Blood vessel plugging system

Abstract

The utility model relates to the field of medical instruments, in particular to a blood vessel plugging system which comprises a plugging part, an anchoring line connected with the plugging part, a filling unit connected with the anchoring line and a locking unit, the locking unit comprises a cylindrical part and a plurality of limiting parts, a one-way channel is formed in the cylindrical part, the limiting parts are located at the far end of the cylindrical part, and the limiting parts are located at the far end of the cylindrical part. The limiting pieces are diverged towards the outer circumference in an arc shape; moreover, the anchoring line moves relative to the locking unit to hoop the filling unit between the locking unit and the blood vessel wall, and the free end of the limiting piece is attached to the filling unit or enters the filling unit.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a blood vessel occlusion system. Background Art

[0002] Interventional therapies, with their minimally invasive and safe nature, have become a key focus in the development of cardiovascular disease treatment in recent years. Various surgical procedures are routinely performed within blood vessels or cavities. For example, in the treatment of vascular diseases such as arteriosclerosis, it is common practice to invasively access an artery and insert a device (e.g., a balloon or other type of catheter) to perform the procedure within the artery. This procedure typically involves percutaneous puncture of the artery, allowing an insertion sheath to be placed within the artery. The device (e.g., a catheter) can then be passed through the sheath and into the surgical site within the artery. Intravascular and endoluminal procedures inevitably present the challenge of stopping bleeding at the percutaneous puncture site after the procedure is completed and the device (and any insertion sheath used with it) is removed.

[0003] In response to the problem of bleeding after removal, patent US13586777 discloses a bioabsorbable anchor for use in a living body, the anchor comprising: an inner anchor comprising a first bioabsorbable material, the inner anchor comprising a top surface, a side surface and an end portion; and an outer anchor comprising an overmolding material, the overmolding material comprising a second bioabsorbable material; wherein a first portion of the top surface of the inner anchor and at least a portion of the side surface of the inner anchor are surrounded by the overmolding material of the outer anchor; wherein a second portion of the top surface of the inner anchor and the end portion of the inner anchor are not surrounded by the overmolding material of the outer anchor; the design defects of this solution are: first, the sealing plug is compacted by pushing the compression tube, but the sealing plug is a compressible material and is flexible. After the tube is withdrawn, the sealing plug will expand freely, and there is a risk of axial movement.

[0004] There is a risk of deviation from the target position or sealing failure and further bleeding; secondly, there are two sutures on the inner anchor, and the sealing plug needs to pass through the two sutures. It is more difficult for the sealing plug to maintain its original shape when it expands and displaces. The closed anchor is not stable after implantation.

[0005] In summary, the prior art has the following problem that urgently needs to be solved: how to ensure that the sealing plug expands radially and stabilizes at a target position to ensure a sealing effect. Utility Model Content

[0006] This application is proposed in view of the above and other more concepts.

[0007] One of the purposes of the present application is to overcome the deficiencies of the prior art and to provide a blood vessel occlusion system to address the problem that the occlusion device in the prior art cannot ensure that the occlusion unit is stably located at the bleeding site.

[0008] The purpose of this utility model is achieved through the following solutions:

[0009] A blood vessel occlusion system comprises: an occluding member, an anchoring line connected to the occluding member, a filling unit connected to the anchoring line, and a locking unit, wherein the locking unit comprises a cylindrical member and a plurality of limiting members, a one-way channel is provided inside the cylindrical member, the limiting member is located at the distal end of the cylindrical member, and the limiting member diverges toward the periphery in an arc shape; and the anchoring line moves relative to the locking unit to clamp the filling unit between the locking unit and the blood vessel wall, and the free end of the limiting member is in contact with the filling unit or enters into the filling unit.

[0010] The purpose of the utility model can be further achieved by the following technical solutions:

[0011] In one embodiment, the blocking member includes a fitting body and a table-shaped member disposed on the fitting body; and the table-shaped member has an arc surface, and at least a portion of the table-shaped member fits with or is stuck in the bleeding port.

