3915results about "Tube connectors" patented technology

A device for inserting a cannula into tissue, including a cannula, a protective element which can accommodate said cannula, an operating element for moving the cannula out of the protective element, and a holder fixedly connected to the cannula. The invention encompasses a system for connecting a liquid supply to the cannula.

A surgical instrument particularly suited to endoscopic and laparoscopic insertion through a cannula of a trocar into an insufflated body cavity or lumen includes a bending member in an elongate shaft that acts to rotate an end effector about an articulation pivot joint. A proximally directed camming surface (e.g., gear segment, cam recess) aft of a pivotal attachment of the end effector to a proximal frame ground of the elongate shaft interacts with a bending member whose proximal end is ground to the proximal frame ground. Differential fluidic actuators or mechanical cam bars deflect a distal end (e.g., rack, cam point) of the bending member to effect articulation. Thereby, the end effector may act upon tissue that would otherwise be obscured, such as behind an organ. The articulated end effector also advantageously allows an endoscope to be positioned behind the end effector without being blocked by the instrument shaft.

An apparatus may include a needle for sustained delivery of drugs and other agents to the inner ear or other tissues of a human or an animal. The needle can include an insertion stop, and can be placed through the round window membrane or through a surgically-prepared hole in a bone. The needle can be in fluid communication with a port and / or with a micro-infusion or osmotic pump. A cochlear implant electrode can be used instead of a needle.

A medical catheter assembly including a removable inner sleeve. In one embodiment, the assembly is a low profile percutaneous endoscopic gastrostomy (PEG) device and comprises a body, a clamp, a feeding tube, a cap and an inner sleeve assembly. The body includes a base portion and a sleeve portion, the base portion being dimensioned to engage the skin of a patient and having a transverse bore, the sleeve portion extending upwardly from the base portion and having a longitudinal slot aligned with the transverse bore and a transverse slot intersecting the longitudinal bore. The clamp, which is slidably mounted on the base portion and across the transverse slot of the sleeve, comprises a plate having a transverse opening. The transverse opening has a wide region and a narrow region, the two regions being alternately alignable with the longitudinal bore to open and to close, respectively, the feeding tube. The feeding tube has a distal end adapted to be anchored to the inside of a patient and a proximal end inserted up through the base portion and the sleeve portion, including the transverse opening of the clamp situated within the sleeve, and then inverted over the top edge of the sleeve. The cap is then mounted on top of the sleeve so as to secure the inverted end of the catheter to the exterior of the sleeve. The cap is provided with an opening through which access to the catheter may be gained. An inner sleeve, sized to engage the inside surface of the feeding tube, is removably inserted through the cap and the feeding tube, the inner sleeve having a proximal end to which a tubular fitting is secured. Food and / or medications are dispensed to the patient through the fitting and the inner sleeve and, in this manner, prevent clogging of the feeding tube.

A vial adapter having a needle-free valve, a sharpened cannula used to perforate a vial's rubber stopper, and a circular array of claws of different lengths to engage vial closures of different diameters. The array of claws includes a first set of claws each having a first length extending inwardly from the periphery of the housing of the adapter and a second set of claws alternating with the first set of claws and each having a longer length. The second set of claws are mounted so that they deflect and plastically deform out of the way in the case where the adapter is engaged with a vial that exceeds a predetermined size. The housing includes a shroud that is at least as long as the sharpened cannula to protect medical personnel who use the adapter from inadvertent punctures. The needle-free valve includes a resiliently deformable piston element with a naturally open bore. The interior of the piston provides a fluid flow path through the adapter. In one embodiment, the first set of claws of the adapter may be used with a vial closure of at approximately 20 mm in diameter and the second set of claws may be used with a vial closure of approximately 13 to 17 mm in diameter.

An infusion set comprises a base member, an introducer cap, and an infusion cap. The base member preferably comprises a soft cannula extending from a lower side of the base member, and a port on an upper side thereof. The port is configured to be in fluid communication with the cannula. The port also comprises a septum adapted to seal the port against unwanted fluid flow. The introducer cap is adapted to be mounted to the base member and has a needle adapted to extend through the septum and said soft cannula in an assembled position. The infusion cap comprises a lumen adapted to receive an elongate flexible tube. The infusion cap also comprises a hard cannula adapted to be inserted through the septum and to place said soft cannula in fluid communication with said lumen.

