230 results about "Catheter device" patented technology

A prosthesis assembly includes a stent frame that is expandable and configured for being positioned in the ascending aorta, and a receiving socket positioned within a proximal end of the prosthesis assembly. The receiving socket defines a recess for allowing flowthrough of blood into the stent frame. The receiving socket is further configured for selectively receiving a heart valve assembly for replacing a native heart of a patient or maintaining a mode of operation where the socket is empty and blood flows through the socket into the stent frame.

The application belongs to the technical field of medical supplies, and discloses an OCT catheter loading system which comprises a catheter device and a driving device. The catheter device comprises a first plug-in assembly, a fixing sleeve and a fiber connector, the fiber connector is fixedly arranged in the fixing sleeve, the catheter is plugged into the fiber connector, and the fixing sleeve has an initial position and a rotating position relative to the first plug-in assembly; the driving device comprises a fixing seat, a second plug-in assembly, a fiber adapter and a driving assembly, the second plug-in assembly is arranged in the fixing seat, and the fiber adapter is arranged in the fixing seat through a fixing member. Before the fiber connector and the fiber adapter are plugged in, the fixing sleeve is located at the initial position relative to the first plug-in assembly; after the fiber connector and the fiber adapter are plugged in, the second plug-in assembly drives the first plug-in assembly to move to the rotating position relative to the fixing sleeve, and the driving assembly drives the fiber adapter to rotate, so that the plugging work of the fiber connector and the fiber adapter is manually completed.

Systems, devices, and methods described herein relate to catheter devices for therapy delivery. In some embodiments, a catheter device includes a shaft and a needle, where the shaft defines a lumen configured to slidably receive the needle such that the needle can be advanced distally beyond the shaft to penetrate into a tissue site. The shaft further including a first electrode, and the needle including a second electrode, where the first and second electrodes are configured to deliver electroporation to the tissue site.

Provided are methods and devices for facilitating the advancement of a catheter device, such as an intracardiac ultrasound examination catheter, through a body wall, such as the septum of the heart. The catheter device is advanced through a subject's vasculature to a first body cavity. The catheter device is coupled to a guidewire previously placed within the vasculature between the first and second cavities. The catheter device is then advanced from the first body cavity to the second body cavity through a body wall separating the first and second cavities. To facilitate this advancement, the catheter device can be magnetically coupled to the guidewire. The magnetic assembly can be provided on a distal portion of a sleeve through which the distal portion of the catheter is advanced. A malleable dilator element can also be provided on the distal portion of the sleeve.

The drainage catheter device is composed of a soft drainage tube, a homogeneous transparent body and a visual module based on integration of a light source and a camera, the head end of the homogeneous transparent body is arc-shaped, the tail end of the homogeneous transparent body is flat and is matched with and connected with the diameter of the drainage tube, and the length of the transparent body is larger than or equal to the object distance of the visual module. One or more side holes are formed in the side face, close to the tail end of the transparent body, of the drainage tube, and the side holes are drainage holes of the drainage tube. According to the drainage catheter device, a one-cavity dual-purpose using method is adopted, the drainage catheter device can be used as a visual cavity and can also be used as a drainage cavity, it can be guaranteed that the diameter of the soft drainage catheter body is small, and trauma to brain tissue is smaller.

Systems, devices, and methods described herein relate to catheter devices for therapy delivery. In some embodiments, a catheter device includes an expandable electrode and a needle, where the needle can be advanced distal to a distal end of the expandable electrode and inserted into a tissue site. The expandable electrode and the distal end of the needle can be configured to deliver electroporation to the tissue site.

Systems, devices, and methods described herein relate to catheter devices for therapy delivery in renal denervation applications. In some embodiments, a catheter includes a shaft having first and second sets of electrodes. In some embodiments, each electrode set can include electrodes that are spaced from one another by inter-electrode spacings and being spaced from one another by an inter-set spacing. In some embodiments, the inter-set spacing can be at least 50% greater than each inter-electrode spacing. In some embodiments, the first or second set of electrodes can include at least one basket electrode.

