82 results about "Catheter guide wire" patented technology

A method for accessing a blood vessel using a catheter insertion device. The catheter insertion device includes a housing, a needle, a catheter, a guidewire, and a thumbwheel. The thumbwheel is rotatably fastened at a front end of the housing and accessible through an opening in the housing. The guidewire is coupled to the thumbwheel such that an axis of rotation of the thumbwheel is perpendicular to the guidewire and rotation of the thumbwheel advances the guidewire through the lumen of the needle. The method includes preparing the catheter insertion device, inserting a tip of the needle and distal end of the catheter into a blood vessel, advancing the guidewire out of the lumen of the needle into the blood vessel by holding the housing and rotating the thumbwheel, furthering the distal end of the catheter over the guidewire, and removing the needle and the guidewire from the catheter.

Methods, apparatuses, and systems for performing a valve replacement or repair. Apparatuses may include systems and may include an outer catheter, one or more interchangeable inner catheters, a guidewire and an expandable chordae tendinae deflector. Also described herein are rapid pacing sheaths that may be used with any of these apparatuses and methods.

The invention belongs to the technical field of medical instruments. In order to solve the problem that an existing device is tedious in operation, the multifunctional automatic injection system is designed and comprises an injector, an automatic injection device and an auxiliary Y valve, and the auxiliary Y valve is connected with a catheter, a guide wire and the automatic injection device. Therefore, the automatic injection device can inject the contrast agent, the medicine or the embolic agent in the injector, the contrast or treatment efficiency is improved, meanwhile, the guide wire can be rapidly fixed, the guide wire does not need to be completely withdrawn out of the catheter, the surgical operation difficulty is reduced, and the surgical time is shortened.

The utility model provides a delivery catheter and implant delivery system.The delivery catheter comprises a catheter body, a guide wire cavity tube, a near-end supporting piece, a far-end supporting piece, a balloon body and a far-end structure, the guide wire cavity tube is arranged in the catheter body in a penetrating mode, the far end of the guide wire cavity tube extends out of the far end of the catheter body, the near-end supporting piece is arranged at the far-end end of the catheter body, and the balloon body is arranged in the far-end structure. The near-end supporting piece is arranged at the near-end part of the guide wire cavity tube, the far-end structure is arranged at the far-end part of the far-end supporting piece, the balloon body is arranged on the outer sides of the near-end supporting piece, the far-end supporting piece and the far-end structure in a sleeving manner, and the implant is arranged on the balloon body and is axially limited between the near-end supporting piece and the far-end supporting piece in the conveying process; the wall thickness of the near-end supporting piece at the far-end end is the thickest, and / or the wall thickness of the far-end supporting piece at the near-end end is the thickest, so that the near-end supporting piece can better abut against an implant, and axial movement and even movement of the implant are avoided.

This invention discloses a rapid online dynamic magnetic resonance imaging (MRI) reconstruction method based on subspace tracking, relating to the field of medical image processing technology. The method includes: Step 1, obtaining a coil sensitivity map from pre-scanned full-sample data and constructing an encoding operator using an undersampling template; Step 2, decomposing the image into two components and sequentially solving for the component values ​​corresponding to each frame, thereby rapidly acquiring the image of the current frame. This method can be applied to interventional procedures guided by MRI images. It achieves rapid scanning through undersampling and rapid reconstruction of undersampling data using the proposed online reconstruction algorithm. Physicians can promptly determine the position of catheters, guidewires, or puncture needles during intervention based on the rapidly reconstructed MRI image.

The present invention provides an interventional catheter assembly for cardiovascular and cerebrovascular care, which relates to the technical field of medical devices, comprising: a catheter, a guidewire, a first sleeve, a first expandable stent, at least one second sleeve and at least one second expandable stent; the sleeve is sleeved on the outside of the guidewire and located in the catheter; the expandable stent is arranged on the sleeve and compressed in the catheter; a plurality of mounting rings are arranged in the first sleeve and one of the mounting rings is fixedly connected to the guidewire, while two mounting rings on both axial sides are fixedly connected to the first sleeve; the two mounting rings are respectively fixedly connected to the two axial ends of the second sleeve and the mounting ring away from the first sleeve is fixedly connected to the guidewire; when the first sleeve and the second sleeve are separated from the catheter and then pass through a curved blood vessel, under the action of the guidewire and the mounting ring, the curved first sleeve is longer than that in a straight state, and the guidewire drives the second sleeve to contract toward the first sleeve, so that the second expandable stent further expands and can be offset toward the outer bend of the blood vessel, so that it is close to the blood vessel wall to prevent thrombus from escaping.

