80 results about "Catheterise" patented technology

An extravascular system is provided which includes a catheter adapter having a blood control septum configured to control flow of a fluid through the catheter adapter, the catheter adapter further having a catheter configured for intravenous insertion. The extravascular system further includes a septum activator slidably inserted within the catheter adapter and configured for advancement through the blood control septum to provide a fluid pathway through the blood control septum. Further still, the extravascular system includes an external safety mechanism comprising a needle hub and a needle shield interconnected via a tether, wherein the needle shield includes a safety clip that is configured to retain a sharpened end of the introducer needle within the needle shield. Some implementations further comprise an access port forming a portion of the catheter adapter and providing selective access to the lumen of the catheter adapter.

An anchor and procedure for placing a medical implant, such as for monitoring physiological parameters. The anchor includes a central body in which a medical implant can be received. arms and members extend radially from first and second ends, respectively, of the central body. Each member defines a leg extending toward distal portions of the arms to provide a clamping action. The anchor and its implant are placed by coupling first and second guidewires to first and second portions of the anchor, placing an end of a delivery catheter in a wall where implantation is desired, inserting the anchor in the catheter with the guidewires to locate the anchor within the wall, deploying the arms of the anchor at one side of the wall followed by deployment of the members at the opposite side of the wall, and thereafter decoupling the guidewires from the anchor.

A catheter tunneling assembly (100) used to tunnel a distal end of a multilumen catheter assembly (200) through a subcutaneous tunnel prior to inserting the catheter assembly into a patient. Adapter (130) facilitates connection of a trocar (110) with the catheter assembly and provides a smooth transition. The adapter has an inner member (130) that is affixed to the proximal end (114) of the trocar (110) and includes a proximal projection (134) that coextends along a distal portion of the catheter assembly (200); and an outer member (160) that is slidable from distally of the inner member to surround the proximal trocar end, the inner member (130) and a distal portion of the catheter assembly (200) pressing the proximal projection (134) of the inner member (130) into frictional engagement with a catheter portion. A method includes providing a tunneler assembly having a body (100,130) with a first and second extensions (126,134), and a slider (160); inserting the first extension into a catheter lumen; and sliding the slider (160) along the body toward the catheter to surround the tunneler assembly body and catheter end and bias the second extension (134) toward the first extension (126) to frictionally engage the catheter portion therebetween.

Light from a small laser diode is inserted in a distal end of a catheter and passed through an optical fiber that is either included in the lumen or incorporated into the wall of an invasive catheter tube during manufacture. The light is selected to be of a wavelength that is minimally absorbed by tissue, preferably in the range from about 620 nm to 1100 nm. 780 nm is preferably used as this is where the tissue absorption is near a minimum. The light passes out the end of the fiber (at the proximal end of the catheter) and through the tissue to the outside of the patient's skin where it is measured. The light pattern is observed by night vision goggles that filter out other frequencies of light. The detected light permits location of the end of the fiber, the positional accuracy depending on the thickness of tissue between the fiber tip and the exterior of the body. The method is highly accurate for small children and for catheters within a few centimeters of the skin surface of adults.

to protect against accidental needle prick a catheter and insertion device are provided wherein the needle is retractable within the device after insertion of the catheter. The device comprises a hollow barrel or tube of semi-rigid plastic material into which the needle can be retracted after use. The barrel includes a resealable closure at the insertion that opens to allow passage of the needle and catheter and closes to reseal the barrel when the needle is retracted. A cap is provided that covers the barrel to further seal the device after use.

Systems, methods, and articles for providing an antimicrobial composition to the proximal elements of a trans-dermal catheter and into the lumen of the transdermal catheter are disclosed. In an embodiment, an antimicrobial composition on surface a cap element transfers antimicrobial to the proximal end of the transdermal catheter. The system comprises an elongate member configured for insertion into a lumen of a catheter, the elongate member containing an antimicrobial.

The present invention is a catheter having a tube and including mechanisms that provide precision control over insertion and retraction of the catheter tube. The catheter is particularly adapted for introduction into the pulmonary system. The catheter includes an insertion depth control mechanism that acts as a stop and provides a tactile indication to the person inserting the catheter tube that a predetermined position has been reached. The catheter also includes an anti-bunching mechanism to prevent bunching of a protective sleeve disposed around the catheter tube, thereby reducing interference from the sleeve during insertion of the catheter tube.

A method for inserting a multiple catheter assembly into a patient. The assembly (100) includes a first catheter (110) having a first distal end region (114) and an outer surface (120) defining at least a first lumen (122). A second catheter (130) has a second distal end region (134) and a second outer surface (140) defining at least a second lumen (142) The outer surfaces (120,140) of the first and second catheters are releasably joined by a splittable bond (180) for allowing the first and second distal tips (116,136) to be at least partially longitudinally split from each other. The method includes the steps of separating the first and second distal end regions, and inserting the first and second distal end regions in juxtaposed relation to each other through the incision and into the area to be catheterized.