Exemplary embodiments described herein are directed to a vascular access catheter device with an inline needle, the device having a needle portion that is linearly displaceable relative to a catheter portion, and vice versa, and to methods of performing blood transfer procedures using said device. Retraction of the needle portion relative to the catheter portion allows the catheter of the catheter portion to cover the needle tip during a blood transfer procedure, thereby preventing needle damage to a fistula / graft or peripheral vessel of a patient, as well as possible needle stick injuries to health care workers during removal / disposal of a used device. Because the needle still remains largely within the catheter after retraction, there is no risk of catheter collapse, kinking, etc., during use, which could compromise blood flow during a hemodialysis or other vascular access procedure.

An intraosseous access device can include a device body, a trocar needle coupled to the device body, and an intraosseous catheter removably disposed on the trocar needle. The device body can be configured to enable manual insertion of a distal tip of the trocar needle through a skin surface of a patient to an external surface of a bone of the patient. The intraosseous catheter can include a catheter hub and a cannula slidable with respect to the catheter hub to enable adjustment of a longitudinal length of the intraosseous catheter. The intraosseous access device can further include an advancement mechanism configured to advance the trocar needle and the intraosseous catheter into an internal portion of the bone after the distal tip of the trocar needle and the intraosseous catheter have been inserted through the skin surface of the patient to the external surface of the bone of the patient.

An intravenous catheter device may include a guidewire for actively repositioning the catheter tip. A guidewire assembly may be configured to enable a clinician to actively reposition the catheter tip by moving proximal ends of segments of the guidewire. By repositioning the catheter tip, the guidewire assembly may facilitate the collection of a blood sample or the injection of a fluid through the catheter even in instances when the catheter tip has become occluded.

The present invention provides a device and method for providing an internal balloon sheath. [Solution] One device includes a sheath (400) for insertion through a patient's arterial incision. The sheath comprises a tubular sheath body (402) having a longitudinal axis, a proximal opening, a distal opening, an outer surface, and an inner surface that defines a lumen between the proximal and distal ends for the catheter device to pass through. The sheath also comprises an inflatable balloon (410) positioned within the lumen. The inflatable balloon provides a longitudinal space within the lumen between the inner surface of the sheath body and the catheter device (422) when the catheter device is positioned within the sheath and the balloon is inflated. It is configured to occupy the space and to fluidly seal the lumen.

This invention discloses a puncture catheter device, including a puncture head housing. The puncture head housing includes a support section and an insertion section for insertion into a pneumoperitoneum along its length. The insertion section houses a balloon assembly. A fixing ring is slidably fitted onto the support section, and a locking component for fixing the fixing ring is connected to the end of the fixing ring furthest from the balloon assembly. During operation, the insertion section is inserted into the pneumoperitoneum. Gas is injected into the balloon assembly, causing it to expand within the pneumoperitoneum. The balloon assembly blocks the gap between the puncture head housing and the sidewall of the pneumoperitoneum, achieving an airtight seal. The fixing ring is then driven to slide along the support section to a preset position. The limiting space formed between the fixing ring and the balloon assembly abuts against the inner and outer walls of the pneumoperitoneum, providing support and airtightness for the puncture head housing. The balloon assembly prevents air leakage due to puncture head housing misalignment, ensuring sufficient airtightness and guaranteeing the safety and stability of the surgical procedure.

The invention relates to the technical field of medical instruments, and particularly discloses a catheter handle, a catheter pump and a catheter pump system. According to the catheter handle, the perfusion liquid inflow connector, the artery pressure measuring liquid inlet connector, the artery pressure measuring liquid outlet connector and the catheter connector are arranged on the perfusion support, the perfusion liquid outflow connector is arranged on the coupling support, the perfusion support and the coupling support are large in size, and therefore the connectors can be conveniently arranged; the number of parts is reduced, so that the machining process of the guide pipe device is simplified; besides, the artery pressure measuring liquid inlet connector and the artery pressure measuring liquid outlet connector are arranged on the perfusion stent, the connectors can be conveniently arranged, an independent aorta pressure sensing channel is formed, and compared with the prior art, flowing of perfusion liquid used for sensing the aorta pressure is not prone to being interfered by other factors, and the perfusate can be used for sensing the aorta pressure. And thus, the aortic pressure sensing precision is improved.

