorporeal circulation using a transcatheter delivery system. The design as discussed combats the process of wear on anchoring tethers over time by using a plurality of stent-attached, centering tethers, which are themselves attached to a single anchoring tether, which extends through the ventricle and is anchored to a securing device located on the epicardium.

Abstract: An exemplary implantable prosthetic device has a paddle frame, an inner paddle, and an outer paddle. The outer paddle is connected to the inner paddle. The inner and outer paddles are connected to the paddle frame at a connection between the inner paddle and the outer paddle. The paddle frame can be positioned inside the inner paddle, outside the outer paddle, or between the inner and outer paddles.

Abstract: A catheter device for repair of the heart by implanting an artificial chord is disclosed. The device comprises a leaflet anchor 10 for placement in a leaflet 12 of a heart valve, wherein the leaflet anchor 10 is arranged to be coupled to the artificial chord 14; and a mechanical gripper device 6 for grasping the leaflet 12 of the heart valve, wherein the gripper device 6 comprises a leaflet anchor channel for housing the leaflet anchor 10 in a folded configuration; the gripper device 6 and leaflet anchor 10 being arranged such that when, in use, the gripper device 6 grasps the leaflet 12, the leaflet anchor 10 can be pushed out of the leaflet anchor channel to pierce the leaflet 12 and form the leaflet anchor 10 into an unfolded configuration so that hooked formations of the leaflet anchor 10 can, in use, secure the leaflet anchor 10 in the leaflet 12.

Abstract: The invention relates to a device (1) and method for selecting the size and shape of a prosthesis and/or for determining the location of marks to be made on the external face of the skin of a patient intended to receive such a prosthesis, for example for repairing a hernia, comprising a sheet (2) of transparent material, the said sheet comprising: —a plurality of graphical representations (3a, 3b, 4a, 4b, 5a, 5b, 5c, 5d) concentrically embodying the respective outlines of various shapes and sizes of prosthesis, —a plurality of first holes (6a, 6b, 6c, 6d, 6e, 7a, 7b, 7c, 7d, 7e) arranged along the transverse line passing through the centre of the said sheet, and —a plurality of second holes (8a, 8b, 8c, 8d, 8e, 8f, 8g, 9a, 9b, 9c, 9d, 9e, 9f, 9g) arranged along the longitudinal line passing through the centre (C) of the said sheet.

Abstract: Described embodiments include apparatus (28) that includes a shunt (26). The shunt includes a flared distal portion (40), a flared proximal portion (44), and an intermediate portion (42), disposed between the distal portion and the proximal portion. The apparatus further includes a constricting flexible longitudinal element (38) passing circumferentially along the intermediate portion of the shunt, configured to constrict the intermediate portion of the shunt, and one or more proximal-portion-collapsing flexible longitudinal elements (36) configured to collapse the proximal portion of the shunt. Other embodiments are also described.

Abstract: Systems, devices and methods are presented for embolic protection. In some embodiments, a device for implantation in a patient's vessel containing a fluid flow is provided which comprises proximal and distal ends, an undeployed, substantially linear state, and a deployed, spring-like (helical) state comprising windings. When the device is deployed, the line segment connecting the proximal and distal ends is approximately perpendicular to the majority of the windings and to the fluid flow. In some embodiments, a delivery device for the monofilament device is provided. The delivery device comprises a needle having a lumen, a sharp distal end, and a pusher slidable within the needle. A method for deploying the monofilament device using the delivery device is provided.