A loading device for facilitating the loading of a guidewire into a lumen defined by a catheter. A catheter may have a shaft extending from a proximal end to a distal end, defining one or more lumens having one or more catheter ports. A guidewire has a flexible wire-like structure extending from a proximal end to a distal end. The guidewire loading device defines a passage having a first and second loading port. A portion of a catheter may be partially inserted into one of the loading ports, such that a catheter port communicates with the loading device passage. Then, one of the guidewire ends may be inserted into the other loading port. The guidewire may be more easily inserted through the loading device passage, into the catheter port, and thus into the catheter lumen.

The present invention is flow rate meters which are able to accurately measure the volumetric rate of flow of a liquid through a conduit without requiring foreknowledge of the physicochemical characteristics of the liquid, e.g., for the purpose of calibration of the thermal mass flow rate. One application of the flow meters of the invention is to incorporate them in a system for measuring the flow rate of urine excreted by a catheterized patient. The invention also provides methods for using the flow rate meters.

Apparatus for directed cranial access to a site includes a guidepiece and a receptacle. The receptacle includes a lower part having a rim and a base, and a hollow stem at the base adapted to be mounted in a hole in the skull; and an upper part having a rim and an opening at the top. Each part of the receptacle has an interior spherical surface, and they can be joined at the rims to form an inner surface enclosing a spherical interior. The guidepiece includes a body having a spherical outer surface and a cylindrical bore through the center, defining an alignment axis; and a guide tube in the bore. The guidepiece is dimensioned to fit rotatably within the receptacle interior, and the apparatus is assembled by joining the receptacle over the guidepiece body, with the guide tube projecting through the top opening. The guide tube is dimensioned to accept an imaging device such as an ultrasound probe during an imaging stage, and an adaptor is provided, dimensioned to accept a device to be placed at the site during a placement stage. The probe is inserted into the guide tube and the guidepiece is swiveled until the image shows that the alignment axis is aligned along an optimal trajectory to the site, the receptacle is tightened to lock the guidepiece, and the imaging device is withdrawn. Then the adaptor is inserted into the guide tube, and the device is inserted through the adaptor along the established trajectory to the site. After placement of the device into the intracranial target, the adaptor, guidepiece, and receptacle are removed as a unit over the device while the device is held in place.

A medical device assembly is provided for removable insertion into a catheter with a lumen. The medical device assembly comprises an electromagnetic radiation (EMR) source for providing non-ultraviolet, therapeutic EMR having an intensity sufficient to inactivate one or more infectious agents and / or to stimulate healthy cell growth causing a healing effect, and a removable EMR conduction system at least partially insertable into and removable from the lumen of the catheter. The EMR conduction system has at least one optical element providing axial propagation of the therapeutic EMR through an insertable elongate body. The elongate body may have an exterior surface between a coupling end and a distal end tip that has at least one modified portion permitting the radial emission of therapeutic EMR from the elongate body proximate the modified portion. Such modified portion may be gradient along the exterior surface.

The invention discloses an intravascular thrombus suction catheter device and a mesh basket assembly thereof, and belongs to the field of vascular intervention medical treatment. The device comprisesa three-way connecting base, a catheter, a connecting base and a conveying sheath tube, and further comprises an expandable guide head end and a self-expansion mesh basket assembly. The self-expansionmesh basket assembly consists of a mesh basket conveying pipe, a hammer-like guide cap, a mesh basket supporting pipe and a self-expansion mesh basket, wherein the mesh basket conveying pipe is inserted into the catheter, the hollow hammer-like guide cap is arranged at the far end of the mesh basket conveying pipe, the mesh basket supporting pipe is inserted into the mesh basket conveying pipe, and the self-expansion mesh basket is fixed to the far end of the mesh basket supporting pipe. The hammer-like guide cap serving as a thrombus breaking separator is arranged at the suction opening in the head end of the far side of the catheter and used for breaking and separating thrombus blocked at the suction opening of the suction catheter; and the self-expanding mesh basket is arranged at thefar end of the lesion thrombus and used for scraping and collecting thrombus tissue attached to the wall of a blood vessel, and besides, the collected thrombus tissue is pushed to the position near the suction opening in the near end of the suction catheter.

Systems and methods suitable for decreasing catheter-associated bacteriuria in a catheterized patient include a urinary collection system having a collection bag, a drain tube fluidically connected to the collection bag to enable emptying urine collected in the collection bag, and a flexible continuous tube formed as an integral one-piece component and fluidically connected to the collection bag to enable urine to flow into the collection bag from a patient's bladder. Catheter-associated bacteriuria may be decreased in the system by instilling a sterile acetic acid solution into the collection bag via the continuous tube, dispersing the solution in the collection bag, draining the solution from the collection bag via the drain tube, and then allowing urine to flow from the catheterized patient through the continuous tube and into the collection bag.