The present application relates to a kind of conduit end connector, conduit device, connecting device and endoscope system, including conduit end connecting frame and first coupling unit;Conduit end connecting frame includes conduit end plate and conduit end support, conduit end support from conduit end plate towards the positive direction of first direction extends;First coupling unit includes conduit end thrust coupling part, conduit end tension coupling part and linear transmission mechanism relatively static in first direction;The input end of conduit end thrust coupling part extends conduit end plate, and is used to receive the action force of positive direction towards first direction and the action force of self-rotation in first direction, the output end of conduit end thrust coupling part is fixedly connected with the input end of linear transmission mechanism;Linear transmission mechanism is used to output linear reciprocating motion;The input end of conduit end tension coupling part extends conduit end plate, and is used to receive the action force of negative direction towards first direction.Conduit end connector can be used with handle end connector, realize the effect of accurate conduit and push-pull wire.

The invention relates to the technical field of medical instruments, in particular to a piezoelectric crystal shock wave catheter device and a shock wave intensity adjusting method, and the catheter device comprises a shock wave generator which comprises a pulse excitation output module and generates pulse excitation voltage with specific amplitude and frequency; the piezoelectric crystal assembly comprises a piezoelectric crystal sending unit, the pulse excitation voltage is applied to the two ends of the piezoelectric crystal sending unit, and the piezoelectric crystal sending unit is used for generating repeated deformation after receiving the pulse excitation voltage and restoring to drive the nearby liquid medium to vibrate to generate shock waves. The shock wave generator is matched with the piezo-electric crystal sending unit to generate shock waves, the focusing device is used for focusing and sending the shock waves, shock wave energy can be converged to the focus, calcified substances are placed at the focus, and the pulse excitation frequency is adjusted, so that the piezo-electric crystal generates resonance; the energy utilization rate and the treatment efficiency are improved.

An ablation catheter device, including: an elongated flexible body having a long axis, a proximal end and a distal end; an expandable therapeutic portion coupled to the elongated flexible body and located between the proximal end and the distal end of the elongated flexible body, wherein the expandable therapeutic portion comprises at least one central flexible shaft configured to move between a collapsed state and an expanded state; and two or more elongated electrodes coupled to the expandable therapeutic portion, wherein the two or more elongated electrodes are twisted around the at least one central flexible shaft.

To provide a catheter device and retrieval method that can reduce the burden on blood vessels. [Solution] The catheter device according to this disclosure is characterized by comprising a peeling mechanism 4 that peels the intima 21 to which the lesion 20 is attached from the media 22 by supplying liquid between the intima 21 and the media 22 of the blood vessel 2 through a crack (first crack 25) formed in the intima 21 of the blood vessel 2. The intima 21 is easily peeled from the media 22 by the pressure of the liquid that flows between the intima 21 and the media 22. Therefore, it is not necessary to bring the peeling mechanism 4 or other instrument into contact with the blood vessel 2 in order to peel the intima 21. Moreover, it is possible to prevent the inconvenience of removing the media 22 when removing the intima 21. As a result, the burden on the blood vessel 2 can be reduced.

In one embodiment, a catheter apparatus is configured to be inserted into a body part of a living subject, and including an elongated deflectable element including a distal end, an expandable basket assembly disposed at the distal end and comprising a plurality of splines and a plurality of electrodes disposed on the splines, an irrigation channel disposed in the elongated deflectable element, and an inflatable balloon disposed in the expandable basket assembly and including a plurality of irrigation holes in fluid connection with the irrigation channel.

A configuration method for a radio frequency signal generation device, and a computer-readable storage medium. The method comprises: a control device communicating with a catheter device; on the basis of catheter type information transmitted by the catheter device, identifying a target treatment mode corresponding to the catheter; on the basis of the identified target treatment mode, acquiring a catheter treatment parameter corresponding to the type of the catheter device; and on the basis of the catheter treatment parameter, controlling the catheter device to execute the catheter treatment parameter for treatment. Therefore, customized configuration between one control device and a plurality of different types of catheter devices can be achieved; thus, simply replacing the catheter devices on the control device suffices to meet the need of different treatments, thereby saving costs and improving the universality of the control device for the radio frequency signal generation device.

