Auxiliary device for right heart failure

Abstract

The utility model relates to the field of medical instruments, and particularly discloses a right heart failure auxiliary device which comprises a catheter and a balloon arranged on the catheter in a surrounding mode. The balloon comprises a main balloon body, a first branch balloon body and a second branch balloon body, and the first branch balloon body and the second branch balloon body are both communicated with the far end of the main balloon body and are arranged in a forked mode after being filled with fluid. The catheter comprises a main catheter body, a first branch catheter body and a second branch catheter body which are arranged corresponding to the main balloon body, the first branch balloon body and the second branch balloon body respectively, and the first branch catheter body and the second branch catheter body are both communicated with the far end of the main catheter body. The auxiliary device can adapt to the pulmonary artery anatomical structure and assist the right heart after being implanted.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a right heart failure assistance device. Background Art

[0002] An Intra-aortic Balloon Pump (IABP) is a device for assisting circulation, used to support left ventricular function, especially in patients after cardiac surgery or with cardiogenic shock complicated by acute myocardial infarction; the IABP achieves hemodynamic effects such as increasing coronary artery perfusion, reducing cardiac afterload, and increasing cardiac output by precisely controlling the inflation of the balloon during diastole and deflation during systole of the heart; the existing IABP mainly includes the following parts:

[0003] (1) Balloon catheter: The balloon catheter of the IABP is usually placed in the patient's body, in the descending aorta, generally at the distal end of the subclavian artery opening; the balloon is made of a polymer material such as polyurethane, with good softness and transparency, and occupies 85% to 90% of the aortic lumen after inflation, but does not completely block the aortic lumen; balloon catheters of different volumes are selected according to the height and needs of different patients.

[0004] (2) Drive control system: Located outside the patient's body, responsible for controlling the inflation and deflation of the balloon; the system includes a power supply and a battery, a drive system (such as using helium as the inflation medium), a monitoring system, an adjustment system, and a trigger system; the IABP can adopt various trigger modes, including electrocardiogram trigger, pressure trigger, pacing signal trigger, and internal trigger (fixed frequency), etc.

[0005] (3) Pressure detection system: Detects the pressure at the aortic root through the central cavity pressure tube to help control the timing of the balloon.

[0006] (4) Gas catheter and central pressure tube: The balloon catheter is connected to the drive control system through the gas catheter and the central pressure tube, used to transmit control signals and pressure monitoring signals.

[0007] However, the IAB can only be used for the support of the left ventricle. Due to the different structures of the aorta and the pulmonary artery (the pulmonary artery has a branched structure), the IABP is not directly targeted at the right ventricular function and cannot be properly implanted into the pulmonary artery; in some cases, if the left ventricular function is improved while the right ventricular function fails / insufficient, it may lead to an increase in the right ventricular load, thus affecting the overall cardiac function; therefore, for patients with right ventricular failure, due to the lack of a dedicated device, drug treatment is generally considered clinically, and for some severe cardiovascular diseases, drug treatment may not achieve the ideal efficacy, and long-term use of drugs may affect the patient's quality of life.

[0008] The above technical problems need to be solved. Utility Model Content

[0009] In view of this, the purpose of the present utility model is to provide an auxiliary device for right heart failure, which can adapt to the pulmonary artery anatomical structure and assist the right heart after implantation.

[0010] To achieve the above purpose, the present utility model particularly provides an auxiliary device for right heart failure, including a catheter and a balloon arranged around the catheter;

[0011] The balloon includes a main balloon body, a first branch balloon body and a second branch balloon body. The first branch balloon body and the second branch balloon body are both communicated with the distal end of the main balloon body and are bifurcated after being filled with fluid;

[0012] The catheter includes a main tube body, a first branch tube body and a second branch tube body corresponding to the main balloon body, the first branch balloon body and the second branch balloon body main tube body respectively. The first branch tube body and the second branch tube body are both communicated with the distal end of the main tube body.

[0013] As a further improvement of the technical solution of the present utility model, the first branch balloon body and the second branch balloon body are in a "Y" shape after being filled with fluid.

[0014] As a further improvement of the technical solution of the present utility model, the main balloon body, the first branch balloon body and the second branch balloon body are integrally formed.

[0015] As a further improvement of the technical solution of the present utility model, the device further includes a guide wire assembly; the guide wire assembly includes a first guide wire and a second guide wire. The first guide wire passes through the first branch tube body and the main tube body, and the second guide wire passes through the second branch tube body and the main tube body.

[0016] As a further improvement of the technical solution of the present utility model, a first lumen and a second lumen are provided in the catheter. The first lumen is used for the guide wire assembly to pass through, and the second lumen is used for filling or discharging fluid into the balloon.

