2387results about "Occulders" patented technology

Methods and system for atrial fibrillation ablations and other cardiac procedures utilizes a cardiac mapping system for navigation and guidance, and includes an additional virtual reality (VR) system and an augmented reality (AR) or mixed reality (MR) system. The Cardiac mapping system utilizes medical images and patient's electrical signals. The virtual reality (VR) system is utilized pre-procedure for visualization and pre-procedure planning. The augmented reality (AR) or mixed reality (MR) system is utilized pre-procedure or intra-procedure. Methods and system are disclosed utilizing pre-built virtual device models which interact with 3D volume rendered structures from patient's CT or MRI of the region of interest (ROI) for the different type of cardiac procedure. With virtual reality (VR) the operator utilizes hand-held sensors. With augmented reality (AR) or mixed reality (MR) a combination of hand gestures and an X-box controller is used to manipulate virtual devices, anatomical structures in the Hologram.

A thrombectomy device including a delivery catheter; a tapered dilator catheter configured to be movably disposed within the delivery catheter; and an expandable aspiration funnel configured to be movably disposed within the delivery catheter in a retracted position and at least partially outside the delivery catheter in an extended position, the funnel comprising a non-permeable covering, a diameter of a distal end of the funnel being greater in the extended position than in the retracted position, the funnel being configured to adapt its shape and length to a surrounding blood vessel such that the funnel lengthens as it narrows to retain a thrombus within the funnel. The invention also includes methods of using the device.

The invention discloses a rigidity self-adaptive intravascular stent based on a three-dimensional virtual woven structure and a control method thereof. The method comprises the steps of reconstructing a preoperative tumor blood vessel three-dimensional model based on clinical iconography data, constructing a stent initialization model, starting a hexagonal knitting three-dimensional virtual algorithm, performing intravascular stent knitting modeling, realizing structural parameter optimization and adaptive stent expansion in combination with preoperative image data of a patient, and completing personalized deployment. The wire winding angle and the mesh density of each area of the stent are adjustable, the stent is adaptive to the complex intracranial aneurysm blood vessel form, accurate fitting and risk guiding are achieved, the treatment effect is improved, the postoperative complication risk is reduced, and the stent has good engineering suitability and clinical application prospects.

The invention provides a blood vessel occluder, and belongs to the technical field of interventional surgical instruments.The occluder comprises an occluding inner disc, an occluding outer disc, a containing component and a driving component, the occluding inner disc and the occluding outer disc are connected in a spaced mode and are each provided with a supporting framework capable of being expanded or contracted in the radial direction, and the supporting frameworks are made of absorbable materials; the plugging inner disc is expanded to plug the inner side of the puncture opening after entering the puncture opening in a contraction state, and the plugging outer disc is expanded to plug the outer side of the puncture opening; the accommodating part is used for accommodating hemostatic gel; the driving part is used for reducing the volume of the accommodating part so as to push the hemostatic gel between the plugging inner disc and the plugging outer disc; the technical problems that in the prior art, a blood vessel plugging device is narrow in puncture port application range, limited in hemostatic effect and incapable of being attached to a puncture port, and follow-up inspection is affected due to metal residues are mainly solved.

A catheter system can include a tubular body, and at least one of a targeting system coupled to the tubular body, an expandable member, or a fluid injection port. A method of identifying a bifurcation can include inserting a catheter system into a first vessel, positioning the catheter system at a first location, expanding an expandable member to occlude the first vessel, delivering contrast material so the contrast material pooling proximate to the expandable member, and reviewing a shape of the contrast material in the first vessel under fluoroscopy.

An atraumatic vessel occlusive system includes a flexible tubular member with an infusion lumen, a vessel occluder mounted at the distal end of the tubular member, and a pressure sensor located within a chamber defined by the occluder. The occluder has a braided construct provided with a fluid impermeable membrane over its proximal portion and a fluid permeable covering over its distal portion. The pressure sensor is adapted to sense pressure within the vessel through the fluid permeable membrane without being subject to the effects of turbulent flow at the exit of the infusion lumen. The accurately sensed pressure can be used to determine a dwell time for the occluder.

