415results about "Multi-lumen catheter" patented technology

Rapidly insertable central catheters (“RICCs”), introducers, and insertion devices including combinations and methods thereof are disclosed. For example, a RICC system can include an introducer and a RICC insertion assembly including a RICC assembly disposed in a RICC insertion device. The RICC assembly can include a RICC, an access guidewire, and a splittable casing over a catheter tube of the RICC and the access guidewire forming a longitudinal composite. The RICC insertion device can include a frame and a nose cover forming a split channel that splits away from a through channel of a nose of the frame. The RICC insertion device can be configured for advancing the RICC assembly by rolling the longitudinal composite across roller wheels disposed in the frame. The through channel can be configured for advancing the catheter tube therethrough while the split channel can be configured for both splitting and passing the splittable casing therethrough.

Rapidly insertable central catheters (“RICC”) and methods thereof are disclosed. In an example, a RICC includes a catheter tube, a suture wing disposed over a medial portion of the catheter tube, a hub coupled to a proximal-end portion of the catheter tube, and a number of extension legs extending from the hub. The catheter tube can include a first section in a distal portion of the catheter tube formed of a first polymeric material having a first durometer. The catheter tube can also include a second section proximal of the first section of the catheter tube formed of a second polymeric material having a second durometer less than the first durometer. The catheter tube can have a column strength sufficient to prevent buckling of the catheter tube when inserted into an insertion site and advanced through a vasculature of a patient without use of the Seldinger technique.

The double-cavity cannula comprises a cannula body, the cannula body comprises an outer tube with an opening in the upper end and an inner tube coaxial with the outer tube, the upper end of the outer wall of the cannula body is provided with a connecting part communicated with the cannula body in a matched mode, a plurality of blood guide side holes are formed in the lower portion of the outer wall of the outer tube, and the opening in the lower end of the inner tube is communicated with a blood guide hopper. A blood return assembly is arranged on the inner wall of the outer tube and above the blood guide hopper, a blood flow guide cover is arranged on the inner wall of a blood return opening of the blood return assembly in a matched mode, a balloon capable of being filled and emptied is arranged on the outer wall of the outer tube and above the blood guide side hole, a filling valve is arranged on one side of the outer wall of the connecting part, and the filling valve is communicated with the balloon through a filling pipeline. When blood is guided, the conditions of local blood vessel wall adsorption and unsmooth blood guiding cannot be easily caused by the design of the blood guiding side holes, and the injection effect, blood turbulence and hemolysis risk increase cannot occur during blood return.

The invention discloses a catheter with real-time monitoring and alarming functions and a catheter system, and relates to the technical field of medical instruments, the catheter comprises a catheter main tube, a balloon, an interface, a pressure sensor and a flow sensor; the drainage tube, the flushing tube and the balloon tube penetrate through the inner space of the catheter handle; the drainage cavity electromagnetic valve is matched with the drainage tube penetrating through the catheter handle and is arranged on the catheter handle; the flushing cavity electromagnetic valve is matched with the flushing pipe penetrating through the catheter handle and is arranged on the catheter handle; the control module is used for judging the current normal urination or abnormal urination of the catheter according to the internal pressure of the bladder and / or the urine flow rate, and if the urination is judged to be normal, the drainage cavity electromagnetic valve is controlled to keep the drainage channel communicated; if it is judged that urination is abnormal, the abnormal type is determined by analyzing the internal pressure of the bladder and / or the urine flow rate, and processing including alarming is carried out according to the abnormal type.

Disclosed herein are drug delivery devices including catheter assemblies, infusion systems, pre-filled syringes, methods of use, combination products, kits of parts, and drug products with parts lists for independent sourcing, for use in the otic administration of a drug product to a subject in need thereof.