This product is a right-handed medical device for inserting long objects, comprising a main body, an insertion tube provided at the tip of the main body, and a base support provided at the base end of the main body. When using this product, as shown in the reference front view illustrating the state of use, the main body is grasped with the right hand by placing the fingers other than the thumb on the finger rest of the main body, and a long medical object (e.g., a microcatheter, guidewire, etc.) is inserted into the lumen of a medical device (e.g., a connector with a hematemesis valve, catheter hub, etc.) by using the thumb to feed it.

The present invention provides an elastic catheter guide wire clip with an internal spring and its working method in the technical field of interventional surgical robots, including a left clip rear sleeve, a left clip front sleeve, and a right clip base. The left clip rear sleeve is connected to the left clip front sleeve, and the inner cavity of the left clip rear sleeve is communicated with the inner cavity of the left clip front sleeve. A push cap member is provided in the left clip rear sleeve, and a left clamping plate is provided in the left clip front sleeve. The push cap member is arranged corresponding to the left clamping plate. A right clamping plate is provided in the right clip base. Elastic members for resetting are respectively sleeved on the right clamping plate and the left clamping plate. The other end of the left clamping plate is arranged corresponding to the right clamping plate. The left clamping plate is arranged to move by the push of the push cap member. After the left clamping plate moves, it clamps the guide wire with the right clamping plate. The present invention improves the elastic catheter guide wire clip, makes the spring internal, so as to improve the reliability of the clamp for clamping the catheter guide wire, improve the safety during use, and also make the instrument more beautiful.

The utility model provides an internal jugular vein indwelling catheter guide wire fixator, belongs to the field of medical instruments, and aims to solve the problem that wearing is inconvenient to adjust according to the size of the neck of a patient, the internal jugular vein indwelling catheter guide wire fixator comprises a telescopic band and a clamping groove, the clamping groove is formed in the telescopic band, and a second clamping plate is rotationally connected to a connecting plate. The telescopic belt is arranged; when the wearing tightness of the telescopic belt is adjusted, a pull rod on a mounting frame can be pulled to drive a limiting plate to move, a clamping rod can be taken out of a clamping groove in the telescopic belt and retracted into the mounting frame when the limiting plate moves, and a spring can be extruded when the limiting plate moves; the telescopic belt can be pulled to move on the mounting frame and adjusted according to the size of the neck of a patient, after adjustment is completed, the pull rod is loosened, the limiting plate and the clamping rod are driven to reset under pushing of the spring, the clamping rod is clamped in the clamping groove in the telescopic belt for limiting, and the wearing and using comfort can be improved.

The utility model relates to the technical field of medical instruments, and discloses a puncture needle suite for clinical puncture catheterization, which comprises a puncture needle used for human body puncture and forming a puncture channel, a limiting part used for being fixed with a human body is sleeved on the outer side of the puncture needle, and the limiting part can slide on the outer side of the puncture needle; a guide wire which is fed into a human body and is retained in the human body as a puncture guide piece after the puncture needle is drawn out is arranged in a needle tube of the puncture needle, a retention catheter fed into the human body is sleeved outside the guide wire, and one end, extending out of the retention catheter, of the guide wire is inserted into the connecting part. The puncture needle can be stably positioned through the limiting part of the kit, pain of a patient caused by the puncture needle can be relieved, and the success rate and efficiency of puncture are improved; the guide wire can be prevented from being mistakenly fed into the body of a patient, the two ends of the drawn-out guide wire are connected, the occupied space of the guide wire is reduced, the guide wire is prevented from being thrown, and the safety of medical staff is protected.

