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CN-121371445-B - Multi-stage adjustable pulmonary vessel access balloon catheter

CN121371445BCN 121371445 BCN121371445 BCN 121371445BCN-121371445-B

Abstract

The invention provides a multistage adjustable pulmonary vessel access balloon catheter, and belongs to the field of medical instruments. Including pipe and pressure device, the one end fixedly connected with pipe main part of pipe, the one end that the pipe main part kept away from the pipe is fixedly connected with pressure cavity, seal wire chamber, pressure release chamber respectively, and pressure cavity, seal wire chamber and pressure release chamber are linked together with the pipe main part, and the one end fixedly connected with soft head of pipe, pressure device set up the one end that is close to soft head at the pipe. The invention can trigger the opening of the corresponding flaps of the inner, middle and outer three-layer balloons in sequence by means of precisely controlling the pressurizing pressure, realizes the grading expansion effect of pre-expanding the inner-layer balloon under 2atm, superposing and expanding the middle-layer balloon under 4atm and precisely forming the outer-layer balloon under 6atm, can avoid overpressure risk by matching with a spring type safety valve opened under 8atm in a pressure release channel, ensures that the balloon is quickly retracted by negative pressure suction and the flaps are automatically closed, reduces the guide wire displacement risk, shortens the operation time and reduces the radiation exposure of patients.

Inventors

  • Zeng Qixian
  • LI HONGYE

Assignees

  • 中国医学科学院阜外医院

Dates

Publication Date
20260508
Application Date
20251121

Claims (9)

