CN114917458A

CN114917458A - Large-inner-cavity balloon guide catheter

Info

Publication number: CN114917458A
Application number: CN202210553918.3A
Authority: CN
Inventors: 田之林
Original assignee: Nanjing Maichuang Medical Technology Co ltd
Current assignee: Nanjing Maichuang Medical Technology Co ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-08-19

Abstract

The invention discloses a large-lumen balloon guide catheter, which comprises a guide tube, wherein a balloon is fixedly arranged in the guide tube through a fixing piece, the balloon is of a flat spherical structure, an installation groove is formed in the arc surface of the balloon, an electric telescopic rod is fixedly arranged in the installation groove, a framework plate is fixedly arranged at the power output end of the electric telescopic rod, the outer side of the framework plate is fixedly connected with the balloon through an inflation pile, the balloon is annularly wrapped on the outer side of the framework plate, an air guide tube and a lead wire are fixedly connected to the balloon, the air guide tube is positioned in the guide tube, a forked inflation port is formed in the air guide tube, the forked inflation port penetrates through the guide tube and is provided with a barometer, and the tail end of the lead wire penetrates through the guide tube of the air guide tube and extends to the outside, and the large-lumen balloon guide catheter has the advantages that: the air bag can bear enough pressure without collapsing while ensuring that the air bag can be quickly contracted.

Description

Large-inner-cavity balloon guide catheter

Technical Field

The invention relates to the technical field of medical equipment, in particular to a large-cavity balloon guide catheter.

Background

The diagnosis and treatment of intravascular intervention are a minimally invasive treatment mode, and with the progress of imaging equipment and the rapid development of the introduction and improvement of novel intervention equipment in recent years, vascular interventional doctors can treat more and more complex lesions, more and more cases are applied clinically, and the related disease types are more and more extensive. Interventional diagnosis and treatment modalities are rapidly developing, and the number of interventional treatment cases of the unicorn heart disease currently reaches 50 ten thousand in the United states. However, one of the problematic problems faced at present is the occlusion of the distal vessel caused by the flow of debris emboli towards the distal end of the vessel during the endovascular manipulation of catheters or the delivery of balloons, stents or occluders for interventional procedures. For example, the incidence of myocardial necrosis caused by PCI interventional Percutaneous Coronary Intervention (PCI) is as high as 16% -39%, and most of the causes are caused by the blockage of distal blood vessels by intravascular debris and plaque generated in interventional procedures. Therefore, protecting the distal end of a blood vessel is an important issue in current interventional medicine during interventional diagnosis and treatment.

In interventional therapy such as thrombectomy, the saccule is attached to a blood vessel wall through expansion of the saccule, so that blood flow is temporarily blocked to protect a far end of the blood vessel. At the same time, the catheter is withdrawn by the contraction of the balloon to restore recanalization of the blood flow. The key problem of the treatment method is how to ensure that the contraction time of the saccule is not too long so as to withdraw the catheter in time, and the catheter has certain flexibility so as to smoothly enter a bent blood vessel. The current foreign products include Merci-brand Balloon Guide Catheter produced by inc, and Cello-brand Balloon Guide Catheter produced by EV3, but because the Merci outer tube is a single-layer polymer, the outer tube has an unsatisfactory ability to withstand negative pressure, which results in a longer contraction time of the Balloon, and even the outer tube collapses while the Balloon contracts, so that the Catheter cannot be withdrawn, and the outer tube of the Cello is reinforced by a steel wire mesh, which can improve the ability of the Catheter to withstand negative pressure.

Disclosure of Invention

The invention aims to provide a large-inner-cavity balloon guide catheter to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a big inner chamber type sacculus guide pipe, includes the guiding tube, there is the sacculus inside of guiding tube through mounting fixed mounting, the sacculus is flat globular structure, the mounting groove has been seted up in the cambered surface of sacculus, fixed mounting has electric telescopic handle in the mounting groove, electric telescopic handle's power take off end fixed mounting has the skeleton board, the outside of skeleton board is through aerifing a fixed connection gasbag, the gasbag is the ring form parcel in the outside of skeleton board, fixedly connected with air duct and wire on the sacculus, the wire is located the inside of air duct, the air duct is located the inside of guiding tube, set up the branching inflation inlet on the air duct, the branching inflation inlet runs through the guiding tube and disposes the barometer, the end of wire runs through the guiding tube of air duct and extends to outside.

