333 results about "Catheter device" patented technology

Catheter devices for treating occlusions in body lumen are described herein. The catheter devices may include a tubular body having a distal end, an distal portion elastically connected to the distal end of the tubular body, an impactor connected to the distal portion and separated by a space from the distal end of the tubular body, a distal shock wave emitter located adjacent to the space and connected to a power source, and an enclosure at least partially surrounding each of the distal end of the tubular body, the elastic distal portion, the impactor, and the distal shock wave emitter. The impactor may be configured to move in response to shock waves generated from the distal shock wave emitter, such that a length of the space in the proximal-distal direction increases by between 0.05 mm and 0.6 mm.

An exemplary shock wave catheter system comprises: a catheter body comprising a lumen; an emitter wire configured to generate shock waves, wherein one or more gaps are formed between two or more portions of the emitter wire along a length of the catheter body, each of the one or more gaps forming a locus emitter; a carrier wire configured to conduct electricity to the emitter wire; and one or more electrical joints configured to electrically couple and join the emitter wire and the carrier wire.

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.

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.

A catheter device includes a tube member. The tube member comprises a distal portion and a proximal portion. Each of the distal portion and the proximal portion of the tube member comprises a plurality of cuts circumferentially extending around a longitudinal axis of the tube member. The plurality of cuts of the distal portion of the tube member comprises a first pitch, a first cut length, and a first uncut length, the plurality of cuts of the proximal portion of the tube member comprises a second pitch, a second cut length, and a second uncut length, and the first pitch is less than the second pitch, the first cut length is greater than the second length, and the first uncut length is less than the second uncut length.

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.

The embodiment of the invention provides an expansion catheter device. The dilation catheter device comprises a catheter body assembly and a balloon body assembly. The pipe body assembly comprises a first pipe body and a second pipe body which extend in the same axial direction and can move relative to the axial direction. The second pipe body penetrates through the first pipe body. The balloon body assembly comprises an expansion balloon body and an interception balloon body which are arranged at the far end of the second tube body at an interval; the expansion bag body and the interception bag body are arranged in an expandable or contractible mode. Wherein the expansion bag body and the interception bag body are used for inputting filler to expand when the bag body assembly is exposed out of the first tube body along with relative axial movement, and a thrombus interception space is defined by the expansion bag body and the interception bag body and the blood vessel wall, so that at least part of thrombus extruded by the expansion bag body enters the thrombus interception space; and the first tube body enters the thrombus interception space to perform thrombus suction action. The expanded intercepting capsule body can intercept part of thrombus which falls off due to extrusion, and the thrombus is prevented from flowing to the far end of a blood vessel and causing embolism; and the first tube body can also suck the intercepted part of thrombus out of the body.

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.

A catheter device is disclosed comprising; an elongate sheath (503) with a lumen and a distal end for positioning at a heart valve (6), an embolic protection device (200) for temporarily positioning in the aortic arch for deflection of embolic debris from the ascending aorta to the descending aorta, said embolic protection device is connectable to a transluminal delivery unit (130) extending proximally from a connection point (131), and having: a frame with a periphery, a blood permeable unit within said periphery for preventing embolic particles from passing therethrough with a blood flow downstream an aortic valve into side vessels of said aortic arch to the brain of a patient, and at least one tissue apposition sustaining unit (300, 350) extending from said catheter, into said aortic arch, and being attached to said embolic protection device at a sustaining point (502), for application of a stabilization force offset to said connection point at said embolic protection device, such as at said periphery, and for providing said stabilization force towards an inner wall of said aortic arch, away from said heart, and in a direction perpendicular to a longitudinal extension of said periphery, when said catheter device is positioned in said aortic arch, such that tissue apposition of said periphery to an inner wall of said aortic arch is supported by said force for improving stability and peripheral sealing. In addition related methods are disclosed.

The invention relates to the technical field of medical instruments, in particular to a catheter device for taking out blood vessel thrombus, which comprises a connector and a suction catheter body, one end of the suction catheter body is connected with a suction port of the connector, and a liquid suction pipe orifice communicated with an inner cavity is fixedly mounted on the side surface of the connector. A guide wire is inserted into the inner side of the suction catheter body in a penetrating mode and penetrates through an inner cavity of the connector. The thrombus aspiration catheter has the advantages that the aspiration catheter body is slowly inserted into a blood vessel, the aspiration opening of the aspiration catheter body is moved to the thrombus, the thrombus can be aspirated, the thrombus can be aspirated, the thrombus can be aspirated, the thrombus can be aspirated, the thrombus can be aspirated, the thrombus can be aspirated, the thrombus can be aspirated, the thrombus can be aspirated, the thrombus can be aspirated, and the thrombus can be aspirated. The guide wire is driven by the adjusting mechanism to extend forwards along the inner cavity of the suction catheter body, the guide wire firstly drives the telescopic mechanism to slide forwards, and the guide wire continues to move close to the suction opening of the suction catheter body.

