Vascular closure devices and systems

Abstract

The application discloses a kind of vascular closure device and system, it is related to medical instrument technical field.The vascular closure device includes delivery tube, plugging assembly and control assembly;Plugging assembly is switchably arranged in delivery tube between storage state and release state;Control assembly includes handle shell and locking line mechanism arranged in handle shell, handle shell is fixed to the proximal end of delivery tube, suture is arranged in locking line mechanism, suture is connected with plugging assembly through delivery tube, locking line mechanism is used to release and / or wind suture, to control plugging assembly switches between storage state and release state;In storage state, plugging assembly is contained in delivery tube;In release state, plugging assembly extends outside delivery tube.The application improves the structure of vascular closure device, the structure is relatively simple, convenient to operate, the sealing effect of blood vessel puncture point is good, and the hemostatic effect is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a vascular closure device and system. Background Technology

[0002] To overcome the limitations of manual compression hemostasis, percutaneous arterial occlusion devices / vascular closure devices have been developed. Using these devices, hemostasis can be achieved quickly with minimal or no pressure on the blood vessel, and is unaffected by continuous anticoagulation. This occlusion technique can shorten hemostasis time and bed rest time, reducing patient suffering and the intensity of medical care.

[0003] Existing vascular closure devices include a handle and a rod-shaped assembly. The handle includes a housing and a power mechanism mounted on the housing. The rod-shaped assembly includes a first catheter, a second catheter, and a third catheter. The power mechanism includes a first propulsion device, a second propulsion device, a third propulsion device, and a fourth rotation device. The first propulsion device is connected to the first catheter to drive it along its axial direction. The second propulsion device is connected to the second catheter to drive it along its axial direction. The third propulsion device is connected to the third catheter to drive it along its axial direction. The fourth rotation device is connected to the third catheter to rotate it around its central axis. The first, second, and third catheters are sequentially fitted from the outside in, with the third catheter used to connect an implant. In a first state, the implant is located inside the first catheter, and retraction of the first catheter exposes the implant. In a second state, retraction of the first catheter allows the implant to fully deploy. In a third state, axial movement of the second catheter secures the implant to the blood vessel. In a fourth state, rotation of the third catheter around its axis puts the implant in a pre-released state. In the fifth state, movement of the third catheter along its axis can detach the implant from the third catheter. However, the handle structure of this vascular closure device is complex, making it inconvenient to operate, resulting in a longer hemostasis time and poorer hemostasis effect. Summary of the Invention

[0004] The main objective of this invention is to provide a vascular closure device and system, which aims to improve the ease of operation of the vascular closure device, reduce hemostasis time, and thus improve the hemostasis effect.

[0005] To achieve the above objectives, the present invention provides a vascular closure device, comprising:

[0006] delivery pipe;

[0007] A sealing component is switchably disposed within the delivery pipe, capable of switching between a retracted state and a released state; and

[0008] The control assembly includes a handle housing and a thread-locking mechanism disposed within the handle housing. The handle housing is fixed to the proximal end of the delivery tube. A sewing thread is wound inside the thread-locking mechanism. The sewing thread is connected to the sealing assembly through the delivery tube. The thread-locking mechanism is used to unwind and / or rewind the sewing thread to control the sealing assembly to switch between the retracted state and the released state.

[0009] In the stored state, the sealing component is housed within the delivery pipe;

[0010] In the released state, the sealing assembly extends outside the delivery pipe.

[0011] Optionally, the thread-locking mechanism includes an outer thread-locking spool, an inner thread-locking spool, a winding reel, and a thread-locking cover. The inner thread-locking spool is partially disposed inside the outer thread-locking spool and forms a receiving cavity and a lead-line channel communicating with the receiving cavity. The winding reel is disposed inside the receiving cavity. A thread guide wheel is provided inside the handle housing. The sewing thread is wound on the winding reel and sequentially led through the lead-line channel and the thread guide wheel to the delivery tube. The thread-locking cover is disposed on the end of the inner thread-locking spool and presses down on the winding reel.

