1497 results about "Balloon catheter" patented technology

The present invention relates to medical devices and methods for treating a lesion such as a vascular stenosis using non-thermal irreversible electroporation (NTIRE). Embodiments of the present invention provide a balloon catheter type NTIRE device for treating a target lesion comprising a plurality of electrodes positioned along the balloon that are electrically independent from each other so as to be individually selectable in order to more precisely treat an asymmetrical lesion in which the lesion extends only partially around the vessel.

The present application provides a discharge controllable shock wave balloon catheter system, which includes a shock wave therapy main unit (1), a balloon (2), a catheter, and a plurality of electrode pairs (6); an end of the catheter is arranged passing through the balloon (2), and an other end of the catheter is connected to the shock wave therapy main unit (1); the plurality of electrode pairs (6) are accommodated in the balloon (2) and mounted on the catheter; the plurality of electrode pairs (6) are arranged to be spaced apart along a length direction of the catheter; each of the plurality of electrode pairs (6) is independently connected to the shock wave therapy main unit (1), and the plurality of electrode pairs (6) are not connected to each other.

Methods of treating a central airway obstruction (CAO), benign airway stenosis, asthma, chronic obstructive pulmonary disease (COPD), or an airway tumor in a human subject, methods of treating chronic rhinosinusitis (CRS) or chronic rhinosinusitis with nasal polyps (CRSwNP) in a human subject, methods of treating a eustachian tube disorder in a human subject, and devices and systems for performing the methods. A method of treating a central airway obstruction (CAO), benign airway stenosis, asthma, chronic obstructive pulmonary disease (COPD), or an airway tumor in a human subject includes inserting a drug-coated balloon catheter into a target site in a trachea, mainstem bronchus, bronchus intermedius, lobar bronchus, segmental bronchus, or sub-segmental bronchus, wherein the balloon is coated with a coating layer including the therapeutic agent and one or more additives. The therapeutic agent includes paclitaxel, sirolimus, or a derivative thereof. The method includes inflating the balloon to dilate the airway and deliver a therapeutic agent to the airway wall. The method includes deflating the balloon. The method also includes withdrawing the balloon catheter from the target site.

Pulsatile balloon catheter systems are provided. Aspects of the systems include: a pulse generator; and a balloon catheter assembly operably connected to the pulse generator. In embodiments, the balloon catheter assembly includes: a proximal connector operably connecting the balloon catheter assembly to the pulse generator and configured to transduce a first pulse energy generated by the pulse generator to a second pulse energy; a distal balloon; and a catheter component, where the catheter component includes a fluidic passage operably positioned between the proximal connector and the distal balloon, which passage is configured to propagate the second pulse energy from the proximal connector along the fluid passage to the distal balloon. Also provided are balloon catheter assemblies and kits that include the same. Also provided are systems and methods for assessing vessel compliance in-vivo. Also provided are systems and methods for determining system state of balloon catheter systems. The systems, assemblies and kits find use in a variety of different applications, including balloon angioplasty applications.

Balloon catheters, sleeves, cages, cylindrical structures and endoluminal prostheses are provided with stress-applying and spacing features coupled to expandable surfaces thereof. At least one or at least some stress-applying features are immobilized onto the surface or into pre-formed indentations formed in the expandable surface. The stress-applying and spacing features may have blunt and / or rounded contact regions which contact tissue or calcified regions in the vasculature. The contact regions dent or fracture occlusive material on the wall of a vascular lumen and / or patient valve leaflets when expanded. The spacing of features can permit blood, drug, and contrast perfusion past structures expanded in the vasculature, particularly balloon catheters.

A catheter configured to guide and support a balloon catheter for use in and around a pulmonary vein and its ostium, has an elongated shaft and a distal assembly, the elongated shaft including a proximal portion with a first flexibility and a distal portion including a second flexibility greater than the first flexibility, the distal assembly including an elbow portion and a generally circular portion generally transverse to the longitudinal axis, the generally circular portion including a third flexibility greater than the second flexibility. Single axis location sensors and sensing ring electrodes are carried on the generally circular portion.

