29 results about "Cutting balloon" patented technology

The invention provides a nicking guide wire, a nicking balloon assembly and an intervention device. The nicking guide wire comprises a guide wire shaft and a cutting unit. The cutting unit has an expansion state and a compression state, the far end of the cutting unit is fixed to the guide wire shaft, and the near end of the cutting unit is of an expandable annular structure. The nick guide wire is configured such that when the nick guide wire cooperates with the balloon catheter, at least part of the distal end of the balloon catheter enters the interior of the cutting unit through the annular structure. The indented guide wire is provided with the cutting unit, the cutting unit is combined with a balloon catheter to achieve the balloon cutting function, due to the fact that the indented guide wire is separated from a balloon body, the trafficability and flexibility of the product are better than those of products such as a cutting balloon, and when the indented guide wire is applied to treatment of intracranial vessel moderate calcification lesions, blood vessel injuries are not likely to be caused; and operative complications are reduced. For serious calcification lesions of cardiovascular and peripheral blood vessels, plaque expansion can be achieved without additionally using a CTO balloon for pre-expansion, and the operation cost and the operation difficulty are reduced.

The invention 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 balloon body of the cutting balloon 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 balloon are enhanced, the turning performance of the cutting balloon in a blood vessel and the cutting performance of the balloon on lesions are improved, the blade is fixed to the groove through the blade body portion, and the cutting balloon is fixed to the blade body portion through the blade body portion. And the probability that the cutting balloon slips and is nested in plaques during cutting is greatly reduced.

The application discloses a blade cutting balloon suitable for coronary artery stenosis and relates to the technical field of cutting balloons. The balloon body is internally provided with a plurality of groups of cutting blades which are slidably connected to the inner wall of the balloon body and extend to the outside of the balloon body, and the balloon body is internally provided with a fixed pipe which is fixedly connected to the inner wall of the balloon body and is internally provided with a movable block.

The utility model discloses a cutting balloon catheter which comprises a balloon body, the side surface of the balloon body is fixedly connected with a catheter inner tube, the side surface of the catheter inner tube is fixedly connected with a catheter outer tube, the outer surface of the balloon body is fixedly connected with a cutting layer, and the upper surface of the cutting layer is fixedly connected with a cutting blade. The inner side of the balloon body is fixedly connected with an upper liquid medicine cavity and a lower liquid medicine cavity, one end of the upper liquid medicine cavity and one end of the lower liquid medicine cavity are provided with liquid outlet openings, the cutting layer is arranged to be a grid body, uneven expansion of the balloon can be restrained, and the situation that blood vessels are damaged due to local expansion of the balloon is avoided; the length deformation of the balloon during expansion can be effectively inhibited through the cutting blade on the surface of the balloon, the length of the expanded balloon is kept constant, the passing ability of the balloon catheter and the contraction performance of the expanded balloon are improved, the medicine liquid cavity is formed, medicine can better permeate into lesions, and forming and recovery after blood vessels are cut are facilitated.

The utility model provides a kind of nipple cutting balloon dilatation catheter, comprising: the balloon part of being arranged in the front part of catheter, the tube wall of the balloon part is wrapped with balloon, the outer surface of the balloon is equipped with multiple knife filaments, and the knife filament is used to be connected with high frequency generator.The utility model can be sent into or pulled out duodenal nipple in the guide of guide wire, and dilate duodenal nipple, when nipple sphincter stenosis appears, handle joint connects high frequency generator, and the knife filament on the surface of balloon can carry out electroincision effect to the tissue of stenosis, increase stenosis dilatation efficiency and effect.

The present invention relates to a cutting balloon dilatation catheter, comprising a balloon, a catheter, a cutting blade and a traction mechanism, wherein the cutting blade is connected to the balloon and has an outward opening, and the traction mechanism comprises a rotating tube with a distal end extending into the balloon and a flexible member that is windably arranged at the distal end of the rotating tube, the flexible member and the cutting blade being arranged in a one-to-one correspondence, one end of the flexible member being connected to the rotating tube, and the other end being connected to the inner wall of the balloon on the inner side of the cutting blade. The present invention can cause the balloon wall at the connection with the flexible member to deform and concave inward by the pulling action of the flexible member on the balloon, on the one hand pulling the cutting blade inward, thereby adjusting the exposed depth of the cutting blade; on the other hand, the deformation of the balloon wall squeezes the cutting blade, thereby adjusting the opening angle of the cutting blade. The pulling force of the flexible member can be controlled by rotating the rotating tube, thereby controlling the cutting depth and cutting range of the cutting blade, which is very convenient and has good cutting effect and safety.