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.

A steerable sheath and catheter system includes a steerable sheath assembly with a camera or visual capabilities and a treatment catheter. The sheath assembly is optimized to be compatible with the treatment catheter and provides one or more working channels, and visualization capabilities during a procedure. The sheath assembly can also provide steering capabilities which allows the treatment catheter to gain access to a lumen of a subject, such as an airway, and be precisely positioned in the lumen for treatment thereof.

A catheter device includes a flexible tube and an extracorporeal unit. The tube has a distal opening that is configured to be transluminally advanced into a subject, and a proximal end. The extracorporeal unit is coupled to the proximal end, and includes (i) a body, and (ii) a series of cartridges, distributed along a proximal-distal axis of the body, with a distalmost cartridge being closest to the proximal end of the tube. A series of anchors includes a leading anchor and other anchors, each anchor being (i) housed by a corresponding cartridge, with the leading anchor housed by the distalmost cartridge, and (ii) coupled to a tether such that the tether extends along the body, parallel with the proximal-distal axis. Other embodiments are also described.

The utility model discloses a catheter device with a catheter easy to replace. The catheter device comprises a double-cavity catheter body and a catheter replacing guide wire. A first channel and a second channel are arranged inside the double-cavity tube body, a first tube head communicated with the first channel and a second tube head communicated with the second channel are formed at the upper end of the double-cavity tube body, a urination hole communicated to the first channel is formed in the outer wall close to the lower end of the double-cavity tube body, and a guide wire passing hole is formed in the bottom of the double-cavity tube body. The lower part of the outer wall is provided with an air guide hole for communicating the second channel with the inflating balloon; hemispherical soft heads are arranged at the upper end and the lower end of the tube replacement guide wire, and the outer diameter of the soft heads is equal to the outer diameter of the tube replacement guide wire. The double-cavity catheter has the advantages that under the guidance of the catheter replacement guide wire, the lower end of the double-cavity catheter body can be driven to be smoothly pushed into the bladder of a patient through the urethral orifice of the patient, catheter indwelling blocking caused by urethral bending and the like in the catheter indwelling process is not likely to happen, and in other words, the catheter indwelling speed and efficiency of the double-cavity catheter body can be greatly improved by arranging the catheter replacement guide wire.

The utility model belongs to the technical field of pediatrics, and particularly relates to a pediatrics bronchoscope catheter device which comprises a lip plate making contact with the lip of a patient, a first guide pipe is installed on the side, away from the lip of the patient, of the lip plate, a notch is formed in the side edge of the first guide pipe, and a positioning assembly is arranged on one side of the notch of the first guide pipe. A second guide pipe is arranged on the side, making contact with the patient, of the lip plate. Wherein the positioning assembly comprises a clamping plate, the outer side face of the clamping plate is connected with a connecting rod, one end of the spring abuts against the clamping guide cylinder, the other end of the spring abuts against the clamping plate, and the length of the portion, stretching into the human body, of the mirror image tube is kept by releasing the clamping plate of the positioning assembly to clamp the mirror image tube. Therefore, examination and sampling work are facilitated, sampling or examination work is facilitated, and excessive physical power consumption caused by the fact that medical staff need to keep the length of the mirror image tube extending into the human body unchanged and keep a certain posture for a long time can be reduced.

The present invention relates to a catheter construction and method of use suitable for use in navigating within a body lumen or vessel, such as a vein, artery, nasal cavity, esophagus, etc. to assist in the performance of various procedures. The device can include a flexible tubular member having a proximal end, a distal end, and channel extending substantially between the proximal end and the distal end, a stiffening sleeve positioned at the distal end of the tubular member to provide stiffness thereto so that a removable procedural tool can be attached to the tubular member, and an elongated non-elastic tether situated within the channel of the tubular member and secured at one end to the distal end of the member, such that when the tether is held in tension, the tether acts to minimize the tubular member from deviating from a neutral state.

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.