21 results about "Balloon dilatation" patented technology

The utility model provides a split type kirschner wire and a kit for an orthopedic surgery robot, and belongs to the technical field of kirschner wires, the split type kirschner wire comprises a front kirschner wire body used for puncturing bones and a rear kirschner wire body used for being connected with an end effector of the orthopedic surgery robot, the front kirschner wire body is detachably connected with the rear kirschner wire body. Compared with Kirschner wire bending operation in the prior art, after the split type Kirschner wire is driven into the human body, the front Kirschner wire body with the proper length can be obtained more conveniently and safely, the problem of positioning displacement or loss caused by excessive pulling of the Kirschner wire is solved, and the Kirschner wire is more convenient to use. After the front kirschner wire body is detached and separated, due to the fact that the connecting end of the front kirschner wire body is smooth and clean, follow-up balloon dilatation kyphoplasty or pedicle screw implanting operation is facilitated, operation risks are reduced, and related operation operations can be carried out more safely, more reliably and more conveniently.

This invention relates to the field of shock waveguide technology and discloses a spring electrode shock waveguide, comprising a slender carrier and a balloon. The space formed between the balloon and the carrier is an annular channel for fluid to enter and achieve inflation. First, the electrode in the guide tube is designed as a spring-type spiral structure and wound around the surface of the carrier, which can provide good electrical contact and make the electrode have excellent ductility, solving the problem of large stress on the electrode during the deformation of the balloon under fluid compression. Through the design of a first support mechanism and a second support mechanism, the first support mechanism is connected between two adjacent outer walls of the electrode, providing axial support force for the electrode, and the second support mechanism is connected between the inner wall of the balloon and the outer wall of the electrode, providing radial support force for the electrode. This reduces the pressure on the electrode when the internal pressure of the balloon increases and the balloon expands, further solving the stress problem of the electrode during the deformation of the balloon.

This invention provides a hollow balloon and protective umbrella integrated device, belonging to the field of medical device technology. The device includes a delivery tube, a cylindrical balloon, and a protective umbrella. The cylindrical balloon is located at the distal end of the delivery tube and has a coaxially arranged hollow cavity at both ends for blood flow. The sidewall of the cylindrical balloon has a receiving chamber for holding the filling medium. The protective umbrella is integrated at a predetermined distance from the distal end of the cylindrical balloon to intercept emboli that may fall during balloon support. During operation, the cylindrical balloon and protective umbrella are delivered synchronously with the delivery tube to reduce operational steps. This invention primarily addresses the technical problems in existing technologies, such as interrupted blood flow during balloon expansion, cumbersome operational steps leading to low surgical efficiency, and high risks associated with multiple instrument operations.

The invention discloses an intracranial artery balloon dilatation axial stress monitoring system and method based on curvature ratio quantitative analysis, and belongs to the field of intelligent medical treatment. The system comprises an image acquisition and processing module, a curvature ratio calculation and mechanical inversion module, a risk assessment and early warning module and a visual interaction module. On the basis of the principles of film mechanics and contact mechanics, a mechanical causal chain of a balloon-plaque contact interface from geometric asymmetry to axial stress is completely disclosed; asymmetric plaques cause non-uniform stretching of balloons on two sides of the lowest point; according to the method, the curvature ratio R is defined to be equal to C / D to quantify the stretching degree, the curve length C is a path (left side) from a left end point A to a lowest point L and a path (right side) from the lowest point L to a right end point B in an effective analysis area, and the linear distance D is the Euclidean distance from mark points M1 and M2 to a projection point P of the lowest point; the difference value delta R of the curvature ratios of the two sides is equal to | Rleft-Rright |, and the stretching unevenness is directly quantized; intra-membrane tangential tension unbalance is caused by uneven stretching, a couple trend for promoting a balloon to move is generated, the trend is balanced by static friction force, and the counter-acting force is the axial force acting on plaques and is a direct reason for complications such as interlayers and shedding. The axial stress direction points to the same side with the large curvature ratio side, and the relative size is represented by delta R. The system automatically calculates delta R through real-time image processing and carries out dynamic risk assessment, and visual early warning is provided for an operator in a visual graphic form.

This invention discloses a shockwave device, comprising an inner tube; a balloon connected to the inner tube, the balloon having a accommodating cavity; a support wire, at least partially located within the accommodating cavity, the distal end of the support wire connected to the inner tube; and an electrode assembly disposed on the support wire, the radial distance between the electrode assembly and the balloon being constant. This invention, by placing the support wire within the accommodating cavity and the electrode assembly on the support wire, enables the electrode assembly to approach the inner wall of the balloon while maintaining a constant radial distance during balloon expansion, reducing the attenuation of shockwave energy propagation, improving treatment effectiveness, and simultaneously avoiding balloon rupture, thus enhancing treatment safety.