[0012] Optionally, the thread-locking mechanism is movably disposed within the handle housing between a first position and a second position along the axial direction of the handle housing to release the thread;

[0013] The handle housing is provided with a spring, the outer locking spool is provided with a step and an extension arm, the handle housing is provided with a movable cavity for the locking mechanism to move and a sound control device located on one side of the wire guide wheel, and the spring is sleeved on the outer periphery of the outer locking spool and its two ends abut against the step and the cavity wall near the movable cavity, respectively.

[0014] In the first position, the extension arm is separated from the acoustic control;

[0015] In the second position, the extension arm abuts against the sound control or the extension arm is inserted into the sound control; the sound control is used to emit a prompt sound at the moment when the extension arm moves to the second position and contacts the sound control.

[0016] Optionally, the sound control device has an insertion cavity with an inlet and outlet, through which the extension arm enters and exits the insertion cavity; and / or

[0017] The locking cover is provided with protrusions for securing the wire; and / or

[0018] The locking cover is provided with a pinch adjustment part for the operator to grip, the pinch adjustment part being located inside or outside the inner locking tube. The locking cover is also used to drive the winding reel to rotate under external force; and / or

[0019] The thread-locking mechanism also includes a thread-holding component, which is located inside the outer thread-locking tube and is used to hold the thread in place.

[0020] Optionally, the handle housing includes a housing and a sliding member slidably disposed at one end of the housing along the axial direction of the housing. The sliding member is provided with a buckle for engaging with the front seat of the sheath during the procedure.

[0021] Optionally, the vascular closure device further includes a clasp cap, which is movably fitted onto the distal end of the delivery tube and is used to be locked or blocked by the front seat of the sheath during the procedure.

[0022] Optionally, the occlusion assembly includes an anchoring plate, a sponge, and a locking buckle. The anchoring plate is connected in series with the suture and the sponge, and the locking buckle is sleeved on the suture. The anchoring plate is used to conform to the inner wall of the blood vessel, the sponge is used to seal the puncture site from the outside of the blood vessel wall, and the locking buckle is used to tighten the suture.

[0023] Optionally, a push tube is also movably sleeved on the stitch, the push tube being located on the proximal side of the buckle and used to move under the drive of an external force to move the buckle, so as to lock the sponge and the anchor plate;

[0024] The delivery tube is connected to the handle housing via a fixing seat. The vascular closure device also includes a guidewire tube for the passage of a guidewire. The guidewire tube passes through the handle housing and the fixing seat and extends to the outside of the delivery tube. The proximal end of the guidewire tube is provided with a pusher for pushing the guidewire tube out of the handle housing towards the proximal end. The push tube is provided with a guidewire lumen for allowing the guidewire tube to pass through.

[0025] Optionally, the anchoring piece is made of an absorbable polymer material; and / or

[0026] The sponge is made of biodegradable collagen material; and / or

[0027] The latch is made of a biodegradable metal material; and / or

[0028] The sutures are made of biodegradable materials.

[0029] To achieve the above objectives, the present invention also proposes a vascular closure system, comprising:

[0030] The vascular closure device as described above; and

[0031] The sheath includes a front seat and a guide tube connected to the front seat. The front seat has an inlet communicating with the guide tube, and the inlet is used for insertion of the delivery tube of the vascular closure device.

[0032] The vascular closure device includes:

[0033] delivery pipe;

[0034] A sealing component is switchably disposed within the delivery pipe, capable of switching between a retracted state and a released state; and

[0035] The control assembly includes a handle housing and a thread-locking mechanism disposed within the handle housing. The handle housing is fixed to the proximal end of the delivery tube. A sewing thread is wound inside the thread-locking mechanism. The sewing thread is connected to the sealing assembly through the delivery tube. The thread-locking mechanism is used to unwind and / or rewind the sewing thread to control the sealing assembly to switch between the retracted state and the released state.

[0036] In the stored state, the sealing component is housed within the delivery pipe;

[0037] In the released state, the sealing assembly extends outside the delivery pipe.

