Micro-capsule micro-catheter device

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to a micro-capsule and micro-catheter device which is characterized in that a medicine bag arranged at an annular contraction opening of a balloon is matched with a telescopic assembly, so that the risk that most medicine is washed away by blood flow when the balloon enters the body of a patient can be avoided, and the balloon is inflated and contracted through a first blowing and sucking hole; a doctor can accurately control the expansion degree of the balloon so as to adapt to medical requirements of different parts and different degrees, a sliding sleeve and a telescopic assembly are combined for use, one end of the balloon can move according to needs, the operation accuracy is further improved, a medicine bag is ingeniously arranged at an annular contraction opening of the balloon, and the operation is more convenient. When the balloon is expanded, the balloon bags can be uniformly expanded and release the medicine, so that the medicine can uniformly act on a target area, and the method not only improves the utilization rate of the medicine, but also reduces the risk of side effects and complications.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment, and particularly relates to a micro-capsule micro-catheter device. BACKGROUND

[0002] In recent years, drug-eluting balloons are widely used. By increasing a drug coating on the surface of the balloon, active ingredients in the coating are penetrated into the blood vessel wall by the balloon adhering to the wall, so as to inhibit the excessive proliferation of smooth muscle cells after the blood vessel is stressed, thereby slowing down or even eliminating the occurrence of blood vessel restenosis.

[0003] However, the current drug-eluting balloon only coats the drug on the surface of the balloon, and the amount of the drug reaching the target lesion blood vessel wall is low (<30%). Most of the drug is washed away by the blood flow on the way to the target blood vessel, and the washed particles can cause adverse reactions. In addition, because the smooth muscle cell proliferation and extracellular matrix production occur several weeks to several months after the blood vessel is damaged, and the drug is rapidly metabolized by the body after entering the human body, the drug cannot have a long-term effect on the chronic proliferation of the blood vessel, and thus there are problems of low drug utilization and short drug effect. SUMMARY

[0004] The utility model aims at providing a micro-capsule micro-catheter device to solve the problems mentioned in the background.

[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0006] A micro-capsule micro-catheter device, comprising a catheter, a guide wire is installed on the inner side of the catheter, a balloon is installed on the left side of the catheter, a sliding sleeve which is slidably connected with the catheter is installed on the inner side of the balloon, the left end of the balloon is fixedly connected with the catheter, and the other end is fixedly connected with the sliding sleeve, a plurality of annular contraction openings which are distributed at intervals left and right are formed on the upper side of the balloon, a drug capsule bag is connected with the left and right ends of each annular contraction opening, a first blowing and sucking hole which is in communication with the inside of the balloon is formed on the left end of the catheter, a telescopic assembly is installed on the middle part of the balloon, one end of the telescopic assembly is fixedly connected with the catheter, and the other end is drivingly connected with the sliding sleeve.

[0007] The telescopic assembly comprises a folding tubular telescopic air bag, and a suction pipe which is in communication with the inside of the folding tubular telescopic air bag is installed on the outside of the folding tubular telescopic air bag.

[0008] The suction pipe is installed on the inner side of the catheter, one end of the suction pipe is connected with the pipeline of the folding tubular telescopic air bag, and the other end extends out of the outer side of the right end of the catheter.

[0009] The drug capsule bag, the balloon, and the folding tubular telescopic air bag are all made of polyether amide soft material which has certain elasticity and strength.

[0010] The material thickness of the drug capsule belt is less than the balloon material thickness.

[0011] The balloon left and right ends are provided with arc chamfers.

