3651 results about "Guide wires" patented technology

A method for manufacturing a catheter (102) including a rapid exchange port (157). The method can include the steps of generating a port (258) in a catheter shaft (210), inserting a guidewire lumen (118) into the port (258), pulling the guidewire lumen (118) in a proximal direction, and pushing the guidewire lumen (118) in a distal direction so that the guidewire lumen (118) is within the catheter shaft (210). The method can also include the steps of thermally bonding the guidewire lumen (118) within the catheter shaft (210), trimming the guidewire lumen (118) so that a guidewire lumen (118) proximal end is flush with a catheter shaft (210) exterior.

A system for delivering a fluid to a target site of a patient's vasculature having a catheter having a proximal end, a distal end, and a lumen defined by an interior surface of the catheter extending longitudinally through the catheter between the proximal end and the distal end, a guiding element having a distal end, a proximal end, and an exterior surface, the guiding element positioned in the lumen creating an area, between the exterior surface of the guiding element and the interior surface of the catheter, having an effective cross-sectional area sized fluid communication while the guiding element is in the lumen. Also, a method of performing a neurovascular procedure includes providing a multi-catheter assembly including an access catheter, a guide catheter, and a procedure catheter, coupling the assembly to a robotic drive system, and injecting contrast media into the assembly without removing a guiding element.

The application relates to the field of medical devices, in particular to a repair system capable of accurate positioning, which comprises a delivery catheter, a positioning support arranged in the delivery catheter, an anchoring mechanism, a flexible sleeve and a guide wire, the positioning support is arranged at the distal end of the delivery catheter, the positioning support is provided with a plurality of anchoring points distributed in the circumferential direction, the flexible sleeve is provided with a plurality of connecting points arranged in correspondence with the anchoring points, the guide wire passes through the connecting points and the anchoring points corresponding to the connecting points in sequence, and after the positioning support is released, the anchoring mechanism pushes the flexible sleeve, so that the flexible sleeve cooperates with the guide wire and guides the anchoring mechanism to reach each anchoring point along a predetermined route and complete anchoring; the application not only simplifies the structure of the device, but also realizes accurate guidance.

An introducer can include an introducer needle and an introducer sheath having a transition therebetween that eases tissue over a distal end of the introducer sheath without catching tissue thereon tissue despite an excised portion of the introducer needle. The introducer needle can include a needle shaft having a longitudinal needle slot extending from a proximal portion of the needle shaft through a distal needle tip, which results in an excised portion of a heel of a bevel of the needle tip. The introducer sheath can include a sheath body and a tapered sheath tip. The sheath body can be over the needle shaft sealing the needle slot thereunder but for a sheath-body opening in a proximal portion of the sheath body for an access guidewire. The introducer can include the transition from the bevel of the needle tip to at least the taper of the sheath tip.

A modular endoscope system comprises an imaging guidewire comprising an elongate shaft extending from a proximal end to a distal end, an imaging device located proximate the distal end of the elongate shaft and a lighting element located proximate the distal end of the elongate shaft, and an intervention accessory configured to slide along the elongate shaft to provide a medical intervention. A method of providing a medical intervention to an internal anatomic location comprises inserting an imaging guidewire into an anatomic passageway, viewing target anatomy with imaging capabilities of the imaging guidewire, pushing an intervention accessory along the imaging guidewire to the target anatomy, and operating the intervention accessory to provide an intervention on the target anatomy.

A guidewire for backloading and inserting a percutaneous pump affixed to a cannula includes a proximal section made of a first material, with a first diameter, a rounded proximal end, and a distal end. The guidewire also includes a distal section made of a second material, with a second diameter which is greater than the first diameter, a distal end, and a proximal end abutting the distal end of the proximal section. The first material of the proximal section is selected to be softer than a material of the percutaneous pump to reduce damage to the pump during backloading. The distal section of the guidewire is configured to be stiffer than the proximal section to insert the percutaneous pump in a desired location without damaging the guidewire.

A drive system for achieving supra-aortic access and neurovascular treatment site access includes a guidewire hub configured to adjust an axial position and a rotational position of a guidewire, a procedure catheter hub configured to adjust an axial position and a rotational position of a procedure catheter, a guide catheter hub configured to adjust an axial position of a guide catheter, and an access catheter hub configured to adjust an axial position and a rotational position of an access catheter, the access catheter further configured to laterally deflect a distal deflection zone of the access catheter.

