260 results about "Catheter placement" patented technology

A catheter configured to deliver energy circumferentially around an anatomical lumen in which the catheter is positioned. The catheter includes an elongate structure configured to transform between a low-profile delivery state and a radially expanded deployed state. The elongate structure mechanically supports one or more electrodes configured to emit energy and includes an outer jacket comprising a polymer. The catheter defines a material boundary adjoining the outer jacket and at least one electrode to enable a mechanical adhesion between the polymer of the outer jacket and the electrode. In examples, the polymer intrudes into one or more volumes defined by asperities in a surface of the electrode to enable the mechanical adhesion. In examples, material boundary is formed by reflowing the polymer.

A placement system for tracking, placing, and monitoring a catheter assembly or other medical device inserted into a body of a patient is disclosed. The placement system utilizes optical fiber-based strain sensors to assist with catheter placement. In one embodiment, the placement system comprises a console including a processor and a plurality of optical fiber-based strain sensors included with the catheter. A light source is also included and configured to operably connect with the strain sensors and produce outgoing optical signals incident on the strain sensors. A photodetector is included and configured to operably connect with the strain sensors and receive return optical signals from the strain sensors. A processor is configured to process data from the return optical signals. The data relates to an aspect of the catheter. A user interface such as a display is configured to communicate information relating to the aspect of the catheter.

A vasculature assessment device includes an imaging probe configured to acquire raw image data of a blood vessel of a patient and a device module having a console coupled with the imaging probe. Logic stored in memory device module determines blood vessel data from the raw image data and applies a trained machine learning model to the blood vessel data to determine suggested catheter parameters for catheter to be inserted within the blood vessel. A vasculature assessment system includes a plurality of the vasculature assessment devices and a computing system coupled with the vasculature assessment devices. Machine learning logic of the computing system performs a machine learning algorithm on historical catheter placement data sets to define the trained machine learning model.

A vasculature assessment device includes an imaging probe configured to acquire raw image data of a blood vessel of a patient and a device module having a console coupled with the imaging probe. Logic stored in memory device module determines blood vessel data from the raw image data and applies a trained machine learning model to the blood vessel data to determine suggested catheter parameters for catheter to be inserted within the blood vessel. A vasculature assessment system includes a plurality of the vasculature assessment devices and a computing system coupled with the vasculature assessment devices. Machine learning logic of the computing system performs a machine learning algorithm on historical catheter placement data sets to define the trained machine learning model.

The invention is a delivery catheter, e.g., a guide catheter, having an imaging element in proximity to the distal end of the catheter. Catheters of the invention are able to placement of the catheter in proximity to an ostium, thereby increasing the efficiency of contrast delivery while reducing the risk of ischemia due to blocked blood supply. The invention additionally assists in maintaining catheter position during delivery of a fluid from the catheter, resulting in better performance with less fluid. For example, a catheter of the invention can be used to produce improved fluoroscopic images with less overall contrast. This improvement reduces the risk of an allergic reaction to the contrast while decreasing the length of time for a procedure, i.e., because of a need to re-contrast.

An insertion tool for inserting a catheter into a patient's body is disclosed. The insertion tool unifies needle insertion, guidewire advancement, and catheter insertion in a single device. In one embodiment, the insertion tool comprises a housing (54) in which at least a portion of the catheter (42) is initially disposed, a hollow needle (16) distally extending from the housing with at least a portion of the catheter pre-disposed over the needle, and a guidewire (22) pre-disposed within the needle. A guidewire advancement assembly (20) is also included for selectively advancing the guidewire distally past a distal end of the needle in preparation for distal advancement of the catheter. A catheter advancement assembly (140) is also included for selectively advancing the catheter into the patient. The catheter advancement assembly includes a mechanical advantage mechanism (1200) coupled between the slide of the insertion tool and the catheter.

A method of inserting a catheter into a vasculature of a patient can include disposing the catheter into a housing. The housing can include a blood flash indicator, having a syringe plunger fixed to the housing and a syringe barrel slidable relative to the syringe plunger. The method can further include positioning the housing adjacent the vasculature, inserting a needle into the housing and through a lumen of the catheter until a distal tip of the needle extends from a distal end of the catheter, and accessing the vasculature via the distal tip of the needle. The method can further include sliding the syringe barrel in a proximal direction relative to the syringe plunger to create a vacuum in a lumen of the needle to thereby draw blood through the lumen of the needle and into the syringe barrel.

