Vascular closure device

Abstract

The utility model discloses a blood vessel closing device which comprises a conveying assembly and a biological absorbable closing assembly. The conveying assembly comprises an operating rod, a closed needle tube, a blood vessel needle tube, a first inner tube and a branch tube, the first inner tube is slidably arranged in the closed needle tube, the closed needle tube and the blood vessel needle tube are both connected with the operating rod, a first sliding groove is formed in the operating rod, a first sliding block is arranged on the first sliding groove and connected with a first connecting rod, and the branch tube is connected with the first connecting rod. One end of the first connecting rod is connected with one end of the first inner tube, the branch tube is arranged on the closed needle tube, at least part of the structure of the end, away from the first sliding block, of the branch tube extends out relative to the closed needle tube, the closing assembly comprises a closing plug and an anchoring piece, and the closing plug is arranged on a tube cavity formed between the closed needle tube and the first inner tube. The hemostat is simple to operate and convenient to use, is used for quickly stopping bleeding after operation of some elderly patients, and has a relatively wide market prospect.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially relates to blood vessel closure device. BACKGROUND

[0002] Blood vessel closure device also belongs to one kind of medical instrument, and is commonly used for blocking blood flow during blood vessel anastomosis operation, and transfemoral artery puncture is one of common routes of blood vessel intervention diagnosis and treatment, and puncture point vascular complications during operation period are problems that each intervention physician has to face frequently. The puncture point hemostasis methods after transfemoral artery intervention include manual compression hemostasis method, mechanical compression hemostasis method and the like. The traditional manual compression method has been clinically applied for a long time, but long-time compression hemostasis and bed rest not only increase the labor of medical staff, but also increase the pain of patients, especially the elderly. The incidence of vascular complications is significantly higher than that of simple coronary angiography, so it is necessary to design blood vessel closure device for the above problems. SUMMARY

[0003] The utility model discloses blood vessel closure device, aiming at the structure and the lack of research improvement of prior art, provides blood vessel closure device to reach the purpose of better practical value.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] Blood vessel closure device, including conveying assembly and bioabsorbable closure assembly, the conveying assembly includes operating rod, closed needle tube, blood vessel needle tube, first inner tube and branch pipe, the first inner tube can be slidably arranged in the closed needle tube, the closed needle tube and the blood vessel needle tube are connected with the operating rod, the operating rod is provided with first sliding groove, the first sliding groove is provided with first sliding block, the first sliding block is connected with first connecting rod, one end of the first connecting rod is connected with one end of the first inner tube, the branch pipe is arranged on the closed needle tube and at least part of structure of the end away from the first sliding block is stretched out relative to the closed needle tube, the closure assembly includes closure plug and anchor, the closure plug is arranged on the lumen formed between the closed needle tube and the first inner tube, the first inner tube is provided with the compression assembly for compressing and fixing the closure plug, the anchor is compressed and accommodated in the branch pipe, the closed needle tube and the first inner tube in it can slide in the branch pipe to push out the anchor from the branch pipe and enter the blood vessel, the anchor can be automatically stretched in the blood vessel, and the anchor is connected with the closure plug and the first inner tube through absorbable elastic member.

[0006] In some embodiments, a protrusion is arranged on one end of the shunt tube close to the closure plug, a second sliding groove is arranged on the operating rod, a second sliding block is arranged on the second sliding groove, a second connecting rod is connected to the second sliding block, and one end of the second connecting rod is connected to the end of the closed needle tube away from the closure plug.

[0007] In some embodiments, a blocking mark is arranged on the first inner tube, and when the closed needle tube moves away from the closure plug relative to the first inner tube, the closed needle tube is aligned with the blocking mark.

[0008] In some embodiments, an anti-inflammatory cavity is arranged on the operating rod, the anti-inflammatory cavity is filled with anti-inflammatory water, the anti-inflammatory cavity is connected to the blood vessel needle tube through a transfusion tube, and a pressure control device is arranged on the anti-inflammatory cavity.

[0009] In some embodiments, the closure plug and the anchor are made of bioabsorbable material.