The present application belongs to the field of minimally invasive vascular intervention surgery, and discloses a hand device of a humanoid interventional robot, which comprises: a left hand device for clamping and fixing a surgical instrument; a right hand device for pushing and rotating the surgical instrument; and a disposable consumable. The left hand and right hand devices cooperate to complete the pushing and rotating of a catheter guide wire, the injection of contrast medium, and the pressure pump pressurization and release of a balloon and a stent catheter in an interventional surgery. When clamping a medical instrument in the surgery, the robot can also sense the clamping force, and in the process of pushing the catheter guide wire, the robot can sense the real-time pushing resistance, so that the main operation actions in the interventional surgery treatment can be completed.

The present invention relates to a vascular interventional surgical robot with a force feedback function, which consists of a master-end mechanism and a slave-end mechanism. The master-end mechanism includes a display, a master-end control box and a master-end console, and the master-end control box is embedded in the master-end console; the master-end control box is provided with a catheter forward and backward control knob, a guidewire rotation control knob, and a guidewire forward and backward control knob, which respectively realize the catheter forward and backward control, the guidewire rotation control, and the guidewire forward and backward control, and the catheter and guidewire forward and backward control knobs are respectively connected to the catheter force feedback device and the guidewire force feedback device; the slave-end mechanism includes an operating table, a bracket and a slave-end control box, the bracket is fixed on the operating table, and the slave-end control box is fixed to the end of the bracket; the present invention can truly collect the force conditions of the guidewire and the catheter in the blood vessel, and map them to the master-end operating mechanism, restoring the doctor's on-the-spot feeling during the operation, thereby reducing the surgical risk and improving the surgical accuracy.

This invention discloses a cerebrovascular interventional puncture positioning device, comprising a support and adjustment arm, a limb limiting component, a connecting rod, a ball head seat, a ball head shaft, and an elastic clamping mechanism. The limb limiting component is fixedly disposed at one end of the support and adjustment arm for fixing the limb. One end of the connecting rod is slidably disposed on one side of the limb limiting component, and the other end is threadedly connected to a fastening nut. The ball head seat is fixedly disposed at the end of the connecting rod away from the limb limiting component, and a ball head groove is formed at its bottom. The ball head end of the ball head shaft is movably disposed in the ball head groove. A locking mechanism is provided on one side of the ball head seat for fixing or releasing the ball head end. The elastic clamping mechanism is fixedly disposed at the connecting end of the ball head shaft for clamping and fixing the catheter or guidewire assembly. This invention achieves precise positioning and clamping of the catheter and guidewire and stable fixation of the patient's limb through the integrated design of elastic clamping and limb limiting, resulting in accurate positioning and convenient operation.

The invention relates to an ablation guide structure and an ablation device, and the ablation guide structure comprises a spiral extension part which is used as a treatment part, is made of a deformable material, and is movably inserted into a blood vessel during use; the electric conductors are distributed along the spiral extension part at intervals, are combined with the spiral extension part and are electrically connected with a power supply for ablation treatment. Due to the arrangement of the spiral catheter / guide wire far-end structure and the multiple electrodes, the action range of ablation treatment is greatly widened; compared with an existing mainstream micro catheter (with a linear type and a single electrode mostly), the spiral far-section structure can be matched with multiple electrodes at different positions to cooperate to form an ellipsoidal damage range during ablation, the ablation range is greatly widened, and effective damage can be caused to target myocardial cells; the spiral guide wire structure is suitable for blood vessels which are narrower and have more complex passages, and the surgical range is greatly widened.