A medical device for delivery of a fluid to a patient from a line terminating in a tubing needle. The medical device includes a cannula assembly for coupling the fluid into a cannula that is inserted into the patient. The cannula assembly has a first locking element disposed in a fixed position with respect to the cannula. Coupling the line to the cannula assembly is an infusion flap. The infusion flap includes a second locking element for engaging the first locking element of the cannula assembly and a lift tab for disconnecting the infusion flap from the cannula assembly. Coupling of the first and second locking elements requires initial mating of the infusion flap and cannula assembly followed by locking through rotation of the infusion flap with respect to the cannula assembly.

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.

Cap and cleaning devices antiseptically maintain patient fluid line access valves to minimize the risk of infection via catheters. The devices have a cap that may contain a dry pad impregnated with an antimicrobial agent. The cap covers the access portion of the access valve when not in use. The devices have a hood that contains a wet pad impregnated with a cleaning solution and, optionally, an antimicrobial agent. The wet pad cleans the access portion of the access valve prior to and optionally, after the access valve is utilized to access the patient fluid line.

A volume of fluid moved by a pump, such as a pump in an APD system, may be determined without direct measurement of the fluid, such as by flow meter, weight, etc. For example, a volume of a pump chamber (181) (having a movable element that varies the volume of the pump chamber) may be determined by measuring pressure in the pump chamber and a reference chamber, both while the two chambers are isolated from each other, and after the two chambers are fluidly connected so that pressures in the chambers may equalize. Equalization of the pressures may be assumed to occur in an adiabatic way, e.g., a mathematical model of the system that is based on an adiabatic pressure equalization process may be used to determine the pump chamber volume. In one embodiment, pressures measured after the chambers are fluidly connected may be measured at a time before complete pressure equalization has occurred, and thus the pressures for the pump and reference chambers measured after the chambers are fluidly connected may be unequal, yet still be used to determine the pump chamber volume.

An elbow assembly for use in a respiratory mask, which includes an elbow, an inlet port, an exhaust port, and a baffle separating the inlet port from the exhaust port. A mask assembly includes a cushion comprising at least one gusset and an aperture for connection to the elbow assembly.

A luer fitting is disclosed. The luer fitting includes a body having a first end and a second end, wherein the first end comprises an antibacterial component disposed therewith. The luer fitting is connected over a catheter that has been primed with a locking solution. The antibacterial component is fluidly engaged with the locking solution such that the antibacterial component diffuses through the locking solution. A method of reducing antibacterial activity in a catheter utilizing the fitting is also disclosed.

An improved pump, reservoir and reservoir piston are provided for controlled delivery of fluids. A motor is operably coupled to a drive member, such as a drive screw, which is adapted to advance a plunger slide in response to operation of the motor. The plunger slide is removably coupled to the piston. The piston comprises a first member and a second member. The first member has an external proximate side and an external distal side. The external proximate side is adapted to contact the fluid and is made of a material having a first stiffness. The second member has a first side and a second side and is at least partially disposed within the first member. The first side of the second member is adjacent to the external proximate side of the first member and is made of a material having a stiffness which is greater than the first stiffness.

A needleless luer access connector is disclosed having a septum disposed in a housing. The septum has a proximal portion with a cross section, a medial portion with a cross section smaller than the cross section of the proximal portion, and a distal portion. A longitudinal slit extends through the septum from the proximal portion to the distal portion. The septum and housing are designed so that septum will not be rotated or removed from the housing when the connector is accessed by a male luer taper. In addition, the septum and housing are designed to bias the slit at the distal portion closed and so a male luer connector does not have to extend completely through the distal portion to open the slit at the distal portion. Finally, the septum and housing are designed to minimize the amount of dead space in the connector when accessed with a male luer taper.