Rapidly insertable central catheters (“RICCs”), introducers, and insertion devices including combinations and methods thereof are disclosed. For example, a RICC system can include an introducer and a RICC insertion assembly including a RICC assembly disposed in a RICC insertion device. The RICC assembly can include a RICC, an access guidewire, and a splittable casing over a catheter tube of the RICC and the access guidewire forming a longitudinal composite. The RICC insertion device can include a frame and a nose cover forming a split channel that splits away from a through channel of a nose of the frame. The RICC insertion device can be configured for advancing the RICC assembly by rolling the longitudinal composite across roller wheels disposed in the frame. The through channel can be configured for advancing the catheter tube therethrough while the split channel can be configured for both splitting and passing the splittable casing therethrough.

Intravascular imaging devices as well as methods for making and using intravascular imaging devices are disclosed. An intravascular imaging device may include a catheter shaft including a proximal region, an imaging window region, and a distal end region having a guidewire lumen formed therein. The catheter shaft may include a telescoping assembly having a telescope hub configured to be secured to a pullback assembly. The telescope hub may include a proximal flange, a loading region disposed distal of the proximal flange, and a grip region disposed distal of the loading region. The grip region may have a non-circular cross-sectional shape. An imaging core may be disposed within the catheter shaft.

An introducer sheath is described. The introducer sheath may include a tubular body. The tubular body may extend from a distal end toward a proximal end. The tubular body may include a lumen. The lumen may at least partially be defined by a wall. A channel may be disposed within the wall. The channel may be configured to receive a guidewire. The tubular body may include an expandable portion expandable to increase a cross-sectional area of the lumen.

An introducer can include an introducer needle (134) and an introducer sheath (136) having a transition therebetween that eases tissue over a distal end of the introducer sheath without catching tissue thereon tissue despite an excised portion of the introducer needle. The introducer needle can include a needle shaft (140) having a longitudinal needle slot (146) extending from a proximal portion of the needle shaft through a distal needle tip (144), which results in an excised portion of a heel of a bevel (150) of the needle tip. The introducer sheath can include a sheath body (162) and a tapered sheath tip (170). The sheath body can be over the needle shaft sealing the needle slot thereunder but for a sheath-body opening (166) in a proximal portion of the sheath body for an access guidewire.

The invention relates to an atrial septum puncture system, and belongs to the technical field of medical instruments. The atrial septum puncture system comprises a conveying sheath assembly, a dilator assembly and a puncture guide wire. The dilator assembly comprises a dilator, a puncture needle and a control handle. The conveying sheath assembly, the dilator assembly and the puncture guide wire are combined into the atrial septum puncture system, puncture operation is more convenient and safer, and the puncture guide wire and a puncture needle do not need to be frequently exchanged in the puncture operation process; according to the dilator assembly, the control handle comprises the moving part and the limiting part, the moving part is fixedly connected with the near end of the puncture needle, the moving part is used for driving the puncture needle to move in the axial direction of the moving part, and a user can control the puncture needle conveniently; the limiting step is arranged on the outer wall of the moving part, and the axial distance between the near end of the limiting part and the limiting step is 0.5-10 mm, so that the distance of a puncture needle extending out of the dilator can be limited, and the safety of puncture operation can be guaranteed.

The invention discloses a shock wave forming device with a valve blood perfusion function, which relates to the technical field of medical instruments and comprises a catheter sheath, a shock wave forming balloon group, a shock wave generating component, a handle and a magnetic flexible net opening and closing structure. A guide wire is slidably arranged in the catheter sheath; the shock wave forming balloon set comprises a plurality of shock wave balloons, one ends of the shock wave balloons are connected with the end of the guide wire through flexible net-shaped structures, and the other ends of the shock wave balloons are connected with the end of the catheter sheath through flexible rod-shaped structures. The shock wave generating assembly comprises an axial shock wave generating electrode pair and a circumferential shock wave generating electrode pair; and the magnetic type flexible net opening and closing structure is arranged between the guide wire end part and the flexible net-shaped structure. The blood vessel can be mechanically supported or loosened; through the axial shock wave generation electrode pair and the circumferential shock wave generation electrode pair, the blocking plaque can be opened in the forward direction, and shock waves can be emitted in the circumferential direction to crack or crush calcium deposits; in addition, broken calcified plaques or aortic plaques, thrombus and the like can be captured.

