45 results about "Balloon dilatation" patented technology

The invention relates to the technical field of minimally invasive vascular interventional operations, in particular to an adjustable balloon expansion pressure pump and an intelligent control method thereof.The method comprises the steps that a real-time image of a connecting pipe is obtained based on perspective imaging equipment, positioning information of a marker in the connecting pipe is recognized, and an initial parameter set is generated; constructing a fluid model according to the initial parameter set, and generating a fluid parameter set by taking distance information between the first identification body and the second identification body as a constraint condition; controlling pump body output pressure according to the fluid parameter set to generate a pre-expansion parameter set; the fluid model is updated based on the pre-expansion parameter set, the pump body is controlled to execute a pressure instruction in the dynamic pressure sequence, a second change value of the distance information is obtained, and a regulation and control data set is generated according to the second change value; and optimizing the regulation and control data set, and controlling the output pressure of the pump body to a target value until the balloon is completely opened. The success rate and safety of balloon dilatation are remarkably improved, and the balloon dilatation process is more controllable and efficient.

The utility model discloses an intracranial vascular stenosis treatment device which is provided with a far end and a near end which are opposite to each other, and comprises an inner tube, an outer tube and an inner tube, the balloon body comprises a balloon wall, the balloon wall forms a balloon cavity on the periphery of the inner tube, and the balloon wall is provided with an optical distribution structure; the outer tube is arranged outside the inner tube in a sleeving mode, the far end of the outer tube is communicated with the balloon cavity, and a radial gap between the outer tube and the inner tube serves as a fluid channel communicated with the balloon cavity; the light-emitting component is located in the balloon cavity and provides first light rays, the first light rays are diverged towards the periphery of the balloon body through the optical distribution structure, and the first light rays are 400 nm to 1200 nm. According to the intracranial vascular stenosis treatment device, the first light rays which are evenly distributed are used for repairing the inner wall of the blood vessel in the balloon dilatation process, full dilatation is achieved as much as possible on the premise that safety is guaranteed, and meanwhile the first light rays play a role in restraining stenosis.

The invention relates to the technical field of medical instruments, and discloses a drug coating balloon with a multi-layer structure and a preparation method thereof.A bottom layer of a drug coating, a drug layer and a protective layer are sequentially manufactured on the balloon from inside to outside, the balloon is in a full state when a bottom layer solution and a drug layer solution are sprayed, then the balloon is folded in a sectioning mode, and the drug coating balloon with the multi-layer structure is obtained. And spraying a protective layer solution. The outer layer is a fat-soluble protective layer, the firmness of the dried coating is high, the coating is hardly dissolved when making contact with body fluid, it is guaranteed that the coating can always cover the surface of the medicine layer in the conveying process, the medicine layer is not directly exposed to the body fluid environment, early release is avoided, and medicine conveying loss is reduced. The bottom layer is slightly soluble in water and is always attached to the surface of the balloon before and after the balloon is expanded, and extra particles are not added; the combination between the bottom layer and the medicine layer is strong before the balloon is expanded, the bottom layer is slightly soluble after the balloon is expanded and the bottom layer is in contact with body fluid, the interface combination with the medicine layer is weakened, the medicine layer falls off and is dissolved, and the treatment effect is fully released.

The invention provides a balloon and protective umbrella integrated device of a hollow structure, and belongs to the technical field of medical instruments.The device comprises a pushing pipe, a cylindrical balloon and a protective umbrella, the cylindrical balloon is arranged at the far end of the pushing pipe, the cylindrical balloon is coaxially provided with a hollow cavity channel with the two ends communicated, the hollow cavity channel is used for blood flow to penetrate through, and the protective umbrella is arranged in the hollow cavity channel. A containing cavity used for containing a filling medium is formed in the side wall of the cylindrical balloon. The protective umbrella is integrally arranged at the far end which is a set distance away from the cylindrical balloon and is used for intercepting the falling emboli in the supporting process of the cylindrical balloon; during working, the cylindrical balloon and the protective umbrella synchronously realize conveying along with the conveying catheter, so that the operation steps are reduced; the technical problems that in the prior art, during balloon dilatation, blood flow is interrupted, operation steps are tedious, operation efficiency is low, and the risk of multi-instrument operation is high are mainly solved.

