37 results about "Catheter manipulation" patented technology

A robotic catheter manipulator assembly may include a support member including a catheter manipulation base and a sheath manipulation base movable relative to each other and to the support member. Each respective manipulation base may be releasably connectable to a catheter cartridge and a sheath cartridge. A drive mechanism may be provided for moving the catheter and sheath manipulation bases relative to each other and to the support member. The manipulation base or the cartridge may include a first element engageable with a complementary second element slidably engaged with the other one of the manipulation base or the cartridge for controlling movement of a component connected to the cartridge. The cartridge, for example, may be a transseptal cartridge, a catheter cartridge or a sheath cartridge, and the component may respectively be a surgically insertable device such as a transseptal needle, a catheter or a sheath.

A diagnostic catheter with a steering device to direct the distal end of the catheter while it is inserted in a vessel. The catheter may include either a bi-directional steering mechanism, or a unidirectional steering mechanism. Pre-formed catheters with no steering means are also provided. The catheter bodies include a plurality of ring electrodes used for sensing the intracardial electrogram signal during operation of the catheter. The ring electrodes are placed in ohmic contact with their corresponding signal wires by a solderless connection. In addition, the catheter may be embodied as a basket catheter including a plurality of splines. After the catheter is inserted into the vessel or organ to be examined (typically the heart), the splines may be expanded from an at-rest position to form the basket. A central retractable and steerable member is included to provide the expansion force. The expansion force can also be provided by moving the proximal portion of the catheter relative to the central member. Each of the splines forming the basket includes a length of spring wire disposed therein to provide conformal forces causing the splines to conform to the surfaces being inspected.

The invention provides a vascular intervention operation guide-wire and catheter operating device and vascular intervention operation guide-wire and catheter operating modules. The device comprises two vascular intervention operation guide-wire and catheter operating modules arranged on a machine seat, and a rotating component each module comprises a rack and a propelling component which comprises a support, a driving wheel, a driven wheel, a pressurizing component, a propelling motor, an input guide pipe and an output guide pipe, the supports the input guide pipes and the output guide pipes are arranged on the corresponding racks, the propelling motors, the driving wheels and the driven wheels are arranged on the corresponding supports, the pressurizing components are arranged on the corresponding supports and push and press the corresponding driven wheels, the driving wheels are connected with the corresponding propelling motors, and a guide-wire and catheter is clamped between the driving wheels and the driven wheels. The rotating component comprises a gear set, a gear mounting frame, a rotating motor and an electroconductive slip ring, the gear mounting frame is arranged on the racks, and the gear set and the rotating motor are arranged on the gear mounting frame. The vascular intervention operation guide-wire and catheter operating device and the vascular intervention operation guide-wire and catheter operating modules are in working efficiency, so that working intensity of doctors can be lowered.

A catheter of the invention includes an elongated flexible tubular main body; a plurality of manipulation wires inserted through the tubular main body and having tips connected to a distal part of the tubular main body; a manipulation-part main body provided at a base end of the tubular main body; and a bending manipulation part. The bending manipulation part has an engagement part engaging with base ends of the manipulation wires, and individually applies pulling force to the plurality of manipulation wires through pulling operations so as to bend the distal part of the tubular main body. The bending manipulation part is provided so as to be movable with respect to the manipulation-part main body. The path lengths of the plurality of manipulation wires from the tips thereof to the engagement part are simultaneously increased or decreased when the bending manipulation part and the manipulation-part main body move relative to each other.

A catheter assembly includes a hollow catheter; a catheter hub to which the catheter is fixed; an inner needle including a needle tip, the inner needle being detachably disposed inside of the catheter; a needle hub to which the inner needle is fixed; a catheter operation member configured to move the catheter relative to the inner needle; and a support member disposed at the needle hub. The support member includes a support main body portion that is movable between (i) a first position located on a side of the catheter opposite the catheter operation member, at which the catheter is interposed between the support member and the catheter operation member, and the support main body portion contacts and supports the catheter, and (ii) a second position that is a different position from the first position, at which the support main body portion does not contact the catheter.

A master includes an externally operated manipulation unit. The master transmits, upon detection of an amount of operation of a catheter and a delivery wire by the manipulation unit, the detected amount of operation to a slave. The slave includes an actuator applying a force in a longitudinal axial direction to a delivery wire or the like according to the applied driving amount to move the delivery wire. The manipulation unit includes a secondary catheter manipulation unit and a delivery wire manipulation unit for operating a catheter and a delivery wire individually, arranged in close proximity at the surface of a casing of the master.