[0038] In the technical solution of this invention, the vascular closure device includes a delivery tube, an occlusion component, and a control component. The occlusion component is switchably disposed within the delivery tube in a retracted state and a released state. The control component includes a handle housing and a suture locking mechanism disposed within the handle housing. The handle housing is fixed to the proximal end of the delivery tube. A suture is wound within the suture locking mechanism, and the suture is connected to the occlusion component via the delivery tube. The suture locking mechanism is used to unwind and / or rewind the suture to control the switching of the occlusion component between the retracted and released states. In the retracted state, the occlusion component is housed within the delivery tube; in the released state, the occlusion component extends outside the delivery tube. It can be understood that this invention improves the structure of the vascular closure device. The control component, including the handle housing and the suture locking mechanism, has a simpler structure than the prior art, lacks a complex power mechanism, improves operational convenience, reduces hemostasis time, and thus effectively improves the hemostasis effect. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 These are schematic diagrams illustrating the structure of some embodiments of the vascular closure system of the present invention;

[0041] Figure 2 These are schematic diagrams illustrating the structure of some embodiments of the vascular closure device of the present invention;

[0042] Figure 3 These are exploded views of some embodiments of the blood vessel closure device of the present invention;

[0043] Figure 4 These are overall cross-sectional views and cross-sectional views of the occlusion components of some embodiments of the vascular closure device of the present invention.

[0044] Figure 5 This is a schematic diagram of the structure of the first locking mechanism in some embodiments of the blood vessel closure device of the present invention;

[0045] Figure 6 This is a cross-sectional view of a first locking mechanism in some embodiments of the vascular closure device of the present invention;

[0046] Figure 7 This is an exploded view of the first locking mechanism in some embodiments of the blood vessel closure device of the present invention;

[0047] Figure 8 This is a schematic diagram of the second locking mechanism in some embodiments of the blood vessel closure device of the present invention;

[0048] Figure 9 This is an exploded view of the second locking mechanism in some embodiments of the blood vessel closure device of the present invention;

[0049] Figure 10 This is a schematic diagram of the structure of the vascular closure device during the insertion of the vascular closure device into the sheath in some embodiments of the vascular closure system of the present invention;

[0050] Figure 11 This is a front view of the vascular closure device during the insertion of the vascular closure device into the sheath in some embodiments of the vascular closure system of the present invention;

[0051] Figure 12 This is a schematic diagram of the structure of the sliding component of the vascular closure device and the front seat of the sheath in some embodiments of the vascular closure system of the present invention.

[0052] Figure 13 This is a front view of the vascular closure device in some embodiments of the vascular closure system of the present invention when the sliding member of the vascular closure device is engaged with the front seat of the sheath;

[0053] Figure 14 This is a front view of the vascular closure device housing retracted in some embodiments of the vascular closure system of the present invention;

[0054] Figure 15 This is a schematic diagram of the structure of the vascular closure device with its housing retracted in some embodiments of the vascular closure system of the present invention;

[0055] Figure 16 This is a front view of the entire system in a backward view in some embodiments of the vascular closure system of the present invention;

[0056] Figure 17 This is a schematic diagram of the overall retraction of the vascular closure system in some embodiments of the present invention.

[0057] Explanation of icon numbers:

[0058] 100. Vascular closure device; 200. Sheath; 10. Delivery tube; 20. Occlusion assembly; 30. Control assembly; 40. Guide wire tube; 31. Handle housing; 32. Thread locking mechanism; 33. Suture; 34. Fixing seat; 35. Spring; 36. Thread guide wheel; 37. Sound control; 321. Outer thread locking tube; 322. Inner thread locking tube; 323. Winding reel; 324. Thread locking cover; 325. Thread clamp; 32a. Receptacle; 32b. Thread guide channel; 3211. Extension arm; 3241. Protrusion; 3242. Pinch adjustment part; 311. Housing; 312. Sliding part; 3121. Buckle; 11. Cap; 12. Advance tube; 21. Anchor plate; 22. Sponge; 23. Lock; 210. Front seat; 220. Guide tube; 210a. Slot.

[0059] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0060] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0061] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0062] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0063] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. The word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. The technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0064] This invention proposes a blood vessel closure device.

[0065] Reference Figures 1 to 4 In some embodiments of the present invention, the vascular closure device 100 includes a delivery tube 10, an occlusion component 20, and a control component 30; the occlusion component 20 is switchably disposed within the delivery tube 10 in a retracted state and a released state; the control component 30 includes a handle housing 31 and a suture locking mechanism 32 disposed within the handle housing 31, the handle housing 31 being fixed to the proximal end of the delivery tube 10, and a suture 33 being wound within the suture locking mechanism 32, the suture 33 being connected to the occlusion component 20 via the delivery tube 10, the suture locking mechanism 32 being used to unwind and / or rewind the suture 33 to control the switching of the occlusion component 20 between the retracted state and the released state; in the retracted state, the occlusion component 20 is contained within the delivery tube 10; in the released state, the occlusion component 20 extends outside the delivery tube 10.