A cutting balloon catheter with concealed blades is provided. A pressure channel communicated with the balloon is formed by a gap between the outer tube and the inner tube. The cutting assembly includes first support rings sleeved on the outer tube and a blade group, the first support rings are capable of generating radial elastic deformation and sliding freely. The push-pull tube is sleeved on the outer tube, and the protective bag is configured to encapsulate the balloon and the cutting assembly. When the cutting assembly is pushed to the balloon, after the balloon is expanded, the blade group cuts a section of the protective bag opposite to the balloon to expose the blade group. The catheter can pass through the complex and tortuous blood vessels to reach the lesion site, and realize effective cutting while reducing the damage to the blood vessels.

Medical apparatus usable and / or for use in transcatheter procedures and associated methods for cutting a structure at a target site within a subject. The medical apparatus can include a handle having a shaft with a cutting balloon coupled to a distal end portion of the shaft for cutting of a portion of anatomy or a portion of a previously implanted device at the target site within the subject. The cutting balloon can include one or more blades. The blades can be disposed in an inverted portion of the balloon or on an exterior surface of the balloon. In some implementations, the medical apparatus can be a prosthetic heart valve delivery apparatus and can include a valve-expanding balloon coupled to the distal end portion of the shaft. In some implementations, the cutting balloon is distal of the valve-expanding balloon.

The utility model discloses a cutting balloon, it includes: push rod, balloon head and inflation pipeline, the balloon head fixed setting in push rod one end, push rod is used for adjusting the balloon head reaches corresponding position, the balloon head sets up blade, inflation pipeline with balloon head intercommunication, through inflation pipeline to balloon head inflation, the balloon head inflation will the blade push out, to execute cutting action. The cutting balloon of the utility model can solve the problem that the middle occlusion section is located in the subintimal false lumen.

The invention discloses a cutting balloon catheter and a preparation method, and relates to the technical field of medical instruments.The cutting balloon catheter comprises a balloon and a cutting assembly arranged on the outer surface of the balloon, the cutting assembly comprises a cutting blade and an adhesive tape base, a protective layer is arranged on the surface of the cutting blade, and the cutting blade comprises a tool nose and a tool apron which are fixedly connected; the knife holder is fixed on the adhesive tape base, the adhesive tape base is adhered and fixed on the surface of the balloon, and stress strengthening areas are arranged at two ends of the adhesive tape base. By designing a cutting blade protection structure, tissue damage can be avoided, efficient blade bonding can be achieved by adopting a simple tool, and the bonding effect and the fatigue resistance of the balloon are improved.

The present application relates to a kind of impact cutting balloon catheter, and the inner tube is made of first segment, second segment, third segment, fourth segment, fifth segment, sixth segment and seventh segment with two ends open hollow tubular structure in turn connection and communication, second segment and fourth segment are specifically same rotation center line, rotation center line is parallel with the axis of second segment and fourth segment but not coincident, it further includes transmission shaft fixedly connected with second segment and fourth segment and rotor motor for driving transmission shaft rotation around its axis, transmission shaft rotation drives second segment and fourth segment rotation around rotation center line, the present application can be deflected by the centrifugal force of second segment and fourth segment of inner tube and the agitation of liquid filled in balloon, with frequency directional impact the inner wall of balloon, in turn drive balloon and cutting blade vibration, cutting blade directional impact hard plaque, so as to reach the cutting efficiency of more change and better cutting effect.