Pulsatile balloon catheter systems are provided. Aspects of the systems include: a pulse generator; and a balloon catheter assembly operably connected to the pulse generator. In embodiments, the balloon catheter assembly includes: a proximal connector operably connecting the balloon catheter assembly to the pulse generator and configured to transduce a first pulse energy generated by the pulse generator to a second pulse energy; a distal balloon; and a catheter component, where the catheter component includes a fluidic passage operably positioned between the proximal connector and the distal balloon, which passage is configured to propagate the second pulse energy from the proximal connector along the fluid passage to the distal balloon. Also provided are balloon catheter assemblies and kits that include the same. Also provided are systems and methods for assessing vessel compliance in-vivo. Also provided are systems and methods for determining system state of balloon catheter systems. The systems, assemblies and kits find use in a variety of different applications, including balloon angioplasty applications.

Pulsatile balloon catheter systems are provided. Aspects of the systems include: a pulse generator; and a balloon catheter assembly operably connected to the pulse generator. In embodiments, the balloon catheter assembly includes: a proximal connector operably connecting the balloon catheter assembly to the pulse generator and configured to transduce a first pulse energy generated by the pulse generator to a second pulse energy; a distal balloon; and a catheter component, where the catheter component includes a fluidic passage operably positioned between the proximal connector and the distal balloon, which passage is configured to propagate the second pulse energy from the proximal connector along the fluid passage to the distal balloon. Also provided are balloon catheter assemblies and kits that include the same. Also provided are systems and methods for assessing vessel compliance in-vivo. Also provided are systems and methods for determining system state of balloon catheter systems. The systems, assemblies and kits find use in a variety of different applications, including balloon angioplasty applications.

The utility model provides a blade, a cutting balloon and a balloon catheter system. The blade comprises a cutting edge part and a cutter body part connected with the bottom of the cutting edge part. The blade part comprises a plurality of three-dimensional tooth block structures which are continuously arranged; the cutter body part comprises two fixed ends located at the two ends respectively and a middle part between the two fixed ends. The blade is high in cutting capacity for a diseased region, and the blade can be reliably fixed on the main body. The sacculus body of the cutting sacculus provided with the blade is provided with the groove, the blade is provided with the continuous cutting edge portion of the three-dimensional tooth block structure, the flexibility and cutting force of the cutting sacculus are enhanced, the turning performance of the cutting sacculus in a blood vessel and the cutting performance of the sacculus on lesion are improved, the blade is fixed to the groove through the blade body portion, and the cutting sacculus is fixed to the blade body portion. And the probability that the cutting balloon slips and is nested in plaques during cutting is greatly reduced.

Systems and methods can involve wedge dissectors attached to strips in turn attached to medical balloons, for forming serrations within vascular wall tissue for angioplasty as well reducing vessel recoil, reducing residual stenosis, and increasing volumetric blood flow post angioplasty. The design, methods of use, intended outcomes, and process to build this type of balloon is described herein.

The invention discloses an optical fiber balloon catheter, and relates to the technical field of medical instruments. The optical fiber balloon catheter comprises a catheter main body, a balloon and a flow slowing component, the balloon is arranged at the far end of the catheter body, and medicine is arranged on the surface of the balloon. At least in the process of conveying the balloon to a target part, the flow slowing part is located on the receiving side, receiving fluid impact, of the balloon, and the flow slowing part is used for slowing down flushing of fluid to medicine on the surface of the balloon in the process; wherein when the optical fiber balloon catheter performs reverse motion relative to fluid, the welcoming side is the far-end side of the balloon; when the optical fiber balloon catheter moves in the same direction relative to fluid, the receiving side is the near-end side of the balloon. The structure of the optical fiber balloon catheter is improved, scouring of fluid to the balloon in the conveying process is relieved, and loss of the photosensitizer on the surface of the balloon in the conveying process is effectively reduced.

The invention relates to a zero-exchange balloon catheter stent system with a far-end protective umbrella and a using method, and belongs to the technical field of medical instruments. Comprising a balloon catheter and a stent system which are connected, the stent system comprises a conveying system and a stent; the conveying system comprises a control core wire; the center of the control core wire is provided with a connecting binding wire fixing hole and a connecting binding wire releasing point; the support comprises a near-end support, a connecting area and a far-end protective umbrella, and the connecting area is located between the near-end support and the far-end protective umbrella; the connecting area comprises a connecting binding wire, a protective umbrella wire binding ring and a protective umbrella connecting wire. The far-end protection umbrella and the near-end support are designed to be a separable combination, instrument exchange is not needed in the operation process, the operation process is simplified, the operation difficulty is reduced, the operation time is shortened, and therefore the risk of complications such as ischemic stroke is reduced.