[0017] As a further improvement of the technical solution of the present utility model, the catheter is a coaxial double-lumen structure, and the first lumen is located inside the second lumen.

[0018] As a further improvement of the technical solution of the present utility model, the device further includes a pressure detector, and the first lumen is detachably connected to the detection end of the pressure detector.

[0019] As a further improvement of the technical solution of the present utility model, the device further includes a fluid pump, and the second lumen is detachably connected to the output end of the fluid pump.

[0020] As a further improvement to the technical solution of the present utility model, the proximal end of the main body is connected to the first connection end of the tee joint, the first lumen is communicated with the second connection end of the tee joint, and the second lumen is communicated with the third connection end of the tee joint.

[0021] Compared with the prior art, the present utility model has the following beneficial technical effects:

[0022] A right heart failure assistance device provided by the present utility model, by designing the balloon as a structure combined with a main balloon body, a first branch balloon body and a second branch balloon body, and at the same time, both the first branch balloon body and the second branch balloon body are communicated with the distal end of the main balloon body and are bifurcated after being filled with fluid, so as to adapt to the anatomical structure of the pulmonary artery. The first branch balloon body and the second branch balloon body correspond to the two branches of the pulmonary artery, and are transported in cooperation with the catheter, and can be accurately implanted into the pulmonary artery, which helps to reduce complications during the implantation process; after implantation, by controlling the inflation and deflation of the balloon, the right heart can be assisted.

[0023] The advantages of the additional aspects of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0024] Figure 1 Schematic structural diagram of a right heart failure assistance device provided for Example 1;

[0025] Figure 2 Schematic structural diagram of a right heart failure assistance device provided for Example 2;

[0026] Figure 3 For Figure 2 A-A cross-sectional view in

[0027] Figure 4 Schematic structural diagram of a right heart failure assistance device provided for Example 3. Detailed Embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings of the present utility model.

[0029] Example 1

[0030] As Figure 1 shown: A right heart failure assistance device provided in this embodiment includes a catheter and a balloon arranged around the catheter; similar to IABP, the catheter is used to transport the balloon, and the balloon is inflated and deflated by transporting fluid (gas or liquid) through the catheter, and when the balloon contracts, it adheres to a part of the outer surface of the catheter.

[0031] A right heart failure assistance device provided in this embodiment mainly has the following improvements: The balloon includes a main balloon body 11, a first branch balloon body 12, and a second branch balloon body 13. The first branch balloon body 12 and the second branch balloon body 13 are both connected to the distal end of the main balloon body 11 and are bifurcated after being filled with fluid; The catheter includes a main tube body 21, a first branch tube body 22, and a second branch tube body 23 corresponding to the main tube body 21 of the main balloon body 11, the first branch balloon body 12, and the second branch balloon body 13 respectively. The first branch tube body 22 and the second branch tube body 23 are both connected to the distal end of the main tube body 21.

[0032] The main balloon body 11, the first branch balloon body 12, and the second branch balloon body 13 are all elastic structures; The first branch balloon body 12 and the second branch balloon body 13 can be in a "Y" shape after being filled with fluid; Preferably, the main balloon body 11, the first branch balloon body 12, and the second branch balloon body 13 are integrally formed.

[0033] By designing the balloon as a combined structure of the main balloon body 11, the first branch balloon body 12, and the second branch balloon body 13, and at the same time, the first branch balloon body 12 and the second branch balloon body 13 are both connected to the distal end of the main balloon body 11 and are bifurcated after being filled with fluid, it can adapt to the anatomical structure of the pulmonary artery. The first branch balloon body 12 and the second branch balloon body 13 correspond to the two branches of the pulmonary artery. Cooperating with the catheter for delivery, it can be accurately implanted into the pulmonary artery, which helps to reduce complications during the implantation process; After implantation, by controlling the inflation and deflation of the balloon, the right heart can be assisted; For example, by increasing the blood volume in the pulmonary artery during diastole, it helps to improve the filling of the right ventricle, thereby improving the pumping function of the heart, and reducing the resistance in the pulmonary artery during systole, which helps to reduce the load on the right ventricle.

[0034] Embodiment Two

[0035] A right heart failure assistance device provided in this embodiment is further improved on the basis of the structure and principle shown in Embodiment One. Therefore, the same structures and principles between the two will not be elaborated again.

[0036] As Figure 2 shown, a right heart failure assistance device provided in this embodiment further includes a guide wire assembly; The guide wire assembly includes a first guide wire 31 and a second guide wire 32. The first guide wire 31 passes through the first branch tube body 22 and the main tube body 21, and the second guide wire 32 passes through the second branch tube body 23 and the main tube body 21.