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.

The invention provides a balloon dilatation catheter capable of being filled in a segmented mode, and belongs to the technical field of balloon dilatation catheters. The balloon dilatation catheter comprises a catheter body, an operating handle and a balloon body, the catheter body is used for being guided into a target blood vessel, and a filling channel extending in the axial direction is formed in the catheter body; the operating handle is arranged at the near end of the catheter body and is used for filling and discharging the filling medium into the filling channel; the balloon body is arranged at the position, close to the far end by a set distance, of the catheter body, a plurality of filling cavities are formed in the balloon body in the axial direction, a filling channel is communicated with the filling cavity at the farthest end, and a partition assembly is arranged between any two adjacent filling cavities and used for ensuring that the filling cavities are communicated with the filling cavity at the farthest end in the balloon body filling process. The plurality of filling chambers are sequentially filled from the far end to the near end; the balloon dilatation catheter is mainly used for solving the technical problems that in the prior art, a balloon dilatation catheter is integrally and synchronously filled and easily slips at a narrow blood vessel part, and a narrow area is difficult to accurately dilate.

A passive lung simulator device is provided. It includes a casing or box that includes a first lung simulator balloon; an air collector coupled to one end of the first balloon; a first set of servo valves, arranged in series, connected to the air collector via air flow conduits; and a connection element for a mechanical ventilator. The servo valves are configured to independently recirculate the air flow passing through them to the air collector, expanding the balloon. It also includes a first set of cams to be actuated by a servomotor to modify the compliance or capacity of the balloon simulator through the rotation of the first set of cams; and a communications module connected to the first set of servo valves and the first set of cams, with wireless connection to a remote computing device to receive instructions to simulate different pulmonary pathologies.

The utility model discloses a novel biliary tract balloon dilatation device, and relates to the technical field of gallbladder dilatation, and the novel biliary tract balloon dilatation device comprises a dilatation assembly; the expansion assembly comprises an expansion rod and an expansion block; the expansion rod is cylindrical; the expansion block is in a vertically-through circular truncated cone shape, the expansion rod is located in the expansion block, and the end, with the largest diameter, of the outer ring of the expansion rod is arranged at one end of the expansion rod. The expansion block comprises expansion plates, and the expansion block is equally divided into four expansion plates in the length direction of the axis of the expansion block; the expansion plate can initially abut against the inner wall of the narrow portion of the gall bladder of a patient through outward expansion for limiting, and the device can be accurately positioned through observation of a choledochoscope; by supporting the narrow part of the gall bladder, the gall bladder stenosis of a patient can be treated, the expansion time can be automatically controlled, and the gall bladder stenosis dilator is suitable for the time required by the expansion of the gall bladder stenosis of different patients.

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.

A passive lung simulator device is provided. It includes a casing or box that includes a first lung simulator balloon; an air collector coupled to one end of the first balloon; a first set of servo valves, arranged in series, connected to the air collector via air flow conduits; and a connection element for a mechanical ventilator. The servo valves are configured to independently recirculate the air flow passing through them to the air collector, expanding the balloon. It also includes a first set of cams to be actuated by a servomotor to modify the compliance or capacity of the balloon simulator through the rotation of the first set of cams; and a communications module connected to the first set of servo valves and the first set of cams, with wireless connection to a remote computing device to receive instructions to simulate different pulmonary pathologies.

