Separating interatrial hole closure device

Abstract

The application provides a detachable interatrial septum plugging device, which comprises a plug member and a taking and placing member. The plug member comprises a first pipe body and a balloon. The balloon surrounds the first pipe body and is formed on the outer periphery of the first pipe body. The second end of the first pipe body is formed with a trumpet-shaped interface. A switch mechanism is formed in the first pipe body. The interior of the first pipe body is communicated with the interior of the balloon. The balloon is used for clamping in the interatrial septum after inflation, and the interatrial septum is plugged. The taking and placing member is used for placing the plug member in the interatrial septum or taking the plug member out of the interatrial septum, and the balloon of the plug member is filled and discharged with gas or liquid. The taking and placing member comprises a second pipe body. The first end of the second pipe body is formed with a tapered head end corresponding to the trumpet-shaped interface, which is used for being inserted into the trumpet-shaped interface and combined with the trumpet-shaped interface. A balloon pipeline is formed on one side of the second pipe body. The balloon pipeline is communicated with the interior of the second pipe body.

Description

TECHNICAL FIELD

[0001] The present application relates to a medical device, in particular to a detachable interventricular foramen occluder. BACKGROUND

[0002] The interventricular foramen is a hole connecting the lateral ventricle and the third ventricle. When surgery is performed on the lateral ventricle, foreign matter, broken tissue and other substances generated during the surgery can easily pass through the interventricular foramen into the third ventricle and further into the fourth ventricle. These foreign matter and broken tissue are almost impossible to be taken out after entering the third ventricle and the fourth ventricle, resulting in a heavy postoperative reaction of the patient and leaving the foreign matter in the ventricular system, which is not conducive to the health of the patient.

[0003] A ventriculoscope is an important device for brain ventricle surgery. The ventriculoscope has two channels formed thereon, one is a main channel with a larger diameter, and the other is a side channel with a smaller diameter. SUMMARY

[0004] In view of the above problems, the present application aims to provide a detachable interventricular foramen occluder which is placed into the interventricular foramen by means of the main channel of the ventriculoscope and occludes the interventricular foramen to ensure that foreign matter or broken cells generated during the surgery do not flow into the third and fourth ventricles downstream.

[0005] The detachable interventricular foramen occluder of the present application comprises a plug member and a taking and placing member.

[0006] The plug member comprises a first tube body and a balloon. The balloon is formed on the outer periphery of the first tube body and surrounds the first tube body. The second end of the first tube body is formed with a flared interface. A switch mechanism is formed in the first tube body for controlling the opening and closing of the inside of the first tube body and the flared interface. The inside of the first tube body is in communication with the inside of the balloon. The balloon is used to be clamped in the interventricular foramen after inflation to occlude the interventricular foramen.

[0007] The taking and placing member is used to place the plug member into the interventricular foramen or take the plug member out of the interventricular foramen, and charge or discharge gas or liquid to the balloon of the plug member. The taking and placing member comprises a second tube body. The first end of the second tube body is formed as a tapered head end corresponding to the flared interface for being inserted into the flared interface and combined with the flared interface. A balloon pipeline is formed on one side of the second tube body. The balloon pipeline is in communication with the inside of the second tube body. When the switch mechanism is in the open state, the balloon pipeline, the second tube body and the balloon are in communication to charge or discharge gas or liquid.

[0008] Preferably, the balloon is formed as a gourd-shaped balloon.

[0009] Preferably, a circular groove with a circular arc cross section is formed on the inner periphery of the flared interface.

[0010] The outer periphery of the tapered head end is formed with an annular balloon body; the annular balloon body is embedded in the groove and fixedly combined with the trumpet-shaped interface when the annular balloon body is in a filled state, and the trumpet-shaped interface is in a sealed state with the tapered head;

[0011] The annular balloon is inflated or deflated by gas or liquid through an annular balloon pipeline; the annular balloon pipeline is arranged in the second pipe body, and a second end of the annular balloon pipeline extends to the outside from the side surface of the second pipe body.

[0012] Preferably, the switch mechanism comprises a back baffle, a first solenoid spring, a frustoconical sealing plug, and a front baffle ring.

[0013] The back baffle is fixedly formed in the middle part of the first pipe body, and a first through hole is formed in the middle part of the back baffle; the front baffle ring is fixedly formed at the second end of the first pipe body; the inner periphery of the front baffle ring corresponds to the outer periphery of the frustoconical sealing plug; and the first solenoid spring is supported between the back baffle and the frustoconical sealing plug.

