819results about "Haemostasis valves" patented technology

A surgical sealing device (405), suitable for use during a surgical procedure such as a laparoscopic procedure or a hand-assisted laparoscopic procedure, comprises a first sealing member (5) and a second sealing member (6). A thin slit is defined between the sealing members (5, 6). In a closed configuration, the first sealing member (5) overlaps the distal end opening of a passageway (2) through the second sealing member (6) to prevent leakage of insufflation gases out of an abdomen (4). In an open configuration, the first sealing member (5) is retracted to reveal the distal end opening of the passageway (2) and thus facilitate passage of an object, such as a surgeon's hand or forearm (3), into the abdomen (4). The device (405) comprises a planar support element (406) fixedly attached to the proximal exterior surface (408) of the first sealing member (5). The first sealing member (5) is fixedly attached to the second sealing member (6) at an attached region (409), with a detached region (407) remaining detached from the second sealing member (6). The support element (406) acts as a stiffening element to increase the stiffness of the detached region (407) of the first sealing member (5) to minimise the deformation of the detached region (407) of the first sealing member (5) when the surgeon's hand/forearm (3) is pushed through the passageway (2). It is thus easier for the surgeon to retract the first sealing member (5) laterally to reveal the distal end opening of the passageway (2) by pushing the hand/forearm (3) through the passageway (2) and easier for the surgeon to pass the hand/forearm (3) through the device (405) and gain access to the abdomen (4).

Devices, systems, and methods for implanting prostheses in the body lumens rely on tacking or anchoring the prostheses with separately introduced fasteners. After initial placement, a fastener applier system is introduced within the expanded prostheses to deploy a plurality of fasteners to at least one prosthesis end. The fasteners are usually helical fasteners which are releasably restrained on the fastener driver, and are delivered by rotation of the fastener driver. The fasteners may be applied singly, typically in circumferentially spaced-apart patterns about the interior of at least one end of the prosthesis. A lumen extension or lumens may be coupled to the prosthesis to extend the reach of the prosthesis within the implantation site. Fasteners may also be applied to the lumen extensions.

An apparatus for providing hemostasis within a puncture through tissue includes an elongate member having a lumen extending between proximal and distal ends thereof, an expandable member carried on the distal end and a housing on the proximal end, the housing including an interior communicating with the lumen, and further including a valve assembly with a one-way valve allowing access into the housing interior upon application of a pressure differential across the valve, and a movable plunger for overriding and opening the valve.

Catheter valve assemblies and methods for connecting catheters and/or providing fluid access to catheters. In one variation, a device comprises a catheter valve assembly and an extension leg unit. The extension leg unit includes lumen inserts for engaging valves positioned within the catheter valve assembly. In another variation, the valve assembly comprises a depressable plunger which may be engaged by an access cannula. Various connectors with integrated valve assemblies are also disclosed.

Two renal delivery members have two distal ports that are adapted to be positioned within two renal arteries via their corresponding renal ostia at unique locations along an abdominal aortic wall. A proximal coupler assembly is outside the body and is coupled to deliver material to the two distal ports for bi-lateral renal therapy. One or both of the delivery members may be self-cannulating into the corresponding renal ostium, or may be controllably steered into the respective ostium. Non-occlusive anchors may be coupled with one or both of the delivery members at anchoring positions in the renal artery or abdominal aorta to secure the renal delivery member within the renal artery. Renal-active fluid agents are coupled to the bi-lateral delivery system. Another renal therapy system cannulates a renal vein from the vena cava and controls a retrograde delivery of agents to the respective kidney.

A hemostatic valve couples to a sheath proximal hub having an inside and an outside surface. The hemostatic valve has a valve body having a proximal porting and end, and a distal portion and end. A passageway extends longitudinally through the valve body between the proximal and distal ends. A sealing element is positioned within the passageway. The distal portion of the valve body includes a pair of contact surfaces forming an annular gap receiving the sheath proximal hub of the sheath so that the contact surfaces sandwich the sheath proximal hub forming a seal on both the inside and outside surfaces of the hub. The valve body and the sheath proximal hub includes two oppositely placed longitudinal lines of fissure that allow the hub to be separated into two halves with the valve body.

A local renal delivery system includes a flow isolation assembly and a local injection assembly. The flow isolation assembly in one mode is adapted to isolate only a partial flow region along the outer circumference along the aorta wall such that fluids inject there are maintained to flow substantially into the renal arteries. Various types of flow isolation assemblies and local injection assemblies are described.

