55 results about "Catheter guide wire" patented technology

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efficiency is improved, meanwhile, the guide wire can be rapidly fixed, the guide wire does not need to be completely withdrawn out of the catheter, the surgical operation difficulty is reduced, and the surgical time is shortened.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.

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 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 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 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.

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 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.

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

The invention relates to an occluded blood vessel recanalization intervention device based on cooperative butt joint of double catheters and guide wires, a first suite comprises a first catheter, and a first guide wire or a third guide wire is inserted into the first catheter; a magnet ring is arranged at the end of the first catheter, and the inner diameter of the magnet ring is larger than or equal to the outer diameter of the first guide wire. Or the end part of the third guide wire is provided with a magnet ring, and the outer diameter of the magnet ring is smaller than the inner diameter of the first catheter; the second suite comprises a second catheter and a second guide wire located in the second catheter; the end part of the second catheter is provided with a deflection structure which can attract the magnet ring, and the deflection structure enables the working end of the second guide wire penetrating through the deflection structure to deflect by an angle and face the port of the first catheter under the attraction action of the magnet ring; and / or, the working end of the second guide wire is provided with a metal block which can attract the magnet ring, and the outer diameter of the metal block is smaller than or equal to the inner diameter of the second guide wire. The device has the beneficial effects that occluded blood vessels are easy to revascularize, and the success probability of operation opening is effectively improved.

This invention belongs to the field of medical interventional devices and 3D reconstruction technology, and particularly relates to a method and system for 3D reconstruction of vascular lumens for vascular interventional surgery. The method includes: controlling the catheter / guidewire within the interventional vessel to move back and forth along the vessel axis to obtain pose data from dual magnetic sensors; obtaining the current frame tangent vector and the tangent vector of the previous adjacent frame based on the pose data, and constructing a local coordinate system; obtaining the axial projection distance based on the pose data and the tangent vector of the previous adjacent frame, and constructing an adaptive radius core equation to obtain the true radius of the vascular lumen; calculating the catheter / guidewire bending angle based on the current frame tangent vector and the tangent vector of the previous adjacent frame, and determining the effective wall-attached frames; generating a point cloud set of the vascular lumen based on the effective wall-attached frames and the true radius of the vascular lumen; and generating a 3D mesh from the point cloud set to complete the 3D reconstruction of the vascular lumen. The solution of this invention is adaptable to vascular interventional scenarios, requires no active rotation, requires no additional image assistance, is low in cost, and has high accuracy.

The invention discloses a medical intubation guide wire structure and a device with the structure, and relates to the technical field of medical instruments, the structure comprises a controllable bending part, the controllable bending part comprises a plurality of nodes of a cylindrical structure, and the nodes are sequentially connected through connecting ribs; the reinforcing wires are arranged in the nodes and the connecting ribs in a penetrating mode in the length direction of the controllable bending component; the nodes are provided with at least one first threading hole, and the orientations of the first threading holes between the nodes are in one-to-one correspondence; the diameters and the lengths of all the nodes and all the connecting ribs are configured to enable the controllable bending part to be bent in the connecting line direction of all the first threading holes; the controllable bending part is sleeved with a protection pipe. The multiple nodes are connected in series through the connecting ribs to form a split snake bone structure, controllable bending action can be achieved, and convenience is provided for daily medical catheter guide wire work.

The embodiment of the invention discloses a catheter and guide wire segmentation model training method, a catheter and guide wire segmentation method and equipment, and relates to the field of model training. Inputting the plurality of sample images into an initial catheter and guide wire segmentation model for training, and obtaining the catheter and guide wire segmentation model until the training is completed; wherein in the training process, feature coding processing is carried out on the sample image through an efficient neural network encoder adopting a Swsh activation function, and decoding processing is carried out on a feature coding processing result through a plurality of task decoders at the same time; and adjusting parameters of the initial catheter guide wire segmentation model through a comprehensive loss function based on a decoding processing result.

A co-registration system includes a processor circuit that generates and displays a first co-registration reliability indicator based on the status of an x-ray imaging device and a second co-registration reliability indicator based on the speed of an intravascular catheter / guidewire. The processor circuit receives, from the x-ray imaging device, x-ray images of a blood vessel while the intravascular catheter / guidewire moves through the blood vessel. The processor circuit receives, from the catheter / guidewire, intravascular data representative of the blood vessel while the catheter / guidewire moves through the blood vessel. The processor circuit co-registers the intravascular data to an x-ray image received from the x-ray imaging device. The processor circuit also receives a signal representative of an inactive status of the x-ray imaging device during the movement of the catheter / guidewire. The processor circuit then displays the first reliability indicator representative of the x-ray fluoroscopy device status and may indicate that co-registration is not possible. The processor circuit also determines a speed of the catheter / guidewire and displays a second indicator representative of the speed of the catheter / guidewire being too fast for reliable co-registration.