To provide a low-invasive medical device such as an operable catheter, a guide wire, a coil, or another elongated flexible member.SOLUTION: A medical device includes an elongated member having a proximal end, a distal end, and a body extending between the proximal end and the distal end. The elongated member includes a tubular portion having a plurality of slots extending in a wall of the tubular portion. The plurality of slots include a first slot. The elongated member further includes fillers arranged in the slots, respectively. The fillers include a first filler including a sponge-like material arranged in the first slot.SELECTED DRAWING: Figure 5

The utility model relates to the technical field of urethral calculus removing, in particular to a urethral calculus removing device which comprises a catheter, a guide wire, a mounting block and two clamping arc plates. The guide wire positioning device has the advantages that opening and closing of the sliding grooves can be controlled by pushing and pulling the sliding plate through the top plate, then the positioning teeth can flexibly slide in the fixing plate through the sliding grooves, when the sliding plate slides along the sliding grooves and is tightly attached to the guide wire, the sliding plate can be clamped between the two positioning teeth to fix the guide wire, and then positioning of the guide wire is achieved; according to the calculus removing device, the position of the clamping arc plate can be fixed to clamp the calculus, the situation that the guide wire slides back and forth after the calculus is clamped by the clamping arc plate is avoided, then the calculus is more stably clamped by the clamping arc plate, calculus removing is more accurate and rapid, and pain of a patient in the calculus removing operation process can be greatly relieved.

The application provides an open gear type guide wire clamp capable of continuous rotation in the technical field of interventional surgery robots, and an interventional surgery robot, which comprises a gear assembly, a connecting flange and a clamp head part, the gear assembly is connected to the clamp head part through the flange assembly, the gear assembly comprises an open driven gear, and the open driven gear is provided with an open sliding bearing; the open driven gear rotates around the open sliding bearing, the open sliding bearing drives the clamp head part to rotate, the clamp head part clamps a guide wire, the guide wire rotates, and the guide wire is installed or taken out through the open driven gear. Through the open gear structure, the guide wire is conveniently installed and taken out, the gear drives the guide wire to rotate, the open sliding bearing supports the open gear to rotate, the overall open type feature is maintained, one driving gear and two idler gears are used to drive the open gear, it is ensured that the driving gear can be transmitted to the terminal open gear through the idler gears at any angle position, and the function of continuously rotating the catheter guide wire for one whole circle is realized.

Mechanical fingers for clamping catheters, guild wires, and the like equipment for vascular intervention include a left clamping panel, a right clamping panel, left gathering pieces, right gathering pieces, a linear-propelling mechanism, and a frame. The linear-propelling mechanism is arranged on the frame. The left clamping panel and the right clamping panel are oppositely arranged, and are each arranged on the linear-propelling mechanism. The left gathering pieces and the right gathering pieces are arranged on the left clamping panel and the right clamping panel, respectively. The linear-propelling mechanism drives the left clamping panel and the right clamping panel to move towards or move away from each other. The mechanical fingers can realize adaptive clamping for intervening equipment in a widely varying diameter range. The clamping surfaces of panels in the mechanical fingers are provided with grid-and-stripe microstructures and are made from resilient materials.

The application relates to a double-catheter guide wire cooperative docking based occluded blood vessel recanalization intervention device, a first set of components comprising: a first catheter, a first guide wire or a third guide wire being inserted into the first catheter; an end of the first catheter being provided with a magnet ring, the inner diameter of the magnet ring being greater than or equal to the outer diameter of the first guide wire; or, an end of the third guide wire being provided with a magnet ring, and the outer diameter of the magnet ring being smaller than the inner diameter of the first catheter; a second set of components comprising: a second catheter and a second guide wire in the second catheter; an end of the second catheter being provided with a deflection structure capable of being attracted to the magnet ring, the deflection structure being deflected under the action of the magnetic attraction force of the magnet ring to make the working end of the second guide wire passing therethrough to be deflected at an angle and be directed towards the first catheter port; and / or the working end of the second guide wire being provided with a metal block capable of being attracted to the magnet ring, the outer diameter of the metal block being smaller than or equal to the inner diameter of the second catheter. The occluded blood vessel recanalization is easy to realize, and the operation opening success probability is effectively improved.