[0012] In one embodiment, the fitting body is in the shape of an elongated strip.

[0013] In one embodiment, the blocking member is provided with a first through hole at the center of the table-shaped member, and two second through holes are provided at the junction of the table-shaped member and the fitting body, and the anchoring line passes through the second through holes and the first through holes.

[0014] In one embodiment, two anchoring lines are included, and the anchoring lines pass through the first through hole, the second through hole, the first through hole, and another second through hole respectively. The anchoring lines form four strands above the table-shaped member, and the four strands are twisted together to form one strand.

[0015] In one embodiment, the fitting body is made of a degradable material; and both ends and the bottom of the fitting body are provided with a streamlined structure.

[0016] In one embodiment, the fitting body is made of a biodegradable material, lactide-glycolide polymer, and is formed by an injection molding process.

[0017] In one embodiment, the table-shaped member is used to position the fitting body at the bleeding hole, and the table-shaped member enters the bleeding hole to block the bleeding hole.

[0018] In one embodiment, the upper side of the fitting body contacts the blood vessel wall and adopts a planar structure. The side edges are designed to be arc-shaped. The streamlined structure reduces resistance to blood and avoids affecting blood flow.

[0019] In one embodiment, the anchoring line includes a first connecting line and a second connecting line, the first connecting line is arranged at the distal end of the second connecting line, the surface of the first connecting line is smooth, and the surface of the second connecting line is provided with a one-way fitting.

[0020] In one embodiment, a delivery device is further included, which includes a loader, an outer tube and an inner tube; the locking unit is preinstalled in the outer tube, and the cylindrical member is arranged at the distal end of the inner tube and fits with the distal end of the inner tube.

[0021] In one embodiment, the limiting member is a fixing claw having shape memory, the fixing claw is pre-installed in the outer tube, and the fixing claw automatically opens after being released.

[0022] In one embodiment, the locking unit includes four fixing claws, and the fixing claws are made of degradable material.

[0023] In one embodiment, a locking structure is provided on the outer tube, and the outer surface of the blocking member cooperates with the locking structure; and when the outer tube is pushed, the blocking member moves toward the distal end in the gap between the loader and the locking structure to enter the target position.

[0024] In one embodiment, the one-way fitting is a barb, and the barb faces toward the distal end.

[0025] In one embodiment, the one-way channel forms a self-locking relationship with the one-way fitting.

[0026] In one embodiment, the cylindrical member is sleeved outside the anchoring line, and the cylindrical member includes a through hole; the one-way channel includes at least one step toward the proximal direction, and the one-way channel restricts the one-way fitting member to move only toward the proximal end.

[0027] In one embodiment, the filling units are in the form of flocs, sheets or strips, and the anchoring lines cross through the filling units.

[0028] In one embodiment, the filling unit automatically absorbs water after entering the skin.

[0029] In one embodiment, the first connecting line crosses through the filling unit.

[0030] In one embodiment, the step is oriented obliquely upward.

[0031] In one embodiment, the one-way fitting is a knot.

[0032] Compared with the prior art, the advantages of the technical solution of this application include at least the following:

[0033] The existing vascular occlusion devices have a filling unit that will expand by itself after being pushed and generally expand along the shape of the wound, resulting in axial expansion, which will leave a gap between the filling unit and the bleeding port, thereby causing bleeding symptoms. The present application solves the above problems. First, the present application provides a sealing member, an anchoring line, a filling unit and a locking unit. The locking unit is provided at the proximal end of the filling unit. By pulling the anchoring line and pushing the locking unit, the filling unit will be compressed between the locking unit and the blood vessel wall. This operation not only prevents the filling unit from deforming arbitrarily and causing bleeding, but also seals the bleeding port more firmly. On the other hand, there is no need to add pipes in the design of the delivery tube. Pushing the locking unit only requires pushing the inner tube connected to it. Although the implant device has added a locking unit, the surgical steps have not been increased. While enhancing the occlusion, the operation time of medical workers has not been increased, which has great clinical significance.