The invention discloses a blade cutting balloon, and relates to the technical field of blade cutting balloons, the blade cutting balloon comprises a balloon body, a catheter body, a blade assembly, a balloon outer layer film, a balloon inner layer film, a blade mounting seat, a depth limiting stopper, a first fixing ring and a second fixing ring; according to the invention, the inner layer film and the outer layer film are coaxially sleeved to form the closed space, and the liquid injection channel is combined, so that reliable balloon filling and pressure conduction are realized; by arranging the blade mounting base and the elastic angle adjusting piece, adjustable connection of the blade assembly is achieved, the angle of the blade can be changed according to the shape adaptability of the inner cavity of the blood vessel in the balloon dilatation process, unnecessary damage to the blood vessel is avoided, meanwhile, the cutting depth is accurately controlled through the depth limiting check block structure, the operation controllability is improved, and the working efficiency is improved. The structure not only improves the stability and safety of the interventional process, but also improves the lesion cutting efficiency, and effectively adapts to plaque and lesion conditions of different degrees.

The invention discloses a cutting balloon catheter and a using method thereof, and relates to the technical field of medical instruments.The cutting balloon catheter comprises an outer tube, a conveying tube is slidably connected to the interior of the outer tube in a penetrating mode, one end of the outer tube is fixedly connected with a first channel, a second channel and a third channel, and the side, away from the first channel, of the conveying tube is fixedly connected with a balloon body; blade bodies are annularly arranged on the outer surface of the balloon body at equal intervals, the blood vessel protection mechanism comprises an inflation tube and a protection layer, the protection layer is arranged on the outer surface of the balloon body in a sleeving mode, the blade bodies are located in the protection layer, and the protection layer can be arranged on the outer surfaces of the blade bodies in a sleeving mode; the vascular endothelium is prevented from being damaged in the conveying process of the blade body, and the blade body can be effectively prevented from being in direct contact with the vascular endothelium in the conveying process, so that the damage risk of vascular endothelial cells is remarkably reduced, the integrity of the vascular endothelium is maintained, and inflammatory reactions are reduced.

The application provides a scoring guide wire, a scoring balloon assembly and an interventional device. The scoring guide wire comprises a guide wire shaft and a cutting unit. The cutting unit has an expanded state and a compressed state. The distal end of the cutting unit is fixed to the guide wire shaft, and the proximal end is an expandable ring structure. When the scoring guide wire is combined with a balloon catheter, the distal end of at least part of the balloon catheter enters the interior of the cutting unit through the ring structure. The scoring guide wire of the application is provided with a cutting unit, which is used in combination with a balloon catheter to achieve the function of cutting the balloon. Since the scoring guide wire is separated from the balloon body, the passability and flexibility of the product are better than those of the cutting balloon and other products. When applied to the treatment of moderate calcification lesions in intracranial blood vessels, it is not easy to cause vascular injury and reduce surgical complications. For severe calcification lesions of cardiovascular and peripheral blood vessels, the expansion of plaques can be achieved without the need for additional use of a CTO balloon for pre-expansion, thereby reducing the cost and difficulty of the operation.

An illustrative tool 100 may include a housing 102 defining a central aperture 108 extending along a length of the housing, a plurality of blade pusher elements 104 spaced about a circumference of the housing, and a plurality of balloon pusher elements 106 spaced about a circumference of the housing. The plurality of blade pusher elements may each extend from a radially outward edge to a radially inward portion configured to extend into the central aperture. The plurality of balloon pusher elements may each extend from a radially outward edge to a radially inward end configured to extend into the central aperture. Each balloon pusher element of the plurality of balloon pusher elements may comprise two or more balloon pusher members.

This invention relates to a self-positioning balloon detonation device for well chutes. It includes a cut-resistant balloon, an explosive securing and protective assembly, a wellbore center positioning device, an inflation and pressure regulating assembly, an environmental monitoring assembly, a fan adjustment assembly, and an explosion-proof control assembly. The cut-resistant balloon adopts a pear-shaped or heart-shaped structure, wider at the top and narrower at the bottom. The wellbore center positioning device utilizes a bottom-mounted reversing positioning wheel assembly, a heavy-duty anti-slip reversing positioning wheel seat, and a ground-based one-way damping cable reel assembly. The hollow core cable integrates three functions: inert gas inflation, sensor data transmission, and detonation circuitry. The environmental monitoring assembly mounts sensors such as cameras via a universal snap-on mounting base. The fan adjustment assembly supports autonomous escape from obstructions and oblique floating in tilted wells. The inflation and pressure regulating assembly uses helium as the medium. The explosion-proof control assembly supports remote, safe detonation from the ground. This device achieves high-precision plugging and detonation, real-time environmental visualization, and active obstruction escape, improving operational safety and environmental adaptability.