An improved pump, reservoir and reservoir piston are provided for controlled delivery of fluids. A motor is operably coupled to a drive member, such as a drive screw, which is adapted to advance a plunger slide in response to operation of the motor. The plunger slide is removably coupled to the piston. A method, system, and an article of manufacture for automatically detecting a force sensor failure in a medication infusion pump is provided. The electrical current to an infusion pump is measured. Based on the current measurements, the infusion pump detects when the plunger slide is seated in the reservoir, and detects a problem with the force sensor when the force sensor independently fails to register a value indicating that the plunger slide is seated in the reservoir.

A biopsy device for taking tissue samples, includes a housing, a removable element and a control panel. The housing contains an electric power source and a tension slide connected to the power source. The tension slide may be brought into a cocked position against the action of a spring by the power source. The removable element is configured for insertion into the housing and includes a biopsy needle unit, a vacuum pressure-generating device and a control panel. The removable element may be provided as a sterile package unit. The biopsy needle unit can be arranged on the tension slide and includes a hollow biopsy needle with a sample removal chamber and a cutting sheath. The biopsy device can be held in one hand and is fully integrated with all components required to perform a vacuum biopsy such that no cables or lines are required to other external units.

A vascular catheter system comprises a catheter body having a proximal and distal portion and a single common lumen therebetween. The catheter body includes a first connector secured to the distal end of the proximal portion and a second connector secured to the proximal end of the distal portion. The connectors can be selectively connected to each other to join the lumens of the proximal and distal portions together in a continuous, axially fixed relationship. Disposed within the lumens, when the proximal and distal portions are joined together, is a drive cable. The drive cable may be movably, rotatable about its own longitudinal axis and carries at its distal end, a work element, which is typically an ultrasonic imaging transducer or interventional device. The lumen carrying the cable will be sufficiently large along a proximal portion to permit preferential collapse of the cable should rotation of the distal end become impeded. The catheter body may be made of a polymer or plastic material, such as polyetheretherketone (PEEK), which provides adequate bonding stiffness and resistance to kinking from large hoop stresses.

The present disclosure provides a packaged medical device including a container for receiving a medical device having a passageway defined therein and a port for permitting the sterile passage of an agent between the outside of the container and the passageway defined within the medical device.

A pair of nestable caps are disclosed, each of the caps being sized and shaped to provide a protective union about a separated medical connector. The pair comprises a male cap and a female cap, each of which is configured to be adjoined to a complimentary cap to form a nested pair. The nested pair is sealed until separated for use, thereby maintaining sterility of the internal surfaces of the nested pair. One of the caps may have a fluid chamber joined thereto filled with medicine or antiseptic. The cap can have a channel extending therethrough to provide fluid communication between the fluid chamber and a fluid pathway. The fluid chamber can be adapted to diffuse the fluid into the fluid pathway over time, or the fluid chamber can be adapted to dispense the fluid out of the fluid chamber without reflux.

A subcutaneous port catheter system includes a reservoir defining a chamber therein. The catheter system also includes a guide catheter attached to the reservoir. The guide catheter has a guide lumen and a distal guide orifice. The catheter system further includes an inner catheter attached to the reservoir. The inner catheter is positioned within the guide lumen and extends through the distal guide orifice. A method of advancing fluid into a blood vessel of a body of a patient is also disclosed.

The present invention relates to a method and device (1) for releasing into the body from a delivery system a medical prosthesis mounted on the delivery system and held by a constraint (16) in a constrained delivery disposition. The device comprises a first abutment (28) for the delivery system, a second abutment (18) for an elongate element (30) to connect the device to the prosthesis constraint, a track (14) for the second abutment (18) to advance along, from a starting point corresponding to constraint of the prosthesis, to a finishing point corresponding to separation of the prosthesis and constraint (16), ratchet means (38) to advance the second abutment (18) progressively, from the starting point to the finishing point, in a plurality of actuation strokes, and is characterised by a full stroke actuator (24), to advance the second abutment (18) all the way from an intermediate point on said track (14) to said finishing point in one single stroke of the said actuator (24), the intermediate point being selectable by the user within a portion of the track (14) which extends over at least half the length of the track.