Blood vessel plugging device

Abstract

The utility model relates to the field of medical instruments, in particular to a blood vessel plugging device which comprises a plugging disc, an anchoring connecting piece and a filling unit, the filling unit has deformability, the anchoring connecting piece comprises a first connecting piece and a second connecting piece which are arranged from the far end to the near end, and the far end of the first connecting piece is connected with the plugging disc; the filling unit is arranged outside the first connecting piece in a sleeving mode during preassembling, the filling device further comprises a pushing pipe and a middle pipe, the filling unit is arranged in the far-end direction of the pushing pipe, and the middle pipe wraps the filling unit.

Description

Technical Field

[0001] The utility model relates to the technical field of blood vessel repair, in particular to a blood vessel blocking device. Background Art

[0002] Interventional therapy has become the focus of cardiovascular disease treatment in recent years due to its minimally invasive nature and safety. However, during minimally invasive surgery, a sheath must first be inserted through the epidermis into the femoral artery or radial artery, and then a guidewire and the required interventional devices are inserted through the sheath. After the operation, the damaged artery must be occluded to ensure the patient's postoperative recovery.

[0003] Currently, arterial compression is commonly used in clinical practice to block bleeding sites during interventional treatment. This involves first pressing the bleeding site with a finger for more than 10 minutes to temporarily stop the bleeding. Next, a bandage or a sandbag of a certain weight is applied to the bleeding site. This process requires the patient to remain immobile for 8-12 hours. This method takes a long time, and the compressed area cannot automatically decompress, which usually causes great pain and inconvenience to the patient.

[0004] Common treatments for patent foramen ovale include implanting a double-disc structure or suturing the patent channel. However, since a large piece of non-decomposable device will remain in the heart after the occlusion disc is implanted, it is not conducive to the patient's recovery and will affect other surgical treatments. Therefore, suturing is often recommended clinically.

[0005] Patent 202420184022.7 discloses a vascular occluder, comprising: an extravascular occluding member, the extravascular occluding member including a filling body; a fixing rod, one end of which is provided with a connector, the fixing rod passing through the filling body; and an occluding disc, the occluding disc being elastically deformable, the occluding disc being connected to the other end of the fixing rod or to the extravascular occluding member, and a space suitable for accommodating the blood vessel wall between the occluding disc and the extravascular occluding member; the design defects of this scheme are: first, the operation is complicated, there are many surgical steps, and a fisherman's knot must be formed; second, two discs, an anchoring disc and an occluding disc, are required, which increases the metal implant on the inner wall of the blood vessel, affects blood flow, and increases the difficulty of the process.

[0006] In summary, the existing technology has the following problems that need to be solved urgently: how to block the bleeding hole in a simple manner; how to better fit the blood vessel wall and minimize irritation to the tissue. Utility Model Content

[0007] This application is proposed in view of the above and other more concepts.

[0008] One of the purposes of the present application is to overcome the deficiencies of the prior art and to provide a blood vessel occlusion device to address the problems in the prior art where the occlusion devices cannot simultaneously ensure simple and convenient operation and contain a large number of metal implants.

[0009] The purpose of this utility model is achieved through the following solutions:

[0010] A vascular occlusion device comprises: an occlusion disk, an anchoring connector and a filling unit, wherein the filling unit is deformable, the anchoring connector comprises a first connector and a second connector arranged from the distal end toward the proximal end, the distal end of the first connector is connected to the occlusion disk, and the filling unit is sleeved outside the first connector when pre-installed, and further comprises a push tube and an intermediate tube, the filling unit is arranged in the distal direction of the push tube, and the intermediate tube wraps the filling unit.

[0011] The purpose of the utility model can be further achieved by the following technical solutions:

[0012] In one embodiment, the filling unit is deformed and squeezed to the outer surface of the blood vessel wall after receiving the axial thrust of the pushing tube, and the filling unit cooperates with the occluding disk to limit the opening between the two.

[0013] In one embodiment, the filling unit partially enters the outlet.

[0014] In one embodiment, the filling unit is a film material, flocculent material, colloid, polymer material or shape memory alloy.

[0015] In one embodiment, the filling unit is pushed out by the push tube, the filling unit detaches from the intermediate tube, and continues to push the push tube, the filling unit is deformed and stacked on the surface of the blood vessel wall; and, the anchoring connector is tightened during the process of pushing the push tube.