The invention relates to the technical field of medical engineering, and discloses a cutting balloon and medical equipment. The cutting balloon comprises a balloon body, a cutter assembly and a hydrophilic coating. The multiple cutter assemblies are arranged on the outer wall of the balloon body and distributed in the circumferential direction of the balloon body at intervals. A hydrophilic coating is arranged on the outer wall of the balloon body. When the cutting balloon moves in a blood vessel, in a wet state, the hydrophilic coating is activated, the hydrophilic coating has high lubricating performance when making contact with blood, the penetrating performance of a cutter assembly of the cutting balloon at the complex tortuous position of the blood vessel can be improved, the trafficability of the cutting balloon is improved, and the passing success rate is increased in the process that the cutting balloon leads to a diseased region or retracts; and the operation safety and convenience are improved.

The present invention discloses a cutting balloon catheter and its preparation method, which relates to the field of medical device technology. The catheter comprises a balloon and a cutting assembly disposed on the outer surface of the balloon. The cutting assembly comprises a cutting blade and a rubber strip base. The cutting blade is provided with a protective layer on its surface. The cutting blade comprises a fixedly connected blade tip and a blade holder. The blade holder is fixed to the rubber strip base, and the rubber strip base is adhesively fixed to the surface of the balloon. Stress-enhanced zones are provided at both ends of the rubber strip base. The present invention avoids tissue damage by designing a cutting blade protective structure. Furthermore, the invention utilizes simple tooling to achieve efficient blade bonding, thereby improving bonding effectiveness and the fatigue resistance of the balloon.

The present application relates to a kind of cutting balloon catheter, it includes catheter, balloon, spiral guide rail, cutting piece and adjusting piece, catheter is provided with the first cavity for guide wire and the second cavity for gas or liquid, balloon is sleeved in the outer periphery of catheter distal end, balloon interior is communicated with the second cavity, spiral guide rail is attached and wound in the outside of balloon, cutting piece is slidably connected on spiral guide rail, adjusting piece is telescopically connected between cutting piece and catheter proximal end along catheter axis, balloon and spiral guide rail all have radial shrinkage state and expansion state, spiral guide rail can expand along with the expansion of balloon, shrink along with the shrinkage of balloon, when balloon and spiral guide rail are in expansion state, make adjusting piece elongation or shrinkage, cutting piece has the tendency of sliding along spiral guide rail, cutting piece is cut vascular lesion plaque while sliding along spiral guide rail.The cutting balloon catheter of the present application can realize more efficient, safe cutting vascular lesion plaque.

The invention discloses a coronary artery cutting balloon catheter with a medicine carrying function, and relates to the technical field of cutting balloon catheters.The coronary artery cutting balloon catheter comprises an outer tube, and a balloon capable of expanding in the radial direction is arranged at the far end of the outer tube in a sealed mode; the inner tube is coaxially arranged in the outer tube in a sleeved mode, the far end of the inner tube is fixedly connected with the far end of the outer tube, the inner tube and an inner cavity of the balloon form a fluid channel, and an annular cavity between the inner tube and the outer tube forms an extension section of the fluid channel; the cutting knife assemblies are attached to the outer surface of the balloon; the far end of the outer tube is further connected with a first knife protection ring and a second knife protection ring which are located at the two ends of the balloon, and a plurality of knife protection pull belts corresponding to the cutting knife assemblies are connected between the first knife protection ring and the second knife protection ring. When the sacculus is in a collapsed shape, the cutter protecting drawstring correspondingly covers the cutter assembly, when the sacculus expands in the radial direction, the cutter protecting drawstring is driven by the first cutter protecting ring and the second cutter protecting ring to deviate from the cutter assembly, and safety is higher.