The invention relates to the technical field of medical instruments, and provides a self-adaptive double-cavity cannula for pulsatile blood flow, the self-adaptive double-cavity cannula comprises a cannula body and an elastic diaphragm, the elastic diaphragm is arranged in the cannula body along the axial direction of the cannula body, the elastic diaphragm divides the internal cavity of the cannula body into a drainage cavity and a backflow cavity, and the drainage cavity is communicated with the backflow cavity. The far-end drainage opening and the near-end drainage opening are both communicated with the drainage cavity, the backflow opening is communicated with the backflow cavity, and the elastic diaphragm elastically deforms under the action of pulsatile pressure difference between the drainage cavity and the backflow cavity so as to dynamically change the overflowing sectional area of the drainage cavity and the overflowing sectional area of the backflow cavity. Thus, the elastic diaphragm is elastically deformed under the combined action of the blood flow pressure in the drainage cavity and the blood flow pressure in the backflow cavity, the overflowing area of the drainage cavity and the overflowing area of the backflow cavity can be dynamically adjusted in a self-adaptive mode along with the blood flow pulsation period, pulsation type blood flow generated by the heart can be well adapted, and the blood extraction efficiency and the blood infusion efficiency are effectively improved.

The invention discloses a microcatheter capable of dynamically adjusting the angle of a far-end outlet. A microcatheter capable of dynamically adjusting the angle of a far-end outlet comprises a catheter base body, and the catheter base body is provided with a first channel and a second channel which are arranged in the axial direction; the first channel is a fixed cavity channel and is used for guiding a first guide wire to pass through; the second channel comprises a side cavity and an axial guide cavity which are in butt joint and communicated, and an auxiliary moving cavity is formed in the second channel and used for guiding the auxiliary moving cavity to move; one end of the side cavity is butted and communicated with the end part, close to the fixed cavity end, of the axial guide cavity, the other end of the side cavity is an outlet end of the second channel, and a slope-shaped steering guide side wall is arranged on the inner wall of the side cavity; the auxiliary moving cavity is provided with a second guide wire channel for a second guide wire to penetrate through, and the far end of the auxiliary moving cavity is provided with an axially-arranged deformation area. The catheter base body is connected with a traction wire driving mechanism, and the far end of the traction wire is connected with the deformation area of the auxiliary moving cavity. According to the invention, multi-angle composite adjustment is realized.

Elongate medical devices with an expandable structure including elongated splines and a distal hub. An elongate medical device includes a handle including a control mechanism, a catheter shaft, and an expandable structure including elongated splines and a distal hub. Each of the elongated splines includes a shape memory material and an interactive element. Each of the elongated splines includes a respective spline proximal end and a spline distal end. Each of the spline proximal ends is connected to the catheter shaft distal end. Each of the spline distal ends is connected to the distal hub. A deflection control member is connected to the distal hub. The control mechanism is drivingly coupled to the distal hub via the deflection control member and operable to selectively vary a position of the distal hub relative to the catheter shaft distal end to selectively vary an amount of expansion of the expandable structure.

A catheter and method for the treatment of a patient having atrial flutter or other arrhythmia comprises an elongated catheter body having an outer wall, proximal and distal ends, and at least one lumen extending therethrough. Further it has a distal tip section comprising a flexible tubing having a proximal end and a distal end and a plurality of lumens extending therethrough. The proximal end of the tip section is fixedly attached to the distal end of the catheter body. The tip section further comprises a nitinol tube having slots formed therein which causes the distal tip section to deflect using the same puller-wire action used to cause the deflectable catheter to deflect at a point proximal to the distal tip section.

The present application provides a fixing-locking structure, including an inner cylinder body, a chuck and an outer cylinder body that sleeve a catheter. A first end of the outer cylinder body is provided with a first chamber to accommodate the chuck. A first end of the inner cylinder body is connected to the first end of the outer cylinder body. One end of the chuck abuts against an inner wall of the first end of the inner cylinder body, and the other end of the chuck abuts against an inner wall of the outer cylinder body corresponding to the first chamber. A clamping part is arranged at each of two ends of the chuck, and a compressing-fitting part is formed at a position where each of the inner cylinder body and the outer cylinder body abuts against the clamping part. The compressing-fitting part compresses the clamping part to contract inwards.

