39 results about "Vessel dilator" patented technology

A vascular interventional device may be introduced over a guidewire into a vessel of the cardiovascular system of a patient. This device includes a hollow, flexible tube having a proximal end and a distal end that is adapted to selectively engage a target vessel of the cardiovascular system of the patient. This tube also includes a lumen that is continuous from the proximal to the distal end, and has an end hole in the distal end that is in fluid communication with the lumen. A plurality of side holes are provided near the distal end of the tube, each of which is in continuous fluid communication with the lumen. The device also includes a hollow vessel dilator that is adapted for insertion into and through the tube and over the guidewire. The dilator has an inside diameter that is slightly larger than the guidewire and an outside diameter that is slightly smaller than the diameter of the lumen of the tube. The distal end of the dilator is adapted to accommodate vascular entry over the guidewire, and the dilator is adapted to dilate the vessel to accept the tube. The device also includes a hub at the proximal end of the tube. The hub includes an end port through which a second interventional device having an outside diameter smaller than the diameter of the lumen may be introduced into the lumen of the tube. The hub also includes a side port through which a fluid agent may be injected for delivery through the lumen and out the end hole and side holes of the tube. A sealing mechanism is also provided in the hub to prevent air from entering the tube and blood and other fluids from leaking out of the tube through the hub. A pair of vascular interventional devices, at least one of which is constructed according to the invention, may be utilized to treat or study a cardiovascular condition, or to measure the blood pressure across a vascular segment.

A vascular interventional device may be introduced over a guidewire into a vessel of the cardiovascular system of a patient. This device includes a hollow, flexible tube having a proximal end and a distal end that is adapted to selectively engage a target vessel of the cardiovascular system of the patient. This tube also includes a lumen that is continuous from the proximal to the distal end, and has an end hole in the distal end that is in fluid communication with the lumen. The device also includes a hollow vessel dilator that is adapted for insertion into and through the tube and over the guidewire. The dilator has an inside diameter that is slightly larger than the guidewire and an outside diameter that is slightly smaller than the diameter of the lumen of the tube. The distal end of the dilator is adapted to accommodate vascular entry over the guidewire, and the dilator is adapted to dilate the vessel to accept the tube. The device also includes a hub at the proximal end of the tube. The hub includes an end port through which a second interventional device having an outside diameter smaller than the diameter of the lumen may be introduced into the lumen of the tube. The hub also includes a side port through which a fluid agent may be injected for delivery through the lumen and out the end hole of the tube. A sealing mechanism is also provided in the hub to prevent air from entering the tube and blood and other fluids from leaking out of the tube through the hub. A pair of vascular interventional devices, at least one of which is constructed according to the invention, may be utilized to treat or study a cardiovascular condition, or to measure the blood pressure across a vascular segment.

A telescoping dilator assembly is configured for percutaneous insertion of large diameter intravascular devices into a blood vessel while avoiding kinking of a guidewire and minimizing blood loss. The assembly includes a first smaller diameter dilator with an inner lumen that fits snugly over a guidewire. The smaller dilator may be tapered on both ends. A second larger diameter dilator is configured to slide over the first smaller dilator. A tear away sheath is configured to slide over the dilators and into a blood vessel. A tear away sheath plug is configured to form a seal at a proximal end of the sheath. When the dilators are removed from the blood vessel, an intravascular device may be passed through the sheath into the blood vessel.

A vascular suturing device is disclosed which includes an elongated tubular body defining opposed proximal and distal end portions and having a longitudinal axis extending therethrough, the body including an inner tubular member, an outer tubular member and a central tubular member disposed between the inner and outer tubular members. The inner tubular member and the central tubular member are mounted for movement relative to the outer tubular member about the longitudinal axis of the body for sequentially driving a pair of suture needles through the wall of a blood vessel to close an incision formed therein. A vascular dilator having a tapered distal tip portion is supported within the inner tubular member and is dimensioned to extend beyond the distal end of the inner tubular member for positioning the suturing device at the incision in the wall of the blood vessel. The dilator is configured to direct blood flow from the distal portion of the dilator to a location remote from the blood vessel for observation to confirm the location of the device.

A vessel access and closure device places a running suture in the wall of a blood vessel using a rotating helical suture needle that carries the suture along a helical path passing through the vessel wall, then reverses rotation to release a suture anchor attached to the distal end of the suture. A loose helical coil of suture is left behind as the helical suture needle withdraws. The device is withdrawn and replaced with a vessel dilator and an introducer sheath that opens up a larger access opening into the blood vessel and creates a pathway that passes though the helical coil of suture for introducing an interventional device into the blood vessel. After the interventional procedure is completed, the interventional device and the introducer sheath are withdrawn and the running suture is tightened and secured with a suture lock to close the access opening into the vessel.