[0012] The drug capsule bags arranged at the annular contraction openings of the balloon and the cooperation of the telescopic assembly can avoid the risk that most of the drugs are washed away by blood flow when the balloon enters the patient's body, the balloon can be inflated and contracted through the first blowing and suction hole, and the doctor can accurately control the expansion degree of the balloon, so as to adapt to different parts and different degrees of medical needs, the combination of the sliding sleeve and the telescopic assembly can move one end of the balloon as needed, further improving the accuracy of operation, the drug capsule bags are ingeniously arranged at the annular contraction openings of the balloon, when the balloon expands, the capsule bags will uniformly expand and release drugs, ensuring that the drugs can uniformly act on the target area, this method not only improves the utilization rate of the drugs, but also reduces the risk of side effects and complications, the other end of the suction tube is connected with the external control end, the telescopic assembly adopts the design of the folding tubular telescopic air bag, so that the left and right lateral telescoping of the balloon as a whole can be accurately controlled through the air guide tube, and the structure of the folding tubular telescopic air bag is simple and reliable, the running stability of the equipment is improved, the design of the two catheters nested can reduce the friction and damage of the suction tube to the surrounding tissues, the main parts (such as the drug capsule bag, the balloon and the folding tubular telescopic air bag) of the device are made of polyether amide soft material, the material has good biocompatibility and can reduce the rejection reaction of the human body, the material thickness of the drug capsule bag is less than the material thickness of the balloon, so that the drug capsule bag can be broken more easily and release the drugs when the balloon expands, the arc chamfer design of the balloon left and right ends reduces the risk of damage of the device to the surrounding tissues and improves the safety of operation. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model can be further illustrated by the non-limiting embodiments shown in the drawings.

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a sectional structure schematic diagram of the utility model.

[0016] Figure 3 It is Figure 2 It is an enlarged structure schematic diagram of A in the middle.

[0017] Catheter 1, guide wire 101, balloon 102, sliding sleeve 103, contraction opening 104, drug capsule bag 106, first blowing and suction hole 107, folding tubular telescopic air bag 201, suction tube 202, arc chamfer 6. DETAILED DESCRIPTION

[0018] In order to make the skilled in the art can better understand the utility model, the utility model technical scheme is further explained below in connection with the drawings and examples.

[0019] As Figures 1-3 The utility model discloses a kind of micro-capsule micro-catheter devices, including catheter 1, guide wire 101 is installed in the inside of catheter 1, balloon 102 is installed in the left side of catheter 1, balloon 102 inside is installed with the sliding sleeve 103 being connected to the left and right of catheter 1, balloon 102 left end is fixedly connected with catheter 1, and its other end is fixedly connected with sliding sleeve 103, a plurality of annular contraction ports 104 distributed at intervals left and right are set on the upper side of balloon 102, and each annular contraction port 104 is connected with medicine bag 106 left and right two ends, first blowing and suction hole 107 is set in the left end of catheter 1 with balloon 102 interior communication, telescopic component is installed in the middle of balloon 102, and one end of telescopic component is fixedly connected with catheter 1, and its other end is drivingly connected with sliding sleeve 103.

[0020] The utility model discloses when not being used, telescopic component is in the contraction state, contraction port 104 is in the closed state, medicine bag 106 is set in the inside of annular contraction port 104 of balloon 102, for storing medicine, and medicine bag 106 has certain elasticity and strength. The primary role of guide wire 101 is to guide balloon 102 catheter 1 to reach target lesion site, and sliding sleeve 103 is slidably connected to the left and right of catheter 1, which can drive one end of balloon 102 to move through the transmission of telescopic component, so as to realize the expansion and contraction of balloon 102, and the other end of catheter 1 is connected with the control mechanism outside micro-capsule micro-catheter device, when micro-capsule micro-catheter device is used, catheter 1 is deeply inserted into the site needing to be painted in patient's body, and then telescopic component is elongated, so that contraction port 104 is in the open state, and then the control mechanism outside is inflated to the inside of catheter 1, medicine bag 106 and balloon 102 are inflated through first blowing and suction hole 107, and medicine bag 106 is turned over from contraction port 104 along with surface medicine, so as to paint the site needing to be painted, after use, first air is extracted through catheter 1, after medicine bag 106 is contracted to the inside of balloon 102, telescopic component is controlled again, so that contraction port 104 is closed, under the action of catheter 1, balloon 102 and medicine bag 106 return to the initial state.