A retrograde delivery catheter includes at its distal end an expandable member configured to at least partially occlude the coronary sinus of a patient's heart, and has a length and variable stiffness that allows the distal end to be selectively articulated so as to be positioned in the coronary sinus. The delivery catheter has a triple lumen construction with a primary lumen extending between the proximal and distal ends and configured to allow a cardioplegic fluid to be delivered to the coronary sinus. A second lumen provides for balloon inflation while a third lumen allows monitoring of a pressure within the coronary sinus. A torque may be applied and a reinforcement member within the delivery catheter provides improved torque transmission along the length of the catheter.

A valve actuator that moves in a catheter assembly between a first position where a valve is closed and a second position where the valve is open, the valve actuator including a shaft portion at a distal end of the valve actuator that is configured to pierce the valve, a mating portion at a proximal end of the valve actuator that is configured to engage a Luer device, a diameter reduction region that connects the shaft portion and the mating portion, and a plurality of windows that extend through the valve actuator for flushing fluid, the plurality of windows being disposed in the diameter reduction region, wherein each of the plurality of windows does not extend a full length of the diameter reduction region.

The present disclosure relates to catheters (102) and methods for removal of kidney stones. The catheter comprises a handle portion (200), a tube portion including a vacuum lumen (114) through which a kidney stone can be removed and an irrigation lumen (116) through which an irrigation fluid can be supplied, a nozzle (150, 152) comprising a distal facing wall having a plurality of irrigation ports (136) in fluid communication with the irrigation lumen (134), and a plurality of pull wires (230) to cause a distal section of the tube portion to bend in one or more directions. Each of the irrigation ports (136) opens in both a distal-facing and lateral-facing direction.

A device for removing stones and foreign bodies from a human cavity including a straight sheath with one or more side branches; said straight sheath including a proximal tube and distal tube with respect to the operator who is holding the device; one or more side branches arise from the proximal tube and said branch or branches share a common lumen with the proximal and distal tubes; at the least, one of the side branches contains a pressure vent in the form of an opening that extends through the wall of the side branch and is sealed to form an airtight channel that extends toward a sealing element assembly. One or more openings at the end of this airtight channel serve as a transposed pressure regulating mechanism and are located and accessible on or near the surface of said sealing element assembly; an operator can regulate the aspiration pressure by covering or uncovering the vent or a portion of the vent.

The disclosed invention is in the field of medical devices, namely angioplasty balloon catheters. The embodiments provide an angioplasty balloon catheter that has favorable features of both biaxial and coaxial lumen configurations, such as pushability, torque, and trackability, enabled by a transition between a biaxial catheter segment and a coaxial catheter segment. In an exemplary embodiment a biaxial-coaxial lumen configuration facilitates injection of fluids through the catheter and out of the catheter proximal to its distal tip end with a guidewire in place in the catheter.

The medical device is provided with: a first tube having a melting point of a first temperature; a second tube having a melting point of a second temperature, which is different from the first temperature, and whose distal end is positioned further toward a proximal end side than a proximal end of the first tube; and a connection member having a melting point of a third temperature, which is higher than the lower of the first temperature and the second temperature. The connection member is in contact with each of the first tube and the second tube, and indirectly connects the first tube and the second tube while maintaining a separation between the proximal end of the first tube and the distal end of the second tube. The connection member provides a continuous path between the first tube and the second tube.

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 medical device includes a sheath assembly (1000), a catheter assembly (2000) and an expandable assembly (3000). The catheter assembly (2000) is partially disposed inside the sheath assembly (1000) and includes a first tubular body (2100) axially movable relative to the sheath assembly (1000). The expandable assembly (3000) is sleeved over an outer circumferential surface of a distal end of the first tubular body (2100), and the outer surface of the expandable assembly (3000) is configured for loading a drug. The medical device is configured so that axial movement of the first tubular body (2100) relative to the sheath assembly (1000) causes the expandable assembly (3000) to be in a radially collapsed configuration in which it is confined within the sheath assembly (1000), or in a radially expanded configuration in which it is at least partially exposed outside the sheath assembly (1000). When in the radially expanded configuration, the expandable assembly (3000) comprises a first fluid passage (3001) axially extending therethrough. The medical device can treat atherosclerosis, does not block the blood flow, can prolong the treatment time, and has a good treatment effect.

