1482results about "Guide wires" patented technology

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.

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 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.

The present disclosure relates to a vascular closure device adapted for use in closing a puncture in a blood vessel after e.g. a percutaneous interventional procedure. The disclosure also relates to a method for vascular closure using such a vascular closure device.

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 discloses a neurosurgical operation navigation method which comprises the following steps: performing three-dimensional reconstruction according to brain image data of a patient to obtain an initial brain three-dimensional model, and planning a target operation path; obtaining a two-dimensional ultrasonic image collected by an ultrasonic tool and position information of the ultrasonic tool, and performing reconstruction to generate a three-dimensional ultrasonic image; correcting the initial brain three-dimensional model according to the three-dimensional ultrasonic image to obtain a corrected brain three-dimensional model; in the puncture operation process, real-time advancing position information and a real-time intracerebral image of the endoscope positioning guide wire tool are obtained in real time, and a navigation image is generated in combination with the corrected brain three-dimensional model; and displaying a navigation image, and indicating a position relationship between the real-time advancing position and the target surgical path, so as to navigate the surgical operation process. According to the technical scheme provided by the invention, the puncture operation process of the neurosurgery can be navigated more accurately and perfectly, and meanwhile, the influence of brain drift on the navigation accuracy can be avoided.

Provided are methods and devices for facilitating the advancement of a catheter device, such as an intracardiac ultrasound examination catheter, through a body wall, such as the septum of the heart. The catheter device is advanced through a subject's vasculature to a first body cavity. The catheter device is coupled to a guidewire previously placed within the vasculature between the first and second cavities. The catheter device is then advanced from the first body cavity to the second body cavity through a body wall separating the first and second cavities. To facilitate this advancement, the catheter device can be magnetically coupled to the guidewire. The magnetic assembly can be provided on a distal portion of a sleeve through which the distal portion of the catheter is advanced. A malleable dilator element can also be provided on the distal portion of the sleeve.

A system for application of neurostimulation includes an outer sheath, an elongate inner member in the outer sheath and movable relative to the outer sheath. The inner lumen has a distal end. An expandable member is coupled to the distal end of the inner member and is in the outer sheath. The expandable member is self-expanding upon from a compressed state in the outer sheath to an expanded state out of the outer sheath. The expandable member includes a distal portion including a plurality of wires woven together and a proximal portion including the plurality of wires extending parallel to a longitudinal axis. The system includes a plurality of electrode assemblies outward of the expandable member and circumferentially spaced around the expandable member. Each electrode assembly is coupled to two of the wires extending parallel to the longitudinal axis. Each electrode assembly includes a plurality of longitudinally-spaced electrodes.

A tactile-feedback system and method for guidewire-containing medical devices facilitates locating a guidewire within both a medical device and a blood vessel of a patient. In an example, a tactile-feedback system for a guidewire-containing medical device includes a guidewire and a rigid member in vibratory communication with a handholdable portion of the medical device. The guidewire includes interactive features along its length. The interactive features of the guidewire interact with the rigid member to produce user-perceptible vibrations in the handholdable portion of the medical device as the guidewire moves against the rigid member while being advanced out of the medical device or retracted into the device. The user-perceptible vibrations provide tactile feedback to a user of the medical device indicating a status of the guidewire with respect to a patient or the medical device.

The invention relates to a double-cavity micro catheter capable of controlling a guide wire angle in a coronary artery. Belongs to the technical field of medical instruments. The problems that when coronary artery bifurcation lesion is treated at present, especially when a bifurcation angle is an obtuse angle, a guide wire is difficult to pass through, operation is complex, and experience of an operator is relied on are solved. A first tube cavity and a second tube cavity which are independent are arranged in the micro-catheter body; the near end of the first tube cavity is communicated with the connector, the far end is provided with a far port formed in the tube wall, and the near side is provided with a through hole. A guide wire restraining piece is fixed to the outer wall of the micro catheter body, and the guide wire restraining piece and the catheter wall jointly define a guide wire restraining channel communicated with the far end opening and the through hole. The second tube cavity is provided with an inlet hole in the side wall and an outlet hole in the far end face. The guide wire restraining piece can be an elastic film, and two ends are fixed through fixing rings. Developing marks can be arranged near the through holes. A guide wire penetrating out of the far end opening is physically restrained and guided to turn through the guide wire restraining channel, so that the guide wire is stably and accurately guided into a target side branch blood vessel at a set angle through the through hole, and the operation success rate and safety are remarkably improved.