A catheter placement system includes a location sensor configured for placement on a patient, a drape configured to cover the patient and the location sensor, and a connector tethered to a stylet. The location sensor can include an exterior channel having a channel length, an exterior alignment notch positioned above the exterior channel, the exterior alignment notch having a notch length less than the channel length, and an interior receptacle including an electrical contact. The connector can include an alignment protrusion and a piercing element having an electrical contact, the connector configured to couple to the location sensor through the drape. The alignment protrusion of the connector can be configured to move through the exterior alignment notch and into the exterior channel. The piercing element can be configured to pierce the drape and form an electrical connection with the electrical contact in the interior receptacle.

A catheter configured for placement within a bodily lumen, comprises: a catheter sheath defining a first lumen for medical tools; and an exchange segment defining a second lumen for a guidewire. A proximal end of the exchange segment is joined with a distal end of the catheter sheath in a lengthwise direction forming an angle therebetween, such that the second lumen is laterally offset by a distance and angled with respect to the first lumen. When the catheter is placed within a patient's anatomy, the catheter sheath and / or the exchange segment straightens out so that the axis of the second lumen and the axis of the first lumen become substantially parallel to each other. The offset distance between the axes of sheath and exchange segment depends mainly on the diameter of the guidewire to be used, on the diameter of the sheath, and the angle of the junction.

The invention discloses a PICC (Peripherally Inserted Central Catheter) tip precise navigation fixing method and system based on electrocardiogram real-time positioning. High-precision positioning and safe fixing of a catheter tip are realized through a multi-modal data fusion and deep learning technology. The method comprises the following steps: collecting intracavity electrocardiosignals (ECG) in real time through a catheter built-in electrode, and obtaining blood vessel wall contact pressure and temperature data in combination with an optical fiber sensor; an improved wavelet threshold algorithm is adopted to dynamically suppress motion artifacts, and P-wave features are enhanced; the preprocessed ECG signals are input into a spatial-temporal feature fused Transformer model, a time attention layer is used for analyzing P-wave time sequence changes, a space attention layer integrates multi-lead space distribution features, and the positioning precision is optimized in combination with preoperative blood vessel anatomical data; the ECG positioning result and the optical fiber sensing data are fused through Kalman filtering, three-dimensional position information of the tip end of the catheter is generated, and real-time navigation is conducted on an augmented reality interface; and when the P wave amplitude reaches a CAJ threshold value, the contact pressure is safe and no abnormal temperature exists, a shape memory alloy (SMA) fixing ring is triggered to contract, and accurate fixing is achieved. The method solves the problems that a traditional method depends on X rays and is poor in anti-interference performance, has the advantages of being free of radiation, high in real-time performance and adaptive to blood vessel deformation, and is suitable for clinical P catheter implantation.

An apparatus includes a catheter, an introducer, and an actuator. A distal end portion of the introducer is configured to be coupled to a peripheral intravenous line. The introducer defines an inner volume having a first portion that defines an axis parallel to and offset from an axis defined by a second portion. A first portion of the actuator is movably disposed in the first portion of the inner volume. A second portion of the actuator is movably disposed in the second portion of the inner volume and coupled to the catheter movably disposed in the second portion of the inner volume. The actuator moves the catheter between a first position, in which the catheter is disposed within the introducer, and a second position, in which at least a portion of the catheter is disposed within the peripheral intravenous line.

The utility model discloses an intrabronchial valve loader, which comprises a base, a funnel barrel part and a sleeve, the sleeve is sleeved at the front end of the base, the funnel barrel part is arranged in the middle of the base, a support funnel is arranged at the rear end of the funnel barrel part, a valve placing cavity is arranged in the center of the funnel barrel part, and a valve is arranged in the valve placing cavity. The valve containing cavity penetrates through the front portion and the rear portion of the funnel cylinder part and is communicated with the support funnel, the support funnel is used for containing a bronchial internal valve in an initial state, and the support funnel is in a funnel shape. The bronchial tube loading device has the advantages that the bronchial tube inner valve is contracted and pulled into the long and narrow placing cavity by pulling the sleeve, the front end of the catheter is fixed in the catheter placing groove, the push rod is used for pushing the bronchial tube inner valve to enter the front end of the catheter, loading can be achieved, and the whole process does not need to touch loading with hands or other tools; the operation is convenient, excessive processes are avoided, the cleanness of the valve in the bronchus is ensured, and the smooth operation is facilitated.