The present disclosure provides a catheter system including a plurality of fenestrations along the shaft of the catheter, wherein the fenestrations allow for continuous or intermittent infusion of antiseptics and / or antibiotics to avoid and treat bacterial colonization or infection of the subcutaneous tract and to minimize subcutaneous tunnel colonization and fibrin sheath in symptomatic or asymptomatic patients. The present catheter system can also include a removable abrasive component on the catheters tip to assist with mechanical debridement of subcutaneous tract and intravascular fibrin sheath.

A device for perfusing the coronary sinus of a target heart, comprising a double-lumen catheter including a first lumen having a proximal opening and a distal opening configured to be disposed within the coronary sinus of the target heart, and a second lumen parallel to the first lumen, the second lumen having a proximal opening and a distal opening longitudinally offset from the distal opening of the first lumen toward the proximal opening of the second lumen, the distal opening of the second lumen being configured to be disposed within the right atrium of the target heart, and an oxygenator connected to the proximal openings of the first lumen and the second lumen, the oxygenator being configured to oxygenate deoxygenated blood.

A method of manufacturing a medical device includes forming a drainage conduit for removing fluids from a patient and forming one or more flexible delivery conduits for delivering medication. The delivery conduits are attached to and detachably disposed in channels on an exterior surface of the drainage conduit, each being substantially flush with the surface and peelable at one or both ends. The channels may partially surround the delivery conduits and include lips or friction features for retention. The method may include forming multiple channels, permanently attaching portions of the delivery conduits, and providing drainage holes along a length of the drainage conduit. Additional features may include attaching luer locks to the delivery conduits, constructing the conduits from flexible materials, and fabricating components via extrusion. Optional design variations include concentric delivery conduit placement, non-circular cross-sections, and threading to enable suturing or attachment to other medical components or devices.

A device for safely and effectively disinfecting a catheter while it remains implanted in a patient's body is provided. [Solution] Methods and devices for providing therapeutic electromagnetic radiation (EMR) to inactivate infectious agents and / or enhance healthy cell growth in, on, or around a catheter (10) placed in a patient's body cavity. Non-ultraviolet therapeutic EMR is transmitted axially along the lumen of the catheter body and / or along an optical element (14) within the catheter body. Delivery of the therapeutic EMR to specific infected areas and / or areas requiring tissue healing results in inactivation of primary sources of infection in, on, and around the catheter and / or enhancement of healthy cell growth around the catheter through the use of controlled relative intensity and treatment-site-specific dose projection of the therapeutic EMR radially emitted from the optical element. Specific embodiments for urinary catheters and peritoneal dialysis catheters are also disclosed.

The disclosure relates generally to the field of medical devices for accessing body lumens. In an embodiment, a catheter may include a shaft having a proximal end, a distal end, and a length along a longitudinal axis extending through the shaft. A plurality of lumens may extend along the length of the shaft. At least one reinforcing filament may extend along the length of the shaft and between at least two of the plurality of lumens.

Medical delivery devices, such as catheters, and their methods of use and manufacture. The medical delivery devices are adapted to facilitate the delivery of an agent into a patient. The medical delivery devices may have one or more deformable lumens, each of which has a collapsed configuration and an open configuration. The medical delivery devices may include one or more agent delivery ports, any one of which may be proximal or distal to an expandable device, such as a balloon.

