51 results about "Vascular closure device" patented technology

The present disclosure relates to a vascular closure device adapted for use in closing a puncture in a blood vessel after e.g. a percutaneous interventional procedure. The disclosure also relates to a method for vascular closure using such a vascular closure device.

The invention relates to a handle and a blood vessel closure device, the handle is used for the blood vessel closure device and extends along a longitudinal axis, the handle comprises a connecting rod assembly, and the connecting rod assembly comprises a center rod with a rotation center; the first sliding block can slide along the longitudinal axis; the second sliding block can slide along the longitudinal axis; one end part of the pull rod is rotationally connected with one end part of the center rod, and the other end part of the pull rod is rotationally connected with the first sliding block; one end part of the push rod is rotationally connected with the other end part of the center rod, and the other end part of the push rod is rotationally connected with the second sliding block; when the center rod rotates around the rotating center, the first sliding block and the second sliding block can be driven to move oppositely. The blood vessel closing device is easy to operate and high in hemostasis efficiency.

The present invention relates to a vascular closure device comprising: an outer tube extending along a longitudinal axis; a sealant disposed on a distal end side in the outer tube; the push tube is arranged in the outer tube in a sliding manner, and the far end side of the push tube is close to the sealant; the connecting rod assembly comprises a center rod, a pull rod and a push rod, the two ends of the pull rod are rotationally connected with one end of the center rod and the outer pipe respectively, and the two ends of the push rod are rotationally connected with the other end of the center rod and the push pipe respectively; the movement of the center rod can drive the outer pipe and the push pipe to move oppositely so that the sealant can be pushed out of the outer pipe to be released. The blood vessel closing device is easy to operate and good in hemostatic effect.

The invention discloses a blood vessel closing device and system, and relates to the technical field of medical instruments. The blood vessel closing device comprises a conveying pipe, a plugging assembly and a control assembly. The plugging assembly is arranged in the conveying pipe in the mode that the plugging assembly can be switched between the storage state and the release state. The control assembly comprises a handle shell and a thread locking mechanism arranged in the handle shell, the handle shell is fixed to the near end of the conveying pipe, a sewing thread is wound in the thread locking mechanism, the sewing thread is connected with the plugging assembly through the conveying pipe, and the thread locking mechanism is used for unwinding and / or winding the sewing thread so as to control the plugging assembly to be switched between the storage state and the release state; in the storage state, the plugging assembly is contained in the conveying pipe; and in the release state, the plugging assembly extends out of the conveying pipe. The structure of the blood vessel closure device is improved, the structure is relatively simple, operation is convenient and fast, the sealing effect on a blood vessel puncture point is good, and the hemostasis effect is improved.

A blood vessel closure device is disclosed. The blood vessel closure device comprises: a handle; an extension tube; the clamp head comprises a first clamping assembly and a second clamping assembly, and each of the first clamping assembly and the second clamping assembly comprises a heating wire used for heating and a temperature detection piece used for obtaining the real-time temperature of the heating wire; the heating controller is arranged in the handle, the heating controller is electrically connected with the heating wire and the temperature detection piece, the heating controller can control the heating wire to start heating and stop heating, and the heating controller is configured to obtain the heating rate based on the change of the real-time temperature about time when the real-time temperature rises; after the real-time temperature is larger than or equal to the first threshold value and the temperature rise rate is larger than or equal to the second threshold value, closing completion information is generated. According to the blood vessel closing device provided by the embodiment of the invention, when closing is just completed can be accurately known for blood vessels with different tissue thicknesses, and the stability of the closing effect is ensured.

A vascular closure device and a delivery system. The delivery system comprises the vascular closure device and a delivery tube. The delivery tube is used to deliver the vascular closure device to a predetermined position. The vascular closure device comprises an anchoring assembly and a limiting assembly. The anchoring assembly comprises a first anchoring member and a connecting tube, with the first anchoring member sleeved on the outside of the connecting tube. The limiting assembly comprises a limiting foot fixedly connected to the connecting tube. The first anchoring member is configured to be positioned at a first predetermined position outside a target vessel. The connecting tube is configured to pass through a gap in the target vessel, so as to position the limiting foot inside the target vessel. The limiting foot is configured to anchor at the gap. The first anchoring member is configured to cooperate with the limiting foot to clamp and close the gap. The vascular closure device is easy to operate, minimizes implant displacement, reduces the risk of vascular complications, and exhibits excellent consistency during vessel closure, thereby enhancing surgical safety and reliability.