The invention provides an intravascular occluder which comprises an occluder body, a catheter part and a control mechanism, the occluder body is of an umbrella-shaped structure formed by a plurality of frameworks which can be opened, and a layer of covering is attached to the occluder body; the catheter part is used for accommodating the plugging device and the connecting rod part of the control mechanism; the control mechanism comprises a connecting rod part and a handle control part, and is used for controlling the pushing and withdrawing of the plugging device; after the plugging device is unfolded to completely plug the inner diameter of the blood vessel, the function of cutting off blood flowing can be achieved, a space for blood flowing can be reserved at the position close to the inner wall of the blood vessel by properly retracting the plugging device into the catheter, and the plugging device can be completely retracted into the catheter by completely retracting the plugging device. The device has the advantages that unfolding and folding are completely reversible, controllable opening and cutting of blood flow can be achieved, complications caused by long-time ischemia of blocked blood vessels can be avoided, and a long-time operation becomes possible.

The invention discloses a blocking sheathing canal device for bleeding in a robot bronchoscope operation and a bronchoscope system, and belongs to the technical field of medical instruments. The blocking sheathing canal device comprises a guide pipeline, a blocking balloon, a medium channel and a pressure device; a pipe cavity is formed in the guide pipeline, and the robot bronchoscope enters a focus position through the pipe cavity; the blocking balloon is arranged at the far end of the guiding pipeline, can expand and deform in the radial direction of the guiding pipeline in the pressure state and is used for blocking the bronchus or / and the lumen; the medium channel is arranged on the guide pipeline, the pressure device is communicated with the near end of the medium channel, and a pressure medium is injected into the plugging balloon through the medium channel; under the bleeding condition, the balloon can be rapidly inflated through the pressure device at the near end of the guide pipeline, so that the balloon is expanded and deformed to completely block the gap between the guide pipeline and the bronchus, the emergency bleeding in the robot bronchoscope operation is blocked, and the safety of the robot bronchoscope operation is improved; and popularization and application of the robot bronchoscope operation are promoted.

A catheter system can include a tubular body, and at least one of a targeting system coupled to the tubular body, an expandable member, or a fluid injection port. A method of identifying a bifurcation can include inserting a catheter system into a first vessel, positioning the catheter system at a first location, expanding an expandable member to occlude the first vessel, delivering contrast material so the contrast material pooling proximate to the expandable member, and reviewing a shape of the contrast material in the first vessel under fluoroscopy.

A catheter system (100) for treating a vascular lesion (106A) within or adjacent to a vessel wall (108A) of a blood vessel (108) within a body (107) of a patient (109) includes a catheter shaft (210); a handle assembly (228); and a source manifold (236). The handle assembly (228) is coupled to the catheter shaft (210). The handle assembly (228) includes an assembly housing (266). The handle assembly (228) is usable by a user to selectively position the catheter shaft (210) near the vascular lesion (106A). The source manifold (236) is coupled to the assembly housing (266). The source manifold (236) includes a manifold housing (282) having a catheter shaft port (264) that is configured to receive a portion of the catheter shaft (210) so that the catheter shaft (210) is coupled to the manifold housing (282).

An anti-hemorrhaging device includes an elongate body, a flexible looped segment, a shield, and an inflatable seal. The elongate body is configured to attach to a vacuum source. The flexible looped segment is attached to the elongate body includes a plurality of holes on an inner circumference thereof. The flexible looped segment is configured to be placed in a uterus. Activation of the vacuum source is configured to pull vacuum through the plurality of holes so as to collapse the uterus upon insertion of the elongate body into the uterus. The shield is folded around an exterior circumference of the looped portion and has edges that extend radially inwards relative to the flexible looped distal section. The shield is configured to prevent tissue from occluding the plurality of holes when vacuum is applied. The inflatable seal is attached to the elongate body and is configured to seal the uterus.

Neurovascular flow diverter and delivery systems, and methods of using the same are disclosed herein. The systems can include an introducer sheath, a catheter, a deployable flow diverter that can be contained in the introducer sheath or in the catheter, a core wire, and one or several deployment features coupled to the core wire and engaging the flow diverter. The deployment features can include one or more of a pusher, one or several friction bumps, one or several deployment coils, a claw mechanism, a self-expanding element, a supporting coil, a tip coil, and / or an atraumatic tip. One or more of the deployment features can be radiopaque.

