88 results about "Catheterise" patented technology

Provided is an extension catheter excellent in strength for fixing a linear member to a cylindrical member. The extension catheter according to the present invention is inserted into a catheter and can be protruded from an opening on a distal side of the catheter. The extension catheter comprises a cylindrical member and a linear member with a distal end portion thereof fixed to the cylindrical member. The cylindrical member comprises an inner layer containing a fluororesin and a proximal end portion located closer to a proximal side than a proximal end of the inner layer. The linear member is fixed to the cylindrical member at least inside the proximal end portion.

The utility model relates to the technical field of bipolar electrodes, and discloses a bipolar electrode for transnasal skull base surgery, which comprises a holding rod, the front surface of the holding rod is fixedly connected with an insertion catheter, the front end of the outer surface of the insertion catheter is fixedly connected with a suction sleeve, and the inner surface of the suction sleeve is movably connected with a first transmission tube. One end of the first transmission pipe is fixedly connected with a suction pump, an electrode plate is arranged at the front end of the insertion catheter, the electrode plate is controlled through linkage of the pressure sensor and the air cylinder, and when the pressing adjusting block is pinched and touches the pressure sensor, the telescopic rod can be rapidly made to move, so that the electrode plate is controlled to be opened or closed. By means of the control, a doctor can more accurately control the tip end of the electrode plate, the risk that surrounding tissue is accidentally touched or accidentally injured is reduced, the situation that the surgical field is shielded by accumulated hydrops is avoided by removing the hydrops, the doctor can more clearly observe the surgical site, and the possibility of misoperation is reduced.

The conduit carrier includes a carrier housing that includes first and second contact ends and a vacuum channel extending between them. The vacuum channel is configured to connect to a vacuum source via the first contact end. An engagement mechanism is connected to the second contact end. The engagement mechanism is configured to engage with the conduit in a releasable manner during nerve repair surgery. A separator is configured to extend from the second contact end. When the engagement mechanism engages with the conduit during nerve repair surgery, the vacuum channel is connected to a vacuum port in the conduit via the second contact end so that a vacuum source can draw a vacuum into the conduit, and the separator extends into the conduit through the vacuum port, creating a predetermined regeneration gap between the first and second nerve stumps inserted into the conduit.

A device for inserting a catheter according to a disclosed embodiment comprises: a needle including a needle body extending in a first direction, a tip forming a distal end in the first direction, and a pair of edge portions which meet each other at an acute angle at the tip, have widths increasing in both directions perpendicular to the first direction toward a second direction opposite to the first direction, and form sharp edges so that the skin of a patient can be incised in the both directions; and a sheath having a guide hole extending in the first direction therein so that a catheter can be inserted, wherein the needle body is disposed through the guide hole so that the tip and the edge portions of the needle are positioned in the first direction of the guide hole, and the outer diameter of the distal end in the first direction is greater than the maximum width of the pair of edge portions in both directions.

A shunt insertion system comprises a positioning assembly, a driving assembly coupled with the positioning assembly, and a mounting assembly coupled with the driving assembly for the insertion of a catheter. The driving assembly is configured to drive a mounting assembly. The mounting assembly comprises a sensor configured to sense resistance and generate sensor data indicating the resistance.

Provided is an extension catheter easy to insert into a tube inside a body. This extension catheter is inserted into a catheter and can protrude from a distal-side opening of the catheter. The extension catheter comprises a tubular member and a linear member having a distal end portion fixed to the tubular member. The tubular member includes a first resin having a portion located outside of the linear member in the radial direction and a second resin having a lower Shore D hardness than the first resin. A cross section of the tubular member in the radial direction has three regions obtained by equally dividing the tubular member in a direction passing through the centroid of the linear member and the centroid of the lumen of the tubular member, and designated as a first region, a second region, and a third region in order of increasing distance from the linear member. The first resin is positioned in the first region or in the first region and the second region, and the second resin is positioned at least in the third region. The first resin has a first exposed surface exposed on the outer surface of the tubular member.

The present solution provides a system and method for transround window membrane drug delivery. In summary, the system includes a micropump connected to a flexible cannula. The cannula can be threaded through a handpiece that can be used to pierce a patient's round window membrane. The handpiece allows the cannula to be inserted into the round window membrane, improving distribution of the delivered drug throughout the inner ear. The present solution can function as a small, implantable or wearable device that can be used for chronic and acute transround window membrane drug delivery. This configuration allows the micropump to deliver small amounts of drug from an internal reservoir continuously or intermittently over a period of days to months.