A labial retention device includes a body defining a pair of wings defining therebetween a central opening permitting visualization of urethral and vaginal openings when the device is in contact with a genital region of female anatomy. The body's rear surface bears skin-adhering adhesive. The body may define sidewalls for retaining labia and / or other bodily tissue in displaced positions, and may include an anterior tab and / or a posterior tab to aid in securement and / or act as a shield to prevent unwanted bodily contact. The wings of the body may be joined to form a closed loop encircling the central opening, or be joined such that the central opening is not encircled by the wings. During use, labial / urogenital tissues are displaced and adhered to the rear surface of the labial retention device, which in turn retains the displaced labia / tissues in a spread / displaced position to aid in visualization and catheter placement purposes.

A catheter placement system for drawing a medical tube through a sheath includes a suction generation device and further includes one or more suction adapter devices that enable connection of the suction generation device to the sheath and facilitate insertion of the medical tube into the sheath. The one or more suction adapter devices are operable for lateral removal from the sheath and the medical tube, enabling connection of the medical tube to one or more external devices prior to drawing the medical tube through the sheath.

The utility model relates to the technical field of catheter placement devices, and discloses a sow catheter intubation auxiliary device which comprises an expansion column made of transparent materials, and an illuminating lamp is inserted in the middle of the expansion column; the inflation part is arranged on the surface of the expansion column and is made of a transparent material, and at least one catheter clamp is arranged on the surface of the inflation part; the moving part is located on the outer side of the inflation part and slidably connected with the expansion column, and a top inner cavity is higher than the top face of the clamp; the amplifying part is adjustably arranged at the top of the moving part corresponding to the urethral orifice of the sow. Through the cooperative arrangement of the expansion column, the illuminating lamp and the inflation piece, the whole body can be a luminous body in use, the illuminating effect is achieved, and the sow vaginal orifice inserting device is more convenient to insert into the sow vaginal orifice.

The invention discloses a visual catheter placement device for pet hospitals, which comprises an observation device and further comprises a catheter, the front end of the observation device is provided with a sleeve, and the visual catheter placement device further comprises a split type expansion tube and a clamping device; the split-combined type expansion tube comprises two tube bodies with semicircular cross sections, the two tube bodies are movably connected on one edge strip of each tube body, notches are symmetrically cut in the opposite edge strips of each tube body, the two tube bodies are matched to form a round tube when the two tube bodies are combined, and the two notches are matched to form an operation hole. The circular tube and the operation hole are matched with the catheter; the split-combined type expansion tube is movably sleeved on the sleeve, and the clamping device is sleeved outside the split-combined type expansion tube and is used for fixing the split-combined type expansion tube on the sleeve. The operation difficulty of pet catheter catheterization can be reduced, and the catheterization success rate is increased.

A catheter placement system for placing a catheter, the system includes a stylet with an optical fiber extending therethrough, the stylet body extending between a proximal end and a distal tip. A console, equipped with optical logic, delivers broadband incidence light to the optical fiber and receives reflected light signals to determine positional information about the stylet body. The stylet body is configured to be separable at a point between the proximal end and distal tip to allow a catheter to be advanced over a distal portion of the stylet body. The distal portion is configured to be reattached to the proximal portion to reconfirm the position of the stylet body distal tip prior to removal of the stylet from the catheter. The system further includes a severing device that is easy to actuate and ensures a clean, perpendicular cut to facilitate reconnection between the proximal and distal portions.

Catheter placement systems for split tip catheters can include a first guidewire, a second guidewire and a link slidably engaged with each. As the first guidewire is a withdrawn proximally, a stopping feature urges the link towards the split tip feature, transitioning the split tip feature from a Y-shape to a placement configuration, extending parallel to the axis of the catheter. Embodiments include a rod engaged with a first guidewire and a sheath extending proximally to retain the split tip feature in a placement configuration. The rod and sheath can then be withdrawn proximally through the first lumen to disengage the catheter. Embodiments include a magnetic element configured to secure a distal tip of a first guidewire with a distal tip of a second guidewire to retain the split tip feature in a placement configuration.