As a further scheme of the invention: the inside of sacculus is hollow structure, the surface of sacculus is provided with the hose and is connected with the stake of aerifing, the quantity of sacculus surface mounting groove is a plurality of, and is the annular arrangement.

As a further scheme of the invention: the fixing piece consists of two parts, namely a connecting rod and a spring, the connecting rod is fixedly installed on the inner wall of the guide tube and the surface of the balloon respectively, and the spring fixedly connects the two connecting rods.

As a further scheme of the invention: the diameter of the balloon is smaller than that of the guide tube in a normal state.

As a further scheme of the invention: the framework plate is of a circular curved surface structure, the diameter of the framework plate is the same as that of the mounting groove, and the curvature of the surface of the framework plate is the same as that of the corresponding mounting groove notch.

As a further scheme of the utility information: the wire and electric telescopic handle electric connection, through external switch control electric telescopic handle's flexible.

Compared with the prior art, the invention has the beneficial effects that: the air bag can bear enough pressure without collapsing while ensuring that the air bag can be quickly contracted.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a cross-sectional view of the structure of the present invention;

FIG. 2 is a longitudinal cross-sectional view of the present invention;

fig. 3 is a schematic view of the surface structure of the balloon of the present invention.

In the figure: 1. a guide tube; 2. a fixing member; 3. a balloon; 4. mounting grooves; 5. an electric telescopic rod; 6. a framework plate; 7. inflating piles; 8. an air bag; 9. a gas-guide tube; 10. a wire; 11. a bifurcated inflation port; 12. and a barometer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, in the embodiment of the present invention, a large-lumen balloon guiding catheter includes a guiding catheter 1, a balloon 3 is fixedly mounted inside the guiding catheter 1 through a fixing member 2, the balloon 3 is of a flat spherical structure, an installation groove 4 is formed on an arc surface of the balloon 3, an electric telescopic rod 5 is fixedly mounted in the installation groove 4, a skeleton plate 6 is fixedly mounted at a power output end of the electric telescopic rod 5, an air bag 8 is fixedly connected to an outer side of the skeleton plate 6 through an inflation pile 7, the air bag 8 is annularly wrapped on an outer side of the skeleton plate 6, an air duct 9 and a lead 10 are fixedly connected to the balloon 3, the lead 10 is located inside the air duct 9, the air duct 9 is located inside the guiding catheter 1, a bifurcated inflation port 11 is formed on the air duct 9, the bifurcated inflation port 11 penetrates through the guiding catheter 1 and is provided with a barometer 12, the end of the lead wire 10 penetrates through the guide tube 1 of the air duct 9 and extends to the outside.

It is worth noting that the fixing piece 2 is composed of two parts, namely a connecting rod and a spring, the connecting rod is fixedly installed on the inner wall of the guide tube 1 and the surface of the balloon 3 respectively, the spring fixedly connects the two connecting rods, and the fixing piece 2 can stretch out and draw back to a certain degree when the guide tube 1 expands through the spring, so that the expansion condition of the guide tube 1 is met.

It should be noted that the inside of the balloon 3 is of a hollow structure, a hose is arranged on the surface of the balloon 3 and connected with an inflation pile 7, the number of the installation grooves 4 on the surface of the balloon 3 is several and the installation grooves are arranged in a ring shape, wherein the number of the framework plates 6 is the same as that of the installation grooves 4, when the number of the installation grooves 4 is larger, the number of the framework plates 6 is increased accordingly, the more dense framework plates 6 can ensure that the bottom of the air bag 8 is stressed more uniformly when the air bag is inflated, so that the outer surface of the air bag is more rounded and fuller, and the effect is better when the air bag needs to be blocked.

It is noted that the diameter of the balloon 3 is smaller than the diameter of the guide tube 1 in the normal state.