Handle of a delivery system for a vascular closure device. 1.1) Perspective view; 1.2) Perspective view; 1.3) Perspective view; 1.4) Perspective view; 1.5) Top view; 1.6) Bottom view; 1.7) Left side view; 1.8) Right side view; 1.9) Front view; 1.10) Rear view.

A vessel closure device for delivering immediate hemostasis at a puncture site in a wall of a blood vessel includes an intravascular anchor having one or more suture attachment points, an extravascular cap having a lumen, a sealant, and a suture connected to at least one of the one or more suture attachment points of the intravascular anchor and threaded through the lumen of the extravascular cap, wherein each of the intravascular anchor, extravascular cap, sealant, and suture are formed of bioabsorbable materials.

The invention belongs to the technical field of medical instruments, and relates to a blood vessel closure device, a conveying mechanism comprises an outer catheter, an inner catheter and a control wire, the inner catheter is movably sleeved with the outer catheter, the inner cavity of a catheter body of the inner catheter is movably sleeved with the control wire, and a hemostatic material is assembled between the outer catheter and the inner catheter; the inner catheter and the control wire are used for being connected with a hemostatic umbrella, the first driving mechanism is used for controlling the control wire to axially move relative to the inner catheter, and the second driving mechanism is used for controlling the outer catheter to axially move relative to the inner catheter and has a locking state and an unlocking state. The first driving mechanism controls the control wire to move towards the far end till the hemostatic umbrella is opened, and meanwhile the second driving mechanism can be synchronously controlled to be converted from the locking state to the unlocking state. Through linkage cooperation of the first driving mechanism and the second driving mechanism, the stability and safety of the blood vessel closing device can be improved, operation steps are simplified on the basis, and operation convenience is improved.

A closure device system for sealing a percutaneous puncture in a vessel wall can comprise a toggle configured to engage an interior surface of the vessel wall, a plug configured to engage an exterior surface of the vessel wall, and a suture that extends through the plug and through the toggle along at least a first direction so as to couple the toggle to the plug. The system can further comprise a tube that extends through the plug and through the toggle along the first direction such that a distal end of the tube is disposed distally to the toggle. The tube can define a guidewire lumen that extends therethrough along the first direction. And the guidewire lumen can be configured to receive a guidewire that protrudes from the vessel wall such that the plug, toggle, and tube are slidable along the guidewire toward the vessel wall.

An embolism protection system (10) includes a blood vessel access device (100), a blood vessel reinfusion device (200), a filter (300), a conduit (400), and a blood vessel closure device (600). A vascular access device (100) is configured to percutaneously access a first blood vessel (20). The vascular reinfusion device (200) is configured to access a second blood vessel (30). The filter (300) is configured to collect embolism. The conduit (400) is configured to couple the vascular access device (100), the vascular reinfusion device (200), and the filter (300). A vessel closure device (600) is configured to percutaneously close an opening in a first vessel (20). The system is configured to direct blood flow from a first blood vessel (20) through the vascular access device (100), the filter (300), and the vascular reinfusion device (200) and into a second blood vessel (30).

The application relates to the technical field of vascular closure devices, in particular to a semi-interpenetrating polymer network and a preparation method and application thereof. The semi-interpenetrating polymer network is prepared through photo-crosslinking after blending of functional polyether and polyester; and the semi-interpenetrating polymer network is provided with an adhesion functional group and a photo-crosslinking functional group. The shape memory molecular switch and the adhesion functional group are integrated into one material through an interpenetrating network structure design, the synergy of 3D printing and in-situ crosslinking of the material is realized through photo-crosslinking, the structural stability and shape memory performance of a printing device are improved, and intelligent self-deployment and stable adhesion plugging of the vascular closure device are realized.

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.

Multiple vascular wall penetrations are formed and sealed in a single blood vessel, typically a vein, for performing cardiac and other catheter-based procedures. Access sheaths are placed in two or more tissue tracts each having a vascular wall penetration at a distal end and into a lumen of the blood vessel. A catheter is advanced though each of the access sheaths to perform a therapeutic or diagnostic procedure. A vascular closure device is introduced through each access sheath, typically sequentially, and an occlusion element at a distal end of the device is deployed against an inner wall of the blood vessel in a manner so that the adjacent access sheath does not interfere or overlap with the deployed occlusion element. The vascular penetration at the distal end in that tissue tract may then be sealed prior to using another vascular closure device to seal a caudally adjacent vascular wall penetration.