The invention discloses a wire feeder and handheld welding equipment. The wire feeding machine comprises a wire guide mechanism, and the wire guide mechanism comprises a first wire guide wheel; a wire feeding channel for guiding a welding wire is formed between the second wire guide wheel and the first wire guide wheel; the adjusting assembly comprises a first force arm, one end of the first force arm is hinged to the first fulcrum, the other end of the first force arm is flexibly supported on the second fulcrum, and the second godet wheel is rotationally connected to the first force arm; and the distance between the second wire guide wheel and the first wire guide wheel can be dynamically adjusted along with the change of the diameter of the welding wire passing through the wire feeding channel under the assistance of the first force arm. By means of the mode, the wire feeder can adjust the width of the wire feeding channel in a self-adaptive mode, effectively adapts to changes of the diameter of a welding wire in the wire feeding process, guarantees stable conveying of the welding wire, and avoids the phenomenon of wire clamping or unsmooth wire feeding.

The invention discloses a binocular X-ray guide wire three-dimensional positioning method, a binocular X-ray guide wire three-dimensional positioning device and binocular X-ray guide wire three-dimensional positioning equipment based on epipolar geometry and a storage medium. The method comprises the steps that two to-be-processed images collected by two X-ray scanning devices in the biplane digital subtraction angiography system for a target object in a guide wire intervention state are acquired, and the to-be-processed images comprise intervention guide wires; conducting guide wire positioning on the two to-be-processed images based on projection matrixes which are obtained through pre-calibration and respectively correspond to the two X-ray scanning devices, and determining path information of the interventional guide wire, the path information comprising first position information of the interventional guide wire; obtaining an expected path of the interventional guide wire, and determining an offset error of the interventional guide wire based on expected position information of the interventional guide wire in the expected path and the first position information; the expected path of the intervention guide wire is updated based on the offset error, accurate positioning of the intervention guide wire and updating of the expected path are achieved, and accurate data support is provided for subsequent treatment.

The utility model discloses a micro guide wire, which relates to the technical field of instruments for interventional diagnosis and treatment and comprises a far-end component and a near-end component. The far-end component is arranged at the far end of the near-end component; the far-end part comprises an outer-layer spring, an inner-layer twisted wire and a developing wire; the developing wire and the inner-layer twisted wire are sequentially wound around the far end of the near-end component, and the developing wire is located on the side, close to the far end of the near-end component, of the inner-layer twisted wire. One end of the developing wire is connected with the far end of the near-end component, and the other end of the developing wire is connected with one end of the inner-layer twisted wire and the near-end component; the other end of the inner-layer twisted wire is connected with the near-end component; and one end of the outer-layer spring is connected with the far-end end part of the near-end part, and the other end of the outer-layer spring is connected with the outer wall of the near-end part. The far end is wound by a double-layer spring, the flexibility and the plasticity are both considered, the twisting control performance of the micro guide wire is guaranteed, the passing ability of the micro guide wire in a tortuous blood vessel is improved, the near end is made of stainless steel, and it is guaranteed that the whole micro guide wire has good supporting force and pushing performance.

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

A guidewire assembly configured to be deployed from an ancillary assembly. The guidewire assembly has a distal puncture tip extending from a deployed distal-shaped section configured to mitigate piercing tip touch back on a biological wall after the elongated guidewire assembly is deployed from the ancillary assembly, and the distal puncture tip crosses a biological wall.

The present application relates to the field of medical devices, and in particular to a guideable positioning anchoring system, comprising a delivery catheter, a positioning bracket arranged in the delivery catheter, an anchoring mechanism, a flexible sleeve and a guiding mechanism, wherein the positioning bracket is arranged at the distal end of the delivery catheter, and the positioning bracket is provided with a plurality of anchoring points distributed along the circumferential direction, the flexible sleeve is provided with a plurality of connection sites, and the guiding mechanism comprises a plurality of guide wires, which respectively pass through the connection sites and are connected with the anchoring points, wherein the distal end portion of the anchoring mechanism is sleeved in the flexible sleeve, and the flexible sleeve cooperates with the guide wire so that the anchoring mechanism can be guided to each anchoring point along a predetermined route and complete anchoring; the anchoring mechanism in the present invention can be guided to each anchoring point along a predetermined route and complete anchoring, without the need to repeatedly search for the position through images, and the operation is convenient and the accuracy is high.

