149 results about "Catheterization device" patented technology

A method and apparatus for analyzing and treating internal tissues and, in particular, tissues affected by myocardial infarct. The apparatus includes a catheterized device integrating an optical probe and treatment delivery system. The probe component includes fiber optic lines that can be used in conjunction with infrared spectroscopy to analyze various characteristics of tissues, including chemical, blood, and oxygen content, in order to locate those tissues associated with myocardial infarct, to determine the best location for applying treatment, and to monitor treatment and its effects. Physically integrated with the probe component is a treatment component for delivering treatments including stem cell and gene therapy, known for having beneficial effects on tissues associated with myocardial infarct. A control system coordinates operation of the catheter, including performing chemometric analysis with the use of model data, and for providing control and visual feedback to an operator.

Catheterization apparatus for implanting devices is provided with a device tether. The apparatus includes a device delivery tube that provides a pathway for moving implant devices through a patient's vasculature to internal body cavities. The implant devices are carried or pushed through the device delivery tube by a tubular push rod. The implant devices are tethered to a line passing through the push rod lumen. After deployment, the implant devices may be retracted into the device delivery tube for repositioning or retrieval by pulling on the tether.

Devices and methods are provided for access to the sub-retinal space that lies between the retina and the choroid in order to introduce therapies to the retina and more specifically to the sensory retina and RPE, particularly in the region of the macula. The devices comprise a catheter that incorporates advantageous size, flexibility and tip features to properly, accurately and atraumatically access the sub-retinal space. Ancillary devices to assist in placing catheters into the sub-retinal space are also provided. The catheter devices incorporate a lumen for delivery of therapeutic substances or devices into the eye.

A catheter insertion device is provided that includes an insertion needle that is retractable into the device after use to prevent exposure to the contaminated needle. The needle retainer releasably retains the needle in an extended position against the bias of the biasing element. When the catheter is removed from the insertion device, the needle retainer automatically releases the needle, which is propelled rearwardly into the device.A device for inserting a guide wire into a patient is also provided. The device includes an insertion needle that is retractable into the housing of the device after use. A needle retainer releasably retains the needle in an extended position against the bias of the biasing element. After the guide wire is inserted into the patient, the needle retainer allows the needle to be released, so that the needle is retracted into the device.

Invention relates to catheter placement devices for peripheral blood vessel catheterization with protected needle tip and shortened length in a transport position (see FIG. 31). In the transport position (FIG. 9), the needle and catheter units (1 and 5) are held inside the handle (8). User transposes the needle and catheter units into a duty ready position (FIG. 6), wherein the needle unit is engaged with the handle distal end and a catheter hub (7) protrudes distally out of the handle. After catheter insertion into patient vein, user disconnects the needle unit and handle allowing the needle unit retraction by a resilient member (11) into the protection position. The trigger and transposing means (22) location enables the apparatus single handed control. The fixation means (31) in the protection position eliminates repeated needle unit advance. It can be used rubber or spiral spring resilient members and the catheter hubs with foldable side wings and side port.

The present invention relates to a catheter insertion apparatus with a needle protective system to protect a user from an inadvertent needle stick. One aspect of the invention provides for withdrawing a contaminated needle into a protected mode within the handle of the catheter apparatus. Another aspect of the invention provides for a frangible coupling link that prevents fixation of the apparatus into the duty ready mode after the needle has entered the protected mode. Another aspect of the invention relates to providing a transport mode whereby the apparatus is in a compact state with the catheter unit and the needle unit positioned inside the hollow handle, thereby reducing the costs associated with packaging and transportation.

An implantable shunt device having a primary catheter and at least two secondary catheters extending from the primary catheter is provided. The primary catheter includes a connecting end, an open end, and an inner lumen extending therebetween. Each of the secondary catheters extend from the connecting end of the primary catheter and include a fluid passageway formed therein in fluid communication with the inner lumen of the primary catheter. Each secondary catheter also includes at least one fluid entry port in fluid communication with the fluid passageway. In an exemplary embodiment, the fluid entry ports are disposed on an inwardly facing portion of each of the secondary catheters. The shunt device can be used for a variety of diagnostic and therapeutic procedures, including for the removal or introduction of fluid to a treatment site.