[0066] In this embodiment, the occlusion component 20 may employ a component or assembly capable of stopping bleeding. Preferably, it mainly refers to... Figure 3 and Figure 4 To improve the sealing effect of the vascular puncture site, the sealing component 20 may include an anchoring piece 21, a sponge 22 and a locking buckle 23. The anchoring piece 21 is connected in series with the sponge 22 via the suture 33, and the locking buckle 23 is sleeved on the suture 33. The anchoring piece 21 is used to conform to the inner wall of the blood vessel, the sponge 22 is used to seal the puncture site from the outside of the blood vessel wall, and the locking buckle 23 is used to tighten the suture 33.

[0067] In this embodiment, the anchoring piece 21 may be made of an absorbable polymer material, such as polylactic acid-glycolic acid copolymer or other synthetic absorbable polymers, which can be degraded into naturally occurring metabolites in the presence of water.

[0068] Sponge 22 can be made from biodegradable collagen materials, such as collagen pads made from a mixture of insoluble and soluble collagen fibers. Collagen can be obtained from the connective tissue of animals, and collagen can be purified from the subcutaneous layer of cowhide.

[0069] The latch 23 can be made of biodegradable metal material, preferably absorbable iron, stainless steel, magnesium alloy, etc., but is not limited here.

[0070] The suture 33 can be any elongated component, such as filaments, threads, or braids, and can be made of biodegradable materials.

[0071] In this embodiment, the thread locking mechanism 32 may be an automatic winding structure, a manual winding structure, or a semi-automatic winding structure capable of unwinding and / or rewinding the sewing thread 33; no specific structure is limited here.

[0072] In use, when the operator delivers the distal end of the delivery tube 10 to the target hemostatic position, they only need to operate the suture locking mechanism 32 to unwind the suture 33, which will release the occlusion component 20 stored in the delivery tube 10 to the outside of the delivery tube 10, thus completing the rapid release of the occlusion component 20. The whole process is simple to operate.

[0073] It is understood that the present invention improves the structure of the vascular closure device 100. The control component 30 with the above structure is simpler in structure than the prior art, without a complex power mechanism, which improves the convenience of operation, reduces the hemostasis time, and thus effectively improves the hemostasis effect.

[0074] To further improve the effectiveness and efficiency of unwinding and rewinding the suture 33, and to prevent the suture 33 from being too tight or too loose, so that the sealing component 20 can be released quickly and accurately to the target position, the following references are made: Figures 3 to 9 In some embodiments, the thread locking mechanism 32 may include an outer thread locking cylinder 321, an inner thread locking cylinder 322, a winding reel 323, and a thread locking cover 324. The inner thread locking cylinder 322 is partially disposed inside the outer thread locking cylinder 321 and forms a receiving cavity 32a and a lead wire channel 32b communicating with the receiving cavity 32a. The winding reel 323 is disposed inside the receiving cavity 32a. A thread guide wheel 36 is provided inside the handle housing 31. The sewing thread 33 is wound on the winding reel 323 and is led to the delivery pipe 10 in sequence through the lead wire channel 32b and the thread guide wheel 36. The thread locking cover 324 is disposed on the end of the inner thread locking cylinder 322 and presses down the winding reel 323. The locking mechanism 32 is not coaxial with the delivery tube 10. The thread guide wheel 36 can guide the sewing thread 33 to the delivery tube 10. This helps to improve the utilization of the internal space of the handle housing 31, providing sufficient space for other structures such as the guide tube 40, and improving the structural compactness of the control component 30.

[0075] In this embodiment, the main body of the outer locking cylinder 321 can be a conical cylinder or the like, and the main body of the inner locking cylinder 322 can be a circular cylinder or the like; there are no limitations here. The shape and size of the winding reel 323 can be adapted to the structure of the accommodating cavity 32a of the inner locking cylinder 322 to ensure the compactness of the overall structure of the locking mechanism 32. The shape and size of the locking cover 324 can be adapted to the end face of the inner locking cylinder 322 and the structure of the contacting winding reel 323 to ensure the reliability and stability of the installation structure.