Methods and apparatuses for insertion and / or pressurization of a balloon catheter for balloon dilation of anatomical passageways in the head of a person such as the Eustachian tube and Sinus passageways. The insertion devices comprise a balloon catheter guiding tube for receiving and guiding the balloon catheter, and a device body rigidly attached to a proximal end of the balloon catheter guiding tube. The pressurization devices comprise a syringe body with a syringe barrel, a proximal thruster guide section, external hand or finger engagement geometries, a plunger with a distal plunger head and a plunger rod, and a thruster having a proximal end with a finger or hand engagement portion.

A method of treating a recurring airway stricture or stenosis in a body lumen includes inserting a scope and a drug-coated balloon catheter into a target site comprising the recurring airway stricture or stenosis in the body lumen. The method includes inflating the balloon to an inflation diameter such that the coating contacts an interior of the body lumen at the target site. The method includes deflating the balloon and withdrawing the scope and the balloon catheter from the target site.

The invention discloses a balloon catheter for releasing medicine in a human body cavity. The balloon catheter comprises an outer balloon and an inner balloon located in the outer balloon. The diameter of two ends of the outer balloon is larger than that of the middle; a plurality of rows of semi-through holes are formed in the outer balloon, each row of inner semi-through holes are formed in the longitudinal direction of the outer balloon, and a cutting mark is arranged between every two adjacent semi-through holes in each row; and the inner balloon is a three-stage expansion balloon. The double-layer balloon structure is adopted, in the process that the internal pressure of the inner balloon is gradually increased to push the outer balloon to be gradually expanded, two treatment means of medicine spraying and dilation are executed at the same time, and therefore the treatment effectiveness is improved; the use efficiency of the medicine can be ensured while the medicine can accurately act on the focus; compared with an existing treatment means, the application is wider in application range and non-invasive in treatment, foreign matter does not need to be implanted, an instrument does not need to enter a human body cavity for multiple times, and discomfort of a patient during treatment can be greatly reduced.

Systems and methods can involve wedge dissectors attached to strips in turn attached to medical balloons, for forming serrations within vascular wall tissue for angioplasty as well as drug delivery.

Systems and methods can involve manufacturing medical balloons with wedge dissectors for forming serrations within vascular wall tissue for angioplasty, wherein the systems and methods include improved methods of forming the wedge dissectors and attaching the wedge dissectors to the medical balloon as well as a central shaft to increase the cross ability of the catheter to cross lesions. The design, methods of use, intended outcomes, and process to build this type of balloon is described herein.

Various embodiments disclosed relate to polymer-encapsulated drug particles and a drug-releasing coating including the same, as well as drug-coated balloon catheters for treating, preventing, or reducing the recurrence of strictures in body lumens and methods of using the same. A drug-coated balloon catheter for delivering a therapeutic agent to a target site of a body lumen stricture includes an elongated balloon. The balloon catheter includes a coating layer overlying an exterior surface of the balloon. The coating layer includes the polymer-encapsulated drug particles; or a drug-releasing coating including the polymer-encapsulated drug particles; or a therapeutic agent and a first and / or second additive; or a combination thereof.

A delivery handle arrangement and system that facilitates the delivery of an expandable medical device to a treatment site, and wherein the delivery handle arrangement includes a housing having an inner core that extends linearly between a proximal end and a distal end of the housing, and wherein the inner core receives a flexible catheter and a balloon catheter that is disposed coaxially within the flexible catheter; an adjustment mechanism that is configured to control a position of the balloon catheter relative to the flexible catheter, and wherein the adjustment mechanism includes a control knob that has a plurality of threads; and a threaded shaft that is configured to translate linearly within the housing; and a switch that is configured to lock or unlocked the adjustment mechanism.