A catheter placement system for placing a catheter, the system including a stylet with an optical fiber (135) extending therethrough, a stylet body (290) extending between a proximal end and a distal tip (290). A console (20), equipped with optical logic, delivers broadband incidence light to the optical fiber and receives reflected light signals to determine positional information about the stylet body. The stylet body is configured to be separable at a point between the proximal end and distal tip to allow a catheter to be advanced over a distal portion of the stylet body. The distal portion is configured to be reattached to the proximal portion to reconfirm the position of the stylet body distal tip prior to removal of the stylet from the catheter. The system further includes a severing device that is easy to actuate and ensures a clean, perpendicular cut to facilitate reconnection between the proximal and distal portions.

Disclosed herein are methods of reducing or preventing the complications associated with the percutaneous placement of central venous catheters within a patient, including methods of reducing or preventing central venous stenosis. These methods can involve coating at least a portion of the exterior of the central venous catheter with a coating that reduces friction between the exterior surface of the catheter body and an endothelial wall of the vein. Upon placement the catheter within the vein of the patient, the coating can reduce friction between the catheter body and the walls of the blood vessel, thereby reducing irritation and / or injury of the blood vessel.

Disclosed herein is a vasculature evaluation device comprising: an imaging detector configured to acquire raw image data of a blood vessel of a patient; and an equipment module having a console coupled with the imaging detector. Logic stored in the memory device module determines blood vessel data from the raw image data and applies a trained machine learning model to the blood vessel data to determine suggested catheter parameters for a catheter to be inserted into the blood vessel. A vasculature assessment system includes a plurality of vasculature assessment devices and a computing system coupled to the vasculature assessment devices. Machine learning logic of the computing system executes a machine learning algorithm on the historical conduit placement data set to define a trained machine learning model.

A medical device for use in catheter application has a longitudinal axis and a capillary portion that is elongate coaxially to the longitudinal axis between a proximal capillary end and a distal capillary end. The capillary portion has a flexurally resilient design and a capillary outside diameter. A dilator portion, which is elongate coaxially to the longitudinal axis between a proximal dilator end and a distal dilator end axially adjoining the proximal capillary end, has a dimensionally stable design and a dilator outside diameter that is larger than the capillary outside diameter at least in sections. A lumen, which is elongate coaxially to the longitudinal axis continuously between the proximal dilator end and the distal capillary end through the dilator portion and the capillary portion, is configured for receiving a cannula.

The utility model discloses a catheter fixing band convenient to store, which belongs to the technical field of medical instruments and comprises a mounting block. A fixing mechanism and two supporting assemblies are installed on the installation block, the fixed ends of the first connecting belt and the second connecting belt are fixedly installed on the rear side face of the installation block, and hook-and-loop fasteners used in cooperation are installed at the other ends of the first connecting belt and the second connecting belt. The fixing mechanism comprises an adjusting assembly and a main body assembly, the adjusting assembly is mounted on one side in the mounting block, the main body assembly is mounted on the other side in the mounting block, and the adjusting assembly and the main body assembly can be moved and folded together to clamp the guide pipe. Through the mode, the distance between the adjusting assembly and the main body assembly is increased by operating the adjusting assembly, then the catheter is placed in the main body assembly, and then the adjusting assembly is loosened to reset the adjusting assembly to clamp the catheter; and then the mounting block is bound on the body of the user through the first connecting belt and the second connecting belt.

An integrated peripheral intravenous (IV) catheter configured for blood draw both at the time of catheter placement and during catheter indwell. The peripheral IV catheter includes a catheter adapter having a catheter configured to be inserted into a patient's vasculature and a side inlet defining a fluid pathway into and out of the catheter. The peripheral IV catheter also includes a side port member having a main branch, the main branch including a distal end configured to couple the side port member to the side inlet of the catheter adapter and a connector portion accessible via a proximal end of the main branch. Additionally, the peripheral IV catheter includes a blood collection adapter removably and directly coupled to the connector portion of the side port member at the proximal end of the main branch. Furthermore, side pore member of the peripheral IV catheter may include a side branch.

