35 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 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.

An obstruction detection system for a robotic catheter system including a robotic catheter manipulator assembly including one or more catheter manipulation bases and one or more sheath manipulation bases. Each manipulation base may be generally linearly movable on one or more tracks relative to the robotic catheter manipulator assembly. The obstruction detection system may include one or more obstruction detection sensors disposed on the track or on the manipulation bases to detect an obstruction along a path of motion of one or more manipulation bases. A software system may be provided for monitoring movement of the catheter and sheath manipulation bases, and / or a status of the obstruction detection sensors.

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 desiredlocation and performing the therapy are still challenging. To meet this challenge, the robot presents an MRI-conditional catheter robotic system that integrates intra-operative MRI, MR-based trackingunits 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.

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.

A catheter assembly includes a hollow catheter; a catheter hub configured to fix and hold the catheter; an inner needle including a needle tip and configured to be removably inserted through an inside of the catheter; a needle hub configured to fix and hold the inner needle; and a catheter operation member capable of moving the catheter relative to the inner needle. The catheter operation member includes a holding portion configured to directly hold the catheter in a detachable manner.

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 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 invention discloses a catheter operation device for a minimally invasive surgery. The device comprises a first coupler, a cover plate body and a control box. One side of a bottom board of the cover plate body is in driving connection with a second speed reducer. The bottom end of the second speed reducer is snapped onto the first coupler. One end of the first coupler is connected with a first driving shaft. One end of the first driving shaft is in sleeve joint with an operation handle. One side of the surface of the cover plate body is provided with a connection board. One end of the connection board is snapped onto a first speed reducer. One end of the first speed reducer is connected with a driving mechanism, one end of which is snapped onto an outer sleeve. The other end of the first speed reducer is connected with a second driving shaft through a pipeline. One end of the second driving shaft is provided with a bearing seat. The catheter operation device for the minimally invasive surgery has the following beneficial effects: the device is reasonable in structure and good in application effect; by arranging a pressure sensor, operation force of the operation handle during application can be detected well; and usage effect is improved.

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 vascular intervention operation robot guide wire and catheter control device. The device includes a push mechanism, a rotation and twisting mechanism and a control system. The push mechanism comprises a fine adjustment mechanism and a coarse adjustment mechanism; the coarse adjustment mechanism includes two spaced guide tube brackets, a synchronous pulley drive mechanismdisposed between the two guide tube brackets, and first clamping devices driven by the synchronous pulley drive mechanism; the fine adjustment mechanism includes a fixation bracket, a mobile bracket disposed between one guide tube bracket and the fixation bracket, a screw-nut assembly which is fixed on the fixation bracket and can drive the mobile bracket to move back and forth relative to the fixation bracket, and a second clamping device disposed on the mobile bracket; and the rotation and twisting mechanism includes a gear drive mechanism which is disposed on the mobile bracket and is fixedly connected to the second clamping device to drive the second clamping device to rotate. The vascular intervention operation robot guide wire and catheter control device enables the push efficiency and precision of a guide wire and catheter to be improved, enables the connection between a whole system and external devices to be more concise, and has the advantages of easy operation, convenient cleaning and disinfection.

The invention discloses a thrombus extraction device which is characterized by comprising a catheter, an operator and a dragging device, the manipulator is fixedly connected to the tail end of the catheter, one end of the dragging device is arranged on one side of the manipulator, and the other end of the dragging device penetrates into the manipulator from the side edge of the manipulator and penetrates out of an inner cavity of the catheter. The head end of the catheter is fixedly provided with a sleeving device, the tail end of the operator is provided with an adjusting turncap, the sleeving device is connected with a guide core, the inner side wall of the adjusting turncap is provided with a fixing column, the near end of the guide core is connected with the sleeving device, the far end of the guide core is movably connected to the adjusting turncap, and the far end of the guide core is fixedly provided with an external thread column. According to the device, by designing a sleeving and taking device with contraction claws and elastic nets arranged at intervals, thrombus can be completely wrapped, and the situation that in the dragging and taking-out process, the thrombus is omitted or falls out, so that the operation quality is poor, and even secondary damage is caused to a patient is avoided; compared with a traditional thrombus extraction device, thrombus extraction is more stable and faster.

The invention discloses an adjusting micro guiding pipe for cerebrovascular intervention. Micro guiding pipe comprises a guiding wire, a guiding pipe body, an avoiding hole, an application soft cushion, a clamping sleeve, a clamping plate, a threaded sleeve, a handle, an insulation sleeve, a push plate, a spring, an electric guiding block and an electromagnetic block. The micro guiding pipe has the advantages of simple operation and powerful function, the positioning and fixing of the guiding pipe can be firstly achieved through a guiding pipe fixing type design, the stability and safety in subsequent operation process is ensured, the positioning of a guiding wire in the guiding pipe can be achieved to improve the accuracy of treatment operation and reduce the operation burden of a medicalworker, and the purpose of excellent clinical popularization is finally achieved.