111 results about "Catheterise" patented technology

A blood pump assembly includes an introducer sheath with a proximal end and a distal end, a pump body which extends within the introducer sheath, and a catheter that interfaces with the pump body and extends proximally though the introducer sheath. In a rest state, the introducer sheath forms an oval cross-section sized to encompass the catheter and a medical device. In a constrained state when the pump body is within the introducer sheath, the cross-section of the introducer sheath is circular. The malleability of the introducer sheath allows larger medical devices to be passed through the introducer sheath, while still allowing other devices to be inserted through the introducer sheath after the pump has been guided through. A perimeter of oval cross-section of the introducer sheath is equal to the perimeter of the circular cross-section of the introducer sheath.

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.

The invention provides an electronic endoscope which comprises a disposable endoscope sheath and a reusable endoscope body, the endoscope body comprises a camera shooting assembly, an endoscope body handle part and an endoscope plug, the camera shooting assembly is electrically connected with the endoscope plug, the camera shooting assembly is connected to the far end of the endoscope body handle part, and the endoscope body handle part is electrically connected with the endoscope plug. The endoscope plug is connected to the near end of the endoscope body handle part; the endoscope sheath comprises an insertion catheter and a catheter handle part, the catheter handle part is connected to the near end of the insertion catheter, an endoscope body access port is formed in the catheter handle part, the camera component extends into the insertion catheter through the endoscope body access port, and the endoscope handle part is detachably connected with the catheter handle part. According to the invention, the camera shooting assembly and the data line for transmitting the camera shooting data are repeatedly used, so that the data line which is repeatedly used is a high-quality cable, the stability of data transmission is ensured, the anti-interference performance of the product is improved, and the like.

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.

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 discloses an elastic super-selection loach type bourdon tube lens system which comprises an operation portion and an insertion catheter connected with the operation portion, the insertion catheter is internally provided with at least a first channel, a second channel, a third channel and a fourth channel, a lens assembly is arranged in the third channel, and the fourth channel is internally provided with a second channel. An elastic metal wire is arranged in the tube wall of the insertion catheter, the elastic metal wire is spirally arranged in the length direction of the insertion catheter, and a hydrophilic coating is further arranged on the periphery of the insertion catheter. According to the elastic super-selection loach type bourdon tube lens system, the structure of the insertion catheter is improved, so that the elastic super-selection loach type bourdon tube lens system has better flexibility and strength, not only is good in torsion control performance and convenient to operate, but also is provided with a thin-wall large-cavity structure, and internal pipelines or tube bundles are convenient to arrange.

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.

This application relates to the field of bladder irrigation, and specifically discloses an irrigation device for visual transurethral resection of bladder tumors, which is arranged at one end of a catheter to connect the catheter with the bladder; it includes: a cylinder body with a piston cavity; a storage body with a chamber; a connecting piece fixedly arranged at one end of the catheter; a piston slidably arranged in the piston cavity; a sieving assembly arranged in the chamber to filter tumor tissues; wherein, an endoscope is arranged on the catheter to observe the internal condition of the bladder; the connecting piece has a joint inserted into the catheter nozzle to connect the catheter; the storage body is arranged on the cylinder body and is inserted into the connecting piece together with one end of the cylinder body to form a fixation; a first one-way valve communicating with the chamber and a second one-way valve communicating with the piston cavity are arranged in the connecting piece; a communication port is formed between the opposite parts of the inner wall of the piston cavity and the inner wall of the chamber to communicate the piston cavity and the chamber; the beneficial effect of this application lies in providing an irrigation device for visual transurethral resection of bladder tumors with a sieving function.

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.

This disclosure describes an apparatus for positioning a central guide pin into a glenoid cavity. The apparatus (100,100a,200,200a) is made up of: a base plate (110,210,210a); a handle mountable on the base plate; a plurality of barbs projecting (113,213,213a) from a bottom surface of the base plate; a guide tube (170,270,270a) threadedly connected to a lock tube (180,280,280a), wherein a longitudinal bore (d) extends along longitudinal bores of both the guide tube and lock tube, with the lock tube having an anti-rotation collar (185,285); a first protractor mechanism for adjusting an angle of inclination (α) of the guide tube from a vertical X-axis to the base plate; and a second protractor mechanism with a plane of adjustment being perpendicular to a plane of adjusting the first protractor mechanism, so that trajectory of the central guide pin inserted in through the guide tube (170,270,270a) is defined by these two perpendicular planes.

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.

The present invention discloses a guide device for inserting a guidewire for cardiovascular interventional surgery, belonging to the technical field of guidewire guidance. The device comprises a guide seat, a guidewire guiding and twisting assembly comprising a slider, a positioning pin elastically and slidably inserted on the slider, a second dial rotatably connected to the slider, and the second dial elastically connected to the first dial; the guidewire is clamped by the first dial and the second dial, both of which are fan-shaped structures and form a circular wheel, and the guidewire is inserted into a catheter sheath along the guide seat through the reciprocating circular wheel; the first dial and the second dial are toggled and placed on the slider, and the circular wheel clamps the guidewire; the positioning pin is squeezed and inserted into the guide seat by the second dial, thereby preventing blood from flowing out of the catheter sheath and contaminating the doctor's hands, the guidewire, and the catheter sheath. The guidewire is inserted into the catheter sheath by the guidewire guiding and twisting assembly through the reciprocating movement of the guidewire stored in the guidewire storage tube, thereby preventing the guidewire from accidentally being pulled out of the catheter sheath and causing blood vessels to be scratched.

The invention relates to the field of bladder irrigation, and particularly discloses a visual irrigation device for bladder tumor electric resection, which is arranged at one end of a catheter to communicate the catheter with a bladder. Comprising a cylinder with a piston cavity; the bin body is provided with a cavity; the connecting piece is fixedly arranged at one end of the conduit; the piston is slidably arranged in the piston cavity; the sieving assembly is arranged in the cavity to filter tumor tissues; wherein an endoscope is arranged on the catheter to observe the internal condition of the bladder; the connector is provided with a connector inserted into a catheter orifice to be communicated with a catheter; the bin body is arranged on the cylinder body and is inserted into the connecting piece together with one end of the cylinder body to form fixation; a first one-way valve communicated with the cavity and a second one-way valve communicated with the piston cavity are arranged in the connecting piece; the opposite parts of the inner wall of the piston cavity and the inner wall of the cavity form a communicating port to communicate the piston cavity with the cavity; the flushing device for the visual bladder tumor electric resection operation has the beneficial effect that the flushing device for the visual bladder tumor electric resection operation has the screening function.

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.

The invention disclosed herein relates to a system (1) for implanting a neurostimulation lead (2) in a subject's head and facial tissue (3), the system (1) comprising: a stimulation lead (2) configured for implantation in said tissue (3); an introducer (4) configured for temporary insertion into said tissue (3) and comprising a Tube portion (5); a tunneling tool (6) configured for temporary insertion into said tissue (3) and comprising a shaft (7), a shaft tip (9) releasably mounted to the shaft (7), and a pull suture (8) connected to the releasable shaft tip (9); a first trocar (10) configured for insertion into the introducer (4), the first trocar (10) comprising a receiving structure (11) for receiving and retaining the shaft tip (9) of the tunneling tool (6); a guide tube (12) configured for insertion into the introducer (4); a second trocar (13) configured for insertion into the guide tube (12); and a lead holder (14) configured for inserting the stimulation lead (2) through the guide tube (12) into said tissue. The invention further relates to a method of implanting a stimulation lead (2) in a subject's head and facial tissue (3) using said system (1).

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.