[0076] In this embodiment, as Figure 7 and Figure 9 As shown, the thread-locking cover 324 may be provided with a protrusion 3241 for pressing the thread, which can effectively prevent the stitch 33 at the winding reel 323 from becoming misaligned. For easy installation and disassembly and convenient manual adjustment of the winding reel 323, such as... Figure 7 and Figure 9 As shown, the locking cover 324 may also be provided with a pinch adjustment part 3242 for the operator to pinch. The pinch adjustment part 3242 is located inside or outside the inner locking tube 322. The locking cover 324 is also used to drive the winding reel 323 to rotate under the drive of external force.

[0077] To ensure that the suture 33 moves as far as possible along the axial direction of the delivery tube 10, thereby improving the effectiveness of the sealing assembly 20 release, refer to Figures 3 to 9 In some embodiments, the thread-locking mechanism 32 may further include a thread-holding member 325, which is disposed inside the outer thread-locking tube 321 and is used to hold the sewing thread 33 in place. The thread-holding member 325 may be made of a soft material, preferably a silicone pad, but this is not limited to this.

[0078] In some embodiments, please combine Figures 3 to 6 The thread-locking mechanism 32 can be designed to be movably disposed within the handle housing 31 between a first position and a second position along the axial direction of the handle housing 31 to release the thread 33. A spring 35 is provided within the handle housing 31, and a step and an extension arm 3211 are provided on the outer thread-locking tube 321. The spring 35 is sleeved on the outer periphery of the outer thread-locking tube 321, with its two ends abutting against the step and the cavity wall near the proximal end of the movable cavity, respectively. The handle housing 31 provides a movable cavity for the thread-locking mechanism 32 to move and a sound control 37 located on one side of the thread guide 36. The main function of the spring 35 is to automatically reset and restore the thread-locking mechanism 32 to the first position after the external force applied to it is removed.

[0079] In the first position, the extension arm 3211 is separated from the acoustic control 37; in the second position, the extension arm 3211 abuts against the acoustic control 37 or the extension arm 3211 is inserted into the acoustic control 37. The acoustic control 37 is used to emit a prompt sound the instant the extension arm 3211 moves to the second position and contacts the acoustic control 37, thereby prompting the operator that the blocking component 20 has been released.

[0080] In this embodiment, the acoustic control 37 is provided with an insertion cavity having an inlet and outlet, through which the extension arm 3211 enters and exits the insertion cavity. Specifically, the acoustic control 37 can be roughly triangular in shape, with the inlet and outlet located at the apex, and horn-shaped guides can be provided on both sides of the inlet and outlet to guide the extension arm 3211 into the insertion cavity.

[0081] To further improve the accuracy and convenience of releasing the occlusion component 20 to the target position using the vascular closure device, refer to Figures 1 to 4 , Figures 10 to 17 In some embodiments, the handle housing 31 may include a housing 311 and a sliding member 312 slidably disposed at one end of the housing 311 along the axial direction of the housing 311. The sliding member 312 is provided with a buckle 3121, which is used to engage with the front seat 210 of the sheath 200 during the procedure. The locking mechanism 32 is installed inside the housing 311.

[0082] In this embodiment, the housing 311 may include a first housing and a second housing, and the inner sides of the first housing and the second housing are provided with a track for the slider of the slider 312 to move.

[0083] When the housing 311 slides, the locking mechanism 32 inside the housing 311 moves between the first position and the second position. When it moves to the second position, the suture 33 is stretched, thereby releasing the sealing component 20. When the locking mechanism 32 moves to the final restricted position, i.e. the second position, the suture 33 stops releasing.

[0084] In some embodiments, refer to Figures 1 to 4 The vascular closure device 100 may also include a cap 11, which is movably sleeved on the distal end of the delivery tube 10 and is used to be locked or blocked by the front seat 210 of the sheath 200 during the procedure. In this way, the delivery tube 10 can be easily and accurately inserted into the sheath 200, which further improves the convenience of the operation.