A vascular closure assembly may include an actuator assembly having a chassis portion and an elongated housing, the elongated housing having a proximal end fixed to the distal end of the chassis portion, a distal end extending away from the chassis portion, a distal portion, and a plurality of anchor expander lumens. Each anchor expander lumen may extend axially along the elongated housing or in any other suitable path and terminate distally at a distal port located within the distal portion of the elongated housing. The actuator assembly may further include a plurality of anchor expanders, each anchor expander may be slidably positioned within the respective anchor expander lumen of the elongated housing. Each anchor expander may include an expanding rod having an elongated elastic configuration and a pre-formed distal portion that takes on a curved outer shape when relaxed.

1. Sheath hub for an introducer of a delivery system for a vascular closure device. 1.1) Perspective view; 1.2) Perspective view; 1.3) Perspective view; 1.4) Perspective view; 1.5) Top view; 1.6) Bottom view; 1.7) Left side view; 1.8) Right side view; 1.9) Front view; 1.10) Rear view.

A vascular closure device for achieving substantially immediate hemostasis at a puncture site in a vascular wall, comprising: an endovascular anchor having one or more suture attachment points; the blood vessel outer cap is provided with a tube cavity; a sealant; and a suture connected to at least one of the one or more suture attachment points of the endovascular anchor and passing through the lumen of the extravascular cap, where each of the endovascular anchor, the extravascular cap, the sealant, and the suture is made of a bioabsorbable material. A delivery system for delivering such a vascular closure device is also disclosed.

The utility model provides a blood vessel closing device which comprises a base body, a rotary knob and a pressure detection unit. The base body is provided with a first suture channel and a knob accommodating cavity, and the first suture channel penetrates through and communicates with the knob accommodating cavity; the knob is provided with a second suture channel, the knob is rotatably arranged in the knob containing cavity around the rotating axis, and a gap is formed between the knob and the cavity wall of the knob containing cavity; when the knob is located at the initial position, the second suture channel is communicated and aligned with the first suture channel, and the suture is allowed to movably penetrate through; the knob is configured to drive the suture in the second suture channel and the suture in the first suture channel to be staggered when rotating from the initial position to the locking position, so that the suture is pulled to enter the gap to form drawing of the suture; the base body presses a target tissue under the drawing action of the suture; and when the knob rotates from the initial position to the locking position, the pressure detection unit is directly or intermittently extruded by the suture, so that the pressure of the matrix on the target tissue is obtained.

The invention provides a novel percutaneous blood vessel closing device, which relates to the technical field of medical instruments and comprises a multi-cavity tube with a guide wire channel and a plurality of cavities, a bendable guide tube, a fixing piece with an anchoring structure and a degradable suture with a fishing knot. According to the device, the fixing piece is anchored to the surrounding tissue of the blood vessel wall through percutaneous puncture, the suture loop is used for pulling and pressing the blood vessel to achieve closing, through the synergistic effect of the anchoring structure of the fixing piece (a rivet, a self-locking clamp and the like) and the suture loop, uniform and continuous pressing force can be formed, and the closing effect on the gross vein is more reliable especially; the fishing knot design further prevents the suture from loosening, solves the problems of large trauma in the traditional operation and insufficient closing force and limited adaptability of the existing minimally invasive technology, and has the advantages of minimally invasive surgery, low infection risk, simplicity and convenience in operation and adaptation to different blood vessel diameters.

1. Sheath hub for an introducer of a delivery system for a vascular closure device. 1.1) Perspective view; 1.2) Perspective view; 1.3) Perspective view; 1.4) Perspective view; 1.5) Top view; 1.6) Bottom view; 1.7) Left side view; 1.8) Right side view; 1.9) Front view; 1.10) Rear view.

A vascular closure device is configured to seal a perforation in an artery or vein. The vascular closure device includes a deployment assembly having a proximal end and a distal end opposite the proximal end, a suture carried by the deployment assembly, and a backing plate carried by the deployment assembly and coupled to the suture. The backing plate is configured to exit the distal end of the deployment assembly for deployment in the aperture. The vascular closure device includes a retraction assembly coupled to a backing plate, the retraction assembly configured to retract the backing plate in a proximal direction after deployment of the backing plate.

The present invention relates to a vascular closure device, comprising: an outer tube, which extends along a longitudinal axis; a sealant, which is arranged on a distal side in the outer tube; a push tube, which is slidably arranged in the outer tube, a distal side of the push tube being close to the sealant; a connecting rod assembly, which comprises a central rod, a pull rod and a push rod, wherein two end portions of the pull rod are respectively rotatably connected to one end of the central rod and the outer tube, and two end portions of the push rod are respectively rotatably connected to the other end of the central rod and the push tube; and the movement of the central rod can drive the outer tube and the push tube to move towards each other so as to push the sealant out of the outer tube to release the sealant. The vascular closure device is simple to operate and has a good hemostatic effect.