[0034] Different from the existing technology, the table-shaped part protrudes upward compared to the fitting main body. The "protrusion" design has three advantages. First, it is convenient to leave enough space for the first through hole and the second through hole in the process to facilitate the passage of the anchor line. Second, when the anchor line is pulled, the table-shaped part is automatically restricted at the bleeding outlet, which plays a positioning role. Third, the table-shaped part is arc-shaped, and can also play a certain blocking effect when entering the bleeding outlet. The structural design is ingenious and the use efficiency is high.

[0035] Different from the existing technology, the outer tube of the present application is also provided with a locking structure. The space between the locking structure and the device is used for the passage and entry of the blocking component into the blood vessel. This design not only does not increase the diameter and number of the conveying pipes, but also will not be affected when the outer tube is recovered.

[0036] Different from the existing technology, the limiting part is a fixed claw, which can meet the requirements of pre-installation and automatic release at the same time, and its free end is sharp, which can be inserted into the blocking unit, making the locking relationship between the blocking unit and the locking unit closer. Since the two are close, the anchoring line and the locking unit are also close, ensuring that the blocking part, anchoring line, filling unit, and locking unit will not have excessive relative movement after implantation, and the blocking effect is stable until the implant naturally degrades, with high safety.

[0037] The embodiments of the present application can achieve other advantageous technical effects that are not listed one by one. These other technical effects may be partially described below; and they can be anticipated and understood by those skilled in the art after reading this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above features and advantages of these embodiments and other features and advantages and the manner in which they are achieved will become more apparent and the embodiments of the present application can be better understood by referring to the following description in conjunction with the accompanying drawings, in which:

[0039] Figure 1 Schematic diagram of the overall structure of the vascular occlusion system of the present invention.

[0040] Figure 2 and Figure 3 It is a schematic diagram of the specific structure of the fitting body of the utility model.

[0041] Figure 4 This is a schematic structural diagram of the anchor line and the one-way matching piece of the utility model.

[0042] Figure 5 and Figure 6 This is a structural diagram of the locking unit of the utility model.

[0043] Figure 7 This is the layout diagram of the one-way channel of the utility model.

[0044] Figure 8 This is a schematic diagram of the table-shaped member of the present invention being stuck in a bleeding hole.

[0045] Figure 9 This is a schematic diagram of the implant device of the present invention entering a blood vessel through a loader.

[0046] The features indicated by the numbers in the accompanying drawings are as follows:

[0047] 1-sealing part, 11-fitting body, 12-table-shaped part, 13-first through hole, 14-second through hole, 2-anchoring line, 21-first connecting line, 22-second connecting line, 3-filling unit, 4-locking unit, 41-cylindrical part, 411-one-way channel, 42-limiting part, 5-one-way fitting part, 6-delivery device, 61-loader, 62-outer tube, 621-locking structure, 63-inner tube. DETAILED DESCRIPTION

[0048] In the following description of the drawings and specific embodiments, details of one or more embodiments of the present application will be described. Other features, purposes and advantages of the present application will be clear from these descriptions, drawings and claims.

[0049] It should be understood that the phrases and terms used herein are for descriptive purposes only and should not be considered restrictive. The use of "include," "comprise," or "have" and variations thereof herein is intended to encompass the items listed thereafter and their equivalents as well as additional items.

[0050] The present application will be described in more detail below with reference to different embodiments and examples of several aspects of the application.

[0051] In the present application, the term “proximal end” or “proximal side” refers to an end or side closer to a surgical operator, and “distal end” or “distal side” refers to an end or side farther from a surgical operator. Example

[0052] like Figure 1 As shown, the present invention is used for blood vessel closure, and a blood vessel occlusion system according to an embodiment of the present application is shown, comprising: an occluding member 1, an anchoring line 2 connected to the occluding member 1, a filling unit 3 connected to the anchoring line 2, and a locking unit 4, wherein the locking unit 4 comprises a cylindrical member 41 and a plurality of limiting members 42, wherein a one-way channel 411 is provided inside the cylindrical member 41, and the limiting member 42 is located at the distal end of the cylindrical member 41, and the limiting member 42 diverges toward the periphery in an arc shape, as shown in FIG. Figures 5-7 and, the anchoring line 2 moves relative to the locking unit 4 to clamp the filling unit 3 between the locking unit 4 and the blood vessel wall, and the free end of the limiting member 42 fits with the filling unit 3 or enters the filling unit 3.

