Ventricular intervention system for ischemic heart failure

Abstract

The utility model discloses a ventricular intervention system for ischemic heart failure, and relates to the technical field of medical instruments. According to the technical scheme, the device is characterized by comprising an implant used for separating the ventricle and a leading-in device; the implant comprises a central rod, a plurality of support rods and a separation membrane; the leading-in device comprises a first catheter and a balloon arranged on the first catheter; the far end of the first catheter is connected with the central rod; a protruding part is arranged on the outer surface of the balloon; when the balloon is converted from the pressure relief state to the pressure charging state, the protruding part is configured to make contact with the supporting rod and apply acting force to the supporting rod, so that the separation film is converted from the folded state to the unfolded state. Due to the fact that the protruding portion on the balloon makes contact with the supporting rod, on one hand, acting force exerted on the supporting rod by the balloon can be more uniform, the separation membrane can be more evenly unfolded, on the other hand, direct contact between the balloon and the supporting rod is avoided, the balloon is prevented from being broken by the supporting rod, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically, to a ventricular intervention system for ischemic heart failure. Background Art

[0002] Viral infection, coronary artery ischemia and other conditions can cause partial damage to myocardial tissue. The damaged myocardial tissue not only loses the function of pumping blood, but also causes heart enlargement, further reduces the ejection fraction and causes ischemic heart failure.

[0003] An alternative treatment for ischemic heart failure is to place an implant inside the ventricle that separates the ventricle into a working and a non-working part, thereby reducing the volume of the ventricle used to pump blood and improving the ejection fraction.

[0004] The implant needs to remain folded as it moves through the blood vessels, and then be converted to an expanded state once it reaches the ventricle.

[0005] Currently, a balloon is generally used to convert the implant from a folded state to an unfolded state, but the uniformity of the force applied to the implant when the balloon is inflated and the safety of the balloon need to be improved. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a ventricular intervention system for ischemic heart failure, which can make the force exerted by the balloon on the support rod more uniform and make the separation membrane unfold more evenly through the protrusion on the balloon. On the other hand, it avoids direct contact between the balloon and the support rod, prevents the support rod from causing the balloon to rupture, and improves safety.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A ventricular intervention system for ischemic heart failure, comprising an implant for separating a ventricle, and an introduction device;

[0009] The implant comprises a central rod, a plurality of support rods and a separation membrane; the support rod comprises a fixed end and a free end, the fixed end of the support rod is connected to the same axial position of the central rod; the plurality of support rods are distributed along the circumference of the central rod, and the support rods are configured to be foldable and unfoldable along the central rod; the separation membrane is covered on the plurality of support rods so that the separation membrane follows the folding and unfolding of the support rods;

[0010] The introduction device comprises a first catheter and a balloon arranged on the first catheter; the distal end of the first catheter is connected to the central rod; the outer surface of the balloon is provided with a protrusion;

[0011] Wherein, when the balloon is converted from a depressurized state to a pressurized state, the protrusion is configured to contact the support rod and apply a force to the support rod, so that the separation membrane is converted from a folded state to an unfolded state.

[0012] Furthermore, the protrusion is ring-shaped, and the outer surface of the balloon is provided with a plurality of protrusions arranged along the axial direction.

[0013] Furthermore, the protrusion extends spirally along the outer surface of the balloon.

[0014] Furthermore, the outer surface of the balloon is provided with a plurality of protrusions arranged along the circumferential direction, and the plurality of protrusions are configured to contact the plurality of support rods respectively.

[0015] Furthermore, the protrusion is integrally formed with the balloon; or, the protrusion is adhered to the outer surface of the balloon.

[0016] Furthermore, the first conduit is connected to the center rod via threads.

[0017] Furthermore, a fluid channel communicating with the balloon is provided in the first catheter.

[0018] Furthermore, a spike portion is provided at the free end of the support rod.

[0019] Furthermore, the introduction device also includes a second catheter sleeved on the first catheter; a accommodating cavity is provided at the distal end of the second catheter; and the free ends of the plurality of support rods can be placed in the accommodating cavity so that the separation membrane remains in a folded state.

[0020] Furthermore, the plurality of support rods are evenly distributed along the circumference of the central rod.

