Implant for ventricular septation

Abstract

Provided is an implant for ventricular septation, comprising a central rod (1); a plurality of supporting rods (2), wherein the plurality of supporting rods (2) are circumferentially distributed along the central rod (1), and the supporting rods (2) can be folded and unfolded along the central rod (1); a separation membrane (3), wherein the separation membrane (3) is attached over the plurality of supporting rods (2) and can be folded and unfolded along with the supporting rods (2); and a positioning member (4), wherein when the positioning member (4) abuts against the supporting rods (2) and moves axially along the central rod (1), the positioning member (4) can adjust the unfolding angle of the supporting rods (2), a locking structure is further arranged between the positioning member (4) and the central rod (1), and when the supporting rods (2) reach a proper unfolding angle, the locking structure is configured for keeping the relative position between the positioning member (4) and the central rod (1) so as to keep the unfolding angle of the supporting rods (2). According to the described implant, by moving the positioning member (4), the supporting rods (2) are gradually unfolded until the periphery of the separation membrane (3) is in contact with the inner wall of the ventricle, the relative position between the positioning member (4) and the central rod (1) is kept by means of the locking structure, and the supporting rods (2) and the separation membrane (3) are supported by means of the positioning member (4), so that the implant can be firmly fixed in the ventricle and is not prone to dislodgement.

Description

Implants used to separate heart chambers Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to an implant for separating ventricles. 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 congestive heart failure.

[0003] One treatment option for congestive heart failure is to implant a septum within the ventricle to separate the ventricle into a working and inactive portion, reducing the volume of the ventricle required for pumping blood and improving the ejection fraction. However, the septum is not securely fixed within the ventricle and can easily become detached after implantation, resulting in adverse consequences.

[0004] Summary of the Invention

[0005] The present application provides an implant for separating ventricles, which can be firmly fixed in the ventricles, thereby improving the safety and service life of the implant.

[0006] In order to achieve the above objectives, the technical solutions provided by this application are as follows:

[0007] An implant for separating a ventricle of a heart, comprising:

[0008] center pole;

[0009] A plurality of support rods; each of the support rods has a fixed end and a free end; the fixed end is connected to the same axial position of the central rod; the plurality of support rods are distributed circumferentially along the central rod, and the support rods are configured to be foldable and unfoldable along the central rod;

[0010] A separation membrane; the separation membrane is covered on the plurality of support rods so that the separation membrane folds and unfolds following the support rods;

[0011] A positioning member; the positioning member can abut against each of the support rods; the positioning member can move axially along the center rod; when the positioning member abuts against the support rod and moves axially along the center rod, the positioning member is configured to adjust the deployment angle of the support rod; a locking structure is also provided between the positioning member and the center rod; when the support rod reaches a set deployment angle, the locking structure is used to maintain the relative position between the positioning member and the center rod to maintain the deployment angle of the support rod.

[0012] Furthermore, the locking structure includes locking teeth axially arranged on the surface of the center rod, and a locking hole opened on the positioning member, and the locking hole is sleeved outside the center rod; the locking hole is configured to pass through the locking teeth when sliding toward the distal end, and be locked by the locking teeth when moving toward the proximal end.

[0013] Furthermore, the locking structure includes an external thread on the surface of the center rod and an internal threaded hole opened on the positioning member; the internal threaded hole is adapted to the external thread, and when a rotational force is applied to the positioning member, the positioning member produces axial displacement along the center rod.

[0014] Furthermore, the positioning member is disc-shaped.

[0015] Furthermore, the plurality of support rods are evenly distributed along the circumference of the central rod.

[0016] Furthermore, the free end of the support rod has a spike portion; the spike portion is used to be inserted into the inner wall of the ventricle.

[0017] Furthermore, in a stress-free state, the plurality of support rods are in a folded state.

[0018] Furthermore, the separation membrane is made of nylon, PET or polyester.