[0014] Preferably, the first pipe body is formed with a side hole, through which the first pipe body communicates with the inside of the balloon.

[0015] Preferably, an end cover is mounted at the second end of the second pipe body; a second through hole is formed in the middle part of the end cover, the first end of the ejector rod enters the second pipe body through the second through hole, extends along the length direction of the second pipe body, and is exposed from the tapered head end; the first end of the ejector rod is used to push the frustoconical sealing plug in the front baffle ring, so that the switch mechanism is opened; a stop block is formed in the middle part of the ejector rod, and an annular support plate is formed in the middle part of the second pipe body; and a second solenoid spring is arranged around the ejector rod and supported between the stop block and the support plate.

[0016] Preferably, a sealing ring is arranged between the second through hole and the ejector rod.

[0017] Preferably, an operating ring is formed at the second end of the ejector rod.

[0018] By using the detachable interventricular foramen occluder, the plug member is inserted into the interventricular foramen through the main channel of the ventriculoscope by the taking and placing member, and after the balloon is inflated to occlude the interventricular foramen, the taking and placing member is removed, and only the plug member is left in the interventricular foramen, so that the interventricular foramen is occluded without occupying the main channel and the side channel of the ventriculoscope during the operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective structural schematic diagram of the detachable interventricular foramen occluder.

[0020] Figure 2 It is a front structural schematic diagram of the detachable interventricular foramen occluder.

[0021] Figure 3 is a top view schematic diagram of the split septal hole occluder of the present application;

[0022] Figure 4 is a sectional view along line A-A of the split septal hole occluder of Figure 3

[0023] Figure 5 is a perspective view schematic diagram of the plug member of the split septal hole occluder of the present application;

[0024] Figure 6 is a top view schematic diagram of the plug member of the split septal hole occluder of the present application;

[0025] Figure 7 is a sectional view along line C-C of the plug member of the split septal hole occluder of the present application;

[0026] Figure 8 is a perspective view schematic diagram of the taking and placing member of the split septal hole occluder of the present application;

[0027] Figure 9 is a front view schematic diagram of the taking and placing member of the split septal hole occluder of the present application;

[0028] Figure 10 is a top view schematic diagram of the taking and placing member of the split septal hole occluder of the present application;

[0029] Figure 11 is a sectional view along line B-B of the taking and placing member of the split septal hole occluder of the present application;

[0030] Figure 12 is a connection schematic diagram of the annular capsule of the taking and placing member of the split septal hole occluder of the present application and the annular balloon pipeline. DETAILED DESCRIPTION

[0031] Hereinafter, the split septal hole occluder of the present application will be described in detail in conjunction with the accompanying drawings.

[0032] The split septal hole occluder of the present application comprises a plug member 10 and a taking and placing member 20.

[0033] ​The plug member 10 is mainly used for plugging the inter-chamber hole. The plug member 10 comprises a first tube body 11, a balloon 16, the balloon 16 is arranged on the outer periphery of the first tube body 11, the second end of the first tube body 11 is formed with a flared interface 12, a switch mechanism is arranged in the first tube body 11, the switch mechanism is used for controlling the opening and closing of the first tube body 11 and the flared interface 12, the inside of the first tube body 11 is communicated with the inside of the balloon 16, and the balloon 16 is used for clamping in the inter-chamber hole after inflation to plug the inter-chamber hole.

[0034] The balloon 16 can be formed as an oblong balloon, preferably as a gourd-shaped balloon, so as to conveniently clamp the inter-chamber hole in the middle concave position.

[0035] The taking and placing member 20 is used for placing the plug member 10 into the inter-chamber hole or taking the plug member 10 out of the inter-chamber hole. Another function of the taking and placing member 20 is to charge and discharge gas or liquid for the balloon 16 of the plug member 10.

[0036] The taking and placing member 20 comprises a second tube body 21, the first end of the second tube body 21 is formed as a tapered head end 22 corresponding to the flared interface 12, and is used for being inserted into the flared interface 12 and combined with the flared interface 12.