  1. 1. The utility model provides a multistage adjustable pulmonary blood vessel medium-access sacculus pipe, includes pipe, pressure device and pressure linkage development enhancement mechanism, its characterized in that, the one end fixedly connected with pipe main part of pipe, the one end that the pipe main part kept away from the pipe is fixedly connected with pressure chamber, seal wire chamber and pressure release chamber respectively, pressure chamber, seal wire chamber and pressure release chamber are linked together with the pipe main part, the one end fixedly connected with soft head of pipe, pressure device sets up the one end that is close to soft head at the pipe, pressure linkage development enhancement mechanism sets up the one end that is kept away from soft head at the pipe; The pressurizing device comprises an inner balloon, the inner balloon is fixedly connected with a catheter, the inner balloon is communicated with the catheter, a middle balloon is sleeved on the surface of the inner balloon, an outer balloon is sleeved on the surface of the middle balloon, air holes are formed in the surfaces of the inner balloon, the middle balloon and the outer balloon, a main sealing valve is rotationally connected to the surfaces of the air holes, an auxiliary sealing valve is rotationally connected to one end, close to the main sealing valve, of the air holes, a sealing strip is fixedly connected to the upper surface of the auxiliary sealing valve, a silicon nitride spring piece is fixedly connected to one end, far away from the air holes, of the silicon nitride spring piece, the sealing valve opening pressure threshold values of the surfaces of the inner balloon, the middle balloon and the outer balloon are different; through setting up pressurizing device, can trigger in proper order that interior sacculus, well sacculus, outer sacculus correspond the valve with the help of control pressurizing pressure and open, realize that 2atm lower inlayer sacculus is expanded in advance, 4atm lower middle sacculus stack expansion, 6atm lower outer sacculus's staged expansion, be provided with spring relief valve in the pressure release passageway, negative pressure pumping can make the sacculus retract fast and the valve is automatic to be closed.
  2. 2. The multi-stage adjustable pulmonary vascular access balloon catheter of claim 1, wherein the surfaces of the inner balloon and the middle balloon are fixedly connected with bumps, and the bumps are arranged in a circumferential array along the inner balloon and the middle balloon.
  3. 3. The multi-stage adjustable pulmonary vessel access balloon catheter of claim 2, wherein the catheter is provided with an exchange hole, the catheter being made of polyurethane composite material.
  4. 4. The multi-stage adjustable pulmonary blood vessel access balloon catheter according to claim 1, wherein the inner wall of the soft head is provided with a marking device, the marking device comprises a sliding sheet, the sliding sheet is in sliding connection with the soft head, one end of the sliding sheet is fixedly connected with a blocking sheet, the blocking sheet is positioned in the inner wall of the soft head, the surface of the soft head is sleeved with a circular ring, the circular ring is fixedly connected with the sliding sheet, the outer surface of the soft head is fixedly connected with a blocking sheet, the lower surface of the blocking sheet is fixedly connected with a rubber band, one end of the rubber band, which is far away from the blocking sheet, is fixedly connected with the circular ring, the rubber band is arranged in a circumferential array along the outer surface of the soft head, and one end of the soft head is fixedly connected with a binding rod.
  5. 5. The multi-stage adjustable pulmonary vascular access balloon catheter according to claim 4, wherein one end of the circular ring close to the beam rod is fixedly connected with a rotating rod, the surface of the rotating rod is rotationally connected with a clamping piece, one end of the circular ring close to the clamping piece is fixedly connected with an iron rod, the iron rod is positioned on the lower surface of the clamping piece, a torsion spring is sleeved on the surface of the rotating rod, and two ends of the torsion spring are respectively fixedly connected with the clamping piece and the circular ring.
  6. 6. The multi-stage adjustable pulmonary vessel access balloon catheter according to claim 1, wherein the inner wall of the pressure release cavity is provided with a protection device, the protection device comprises a hollow tube, the hollow tube is fixed in the inner wall of the pressure release cavity, the inner wall of the hollow tube is fixedly connected with a first partition plate, one end of the hollow tube, which is close to the first partition plate, is fixedly connected with a second partition plate, the surfaces of the first partition plate and the second partition plate are provided with through holes, the through holes on the surfaces of the first partition plate and the second partition plate are slidably connected with a frame body, the surfaces of the frame body are fixedly connected with a first cylinder and a second cylinder, the surfaces of the first partition plate and the second partition plate are provided with air outlets, and the length of the first cylinder is shorter than that of the second cylinder.
  7. 7. The multi-stage adjustable pulmonary vessel access balloon catheter according to claim 6, wherein a support is fixedly connected to one side of the hollow tube, a pressure spring is fixedly connected to one end of the support, and one end of the pressure spring away from the support is fixedly connected to the frame.
  8. 8. The multi-stage adjustable pulmonary vessel access balloon catheter according to claim 1, wherein the pressure linkage development enhancement mechanism comprises a linkage push rod, a wedge-shaped transmission block, a development mark sliding seat, an elastic reset piece, an enhancement type development ring and a sealing sleeve, one end of the linkage push rod is fixed on the inner wall of the circular ring, the sealing sleeve is sleeved at the penetrating position of the linkage push rod and the wall of the pressurizing cavity, two ends of the sealing sleeve are fixed on the outer wall and the inner wall of the pressurizing cavity through medical adhesive, the other end of the linkage push rod is connected with the plane end of the wedge-shaped transmission block through threads, the inclined surface of the wedge-shaped transmission block is attached to the end surface of the development mark sliding seat, the development mark sliding seat is of a semi-annular structure, and the development mark sliding seat is detachably connected with the outer wall of the catheter through an elastic buckle of the inner wall.
  9. 9. The multi-stage adjustable pulmonary vessel access balloon catheter according to claim 8, wherein the enhanced developing rings are respectively embedded in the grooves of the outer wall of the developing mark sliding seat, the enhanced developing rings are in interference fit with the developing mark sliding seat, the elastic resetting piece is sleeved on the outer wall of the catheter, two ends of the elastic resetting piece are respectively abutted against the side surface of the developing mark sliding seat and the fixed retainer ring on the catheter, and the wall of the pressurizing cavity is provided with a through hole corresponding to the position of the linkage push rod.