A therapeutic or diagnostic instrument includes first and second shaped wire members and that can be simultaneously inserted into a catheter tube and has predetermined bending elasticity, in which the first and second shaped wire members and are adapted to respectively have first and second curving parts that curve in a natural state, and when inserted into the catheter tube, curve the catheter tube at two desired positions correspondingly with the first and second curving parts.

In one embodiment, a verification system for confirming the position of a conduit inserted within a patient may include an elongate control element dimensioned for insertion within the conduit. The control element has a proximal end and a distal end, and a verification element coupled to a distal region. The verification element may be configured to detect the presence of a reference marker associated with the conduit and communicate a signal indicative of the position of the reference marker relative to the verification element. The control element may also be configured to maneuver the verification element along a length of the conduit. The system may also include a drive device coupled to a proximal region of the control element for controlling movement of the control element through the conduit, a controller associated with the verification element and configured to communicate with the verification element, and a signal conductor for conducting the signal between the verification element and the controller.

An insulin infusion system is provided with a manual insertion device having a dual retraction spring (230) configuration for automatic introducer needle (222) retraction. A button (200) of the insertion device is used to insert the introducer needle (222) and catheter (202), and once the introducer needle (222) and catheter (202) have been fully inserted, a rotating engagement releases the dual retraction springs (230) such that the introducer needle (222) automatically retracts, leaving the catheter (202) in the body of the user. An end of the introducer needle (222) remains in the inserted catheter (202) and / or in the septum (206) of the inserted catheter (202) to provide an uninterrupted fluid path.

The invention discloses an epidural puncture needle insertion device for a department of anesthesiology. The epidural puncture needle insertion device comprises a fixed plate, wherein the two ends ofthe top surface of the fixed plate are fixedly connected with the same handheld U-shaped handle, a pusher bar motor is fixedly mounted on the top surface of the fixed plate, a telescopic end of the pusher bar motor penetrates through the fixed plate in a sliding manner and is fixedly connected with a needle insertion shell, both ends of the bottom surface of the fixed plate are fixedly connected with two fixed rods, compression springs sleeve the fixed rods in a sliding manner, two driving plates are mounted on the two fixed rods in a sliding penetrating manner, and the other end of each of the two driving plates is fixedly connected with the sidewall of the needle insertion shell. According to the epidural puncture needle insertion device, the handheld U-shaped handle is held by a hand, then, a sucker is sucked to skin, and then, a needle insertion region is determined, so that the stability of a puncture needle can be guaranteed, and the aching feeling of a sufferer can be reduced; and when an airbag is deflated, needle insertion is stopped, and a catheter is inserted into the puncture needle, so that a puncture result is convenient to monitor, and whether puncture is successfulor not can be known rapidly.

A gas liquid separator adapted to be inserted into a conduit is disclosed. The gas-liquid separator includes downward sloping vanes and optionally, one or more return channels. The vanes may have an opening along the length thereof, and a bottom lip to channel accumulated liquid to the conduit wall or to sloped return channels. If the conduit is not sloped such that the captured droplets are returned to the originating vessel, sloped return channel / channels are used to return the captured droplets to the vessel from which the gas stream originated. With a central return channel, the vanes can be attached directly to the channel with the resulting assembly having a fishbone shape. When a central return channel is not used, the vanes can be attached to a central plate or spine with the resulting spine-vanes assembly again having a fishbone shape. The separation enhancers can be used in a variety of conduit configurations. Furthermore, a plurality of separation enhancers can be utilized in an exhaust gas conduit to increase the removal efficiency.

A system for use in treating a tissue site, e.g., a site exhibiting or at risk for developing compartment syndrome, the system including a monitor for use in controlling the function and operation of one or more apparatuses providing insertable catheters. The system includes at least one apparatus having a catheter portion that includes both a suitably protected, functional device tip, adapted to be positioned and used within the tissue site, and one or more hollow fiber membranes, e.g., an array of such membranes, adapted to be positioned within the tissue site in order to simultaneously collect fluid therefrom. The catheter portion is adapted to be safely inserted and positioned within the tissue site, in a manner that permits it to function there while substantially minimizing direct impingement of the non-fluid tissue on the functional device tip surface.