A delivery device for delivering an instrument into a catheter assembly may include a housing having a proximal end, a distal end, and a slot. The delivery device may include a guide feature, which may be disposed within the housing. The guide feature may extend through the slot. The delivery device may include an instrument disposed within the housing and extending through the guide feature. In response to movement of the guide feature along the slot in the distal direction a first distance, a first end of the instrument may be advanced in the distal direction a second distance, which may be greater than the first distance. A second end of the instrument may be stationary with respect to the housing.

The invention provides a microcatheter with a braid layer. The microcatheter comprises a catheter body and a tip part, the tube body is provided with a guide wire inner cavity capable of slidably receiving a guide wire; the tip part is provided with a cavity communicated with the inner cavity of the guide wire; the inner layer forms a guide wire inner cavity, the spring layer is wound around the inner layer in a winding mode and arranged in the length direction of the inner layer, the braid layer is arranged on the outer side of the spring layer and completely surrounds the spring layer, the polymer layer covers the outer side of the braid layer, and the braid layer extends into the tip part. Under the condition, the overlapped part of the tip part and the braid layer can have better bending resistance, so that the microcatheter with the braid layer, which is provided by the invention, is high in pushing property, high in flexibility and excellent in tension resistance and bending resistance, can be provided.

A catheter system and method of introducing an intravenous catheter into a patient includes a syringe, an access needle, a pliable catheter, and a guidewire. The syringe has a first chamber and a distal syringe end portion, which defines a conduit distally extending to a distal syringe opening such that the conduit fluidly connects the first chamber to the distal syringe opening. The access needle defines a needle lumen longitudinally extending therethrough and is secured relative to the distal syringe end portion. The pliable catheter is releasably secured relative to the access needle. The guidewire distally extends through the conduit toward the distal syringe opening and is configured to selectively move through the conduit, the distal syringe opening, and along the needle lumen to thereby guide movement of the pliable catheter relative to the access needle for introducing the pliable catheter into the patient.

The application discloses an aortic valve guide wire and a use method thereof, which comprises a head section, a transition section and a support section connected in sequence along an axial direction; the head section is composed of a polymer and further comprises a deformation capsule, at least one closed unit embedded in the head section, and an internal sealing electric field sensitive viscoelastic fluid; a mesh cable is arranged on the surface of the deformation capsule and extends to the transition section; the transition section and the support section are provided with a conductive film on the surface, and the conductive film is connected with the mesh cable and used for applying a non-uniform electric field to the deformation capsule to generate a regional viscosity difference and drive the head section to bend in a direction.The electric field sensitive viscoelastic fluid built in the head section generates a regional viscosity difference under the action of the non-uniform electric field, and the difference is converted into a directional bending moment through the synergistic effect of the mesh cable and the conductive film, so that the head of the guide wire can quickly respond to an external electric signal and accurately deflect.

The application discloses a guide wire transvalvular guide device for aortic valve replacement surgery, comprising: an inner tube providing a guide wire channel, the distal end of the inner tube being a guide wire outlet; the multiple far-end bags are isolated from one another, and the far-end bags are sequentially arranged on the periphery of the inner tube in the circumferential direction; the outer tube is slidably arranged on the periphery of the inner tube in a sleeving mode, and the far-end bag can be stored to adapt to interventional delivery; the inner tube and the outer tube are controlled by the control handle, a plurality of near-end bags are arranged in the control handle, and the near-end bags and the far-end bags are communicated in a one-to-one correspondence mode and are loaded with fluid; the driving sleeve and the rotating sleeve are arranged on the peripheries of all the near-end bags in a sleeving mode, an extrusion part protruding inwards in the radial direction is arranged in the driving sleeve, and when the driving sleeve rotates, the extrusion part acts on the near-end bags and enables the far-end bag exposed out of the outer tube to deform so as to change the pointing direction of the guide wire outlet. Through mutual linkage of the far-end bag and the near-end bag, the guide wire outlet direction is accurately adjusted, the interventional delivery and release performance is optimized, and the operation efficiency and convenience are improved.

The invention relates to an indwelling cannula (1) for puncturing a hollow body by means of a puncture needle, wherein the indwelling cannula (1) has a catheter (2) with a vasiform catheter tube (22), in which the puncture needle can be guided longitudinally displaceably. The indwelling cannula (1) has a manually actuable forward feed mechanism (5) by which a relative movement can be generated between the catheter tube (22) and the puncture needle as a result of manual actuation, by which a puncture tip (31), protruding from the catheter tube (22) at the near-patient end, of the puncture needle can be received in the catheter tube (22). Preferably, at least one operating element of the forward feed mechanism (5) is configured as a pivotably mounted lever (53) with at least one lever arm.