Description

Multi-stage adjustable pulmonary vessel access balloon catheter Technical Field The invention relates to the field of medical equipment, in particular to a multi-stage adjustable pulmonary vessel access balloon catheter. Background Pulmonary vascular interventional therapy is often used for coping with diseases such as pulmonary artery stenosis and chronic thromboembolic pulmonary arterial hypertension, balloon dilatation and forming are key means, the pulmonary arterial stenosis causes the passage between the right ventricle and the pulmonary artery to be narrowed due to congenital malformation, the patient can suffer from chest distress, shortness of breath and other symptoms, the chronic thromboembolic pulmonary arterial hypertension is caused by pulmonary arterial thrombosis and vascular remodeling, the pulmonary arterial pressure is continuously increased, and finally right heart failure is initiated. In the traditional single balloon step-by-step expansion method, when balloons with different diameters are replaced every time, such as from 2mm to 4mm and 6mm, repositioning operation is needed for a guide wire, the average time consumption of the process is 15-20 minutes every time, the whole operation duration can be obviously prolonged, the operation burden of an operator is increased, the shift risk is easy to occur due to repeated adjustment of the guide wire, the operation positioning deviation and the target vascular injury can be possibly caused, the exposure time of a patient under the radioscopy is prolonged through multiple operations, the radiation dose of the patient is correspondingly increased, in addition, the complexity of the operation flow is also improved through repeated instrument replacement and guide wire adjustment, and the treatment efficiency is reduced. Based on the above technical problems, some solutions are also provided in the prior art, such as CN219579689U and CN218793518U, which can provide variable diameter balloons, and reduce the number of replacement times, but the balloon expansion still needs to be manually switched, and may still need to be adjusted by multiple guide wires, and there are instrument replacement and complicated operations. The doctor needs to repeatedly operate the pressurizing channel switch or adjust the control part in the operation, so that the hand operation steps are increased, the situation that the expansion time is delayed or the pressure is controlled inaccurately due to the deviation of the operation rhythm easily occurs, and the vascular intima is damaged by excessive expansion or the treatment effect is not achieved due to insufficient expansion. Disclosure of Invention Aiming at the problem that the balloon expansion state still needs to be manually switched in the prior art, a doctor needs to repeatedly operate a pressurizing channel switch or adjust a control component in operation, the invention aims to provide a multi-stage adjustable pulmonary vessel access balloon catheter. In order to solve the problems, the invention adopts the following technical scheme: the utility model provides a pulmonary vessel medium access sacculus pipe with adjustable it is multistage, includes pipe, pressure device and pressure linkage development enhancement mechanism, the one end fixedly connected with pipe main part of pipe, the one end that the pipe main part kept away from the pipe is fixedly connected with inflation chamber, seal wire chamber and pressure release chamber respectively, inflation chamber, seal wire chamber and pressure release chamber are linked together with the pipe main part, the one end fixedly connected with soft head of pipe, pressure device sets up the one end that is close to the soft head at the pipe, pressure linkage development enhancement mechanism sets up the one end that keeps away from the soft head at the pipe, pressure device includes interior sacculus, interior sacculus and pipe fixed connection, interior sacculus is linked together with the pipe, the surface cover of interior sacculus is equipped with well sacculus, the surface cover of well sacculus is equipped with outer sacculus, the gas pocket has all been seted up on the surface of interior sacculus, well sacculus and outer sacculus, the surface rotation of gas pocket is connected with main seal flap, the one end rotation that the gas pocket is close to main seal flap is connected with vice seal flap, vice seal flap is located on the one end that vice seal flap is close to the pipe, vice seal flap is connected with four seal flap, the one end that is kept away from the seal flap is connected with four seal flap, four seal flap and one end are kept away from seal silicon nitride respectively. The air pressure in the pressurizing cavity and the difference between the external normal pressure drive the blocking piece to move, the blocking piece is fixed at one end of the sliding piece on the inner wall of the pressurizing cavity, the pulling force of the rub