The invention discloses a perfusion laser balloon catheter and a balloon catheter system, the perfusion laser balloon catheter is provided with a far end and a near end which are opposite to each other, and the perfusion laser balloon catheter comprises a guide wire and a balloon catheter, the inner tube is fixedly arranged on the periphery of the guide wire in a sleeving mode, the far end of the inner tube is blocked by the blocking piece, the inner tube is provided with a medicine channel, and a first outlet communicated with the medicine channel is formed in the far end of the inner tube; the optical fiber extends along the inner tube, and the far-end part of the inner tube is provided with a light-emitting section; the balloon body is located on the periphery of the inner tube, and the far end of the balloon body is connected with the outer wall of the inner tube in a sealed mode; the first outer tube is located on the periphery of the inner tube and communicated with the near-end side of the balloon body, and a radial gap between the first outer tube and the inner tube serves as a fluid channel for inflating the balloon body. According to the perfusion laser balloon catheter, medicine can be better released, the uniformity of light emission is guaranteed, and therefore the treatment effect on vascular diseases is improved.

The invention provides a balloon biopsy catheter in a pulmonary artery, and belongs to the technical field of balloon biopsy catheters. Comprising a catheter body, a working channel opening is formed in the end of one side of the catheter body, an air bag ventilation connecting opening is formed in the end of the side, close to the working channel opening, of the catheter body, a freezing probe body is installed in the catheter body, and a needle core body is installed in the freezing probe body. By arranging the limiting storage mechanism, the catheter body can pass through a zigzag path of a pulmonary artery, and the inflatable air bag body and the air bag inner bag which are installed at the end of one side of the catheter body are inflated after reaching an occupying lesion position, so that the end part of the catheter body can be quickly fixed; therefore, the position of the end of the catheter body is kept stable in the operation process, the freezing probe body and the needle core body are used in cooperation with the balloon catheter, and biopsy sampling is conducted after the air bag body and the air bag inner bag are fixed.

Methods and apparatus for inserting and / or pressurizing a balloon catheter to balloon dilate anatomical channels, such as Eustachian tube and sinus channels, in a human head. The insertion device includes a balloon catheter guide tube for receiving and guiding a balloon catheter, and a device body rigidly attached to a proximal end of the balloon catheter guide tube. A compression device includes a syringe body having a syringe barrel, a proximal pusher guide section, an external hand or finger engagement geometry, a plunger having a distal plunger head and a plunger rod, and a pusher having a proximal end with a finger or hand engagement portion.

The invention relates to a mastoid balloon catheter and a processing method thereof. The mastoid balloon catheter is provided with a far end, a near end and an axial direction, the far end and the near end are opposite, and the axial direction extends between the far end and the near end, and the mastoid balloon catheter comprises a pipe fitting and a catheter body, the balloon body is connected to the far end of the pipe fitting, the balloon body comprises a balloon wall arranged on the periphery of the pipe fitting in a surrounding mode, an inner cavity communicated with the fluid channel is defined in the balloon wall, a plurality of protruding parts facing outwards in the radial direction are distributed on the balloon wall, and concave areas are correspondingly formed on the inner sides of the protruding parts; and at least one part of the supporting piece is fixedly filled in the concave area. According to the mastoid balloon catheter, due to the innovative improvement on the structure, it is ensured that the mastoid points are formed, the supporting pieces with the expected strength are firmly fixed to the inner side of the balloon wall of the balloon body, and the safety risk possibly caused by falling of the mastoid points in the prior art is eliminated.

The invention discloses a renal artery balloon catheter for local drug perfusion, and relates to the technical field of renal artery balloon catheters, the renal artery balloon catheter comprises an access unit, and the access unit comprises a connecting end, a perfusion joint arranged at one end of the connecting end, and a liquid injection joint arranged on the outer wall of the connecting end. The balloon has the advantages that a traditional integrally-injection-molded balloon is changed to be composed of multiple independent tubes, the balloon can be matched with the renal artery with the larger bending degree, the production cost of an enterprise can be reduced, the corrugated balloon formed through expansion and the concave-convex surface can disperse contact pressure, local compression on the intima is reduced, and the balloon has the good sealing effect. And the'grooves' of the waveform structure are in multi-point contact with the blood vessel wall, so that the friction force is increased, and the balloon is prevented from sliding under the impact of blood flow.

A medical elongated body or a balloon catheter with high flexibility. The medical elongated body including: a catheter shaft that extends in an axial direction; and a distal member that is fused to a distal side of the catheter shaft, in which a crystallinity of each of a distal portion of the catheter shaft and a proximal portion of the distal member is less than 40%.