A robotic interventional device control system includes an interventional device comprising a longitudinal axis and configured to rotate about the longitudinal axis; a controller configured to control rotational movement of the interventional device about the longitudinal axis; at least one sensor configured to detect rotational movement of the interventional device about the longitudinal axis; and one or more hardware processors configured to receive motion data from the at least one sensor, the motion data indicative of whether the interventional device is rotating. The one or more hardware processors are further configured to generate a user interface comprising an instrument window having a representation of the interventional device and an interventional device marker associated with the representation of the interventional device. The interventional device marker includes a radial progress indicator configured to provide a visual indication of a degree of rotation relative of the interventional device about the longitudinal axis.

The invention provides a puncture guide wire with foresight detection and penetration functions and an intelligent intervention system, and belongs to the technical field of medical minimally invasive intervention instruments. The energy conversion assembly is innovatively integrated at the head end of the puncture guide wire, and the dual functions of A-type ultrasonic foresight detection and ablation are achieved through electric or optical path driving. The system supports two implementation modes: in an electroacoustic mode, a piezoelectric micro-electro-mechanical system is used for realizing ultrasonic transceiving and ablation; in the opto-acoustic mode, ultrasonic waves are generated by utilizing the opto-acoustic effect of the optical fiber, echoes are detected by utilizing optical interference, and ablation is performed by utilizing high-energy laser or ultrasonic waves. According to the invention, blood vessel, heart and occlusion lesions are identified based on a waveform fingerprint algorithm of time domain echoes, and a high-energy mode can be dynamically switched to assist in penetrating tissues. The problems that in an existing minimally invasive interventional operation, in-vitro image guiding precision is insufficient, a traditional IVUS / ICE catheter is too large in size and high in cost, and a traditional guide wire lacks active detection and auxiliary penetrating capacity when facing complex lesions are solved.

An integrated midline catheter system including a catheter adapter having a catheter extending therefrom, a stabilization platform, a proximal connector portion fluidly coupled to the catheter, and a side branch fluidly coupled to the catheter. The system also includes a near patient access port coupled to the side branch of the catheter adapter, wherein the near patient access port includes a connector portion couplable to a peripheral probe device. Furthermore, the system includes a catheter insertion device, wherein the catheter insertion device is configured to enable distal movement of the catheter adapter and catheter so as to position the catheter within a patient's vasculature.

A device for one-handed insertion of a guidewire includes a mounting / gripping member and an actuator carriage. A syringe mounted on the mounting / gripping member has a barrel and a plunger containing a valve assembly. A guidewire is installed through a passage in the plunger. The valve assembly engages the guidewire with at least one elastic seal in an interference fit. The carriage has a guidewire feed and a trigger. The trigger can slide the carriage axially along the mounting / gripping member, which moves the plunger forwardly and backwardly. While a user holds the mounting / gripping member, the trigger can be moved with a digit and another digit of the same hand engages the guidewire between the digit and the guidewire feed and advances it through the syringe, sensing the degree of resistance encountered by a portion of the guidewire.

To provide an improved catheter for performing RF ablation in small and difficult-to-reach ablation sites.SOLUTION: A catheter 22 includes an ablation electrode and an irrigation channel. The ablation electrode is configured to ablate tissue of a patient organ and is fitted on an insertion tube for insertion into the patient organ. The irrigation channel includes: (i) a lumen which is formed along an axis of the insertion tube, and is configured to flow irrigation fluid to the ablation electrode, and (ii) one or more irrigation holes, which are formed in the ablation electrode, and are configured to apply the irrigation fluid to the organ. The irrigation channel is configured to simultaneously (i) receive a guidewire for guiding the catheter and (ii) flow the irrigation fluid.SELECTED DRAWING: Figure 1

The application relates to the technical field of medical equipment, in particular to a special catheter rotating and bending module for a one-time use vascular interventional robot. The module comprises a horizontally arranged main frame, a rotating wheel and a bending wheel are arranged on the main frame; a connecting mechanism and a transmission mechanism are arranged on the main frame, the connecting mechanism is used for magnetically connecting with an electromagnet arranged on a robot main body, the transmission mechanism is used for connecting with an output shaft of a driving motor arranged on the robot main body and driving the rotating wheel and the bending wheel to rotate; a catheter bracket is detachably connected to the main frame, the catheter bracket is used for mounting a handle, a catheter and a guide wire are arranged on the handle; the bending wheel is in transmission with the handle and is used for controlling the catheter to bend, and the rotating wheel is used for adjusting the position of the bent catheter. The electromagnet is magnetically connected with the connecting mechanism, the whole device can be quickly installed by controlling whether the electromagnet is electrified, the device becomes a one-time consumable, the hygiene of a surgical process is guaranteed, and the surgical safety is improved.