An intravenous catheter insertion device is disclosed to include a barrel, which has a body and a stop wall, a deformable portion extending from the body, a retainer connected with the deformable portion, and a press portion for pressing by the user to deform the deformable portion. A needle set, which has a cylindrical needle holder, a needle fastened to the needle holder at the front side, a springy stop portion extending from the needle holder, and a retainer connected with the needle holder near the front end of the needle holder. And a spring member, which is mounted around the needle set inside the barrel, and has a first end stopped against the stop wall of the barrel and a rear end stopped against the springy stop portion of the needle set.

An endoluminal catheterization device for providing protection against distal embolization of atherosclerotic debris and thrombi emboli resulting from an endoluminal catheterization procedure. The device is adapted to the new TAVI / PAVI methods to prevent the severe risk of brain embolization and stroke. The embolization protection device may also be an integral part of any other intra-luminal treatment or diagnostic device that may induce embolization, such as a balloon, stent, TAVI or atherectomy.

A catheter insertion device is provided for inserting an over-the-needle catheter. The device includes an insertion needle that is retractable into the housing of the device after use to prevent exposure to the contaminated needle. A needle retainer releasably retains the needle in an extended position against the rearward bias of the biasing element. The needle retainer engages the hub of the catheter so that when the catheter is removed from the insertion device, the needle retainer automatically releases the needle. The biasing element then propels the needle rearwardly into the housing of the device. The device further allows the operator to intervene to delay retraction if desired.

A catheter insertion apparatus with visual indication of needle penetration of a blood vessel and placement of the catheter cannula within the blood vessel, using blood vessel pressure to indicate needle penetration by the presence of blood within a transparent chamber within the apparatus and the displacement of a plunger to create a negative pressure on the cannula and thus allowing blood to be visible within the catheter hub thereby indicating the introduction of the cannula into the blood vessel.

A system improves precision and reliability of intra-cardiac catheter position tracking and monitoring. An interventional system for internal anatomical examination includes a catheterization device for internal anatomical insertion. The catheterization device includes, at least one magnetic field sensor for generating an electrical signal in response to rotational movement of the at least one sensor about an axis through the catheterization device within a magnetic field applied externally to patient anatomy and a signal interface for buffering the electrical signal for further processing. A signal processor processes the buffered electrical signal to derive a signal indicative of angle of rotation of the catheterization device relative to a reference. The angle of rotation is about an axis through the catheterization device. A reproduction device presents a user with data indicating the angle of rotation of the catheterization device.

An insertion apparatus, including an object for insertion into a patient; an insertion structure including an annular mounting structure having a mounting structure interior, the mounting structure containing a resilient membrane barrier extending across the mounting structure interior with a resiliently closing membrane opening for passing the object; so that the object can be inserted forwardly through the membrane opening and into a patient and subsequently withdrawn from the patient and rearwardly from the membrane opening, the membrane opening resiliently closes as the object exits the membrane opening and thereby preventing patient bodily fluid from flowing rearwardly out of the insertion structure.

A device and method yielding a blood analysis employable in combination with an introducer for a catheter for a concurrent testing of blood from the introducer flash chamber during placement of a venous catheter. The device employs a colorimetric blood analysis to provide the user a visually discernable alert to the results of tested blood concurrent with the placement of the catheter with the introducer.

A catheter insertion device with an automatic safety barrier includes a housing, a barrier member, and a biasing element. The housing includes a central bore configured to receive a needle therethrough, and further includes a channel extending through the housing and intersecting the central bore. The barrier member is hingedly coupled to the housing, and includes a leg to extend through the channel. An opening in the leg substantially aligns with the central bore to accommodate the needle therethrough. The biasing element biases the barrier member relative to the housing such that withdrawing the needle through the opening causes the biasing element to misalign the opening with the central bore, thereby occluding the central bore to shield an end of the needle.

The invention relates to a catheter insertion system utilizing a catheter introducer device having an introducer sheath, the catheter insertion system comprise a catheter containment unit in which a catheter tube having a catheter hub is held, said catheter containment unit comprises an opening adapted to sealably and reversibly connect to an inserter head, said inserter head is adapted to sealably and reversibly connect, and provide said catheter tube passage, to said catheter introducer device, wherein said catheter containment unit comprises at least one flexible portion and an elastic / resilient portion located near its opening for advancing portions of said catheter tube through said passage, and wherein said inserter head is adapted to sealably receive a portion of said catheter hub in a socket provided therein.