[0016] In one embodiment, the two actions of pulling the anchoring connector and pushing the push tube ensure that the occluding disk is subjected to balanced forces.

[0017] In one embodiment, an outer tube is further included, and the occluding disk is at least partially pre-installed in the outer tube. The outer tube constrains the shape of the occluding disk, and the push tube, the intermediate tube, and the outer tube are arranged in sequence from the inside to the outside.

[0018] In one embodiment, the outer tube enters the blood vessel, the outer tube is retracted to release the occluding disk and the vicinity of the inner wall of the blood vessel, the anchoring connector is kept pulled, the middle tube is retracted to release the filling unit, the push tube is pushed to squeeze the filling unit, the blood vessel wall is squeezed between the occluding disk and the filling unit, the bleeding port is blocked, the push tube is recovered, and finally the second connector is cut off.

[0019] In one embodiment, the occluding disk is disk-shaped or bowl-shaped in its natural state; and the occluding disk includes a main frame, a flexible member and a covering film, the main frame includes a plurality of supporting members, and one end of the flexible member is connected to the supporting member.

[0020] In one embodiment, the side shape of the occluding disk changes from an arc shape to a plane shape when pulled by the anchoring connector.

[0021] In one embodiment, the density of the main skeleton gradually decreases from the center to the periphery, and the flexibility of the periphery of the main skeleton is better than that of the center; and the occlusion disk deforms as the push tube moves toward the distal end.

[0022] In one embodiment, a plurality of anchors are provided on the second connecting member, and the anchors are barbs or knots.

[0023] In one embodiment, the anchors are arranged non-uniformly on the second connector, with the number of anchors located at the distal end being greater than the number of anchors located at the proximal end.

[0024] In one embodiment, the barb is oriented toward the distal end, and the barb forms a certain angle with the central axis of the anchor connector, with the angle ranging from 15° to 60°.

[0025] In one embodiment, the anchoring connector passes through the filling unit, and the filling unit moves or slides relative to the first connector.

[0026] In one embodiment, the length of the first connecting member is smaller than that of the second connecting member; and the first connecting member is smoother than the second connecting member.

[0027] In one embodiment, the vascular occlusion device is used to occlude a vascular puncture or a vascular wound.

[0028] In one embodiment, the length of the outer tube is greater than that of the middle tube, and the length of the middle tube is greater than that of the push tube.

[0029] Compared with the prior art, the advantages of the technical solution of this application include at least the following:

[0030] Existing vascular occlusion devices are usually difficult to complete vascular closure in a short period of time due to the complex design of the occluder and cumbersome operating steps. Compared with manual pressing on the wound, the cost-effectiveness is not high. The present application solves the above problems. First, the present application provides an occluding disc and a filler, and connects the two with an anchoring connector. The structure is simple and there are no unnecessary steps during operation. The operation can be completed by only pulling and pushing each delivery tube. The simple steps make the closure operation time short and clinically significant. Secondly, the filling unit of the present application can be selected according to the patient's allergens. The pre-installation of the occluding disc and the pre-installation of the filling unit are very simple, which saves time for pre-operative preparation. Third, the present application has only one occluding disc, and the implant is less than in the existing technology, which has little impact on the patient's surgery.

[0031] Different from the existing technology, the filling unit of the present application can be made of membrane materials, flocs, colloids, polymer materials and other materials, which can not only clamp the bleeding outlet, but also partially enter the bleeding outlet, ensuring the sealing effect of the bleeding outlet.

[0032] Different from the existing technology, the occluder disc of the present application includes a main frame, a flexible part and a covering. Due to the setting of the flexible part, the occluder disc has a stronger wall gripping force and is not easily washed away by the blood flow. The density of the main frame gradually decreases from the center to the periphery. The flexibility of the peripheral position of the main frame is better than that of the central position, ensuring that the blood vessel wall will not be scratched. The supporting force in the middle position is also sufficient, which can effectively ensure the successful operation.

[0033] 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

[0034] 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:

[0035] Figure 1 This is a schematic diagram of the vascular occlusion device of the present invention completing the occlusion of a bleeding orifice.

[0036] Figure 2 It is a schematic diagram of the bottom surface layout of the sealing disk of the present invention.

[0037] Figure 3 It is a schematic diagram of the structure of the anchoring connector of the utility model and a schematic diagram of the setting direction of the anchoring object.