A tubular insertion aid for catheter manipulation is disclosed. The insertion aid is particularly suited for urinary catheters, such as hydrophilic urinary catheters for intermittent use.

MRI-guided robotics offers possibility for physicians to perform interventions remotely on confined anatomy. While the pathological and physiological changes could be visualized by high-contrast volumetric MRI scan during the procedure, robots promise improved navigation with added dexterity and precision. In cardiac catheterization, however, maneuvering a long catheter (1-2 meters) to the desired location and performing the therapy are still challenging. To meet this challenge, this invention presents an MRI-conditional catheter robotic system that integrates intra-op MRI, MR-based tracking units and enhanced visual guidance with catheter manipulation. This system differs fundamentally from existing master / slave catheter manipulation systems, of which the robotic manipulation is still challenging due to the very limited image guidance. This system provides a means of integrating intra-operative MR imaging and tracking to improve the performance of tele-operated robotic catheterization.

A tubular insertion aid for catheter manipulation is disclosed. The insertion aid is particularly suited for urinary catheters, such as hydrophilic urinary catheters for intermittent use. The insertion aid comprises a forward opening, a rearward opening and a slit opening extending along a part of the sidewall of the tubular insertion aid, so that a first portion of the tubular insertion aid in the axial direction forms a solid circumference around the tubular insertion aid, and a second portion in the axial direction is provided with the slit opening extending in an axial direction of the tubular insertion aid. The tubular insertion aid further comprises a first inward protrusion formed on the interior side of the tubular insertion aid in a part of the second portion being provided with the slit, wherein the first inward protrusion is arranged along a first protrusion line extending along the inward circumference of the tubular insertion aid essentially perpendicularly to the axial direction of the tubular insertion aid.

The invention discloses a transcatheter heart valve clamping system, comprising a heart valve clamp part and a conveying system part, wherein a heart valve clamp comprises an upper clamping arm and alower clamping arm, and a conveying system comprises a conveying catheter and an operating handle. According to the system, a heart valve is fixed through mutual clamping between the upper clamping arm and the lower clamping arm; and the system has the advantages of being simple in structure, accurate in operation, completely recyclable and the like, and can be used for treating heart valve diseases such as mitral regurgitation and tricuspid regurgitation.

The invention relates to an artificial intelligence electro-cardio lead doppler color ultrasonic all-in-one machine, and belongs to the field of medical apparatuses and instruments and medical engineering. The artificial intelligence electro-cardio lead doppler color ultrasonic all-in-one machine mainly structurally comprises an ultrasonic imaging module, a lead connector, an electro-cardio module, a prompting and alarm module, an artificial intelligence module, a PC processing module and a display module. The artificial intelligence electro-cardio lead doppler color ultrasonic all-in-one machine can prompt the blood vessel diameter, the blood vessel speed, the catheter implantation depth, the distance, away from the best position, of the head end of the catheter and other information in an artificial intelligence mode, and send out prompting languages similar to the proper blood vessel diameter, the proper blood flow speed, the catheter implanted depth, the distance away from the bestposition and the like. A medical worker can conveniently perform corresponding operations according to prompts and information. When the implanted catheter is excessively deep, when the machine enters the right atrium, sound or flashing light alarm can be triggered. The operation success rate of the catheter inside the vein can be effectively increased, the operation time is shortened, and the working efficiency of the medical worker is improved.

The invention discloses a main end guide wire / catheter operating device of vascular intervention surgical robot. The main end guide wire / catheter operating device can separately feed back axial forceand circumferential force and can simulate actual surgical operation habits of doctors. The device comprises a box body, a brushless direct current motor, a transmission assembly, an electromagnetic connector and an axial force feedback assembly, wherein the brushless direct current motor is connected with a driving part of the electromagnetic connector through the transmission assembly, a drivenpart is connected with a fixed section of a sleeve telescopic assembly, and a telescopic section of the sleeve telescopic assembly extends out of the box body to be connected with a guide wire / catheter. When circumferential sensing needs to be provided, the driving part and the driven part of the electromagnetic connector are attracted, so that the brushless direct current motor provides circumferential resistance for the sleeve telescopic assembly through the transmission assembly, and then the circumferential force feedback function is achieved. When axial sensing needs to be provided, a positive pressure generation assembly in the axial force feedback assembly generates displacement to drive a rubber block assembly and the telescopic section in the sleeve telescopic assembly to generateaxial friction force so as to provide axial resistance, and the axial force feedback function is achieved.