[0010] In some embodiments, the anchor comprises a stent and an anchor pad fixed to the distal end of the stent, and the anchor pad is automatically expanded and popped out relative to the stent after being pushed out of the shunt tube and entering the blood vessel.

[0011] In some embodiments, the compression assembly comprises a tube body and a compression sheet, the tube body is arranged in the first inner tube and connected to the absorbable elastic member, and the compression sheet is connected to the tube body.

[0012] In some embodiments, the material of the operating rod comprises titanium alloy material.

[0013] In some embodiments, scales are arranged on the first sliding groove and the second sliding groove, and the unit is mm.

[0014] The blood vessel closure device has the following advantages:

[0015] The blood vessel closing device is characterized in that: the blood vessel closing device comprises an arterial sheath, a blood vessel needle tube, a shunt tube, a closing needle tube, a first inner tube, an elastic absorbable member, a compression assembly, an anchor pad, a closing plug and an anchor piece; the closing needle tube is inserted into the blood vessel together with the blood vessel needle tube through the shunt tube inserted into the arterial sheath; the first inner tube is pushed synchronously with the closing needle tube through synchronous movement of the first slider and the second slider on the operating rod; the closing plug and the anchor piece are synchronously advanced in the first inner tube during the pushing process; the anchor pad is kept in a compressed state in front of the first inner tube and the closing needle tube and is synchronously advanced under the pushing force of the first inner tube and the closing needle tube until the end of the first inner tube contacts the shunt tube, so that the anchor piece enters the blood vessel through the shunt tube and the arterial sheath in sequence and is automatically stretched in the blood vessel; then, the arterial sheath and the blood vessel closing device are withdrawn as a whole, so that the stretched anchor piece is tightly attached to the blood vessel wall; then, the second slider is moved to withdraw the closing needle tube relative to the first inner tube, so that the closing plug is released outside the first inner tube and is inflated under the action of liquid; the elastic absorbable member is connected to the closing plug and the anchor piece, so that the area of the closing plug is constrained; then, the compression assembly is used to press the closing plug, so that the closing plug blocks the puncture port of the blood vessel to close the blood vessel and achieve the effect of rapid hemostasis; in addition, the blood vessel needle tube inputs the anti-inflammatory water in the anti-inflammatory cavity of the operating rod into the blood vessel of the patient to achieve the effect of sterilization and anti-inflammation, thereby preventing infection. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure diagram of the blood vessel closing device is shown in the utility model.

[0017] Figure 2 The structure diagram of the blood vessel closing device is shown in the utility model. Figure 1 The local enlarged view of A shown in the utility model.

[0018] Figure 3 The structure diagram of the closing assembly and the elastic absorbable member of the blood vessel closing device is shown in the utility model. Figure 1 The structure diagram of the closing assembly and the elastic absorbable member of the blood vessel closing device is shown in the utility model.

[0019] Figure 4 The local structure diagram of the anchor piece of the blood vessel closing device after stretching is shown in the utility model. Figure 1 The local structure diagram of the anchor piece of the blood vessel closing device after stretching is shown in the utility model.

[0020] Figure 5 The local structure diagram of the compression assembly of the blood vessel closing device during compression of the closing plug is shown in the utility model. Figure 1 The local structure diagram of the compression assembly of the blood vessel closing device during compression of the closing plug is shown in the utility model.