[0038] Figure 4 This is a schematic diagram of the pre-installed state of the blood vessel occlusion device of the present invention.

[0039] Figure 5 This is a schematic diagram of the process of preparing to push the push tube after the filling unit of the present invention is released.

[0040] The features indicated by the numbers in the accompanying drawings are as follows:

[0041] 1-sealing disc, 11-main frame, 12-flexible part, 13-membrane, 2-anchoring connector, 21-first connector, 22-second connector, 221-anchor, 3-filling unit, 4-push tube, 5-middle tube, 6-outer tube. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] The present application will be described in more detail below with reference to different embodiments and examples of several aspects of the application.

[0045] 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 1

[0046] like Figures 1 to 3 As shown, when the present invention is used for blood vessel closure, a blood vessel occlusion device according to an embodiment of the present application is illustrated, including: an occlusion disk 1, an anchoring connector 2 and a filling unit 3, the filling unit 3 is deformable, the anchoring connector 2 includes a first connector 21 and a second connector 22 arranged from the distal end toward the proximal end, the distal end of the first connector 21 is connected to the occlusion disk 1, the filling unit 3 is sleeved on the outside of the first connector 21 when pre-installed, and further includes a push tube 4 and an intermediate tube 5, the filling unit 3 is arranged in the distal direction of the push tube 4, and the intermediate tube 5 wraps the filling unit 3.

[0047] The purpose of the utility model can be further achieved by the following technical solutions:

[0048] In the first embodiment, the filling unit 3 is deformed and squeezed to the outer surface of the blood vessel wall after being subjected to the axial thrust of the pushing tube 4. Figure 5 and Figure 1As shown, the filling unit 3 cooperates with the sealing disk 1 to limit the opening between the two.

[0049] In the first embodiment, the filling unit 3 partially enters the outlet.

[0050] In the first embodiment, the filling unit 3 is a film material, flocculent matter, colloid, polymer material or shape memory alloy.

[0051] In the first embodiment, the filling unit 3 is pushed out by the pushing tube 4, the filling unit 3 detaches from the intermediate tube 5, and continues to push the pushing tube 4, the filling unit 3 is deformed and stacked on the surface of the blood vessel wall; and, in the process of pushing the pushing tube 4, the anchoring connector 2 is tightly pulled.

[0052] In the first embodiment, the two actions of pulling the anchor connector 2 and pushing the push tube 4 ensure that the sealing disk 1 is subjected to balanced forces.

[0053] In the first embodiment, an outer tube 6 is further included, and the blocking disc 1 is at least partially pre-installed in the outer tube 6. The outer tube 6 constrains the shape of the blocking disc 1, and the push tube 4, the intermediate tube 5, and the outer tube 6 are sequentially arranged from the inside to the outside. Figure 4 shown.

[0054] In the first embodiment, the outer tube 6 enters the blood vessel, and the outer tube 6 is retracted to release the occluding disk 1 and the vicinity of the inner wall of the blood vessel, while the anchoring connector 2 is kept pulled, the middle tube is retracted to release the filling unit 3, and the pushing tube 4 is pushed to squeeze the filling unit 3. The blood vessel wall is squeezed between the occluding disk 1 and the filling unit 3, the bleeding port is blocked, the pushing tube 4 is recovered, and finally the second connector 22 is cut off.

[0055] In the first embodiment, the occluding disk 1 is in a disk or bowl shape in its natural state; and the occluding disk 1 includes a main frame 11, a flexible member 12 and a coating 13, as shown in FIG. Figure 2 As shown, the main frame 11 includes a plurality of support members, and one end of the flexible member 12 is connected to the support member.

[0056] In the first embodiment, the side shape of the occluding disk 1 changes from an arc to a plane under the pulling of the anchoring connector 2 .

[0057] In the first embodiment, the density of the main skeleton 11 gradually decreases from the center to the periphery, and the flexibility of the periphery of the main skeleton 11 is better than that of the center; and the occluding disk 1 will deform as the pushing tube 4 moves toward the distal end.

[0058] In the first embodiment, a plurality of anchors 221 are provided on the second connecting member 22 , and the anchors 221 are barbs or knots.

[0059] In the first embodiment, the anchors 221 are arranged non-uniformly on the second connector 22 , and the number of the anchors 221 at the distal end is greater than the number of the anchors 221 at the proximal end.