The invention relates to the technical field of medical apparatus and instruments, and provides an auxiliary catheter conveying device for coronary interventional therapy in order to solve the problems that in a coronary interventional operation, an operative limb is not stably fixed, catheter conveying adjustment is inconvenient, and a doctor is prone to fatigue during operation, and the auxiliary catheter conveying device for coronary interventional therapy comprises an operative limb fixing and supporting mechanism and a catheter conveying and supporting mechanism, and the operative limb fixing and supporting mechanism comprises a fixing base and a supporting platform rotationally connected with the fixing base; a supporting pad is embedded between the supporting platform and the fixed base and is configured to properly fix the puncture side arm of the patient and keep a preset body position, and meanwhile, operation support is provided for a doctor; and the catheter conveying mechanism is arranged above the operative limb fixing and supporting mechanism and is configured to provide a targeted conveying channel for a catheter, a guide wire and related instruments in the coronary intervention operation. The arm and the wrist on the puncture side can be stably fixed, and meanwhile the wrist is kept in a comfortable body position of slight back stretching; the extension length and the far-end bending angle of the extension catheter can be flexibly adjusted; meanwhile, support can be provided for operation of doctors.

The utility model discloses a protection device, which belongs to the field of medical instruments and comprises a conveying catheter, a guide wire, a protection umbrella and a drawing wire, the conveying catheter is provided with a main cavity, and the far end of the conveying catheter can be elastically deformed; the guide wire is arranged in the main cavity in a penetrating mode, a take-up frame is further fixed to the periphery of the middle of the guide wire, and a wire take-up hole is formed in the take-up frame. The protective umbrella can be elastically deformed, a plurality of filtering holes which are uniformly distributed at intervals are formed in the protective umbrella, and a guide hole which is arranged outside the guide wire in a matched and sleeving manner is further formed in the middle of the protective umbrella; the far end of the drawing wire is fixedly connected with the near end of the protective umbrella, the drawing wire penetrates through the wire collecting hole, and the near end of the drawing wire extends out of the near end of the main cavity. The protective umbrella has the advantages that the protective umbrella can move on the guide wire through the drawing wire, the far end of the conveying catheter can be elastically deformed to change the inner diameter, smooth release and recovery of the protective umbrella are facilitated, the protective umbrella can be elastically deformed to change the outer contour, and the protective umbrella can be supported in a blood vessel and does not move when not subjected to the acting force of the drawing wire.

The present invention relates to an interventional surgical robot and its clamping device in the field of medical robot technology, including a base, a driving mechanism, a handle clamping mechanism, and a catheter and guide wire clamping mechanism; the driving mechanism, the handle clamping mechanism, and the catheter and guide wire clamping mechanism are all installed on the base, and the driving mechanism is respectively drivingly connected to the handle clamping mechanism and the catheter and guide wire clamping mechanism; the driving mechanism drives the handle clamping mechanism and the catheter and guide wire clamping mechanism to operate synchronously, and the time for the handle clamping mechanism to reach the handle clamping position is different from the time for the catheter and guide wire clamping mechanism to reach the catheter and guide wire clamping position. The present invention can simultaneously drive the handle clamping mechanism and the catheter and guide wire clamping mechanism through the same driving mechanism, and can realize the clamping and switching of the handle and the catheter and guide wire without replacing the fixture, improving the safety factor and operation efficiency of the surgical operation.

The present invention discloses an automated delivery device with a precise delivery function, comprising a catheter, a guidewire, and a sheath, as well as a drive device connected to the catheter and / or guidewire and a control device connected to the drive device, so as to control the drive device to drive the catheter and / or guidewire to move; a delivery device for delivering liquid and capable of detecting catheter air pressure is provided within the sheath, the control device is connected to the delivery device so as to receive air pressure signals from the delivery device and control the delivery of liquid by the delivery device; and the control device is connected to a CT scanner so as to receive CT scan data. The automated delivery device with a precise delivery function provided by the present invention has a wide range of applications and has the advantages of high precision, intelligence, and good delivery performance.

Herein disclosed is a robot apparatus having two or more robot units, each robot unit is configured to maneuver on an intracavity surgical device, such as a catheter, a guide wire, or tools for laser ablation. Also included is a reciprocating conveyor having a motion converter, such as a scotch yoke, coupled with a rail slider to produce linear reciprocating movements to bring the robot units back and forth from and towards a patient. A load measuring device is also included to sense both the axial force and the torque exerted on the surgical device and based on the real time load measurement, to control the scotch yoke and the robot unit more accurately for inserting the intracavity surgical device into or withdrawing it from the surgical subject.