[0021] In the drawings: 1 - operating rod, anti-skid sleeve 101, 11 - first sliding groove, 12 - first sliding block, 13 - first connecting rod, 14 - second sliding groove, 16 - second sliding block, 17 - second connecting rod, 18 - anti-inflammatory cavity, 19 - anti-inflammatory water, 20 - infusion tube, 21 - pressure control device, 2 - closed needle tube, 3 - blood vessel needle tube, 4 - first inner tube, 41 - occlusion mark, 5 - shunt tube, 51 - protrusion, 6 - closure plug, 7 - anchor, 71 - anchor gasket, 72 - bracket, 81 - tube body, 82 - compression sheet, 9 - elastic absorbable member. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and indicated in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0023] Reference Figures 1 to 5 In a preferred embodiment, the blood vessel closure device comprises a delivery assembly and a bioabsorbable closure assembly; the delivery assembly comprises an operating rod 1, a closed needle tube 2, a blood vessel needle tube 3, a first inner tube 4 and a shunt tube 5, the first inner tube 4 is slidably arranged in the closed needle tube 2, the closed needle tube 2 and the blood vessel needle tube 3 are connected with the operating rod 1, the operating rod 1 is provided with a first sliding groove 11, the first sliding groove 11 is provided with a first sliding block 12, the first sliding block 12 is connected with a first connecting rod 13, one end of the first connecting rod 13 is connected with one end of the first inner tube 4, the shunt tube 5 is arranged on the closed needle tube 3 and at least part of the structure of the end away from the first sliding block 12 protrudes out of the closed needle tube 3, the closure assembly comprises a closure plug 6 and an anchor 7, the closure plug 6 is arranged on the lumen formed between the closed needle tube 2 and the first inner tube 4, and the first inner tube 4 is provided with a compression assembly for compressing and fixing the closure plug 6; the anchor 7 is compressed and accommodated in the shunt tube 5, the closed needle tube 2 and the first inner tube 4 in it are slidable in the shunt tube 5 to push the anchor 7 out of the shunt tube 5 and into the blood vessel, the anchor 7 can automatically expand in the blood vessel, and the anchor 7 connects the closure plug 6 and the first inner tube 4 through the elastic absorbable member 9. The shunt tube 5 can send the simple delivery structure composed of the first inner tube 4, the closed needle tube 2, the anchor 7 and the closure plug 6 into the femoral artery puncture sheath to be occluded. In some embodiments, the material of the operating rod 1 comprises titanium alloy material.

[0024] As Figure 2As shown in some embodiments, the shunt tube 5 is provided with a protrusion 51 near one end of the closing plug 6, the operating rod 1 is provided with a second sliding groove 14, the second sliding groove 14 is provided with a second sliding block 16, the second sliding block 16 is connected with a second connecting rod 17, one end of the second connecting rod 17 is connected with the closing needle tube 2 away from one end of the closing plug 6. In some embodiments, the first sliding groove 11 and the second sliding groove 14 are provided with scales, the unit is mm. By setting the scales, the first inner tube 4 and the closing needle tube 2 can be more accurately moved to the appropriate position. During use, after the shunt tube 5 is connected to the arterial sheath, in the process of moving the closing needle tube 2 and the first inner tube 4 in the closing needle tube 2 towards the shunt tube 5 to push out the anchor 7, the limit position of the movement of the closing needle tube 2 can be determined by the abutting of the upper end of the closing needle tube 2 and the protrusion 51 on the shunt tube 5 to avoid excessive movement of the closing needle tube 2.

[0025] In some embodiments, the operating rod 1 is provided with an anti-skid sleeve 101, and the anti-skid sleeve 101 is provided with a notch.

[0026] In some embodiments, the first inner tube 4 is provided with a blocking mark 41, and when the closing needle tube 2 moves away from the closing plug 6 relative to the first inner tube 4, the closing needle tube 2 is aligned with the blocking mark 41.

[0027] In some embodiments, the operating rod 1 is provided with an anti-inflammatory cavity 18, the anti-inflammatory cavity 18 is filled with anti-inflammatory water 19, the anti-inflammatory cavity 18 is connected with the vascular needle tube 3 through a transfusion tube 20, and the anti-inflammatory cavity 18 is provided with a pressure control device 21. During use, the anti-inflammatory water 19 in the anti-inflammatory cavity 18 is delivered into the vascular needle tube 3 through the transfusion tube 20 and finally into the blood vessels of the patient through the pressure control device 21, thereby playing a role in sterilization and anti-inflammatory and preventing infection.