The invention discloses a method and a system for detecting an antibacterial coating micro guide wire. The method comprises the following steps: applying a composite stress field to a guide wire to obtain stress distribution data; determining a stress response abnormal area according to the stress distribution data and applying dual-frequency vibration excitation to obtain nonlinear vibration response data and vibration energy dissipation data; force-sensitive fluorescent molecules are applied to the stress response abnormal area for treatment, and conformational changes of the stress response abnormal area are monitored to obtain preliminary spatial distribution data of the microcracks; injecting a multi-ion fluorescent tracer into the micro-crack area, and monitoring the migration rule of the multi-ion fluorescent tracer to obtain pH value distribution data and oxidation-reduction potential distribution data; bacterial suspension with specific fluorescence response is injected into the micro-crack area, and antibacterial activity evaluation data is obtained by monitoring the fluorescence response of the bacterial suspension. According to the technical scheme, the microcracks on the surface of the antibacterial coating micro guide wire are accurately detected and positioned, and the influence degree of the microcracks on the antibacterial function can be accurately evaluated.

A supra-aortic vessel access robotic control system includes a guidewire hub configured to adjust each of an axial position and a rotational position of a guidewire; a guide catheter hub configured to adjust a guide catheter in an axial direction; and a procedure catheter hub configured to adjust each of an axial position and a rotational position of a procedure catheter, and also to laterally deflect a distal deflection zone of the procedure catheter.

The application provides a wire cutting machine tool automatic wire feeding guide mechanism. The application solves the problem that when the water flow contains many impurities, the internal structure of the machine head is abraded, the water flow is uneven, and the wire feeding is unsuccessful. The application directly drives the wire guide tube to pass through the upper machine head and align with the lower machine head after the workpiece, directly feeds the wire in the wire guide tube into the lower machine head, greatly improves the accuracy of wire feeding, and effectively reduces the number of wire feeding failures.

The microcatheter comprises a protective tube, one end of the protective tube is fixedly connected with a tail tube, and the end, away from the tail tube, of the protective tube is provided with a catheter structure; the catheter structure comprises an outer tube fixedly connected with the protective tube, an inner tube is slidably connected into the outer tube, an elastic tube is fixedly connected to the end, away from the protective tube, of the inner tube, an expansion frame is embedded in the elastic tube, a driving sleeve is arranged on the protective tube, and the driving sleeve is fixedly connected with the inner tube. According to the endoscopic microcatheter, by arranging the catheter structure, when a reverse guide wire technology is started and a forward guide wire is introduced into the endoscopic microcatheter, the inner tube can be deduced to slide towards the forward guide wire, so that the inner tube extends out of the outer tube, then the expansion frame drives the elastic tube to expand, and the end face of the elastic tube can completely abut against the inner diameter of the forward guide wire; in this way, the forward guide wire can enter the reverse micro-catheter smoothly, and operation of medical staff is facilitated.

The invention provides a thrombus removal catheter for intracavity treatment, and belongs to the technical field of medical instruments. Comprising a first guide rod and a cutter body, a guide wire is inserted into the first guide rod, the outer wall of the first guide rod is slidably sleeved with a first isolation sleeve, the outer wall of the first isolation sleeve is slidably sleeved with a second guide rod, and the supporting assembly is used for supporting blood vessels of a patient. By arranging the supporting assembly, thrombus which is separated or falls off from the inner wall of a blood vessel can be blocked and protected, the thrombus is prevented from flowing to the far-end blood vessel along with blood, and the phenomenon of far-end embolism is avoided; the supporting assembly can collect thrombus separated in the cutting process or falling off from the inner wall of a blood vessel in a unified mode, the collected thrombus is discharged out of the body of a patient, the phenomenon of far-end embolism is avoided, and it is guaranteed that the thrombus is not left in the whole thrombus removing process.