[0053] The purpose of the utility model can be further achieved by the following technical solutions:

[0054] In the first embodiment, the blocking member 1 includes a fitting body 11 and a table-shaped member 12 provided on the fitting body 11; and the table-shaped member 12 is an arc surface, and the table-shaped member 12 is at least partially fitted with or stuck in the bleeding port, such as Figure 2 shown.

[0055] In the first embodiment, the fitting body 11 is in the shape of a long strip. Figure 3 shown.

[0056] In the first embodiment, the blocking member 1 is provided with a first through hole 13 at the center of the table-shaped member 12 , and two second through holes 14 are provided at the junction of the table-shaped member 12 and the fitting body 11 , and the anchor line 2 passes through the second through hole 14 and the first through hole 13 .

[0057] In the first embodiment, two anchoring lines 2 are included, and the anchoring lines 2 pass through the first through hole 13, the second through hole 14 and the first through hole 13 and the other second through hole 14 respectively. The anchoring lines 2 form four strands above the table-shaped member 12, and the four strands are twisted together to form one strand.

[0058] In the first embodiment, the fitting body 11 is made of a degradable material; and both ends and the bottom of the fitting body 11 are provided with a streamlined structure.

[0059] In the first embodiment, the fitting body 11 is made of a biodegradable material, lactide-glycolide polymer, and is formed by injection molding.

[0060] In the first embodiment, the platform-shaped member 12 is used to position the fitting body 11 at the bleeding hole, and the platform-shaped member 12 enters the bleeding hole to block the bleeding hole.

[0061] In the first embodiment, the upper side of the fitting body 11 contacts the blood vessel wall and adopts a planar structure with arc-shaped side edges. The streamlined structure reduces resistance to blood and avoids affecting blood flow.

[0062] In the first embodiment, the anchor line 2 includes a first connecting line 21 and a second connecting line 22. The first connecting line 21 is arranged at the distal end of the second connecting line 22. The surface of the first connecting line 21 is smooth, and the surface of the second connecting line 22 is provided with a one-way fitting 5. Figure 4 shown.

[0063] In the first embodiment, a conveying device 6 is further included. The conveying device 6 includes a loader 61, an outer tube 62 and an inner tube 63. Figure 9 The locking unit 4 is pre-installed in the outer tube 62, the cylindrical member 41 is provided at the distal end of the inner tube 63 and fits with the distal end of the inner tube 63, as shown Figure 8 shown.

[0064] In the first embodiment, the limiting member 42 is a fixed claw having shape memory. The fixed claw is pre-installed in the outer tube 62 and automatically opens after being released.

[0065] In the first embodiment, the locking unit 4 includes four fixing claws, and the fixing claws are made of degradable material.

[0066] In the first embodiment, a locking structure 621 is provided on the outer tube 62, and the outer surface of the blocking member 1 cooperates with the locking structure 621; and, by pushing the outer tube 62, the blocking member 1 moves toward the distal end in the gap between the loader 61 and the locking structure 621 to enter the target position.

[0067] In the first embodiment, the one-way fitting member 5 is a barb, and the barb is oriented toward the distal end.

[0068] In the first embodiment, the one-way channel 411 and the one-way fitting 5 form a self-locking relationship.

[0069] In the first embodiment, the cylindrical member 41 is sleeved outside the anchor line 2, and the cylindrical member 41 includes a through hole; the one-way channel 411 includes four steps 4111 facing the proximal direction, and the one-way channel 411 limits the one-way fitting member 5 to move only toward the proximal end.