The utility model provides a device for swallowing dysfunction multi-mode rehabilitation treatment, which comprises a multi-chamber elastic tube (10), a stimulation bag (20), an infusion interface (30), a stimulation electrode, an electrode lead (405) and an electrical stimulation interface (406), and is characterized in that at least two channels are arranged in the multi-chamber elastic tube (10); the open end of the stimulation bag (20) is combined on the outer wall of the head end of the multi-cavity elastic tube (10) in a sealed mode, and an inner cavity of the stimulation bag (20) is communicated with a refrigerant injection port (104) in the head of a first channel (101) in the multi-cavity elastic tube (10). According to the device, intervention methods of various modes such as cold stimulation, electrical stimulation or balloon dilatation are achieved in one device, the treatment effect better than that of a single treatment means is improved, the integration level of rehabilitation treatment materials for dysphagia is improved, and the convenience of preparation of the rehabilitation treatment materials is improved. Meanwhile, the feed can be left in the esophagus of a patient for enteral nutrition support.

The invention discloses a microneedle raw material composition, a microneedle, a microneedle patch, a drug eluting balloon and a preparation method and application thereof. The composition comprises a compound as shown in a formula I which is described in the specification. The microneedle comprises: a needle body; the needle body is prepared from a first raw material, and the first raw material comprises the composition. The drug eluting balloon comprises an expansion balloon, and the microneedle is fixed on the surface of the expansion balloon; the microneedle patch comprises the microneedle. The composition disclosed by the invention can be used for preparing the microneedle with photoresponsiveness, the needle body of the microneedle can be quickly separated from the bottom under the irradiation of near-infrared light, the medicine pre-loaded in the needle body is transferred to tissues, and the medicine delivery efficiency is high. According to the drug eluting balloon disclosed by the invention, mechanical force generated by balloon dilatation is utilized to accurately pierce a microneedle into a pathological tissue, so that local efficient delivery of a drug is realized; through the photoresponsiveness of the microneedle, the drug-loaded particles are transferred to the target tissue, the drug transfer rate is high, systematic toxicity is avoided, and the drug utilization degree is high. # imgabs0 #

The invention provides a drug-loaded balloon dilatation system. The drug-loaded balloon dilatation system comprises an inner tube, a middle tube, an outer sheath tube and a control handle, a first balloon and a second balloon are arranged on the middle tube, and both the first balloon and the second balloon have an expansion state and a contraction state; the inner pipe is inserted into and penetrates through the middle pipe and sleeved with a support, the first end of the support is connected with the end of the middle pipe, and the second end of the support is connected with the inner pipe. The outer sheath tube is sleeved on the middle tube; the control handle is connected with the middle tube to drive the middle tube to move relative to the inner tube, and the control handle is connected with the outer sheath tube to drive the outer sheath tube to move relative to the middle tube. According to the expansion system, the patient does not need to be subjected to general anesthesia in the operation process and does not need to enter an operating room, and treatment can be completed in an outpatient service; reciprocating actions possibly rubbing the urethra of a patient are hidden in the outer sheath tube, so that stimulation to the urethra of the patient is small, discomfort of the patient is relieved, the urethra of the patient is not prone to being damaged, complications are fewer, and safety is higher.

The invention relates to a cluster balloon dilatation device which is formed by sequentially connecting a tip, a cluster balloon, a tube cavity, a push rod and a handle seat, the cluster balloon is composed of at least two symmetrical single balloons, and a shared wall is arranged between every two adjacent single balloons; the tube cavity is of a double-layer tubular cavity structure composed of an outer tube and an inner tube, and the far end of the inner tube is axially arranged in the center of the bundling balloon. The near end of the single bag is communicated with the far end of the push rod through the outer tube. Compared with the prior art, the high-pressure dilatation balloon adopts an acute-angle-free structure, is suitable for being used in a human body lumen, realizes high-pressure dilatation by selecting any single balloon under the condition of one-time interventional therapy, reduces damage to a blood vessel wall when the balloon and a guide wire are replaced in an operation, has independence in compliance of each single balloon, and can be switched and selected according to needs; in addition, gaps are reserved between the single sacs of the cluster balloon, unexpected tearing of blood vessels or tissues in the expansion process can be effectively avoided, the effectiveness and safety of the structure are improved, and pain and decoction in and after an operation of a patient are reduced.