[0019] Furthermore, the support rod has bending elasticity. Beneficial effects:

[0020] The implant for separating the ventricles provided in the present application, after being delivered to the target position of the ventricle, gradually unfolds the support rod and the separation membrane by moving the positioning member until the outer periphery of the separation membrane contacts the inner wall of the ventricle, and then maintains the relative position between the positioning member and the center rod by the locking structure to maintain the unfolding angle of the support rod and the separation membrane; the support rod and the separation membrane are supported by the positioning member, so that the implant can be firmly fixed in the ventricle and is not easy to fall off.

[0021] With reference to the following description and drawings, the specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope.

[0022] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0023] It should be emphasized that the term "include / comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without expending creative labor.

[0025] FIG1 is a schematic structural diagram of an implant for separating ventricles according to an embodiment of the present disclosure;

[0026] FIG2 is a schematic structural diagram of an implant for separating ventricles provided in an embodiment of the present disclosure in a folded state;

[0027] FIG3 is a schematic structural diagram of a center rod provided in one embodiment of this specification. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope. After reading the present invention, modifications of various equivalent forms of the present invention by those skilled in the art all fall within the scope defined in this application.

[0029] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0030] The following describes and illustrates the interventional surgical robot system according to the embodiments of this specification, with reference to Figures 1 to 3. It should be noted that, in the embodiments of the present invention, identical reference numerals denote identical components. For the sake of brevity, detailed descriptions of identical components will be omitted in different embodiments, and descriptions of identical components may be cross-referenced and referenced.

[0031] This specification provides an implant for separating a ventricle, as shown in FIG1 and FIG2 , comprising:

[0032] Center rod 1;

[0033] A plurality of support rods 2; the support rods 2 include fixed ends 201 and free ends 202; the fixed ends 201 are connected to the same axial position of the central rod 1; the plurality of support rods 2 are evenly distributed along the circumference of the central rod 1; the free ends 202 are movable, and when the free ends 202 move, the support rods 2 and the central rod 1 should always be substantially in the same plane, so that the support rods 2 can be folded and unfolded along the central rod 1;

[0034] Separator membrane 3; the separator membrane 3 is covered on the plurality of support rods 2 so that the separator membrane 3 folds and unfolds along with the support rods 2; wherein the material of the separator membrane 3 may be nylon, PET, polyester or other;

[0035] Positioning member 4; the positioning member 4 can abut against each of the support rods 2; the positioning member 4 can move axially along the center rod 1; when the positioning member 4 abuts against the support rod 2 and moves axially along the center rod 1, the positioning member 4 is configured to adjust the deployment angle of the support rod 2; there is also a locking structure between the positioning member 4 and the center rod 1; when the support rod 2 reaches a suitable deployment angle, that is, when the separation membrane 3 contacts the inner wall of the ventricle and plays a separation role, the locking structure is used to maintain the relative position between the positioning member 4 and the center rod 1 to maintain the deployment angle of the support rod 2.

[0036] Optionally, the positioning member 4 is disc-shaped and its diameter is immutable. Therefore, the closer the positioning member 4 is to the connection between the fixed end 201 and the center rod 1, as shown in Figure 1, the larger the expansion angle of the support rod 2; the farther the positioning member 4 is from the connection between the fixed end 201 and the center rod 1, as shown in Figure 2, the smaller the expansion angle of the support rod 2.

[0037] Optionally, the fixed end 201 is fixedly connected to the central rod 1, and the support rod 2 has a certain bending elasticity, so that it can be folded and unfolded under the action of the positioning member 4. In a stress-free state, the plurality of support rods 2 are in a folded state to facilitate the movement of the implant in the human body. The folded state refers to a relative state. In the folded state, the implant can move in the human body; and after reaching the ventricle, it needs to be unfolded to play a separating role. From the folded state to the maximum unfolded state, the angular displacement of the free end 202 can be 20° to 80°.

[0038] The implant for separating the ventricles provided in the embodiment of the present application, after being delivered to the target position of the ventricle, gradually unfolds the support rod 2 and the separation membrane 3 by moving the positioning member 4 until the outer periphery of the separation membrane 3 contacts the inner wall of the ventricle, and then the relative position between the positioning member 4 and the center rod 1 is maintained by the locking structure to maintain the unfolding angle of the support rod 2 and the separation membrane 3; the support rod 2 and the separation membrane 3 are supported by the positioning member 4, so that the implant can be firmly fixed in the ventricle and is not easy to fall off.