A vascular suturing device is disclosed which includes an elongated tubular body defining opposed proximal and distal end portions and having a longitudinal axis extending therethrough, the body including an inner tubular member, an outer tubular member and a central tubular member disposed between the inner and outer tubular members. The inner tubular member and the central tubular member are mounted for movement relative to the outer tubular member about the longitudinal axis of the body for sequentially driving a pair of suture needles through the wall of a blood vessel to close an incision formed therein. A vascular dilator having a tapered distal tip portion is slidably supported within the inner tubular member and is dimensioned to extend beyond the distal end of the inner tubular member for positioning the suturing device at the incision in the wall of the blood vessel. The dilator is configured to move axially between an extended position and a retracted position. A biasing element and a retaining pin are associated with a proximal end of the dilator. The biasing element is adapted and configured for urging the dilator in the retracted position and the retaining pin is position so as to secure the dilator in the extended position.

A vascular dilator for controlling blood flow in a blood vessel, includes an elongate body for inserting into a blood vessel and a generally tapered distal end portion and a proximal end portion, and a plurality of inflatable members positioned adjacent the distal end portion. The inflatable members are longitudinally spaced from one another by a predetermined distance.

A method for treating a patient suffering from a wound, ulcer, or inflammation includes providing a topical formulation comprising a carrier and a combination of active ingredients that includes at least one retinoid and at least one blood vessel dilator, and applying the topical formulation to the skin of the patient to cause healing, accelerated healing or prevention of the wound, ulcer or inflammation. Additional active ingredients may include a promoter of mitochondrial function or an antioxidant.

The present invention relates to a method of treating congestive heart failure (CHF) in a subject comprising administering a peptide derived from atrial natriuretic peptide (ANP) prohormone (eg vessel dilator; VSDL) or a mimetic thereof. In a particular application, the invention provides a method of treating the particular indication known as acute decompensated congestive heart failure (ADCHF). Devices for intravenous or subcutaneous infusion for use in the method of the invention are also disclosed.

The invention relates to an anti-injury medical vessel dilator and simulation method of hemangiectasis. The anti-injury medical vessel dilator comprises a flexible catheter, an injector connector arranged at the inlet end of the flexible catheter and a conical part at the outlet end of the flexible catheter; the injector connector, the flexible catheter and the conical part are connected orderly,the conical part is a hollow conical pipe; diameter of the conical part is gradually enlarged from the free end of the conical part to the joint of the flexible catheter; multiple guide flow holes arearranged on the side wall of the conical part. The invention solves the technical problems that the hemangiectasis section applied to the operation process of autologous internal arteriovenous fistula plasty at present is poor in dilating effect, easy to cause blood vessel injury, and low in operation success rate. The vessel dilator provided by the invention can rapidly dilate operation vessel and not damage blood vessels during the operation process.

The invention belongs to the technical field of medical instruments, and particularly relates to a puncture needle suite assembly and a using method thereof.The puncture needle suite assembly comprises a puncture needle suite assembly body and a hose, the puncture needle suite assembly body is composed of a puncture sheath, a blood vessel dilator, an obturator, a miniature guide wire and a puncture needle, and a third hollow pipe is fixedly installed at one end of the hose; a first hollow tube is fixedly installed on the inner wall of the top end of the puncture needle, the inner wall of the first hollow tube is detachably connected with a third hollow tube through a fixing structure, and a sealing structure is arranged at one end of the puncture needle. Compared with the prior art, the tail end of the puncture needle is prevented from being injected into a contrast agent, so that the phenomenon that the puncture needle moves is avoided, and the situation that blood cannot be seen after blood return is punctured is avoided, so that great convenience is brought to medical staff.

The invention relates to a medical instrument, in particular to a vascular dilator implanting tool with a locking mechanism, comprising a handle and a push rod inserted into the handle and that can axially move. The rear end of the push rod is provided with a press plate and sleeved with a spiral sleeve, the spiral sleeve is made by spiraling a deformed single wire, the upper and lower ends of the section of the deformed single wire are symmetrically provided with an upper clamping thread and a lower clamping thread, one end of the deformed single wire is fixedly connected to the front end of the push rod, and the other end of the deformed single wire is fixedly connected to the handle. This tool is simple in structure, convenient to operate and widely applicable.

The invention discloses a medical surgery implant device of a vessel dilator. The device comprises a shaft rod and a plurality of sleeve plates, wherein the shaft rod is sleeved with the sleeve plates, an operation end of the shaft rod is sleeved with a shaft sleeve, the end face, close to the sleeve plates, of the shaft sleeve is provided with at least one control rod along an axial direction ofthe shaft sleeve, the control rod is provided with a detachable rotation supporting rod, same side faces of the sleeve plates are provided with baffle rings, the outer diameters of the baffle rings are the same as those of the sleeve plates, and each sleeve plate comprises an inner plate and an outer plate arranged on the periphery of the corresponding inner plate. The invention aims for providingthe medical surgery implant device of the vessel dilator capable of being operated in surgeries and an operation method thereof.