Advanced catheter placement systems require disengaging a needle from the guidewire without disturbing a position of the guidewire within the vasculature. Embodiments include withdrawing the needle proximally and drawing the needle over a splitter system that includes a splitter wedge. The splitter system separates the needle along a longitudinal axis. A portion of the guidewire can then pass between a first portion and a second portion of the needle, allowing the needle to disengage the guidewire. A catheter disposed on a proximal portion of the guidewire can then be advanced thereover into the vasculature. A needle safety system can adhere a puncture-resistant adhesive tape to the split portions of the needle. The tape can encapsulate the portions of the needle mitigating any damage or trauma caused by sharpened edges of the needle portions.

The invention relates to a medical device for use in catheter placement, comprising a longitudinal axis, a capillary section extending coaxially to the longitudinal axis between a proximal capillary end and a distal capillary end, and having a flexible design and a capillary outer diameter, a dilator section extending coaxially to the longitudinal axis between a proximal dilator end and a distal dilator end, which axially adjoins the proximal capillary end, and having a dimensionally stable design and a dilator outer diameter that is at least partially larger than the capillary outer diameter, and a lumen extending coaxially to the longitudinal axis through the dilator section and the capillary section between the proximal dilator end and the distal capillary end and is designed to receive a cannula.

The utility model discloses a medical oncology catheter fixator in the technical field of fixators, which comprises a bottom plate and a catheter fixing barrel, a plurality of fitting plates are integrally formed at the edge of the bottom plate, and a spherical block is welded at the upper end of the bottom plate. Rotation limiting installation of the clamping ball body is conducted through the spherical block at the upper end of the bottom plate, the pipe containing groove formed in one side of the spherical block and one side of the clamping ball body facilitates placement of a guide pipe, the upper end of the clamping ball body is connected with the pipe fixing barrel, the pipe fixing barrel and the movably-connected pipe clamping barrel form a circular barrel shape, and the pipe clamping barrel is connected with the clamping block in a matched and clamped mode through the clamping jaw. The pipe fixing barrel and the pipe clamping barrel can rotate in multiple directions in the spherical block through the ball clamping body, the device is suitable for deflection of the guide pipe placement direction at multiple angles, one side of the spherical block is eccentrically connected with the eccentric wheel through the mounting groove, the ball clamping body is stably clamped, and therefore the device can stably fix the guide pipe, and the guide pipe is prevented from shaking and deflecting; the fixing operation is convenient.

A device for interfacing with a syringe body and plunger for delivering a wire includes a needle configured for coupling with the syringe body having a bore for guiding a proximal end of the wire into the workspace. A slide is configured for coupling with the syringe plunger for moving with the syringe plunger between a forward position and a retracted position. The slide is releasably holds a distal end of the wire for advancing the proximal end of the wire forwardly in the needle when the slide moves the syringe plunger from the forward position to the retracted position. A wire advancing mechanism translates the movement of the wire distal end for advancing the proximal end of the wire forwardly as a result of the syringe plunger moving to the retracted position.

The invention relates to a guide wire for a peritoneal dialysis indwelling catheter and an indwelling catheter device, and belongs to the technical field of medical instruments. In order to reduce the probability that the guide wire scratches or punctures the peritoneum, the intestinal tract or the blood vessel in the peritoneal dialysis indwelling catheter operation, improve the operation safety and reduce the operation difficulty, the invention provides the guide wire for the peritoneal dialysis indwelling catheter. The guide wire comprises a body, an expansion piece and an expansion piece, the expansion piece is arranged at one end of the body and provided with an expansion cavity, and the side face, away from the body, of the expansion piece is an arc face. And the expanding piece is connected with the main body and is used for expanding or shrinking the expanding piece. In practical application, the guide wire is matched with the dialysis catheter to realize catheter placement operation. The expansion piece arranged on the guide wire head can change the shape of the guide wire head, increase the contact area of the guide wire head and parts such as peritoneum, intestinal tract or blood vessels in the operation process, buffer the pressure applied to the peritoneum, intestinal tract or blood vessels by the guide wire, reduce the probability that the guide wire scratches or punctures the peritoneum, intestinal tract or blood vessels, improve the operation safety and reduce the operation difficulty.