The invention provides a nipple cutting balloon dilatation catheter which comprises a balloon part arranged on the front portion of the catheter, the catheter wall of the balloon part is wrapped with a balloon, the outer surface of the balloon is provided with a plurality of knife wires, and the knife wires are used for being connected with a high-frequency generator. The duodenal papilla dilator can be fed into or pulled out of the duodenal papilla under the guide of the guide wire to dilate the duodenal papilla, when the papilla sphincter is narrow, the handle connector is connected with the high-frequency generator, the knife wire on the surface of the balloon can electrically cut tissue at the narrow position, and the narrow dilation efficiency and effect are improved.

The utility model discloses an arterial administration cutting balloon catheter, which relates to the technical field of cutting balloon catheters and comprises a balloon body, a pushing catheter and a catheter connecting seat, two ends of the pushing catheter are respectively and fixedly communicated with the balloon body and the catheter connecting seat, and an expansion mechanism is arranged in the pushing catheter. The dilation mechanism comprises a segmentation tube, the surface of the balloon body is provided with drug delivery mechanisms which are arranged circumferentially, each drug delivery mechanism comprises a cutting knife, a drug delivery cavity and a connecting catheter, the balloon catheter is cut through artery drug delivery, the balloon body is pushed to an operation position by pushing the catheter, and the balloon body is pushed to an operation position by pushing the catheter through a catheter connecting seat. Various external devices are communicated with the pushing catheter, the pushing catheter is divided into two parts through the dividing tube, and then the balloon body can be expanded conveniently, vascular lesion plaques are cut and removed through the cutting knife, medicine is conveyed to the surface of the cutting knife through the connecting catheter, medicine is fed to the cutting position in real time, and the medicine feeding accuracy is improved.

The application discloses a coronary cutting balloon catheter with a drug loading function, and relates to the technical field of cutting balloon catheters, which comprises an outer tube, a balloon capable of being radially expanded is arranged at the distal end of the outer tube, an inner tube is coaxially arranged in the inner part of the outer tube, the distal end of the inner tube is fixedly connected with the distal end of the outer tube, a fluid channel is formed between the inner tube and the inner cavity of the balloon, an annular cavity between the inner tube and the outer tube forms an extension section of the fluid channel, a plurality of cutting knife assemblies are attached to the outer surface of the balloon, the distal end of the outer tube is further connected with a first knife guard ring and a second knife guard ring located at the two ends of the balloon, a plurality of knife guard pull belts corresponding to the cutting knife assemblies are connected between the first knife guard ring and the second knife guard ring, when the balloon is in a collapsed state, the knife guard pull belts correspondingly cover the cutting knife assemblies, when the balloon is radially expanded, the knife guard pull belts deviate from the cutting knife assemblies under the drive of the first knife guard ring and the second knife guard ring, and the safety is higher.

The cutting balloon comprises a balloon body and a plurality of blade assemblies arranged on the outer wall of the balloon body in the axial direction, each blade assembly comprises a blade and a tool apron, and each blade is of a long-strip-shaped structure and comprises a cutting edge perpendicular to the outer wall of the balloon body and back on to the balloon body; the blade holder is of a sheet-shaped structure and used for fixing the blade to the balloon. The tool apron comprises a connecting part and reinforcing parts, the connecting part is of a long-strip-shaped structure, and the reinforcing parts are of a tooth-shaped structure and connected to the two sides, extending in the axial direction, of the connecting part. The top face of the connecting part is used for being connected with a blade, the bottom face of the connecting part and the bottom face of the reinforcing part are fixed to the outer wall of the balloon through adhesive, and tooth-shaped gaps of the reinforcing part are filled with the adhesive. The invention further provides a preparation method of the cutting balloon. The cutting balloon is simple in structure, and the blade assembly is firmly connected with the balloon.