A method of delivering a therapeutic agent to a nucleus pulposus of an intervertebral disc is provided. The method comprises inserting a delivery tool containing the therapeutic agent through an anterior portion, a lateral portion, or an anterolateral portion of an annulus fibrosus and into the nucleus pulposus of the intervertebral disc; and delivering the therapeutic agent to the nucleus pulposus of the intervertebral disc. Devices and kits are also provided.

A delivery device (1010) for a collapsible prosthetic heart valve (200) includes an inner shaft (1026), an outer shaft (1022), and a distal sheath (1024). The distal sheath forms a compartment with the inner shaft sized to receive the prosthetic heart valve in a collapsed condition. The inner shaft and the distal sheath may be movable relative to one another. The delivery device may also include a tube member (2000, 3000, 4000) and an outer sleeve (3100) overlying the tube member. The tube member may be configured to rotate or twist upon axial movement of the outer sleeve with respect to the tube member, the rotation or twisting of the tube member configured to rotate the prosthetic heart valve when the prosthetic heart valve is received within the compartment in the collapsed condition.

A catheter includes an ablation electrode and an irrigation channel. The ablation electrode is configured to ablate tissue of a patient organ and is fitted over an insertion tube for insertion into the patient organ. The irrigation channel includes: (i) a lumen which is formed along an axis of the insertion tube, and is configured to flow irrigation fluid to the ablation electrode, and (ii) one or more irrigation holes, which are formed in the ablation electrode, and are configured to apply the irrigation fluid to the organ. The irrigation channel is configured to simultaneously (i) receive a guidewire for guiding the catheter and (ii) flow the irrigation fluid.

The present disclosure relates to a delivery device such as a pusher for delivering a medical device such as a stent through tortuous anatomy while reducing twisting or flattening. The delivery device may also aid in expansion of the medical device upon reaching a target site. The delivery device may include a core wire and one or more coils disposed around the core wire. The one or more coils may function to effectively stiffen and / or increase the outer diameter of the delivery device along certain portions of its length.

The utility model discloses a guide wire fixing device relates to the technical field of intervention operation, including fixed bottom plate, fixed bottom plate is used for fixing the establishment on operating table or operating gown, and the top surface of fixed bottom plate is fixed with a plurality of guide wire clamps in parallel, and each guide wire clamp is provided with at least one guide wire clamp groove, and the guide wire clamp groove is used for corresponding with the guide wire one by one, and the guide wire clamp groove is used for clamping the guide wire, the utility model discloses a guide wire fixing device can avoid two or more guide wires to be wound each other, and can save manpower.

To provide an improved steering mechanism for a medical instrument including an endoscope.SOLUTION: A steering assembly for a medical device may include a handle having a recess and first and second wire guides disposed within the recess. At least one of the first or second wire guides may be secured in the recess to prevent rotation of the first or second wire guide within the recess. The first and second wire segments may be configured to advance a sheath coupled to the steering assembly in first and second directions. The first wire segment may pass through a first gap between the first wire guide and the second wire guide. The second wire segment may pass through a second gap between the first wire guide and the second wire guide. Neither the first gap nor the second gap may occupy an overlapping space.SELECTED DRAWING: Figure 1B

The invention relates to a robotic module assembly 2 for an endovascular procedure. The robotic module assembly 2 comprises a pathway 4 for accommodating a tubular device 14 for an endovascular procedure, a first drive roller 18 and a second drive roller 20. The robotic module assembly 2 further comprises a gear assembly 26 comprising a slot 28 that extends in a longitudinal direction 30 in parallel to the longitudinal axis 16 through the gear assembly 26. The slot 28 extends from an outer radial surface 32 of the gear assembly 26 to the pathway 4 along a trajectory 6. The trajectory 6 is at least partially curved. It has been found that by providing the slot 28 with a trajectory 6 which is at least partially curved, a specific sitting position of the tubular device 14 can be defined at the pathway 4.

Described herein are devices and related methods for occluding at least a portion of a body lumen during a surgical procedure. In some embodiments, the device includes an inner shaft defining a lumen therethrough and a first aperture, and an outer shaft including a flexible member and defining a lumen therethrough and a second aperture positioned on the outer shaft proximally relative to the flexible member. The inner shaft extends through the lumen of the outer shaft such that at least a portion of the outer shaft is axially translatable toward and away from a distal portion of the inner shaft. The flexible member is movable between an unexpanded configuration and an expanded configuration when at least a portion of the outer shaft is axially translated toward or away from the distal portion of the inner shaft. In some embodiments, the devices and methods are used for endoscopic surgical procedures.