[0085] To facilitate operation and further improve hemostasis efficiency, refer to Figure 4 In this embodiment, a push tube 12 can also be movably sleeved on the suture 33. The push tube 12 is located on the proximal side of the buckle 23 and is used to move under the drive of external force to move the buckle 23, so as to lock the sponge 22 and the anchor plate 21.

[0086] In the initial storage state, the cap 11 is fitted onto the far end of the delivery tube 10. The white sponge 22, the buckle 23, the stitching 33, and the push tube 12 are all located inside the inner tube. The anchoring piece 21 is located in the gap between the outer wall of the delivery tube 10 and the inner wall of the cap 11, and can be tilted for easy release.

[0087] In this embodiment, the proximal end of the delivery tube 10 is connected to the handle housing 31 via the fixing seat 34. The vascular closure device may also include a guidewire tube 40 for the passage of a guidewire, facilitating the delivery of the occlusion assembly 20 to the target suture position. The guidewire tube 40 passes through the handle housing 31 and the fixing seat 34 and extends to the distal end of the delivery tube 10. The proximal end of the guidewire tube 40 is provided with a push-top for pushing the guidewire tube 40 proximal from the handle housing 31. The push-top may be the end wall inside the proximal end of the guidewire tube 40. The advance tube 12 is provided with a guidewire lumen for allowing the guidewire tube 40 to pass through and a suture lumen for allowing the suture 33 to pass through.

[0088] The present invention also proposes a vascular closure system, referring to Figures 10 to 17 The vascular closure system includes a vascular closure device 100. The specific structure of the vascular closure device 100 is as described in the above embodiments. Since the vascular closure system proposed in this invention includes all the solutions of all the above embodiments of the vascular closure device 100, it has at least the same technical effects as the above vascular closure device 100, which will not be described in detail here.

[0089] Reference Figures 10 to 17 In some embodiments of the present invention, the vascular closure system further includes a sheath 200, which includes a front seat 210 and a guide tube 220 connected to the front seat 210. The front seat 210 has an inlet communicating with the guide tube 220. The inlet is used for insertion of the delivery tube 10 of the vascular closure device 100 and for engaging with a snap 3121 on the handle housing 31 of the vascular closure device 100. In this embodiment, a hemostatic valve for hemostasis may be provided in the inlet of the front seat 210.

[0090] The procedure can be performed as follows:

[0091] Step 1: Insert the sheath 200 into the blood vessel, leaving the sheath 200's anterior seat 210 outside the body;

[0092] Step two, mainly refer to Figure 10 and Figure 11 Operate the vascular closure device 100, insert the cap 11 on the distal end of the delivery tube 10 of the vascular closure device 100 into the front seat 210, so that the cap 11 is stuck at the entrance and does not enter the guide tube 220, and the delivery tube 10 enters the guide tube 220.

[0093] Step 3, mainly refer to Figure 12 and Figure 13 Move the entire vascular closure device 100 forward so that the buckle 3121 on the sliding part 312 of the handle housing 31 is locked in place with the slot 210a of the front seat 210. At this time, the anchoring piece 21 is exposed from the delivery tube 10, and the delivery tube 10 is exposed at the distal end of the sheath 200. The anchoring piece 21 is fully exposed from the sheath 200.

[0094] Step four, mainly refer to Figure 14 and Figure 15 Fix the position of the slider 312, retract the main body of the handle housing 31, and the other end of the slider 312 is locked in the snap-fit ​​groove in the housing 311. At this time, the anchoring piece 21 is tightly attached to the distal end of the sheath tube 200.

[0095] Step 5, mainly refer to Figure 16 and Figure 17 The entire vascular closure device 100 and sheath 200 are retracted, and the suture 33 is stretched. At this time, the advance tube 12 is exposed and can be manually pushed to move the locking buckle 23 forward, so that the locking buckle 23 locks the sponge 22 and the anchoring plate 21. It should be noted that the locking buckle 23 and the sponge 22 are outside the blood vessel, and the anchoring plate 21 is inside the blood vessel. The two are locked together to close the blood vessel.