The present invention is concerned with an endovascular occlusion device for use in occluding a lumen of the endovascular system to treat certain medical conditions such as vascular malformations, bleeding vessels or occluding vessels in order to induce tissue ischemia or necrosis, the occlusion device including a deformable sleeve displaceable between a collapsed state and an expanded state and a conical array of cantilevered arms extending from a distal end of the sleeve and converging towards distal tips such as to define a first haemostatic valve about the distal end of the sleeve. The distal end of the sleeve will be at least partially covered with a polymer fluid impermeable membrane in order to provide a seal to prevent fluid flow through the occlusion device. The internal valve will be haemostatic regardless of the initial direction of blood flow and will allow distal endovascular delivery of a surgical instrument such as a catheter that can be manipulated and used to deliver therapeutic agents such as liquid or small particle embolics.

The invention discloses a hemostasis device and a hemostasis method for an anorectal lacuna operation, and belongs to the technical field of medical instruments. The hemostasis device for the anorectal lacuna operation comprises a fixed tube, a movable tube is arranged in the fixed tube, the movable tube is connected with the fixed tube in a rotating and sliding mode, an expansion structure used for expanding anorectum is arranged on the upper portion of the movable tube, and an expander driving the expansion structure to expand or contract is arranged in the movable tube. The anorectum is expanded through the expansion structure, and hemostasis operation can be conveniently conducted on the anorectum; the inner tube and the outer tube are rotationally and slidably connected, so that the adaptability of the hemostasis device is improved; the hemostatic effect is improved through the hemostatic powder and the compression air bag. Therefore, by adopting the hemostasis device and the hemostasis method for the anorectal lacuna operation, the problems that an existing device is poor in adaptability and cannot effectively stop bleeding can be solved.

The invention discloses a liver, gall and pancreas clinical puncture sampling device in the technical field of medical instruments, which comprises a base, a mechanical arm is fixedly connected to the base, a puncture needle is arranged at the top end of the mechanical arm, a guide rail for mounting the puncture needle is fixedly connected to the top end of the mechanical arm, a pushing part is slidably matched with one side of the guide rail, and the puncture needle is fixedly connected with the pushing part. The base is further fixedly connected with a pump assembly and a fixed arm, the top end of the fixed arm is fixedly connected with a multi-mode integrated sensor, and the side wall of the fixed arm is fixedly connected with a controller. By integrating a plurality of functional layers, the puncture needle can achieve a plurality of functions in single puncture, the mechanical arm is controlled to guide the puncture process of the puncture needle and compensate respiratory movement displacement through model construction and displacement prediction of the controller, and bleeding stopping gel is sprayed in a self-adaptive mode through resistance borne during needle insertion, so that massive bleeding is avoided; therefore, the efficiency of the hepatobiliary pancreas puncture operation is improved, the possibility of tissue bleeding infection is reduced, and the painless treatment experience of a patient is improved.

This application describes various embodiments of an expandable device that includes at least one support member. The support member (or members) is integrated into the structure of the expandable device and increases its column strength, which thus augments pushability of the expanding device through a delivery catheter. The support member allows force applied while pushing from the proximal end of the expandable device to be translated to the distal end of the device and therefore avoid bunching or deformation without increasing the profile of the device to a degree that would prohibit passage through a lumen of a specific required size. Thus, the expandable devices described herein address at least some of the shortcomings discussed above.

The present invention provides a left atrial appendage occluder, comprising: a fixing disk, the fixing disk having a first connection structure, the first connection structure having a first threaded section; an occlusion disk, the occlusion disk having a second connection structure, the second connection structure having a second threaded section, both the first threaded section and the second threaded section having a thread structure and being threadedly engaged with each other, the occlusion disk further having a conveying thread for threadedly cooperating with a conveying steel cable, the rotation direction when tightening the thread structure being opposite to the rotation direction when tightening the conveying thread, the first connection structure and / or the second connection structure further including a moving section, after the first threaded section and the second threaded section are threadedly tightened to a preset distance, the first threaded section disengages from the second threaded section, and the second threaded section or the first threaded section cooperates with the moving section, and the fixing disk and the occlusion disk can axially move a predetermined distance along the moving section. The present invention solves the problem that the left atrial appendage occluder in the prior art is prone to loosening when connected and cooperated with the conveying steel cable.

Apparatus and methods are provided for closing a tubular structure within a patient's body. The apparatus includes a needle including a proximal end including a hub, a distal end including a sharpened distal tip, a lumen having an oblong cross-section extending proximally from the distal end, and defining a longitudinal axis between the proximal and distal ends, and a clip deliverable from the lumen. The clip is compressible between a relaxed state in which a plurality of tines of the clip are shaped to engage and close a tubular structure within a patient's body, and a stressed state in which the tines are compressed to allow the clip to be loaded into the. The apparatus may also include a pusher member for deploying the clip from the distal tip of the needle such that the tines engage and close a tubular structure through which the tubular member is directed.