The utility model provides a medicine balloon and a blood vessel dilatation device using the same. The medicine balloon comprises an outer balloon and a dilatation balloon arranged in the outer balloon. The expansion bag comprises a plurality of leaf separating bags with windmill leaf-shaped structures; a plurality of leaf separating bags with windmill leaf-shaped structures form a gap channel during expansion, and blood circulation is allowed to be maintained in the expansion process, so that the ischemia risk of the far-end tissue of a target blood vessel is reduced; the method is particularly important for complex lesions needing long-time expansion; and the occurrence of related complications can be reduced. Meanwhile, due to the multi-leaf structure of the leaf-dividing bag, the leaf-dividing bag of the windmill leaf-shaped structure can fully expand the narrow part; the treatment efficiency and the success rate are improved; the innovative dilation equipment is not only suitable for treatment of common vascular stenosis, but also has important application value for special requirements of drug balloon dilation treatment and the like.

The invention discloses a balloon dilatation valve with a clamping piece, and relates to the technical field of medical instruments, the balloon dilatation valve comprises a valve support capable of expanding in the radial direction, a functional valve arranged on the inner side of the valve support and the clamping piece connected to the valve support; the clamping piece can move relative to the valve support and is matched with the valve support to clamp the autologous valve leaflet, the clamping piece comprises a plurality of rebounding components with deformation parts, and the rebounding components are converted between bunchy lines and fan-shaped distribution through deformation of the deformation parts. The valve stent further comprises a control sleeve which is used for restraining the clamping piece in the conveying state and adjusting and controlling the included angle between the clamping piece and the valve stent by changing the restraining degree. The mitral valve anterior leaflet is clamped and shortened through the clamping piece, and left ventricular outflow tract obstruction is effectively prevented; meanwhile, stable clamping force is formed by the clamping piece and the valve support, and displacement of the valve is prevented; in addition, the delivery system is small in outer diameter, good in trafficability and suitable for patients with small mitral valve openings and small heart cavities.

The utility model relates to the technical field of balloon dilatation catheters, and particularly discloses a balloon dilatation catheter with a function of preventing a pipeline from falling off, which comprises a main body mechanism comprising a catheter assembly, a balloon installed on the catheter assembly and a connecting assembly; the fixing mechanism comprises a fixing assembly installed on the connecting assembly and a clamping plate assembly clamped and embedded in the fixing assembly in a sliding mode. According to the utility model, the handle is pulled until the distance between the clamping plate body and the fixing block is increased to a degree that the clamping plate body can be clamped on a workbench, and then the handle is loosened, so that the spring pushes the limiting ring to move due to deformation recovery, and the clamping plate body is further driven to recover to the original position, thereby firmly locking and fixing equipment on the workbench. The stability of the main body mechanism on the workbench is ensured, shaking in the operation process is effectively prevented, and the accuracy and safety of an operation are improved.

The invention discloses a wireless pressure monitoring system for balloon dilatation and a data recovery method. The system comprises a tubular wireless pressure sensing unit connected between a pressure pump and a catheter, and a medical pressure sensor with an isolating membrane design is adopted in the tubular wireless pressure sensing unit to ensure safety; and the independent display is arranged beside the radiography main screen. The display provides digital display which is intuitively compatible with a mechanical dial plate and has higher precision, the whole operation process from negative pressure exhaust to positive pressure expansion is completely covered, and the numerical value is accurate to one decimal point. The system collects data in a fixed period and records timestamps, and pressure data and radiography perspective videos can be accurately matched and repanned through the timestamps after an operation. A traditional manual counting mode is directly replaced, the problems of information splitting, high cognitive load and data black box are solved through medical-level safety design, full-process quantitative display and visual field unification, existing equipment does not need to be transformed, the structure is simple, and clinical popularization is easy.