The invention relates to the field of medical apparatus and instruments, in particular to a hand support type catheter pushing robot which comprises a first shell, an arc-shaped seat, a first outer box, a bidirectional driving assembly and a second shell. The device not only has basic pushing and withdrawing functions of a catheter and a guide wire, but also integrates an intermittent rotating assembly and an auxiliary injection assembly. And the intermittent rotation function simulates the twisting action of a doctor during manual operation. And the auxiliary injection assembly can automatically or semi-automatically inject a contrast agent or a therapeutic drug after the catheter is in place, so that the combination of diagnosis and treatment functions is realized.

The application discloses an electrically-controlled memory alloy controlled steering tubular member and application thereof, and relates to the technical field of medical treatment, in particular to an electrically-controlled memory alloy controlled steering tubular member and application thereof. The electrically-controlled memory alloy controlled steering tubular member comprises a catheter body and two electrodes, the catheter body comprises a memory alloy pipe, one end of one electrode is connected with the head end of the memory alloy pipe and the electrode is defined as a head electrode, one end of the other electrode is connected with the tail end of the memory alloy pipe and the electrode is defined as a tail electrode, the memory alloy pipe is a hollow pipe which is wound by a single strand or multiple strands of memory alloy wires, the hollow pipe is a hollow capillary tube similar to a spring pipe, the other end of the catheter body is directly or indirectly connected with a male connector, and the other ends of the two electrodes are simultaneously electrically connected with the male connector. The memory alloy pipe is powered, the temperature of the memory alloy pipe is switched between phase transition temperatures through electric heating, the controlled motion function is realized, and different requirements are met, for example, the electrically-controlled memory alloy controlled steering tubular member is applied to the fields of medical treatment, such as medical electrically-controlled catheters, guide wires and underground exploration, which need to be operated in narrow spaces.

The embodiment of the application belongs to the technical field of artificial intelligence, and relates to an interventional surgery robot catheter guide wire action control method and a related device thereof. The method comprises the following steps: obtaining target control information; determining a target controlled object according to the target control information, and judging whether the target controlled object meets a preset safety distance condition and a preset low-speed following condition; if the target controlled object meets the preset safety distance condition and the preset low-speed following condition, controlling the target controlled object to perform low-speed following movement according to a first preset optimization parameter; and if the target controlled object meets the preset safety distance condition but does not meet the preset low-speed following condition, controlling the target controlled object to perform high-speed following movement according to a second preset optimization parameter. The application can reduce the noise of catheter guide wire movement and is more conducive to surgery.

The application provides a clamp capable of clamping and continuously rotating a catheter guide wire, comprising a chuck device and a driving device; the chuck device is used for clamping a clamped member, and a chuck clamping button for switching an open state and a clamping state is arranged on the chuck device; the driving device comprises a clamping motor and a connecting rod mechanism, the clamping motor is in transmission connection with the connecting rod mechanism, and the connecting rod mechanism is in transmission connection with the chuck clamping button. The application provides power clamping of the catheter guide wire through a lead screw nut mechanism in the driving device, guarantees the reliability of clamping, separates the lead screw nut mechanism from the chuck device, thereby leaving space for continuous rotation of the chuck device, so as to realize continuous rotation of the catheter guide wire, and the application has the advantages of simple structure, separate operation of clamping action and rotating action, high clamping efficiency, sufficient continuity of rotating the catheter guide wire, simple overall operation, and greatly improved operability of the robot and surgical effect.

The application discloses an interventional catheter fixing device, and belongs to the technical field of interventional medical instruments. In view of the problems that the existing interventional surgery relies on adhesive tape and simple pipe clamp to fix the catheter and guide wire, step-by-step positioning cannot be realized, there is no in-situ fine adjustment function, the blood vessel passage is easily disturbed, and the operation risk is high, the special fixing device is provided. The device mainly comprises an adjusting support, a ball head assembly, a supporting seat, a clamping assembly, a guide tube, a locking head and a locking cylinder; a double-stage fixing system is formed through the proximal clamping assembly and the distal locking structure, and the guide wire pre-fixing and the catheter post-clamping can be completed step by step. The locking cylinder adopts a split structure that can be opened and closed, and is matched with an elastic conical first clamping sleeve with a through groove, so that the locking structure can be opened and closed without removing the catheter, the in-situ depth and angle fine adjustment of the catheter is realized, and the blood vessel passage in the body is avoided from being disturbed. Meanwhile, the device is integrated with a multi-dimensional adjustment structure for height, horizontal rotation and universal pitch, and is matched with an integrated clamping seat, so as to adapt to various operation scenes.