An intracorporeal robot (1) for deployment in a body tract, comprising: - a permanent magnet constituting an effector magnet (2) configured to be guided by an extracorporeal actuating magnet (105), and - a medical device (3) coupled to the effector magnet, the medical device comprising a shape memory structure (4) configured for tetherless actuation by an extracorporeal shape memory actuator (105).

An orientable intravascular device having a “twelve o'clock” marker on a proximal and distal end for treating an aneurysm, including a packaging catheter with an identical fixed non-round shaped inner lumen, a pusher wire having an occlusion device releasably disposed on the distal end of said pusher wire, preloaded at a fixed circumferential orientation, with corresponding markers on the outside of said packaging catheter, a hub having an inner lumen that is shaped to marry with the outer lumen of the packaging catheter to deliver a delivery wire and occlusion stent in a predicted orientation, and maintaining such orientation as the wire and stent are advanced through said delivery catheter, and while said delivery catheter is withdrawn. Methods of using same are disclosed.

The invention discloses an occluder pushing mechanism and an occluder conveying and forming device.The occluder pushing mechanism comprises an occluder, a multi-cavity tube, a core rod, a forming pull wire and a tensioning wire, and the occluder conveying and forming device comprises the occluder pushing mechanism and a wire cutting handle. The thread trimming handle comprises a shell, a multi-cavity tube fixing ring, a thread leading device, a core rod sliding block, a thread locking assembly and a thread trimming assembly. According to the occluder conveying and forming device, the thread trimming handle and the occluder pushing mechanism are preassembled into a whole, the surgical operation process is optimized, the convenience and safety of surgical operation are remarkably improved, the thread trimming success rate is greatly increased, and smooth implementation of the surgery is guaranteed; meanwhile, connection between the thread trimming handle and the plugging device is established through the forming pull thread and the tensioning thread, the overall structural design is simplified, and surgical operation steps and potential risks are effectively reduced.

A system for delivering an implant device to a vascular site in a patient a delivery pusher apparatus, an implant device detachably connected to the delivery pusher apparatus by a tether having a distal end connected to a proximal end of the implant device, wherein the tether is substantially non-tensioned when connecting the implant device to the delivery pusher, and an electrical heating element configured coaxially around at least a portion of the tether, wherein heat generated by the heating element severs the tether at a point near the proximal end of the implant device.

Systems and methods are described for modulating blood flow through a blood vessel. Devices may include one or more implantable devices comprising an expandable frame comprising a proximal end and a distal end and a longitudinal axis extending therethrough; a membrane comprising an inflow end and an outflow end, wherein the inflow end is at least partially installed within the distal end of the expandable frame; an actuator coupled to a control wire, the control wire being coupled to a portion of the membrane; a first magnet configured to induce rotation of the actuator to actuate the control wire to activate application of tension to the control wire and cause the membrane to radially collapse at the outflow end; and a second magnet configured to generate a changing magnetic field pole direction to cause rotation of the first magnet to cause the membrane to radially expand at the outflow end.

An imaging system for a patient comprises an imaging probe. The imaging probe comprises: an elongate shaft for insertion into the patient and comprising a proximal end, a distal portion, and a lumen extending between the proximal end and the distal portion; a rotatable optical core comprising a proximal end and a distal end, the rotatable optical core configured to optically and mechanically connect with an interface unit; a probe connector positioned on the elongate shaft proximal end and surrounding at least a portion of the rotatable optical core and an optical assembly positioned in the elongate shaft distal portion and proximate the rotatable optical core distal end, the optical assembly configured to direct light to tissue and collect reflected light from the tissue. A shear-thinning fluid can be provided between the elongate shaft and the rotatable optical core, such as to reduce undesired rotational variations of the rotatable optical core.