A driving apparatus for delivering a catheter guide wire includes a first driving mechanism, a second driving mechanism and a third driving mechanism. In the initial delivery stage, a catheter between the first driving mechanism and the second driving mechanism is in a bent state; during the first stage of delivery, the first driving mechanism delivers the catheter and a guide wire together, and in the continuous delivery process, the bending degree of the catheter between the first driving mechanism and the second driving mechanism gradually decreases; during the second stage of delivery, a detection mechanism detects whether the catheter between the first driving mechanism and the second driving mechanism is straightened, and if so, the third driving mechanism drives the second driving mechanism to move in the delivery direction of the catheter and the guide wire.

The invention provides an interventional operation system, an interventional operation system control method, computing equipment and a computer readable storage medium. The interventional surgical system includes: a catheter that moves in the interventional surgical system; the guide wire moves in the catheter; the catheter position detection unit is used for detecting the current actual position of the catheter; the guide wire position detection unit is used for detecting the current actual position of the guide wire; a control unit for determining a current desired motion characteristic of the catheter and a current desired motion characteristic of the guidewire; the catheter driving unit is used for driving the catheter according to the current expected motion characteristic of the catheter; and the guide wire driving unit is used for driving the guide wire according to the current expected motion characteristic of the guide wire. According to the application, the movement of the catheter and the guide wire can be coordinated, so that the medical staff can operate the catheter and the guide wire more conveniently and accurately.

The present invention provides a device for measuring the rotation angle of a catheter guidewire and an assembly method thereof. The device for measuring the rotation angle of a catheter guidewire includes a laser transmitter, a laser receiver, a base, and a light shielding disc; a catheter guidewire fixing position is provided at the center of the light shielding disc, and the catheter guidewire passes through the light shielding disc through the catheter guidewire fixing position, and the catheter guidewire is fixedly connected to the catheter guidewire fixing position; the light shielding disc includes a light shielding portion and a light transmitting portion; the light shielding portion and the light transmitting portion are alternately distributed along the circumference of the catheter guidewire fixing position; as the light shielding disc rotates along its own center, the light of the laser transmitter switches between the following two states: the light of the laser transmitter is blocked by the light shielding portion of the disc; the light of the laser transmitter passes through the light transmitting portion of the disc and is received by the laser receiver. The present invention realizes the measurement of the rotation angle of the catheter guidewire by setting the light shielding disc, the laser transmitter, and the laser receiver, and utilizing the high and low level switching of the laser receiver signal line.

The invention relates to the field of anesthesia instruments, in particular to an injection device for transvascular great saphenous vein swelling anesthesia liquid. Comprising a catheter, a guide wire and an injection needle, the guide pipe comprises a first supporting section and a second supporting section which are integrally manufactured, and the second supporting section is provided with a supporting part and a turning part; the catheter is provided with a first catheter cavity and a second catheter cavity which are not communicated with each other; the supporting part and the first supporting section form a supporting interval in the direction perpendicular to the reference straight line. A guide wire and a catheter are arranged in a target vein of the lower limb of a patient through a great saphenous vein, and a supporting distance jointly formed by a supporting part and a first supporting section of the catheter is changed through the guide wire; in the target vein, a part of the inner wall of the target vein is deformed through the catheter with the increased supporting distance, and in the process that the injection needle conducts the puncturing action from the interior of the target vein, due to the fact that the number of nerves of blood vessels is far smaller than the number of nerves of skin, pain felt by a patient can be remarkably reduced.

Apparatuses, including systems, for performing a valve replacement or repair. Apparatuses may include an outer catheter, 2024 / 148366 one or more interchangeable inner catheters, a guidewire and an expandable chordae tendinae deflector. The outer catheter and inner catheter may be configured to engage with to prevent gaps. The inner catheter may include a chordae tendinae deflector. The outer catheter may be configured as a rapid pacing sheath that may be used with any of these apparatuses.WO