A vascular closure assembly may include an actuator assembly having a chassis portion and an elongated housing having a proximal end secured to a distal end of the chassis portion, a distal end distal from the chassis portion, a distal section, and a plurality of anchor deployer lumens. Each anchor deployer lumen extends in an axial direction of the elongated housing or in other suitable path and terminates distally at a distal port disposed in a distal section of the elongated housing. The actuator assembly may also include a plurality of anchor deployers, each anchor deployer slidably disposed within a corresponding anchor deployer lumen of the elongated housing. Each anchor deployer may include a deployment rod having an elongate resilient configuration and a preformed distal section that assumes a curved profile when in a relaxed state.

The invention discloses a blood vessel closing device which comprises an anchoring piece located in a blood vessel inner cavity, a fixing piece located outside a blood vessel wall and a connecting piece penetrating through the blood vessel wall to pull the anchoring piece and the fixing piece to be close to each other to close an opening of the blood vessel wall in the using state. The anchoring piece comprises a base body and a coating which is attached to the surface of the base body and used for making direct contact with the blood vessel wall, the base body is made of an acellular matrix, and the coating is made of collagen or gelatin. According to the blood vessel closing device, the anchoring piece and the blood vessel wall have good attaching sealing performance, meanwhile, bleeding can be stopped instantly, degradation is achieved in a slow enzymolysis mode, and the use safety is better.

A vascular closure device configured to seal a perforation in an artery or vein includes a suture and a backing plate coupled to the suture. The backing plate is configured for deployment in a lumen of an artery or vein. The vascular closure device further includes a sealing plug movably coupled to the suture. The sealing plug has a front side end, a trailing side end, and a side surface extending from the front side end toward the trailing side end. The vascular closure device further includes a retraction element positioned on the sealing plug. The vascular closure device further includes a tether coupled to the retraction element. When the sealing plug is external to the deployment assembly, tension applied to the tether pulls the retraction element in the proximal direction to move the sealing plug in the proximal direction.

A vascular closure device includes a release component, a delivery component, a sealing device and at least one actuator. The release component is elongate along a longitudinal direction, and defines a distal end and a proximal end. The delivery component extends along the release component such that at least the release component is movable relative to the delivery component. The delivery component includes a delivery tube body and defines a delivery tube channel. The sealing device has a toggle that is at least partially disposed within the release tube, a suture that is attached to the toggle and extends through the delivery tube channel, and a plug that is attached to the suture proximal to the toggle. The actuator is coupled to the release component and is in communication with the suture such that actuation of the actuator causes (i) the release component to move the proximal direction relative to the delivery component so as to release the toggle from the release component, and (ii) the suture to be pulled in a proximal direction to thereby place the filament in tension and urge the toggle against a distal end of the delivery component such that the toggle is oriented in a sealing position.

A method is provided for operating a vascular closure device assembly that includes a sheath having a sheath main body defining a beveled distal end and a sheath mounting portion, a housing within which the sheath mounting portion is disposed, and a dilator engaging the sheath through the housing. The method includes: inserting at least a portion of the dilator into the housing such that the dilator moves the sheath into a first configuration in which a tip of the beveled distal end is located on a side corresponding to a side of a vessel in which an opening is located; inserting the tip into the vessel; and displacing the dilator axially away from the housing such that the dilator causes the sheath to rotate move into a second configuration in which the tip of the beveled distal end is located on a side opposite the side of the vessel.

The utility model provides a blood vessel closing device which comprises a base body and a knob. The base body is provided with a first suture channel arranged in the first direction and a knob containing cavity arranged in the second direction, and the first suture channel penetrates through and communicates with the knob containing cavity. The knob is provided with a second suture channel, the knob is rotatably arranged in the knob containing cavity around a rotating axis extending in the second direction, and a gap is formed between the knob and the cavity wall of the knob containing cavity; when the knob is located at the initial position, the second suture channel is aligned with the first suture channel in a penetrating manner, and a suture is allowed to movably penetrate through the first suture channel and the second suture channel which are aligned in a penetrating manner; the knob is configured to drive the suture in the second suture channel and the suture in the first suture channel to be staggered when rotating from the initial position to the locking position, so that the suture is pulled to enter the gap to form drawing of the suture; the base body is configured to compress the target tissue under the pulling action of the suture.

Handle of a delivery system for a vascular closure device. 1.1) Perspective view; 1.2) Perspective view; 1.3) Perspective view; 1.4) Perspective view; 1.5) Top view; 1.6) Bottom view; 1.7) Left side view; 1.8) Right side view; 1.9) Front view; 1.10) Rear view.