[0028] As shown in some embodiments, Figure 3 and Figure 4 As shown in some embodiments, the anchor 7 includes a stent 72 and an anchor pad 71 fixed to the distal end of the stent 72, and after the anchor pad 71 is pushed out of the shunt tube 5 and enters the blood vessel, the anchor pad 71 can automatically pop open relative to the stent 72 to stretch, and the stent 72 can be a triangular stent. The stent 72, the anchor pad 71 and the closing plug 6 can be connected by an absorbable elastic absorbable member 9. Specifically, when the anchor pad 71 swings relative to the stent 72 during the pop open, in one embodiment, the portions on both sides of the stent 72 of the anchor pad 71 move separately to open. Specifically, the stent 72 can be located in the closing needle tube 2 or in the shunt tube 5, and the anchor pad 71 is located in the shunt tube 5. Of course, in other embodiments, the anchor 7 can also be a retractable balloon.

[0029] In some embodiments, the closure plug 6 and the anchor 7 are made of bioabsorbable materials. Specifically, the anchor 7 is made of a compressible, stretchable, memory-functional polymeric bioabsorbable material, such as polylactic acid. The closure plug 6 is a hydrogel occluder made of polyethylene glycol (PEG), which has a shorter absorption time and a more precise hemostatic effect. Specifically, this material expands upon contact with subcutaneous fluid to seal the arterial puncture site, and the closure plug 6 can be absorbed within 30 days. Of course, in other embodiments, the closure plug 6 can also be made of materials such as poly(lactic-co-glycolic acid) (PLGA) or polylactic acid (PLA).

[0030] like Figure 5 As shown, in some embodiments, the clamping assembly includes a tube body 81 and a clamping plate 82. The tube body 81 is disposed within the first inner tube 4 and connected to the elastic absorbent member 9, and the clamping plate 82 is connected to the tube body 81. After the closing plug 6 is released from the pipe cavity, the clamping plate 82 can be pressed against the closing plug 6 by pushing the tube body 81 towards the distal end onto the elastic absorbent member 9. The structure is simple and facilitates the compaction operation. Specifically, when the tube body 81 is not subjected to an external thrust exceeding a certain value, its position on the elastic absorbent member 9 can remain unchanged.

[0031] Working principle: when applied to femoral artery puncture blood vessel closure operation, the operation steps are: after the interventional operation is completed, the catheter, guide wire and the like are pulled out, only the femoral artery sheath tube to be plugged is reserved. A blood vessel closure device of a corresponding size (6F to plug 6F or 7F femoral artery puncture sheath; 8F to plug 8F or 9F femoral artery puncture sheath) is selected, and the blood vessel closure device is taken out from the sealed package with aseptic technique. The shunt tube 5 is inserted into the artery sheath, and then the first slider 12 and the second slider 16 are moved, the first inner tube 4 and the closure needle tube 2 are synchronously and carefully pushed to the femoral artery sheath tube, in the pushing process, the parts in the first inner tube 4 and the closure plug 6 between the first inner tube 4 and the closure needle tube 2 are synchronously advanced, similarly, the anchor pad 71 is kept in a compressed state (specifically compressed by the artery sheath tube) in front of the first inner tube 4 and the closure needle tube 2, and is synchronously advanced under the pushing force of the first slider 12 or the second slider 16, until the end of the first inner tube 4 contacts the shunt tube 5, at this time, the distal anchor pad 71 has leaked out of the artery sheath tube and automatically bounced off. Then, the artery sheath and the blood vessel closure device are withdrawn as a whole system, and the withdrawal is stopped when the resistance is great and the bleeding stops, which represents that the anchor pad 71 has tightly adhered to the blood vessel wall puncture port, in the process, the closure plug 6 keeps the initial relationship with the first inner tube 4 and the closure needle tube 2, that is, is clamped at the distal end of the two. At this time, the second slider is moved to align the closure needle tube 2 with the plugging mark 41, at this time, the hydrogel plugging plug has been released from the space between the first inner tube 4 and the closure needle tube 2. Then, the artery sheath and the blood vessel closure device continue to be withdrawn as a whole system, the closure plug 6 stays in the puncture channel due to the pulling action of the anchor pad 71, the elastic absorbable member 9 in the first inner tube 4 is continuously straightened, in the process, the tube body 81 and the pressing piece 82 keep the position on the elastic absorbable member 9 unchanged, the pressing assembly applies pressure to the closure plug 6 to compress the closure plug 6, the closure plug 6 plugs the puncture port of the blood vessel to close the blood vessel, and has the effect of rapid hemostasis. In addition, the blood vessel needle tube 3 inputs the anti-inflammatory water 19 in the anti-inflammatory cavity 18 in the operating rod 1 into the blood vessel of the patient, has the effect of sterilization and anti-inflammation, and prevents infection, so that the utility model has the advantages of rapid hemostasis, simple operation, convenient use, and wide market prospect for postoperative rapid hemostasis of some elderly patients.