The invention discloses a blade cutting balloon suitable for coronary artery stenosis, and relates to the technical field of cutting balloons. Comprising an air pump, a pressure indicating gauge is installed on the outer wall of the end of the air pump, a connecting piece is arranged at the end of the air pump, a catheter is connected to the other end of the connecting piece, a balloon body is fixedly connected to the end, away from the connecting piece, of the catheter, and multiple sets of cutting blades extending to the outside of the balloon body are slidably connected to the inner wall of the balloon body. The inner wall of the balloon body is fixedly connected with a fixed tube, and a movable block is arranged on the inner wall of the fixed tube. By means of continuous pressurization of the air pump, air can enter the cavity of the fixing tube, the extension rod is driven to drive the cutting blade to stretch out in the cutting direction, then targeted deep cutting pressure can be applied to calcified tissue in a blood vessel, the problem of damage caused by secondary cutting operation is avoided, and the cutting efficiency is improved. And the repeated cutting frequency of the cutting blade is reduced, and the efficiency and effect of cutting the calcified tissue are improved to a certain extent.

The utility model relates to a kind of medicine delivery cutting balloon dilatation catheter, it includes inner tube, intermediate tube, outer tube, balloon and cutting tool, intermediate tube is sleeved on inner tube, intermediate tube distal end is fixedly closed connection with inner tube;Outer tube is sleeved on intermediate tube;Balloon distal end is fixedly connected with inner tube distal end, proximal end is fixedly connected with outer tube distal end, balloon inside is connected with the balloon filling passage between outer tube and intermediate tube;Cutting tool is fixedly set on the outer surface of balloon, and extend along parallel to balloon axis direction, cutting tool is equipped with medicine injection through-hole and along the medicine drainage groove of cutting tool axial extension, medicine injection through-hole is connected with medicine drainage groove and the medicine channel between inner tube and intermediate tube.The utility model can be higher efficient and more uniform, comprehensive drug delivery while cutting, improve the cutting and drug treatment effect to intravascular plaque, can effectively reduce the occurrence of vascular restenosis, improve the treatment effect and life quality of patient.

The invention provides a cutting balloon catheter and a folding method of a cutting balloon. The cutting balloon catheter comprises a catheter body and a cutting balloon arranged at the far end of the catheter body in a sleeving mode. The cutting balloon comprises a balloon body and a strip-shaped blade arranged on the outer surface of the balloon body. The balloon body has a folded state, in the folded state, the balloon body comprises a plurality of lobes, and part of the lobes abut against the side wall of the strip-shaped blade; the maximum height of the part, abutting against the side wall of the blade, of the leaf is larger than or equal to the radial height of the blade. The leaflets formed by the cutting balloon in the compressed state are wound and folded, so that at least part of the leaflets abut against the side wall of the blade, the height of the leaflets abutting against the side wall of the blade is not lower than the highest point of the blade, and the risk that the blade is obviously higher than the leaflets and is exposed outside, and consequently blood vessels are accidentally injured is reduced; the overall uniformity of the balloon is high, and the excellent passing performance of the product in the blood vessel is guaranteed.

The application discloses a balloon catheter for linearly cutting gland tissues, which comprises a balloon body, an elastic connecting piece and a linear cutting piece, the middle part of the elastic connecting piece is fixed to the surface of the balloon body, the linear cutting piece is arranged on the middle part of the elastic connecting piece, the two ends of the elastic connecting piece are fixedly connected with the two ends of the balloon body, and the position between the middle part of the elastic connecting piece and the end part of the elastic connecting piece is separated from the balloon body. The application solves the technical problem that the cutting balloon has poor expandability and poor applicability.

The utility model belongs to the technical field of medical instruments, and particularly relates to a cutting balloon dilatation catheter which comprises a balloon, a catheter assembly communicated with the near end of the balloon and an inner tube arranged in the balloon and the catheter assembly in a penetrating mode. An elastic cutting assembly is arranged on the periphery of the balloon, and a knife-shaped cutting structure is arranged on the side, away from the balloon, of the elastic cutting assembly. The balloon comprises conical sections located at the two ends and a cylindrical section connected between the two conical sections, and the elastic cutting assembly is at least separated from the cylindrical section of the balloon; after the balloon is decompressed and contracted, the elastic cutting assembly retracts to be in a pipe cavity state under the elastic effect of the elastic cutting assembly. According to the cutting balloon dilatation catheter, the elastic cutting assembly is designed to be of a structure separated from the balloon, self-retraction of the elastic cutting assembly is achieved, the balloon has the excellent retracing property, damage to the blood vessel wall or excessive dilatation can be reduced through the excellent retracing property, and the operation safety performance is improved.