[0037] After the guide wire assembly is successfully inserted, it can be used to guide the catheter to be delivered along a specific path. During use, the first guide wire 31 and the second guide wire 32 are first sent into the pulmonary artery respectively. Most of the paths formed by the two are overlapped, only the last different branches of the pulmonary artery are entered; the first branch tube body 22 is delivered along the first guide wire 31 and finally enters a branch of the pulmonary artery, and the second branch tube body 23 is delivered along the second guide wire 32 and finally enters another branch of the pulmonary artery. At this time, the first branch tube body 22 and the second branch tube body 23 can be in a "V" shape, and the first branch balloon 12 and the second branch balloon 13 also bifurcate into a "V" shape; after positioning, the guide wire assembly can be withdrawn.

[0038] In this embodiment, a first lumen 2a and a second lumen 2b are provided in the catheter. The first lumen 2a is used for the guide wire assembly to pass through, and the second lumen 2b is used to fill or discharge fluid into the balloon. The first lumen 2a and the second lumen 2b are independent of each other, and this independence exists simultaneously in the main tube body 21, the first branch tube body 22 and the second branch tube body 23; preferably, the catheter can be a coaxial double-lumen structure, and the first lumen 2a is located inside the second lumen 2b. At this time, the catheter can be divided into an inner tube part 23 and an outer tube part 24 arranged coaxially.

[0039] Embodiment Three

[0040] The right heart failure assistance device provided in this embodiment is further improved on the basis of the structure and principle shown in Embodiment One or Embodiment Two. Therefore, the same structure and principle between the two will not be described in detail.

[0041] As Figure 4 shown, the right heart failure assistance device provided in this embodiment further includes a pressure detector 4, and the first lumen 2a is detachably connected to the detection end of the pressure detector 4. After the guide wire assembly is withdrawn, the first lumen 2a can be connected to the pressure detector 4. At this time, the pressure of the pulmonary circulation can be monitored in real time to help evaluate the condition of right heart insufficiency.

[0042] At the same time, the device can also include a fluid pump, and the second lumen 2b is detachably connected to the output end of the fluid pump 5. The fluid pump 5 is used to fill or discharge fluid into the balloon to control the inflation and contraction of the balloon. Of course, the pressure detector 4 and the fluid pump 5 can both be integrated into an existing counterpulsation machine.

[0043] In addition, for the convenience of connection, a three-way joint 6 can also be provided. The proximal end of the main tube body 21 is connected to the first connection end of the three-way joint 6, the first lumen 2a is communicated with the second connection end of the three-way joint 6, and the second lumen 2b is communicated with the third connection end of the three-way joint 6.

[0044] The above are only the embodiments of the present utility model, and common general knowledge such as the specific structures and characteristics known in the solutions is not described in detail herein. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several modifications and improvements can be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope claimed in this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A right heart failure assist device, comprising a catheter and a balloon arranged around the catheter; characterized in that: The balloon comprises a main balloon body, a first branch balloon body and a second branch balloon body, wherein the first branch balloon body and the second branch balloon body are both connected to the distal end of the main balloon body and are bifurcated after being filled with fluid; The catheter comprises a main body, a first branch body and a second branch body respectively arranged corresponding to the main balloon body, the first branch balloon body and the second branch balloon main body. The first branch body and the second branch body are both connected to the distal end of the main body.

2. A right heart failure assist device according to claim 1, characterized in that: The first branch balloon and the second branch balloon are in a "Y" shape after being filled with fluid.

3. A right heart failure assist device according to claim 1, characterized in that: The main capsule, the first branch capsule and the second branch capsule are integrally formed.

4. A right heart failure assist device according to any one of claims 1 to 3, characterized in that: The device also includes a guide wire assembly; the guide wire assembly includes a first guide wire and a second guide wire, the first guide wire passes through the first branch tube body and the main tube body, and the second guide wire passes through the second branch tube body and the main tube body.

5. A right heart failure assist device according to claim 4, characterized in that: The catheter is provided with a first lumen and a second lumen, wherein the first lumen is used for the guidewire assembly to pass through, and the second lumen is used for filling or discharging fluid into the balloon.

6. A right heart failure assist device according to claim 5, characterized in that: The catheter is a coaxial double-lumen structure, and the first lumen is located inside the second lumen.

7. A right heart failure assist device according to claim 5, characterized in that: The device also includes a pressure detector, and the first lumen is detachably connected to a detection end of the pressure detector.

8. A right heart failure assist device according to claim 5, characterized in that: The device further comprises a fluid pump, wherein the second tube cavity is detachably connected to an output end of the fluid pump.

9. A right heart failure assist device according to claim 5, characterized in that: The proximal end of the main pipe body is connected to the first connecting end of the three-way joint, the first tube cavity is connected to the second connecting end of the three-way joint, and the second tube cavity is connected to the third connecting end of the three-way joint.

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