The invention discloses an information processing system, method and device for position prediction and a medium, and relates to the technical field of information processing, and the system comprises a data input interface which is used for receiving an enhanced image of a pulmonary artery of a CTEPH object; the three-dimensional modeling module is used for creating a target three-dimensional model of the blood vessel of the pulmonary artery based on the enhanced image; the parameter extraction tool is used for performing fluid dynamic operation on the target three-dimensional model based on a preset blood flow boundary condition and extracting global blood flow parameters and local blood flow characteristic parameters of the pulmonary artery so as to screen at least one candidate focus area; the virtual balloon adjustment module is used for performing virtual balloon expansion form adjustment on the candidate focus area according to the lesion type of the candidate focus area; and the position prediction module is used for performing fluid dynamic operation on the new target three-dimensional model obtained after adjustment based on a preset blood flow boundary condition, and determining the final position of the balloon dilatation operation from the candidate focus area. Invalid candidate areas are pre-screened through a virtual verification link;

The present application relates to a kind of score balloon, including balloon body;Score part, score part is fixed to the two ends of the outer surface of balloon body, and multiple are evenly distributed along the circumferential direction, score part is the woven tube structure of axially elastic elongation, and the cavity of score part is placed with the hardening component that can freely move.The score part designed in the present application can be axially telescopic when balloon is expanded, has better balloon adhesion and stenosis lesion passability, effectively avoids the displacement, winding and "banana effect" of score part in expansion process;And the mesh structure on woven tube score part can also embed plaque tissue, reach more optimal expansion effect in the process of axial traction.

The utility model relates to the field of medical apparatus and instruments, disclose a kind of electronic choledochoscope, the choledochoscope includes head end, curved part, insertion part, operating part and connecting part, head end is equipped with first pressure sensor for real-time monitoring internal pressure;Insertion part includes mirror body pipe and the sleeve tube that can be moved along its axial direction, sleeve tube front end is equipped with balloon, balloon inner wall is equipped with second pressure sensor for real-time monitoring balloon expansion pressure;Operating part is equipped with sleeve tube control mechanism and balloon pressurization interface of the control sleeve tube movement.The utility model provides into support by movable sleeve, realizes safe controllable expansion by balloon pressure monitoring, guarantees the pressure stability in operation by head end pressure monitoring, effectively solve the problem that choledochoscope enters biliary duct difficultly, support is insufficient, expansion damage and pressure out of control, improve the safety and efficiency of operation.

A stent made from a material comprising a polymer is disclosed. The stent has a pre-crimp diameter and a wall thickness such that a ratio of the pre-crimp diameter to the wall thickness is between 30 and 60. The stent has a pattern of interconnected elements. The interconnected elements including a plurality of rings connected by links, wherein each ring includes struts and crowns, and the struts are configured to fold at the crowns when the stent is crimped to the balloon.

The invention relates to the technical field of nerve and blood vessel intervention, in particular to a pushing-enhanced nerve and blood vessel dilation catheter which comprises a far-end rapid exchange stent mechanism, a guide wire used for pushing the far-end rapid exchange stent mechanism into nerve and blood vessels and a near-end pushing mechanism. The near-end pushing mechanism is connected with the far-end rapid exchange stent mechanism in parallel through the transition connecting part, the guide wire travels in the far-end rapid exchange stent mechanism along the outer side of the near-end pushing mechanism and is used for reducing unnecessary deformation of the guide wire, and the balloon dilatation stent is preassembled on the far-end rapid exchange stent mechanism and is connected with the near-end pushing mechanism. The problems that in the prior art, a neurovascular dilation catheter is prone to deformation and even bending in the operation process, the direction of pushing force is difficult to change, the in-place rate of a stent is reduced, meanwhile, when passing through a bent part of a blood vessel, bounce is prone to occurring, the controllability of the far end of the stent becomes poor, the possibility that the far-end blood vessel is torn and perforated is likely to be increased, and the stent cannot be damaged are solved. And the surgical risk is increased.

The invention provides a special balloon dilatation type auxetic structure partition stent for aortic constriction, which comprises a skeleton and a covering film, the skeleton comprises an auxetic supporting area and two flexible areas, the auxetic supporting area is arranged between the two flexible areas at an interval, and the covering film is arranged between the auxetic supporting area and the two flexible areas. The auxetic supporting area and the smooth area are covered with the covering film, the auxetic supporting area comprises at least two circles of auxetic units, the at least two circles of auxetic units are arranged in the axial direction, every two adjacent circles of auxetic units are connected, each auxetic unit comprises a plurality of polygonal grids arranged in the circumferential direction, and the polygonal grids are connected with the polygonal grids. The polygonal grid is provided with a pair of inward concave corner parts; reinforcing rings are arranged in at least part of the polygonal grids and connected with the pair of inner concave corner portions through reinforcing wires respectively, and the geometric adaptability of the polygonal grids and lesion blood vessels is improved.