[0021] In summary, the utility model has the following beneficial effects:

[0022] (1) The protrusion on the balloon contacts the support rod, which can make the force exerted by the balloon on the support rod more uniform, so that the separation membrane can be deployed more uniformly, thereby improving the separation effect; on the other hand, it can avoid direct contact between the balloon and the support rod, prevent the support rod from causing the balloon to rupture, and improve safety;

[0023] (2) The outer surface of the balloon is provided with a plurality of annular protrusions arranged along the axial direction. When the balloon is converted from a depressurized state to a pressurized state, at least one annular protrusion contacts each support rod, thereby further improving the uniformity of the force applied to the support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The structure of the ventricular intervention system for ischemic heart failure in the embodiment is shown in FIG. Figure 1 ;

[0025] Figure 2 The structure of the ventricular intervention system for ischemic heart failure in the embodiment is shown in FIG. Figure 2 ;

[0026] Figure 3 The structure of the ventricular intervention system for ischemic heart failure in the embodiment is shown in FIG. Figure 3 .

[0027] In the figure: 101, central rod; 102, support rod; 1021, fixed end; 1022, free end; 1023, spike portion; 103, separation membrane; 201, first catheter; 202, balloon; 2021, protrusion; 203, second catheter; 2031, accommodating cavity. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention. Example

[0030] A ventricular intervention system for ischemic heart failure, referring to Figures 1 to 3 , which includes an implant for separating ventricles, and an introduction device; specifically, the implant in this embodiment includes a central rod 101, a plurality of support rods 102 and a separation membrane 103; the support rod 102 includes a fixed end 1021 and a free end 1022, the fixed ends of the plurality of support rods 102 are connected to the same axial position of the central rod 101, and the plurality of support rods 102 are evenly distributed along the circumference of the central rod 101; the free end of the support rod 102 is movable, and when the free end 1022 moves, the support rod 102 and the central rod 101 are basically kept on the same plane, so that the support rod 102 is folded and unfolded along the central rod 101; the support rod 102 has bending elasticity, and the angular displacement of the free end 1022 of the support rod 102 from the folded state to the maximum unfolded state is 20°-80°; a spike portion 1023 is provided on the free end 1022 of the support rod 102, and the spike portion 1023 is used to be inserted into the inner wall of the ventricle.

[0031] Reference Figures 1 to 3 The separator 103 is covered on the plurality of support rods 102 so that the separator 103 follows the support rods 102 to be folded and unfolded; that is, the separator 103 has a folded state and an unfolded state; the separator 103 may be made of nylon, PET or polyester.

[0032] Reference Figures 1 to 3 Specifically, the introduction device in this embodiment includes a first catheter 201, a second catheter 203, and a balloon 202 arranged on the first catheter 201; the distal end of the first catheter 201 is connected to the central rod 101, which is used to push the implant into the ventricle; the first catheter 201 and the central rod 101 are threadedly connected, so as to facilitate the disassembly and separation of the first catheter 201 and the central rod 101; a fluid channel connected to the balloon 202 is provided in the first catheter 201, and the fluid channel is used to pump fluid into the balloon 202 to realize the inflation and depressurization of the balloon 202.

[0033] Reference Figures 1 to 3 The second catheter 203 is sleeved on the first catheter 201, and a receiving cavity 2031 is provided at the distal end of the second catheter 203; the free ends of the plurality of support rods 102 can be placed in the receiving cavity 2031, so that when the implant is pushed into the ventricle, the separation membrane 103 remains in a folded state.

[0034] Reference Figures 1 to 3 Preferably, in this embodiment, the outer surface of the balloon 202 is provided with a protrusion 2021; when the balloon 202 is converted from a depressurized state to a pressurized state, the protrusion 2021 is configured to contact the support rod 102 and apply a force to the support rod 102, so that the support rod 102 is converted from a folded state to an unfolded state, and the separation membrane 103 also follows the support rod 102 from the folded state to the unfolded state; in this embodiment, the protrusion 2021 on the balloon 202 is in contact with the support rod 102, which, on the one hand, can make the force applied by the balloon 202 on the support rod 102 more uniform, so that the separation membrane 103 is more evenly unfolded, and on the other hand, avoid direct contact between the balloon 202 and the support rod 102, prevent the support rod 102 from causing the rupture of the balloon 202, and improve safety.