The invention is entitled "Breath control during cardiac ablation." The invention discloses a method for invasive cardiac treatment, the method comprising inserting a catheter into a beating heart of a patient who is anesthetically paralyzed and intubated for ventilation via a transvascular path, and temporarily stopping ventilation of the patient after the catheter is inserted. The method comprises moving the catheter between a plurality of locations of myocardial tissue of the heart with the ventilation stopped, and ablating the myocardial tissue of the heart at the plurality of locations with the ventilation stopped.

A neurovascular catheter for delivery through an aorta and into an ostium can include a tubular body between a proximal end to a distal end. The tubular body can have a length of 140 cm to 180 cm, a 5Fr size, and an internal diameter of about 0.065" to about 0.067". The tubular body can include a proximal portion and a distal portion. The distal portion can include a polymer layer and a layer of braids. The proximal portion can include a hypotube and the layer of braids.

The intravascular ultrasonic navigation device in infusion port implantation and extraction and the working method can assist a doctor in monitoring the delivery position of a catheter tip in real time during infusion port implantation and evaluating the conditions in an indwelling vein and around the catheter tip in real time during infusion port extraction. A male seat interface (31) and a Y-shaped connector (32) are arranged at the two ends of the disposable sterile ultrasonic interface connecting line respectively, the male seat interface is connected with a portable ultrasonic imager, the Y-shaped connector comprises an 18-channel signal male seat (321) arranged on the periphery of an operation head end and matched with a tubular cable in a catheter wall, a catheter male seat with a hollow pointed end is arranged in the center of the operation head end, and the catheter male seat is matched with a catheter tail end cavity. The supporting guide wire is adaptively inserted into the catheter male seat tube cavity; the operation tail end is provided with a 18-channel cable (322) which is internally connected with a male socket interface; the branch end is a Raulerson spring guide wire injector female seat interface (323), a tube cavity extends from a hollow catheter male seat tube cavity at the running head end, and a support guide wire is led out from the catheter.

The application relates to an auxiliary device for medical catheter gluing, and relates to the technical field of medical product assembly. The device comprises a synchronous transmission mechanism and a synchronous gluing mechanism. A gluing hole is arranged on a gluing seat. A sliding rod is arranged in a gluing shaft in a sliding mode. A sealing head is arranged on the sliding rod. A first elastic element is arranged in the gluing shaft and used for providing a pre-tightening force of the sealing head tending to block the gluing hole. A sealing mechanism is arranged on a glue box. The sealing mechanism comprises a fixing sleeve, a supporting seat, a clamping block and a driving assembly. The application realizes initial blocking of the gluing hole through the abutting of the slidable sealing head and the gluing hole. When the catheter is inserted, the sealing head is pushed to slide and the gluing hole is opened. When the catheter is not inserted, the position of the sealing head in the gluing hole is unchanged. Meanwhile, the clamping block is driven by the driving assembly to be closed to clamp and seal the outer wall of the catheter body, so that the technical effects of automatic leakage prevention when the catheter is not inserted and no damage to the glue layer when the catheter is withdrawn are achieved, and the gluing quality and production efficiency are provided.

A catheter system may include a catheter adapter and a wing extending outwardly from the catheter adapter. The wing may include a groove or slot. The catheter system may include a needle hub and a paddle extending outwardly from the needle hub. The paddle may include an extension disposed within the groove or the slot to reduce axial movement between the catheter adapter and the needle hub, which may be advantageous during insertion of the catheter system into a patient. The extension may be removable from the groove or the slot to allow axial movement between the catheter adapter and the needle hub during removal of the needle hub from the catheter adapter, for example. The paddle and / or the wing may include a shape to reduce axial movement between the catheter adapter and the needle hub, which may also be advantageous during insertion of the catheter system.

This is a hypotube probe comprising a main body, a curved tip, a stylet, and an electrode. The main body is configured to be placed in the patient's subdural space and has a curved tip at its anterior end. This tip is configured to be inserted at an angle to the subdural space in order to advance the main body to the target site within the subdural space. The stylet is configured to enter the channel and, after being inserted into the channel, advance to the distal opening and seal the distal opening. The electrode is configured to be inserted into the channel and then advance through the distal opening for placement in contact with the dural tissue within the subdural space.