The utility model discloses a hepatobiliary balloon dilatation tube, and particularly relates to the technical field of medical instruments, the hepatobiliary balloon dilatation tube comprises a pressurizing tube, one end of the pressurizing tube is inserted and fixedly connected with a hepatobiliary balloon dilatation tube, one end of the hepatobiliary balloon dilatation tube is provided with a balloon body, and one end of the pressurizing tube is fixedly connected with an insertion nesting block. One end of the inserting and nesting block is inserted into the liver and gall balloon dilatation tube, an auxiliary block is fixedly connected to the outer end of the liver and gall balloon dilatation tube, a first inserting block is inserted into the outer end of the auxiliary block, and the first inserting block is fixedly connected with the pressurizing tube; through the design of the multi-layer composite material balloon, the outer layer polyimide material provides high strength and corrosion resistance, the inner layer silica gel material is soft, and damage to the bile duct wall is reduced; spiral textures on the outer wall increase friction force, prevent slippage and uniformly distribute expansion pressure; the inserting design of the pressurizing pipe and the expansion pipe realizes quick disassembly and assembly.

The Eustachian tube balloon auxiliary instrument with the suction function comprises a fixing tube and a push-pull rod coaxially arranged in the fixing tube in a sliding mode from the tail of the fixing tube, and a guide tube is installed at the head of the fixing tube; a connecting rod mechanism is fixed to the head of the push-pull rod and fixed in the rubber plug, and the push-pull rod, the fixing tube, the rubber plug and an inner cavity of the guide tube are communicated to form a balloon conveying channel. In the process that the push-pull rod is pushed towards the head to insert the balloon catheter into the eustachian tube, the rubber plug is driven to be compressed inwards through the connecting rod mechanism; after balloon dilatation is completed, in the process that the push-pull rod pulls the balloon catheter to retreat from the interior of the auditory tube to the tail, the rubber plug is driven to expand outwards through the connecting rod mechanism, and the rubber plug is attached to the inner wall of the fixing tube. According to the sacculus auxiliary instrument for the Eustachian tube, the Eustachian tube of a patient is expanded through the embedded sacculus, and suction of secretions such as hydrops and the like can be synchronously completed in the process that the sacculus catheter retreats from the Eustachian tube after expansion is completed.

The invention provides a novel medical balloon pressure pump device which is characterized in that the novel medical balloon pressure pump device comprises a pump body used for pumping a medium into a balloon and pressurizing or depressurizing the balloon to enable the balloon to expand or retract; the monitoring part comprises a pressure monitoring assembly arranged in the pump main body and used for monitoring the volume of the balloon and a flow monitoring sensor used for monitoring the volume of an input medium in the balloon; the control part is electrically connected with the pressure monitoring assembly and the flow monitoring sensor and used for processing and displaying data monitored by the pressure monitoring assembly and data monitored by the flow monitoring sensor.

A method of performing angioplasty includes accessing an artery, inserting a tubular balloon into to the artery in a low-profile operating mode, the tubular balloon constrained in a generally helical shape, and forming a lumen within the generally helical shape by expanding the tubular balloon into a high-profile operating mode. A system for creating a lumen is also disclosed.

The utility model provides strength detection equipment for a balloon dilatation catheter, and relates to the technical field of medical equipment, the strength detection equipment comprises a bottom plate, a guide rod, a top plate, a sliding plate and a fixed plate, a fixed assembly is arranged between the sliding plate and the fixed plate, and the top of the top plate is provided with a lifting mechanism; the movable block is pulled to be separated from the positioning block, the rubber sleeve clamped with the balloon dilatation catheter is placed in the fixing hole in the positioning block, the movable block and the positioning block are driven to be automatically closed through elastic force generated by the torsion spring after the hand is loosened, the two threaded blocks are combined to form a cylinder structure, the fixing sleeve is screwed into the outer side of the cylinder, and the balloon dilatation catheter is fixed. The positioning block and the movable block are used for completely connecting the positioning block and the movable block into a whole, meanwhile, the positioning block and the movable block clamp the rubber sleeve through the fixing holes, the two ends of the balloon dilatation catheters are fixed to the sliding plate and the fixed plate into a whole, the multiple balloon dilatation catheters can be fixed at a time, and the accuracy of the detection result is improved.

An artificial heart valve may include a balloon-expandable frame extending between an inlet end and an outlet end, a plurality of artificial valve leaflets mounted within the frame, and an inner skirt positioned between the plurality of artificial valve leaflets and the frame. The frame may include a first row of rhomboid cells at the inlet end of the frame, a second row of rhomboid cells, and a row of outlet cells positioned at the outlet end of the frame. Each cell in the row of outlet cells does not have to be rhomboid, and in the expanded state of the frame, each cell in the row of outlet cells may have a larger area than each cell in the first and second rows of rhomboid cells combined. Each outlet cell may be defined at least partially by a commissure attachment shape, and each outlet cell may lack symmetry.