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efficiency is improved, meanwhile, the guide wire can be rapidly fixed, the guide wire does not need to be completely withdrawn out of the catheter, the surgical operation difficulty is reduced, and the surgical time is shortened.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

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.

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.

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 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

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 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.

A nasal bureau tube electromagnetic navigation system based on virtual enhancement comprises a catheter, a guide wire, a positioning device, a camera and a host. And a tracking sensor is arranged on the guide wire. The positioning device comprises a positioning assembly. The positioning assembly comprises at least three positioning sensors. The three positioning sensors are matched with the tracking sensor to position the position of the tracking sensor in the human body. The camera obtains the body characteristics of the patient and transmits the body characteristics to the host. The virtual augmentation unit seamlessly fuses the advancing track of the tracking sensor and a virtual human body image together to form a visual motion track of the tracking sensor on the basis that the visual image of the body of the patient is obtained by using a virtual augmented reality technology according to the body characteristics of the patient. According to the electromagnetic navigation system, the insertion time of medical personnel can be greatly saved, the injury to a patient is reduced, and meanwhile, the technical requirements on the medical personnel can be reduced.

This application discloses a thrombus filtration device, including a catheter, a guidewire, and a filter. The filter is fixedly disposed at the distal end of the guidewire by welding, bonding, or other methods, and has filter mesh for capturing thrombi. The guidewire and filter are movably inserted into the lumen of the catheter to enter or exit the blood vessel through the catheter. This thrombus filtration device, by fixing the filter at the distal end of the guidewire, allows for simultaneous delivery and removal of the guidewire and filter into the blood vessel, simplifying the surgical procedure, shortening the surgical time, and improving the safety of the procedure.

A nasal feeding tube system with a monitoring device comprises a catheter, a guide wire, a main machine and a positioning device. The guide wire is provided with a tracking sensor. The positioning device comprises a support, a positioning assembly and a laser head module. The positioning assembly comprises a positioning sensor. The positioning sensor is matched with the tracking sensor to position the position of the tracking sensor in the human body. And the host is used for calculating the position of the tracking sensor in the human body according to data returned by the positioning sensor and the tracking sensor. The laser head module comprises a direction adjusting mechanism and a laser head. The direction adjusting mechanism is controlled by the host and enables light spots emitted by the laser head to correspond to the position of the tracking sensor in the human body under the control of the host. According to the nasal feeding tube system, the insertion time of medical staff can be greatly saved, harm to a patient is reduced, and meanwhile the technical requirement for the medical staff can be lowered.

The embodiment of the application belongs to the technical field of medical robots, and relates to an interventional surgery robot slave end, which comprises a guide wire control device and at least one catheter control device. Each catheter control device comprises a catheter delivery mechanism and a catheter rotating mechanism. One catheter is correspondingly arranged on one catheter control device, the front end of the catheter is clamped on the catheter delivery mechanism, and the tail end of the catheter is connected with the catheter rotating mechanism. The guide wire control device comprises a guide wire delivery mechanism and a guide wire rotating mechanism. The guide wire is arranged in the catheter, the tail end of the guide wire is clamped on the guide wire delivery mechanism after extending out of the catheter, and the tail end of the guide wire is connected with the guide wire rotating mechanism. The technical scheme provided by the application can split the power for controlling the delivery and rotation of the catheter / guide wire, simplify the structure design and control logic, and improve the stability of the whole machine.

Tissue-cutting devices and methods thereof, where a tissue-cutting device is coupleable with a catheter. The tissue-cutting device includes a blade that cuts the skin during insertion of the device in a needle track to enlarge to needle tract. The tissue-cutting device is configured for lateral separation from the catheter and / or a guidewire. The tissue-cutting device includes a channel for receiving the catheter and / or a guidewire. The channel can be configured to (i) retain the catheter / guidewire within the channel in the absence of a deliberate action by the clinician and (ii) facilitate lateral removal of the catheter / guidewire from the channel in response to the deliberate action. A catheter assembly includes a catheter coupled with the tissue-cutting device. The tissue-cutting device may include a sheath extending along a distal portion of the tissue-cutting device.

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.

Apparatuses, methods, systems, and program products are disclosed for an ultrasound-equipped catheter stylet system. An apparatus includes a catheter and a stylet configured for insertion into the catheter. The stylet includes a shaft having a first end and a second end and an ultrasound transceiver coupled to the first end of the shaft, the ultrasound transceiver configured to transmit and receive an ultrasound signal.

The utility model relates to the technical field of medical instruments, and discloses a medical catheter guide wire guiding auxiliary device which comprises a micro-guide hose, an inner wire and an organic light-emitting material head, the end, away from the organic light-emitting material head, of the micro-guide hose is fixedly connected with a catheter end, and first external threads are arranged outside the organic light-emitting material head. The side, close to the micro-guide hose, of the organic light-emitting material head is fixedly connected with an insertion pipe, a second external thread is arranged outside the insertion pipe, the outer portion of the organic light-emitting material head is rotationally connected with a soft wrapping pipe, and a clamping groove is formed in the end, away from the end of the guide pipe, of the inner wire. According to the utility model, the detachable organic light-emitting material head is matched and externally connected with the optical sensing display, so that a doctor can be assisted to guide the guide wire, the misoperation risk is reduced, and the head can be replaced and adjusted as required. Meanwhile, the friction force of the inner wire is increased to prevent the inner wire from retreating due to resistance, and the operation difficulty of the microcatheter and the microguide wire is reduced.

A device includes a system for performing valve replacement or repair. The device may include an outer catheter, one or more exchangeable inner catheters, a guidewire, and an expandable chordae tendineae deflector. The outer catheter and inner catheter may be configured to engage to prevent gapping. The inner catheter may include the chordae tendineae deflector. The outer catheter may be configured as a rapid pacing sheath that may be used with any of these devices.

The invention belongs to the technical field of medical instruments, and particularly relates to an integrated assembly for deep vein puncture, which comprises a puncture needle, the puncture needle comprises a connector, a needle tube connected to the bottom of the connector and a branch tube connected to the side part of the connector, and the upper part of the connector is provided with a first plugging tube; the needle tube is arranged in the catheter in a penetrating manner; the tail tube is detachably connected with the puncture needle, and a clamping assembly capable of clamping a guide wire is arranged in the tail tube. Parts such as the puncture needle, the catheter and the guide wire are pre-assembled through integrated design, step-by-step unpacking is not needed, the operation steps and the accessory exposure time are reduced, the pollution probability is reduced, and the puncture time consumption is shortened; the clamping assembly is matched with the trapezoidal structure of the clamping block through the extrusion block, the guide wire can be stably clamped, displacement or slippage is avoided, puncture failure and complications (such as bleeding and hematoma) caused by movement of the guide wire are reduced, and the pain of repeated puncture of a patient is reduced.