Provided is an extension catheter having a tubular portion thereof that is unlikely to be deformed into a distorted shape even when inserted into a curved portion inside a body. The extension catheter can be inserted into a catheter and protrude from a distal-side opening of the catheter, the extension catheter having a tubular member and a linear member having a distal end thereof fixed to the tubular member. The tubular member has a tubular portion and a tapered portion located more on the proximal-side than the tubular portion. The tubular member has a braided tube at least in the tubular portion. An opening-containing surface of the braided tube that includes a proximal-side opening is inclined. A proximal end of the opening-containing surface is closer to the linear member than a distal end of the opening-containing surface in the radial direction of the braided tube.

A. catheter insertion device includes a housing, a button including a body and at least one arm extending from the body into the housing to movably couple the button to the housing, the button is movable between a raised position and a depressed position, and a needle hub coupled to the button to move with the button between the raised position and the depressed position. In the raised position, the body of the button is a first distance from the needle hub that reduces visibility of the needle hub through the body of the button. In the depressed position, the body of the button is a second distance from the needle hub less than a first distance that allows visibility of the needle hub through the body of the button.

Disclosed is a thrombus extraction device (1) comprising: a rotating body (2) formed by a plurality of first longitudinal struts (20), wherein the first longitudinal struts (20) are fixed only at a proximal end (21) and a distal end (22), and the rotating body (2) is in an expanded configuration when the rotating body is in a free state, and is in a contracted configuration when the rotating body is inserted into a catheter; a distal body (3) connected to the distal end (22) of the rotating body (2), the distal body is in an expanded configuration when the distal body is in a free state, and is in a contracted configuration when the distal body is inserted into a catheter; wherein at least a portion of each first longitudinal strut (20) is radially expanded and circumferentially rotated during the unfolding stage of the rotating body (2) from the contracted configuration to the expanded configuration.

Integrated IV catheters can have a side port that facilities drawing blood. The side port provides separate fluid pathways for drawing blood and for injecting fluids via an extension set. The side port can be configured to allow the extension set to be primed while a blood sample is collected. In this way, the collection of a blood sample at the time of catheter insertion is facilitated.

The invention relates to an auxiliary device for medical catheter gluing, and relates to the technical field of medical product assembly.The device comprises a synchronous transmission mechanism and a synchronous gluing mechanism, a gluing hole is formed in a gluing seat, a sliding rod is arranged in a gluing shaft in a sliding mode, and a sealing head is arranged on the sliding rod; a first elastic element used for providing pretightening force for the sealing head to close the gluing hole is arranged in the gluing shaft, a sealing mechanism is arranged on the glue solution box, and the sealing mechanism comprises a fixing sleeve, a supporting seat, a clamping block and a driving assembly. The sealing head capable of sliding abuts against the gluing hole to achieve initial plugging of the gluing hole, when the guide pipe is inserted, the sealing head is pushed to slide and open the gluing hole, the position of the sealing head in the gluing hole where the guide pipe is not inserted is not changed, and meanwhile the driving assembly drives the clamping block to be closed to clamp and seal the outer wall of the guide pipe body. Therefore, the technical effects of automatic leakage prevention when the guide pipe is not inserted and no damage to the glue layer when the guide pipe is withdrawn are achieved, and the gluing quality and the production efficiency are improved.

Provided is an extension catheter that can be inserted into a catheter and protrude from an opening at the distal end of the catheter, is less likely to become kinked, and can even prevent kickback of the catheter to be used when the extension catheter is inserted.　The extension catheter has: a cylindrical member that has a lumen extending in the longitudinal axis direction and has a proximal-side opening and a distal-side opening; and a linear member that is fixed to the cylindrical member and extends further to the proximal side than the cylindrical member. The cylindrical member has a large-diameter segment, a proximal-side small-diameter segment on the proximal side of the large-diameter segment, and a distal-side small-diameter segment on the distal side of the large-diameter segment with respect to the longitudinal axis direction. A braided tube is disposed on the outside in the radial direction of the cylindrical member on at least a portion of the proximal-side small-diameter segment and on at least a portion of the large-diameter segment of the cylindrical member. In a vertical cross-section in the longitudinal axis direction of the cylindrical member, the diameter of an inscribed circle with respect to the outer edges of the proximal-side small-diameter segment and the distal-side small-diameter segment of the cylindrical member is smaller than the diameter of an inscribed circle with respect to the outer edge of the large-diameter segment of the cylindrical member.