The utility model belongs to the field of agricultural mechanical equipment, and provides a pesticide spraying machine. Comprising a rack, a pesticide liquid barrel is arranged at the bottom of the rack, a plunger pump and a pipe coiling device are arranged on the upper portion of the rack, and a spray head support and a vehicle hanging support are arranged on the lower portion of the rack. A hose is stored on the hose coiling device, and a reciprocating type hose arranging device and a 360-degree hose guiding device are further arranged at the top of the hose coiling device; a plurality of nozzles are arranged on the nozzle bracket; a liquid inlet of the plunger pump is communicated with the liquid medicine barrel, a liquid outlet of the plunger pump is connected with the front end of the hose in a clamped mode, and the rear end of the hose penetrates through the 360-degree catheter device to be communicated with the spray head. The hose winding device, the reciprocating type hose arranging device and the 360-degree hose guiding device are arranged, so that the hose storage and guiding problems are solved; by arranging the plunger pump clutch and the pipe coiling device clutch, independent control of the plunger pump and the pipe coiling device is achieved, and the spraying device has the advantages of improving spraying operation efficiency and safety and reducing operation difficulty and maintenance cost.

The utility model discloses a urinary dual-purpose radiography catheter which comprises a catheterization opening, an air bag, a catheter body, a water injection pipe, a first sealing cover, a connecting end, an auxiliary side pipe, a top end opening and a second sealing cover, the connecting end is fixedly connected to the tail end of the catheter body, the water injection pipe is fixedly connected to the side end of the bottom of the catheter body, and the auxiliary side pipe is fixedly connected to the top end opening. The auxiliary side pipe is fixedly connected to the other side end of the bottom end of the pipe body, the first sealing cover is fixedly arranged on the water injection pipe in a clamped mode, the second sealing cover is fixedly arranged on the auxiliary side pipe in a clamped mode, the air bag is arranged in the end, away from the connecting end, of the pipe body, and the urinary catheterization opening is formed in the front end of the pipe body. The top end opening is formed in the end of the pipe body. The urethral catheter device has dual purposes in a urinary system, namely functions of a ureteral catheter and a urethral catheter, and can also be used for radiography examination.

For improved image quality, a method is provided for intraluminal 3D imaging by means of a catheter device introduced into a hollow organ of an examination object, having an image recording device and a measuring device with an optical fibre, in particular multifunctional shape-sensing (= MFSS) fibre, during a movement of the catheter device through the hollow organ, the method comprising the following steps: recording at least two cross-sectional images using the image recording device at different recording positions within the hollow organ, and simultaneously with each cross-sectional image, carrying out at least one sensor measurement by the measuring device using the optical fibre, evaluating the sensor measurements by the optical fibre in such a way that a current orientation of the image plane of the cross-sectional images recorded by the image recording device is determined at the respective recording position, in particular relative to the hollow organ and / or the centre line of the hollow organ, and reconstructing the at least two cross-sectional images by the image recording device to form a 3D volume of the hollow organ taking into account the evaluated orientations of the image planes of the cross-sectional images.

Heart valve prostheses comprise an expandable stent frame configured to expand from a contracted orientation to an expanded orientation. The heart valve prostheses can further comprise a valve apparatus extending past a distal end of the expandable stent frame. The valve apparatus comprise a plurality of commissure posts, each commissure post of the plurality of commissure posts comprises a first end portion attached to a distal end portion of the expandable stent frame, a second end portion attached to a distal tip of the valve apparatus at a distal end of the valve apparatus. The plurality of commissure posts converge together in a distal direction towards the distal tip. The valve apparatus further comprise a plurality of leaflets each coupled to a corresponding pair of the plurality of commissure posts.

The disclosed technology relates to a catheter configured to reduce microvascular obstruction (MVO) in myocardial tissue at risk due to an acute myocardial infarction (AMI). The catheter comprises a catheter shaft that is configured to be inserted into a heart of a patient. A channel is arranged in the heart and is configured to deliver blood from a first location in the heart to a second location in the heart. A pressure sensor is configured to monitor pressure at the second location to ensure controlled delivery of blood from the first location to the second location. The catheter device is operable to reduce the amount of tissue actually comprising MVO by approximately 20% compared to untreated regions.