[0037] The second tube body 21 is formed with a balloon pipeline 26 on one side thereof, the balloon pipeline 26 is communicated with the inside of the second tube body 21, when the switch mechanism is in the open state, the balloon pipeline 26, the second tube body 21 and the balloon 16 are in the communication state, so as to charge and discharge gas or liquid.

[0038] The inner periphery of the flared interface 12 is formed with a circle of circular-arc-shaped grooves 12a.

[0039] The outer periphery of the tapered head end 22 is formed with a circle of annular capsules 23, the annular capsules 23 are used for being embedded in the grooves 12a, and when the annular capsules 23 are in the filled state, the tapered head end 22 is fixedly combined in the flared interface 12, and the flared interface 12 and the tapered head 22 are in the sealed state, so as to complete the functions of connection and sealing.

[0040] The annular capsules 23 are charged and discharged with gas or liquid through an annular balloon pipeline 25, the annular balloon pipeline 25 is arranged in the second tube body 21, the second end of the annular balloon pipeline 25 extends to the outside from the side of the second tube body 21, so as to facilitate the charging and discharging operation of gas or liquid.

[0041] The switch mechanism comprises a back baffle 15, a first solenoid spring 14, a conical sealing plug 13 and a front baffle ring 11b.

[0042] A rear baffle 15 is fixedly formed in the middle of the first tube body 11, and a first through hole is formed in the middle of the rear baffle 15; a front baffle 11b is fixedly formed in the second end of the first tube body 11; the inner circumferential surface of the front baffle 11b corresponds to the outer circumferential surface of the conical sealing plug 13; the first coil spring 14 is supported between the rear baffle 15 and the conical sealing plug 13.

[0043] The first tube body 11 is formed with a side hole 11a, through which the first tube body 11 communicates with the inside of the balloon 16. The side hole has the advantage of ensuring that the first end of the first tube body is combined with the inside of the balloon, so that the balloon is fixedly and firmly secured to the first tube body in the axial direction of the first tube body, facilitating the insertion of the balloon into the interventricular foramen. If the first end of the first tube body and the inside of the balloon are separated due to the need to leave an opening for the outflow of gas or liquid, the first tube body and the balloon are in a separated state, and the balloon is easy to be skewed when inserted into the interventricular foramen, increasing the difficulty of operation.

[0044] The second end of the second tube body 21 is provided with an end cap 27; a second through hole is formed in the middle of the end cap 27, through which the first end of the top rod 24 enters the second tube body 21 and extends along the length direction of the second tube body 21, and the conical head 24 is exposed; the first end of the top rod 24 is used to push the conical sealing plug 13 in the front baffle 11b, so that the switch mechanism is opened. The middle of the top rod 24 is formed with a stop block 24a, and the middle of the second tube body 21 is formed with an annular support plate 21a; the second coil spring 29 is arranged around the top rod 24 and supported between the stop block 24a and the support plate 21a.

[0045] A sealing ring 27a is arranged between the second through hole and the top rod.

[0046] The second end of the top rod 24 is formed with an operating ring or operating handle 28, so as to facilitate the operation of the top rod 24 to open the switch mechanism.

[0047] In use, first, the plug member and the taking and placing member are combined together as shown in Figure 4 At this time, the annular balloon is in a filled state, so that the conical head is connected with the trumpet-shaped interface and sealed. The second coil spring pushes the stop block, so that the top rod is pushed out in the direction of the plug member. The first end of the top rod abuts against the conical sealing plug, so that the first coil spring is compressed, and the switch mechanism is opened.

[0048] At this time, the balloon is not filled with gas or liquid and is in a contracted state; the second end of the taking and placing member is operated, and the entire device is inserted into the main channel of the ventricle mirror, and after being aligned with the interventricular foramen, the balloon is inserted into the interventricular foramen; then the balloon is inflated by using the balloon pipeline, so that the balloon is expanded and clamped in the interventricular foramen, and the interventricular foramen is blocked.

[0049] Through the annular balloon pipeline, the annular balloon is pumped, so that the inflated annular balloon is retracted and reduced, the first solenoid spring compresses the conical sealing plug into the front retaining ring, and the switch mechanism is in the closed state again. The gas in the balloon cannot flow out of it, keeping the balloon in an inflated state. After the annular balloon is retracted, the conical head end is detached from the trumpet-shaped interface, and the taking and placing member can be completely extracted from the pipeline. Only the plug member is retained in the interventricular foramen.