[0060] In the first embodiment, the barb is oriented toward the distal end, and the barb forms a certain angle with the central axis of the anchor connector 2, the angle range being 15° to 60°. Figure 3 shown.

[0061] In the first embodiment, the anchoring connector 2 passes through the filling unit 3 , and the filling unit 3 moves or slides relative to the first connector 21 .

[0062] In the first embodiment, the length of the first connecting member 21 is shorter than that of the second connecting member 22 ; and the smoothness of the first connecting member 21 is better than that of the second connecting member 22 .

[0063] In the first embodiment, the blood vessel occlusion device is used to occlude a blood vessel puncture or a blood vessel wound.

[0064] In the first embodiment, the length of the outer tube is greater than that of the middle tube 5 , and the length of the middle tube 5 is greater than that of the push tube 4 .

[0065] The exemplary operation process of inserting the closure device of the first embodiment is as follows:

[0066] (1) Establish an access channel and then deliver the delivery system to the bleeding site along the channel;

[0067] (2) withdrawing the outer tube 6 to release the blocking disk 1;

[0068] (3) Tighten the proximal end of the anchoring connector 2, withdraw the intermediate tube 5, and release the filling unit 3;

[0069] (4) Keep the anchor connector 2 tight, push the push tube 4 toward the distal end, and stack the filling units 3 onto the surface of the blood vessel wall;

[0070] (5) Recover the push tube 4 and cut off the second connecting line.

[0071] 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, configurations, and / or steps disclosed, and it is apparent that many modifications and variations are possible in light of the above teachings. It is intended that the scope of the invention and all equivalents thereof be defined by the appended claims.

Claims

1. A blood vessel occlusion device, characterized in that: include: An occluding disk, an anchoring connector and a filling unit, wherein the filling unit is deformable, the anchoring connector includes a first connector and a second connector arranged from the distal end toward the proximal end, the distal end of the first connector is connected to the occluding disk, and the filling unit is sleeved outside the first connector when pre-installed, and further includes a push tube and an intermediate tube, the filling unit is arranged in the distal direction of the push tube, and the intermediate tube wraps the filling unit.

2. The vascular occlusion device according to claim 1, characterized in that: The filling unit is deformed and squeezed onto the surface of the blood vessel wall after receiving the axial thrust of the pushing tube. The filling unit cooperates with the occluding disk to limit the bleeding outlet between the two. In addition, the filling unit is a membrane material, flocculent material, colloid, polymer material or shape memory alloy.

3. The vascular occlusion device according to claim 1, characterized in that: The filling unit is pushed out by the pushing tube, and the filling unit detaches from the middle tube, and continues to push the pushing tube, so that the filling unit is deformed and stacked on the surface of the blood vessel wall; and the anchoring connector is tightly pulled during the process of pushing the pushing tube.

4. The vascular occlusion device according to claim 1, characterized in that: It also includes an outer tube, in which the blocking disk is at least partially pre-installed. The outer tube constrains the shape of the blocking disk, and the push tube, the intermediate tube, and the outer tube are arranged in sequence from the inside to the outside.

5. The vascular occlusion device according to claim 1, characterized in that: The occluding disk is disk-shaped or bowl-shaped in its natural state; and the occluding disk comprises a main frame, a flexible member and a covering film. The main frame comprises a plurality of supporting members, and one end of the flexible member is connected to the supporting member.

6. The blood vessel occlusion device according to claim 5, characterized in that: The density of the main skeleton gradually decreases from the center to the periphery, and the flexibility of the periphery of the main skeleton is better than that of the center; and the occlusion disk will deform as the push tube moves toward the distal end.

7. The vascular occlusion device according to claim 1, characterized in that: A plurality of anchors are provided on the second connecting member, and the anchors are barbs or knots.

8. The blood vessel occlusion device according to claim 7, characterized in that: The barb is oriented toward the distal end, and the barb forms a certain angle with the central axis of the anchor connector, with the angle ranging from 15° to 60°.

9. The blood vessel occlusion device according to claim 1, characterized in that: The anchoring connector passes through the filling unit, and the filling unit moves or slides relative to the first connector.

10. The blood vessel occlusion device according to claim 1, characterized in that: The length of the first connecting member is smaller than that of the second connecting member; and the smoothness of the first connecting member is better than that of the second connecting member.

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