A catheter device may include a body. The body can include a handle body, an actuator, a force sensor, and a displacement sensor. The catheter device may include a scaffold. The scaffold can include a plurality of splines. Each of the plurality of splines can extend transversely and longitudinally along the body. The deployable scaffold can move between a first position to a second position and all positions in-between. The catheter device may further include a shaft assembly. The shaft assembly can include an outer shaft and inner shaft coupled to the body portion. In the first position, the scaffold can be in a collapsed state. In the second position, the scaffold can be in an expanded state. The force sensor and displacement sensor may be located in the body to measure force and / or displacement translated by the inner and outer shaft from the scaffold.

A method of treating a blood vessel in a subject comprises the steps of advancing a catheter device comprising a deployable abrasive element distally across a treatment zone in the vessel, deploying the abrasive element into contact with the vessel wall, actuating the abrasive element to cause disruption of the vessel wall and exposure of subendothelial layers of the vessel wall at the treatment zone, infusing a sclerosant agent into the blood vessel via the catheter to contact and induce cellular necrosis in the exposed subendothelial layers of the vessel wall, recapturing the abrasive element by the catheter device, and withdrawing the catheter device from the vessel. The method may comprise an additional step of inducing vasospasm of the treatment zone of the vessel prior to disruption of the vessel wall by administering a stimulus to the vessel wall by the catheter device.

The application discloses a self-adaptive vena cava occlusion balloon ventricular assist system, which comprises a balloon catheter device and a control device. The balloon catheter device comprises a catheter, a balloon arranged on the catheter and close to the proximal end of the catheter, and a joint arranged on the distal end of the catheter. The catheter is provided with a first pressure cavity, a second pressure cavity and a liquid delivery cavity. The first pressure cavity is used for connecting the first blood pressure measuring port and the joint and is connected with the first blood pressure sensor through a first catheter. The second pressure cavity is arranged on the catheter in a lengthwise direction and is used for connecting the second blood pressure measuring port and the joint and is connected with the second blood pressure sensor through a second catheter. The liquid delivery cavity is used for connecting the inside of the balloon and the joint and is connected with a liquid delivery pump through a liquid delivery catheter. A micro pressure sensor is attached to the outer wall of the balloon, and a signal line led out from the micro pressure sensor is connected with a signal acquisition module through a signal extension line. The application can adjust the pressure of the balloon on the blood vessel wall during occlusion according to the change of the vena cava diameter, improve the occlusion effect and avoid damaging the blood vessel.

A medical catheter and its manufacturing method are presented, creating a single device from two distinct components. The catheter features a proximal shaft and a distal shaft with distinct polymeric material where the exposed braided structures are mechanically connected at a transition portion, resulting in a single shaft. A reinforcing assembly is integrated into the proximal shaft and includes reinforcing sleeves with helical coils creating a steering wire guidance system, and an anchor ring mechanically connected to the transition portion. The distal shaft incorporates an articulation structure with interconnected elements and steering wire lumens aligned with the reinforcing assembly. The manufacturing process involves selectively removing polymeric jackets of a proximal and distal shaft, exposing the braided structures, and mechanically connecting the braided structures. Such a medical catheter device and method of manufacturing addresses limitations of conventional joining methods, enhancing maneuverability and precision for navigating complex anatomies in various applications.

The present disclosure provides a transcatheter device including: an anchor (200) anchored to an inner wall of an inferior vena cava (IVC); and a main shaft (10) having a proximal shaft (110) that extends from the anchor (200) toward a tricuspid valve (TV) along a cavotricuspid isthmus (CTI) of a heart, a middle shaft (120) that extends from the proximal shaft (110), passes through the TV, and has a spacer (300) preventing a reverse flow in the TV mounted thereon, and a distal shaft (130) that extends from the middle shaft (120) into a pulmonary artery (PA), and the distal shaft (130) of the main shaft (100) includes a first distal part (131) that extends in a curved shape having a predetermined curvature from the middle shaft (120), a second distal part (132) that extends from the first distal part (131) and bends at point B1, which is one point that is over and surrounds an aorta, toward the proximal shaft (110), and a third distal part (133) that extends from the second distal part (132) toward the proximal shaft (110).