56 results about "Vascular 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.

A multi-friction dilator may be provided that includes a body having an outer surface extending from a proximal end to a distal tip, and having a first section, a second section, and a third section; wherein the second section is disposed between the first section and the third section; the outer surface in the first section includes a coating having a first coefficient of friction; the outer surface in the second section exhibits a second coefficient of friction greater than the first coefficient of friction, and the outer surface in the third section has a third coefficient of friction less than the second coefficient of friction.

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 disclosure relates to medical devices. More particularly, this disclosure describes a vascular device allowing large bore transseptal access with subsequent atrial re-access by preplacing closures / tissue approximating sutures prior to creating a septostomy. Generally, the device may include a delivery catheter for puncturing and cutting the interatrial septum. An anchor of the delivery catheter may secure the suture in an atrium to a septum wall, for example, the left atrium. Incisions may be made by an expandable cutting implement which may use mechanical or radio frequency (RF) energy without interfering with the suture. A therapeutic instrument may be advanced through the tissue plane after the incisions are made by the cutting implement. Closure of the incision may be performed with the previously placed sutures.

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.

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.

Vascular device loading may be provided by loading a first liquid having a first density into a vascular device hub having an internal volume flowably connected between a syringe port and a cannula port; connecting a first syringe loaded with a second liquid to the syringe port, wherein the second liquid has a second density different than the first density; orienting the first syringe at a first elevation relative to the vascular device hub to place a denser one of the first liquid and the second liquid below a less dense one of the first liquid and the second liquid; and injecting, from the first syringe into the vascular device hub, the second liquid to eject the first liquid from the vascular device hub via the cannula port.

Disclosed herein are medical systems, devices, and methods for performing vascular treatments and diagnoses. A vascular device include an optical fiber including a single fiber core disposed offset from a central axis of the optical fiber. The single fiber enables logic of the system to perform determine multiple conditions of the device and the patient. The conditions may include one or more of blood flow parameters, infusate delivery parameters, location of the device within the patient, pH of the blood, oxygen level of the blood, damage to the optical fiber, or core temperature of the patient. The elongate medical device may be a catheter, a stylet, a guidewire, or a probe.

Systems and methods described herein relate to developing a virtual anatomical model of a coronary artery with specific conditions and related fluid properties, such as the velocity and viscosity of selected fluid, to provide accurate parameters for an intravascular imaging procedure. The resulting parameters may relate to the contrast agent volume, time for pullback of intravascular tool, and contrast agent injection force. The models may be patient specific, based on characteristics of a patient's artery. The systems and methods may be utilized for PCI planning, vascular device design and process optimization.

A system for transesophageal echocardiogram-guided implantation of a valve device, the system including at least a transesophageal echocardiogram system configured to detect at least an ultrasound image and at least a computing device configured to receive at least an ultrasound image, generate at least a 3D cardiac model representative of a heart of the patient as a function of at least an ultrasound image wherein the at least an ultrasound image includes a two-dimensional image of the heart of the patient and wherein the 3D cardiac model includes a three dimensional interpolation of the two-dimensional image, determine a valve model datum as a function of the 3D cardiac model, receive at least valve model representative of at least a cardiovascular device to be placed within the patient as a function of the valve model datum and display the at least a 3D cardiac model and at least a valve model.

A medical device can include an elongate manipulation member, and a thrombectomy device connected to the elongate manipulation member. The thrombectomy device can have a first configuration and a second configuration, the thrombectomy device being expandable from the first configuration to the second configuration. The thrombectomy device can include an arcuate marker-mounting projection attached to a portion of the thrombectomy device configured to contact a thrombus. A marker can be coupled to, and extending around, the arcuate marker-mounting projection with the marker and the arcuate marker-mounting projection contacting each other at three discrete locations. A method for engaging a thrombus can include advancing a thrombectomy device to a location radially adjacent to a thrombus in a blood vessel. The thrombectomy device can be positioned such that a marker, disposed at a proximal end of a working length of thrombectomy device, is proximal to or longitudinally aligned with a proximal end of the thrombus, and can be expanded into the thrombus.

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.

In various examples, a skirt for creating a seal between an implantable vascular device and vascular anatomy of a patient includes a seamless tubular structure. The tubular structure is formed from a textile material. A plurality of protrusions extend radially outwardly from the tubular structure. The protrusions are formed within and integral with the tubular structure. Each protrusion including an initial shape, wherein the protrusions are configured to flatten with pressure applied in a radially inward direction with respect to the tubular structure and recoil with pressure at least partially removed to regain the initial shapes of the protrusions, such that the protrusions conform to the vascular anatomy to create the seal between the implantable vascular device and the vascular anatomy.

The present invention relates to medical devices. More specifically, the present invention describes a vascular device that allows large bore transseptal access with subsequent re-entry into the atrium by pre-placing a closure / tissue access suture prior to performing an atrial septostomy. Generally, the device can include a delivery catheter for puncturing and cutting the atrial septum. An anchor of the delivery catheter can secure the suture in the atrium to the septal wall, e.g., the left atrium. The incision can be formed by an expandable cutting tool that can use mechanical or radiofrequency (RF) energy without disturbing the suture. After the cutting tool forms the incision, a therapeutic device can be advanced through the tissue plane. The incision can be closed with the previously placed suture.

This utility model discloses a novel sheath, relating to the field of medical device technology. It includes an inner and outer tube body and a sheath. The tube body comprises an inner tube, a reinforcing layer, and an outer tube, sequentially arranged from the inside out. The outer tube includes multiple transition segments connected in series. From the distal end to the proximal end of the tube body, the hardness of the multiple transition segments increases sequentially. Each transition segment has a fusion-fitting portion at its end, where the fusion-fitting portions of any two adjacent transition segments interlock to form a transition zone. By providing fusion-fitting portions at the ends of the transition segments, any two adjacent transition segments can be fused together through the fusion-fitting portions, thereby balancing support and flexibility, ensuring smooth pushing of the sheath, and providing sufficient support to guide catheters or other vascular devices to the lesion area.

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.

The present disclosure relates to medical devices. More particularly, this disclosure describes a vascular device allowing large bore transseptal access with subsequent atrial re-access by preplacing closures / tissue approximating sutures prior to creating a septostomy. Generally, the device may include a delivery catheter for puncturing and cutting the interatrial septum. An anchor of the delivery catheter may secure the suture in an atrium to a septum wall, for example, the left atrium. Incisions may be made by an expandable cutting implement which may use mechanical or radio frequency (RF) energy without interfering with the suture. A therapeutic instrument may be advanced through the tissue plane after the incisions are made by the cutting implement. Closure of the incision may be performed with the previously placed sutures.

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 system for transesophageal echocardiogram-guided implantation of a valve device, the system including at least a transesophageal echocardiogram system configured to detect at least an ultrasound image and at least a computing device configured to receive at least an ultrasound image, generate at least a 3D cardiac model representative of a heart of the patient as a function of at least an ultrasound image wherein the at least an ultrasound image includes a two-dimensional image of the heart of the patient and wherein the 3D cardiac model includes a three dimensional interpolation of the two-dimensional image, determine a valve model datum as a function of the 3D cardiac model, receive at least valve model representative of at least a cardiovascular device to be placed within the patient as a function of the valve model datum and display the at least a 3D cardiac model and at least a valve model.

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.