[0035] Reference Figures 1 to 3 Specifically, in this embodiment, the protrusion 2021 is annular, and the outer surface of the balloon 202 is provided with a plurality of protrusions 2021 arranged along the axial direction; when the balloon 202 is converted from a depressurized state to a pressurized state, at least one annular protrusion 2021 contacts each support rod 102 and applies a force to the support rod 102, so that the support rod 102 and the separation membrane 103 are converted from a folded state to an unfolded state; that is, among the plurality of protrusions 2021 arranged along the axial direction, one protrusion 2021 contacts the support rod 102, or a plurality of protrusions 2021 contact the support rod 102 at the same time; of course, in other optional embodiments, the protrusions may also adopt other structures, which are not limited here; for example, the protrusions extend spirally along the outer surface of the balloon; or, the outer surface of the balloon is provided with a plurality of protrusions arranged circumferentially, and the plurality of protrusions are configured to contact the plurality of support rods respectively.

[0036] Reference Figures 1 to 3 Preferably, in this embodiment, the protrusion 2021 and the balloon 202 are integrally formed to facilitate processing; of course, in other optional embodiments, the protrusion may also be bonded to the outer surface of the balloon, which is not limited here.

[0037] Here’s how it works:

[0038] The first catheter 201 is connected to the central rod 101 by threads, and the free ends 1022 of the plurality of support rods 102 are placed in the accommodating cavity 2031 of the second catheter 203, so that the implant is in a folded state, and the balloon 202 is in a depressurized state;

[0039] The implant is pushed to a predetermined position in the ventricle by an introduction device;

[0040] Pull out the second conduit 203, so that the free ends 1022 of the plurality of support rods 102 are in a free state;

[0041] The balloon 202 is pressurized through the fluid channel in the first catheter 201, and the balloon 202 gradually expands, so that the balloon 202 is converted from a depressurized state to a pressurized state; after the balloon 202 expands, a force is applied to the support rod 102 through the protrusion 2021, so that the support rod 102 and the separation membrane 103 are gradually unfolded; after the support rod 102 is unfolded, the spike portion 1023 of the free end 1022 of the support rod 102 is inserted into the inner wall of the ventricle, so that the implant is fixed in the ventricle to play a separation role;

[0042] The first catheter 201 is rotated to separate the first catheter 201 from the central rod 101 , and then the first catheter 201 is pulled out.

Claims

1. A ventricular intervention system for ischemic heart failure, characterized in that: Includes implants for separating heart chambers, and introduction devices; The implant comprises a central rod, a plurality of support rods and a separation membrane; the support rod comprises a fixed end and a free end, the fixed end of the support rod is connected to the same axial position of the central rod; the plurality of support rods are distributed along the circumference of the central rod, and the support rods are configured to be foldable and unfoldable along the central rod; the separation membrane is covered on the plurality of support rods so that the separation membrane follows the folding and unfolding of the support rods; The introduction device comprises a first catheter and a balloon arranged on the first catheter; the distal end of the first catheter is connected to the central rod; the outer surface of the balloon is provided with a protrusion; Wherein, when the balloon is converted from a depressurized state to a pressurized state, the protrusion is configured to contact the support rod and apply a force to the support rod, so that the separation membrane is converted from a folded state to an unfolded state.

2. The ventricular intervention system for ischemic heart failure according to claim 1, characterized in that: The protrusion is ring-shaped, and the outer surface of the balloon is provided with a plurality of protrusions arranged along the axial direction.

3. The ventricular intervention system for ischemic heart failure according to claim 1, characterized in that: The protrusions extend helically along the outer surface of the balloon.

4. The ventricular intervention system for ischemic heart failure according to claim 1, characterized in that: The outer surface of the balloon is provided with a plurality of protrusions arranged along the circumferential direction, and the plurality of protrusions are configured to contact the plurality of support rods respectively.

5. The ventricular intervention system for ischemic heart failure according to claim 1, characterized in that: The protrusion is integrally formed with the balloon; or, the protrusion is adhered to the outer surface of the balloon.

6. The ventricular intervention system for ischemic heart failure according to claim 1, characterized in that: The first conduit is connected to the center rod via threads.

7. The ventricular intervention system for ischemic heart failure according to claim 1, characterized in that: A fluid channel communicating with the balloon is disposed in the first catheter.

8. The ventricular intervention system for ischemic heart failure according to claim 1, characterized in that: The free end of the support rod is provided with a spike portion.

9. The ventricular intervention system for ischemic heart failure according to claim 1, characterized in that: The introduction device also includes a second catheter sleeved on the first catheter; a housing cavity is provided at the distal end of the second catheter; the free ends of the plurality of support rods can be placed in the housing cavity to keep the separation membrane in a folded state.

10. The ventricular intervention system for ischemic heart failure according to claim 1, characterized in that: The plurality of support rods are evenly distributed along the circumference of the central rod.

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