Provided is an extension catheter easy to insert into a curved part inside a body. This extension catheter is inserted into a catheter and can protrude from a distal-side opening of the catheter. The extension catheter comprises a cylindrical member and a linear member having a distal end portion fixed to the cylindrical member. The linear member has, on a side surface thereof, a first cut surface facing outward in the radial direction of the cylindrical member.

The invention relates to an insertion catheter system for inserting and positioning a heart valve stent into the body of a patient, wherein the stent comprises a main body having a proximal end region and an opposite distal end region and at least two fastening / anchoring / compartmentalizing / positioning arches which are fastened to the main body and which, in the compressed form of the stent, are oriented cranially in the direction of the distal end region of the main body and, in the expanded form of the stent, are oriented caudally in the direction of the proximal end region of the main body. The insertion catheter system has a handle, which is provided at the distal end of the catheter system and with which the catheter tip can be manipulated. According to the invention, it is provided in particular that the handle has actuating means which interact with the catheter tip in such a way that, upon actuation of the actuating means, the at least two fastening / anchoring / compartmentalizing / positioning arches of the stent can be successively released in steps from the catheter tip after a predefined or predefinable sequence of events.

The present application relates to a kind of ultrasonic imaging system and ultrasonic imaging catheter assembly, ultrasonic imaging catheter assembly includes: imaging catheter, catheter socket and catheter terminal.Catheter terminal is equipped with electric connection part, and electric connection part is electrically connected with radio frequency terminal by plug-in manner.When assembling, imaging catheter and catheter socket are mutually plugged, and unlocking piece can drive first clamping part to open to loosen core;In addition, catheter terminal is inserted along the axial direction to make catheter terminal and core clamping connection, and electric connection part and radio frequency terminal in the core interior are electrically connected by plug-in manner.In addition, catheter terminal can drive core to retract along the axial direction and / or circumferential direction arbitrary angle self-rotation, can realize to obtain the image information of full range of intravascular wall.Relative to the assembly mode of prior art, overall structure is simpler, can improve work efficiency, while reducing production assembly cost, production assembly process is simple, production assembly process is stable, conducive to mass production.

When conducting technical training and evaluation for endovascular surgery, the behavior of the catheter, particularly the movement of the wire inside the catheter sheath, can be observed more clearly without the use of X-rays. [Solution] An apparatus for observing a vascular model into which a catheter has been inserted, wherein the light-emitting unit comprises a light source and a polarizing element and irradiates a reference irradiation light containing a first polarization toward the object to be observed, the polarizing element has a polarization axis in a first direction and transmits the first polarization that is circularly polarized in the first direction from the light output from the light source, the first polarization is transmitted through the catheter sheath and at least a part of its light component has its polarization state modulated, the light-receiving unit comprises a photodetector and an analyzer, the analyzer has a polarization axis that constitutes circular polarization in a second direction different from the first direction, the photodetector receives the light component of circular polarization in the second direction that has passed through the analyzer from the reference irradiation light that has been irradiated toward the object to be observed and interfered with by the object to be observed, and generates an observation output, the image generation unit receives the observation output and generates an image, and the display displays the image.

Provided is a medical instrument according to which, even when an optical fiber is inserted into a catheter, it is possible to secure enough space inside the catheter .　A medical instrument 1 includes: a catheter 10 to be inserted into a living body; and an optical fiber 20 which is inserted into the catheter 10 and emits light for indicating a tip part of the catheter 10. The optical fiber 20 is made of quartz glass and has an outer diameter dimension D of 200 μm or less.

A catheter insertion device (10) is provided for positioning and inserting a catheter (14), particularly a midline catheter into a patient. The insertion device (10) includes an introducer needle (18) that extends from the distal end of the catheter during insertion. A manually operated actuator assembly (20) is movable with respect to a housing for deploying the catheter (14) over the distal end of the introducer needle (18). A step-wise movement of the actuator (20) advances the catheter (14) in stages over the introducer needle (18). A shuttling or indexing mechanism (60, 76) advances the catheter and prevents retraction of the catheter once deployed.

A robotic surgical method for repair of an infrarenal aortic aneurysm with an aneurysm sac in an aorta of a patient includes introducing at least one arm and a camera of a robotic surgical system into designated ports of the patient. Then, a graft is attached to a proximal wall of the aorta. The aneurysm sac is decompressed by inflating an intravascular balloon and initiating flow in an arteriovenous circuit. Anterior posterior walls of the aneurysm sac are stapled and the robotic incisions are closed. A method for inserting a conduit includes deploying an intimal umbrella, partially expanding an expandable graft, deploying an adventitial umbrella, and fully inflating the expandable stent.