[0032] The contents not described in detail in the specification all belong to the prior art known by the person skilled in the art.

[0033] The above is only a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be the replacement of part of the structure, device, method step, or the complete technical scheme. According to the technical scheme of the utility model and the utility model concept, equivalent replacement or change should be covered in the protection scope of the utility model.

Claims

1. A vascular closure device, characterized by, The application relates to a delivery assembly and a bioabsorbable closing assembly; the delivery assembly comprises an operating rod (1), a closed needle tube (2), a blood vessel needle tube (3), a first inner tube (4) and a branch tube (5), the first inner tube (4) is slidably arranged in the closed needle tube (2), the closed needle tube (2) and the blood vessel needle tube (3) are connected with the operating rod (1), a first sliding groove (11) is arranged on the operating rod (1), a first sliding block (12) is arranged on the first sliding groove (11), a first connecting rod (13) is connected with the first sliding block (12), one end of the first connecting rod (13) is connected with one end of the first inner tube (4), the branch tube (5) is arranged on the closed needle tube (2) and at least partially protrudes from one end of the closed needle tube (2) away from the first sliding block (12), the closing assembly comprises a closing plug (6) and an anchor (7), the closing plug (6) is arranged on a cavity formed between the closed needle tube (2) and the first inner tube (4), and a pressing assembly for pressing and fixing the closing plug (6) is arranged in the first inner tube (4); the anchor (7) is compressed and accommodated in the branch tube (5), the closed needle tube (2) and the first inner tube (4) in the closed needle tube (2) can slide in the branch tube (5) so as to push the anchor (7) out of the branch tube (5) and into a blood vessel, the anchor (7) can automatically stretch in the blood vessel, and the anchor (7) is connected with the closing plug (6) and the first inner tube (4) through an elastic absorbable member (9).

2. The vascular closure device according to claim 1, wherein, A protrusion (51) is arranged on one end of the branch tube (5) close to the closing plug (6), a second sliding groove (14) is arranged on the operating rod (1), a second sliding block (16) is arranged on the second sliding groove (14), a second connecting rod (17) is connected with the second sliding block (16), and one end of the second connecting rod (17) is connected with one end of the closed needle tube (2) away from the closing plug (6).

3. The vascular closure device according to claim 2, wherein, A blocking mark (41) is arranged on the first inner tube (4), and when the closed needle tube (2) moves away from the closing plug (6) relative to the first inner tube (4), the closed needle tube (2) is aligned with the blocking mark (41).

4. The vascular closure device according to claim 1, wherein, An anti-inflammatory cavity (18) is arranged on the operating rod (1), anti-inflammatory water (19) is filled in the anti-inflammatory cavity (18), the anti-inflammatory cavity (18) is connected with the blood vessel needle tube (3) through a transfusion tube (20), and a pressure control device (21) is arranged on the anti-inflammatory cavity (18).

5. The vascular closure device according to claim 1, wherein, The closing plug (6) and the anchor (7) are made of bioabsorbable material.

6. The vascular closure device according to claim 1, wherein, The anchor (7) comprises a support (72) and an anchor pad (71) fixed to a distal end of the support (72), and after the anchor pad (71) is pushed out of the branch tube (5) and enters a blood vessel, the anchor pad (71) can automatically spring away relative to the support (72) to stretch.

7. The vascular closure device according to claim 1, wherein, The pressing assembly comprises a tube body (81) arranged in the first inner tube (4) and connected with the elastic absorbable member (9), and a pressing sheet (82) connected with the tube body (81).

8. The vascular closure device according to claim 1, wherein, The material of the operating rod (1) comprises a titanium alloy material.

9. The vascular closure device according to claim 2, wherein, The first chute (11) and the second chute (14) are provided with scales in mm.

Images