[0070] In the first embodiment, the filling unit 3 is in a flocculent, sheet-like or strip-like shape, and the anchor line 2 crosses and passes through the filling unit 3 .

[0071] In the first embodiment, the step 4111 is oriented obliquely upward.

[0072] The exemplary operation process of inserting the closure device of the first embodiment is as follows:

[0073] (1) Establishing an access channel and performing surgery. After the surgery is completed, the loader 61 remains at the target location, and then the outer tube 62 is delivered along the device channel;

[0074] (2) Pushing the outer tube 62 to release the blocking member 1 into the blood vessel;

[0075] (3) Pull the anchor line 2 to clamp the table-shaped member 12 at the bleeding site, as shown in the following example: Figure 8 As shown;

[0076] (4) Keep the anchor line 2 tight, push the inner tube 63 toward the distal end, and the locking unit 4 squeezes the filling unit 3 until the inner tube 63 cannot be pushed;

[0077] (5) Recover the inner tube 63 and the outer tube 62 and cut the anchor line 2.

[0078] The foregoing description of several embodiments of the present application has been presented for illustrative purposes. It is not intended to be exhaustive or to limit the present application to the precise configurations, constructions, and / or steps disclosed. Obviously, many modifications and variations are possible in light of the above teachings. It is intended that the scope of the present invention and all equivalents thereof be defined by the appended claims.

Claims

1. A blood vessel occlusion system, characterized in that: include: A sealing member, an anchoring line connected to the sealing member, a filling unit connected to the anchoring line, and a locking unit, wherein the locking unit includes a cylindrical member and a plurality of limiting members, a one-way channel is provided inside the cylindrical member, the limiting member is located at the distal end of the cylindrical member, and the limiting member diverges toward the periphery in an arc shape; and the anchoring line moves relative to the locking unit to clamp the filling unit between the locking unit and the blood vessel wall, and the free end of the limiting member is in contact with the filling unit or enters into the filling unit.

2. The vascular occlusion system according to claim 1, characterized in that: The blocking member includes a fitting body and a table-shaped member arranged on the fitting body; and the table-shaped member is an arc surface, and at least a portion of the table-shaped member fits with or is stuck in the bleeding hole.

3. The vascular occlusion system according to claim 2, characterized in that: The blocking member is provided with a first through hole at the center of the table-shaped member, and two second through holes are provided at the junction of the table-shaped member and the fitting body, and the anchoring line passes through the second through holes and the first through holes.

4. The vascular occlusion system according to claim 1, characterized in that: The anchoring line includes a first connecting line and a second connecting line. The first connecting line is arranged at the distal end of the second connecting line. The surface of the first connecting line is smooth, and a one-way fitting is arranged on the surface of the second connecting line.

5. The vascular occlusion system according to claim 1, characterized in that: It also includes a delivery device, which includes a loader, an outer tube and an inner tube; the locking unit is pre-installed in the outer tube, and the cylindrical member is arranged at the distal end of the inner tube and fits with the distal end of the inner tube.

6. The blood vessel occlusion system according to claim 5, characterized in that: The limiting member is a fixing claw having shape memory. The fixing claw is pre-installed in the outer tube and automatically opens after the fixing claw is released.

7. The vascular occlusion system according to claim 5, characterized in that: The outer tube is provided with a locking structure, and the outer surface of the blocking member cooperates with the locking structure; and when the outer tube is pushed, the blocking member moves toward the distal end in the gap between the loader and the locking structure to enter the target position.

8. The blood vessel occlusion system according to claim 4, characterized in that: The one-way fitting is a barb, and the barb is directed toward the distal end.

9. The blood vessel occlusion system according to claim 4, characterized in that: The cylindrical member is sleeved outside the anchoring line, and the cylindrical member includes a through hole; the one-way channel includes at least one step toward the proximal direction, and the one-way channel restricts the one-way fitting member from moving only toward the proximal end.

10. The blood vessel occlusion system according to claim 1, characterized in that: The filling units are in the shape of flocs, sheets or strips, and the anchoring lines cross and pass through the filling units.

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