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 invention provides a blood vessel modification balloon dilatation model device which comprises a plaster model, the plaster model is tubular, and the middle of the plaster model is hollow so that a nick balloon can be stuffed into the plaster model; the first connecting part is arranged on the outer side of the plaster model, and a first notch used for containing the plaster model is formed in one side of the first connecting part; the second notch is formed in the first connecting part; and the positioning mechanism is arranged in the second notch so as to fix the gypsum model in the first connecting part. The first connecting part provides a space capable of accommodating a plaster model; a second notch is formed, so that the positioning mechanism can find a proper fixing position, and the stability of the plaster model in the machining process is guaranteed; and through cooperative use of the multiple positioning mechanisms, accurate positioning of multiple fixing points of the plaster model can be achieved, and the fixing stability is further improved.

The utility model relates to the technical field of medical instruments, in particular to a thrombus removing device. The utility model provides a thrombus removing device which comprises an outer tube and an expandable balloon arranged at the far end of the outer tube, and the balloon can block blood vessels after being expanded. The device further comprises an inner pipe and a screw rod. The inner pipe is arranged in the outer pipe and can relatively move in the axial direction, the far end of the inner pipe is a net pipe capable of expanding automatically, and the net pipe is in a funnel shape after expanding automatically; and the screw rod can enter the inner pipe and can relatively move in the axial direction. The technical problem that in the prior art, thrombus cannot be removed thoroughly is solved.

The utility model provides a timing balloon dilatation pressure pump, including push rod, tube body, pressure gauge, high pressure tube, locking device and timing device, the tube body is fixedly connected with the casing, the locking device is arranged in the casing, the timing device is fixed on the circumferential side wall of the casing, one end of the push rod passes through the locking device and extends into the tube body, and the other end of the push rod passes through the pressure gauge. A handle is fixed at one end of the push rod, external threads are arranged on the push rod, the front end of the push rod arranged in the tube body is connected with a piston, the side wall of the front end of the tube body is connected with a pressure gauge, and one end of the high-pressure tube is communicated with the front end of the tube body. Time is set according to the balloon and operation requirements, when the time reaches a preset value, the buzzer gives an alarm, and the indicator lamp flickers.

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 belongs to the field of medicine instrument preparation, and particularly relates to a medicine coating material, a medicine balloon dilatation catheter and a preparation method and application of the medicine balloon dilatation catheter. According to the drug coating material provided by the invention, the hydrogel is added into the biodegradable polymer microspheres, so that holes formed after the biodegradable polymer drug-loaded microspheres are eroded by water can be effectively inhibited, and the drug-loaded microspheres can be degraded under the synergistic effect of the hydrogel and the biodegradable polymer core-shell structure. The release rate of the drug-loaded microspheres in the first 14 days can be effectively inhibited, and the drug diffusion rate is reduced.

A system for providing feedback during balloon angioplasty, is provided. The system comprises one or more processors configured to: receive projection image data representing a balloon in a vessel; and output, based on a shape (140) of the balloon in a simulated expanded state in the vessel, and based on a shape (150) of the balloon represented in the projection image data, information (160, 170) for comparing a state of expansion of the balloon represented in the projection image data with the simulated expanded state.

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.

This invention discloses a bone cement injection device for vertebral body shaping, applicable to percutaneous balloon dilatation kyphoplasty. The device includes an outer cannula, a balloon, a fixation sleeve, a check plug, an injection cylinder, and an injection plunger. The neck of the balloon is opened and compressed to one end of the inner hole of the outer cannula by the fixation sleeve. An elastic check plug is located within the fixation sleeve, with a channel in its center connecting the balloon and the injection cylinder. During bone cement injection, the bone cement is first pushed to the check plug through the injection cylinder under high pressure, and then injected forward into the balloon through the injection suture. The compression from the injection suture ruptures any remaining pores in the bone cement, ensuring the structural strength of the hardened bone cement and preventing cracking. After the bone cement injection is complete, the check plug is axially compressed and radially expanded, thereby closing the injection suture and preventing bone cement from passing through the check plug, thus avoiding the surgical risks caused by bone cement spillage.