It should be noted that the frame plate 6 has a circular curved structure, the diameter of the circular curved structure is the same as that of the mounting groove 4, and the curvature of the surface of the circular curved structure is the same as that of the notch of the corresponding mounting groove 4, so that the electric telescopic rod 5 can keep a smooth curved structure with the surface of the balloon 3 in the contracted state.

It should be noted that the conducting wire 10 is electrically connected to the electric telescopic rod 5, and the extension and retraction of the electric telescopic rod 5 are controlled by an external switch.

The working principle is as follows:

when interventional therapy is carried out, the balloon 3 is positioned inside the guide tube 1, so the balloon can be inserted into the blood vessel of a patient along with the guide tube 1, and the balloon 3 has smaller volume, so the blood vessel can not be broken even when the balloon needs to be bent, when the balloon 3 moves to a proper position along with the guide tube 1 and needs to be expanded, the electric telescopic rod 5 is controlled by an external switch to extend, then the branched inflation port 11 is utilized to inflate the inside of the balloon 3, the electric telescopic rod 5 can help the balloon 8 to be closer to the tube wall of the guide tube 1, so that the expansion block can be formed on the premise of filling a small amount of gas, the gas filling amount is reduced, namely, the gas filling time is reduced, the expansion block effect can be completed more quickly, and the gas pressure gauge 12 arranged at the branched inflation port 11 can detect the internal gas pressure of the balloon 3 in real time, the situation of excessive gas filling is prevented, and the balloon 3 and the framework plate 6 are made of hard materials during expansion and blockage, so that different fears are caused that the framework is broken due to pressure as in the prior art, and the part connected with the blood vessel is made of the guide tube 1 and the balloon 8 which are made of soft materials, so that the damage to the blood vessel is not caused;

when the air bag 8 is contracted, the electric telescopic rod 5 can be used for being shortened to be matched with the forked inflation inlet 11 for placing, so that the air bag 8 can bear enough pressure and cannot collapse while the air bag can be ensured to be contracted quickly.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A big lumen type sacculus guide pipe, includes guide tube (1), its characterized in that: the balloon is characterized in that a balloon (3) is fixedly arranged in the guiding tube (1) through a fixing piece (2), the balloon (3) is of a flat spherical structure, a mounting groove (4) is formed in the arc surface of the balloon (3), an electric telescopic rod (5) is fixedly arranged in the mounting groove (4), a framework plate (6) is fixedly arranged at the power output end of the electric telescopic rod (5), the outer side of the framework plate (6) is fixedly connected with an air bag (8) through an inflation pile (7), the air bag (8) is wrapped on the outer side of the framework plate (6) in a circular ring shape, an air duct (9) and a lead (10) are fixedly connected to the balloon (3), the lead (10) is located in the air duct (9), the air duct (9) is located in the guiding tube (1), a branched inflation port (11) is formed in the air duct (9), the branched inflation port (11) penetrates through the guiding tube (1) and is provided with a barometer (12), the tail end of the lead (10) penetrates through the guide tube (1) of the air guide tube (9) and extends to the outside.

2. The large-lumen balloon guide catheter according to claim 1, wherein: the inside of sacculus (3) is hollow structure, the surface of sacculus (3) is provided with the hose and is connected with inflatable pile (7), the quantity of sacculus (3) surface mounting groove (4) is a plurality of, and is the annular arrangement.

3. The large-lumen balloon guide catheter according to claim 1, wherein: the fixing piece (2) consists of a connecting rod and a spring, the connecting rod is fixedly installed on the inner wall of the guide tube (1) and the surface of the balloon (3) respectively, and the spring fixedly connects the two connecting rods.

4. The large-lumen balloon guide catheter according to claim 1, wherein: the diameter of the saccule (3) is smaller than that of the guide tube (1) in a normal state.

5. The large-lumen balloon guide catheter according to claim 1, wherein: the framework plates (6) are of circular curved surface structures, the diameters of the framework plates are the same as the diameters of the mounting grooves (4), and the curvatures of the surfaces of the framework plates are the same as the curvatures of the notches of the corresponding mounting grooves (4).

6. The large-lumen balloon guide catheter according to claim 1, wherein: the lead (10) is electrically connected with the electric telescopic rod (5), and the electric telescopic rod (5) is controlled to stretch and retract through an external switch.