The invention relates to the technical field of medical treatment, and discloses an intraperitoneal hepatic vein blood flow blocking device which comprises a drainage tension-brace mechanism, a hepatic vein blocking mechanism is arranged on the surface of the drainage tension-brace mechanism, a catheter recycling mechanism is arranged on the surface of the hepatic vein blocking mechanism, a hydraulic measuring mechanism is arranged at one end of the catheter recycling mechanism, and the hydraulic measuring mechanism is connected with the drainage tension-brace mechanism. And a normal saline injection mechanism is arranged at one end of the hydraulic measuring mechanism. According to the intraperitoneal hepatic vein blood flow blocking device, through the arrangement of the drainage pulling and supporting mechanism, the hepatic vein blocking mechanism, the catheter recycling mechanism, the hydraulic measuring mechanism and the normal saline pushing and injecting mechanism, the hepatic vein can be directly blocked through expansion of the hepatic vein blocking mechanism in the using process, and meanwhile it is guaranteed that the inferior vena cava blood flow can flow through a circulation cavity; therefore, smooth return blood circulation of the inferior vena cava is guaranteed.

A neurovascular catheter is provided, such as for distal neurovascular access or aspiration. The catheter includes an elongate flexible tubular body, having a proximal end, a distal end and a side wall defining a central lumen. The side wall includes a tubular inner liner, a tie layer separated from the central lumen by the inner liner, a helical coil at least partially overlapping the tie layer, and a tubular braid. A first section of adjacent windings of the helical coil can be spaced farther apart from each other than a second section of adjacent windings of the helical coil.

The invention provides a dynamic shaping method and system for a shaping wire, a medium and equipment, and relates to the technical field of image processing and medical instruments.The dynamic shaping method for the shaping wire comprises the steps that a first control signal is sent to the shaping equipment, the shaping equipment is controlled to start shaping operation, and the shaping wire which is output and not bent is formed; acquiring a first key point corresponding to the molding wire; on the basis of the first position where the first key point is currently located, whether the posture of the molded wire with the wire output needs to be corrected or not is judged in real time; if it is determined that the posture of the molding wire does not need to be corrected at present, the steps are repeatedly executed until molding of the molding wire is completed, multiple key points in the three-dimensional image are recognized, the length and the bending angle of the molding wire are sequentially and repeatedly corrected in real time according to the multiple key points, and a closed-loop system is formed; and finally, molding wires with accurate postures are obtained, so that the molding accuracy is greatly improved.

Pulmonary treatment devices, systems and methods of use are provided which take into account the vast tissue damage of advanced COPD sufferers and provide treatments designed specifically to treat the particularly compromised lung tissues that are present in these patients. These treatments reduce trapped air volume, tension lung tissue and enhance lung elastic recoil. In particular, a variety of embodiments of pulmonary treatment devices are provided. The devices are comprised of a shape memory material wherein the devices are able to be expanded under tension, and then are able to recoil back toward an original relaxed or resting shape as the devices are deployed into the tissue. This action causes the pulmonary treatment devices to corkscrew into damaged tissue, becoming sufficiently entwined to allow pulling of the tissue by retraction of the device. This in turn re-tensions the lung causing lung volume reduction.

Multiple anchors are transluminally slid distally over and along a first portion of a tether to a heart of a subject. The anchors are anchored to tissue of the heart, with the first portion of the tether extending transluminally to the heart. Within the heart, a bight of the tether is secured to the tissue by the anchors. A second portion of the tether extends from the bight to a second end of the tether. The first portion of the tether is subsequently slidably coupled to the second end of the tether such that the tether forms a closed loop. The tissue is subsequently reshaped by the loop being reduced in size by the first portion being slid through the slidable coupling. Other embodiments are also described.

The invention relates to the technical field of conveying of aneurysm embolism instruments, in particular to an implant conveying system which comprises a pushing tube, a conveying tube, a connecting tube and a connecting rod. One end of the conveying piece is connected with one end of the pushing pipe through a connecting spring; the conveying piece is provided with a conveying cavity and a positioning hole communicated with the conveying cavity; one end of the releasing wire sequentially penetrates through the pipe cavity, the inner space of the connecting spring and the conveying cavity into the positioning hole, and the other end of the releasing wire is arranged at the other end of the pushing pipe through a fixator; when the implant is conveyed, the tail ring of the implant is arranged in the conveying cavity, and one end of the release wire sequentially penetrates through the pipe cavity, the inner space of the connecting spring, the conveying cavity and the tail ring to enter the positioning hole; and the end, located in the positioning hole, of the release wire is pulled out through the fixator, so that the implant is released. The tail ring of the implant is limited by arranging the release wire in the positioning hole, so that the implant is convenient to convey. Not only is the operation of the implant in the releasing process simplified, but also the releasing stability is improved.