An apparatus includes an endoflator configured for fluid communication with an intravascular catheter and to inflate a balloon of the intravascular catheter with a fluid. At least one of the intravascular catheter or the endoflator includes a sensor configured to provide an output. The apparatus also includes a processor configured to compute a compliance of the balloon based on the output of the sensor, and to provide, to a display, a visual representation of the compliance of the balloon.

The invention provides in-vitro fixing equipment for a balloon catheter for clinical nursing, and belongs to the field of medical instruments. Comprising a mounting box, a fixing rod is fixedly connected to the inner surface of the mounting box, a first buffering assembly is arranged on the outer side of the fixing rod, the first buffering assembly comprises a winding part and a movable part, and the winding part comprises a movable sleeve rotationally connected with the outer surface of the fixing rod. By arranging the first buffer assembly, the guide pipe is wound and stored through the guide frame, the length of the guide pipe on the outer side of the mounting box is within a proper range, meanwhile, the risk that the guide pipe is accidentally pulled can be effectively reduced, the guide pipe is released through movement of the guide frame, the pulling force borne by the guide pipe is buffered and absorbed, and the service life of the guide pipe is prolonged. Therefore, the pulling force transmitted to the balloon catheter can be effectively reduced, the probability that the balloon catheter damages the bladder and the urethra of a patient when the patient accidentally moves can be reduced, and the comfort of the catheterization equipment in the operation process can be effectively guaranteed.

The invention relates to the technical field of medical instruments, in particular to a balloon delivery microcatheter and a using method thereof.The microcatheter comprises a handle, a balloon delivery pipe, a balloon delivery pipe and a balloon delivery pipe, the catheter body is connected with the handle, and the catheter body sequentially comprises a near-end tube, a balloon tube and a far-end tube from near to far; wherein the catheter body is of a double-cavity structure and comprises an inner cavity and an outer cavity, the inner cavity is a channel, one end of the inner cavity is communicated with the first connector, and the other end of the inner cavity penetrates to the end of the far-end tube and is used for conveying instruments, therapeutic drugs or diagnostic radiography liquid; one end of the outer cavity is communicated with the second connector, the other end of the outer cavity is communicated with the balloon tube, and the outer cavity is used for filling and pressure relief of the balloon tube. The balloon catheter has the functions of a micro catheter and a balloon catheter, a near-end blood vessel can be blocked, temporary blocking of local blood flow is achieved, the balloon catheter is further used for expanding the position, not attached to the wall, of an intravascular stent, the stent can be better attached to the blood vessel wall, and therefore pain and risks of a patient are reduced.

The invention provides a balloon catheter suitable for long vasculopathy, and relates to the technical field of medical instruments. The first balloon is arranged at the far end of the catheter body; the diameter of the near end of the first balloon is larger than that of the far end of the first balloon. A through inner cavity is formed in the middle of the catheter body, and a communicating channel communicating the first balloon with the inner cavity is formed in the side wall of the catheter body. By arranging the first balloon and the second balloon, the first balloon extrudes the second balloon after expanding, so that a contrast agent in the second balloon is gradually extruded out, the second balloon deforms, and the deformed second balloon is better attached to the narrow part of a blood vessel and can better adapt to the change of the inner diameter of a channel at a longer blood vessel.

The invention discloses a disposable balloon catheter with an opening and closing function, which belongs to the technical field of medical instruments and comprises a balloon, a balloon cavity and a catheter. The balloon is arranged on the outer side of the balloon cavity, and a water inlet communicated with the balloon is formed in the side wall of the balloon cavity; one end of the catheter is detachably connected with the balloon cavity and is used for filling water into the balloon; a valve structure for controlling water feeding and discharging is arranged in the balloon cavity; the catheter is of a double-layer structure, and a piston mechanism is arranged at the upper end of the inner-layer catheter and used for abutting against the valve structure to be communicated with the normal saline channel of the balloon. And a fixed balloon body is arranged between the upper end of the outer-layer catheter and the upper end of the inner-layer catheter and is used for butt joint of the catheter and the balloon cavity and conveying normal saline into the balloon. The catheter and the balloon cavity which are detachably connected are arranged, so that the balloon catheter is rapidly placed in a bleeding bronchial lumen through the bronchoscope during treatment, compression or blocking hemostasis is achieved, and discomfort and injury caused by long-time retention of the bronchoscope and the catheter in the airway of a patient are reduced.