The invention discloses an adjustable microcatheter for cerebrovascular intervention and a use method thereof. The adjustable microcatheter comprises a guide wire, and further comprises a catheter body, an avoidance hole, a patch, a soft cushion, a clamping sleeve, clamping plates, a threaded sleeve, a handle, an insulating sleeve, a push plate, a spring, a conductive block and an electromagnet. The adjustable microcatheter for cerebrovascular intervention is easy to operate and powerful in function. Firstly, the catheter can be positioned and fixed through the catheter fixing type design, andthe stability and safety in a subsequent operation process are ensured; and secondly, the guide wire in the catheter can be positioned through the cooperation effect of a clamping type guide wire mechanism, the accuracy of treatment operation is improved, the operation burden of medical staff is relieved, and the purpose of satisfactory clinical application and popularization is finally achieved.

The invention discloses a multipolar radiofrequency ablation catheter which is applicable to being used in renal artery vessels, comprising three parts of a catheter ablation working end, a main body section and a handle. The catheter ablation working end adopts a kinematic pair mechanism structure. The kinematic pair mechanism comprises a plurality of sets of single-unit front and back crank kinematic pairs. Each single-unit front and back crank kinematic pair is connected with a set of electrode tube and convex ring electrodes to constitute an independent or linked single-unit catheter ablation working end. A plurality of convex ring electrodes are evenly distributed the periphery of vessels and are closely attached to the inner wall of renal artery for mapping and ablation. The catheter of the invention has the advantages of simple and convenient operation, flexible adjustment, precise location of ablation, real-time monitoring and adjusting of ablation temperature and radio-frequency power, reducing treatment complication and lowering the surgical risk.

The invention discloses a spherical double-cavity micro-catheter, and belongs to PCI surgical instruments. The spherical double-cavity micro-catheter comprises a head end, a guide wire distribution mechanism and an operating catheter, wherein the operating catheter is a double-cavity catheter and is internally provided with a main cavity and a branch cavity; the main cavity penetrates through theguide wire distribution mechanism to communicate with the head end; the branch cavity communicates with the guide wire distribution mechanism; the guide wire distribution mechanism comprises a main channel communicating with the main cavity and a branch channel; one end of the branch channel communicates with the branch cavity, and the other end of the branch channel communicates with a distribution channel in the guide wire distribution mechanism; the distribution channel is provided with a branch guide wire outlet in the side wall of the guide wire distribution mechanism; and the included angle between the direction of the branch guide wire outlet and the branch channel is 60-120 degrees. The spherical double-cavity micro-catheter is simple in structure and novel in conception, and is low in operation difficulty, good in auxiliary effect, high in operation success rate and remarkable in effect when being applied to a reverse guide wire operation of a PCI branch lesion operation.

The invention discloses a multipolar radiofrequency ablation catheter which is applicable to being used in renal artery vessels, comprising three parts of a catheter ablation working end, a main body section and a handle. The catheter ablation working end adopts a kinematic pair mechanism structure. The kinematic pair mechanism comprises a plurality of sets of single-unit front and back crank kinematic pairs. Each single-unit front and back crank kinematic pair is connected with a set of electrode tube and convex ring electrodes to constitute an independent or linked single-unit catheter ablation working end. A plurality of convex ring electrodes are evenly distributed the periphery of vessels and are closely attached to the inner wall of renal artery for mapping and ablation. The catheter of the invention has the advantages of simple and convenient operation, flexible adjustment, precise location of ablation, real-time monitoring and adjusting of ablation temperature and radio-frequency power, reducing treatment complication and lowering the surgical risk.

A catheter of the invention includes an elongated flexible tubular main body; a plurality of manipulation wires inserted through the tubular main body and having tips connected to a distal part of the tubular main body; a manipulation-part main body provided at a base end of the tubular main body; and a bending manipulation part. The bending manipulation part has an engagement part engaging with base ends of the manipulation wires, and individually applies pulling force to the plurality of manipulation wires through pulling operations so as to bend the distal part of the tubular main body. The bending manipulation part is provided so as to be movable with respect to the manipulation-part main body. The path lengths of the plurality of manipulation wires from the tips thereof to the engagement part are simultaneously increased or decreased when the bending manipulation part and the manipulation-part main body move relative to each other.