A catheter insertion device is disclosed herein. The device allows an operator to insert a catheter within a vessel with a single hand enabling the operator to keep a grip on the patient's skin and vessel. The device also includes a needle tip sheath that protects operators from accidental needle punctures by contaminated needles.

Devices and methods are disclosed for a catheterization process, particularly useful for self-performed catheterizations. A catheter is enclosed in a sheath partially attached to the end of the catheter. This leaves an unsealed area at that end leaving the space between the catheter and the sheath in fluid communication with the outside atmosphere. This helps to relieve any pressure built up in that space during use.

A catheter insertion device with an automatic safety barrier includes a housing, a barrier member, and a biasing element. The housing includes a central bore configured to receive a needle therethrough, and further includes a channel extending through the housing and intersecting the central bore. The barrier member is hingedly coupled to the housing, and includes a leg to extend through the channel. An opening in the leg substantially aligns with the central bore to accommodate the needle therethrough. The biasing element biases the barrier member relative to the housing such that withdrawing the needle through the opening causes the biasing element to misalign the opening with the central bore, thereby occluding the central bore to shield an end of the needle.

Devices and methods are provided for access to the sub-retinal space that lies between the retina and the choroid in order to introduce therapies to the retina and more specifically to the sensory retina and RPE, particularly in the region of the macula. The devices comprise a catheter that incorporates advantageous size, flexibility and tip features to properly, accurately and atraumatically access the sub-retinal space. Ancillary devices to assist in placing catheters into the sub-retinal space are also provided. The catheter devices incorporate a lumen for delivery of therapeutic substances or devices into the eye.

Catheterization device and method of using are provided for uniquely illuminating the distal end of the device in order to visualize the end-point location and orientation and to track the movement of the catheterization device within passageways in the body. Use of the present invention by tracking in real time with an imaging device sensitive to visible to near infrared light. The invention allows the insertion and tracking of substantially any catheterization type device, for substantially any procedure requiring vascular access, such as in the placement of a PICC line, for heart catheterization or angioplasty, or for urinary track catheterization, or other bodily access procedure. The invention permits a technician to determine placement, orientation and movement of the device noninvasive equipment, without subjecting the patient to the hazards associated with ionizing radiation, radio frequency energy or significant thermal energy.

The invention provides an automatic urine catheterization device for pressure measurement. The automatic urine catheterization device comprises a urine catheter connector, a Y-shaped tee joint, a urination connector, a pressure measurement connector, a pressure measurement device, and a plurality of sections of pipes for connecting the urine catheter connector, the Y-shaped tee joint, the urination connector, the pressure measurement connector and the pressure measurement device. The automatic urine catheterization device is characterized in that a one-way valve is arranged in the urine catheter connector, a first control valve, a second control valve and an electromagnetic valve are arranged on near Y-shaped tee joint, the pressure measurement connector is internally provided with a hydrophobic membrane allowing gas to pass through and preventing tissue liquid to pass through, and a liquid measurement device is arranged on the lower end of the pressure measurement connector. The automatic urine catheterization device has the advantages that the urine catheterization device is matched with a urine catheter commonly used clinically, so that the automatic control on urination is realized, and the trouble of artificial nursing on urination is avoided; the one-way valve can effectively prevent the back flowing of urine, so that the urinary tract infection caused by the back flowing of urine is avoided; and the hydrophobic membrane can effectively prevent the urine from flowing back to a pressure sensor.

A needle is provided that can be used for introducing or aspirating fluids to a patient or as an introducer needle for positioning and inserting a catheter, such as a peripheral IV catheter into a patient. The needle can be an introducer needle that extends from the distal end of the catheter during insertion. The needle has an insertion tip with a configuration to assist penetration into a vein with a reduced incidence of injuring the inner surface of the vein or inadvertently passing through side wall of the vein. The needle tip can be farmed with a curved distal end surface where the pointed tip is spaced radially inward relative to the outer surface of the needle. In another embodiment the needle tip can have a reverse beveled surface having an axial length, angle, and curvature to assist in penetrating the vein with a reduced incidence of transfixing the vein.