The anti-infection protection device for the cardiovascular interventional operation comprises a catheter sheath and a protection base, the upper surface of the protection base is fixedly connected with a first disinfection box, the inner wall of the first disinfection box is fixedly connected with a supporting block, the surface of one side of the supporting block is fixedly connected with an installation frame, and balls are rotationally installed on the inner side wall of the installation frame; a disinfection ring is buckled on the inner side of the mounting frame, the outer side surface of the disinfection ring is coated with disinfection cotton, the disinfection cotton on the side surface of the disinfection ring makes contact with the balls on the inner side wall of the mounting frame, a box cover is arranged at the upper end of the disinfection box, the lower end of the box cover is in threaded connection with the first disinfection box, and a second disinfection box is arranged on the upper surface of the box cover. The problems that a traditional anti-infection protection device is simple in structure and cannot comprehensively disinfect a catheter in the using process are solved, the disinfection effect of the anti-infection protection device on a pipeline inserted into a catheter sheath is improved, meanwhile, the situation that disinfectant in the anti-infection protection device is used up in the using process is also avoided, and the service life of the anti-infection protection device is prolonged. And the durability of the anti-infection protection device is improved.

Provided is an extension catheter easy to insert into a tube inside a body. This extension catheter is inserted into a catheter and can protrude from a distal-side opening of the catheter. The extension catheter comprises a tubular member and a linear member having a distal end portion fixed to the tubular member. The tubular member includes a first resin having a portion located outside of the linear member in the radial direction and a second resin having a lower Shore D hardness than the first resin. A cross section of the tubular member in the radial direction has three regions obtained by equally dividing the tubular member in a direction passing through the centroid of the linear member and the centroid of the lumen of the tubular member, and designated as a first region, a second region, and a third region in order of increasing distance from the linear member. The first resin is positioned in the first region or in the first region and the second region, and the second resin is positioned at least in the third region. The first resin has a first exposed surface exposed on the outer surface of the tubular member.

Provided is a light radiation medical treatment device that can reliably irradiate a required place in a hollow organ with a laser beam. This light radiation medical treatment device comprises: a catheter 20 that can be inserted into a treatment instrument passage 11b formed in a video scope 11 constituting an endoscope system 10; and a light radiator 30 that has an optical fiber probe 32 capable of being inserted into the catheter 20, and causes a laser beam emitted from a laser device 31 to enter from a proximal end side of the optical fiber probe 32 and to be emitted from a light emission section 32a provided to the distal end side of the optical fiber probe 32, wherein the catheter 20 has a cylindrical body section 21 that can be inserted into a hollow organ L of a living body, and a balloon section 22 that is provided to the distal end side of the body section 21 in a manner allowing expansion and contraction in the radial direction of the body section 21, and can, by expanding, bring an outer peripheral surface at least partially into contact with an inner wall of the hollow organ L, and the laser beam emitted from the light emission section 32a passes through the balloon section 22 and is emitted from the outer surface side of the balloon section 22.

The catheter sheath assembly comprises an inner sheath tube and an outer sheath tube, the inner sheath tube and the outer sheath tube are accommodated in the outer sheath tube in a relative sliding mode in the extending direction of the inner sheath tube, and when the catheter sheath assembly is in butt joint with a catheter seat, an insertion section is inserted into an insertion cavity of the catheter seat until the insertion section abuts against the catheter seat, and the insertion section is inserted into the insertion cavity of the catheter seat. And the outer sheath tube continues to move towards the catheter seat until the outer sheath tube also abuts against the catheter seat. In this way, after the insertion section of the inner sheath tube makes contact with the catheter base, the outer sheath tube can continue to advance, so that the abutting force of the inner sheath tube and the catheter base is not too large, and when a doctor feels relative displacement of the inner catheter and the outer catheter, the inner catheter is already abutted against the catheter base, so that the doctor has expectations on the applied force and the abutting time; deformation of the catheter sheath assembly caused by excessive force is avoided, so that the implant can be smoothly pushed into the inner cavity of the micro catheter, and the operation safety and the conveying efficiency of the catheter sheath assembly are improved.