An in-line sampling syringe for selectively introducing and aspirating a fluid from a downstream fluid conduit connected to a catheterized patient. The syringe includes a housing with a distal component defining a distal chamber having a proximal opening and a distal outlet port to be coupled to a downstream fluid conduit; and a pair of proximal wall components assembled together in an airtight manner defining a proximal chamber having a proximal opening for coupling to an external source of fluid and a distal opening that is coupled to the proximal opening of the distal component. The syringe also includes an elongated volume regulator positioned inside the housing. A curved element is positioned at and in alignment with the distal outlet and retention elements are defined in the distal component at the distal outlet port to mount and retain the curved element at the distal outlet port while enabling flow around the curved element relative to the distal outlet port. A conduit extends from the proximal opening of the proximal chamber through the elongated volume regulator to the curved element at the distal outlet port.

The invention discloses a large-channel and direct-inserting endoscope. The large-channel and direct-inserting endoscope comprises an inserting part and an operating part, wherein the inserting part comprises an inserting catheter and a tip head part fixed at the front end of the inserting catheter; the operating part is connected to the tail end of the inserting part and comprises a handle and ahandgrip forming a certain angle with the handle; an instrument inlet is formed in the rear end surface of the handle of the operating part, an instrument catheter penetrates in the handle and an inner cavity of the inserting catheter, and an acute included angle between a section axis of the instrument inlet and a section axis of the instrument catheter in the handle is smaller than 15 degrees. According to the large-channel and direct-inserting endoscope, an optical fiber is not required to bend when extending into the instrument channel from the instrument inlet, so that optical fiber damage is effectively prevented; meanwhile, the inner diameter of the instrument catheter is increased, two or more instruments can be allowed to be inserted into the instrument catheter simultaneously foroperation, the surgical time is shortened, the surgical efficiency is improved, and the large-channel and direct-inserting endoscope has quite high practical value.

A system and method by which a catheter tube may be automatically driven to a target location within the body of a subject, such as an enteral cavity or respiratory tract of the subject. The catheter tube may include an imaging device, a transceiver, a spectrometer, and a battery embedded in a tube wall at a distal end of the catheter tube. The imaging device may capture image data of structures proximal to the distal end of the catheter tube. An articulated stylet may be inserted in the catheter tube, which may be controlled by a robotic control engine according to navigation data generated by an artificial intelligence (AI) model based on the topographical image data. The spectrometer may sample and identify biomarkers proximal to the catheter tube. A remote computer may implement the robotic control engine and AI model and may wirelessly receive the image data from the transceiver.

An IV access device can include a needle hub that incorporates a flash chamber. The flash chamber can be used to provide visual confirmation of proper catheter placement within a vein. The flash chamber can include a path-defining structure to facilitate identifying whether blood is continually flowing into the flash chamber. The flash chamber may also be removable from the needle hub. In some cases, the needle hub may include a paddle grip that facilitates insertion of the catheter and separation of the needle hub from the catheter adapter.

A medical device assembly is provided for removable insertion into a catheter with a lumen. The medical device assembly comprises an electromagnetic radiation (EMR) source for providing non-ultraviolet, therapeutic EMR having an intensity sufficient to inactivate one or more infectious agents and / or to stimulate healthy cell growth causing a healing effect, and a removable EMR conduction system at least partially insertable into and removable from the lumen of the catheter. The EMR conduction system has at least one optical element providing axial propagation of the therapeutic EMR through an insertable elongate body. The elongate body may have an exterior surface between a coupling end and a distal end tip that has at least one modified portion permitting the radial emission of therapeutic EMR from the elongate body proximate the modified portion. Such modified portion may be gradient along the exterior surface.

A postpartum balloon system includes a flexible elongate catheter, an inflatable balloon, and a suction member attached to the distal end of the catheter. The system can be delivered into the uterus, where suction is applied to the suction member to anchor the balloon to the internal wall of the uterus. The catheter may include drainage ports both proximal and distal from the balloon. The system may include a stiffening stylet inserted into the drainage lumen of the catheter for aiding in delivery of the balloon. The stiffening stylet can be removed after placement of the balloon. The stiffening stylet can include side passageways that match the drainage ports and a lumen that allows for drainage through the stylet, as well as for administering drugs or other compounds through the drainage ports while the balloon is in place.

A method for measuring hemodynamics of an experimental animal enabling repeated measurements, the method comprising the following steps:(i) ligating at least two parts of an artery, between which a part to be incised is located, of the experimental animal, the parts comprising at least one proximal ligated part and at least one distal ligated part, and then incising a part between the ligated parts;(ii) inserting through the incised part a blood pressure-volume simultaneously measuring catheter provided with multiple conductance electrodes and at least one pressure sensor;(iii) loosening the distal ligated part so as to allow an insertion of the catheter and not to cause bleeding in the opened part;(iv) further inserting the catheter so as to introduce the multiple conductance electrodes and the pressure sensor(s) into the heart ventricle; and(v) simultaneously measuring pressure and volume of the heart.