[0096] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A vascular closure device, characterized in that, include: delivery pipe; The sealing component is switchably disposed within the delivery pipe in a retracted state and a released state; as well as The control assembly includes a handle housing and a thread-locking mechanism disposed within the handle housing. The handle housing is fixed to the proximal end of the delivery tube. A thread is wound within the thread-locking mechanism. The thread passes through the delivery tube and connects to the sealing assembly. The thread-locking mechanism is used to unwind and / or rewind the thread to control the sealing assembly to switch between a retracted state and a released state. In the retracted state, the sealing assembly is housed within the delivery tube; in the released state, the sealing assembly extends outside the delivery tube. The thread-locking mechanism includes an outer thread-locking spool, an inner thread-locking spool, a winding reel, and a thread-locking cover. The inner thread-locking spool is partially disposed within the outer thread-locking spool and forms a receiving cavity and a lead-in channel communicating with the receiving cavity. The winding reel is disposed within the receiving cavity. A thread guide wheel is provided inside the handle housing. The thread is wound around the winding reel and sequentially guided through the lead-in channel and the thread guide wheel to the delivery tube. The thread-locking cover is disposed on the end of the inner thread-locking spool and presses down on the winding reel. The thread-locking mechanism is movably disposed within the handle housing along the axial direction of the handle housing between a first position and a second position to release the thread. The handle housing contains a spring, the outer locking spool has a step and an extension arm, the handle housing contains a movable cavity for the locking mechanism to move and a sound control device located on one side of the guide wheel, the spring is sleeved on the outer periphery of the outer locking spool and its two ends abut against the step and the cavity wall near the movable cavity, respectively; in the first position, the extension arm is separated from the sound control device; in the second position, the extension arm abuts against the sound control device or the extension arm is inserted into the sound control device; the sound control device is used to emit a prompt sound at the moment when the extension arm moves to the second position and contacts the sound control device.

2. The vascular closure device as described in claim 1, characterized in that, The acoustic control device is provided with an insertion cavity having an inlet and outlet, and the extension arm enters and exits the insertion cavity through the inlet and outlet; and / or The locking cover is provided with protrusions for securing the wire; and / or The locking cover is provided with a pinch adjustment part for the operator to grip, the pinch adjustment part being located inside or outside the inner locking tube. The locking cover is also used to drive the winding reel to rotate under external force; and / or The thread-locking mechanism also includes a thread-holding component, which is located inside the outer thread-locking tube and is used to hold the thread in place.

3. The vascular closure device as described in claim 1, characterized in that, The handle housing includes a housing and a sliding member slidably disposed at one end of the housing along the axial direction of the housing. The sliding member is provided with a buckle, which is used to engage with the front seat of the sheath during the procedure.

4. The vascular closure device as described in claim 3, characterized in that, The vascular closure device also includes a clasp, which is movably fitted onto the distal end of the delivery tube and is used to be locked or blocked by the front seat of the sheath during the procedure.

5. The vascular closure device according to any one of claims 1-4, characterized in that, The occlusion assembly includes an anchoring plate, a sponge, and a locking buckle. The anchoring plate is connected in series with the suture and the sponge, and the locking buckle is sleeved on the suture. The anchoring plate is used to conform to the inner wall of the blood vessel, the sponge is used to seal the puncture site from the outside of the blood vessel wall, and the locking buckle is used to tighten the suture.

6. The vascular closure device as described in claim 5, characterized in that, A push tube is also movably sleeved on the seam. The push tube is located on the proximal side of the buckle and is used to move under the drive of external force to move the buckle, so as to lock the sponge and the anchor plate. The delivery tube is connected to the handle housing via a fixing seat. The vascular closure device also includes a guidewire tube for the passage of a guidewire. The guidewire tube passes through the handle housing and the fixing seat and extends to the outside of the delivery tube. The proximal end of the guidewire tube is provided with a pusher for pushing the guidewire tube out of the handle housing towards the proximal end. The push tube is provided with a guidewire lumen for allowing the guidewire tube to pass through.

7. The vascular closure device as claimed in claim 6, characterized in that, The anchoring piece is made of an absorbable polymer material; and / or The sponge is made of biodegradable collagen material; and / or The latch is made of a biodegradable metal material; and / or The sutures are made of biodegradable materials.

8. A vascular closure system, characterized in that, include: The vascular closure device as described in any one of claims 1-7; as well as The sheath includes a front seat and a guide tube connected to the front seat. The front seat has an inlet communicating with the guide tube, and the inlet is used for insertion of the delivery tube of the vascular closure device.

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