The anti-embolism carotid artery forming system comprises a stent conveying sheath, a self-expanding stent and a stent propelling catheter, and the stent conveying sheath is provided with a near end, a far end and an inner cavity; the self-expanding stent has an unexpanded state and an expanded state; the stent advancing catheter is provided with a catheter shaft, and an expandable component is installed at the far end of the catheter shaft. The stent delivery sheath is provided with the stent propelling catheter, and the stent propelling catheter is sleeved with a sliding sleeve block matched with the stent propelling catheter. The stent has the beneficial effects that embolism protection can be formed through the integrated expansion stent filter screen during stent implantation of vascular endoplasty for treating carotid artery stenosis, the operation is simple and convenient, and the expansion breathable film expands on the expansion stent filter screen to provide completely reliable blockage of the carotid artery; the expansion breathable film in the stent provides more effective fixation for the expansion breathable film, and catheter operation in subsequent steps is simplified.

The invention discloses a guiding wire / catheter operating device at the main end of a robot for vascular interventional surgery, which can separately feed back the axial force and the circumferential force, and can imitate the actual surgical operation habits of a bionic doctor. The device includes a box body, a brushless DC motor, a transmission assembly, an electromagnetic connector and an axial force feedback assembly; the brushless DC motor is connected to the active part of the electromagnetic connector through the transmission assembly, and its follower is connected to the fixing part of the sleeve telescopic assembly. section, the telescopic section of the sleeve telescopic assembly extends out of the box to connect the guide wire / conduit; when it is necessary to provide circumferential sensing, the active part and the driven part of the electromagnetic connector are attracted, so that the brushless DC motor drives to the sleeve through the transmission assembly. The telescopic component provides circumferential resistance, and then realizes the circumferential force feedback function; when it is necessary to provide axial sensing, the positive pressure generating component in the axial force feedback component generates displacement, and drives the rubber block component and the telescopic section in the sleeve telescopic component to generate an axial force. Friction to provide axial resistance and realize axial force feedback function.

The invention provides a debridement device for the general surgery department. The debridement device comprises a box body. A first clapboard and a second clapboard are arranged in the box body; the first partition plate and the box body define a water discharging cavity; a medicine containing cavity is defined by the second partition plate and the box body. An operation cavity is defined by the first partition plate, the second partition plate and the box body; a catheter is arranged in the operation cavity; a lead screw is arranged at the top end of the bottom of the box body; fixing rods are in transmission connection with the outer end surfaces of the screws; stirrers are arranged at the upper ends of the fixing rods; the fixed rod is rotationally connected with a sleeve with one end in the guide pipe; the sleeve is connected with a liquid outlet pipe; the other ends of the liquid outlet pipes are respectively arranged in the water discharging cavity and the medicine discharging cavity; the upper end of the sleeve is fixedly connected with a nozzle; the nozzle is communicated with the sleeve through a spray pipe; the conduit is of a hollow structure; the lower end of the conduit is provided with an opening communicated with the hollow structure; a spring is arranged in the conduit and at the lower end of the sleeve; the hollow structure of the catheter is provided with the connecting pipes communicated with the water discharging cavity and the medicine discharging cavity respectively, liquid medicine and clear water can be mixed for debridement, cleaning and disinfection of a wound, and the labor amount of medical staff is reduced.

The invention provides a catheter delivery method, a catheter is fixedly connected to a catheter operator, and a controller controls the catheter operator to move; a guide wire is arranged on a guidewire operator and is arranged in the catheter in a penetrating manner; the guide wire operator can clamp or loosen the guide wire, and the controller controls the guide wire operator to move; and thecontroller limits the distance between the catheter operator and the guide wire operator for delivery of the catheter and maintains the guide wire between the catheter operator and the guide wire operator unbent. According to the catheter delivery method provided by the invention, no guide wire anti-bending device is arranged between a catheter holder and a guide wire holder, and the catheter is delivered by virtue of the toughness of the guide wire; and the distance between the catheter holder and the guide wire holder is limited within a certain range, the catheter operator and the guide wire operator cooperate with each other to achieve catheter delivery, and meanwhile it is guaranteed that the guide wire is not bent in the delivery process.

The invention discloses a foreign body snare for vascular interventional therapy. The foreign body snare comprises a catheter and a guide wire. The catheter comprises an operation catheter and a stretching catheter; a rotating shaft and an adjusting mechanism are arranged at the joint of the operation catheter and the stretching catheter; the guide wire penetrates through the operation catheter and extends into the catheter inner tube, and the end, extending out from the stretching catheter, of the guide wire, is further connected with a metal net; the stretching front end opening of the stretching catheter is an inclined opening. The opening at the stretching front end of the stretching catheter is the inclined opening, so that the contact area with an inferior vena cava filter is increased, the inferior vena cava filter is conveniently grabbed, the stretching catheter is adjusted within a certain angle range in cooperation with the adjusting mechanism, and the inferior vena cava filter is conveniently taken back.