Systems, methods, and devices for performing heart procedures include a multi-functional catheter with a multi-lumen arrangement. The multi-lumen arrangement includes a central lumen formed by an inner tube with multiple pressure channels embedded in the wall of the catheter. The central lumen has a first end hole terminating at a distal end of the multi-functional catheter. The outer lumen has one or more second side holes. Moreover, a welded tip can maintain a consistent diameter for the distal end. Multiple radiopaque markers can identify various portions of multi-functional catheter to aid in positioning the lumens at different placements in the heart and / or crossing the aortic valve. Accordingly, multiple diagnostic procedures can be performed with the multi-functional catheter, such as a coronary angiogram and a trans-valvular pressure gradient measurement, while omitting reliance on additional catheters or a digital console system.

A multi-lumen catheter includes a body 101 that is formed into a cylindrical shape and extends from a proximal end to a distal end and surrounded by an outer wall 113; an inner space of the body 101 being divided with a partition 114 extending in a longitudinal direction, into a plurality of lumens including a first lumen 111 and a second lumen 112. The second lumen 112 has a second opening plane 122 at its distal end, and the first lumen 111 has a first opening plane121 at its distal end, the second opening plane 122 being positioned more distally than the first opening plane 121. The outer wall 113 includes a first outer wall portion 115 defining the first lumen 111 and a second outer wall portion 116 defining the second lumen 112, the first outer wall portion 115 having a first lumen slit 123 notching a portion of a distal end of the first outer wall portion 115. The body 101 includes a flexible portion 141 having a lower hardness, the flexible portion 141 including a distal end portion of the first outer wall portion 115 wherein the first lumen slit 123 is provided.

Implementations of the present disclosure generally relate to medical aspiration devices and their methods of use. In some cases, the devices are configured to create a vacuum to capture and / or immobilize a solid deposit at a location internal to a subject. Such configurations may be useful, for example, for removing intact kidney stones small enough to pass through the ureter. In some cases, the devices further include an ablation instrument. Such devices may be useful, for example, for ablating larger solid deposits into a plurality of smaller particles at a location internal to the subject (e.g., ablating kidney stones that are too large to pass through the ureter). In some cases, the vacuum created by the devices is used to remove the plurality of smaller particles from the location internal to the subject.

A catheter 100 including: an elongated body 103 sized to traverse vasculature; a lumen 116 formed in the elongated body; and a pull-wire 126. The elongated body has a transition zone disposed between proximal and distal ends of the elongated body, a first shaft extending from the proximal end of the elongated body to the transition zone 122 and defining a longitudinal axis, and a second shaft extending proximally from the distal end to the transition zone. The lumen defines a curved path 118 curved about the longitudinal axis and extending from the distal end to the transition zone, and a straight path 116 extending from the transition zone to the proximal end. The pull wire extends within the curved and straight paths, and is anchored to the second shaft such that translation of the pull-wire near the proximal end deflects the second shaft substantially along the curved path.

This allows for the insertion of multiple medical devices into the patient's vascular system via a single access point through an introducer sheath. [Solution] The intravascular system includes an introducer sheath 104 having a lumen of fixed diameter, a first medical device 102, and a catheter 106 having a proximal end and a distal end coupled to the first medical device. When the catheter is placed within the introducer sheath, an annular gap is formed between the outer circumference of the catheter and the inner circumference of the lumen. The catheter is configured to take on different dimensional forms such that the size of the catheter and the annular gap are variable.

Provided is a balloon catheter comprising: an outer-side tube 11; an inner-side tube 12 which is inserted into a lumen 11a of the outer-side tube 11 and the base-end part of which is bonded to the outer-side tube 11; and a core wire 30 which is inserted into the lumen 11a of the outer-side tube 11 and is extended further toward the leading-end side than the base-end part of the inner-side tube 12. In an overlap range 35 in which the inner-side tube 12 and the core wire 30 overlap in the axial direction, a partition part 37 is disposed at an intermediate position in said axial direction. A hole part 41 through which the inner-side tube 12 is inserted and a hole part 42 through which the core wire 30 is inserted are formed in the partition part 37. The inner-side tube 12 is anchored to the outer-side tube 11 via the partition part 37, and the core wire 30 is not anchored to the partition part 37.