[0039] In an optional solution, as shown in FIG3 , the locking structure includes locking teeth 101 arranged axially on the surface of the central rod 1 and a locking hole provided on the positioning member 4, wherein the locking hole is sleeved on the outside of the central rod 1; the locking hole is configured to pass through the locking teeth 101 when sliding toward the distal end, and to be locked by the locking teeth 101 when moving toward the proximal end. Specifically, the proximal slope 1011 of the locking teeth 101 and the central rod 1 have an angle of approximately 180°, for example, 160°, so that the size of the locking hole allows the locking teeth 101 to pass through when rotating and sliding toward the distal end; the distal slope 1012 of the locking teeth 101 and the central rod 1 have an angle of approximately 90°, for example, 100°, so that the size of the locking hole allows the locking teeth 101 to be blocked when sliding toward the proximal end, thereby achieving a locking effect and preventing the support rod 2 from folding. The multiple locking teeth 101 can be continuous or spaced apart. In the present invention, the proximal end refers to the side of the interventional instrument close to the doctor, and the distal end refers to the side away from the doctor.

[0040] In another alternative embodiment, the locking structure includes an external thread on the surface of the central rod 1 and an internal threaded hole in the positioning member 4; the internal threaded hole mates with the external thread, and when a rotational force is applied to the positioning member 4, the positioning member 4 is axially displaced along the central rod 1. The rotational force can be applied to the positioning member 4 by a catheter, and when the support rod 2 reaches the appropriate deployment angle, the catheter is withdrawn from the body, and the relative position between the positioning member 4 and the central rod 1 does not change.

[0041] Optionally, the free end 202 of the support rod 2 has a spike portion 2021. When the support rod 2 is deployed, the spike portion 2021 is inserted into the inner wall of the ventricle to play an anchoring role. The spike portion 2021 can be a straight hook or a curved hook.

[0042] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

[0043] It should be understood that the above description is for illustration and not for limitation. Many embodiments and applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. For comprehensive purposes, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference.

Claims

1. An implant for separating a ventricle, characterized in that include: center rod; A plurality of support rods; each of the support rods has a fixed end and a free end; the fixed end is connected to the same axial position of the central rod; the plurality of support rods are distributed circumferentially along the central rod, and the support rods are configured to be foldable and unfoldable along the central rod; A separation membrane; the separation membrane is covered on the plurality of support rods so that the separation membrane folds and unfolds following the support rods; A positioning member; the positioning member can abut against each of the support rods; the positioning member can move axially along the center rod; when the positioning member abuts against the support rod and moves axially along the center rod, the positioning member is configured to adjust the deployment angle of the support rod; a locking structure is also provided between the positioning member and the center rod; when the support rod reaches a set deployment angle, the locking structure is used to maintain the relative position between the positioning member and the center rod to maintain the deployment angle of the support rod.

2. The implant according to claim 1, wherein: The locking structure includes locking teeth axially arranged on the surface of the center rod, and a locking hole opened on the positioning member, and the locking hole is sleeved outside the center rod; the locking hole is configured to pass through the locking teeth when sliding toward the distal end, and be locked by the locking teeth when moving toward the proximal end.

3. The implant according to claim 1, wherein: The locking structure includes an external thread on the surface of the center rod and an internal threaded hole opened on the positioning member; the internal threaded hole is adapted to the external thread, and when a rotational force is applied to the positioning member, the positioning member generates an axial displacement along the center rod.

4. The implant according to claim 1, wherein: The positioning piece is disc-shaped.

5. The implant according to claim 1, wherein: The plurality of support rods are evenly distributed along the circumference of the central rod.

6. The implant according to claim 1, wherein: The free end of the support rod has a spike portion; the spike portion is used to be inserted into the inner wall of the ventricle.

7. The implant according to claim 1, wherein: In a stress-free state, the plurality of support rods are in a folded state.

8. The implant according to claim 1, wherein: The separation membrane is made of nylon, PET or polyester.

9. The implant according to claim 1, wherein: The support rod has bending elasticity.

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