A flushable catheter assembly having features to enable selective activation of fluid flow through the catheter assembly is disclosed herein. A septum is placed within the catheter adapter of the catheter assembly and includes a pathway that is closed prior to being biased open via a septum activator also positioned within the catheter adapter. A plurality of air vent channels is interposed between the septum and the inner surface of the catheter adapter to permit “flashback” of blood during insertion of the catheter into a patient. The septum activator is advanced through the pathway of the septum as a coupler is attached to a proximal opening of the catheter adapter.

A seal assembly is provided which includes a gimbal-like structure permitting rotation of a mounting member relative to the housing. The rotation of the mounting member allows the seal member to align with an instrument being inserted therethrough. The seal assembly is adapted to be detachably mounted to a cannula assembly for use in endoscopic surgery.

Mechanical thrombectomy systems including an elongate catheter configured as an elongate inversion support, a flexible tractor configured to roll and invert over the distal end of the elongate inversion support, and a clot engaging member on the distal end of an elongate manipulator are described herein. These systems may capture a clot using the clot engaging member and draw the clot and clot engaging member and roll the flexible tractor into the catheter to remove the clot and clot engaging member from a vessel.

A renal flow system injects a volume of fluid agent into a location within an abdominal aorta in a manner that flows bi-laterally into each of two renal arteries via their respectively spaced ostia along the abdominal aorta wall. A local injection assembly includes two injection members, each having an injection port that couples to a source of fluid agent externally of the patient. The injection ports may be positioned with an outer region of blood flow along the abdominal aorta wall perfusing the two renal arteries. A flow isolation assembly may isolate flow of the injected agent within the outer region and into the renals. The injection members are delivered to the location in a first radially collapsed condition, and bifurcate across the aorta to inject into the spaced renal ostia. A delivery catheter for upstream interventions is used as a chassis to deliver a bilateral local renal injection assembly to the location within the abdominal aorta.

A hemostasis cannula unit including a valve housing, a cap, and a hemostasis valve, wherein the hemostasis valve includes a proximal valve gasket and a distal valve gasket compressed against the valve gasket by the valve housing, wherein the proximal valve gasket is the same shape as the distal valve gasket.

A surgical instrument has an hourglass instrument seal operably coupled to the interior of the valve seal assembly. The hourglass instrument seal includes a top flange, a free floating lower flange and a rippled junction adjoining a top conical portion and bottom conical portion. An anti-inversion assembly biases the top flange apart from the lower flange. A tilt subassembly enables pivotal movement of the seal assembly using a ball and socket. Additionally, the cap housing may include a ball socket for slidably engaging the lower spherical section of the tilt assembly. A duckbill valve includes a pair of flaps, each having a plurality of reinforcing ribs. A fluid port is disposed at an acute upward angle relative to the channel. A cannula tube includes a plurality (e.g., three) independent parallel sets of evenly spaced threads.

A vascular access device and method of using is disclosed. The vascular access device includes a housing defining a cavity and adapted to connect to a catheter. A self-sealing injection port and a subhousing are also provided. The subhousing may be movably connected to the housing so that a position of the other end of the subhousing relative to the housing can be selectively adjusted within a range of positions. A unidirectional fluid valve permits solution flow from the subhousing to the housing. The vascular access device may be utilized in a variety of treatment protocols including medication administration, fluid sampling, and placement of balloon catheters or guide wire-based medical devices.

A steerable endoluminal device adapted for delivery into a patient's vasculature. The device includes a tubular member having a distal deflection portion that extends to the distal end and a main body portion that extends from the deflectable portion to the proximal end, the tubular member further including a stiff portion extending along the distal deflection portion, and being formed of polymeric material, which is disposed circumferentially adjacent to the stiff portion. The stiff portion is made of a material that has an elastic modulus greater than the elastic modulus of the polymeric material. A pull wire extends between the proximal end and the distal end of the tubular member and is attached to the distal deflection portion to control deflection of the distal deflection portion of the tubular member.

An iris-type valve assembly for controlling a flow of fluid. The assembly comprises a base member, a rotatable member, and an elongated elastomeric valve sheath. The distal end of the valve sheath is secured to the base member and the proximal end of the valve sheath is secured to the rotatable member. At least one of the valve sheath ends includes a flange that is secured to a valve-receiving surface of the base member or the rotatable member. The base member and the rotatable member are aligned to define an elongated passageway therethrough for passage of an interventional device, and the elastomeric valve sheath is disposed along the passageway and has a longitudinal opening therethrough for passage of the interventional device. Upon rotation of the rotatable member relative to the base member the longitudinal opening of the valve sheath is selectively constrictable to comprise a seal around the interventional device. The assembly may be provided with ratcheting members to inhibit recoil of the rotatable member, and rib members along the inner surface of the valve sheath to enhance the seal provided by the assembly.