The invention provides an adjustable structure, comprising: a variable catheter provided with a projecting portion; the protruding part comprises an outer protruding side and an inner protruding side, and the protruding height of the outer protruding side is larger than the protruding height of the inner protruding side. The invention further provides a guide wire assisted transvalvular device comprising the adjustable structure. The transverse position of the far end of the variable catheter is controlled by adjusting the protruding height, so that the valve crossing device can be stably fixed to the aortic valve opening, a guide wire located in the adjusting pipe can conveniently and smoothly cross the aortic valve opening, and preparation is made for a subsequent TAVA operation.

The invention provides a Y-shaped collaborative operation device for a digestive endoscope and an optical fiber clamping-three-dimensional force sensing method, and relates to the technical field of optical fiber sensing detection. The Y-shaped expanding opening and closing assembly is fixedly connected with the tail end of the main endoscope arm and used for expanding the two corresponding second channels to be opened and closed in a Y shape; the two sub-operation arms penetrate through the two second channels corresponding to the sub-operation arms and extend to the outer portion of the Y-shaped expanding opening and closing assembly, and the sub-operation arms are provided with a plurality of third channels arranged in the circumferential direction; the second driving guide wire penetrates through the third channel from the front end of the sub-operation arm and is fixedly connected with the tail end of the sub-operation arm, and the bending direction of the sub-operation arm is adjusted by controlling stretching and retracting of the second driving guide wire. And the clamping-three-dimensional force sensing operation assembly is fixedly connected with the tail end of the sub-operation arm and is used for sensing the three-dimensional force and / or the clamping force generated when the clamping-three-dimensional force sensing operation assembly interacts with the digestive tract tissue.

The embodiment of the application belongs to the technical field of medical instrument equipment, and relates to a trailing end of an interventional robot, which is used for delivering an elongated medical instrument, the elongated medical instrument comprising a guide wire and at least two catheters, the latter catheter being at least partially arranged in the former catheter, and the guide wire being partially arranged in the latter catheter; wherein the trailing end of the interventional robot comprises a driving device, a power device, a sensing device and a control device, the driving device, the power device and the sensing device are connected with the control device, and in an initial state, any catheter is clamped on two adjacent driving devices in a curved state. The technical scheme provided by the application can shorten the distance between adjacent driving devices through the curved arrangement of the catheter, reduce the overall size of the equipment, reduce the product cost, and be beneficial to product installation.

The invention belongs to the technical field of light-weight high-strength aramid fibers, and particularly relates to a light-weight high-strength aramid fiber composite cord fabric and a production method thereof.According to the light-weight high-strength aramid fiber composite cord fabric and the production method thereof, by designing a yarn guide component with the proper roughness range and the twisting speed, friction of the yarn guide component to fibers is reduced, and strength loss is reduced; a certain twisting direction, twisting degree ratio and twisting tension of the A yarn and the B yarn are designed, so that the A yarn and the B yarn contribute the maximum strength at the same time. Therefore, on the premise that the specification of the cord fabric is not changed, the breaking strength of the aramid fiber composite cord fabric is improved.

A percutaneous targeting device comprises a body holding an extension. The body has a target guide holding a target pin which may be a K-wire. The extension has two guide sleeves, holding a guide wire. All wires are held in a common plane. The guide wires serve as a guide for cannulated fixation screws. The extension is movable against the body to adjust the angle between the target pin and the guide wires.

The invention is suitable for the technical field of alloy wire drawing, and provides alloy wire drawing equipment and a drawing process thereof.The alloy wire drawing equipment comprises a main body assembly, a wire guiding assembly installed on one side of the main body assembly and a winding assembly arranged on the other side of the main body assembly, and the main body assembly comprises a frame and a box body installed on the top of the frame; a cover body is hinged to the top of the box body, a die holder assembly and two cone pulley assemblies are arranged in the box body, and the device solves the problem that for a non-equal-ratio stepped special cone pulley, a horizontal die holder swinging and inclining mode cannot enable a wire drawing die to be matched with a cone pulley groove in position. The device achieves the effects that the splicing dislocation height can be adjusted according to the shape of the cone pulley through the cooperation of a plurality of connecting blocks capable of being adjusted independently and the jacking column, the device can adapt to the non-equal-ratio stepped special cone pulley, the use requirements of the cone pulleys with different lengths can be met by freely increasing and decreasing the number of the connecting blocks, and meanwhile the functionality of the device is improved.