[0050] After the operation is completed and the operation area is cleaned, the taking and placing member is reinserted into the main channel. First, the pull ring is retracted to retract the plunger, so that the second spring is in a compressed state. The conical head end is inserted into the trumpet mouth, and the annular balloon pipeline is used to make the annular balloon return to an inflated state, completing the connection and sealing of the conical head end and the trumpet-shaped interface. The pull ring is released, so that the plunger extends in the direction of the plug member under the action of the second spiral spring. The first end of the plunger pushes the conical plug out of the front retaining ring. The conical plug compresses the first solenoid spring, and the switch mechanism is opened. The balloon is returned to a retracted state through the balloon pipeline, and the interventricular foramen is released from the grip of the balloon. Then, the entire device is retracted, and the entire device is extracted from the main channel of the ventriculoscope.

[0051] Unless otherwise defined, all technical and / or scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which the application pertains. The materials, methods, and examples mentioned in this application are only illustrative, not limiting.

[0052] Although the application has been described in conjunction with specific embodiments thereof, it is to be understood that the application is not limited to the specific embodiments thereof, and that changes and modifications can be made by those skilled in the art without departing from the scope of the application.

Claims

1. A split-type foramen occluder, which is placed into the foramen ventriculoperitoneum via the main channel of a ventriculoscope to seal the foramen ventriculoperitoneum, thereby preventing foreign bodies or fragmented cells generated during the operation from flowing into the downstream third and fourth ventricles, comprising: End cap components, pick-and-place components; The plug component includes a first tube body and a balloon; The balloon is formed in the shape of a gourd, surrounding the first tube and forming on the outer periphery of the first tube; the first end of the first tube is joined to the interior of the balloon; the second end of the first tube forms a funnel-shaped interface; a switching mechanism is formed inside the first tube to control the connection between the interior of the first tube and the funnel-shaped interface; the first tube has a side hole through which it communicates with the interior of the balloon; the balloon is used to hold itself in the interventricular orifice after inflation, thus sealing the interventricular orifice; The insertion / removal component is used to insert the plug component into the intercompartment orifice or to remove the plug component from the intercompartment orifice, and to inflate or deflate the balloon of the plug component with gas or liquid. The insertion / removal component includes a second tube body. The first end of the second tube body is formed into a tapered end corresponding to the flared interface, for insertion into and connection with the flared interface. A balloon tube is formed on one side of the second tube body. The balloon tube is connected to the interior of the second tube body. When the switching mechanism is in the open state, the balloon tube, the second tube body, and the balloon are in a connected state to inflate or deflate with gas or liquid. A groove with a circular cross-section is formed around the inner periphery of the horn-shaped interface; A ring-shaped bladder is formed on the outer periphery of the conical head end; the ring-shaped bladder is used to be embedded in the groove, and when the ring-shaped bladder is in a full state, the conical head end is fixedly connected to the horn-shaped interface, and the horn-shaped interface and the conical head end are in a sealed state. The annular capsule is filled and released with gas or liquid through an annular balloon tube. An annular balloon catheter is arranged inside the second tube, and the second end of the annular balloon catheter extends from the side of the second tube to the outside. The switching mechanism includes: a rear baffle, a first helical spring, a frustum-shaped sealing plug, and a front retaining ring; A rear baffle is fixedly formed in the middle of the first tube body, and a first through hole is formed in the middle of the rear baffle; a front retaining ring is fixedly formed at the second end of the first tube body; the inner circumferential surface of the front retaining ring corresponds to the outer circumferential surface of the frustum-shaped sealing plug; a first helical spring is supported between the rear baffle and the frustum-shaped sealing plug. An end cap is installed at the second end of the second tube; a second through hole is formed in the middle of the end cap, and the first end of the push rod enters the second tube through the second through hole, extends along the length of the second tube, and protrudes from the tapered head end; the first end of the push rod is used to push the frustum-shaped sealing plug in the front retaining ring, thereby opening the switching mechanism; a stop is formed in the middle of the push rod, and an annular support plate is formed in the middle of the second tube; a second helical spring is arranged around the push rod and supported between the stop and the support plate.

2. The split-type intercomlet plugging device according to claim 1, characterized in that: A sealing ring is provided between the second through hole and the push rod.

3. The split-type intercom hole plugger according to claim 1, characterized in that: An operating ring is formed at the second end of the push rod.

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