[0021] The drug sac 106 arranged at the annular contraction opening 104 of the balloon 102 and the cooperation of the telescopic assembly enable the balloon 102 to avoid the risk of most of the drug being washed away by the blood flow when entering the patient's body. By inflating and deflating the balloon 102 through the first blowing and sucking hole 107, the doctor can accurately control the expansion degree of the balloon 102, so as to adapt to different parts and different degrees of medical needs. The combination of the sliding sleeve 103 and the telescopic assembly enables one end of the balloon 102 to move as needed, further improving the accuracy of operation. The drug sac 106 is ingeniously arranged at the annular contraction opening 104 of the balloon 102. When the balloon 102 expands, these sacs will uniformly expand and release drugs, ensuring that the drugs can uniformly act on the target area. This method not only improves the utilization rate of drugs, but also reduces the risk of side effects and complications.

[0022] The telescopic assembly comprises a folded tubular telescopic balloon 201, and a suction pipe 202 is arranged outside the folded tubular telescopic balloon 201 and communicates with the inside of the folded tubular telescopic balloon 201.

[0023] The other end of the suction pipe 202 is connected with an external control end. The telescopic assembly adopts the design of the folded tubular telescopic balloon 201, so that the left-right transverse telescoping of the balloon 102 as a whole can be accurately controlled through the air guide pipe, and at the same time, the structure of the folded tubular telescopic balloon 201 is simple and reliable, improving the stability of the equipment operation.

[0024] The suction pipe 202 is arranged inside the catheter 1, one end of the suction pipe 202 is connected with the pipeline of the folded tubular telescopic balloon 201, and the other end of the suction pipe 202 extends out of the right end of the catheter 1.

[0025] The drug sac belt, the balloon 102 and the folded tubular telescopic balloon 201 are all made of polyether amide soft material with certain elasticity and strength.

[0026] The material thickness of the drug sac belt is smaller than the material thickness of the balloon 102.

[0027] The balloon 102 is provided with an arc-shaped chamfer 6 at both left and right ends.

[0028] The nested design of the two catheters 1 can reduce the friction and damage of the suction pipe 202 to the surrounding tissues.

[0029] The main components (such as the drug sac 106, the balloon 102 and the folded tubular telescopic balloon 201) of the device are all made of polyether amide soft material, which has good biocompatibility and can reduce the rejection reaction to the human body.

[0030] The material thickness of the drug sac 106 is smaller than the material thickness of the balloon 102, so as to ensure that the drug sac 106 can be broken more easily and release the drug when the balloon 102 expands.

[0031] The arc chamfer 6 at the left and right ends of the balloon 102 is designed to reduce the risk of damage to the surrounding tissue by the device and improve the safety of operation.

[0032] The above examples only illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above examples without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed by the present application should be covered by the claims of the present application.

Claims

1. A microcapsule microcatheter device comprising a catheter having a guidewire mounted inside, characterized in that: The catheter is provided with a balloon on the left side, a sliding sleeve connected with the catheter on the left and right sides inside the balloon, the left end of the balloon is fixedly connected with the catheter, the other end is fixedly connected with the sliding sleeve, a plurality of annular contraction openings are arranged on the upper side of the balloon, a medicine bag is connected with the left and right ends of each annular contraction opening, a first blowing and sucking hole is arranged on the left end of the catheter and communicated with the inside of the balloon, a telescopic assembly is arranged on the middle part of the balloon, one end of the telescopic assembly is fixedly connected with the catheter, and the other end is drivingly connected with the sliding sleeve.

2. A microencapsulated microcatheter device according to claim 1, wherein: The telescopic assembly comprises a folding tubular telescopic air bag, and a suction pipe is arranged on the outside of the folding tubular telescopic air bag and communicated with the inside of the folding tubular telescopic air bag.

3. A microencapsulated microcatheter device according to claim 2, wherein: The suction pipe is arranged inside the catheter, one end of the suction pipe is connected with the pipeline of the folding tubular telescopic air bag, and the other end of the suction pipe extends outside the right end of the catheter.

4. A microencapsulated microcatheter device according to claim 3, wherein: The medicine bag, the balloon and the folding tubular telescopic air bag are all made of polyether amide soft material with certain elasticity and strength.

5. A microencapsulated microcatheter device as in claim 4, wherein: The material thickness of the medicine bag is smaller than that of the balloon.

6. A microencapsulated microcatheter device as in claim 5, wherein: Arc-shaped chamfers are arranged on the left and right ends of the balloon.

Images