69 results about "Endoclip" patented technology

Provided herein is a copolymer that includes a soft block (A) that contains poly(ester amide) (PEA) and a hard block (B). The copolymer can be any of AB, ABA or BAB type block copolymers. By varying the relative amount of the PEA block and the hard block, one can obtain a copolymer with a T_g for mechanical integrity in drug-delivery stent applications. The copolymer can be used alone or optionally in combination with a biobeneficial material and/or a biocompatible polymer to form an implantable device or a coating on an implantable device. When the copolymer is used in combination with a biobeneficial material, the copolymer and the biobeneficial material can be co-deposited or applied in sequence during the coating process. A coating formed of the copolymer may also include a bioactive agent. The implantable device can be implanted in a patient to treat, prevent, or ameliorate a disorder such as atherosclerosis, thrombosis, restenosis, hemorrhage, vascular dissection or perforation, vascular aneurysm, vulnerable plaque, chronic total occlusion, claudication, anastomotic proliferation for vein and artificial grafts, bile duct obstruction, ureter obstruction, and/or tumor obstruction.

An endoscope particularly suited for endocranial procedures and a method of using the endoscope. In some examples the endoscope is rigid except for a bend/tilt portion near a distal end of a rigid tube that is inserted in a patient's cranium, which distal end is controlled in a degree and direction of tilt with a finger operated controller at the endoscope's handle. Some examples use telescoping tubes that allow customizing the endoscope size for specific procedures. A distal portion of the endoscope can be disposable, supplied in a sterile package for a single procedure, thus taking into account contamination dangers that are particularly high for intracranial and certain other interventions and the fact that it can be difficult or impossible to effectively autoclave heat-sensitive components of certain endoscopes or effectively sterilize them using other techniques.

The invention discloses an indented balloon for vascular calcification plaques, which comprises a balloon body used for expanding a vascular wall; a indentation structure which is mounted on the outer surface of the balloon body, wherein the indentation structure comprises at least one indentation filament body, and the at least one indentation filament body is spirally arranged on the balloon body in a sleeving mode in the axial direction of the balloon body; in the radial direction of the balloon body, the free end of at least one indented filament body is spine-shaped; and in an expansion state, the free end of the indentation filament body is in contact with the calcified plaque. When the balloon body is conveyed to a calcified plaque lesion position, the spiral indented filament bodies can form a sliding effect, and the balloon body is promoted to smoothly pass through the calcified lesion position. The indented filaments on the outer surface of the balloon body are spiral, so that overhigh tension cannot be locally formed, the risk of complications such as vascular interlayer and vascular perforation is reduced, and the safety is improved. In addition, the free ends of the indentation filament bodies can generate impact force on the calcified plaque, so that the calcified plaque forms cracks and is separated from the blood vessel wall, and therefore, the treatment effect of the calcified plaque is improved.

This invention is directed to devices and methods for improving wound closures produced during endoscopic surgery. These methods are directed to delivering and applying a quantity of hemostatic agents in either powder, solid, liquid, or gel form onto an open wound produced e.g., by polyp removal, followed by the application of pressure. The method is implemented preferably using existing endoscopic equipment; however, modifications to existing endoscopic insertion tubes, application and tamping devices and endoscopic clips deployed from the distal end of the insertion tube during endoscopic surgery are also within the scope of this invention.

The invention discloses a vascular clamp. The vascular clamp comprises a first supporting portion, a second supporting portion, a first operating portion, a second operating portion, a first clampingportion, a second clamping portion and a deformation portion, wherein the first supporting portion and the second supporting portion are arranged in a separated mode; the first operating portion extends upwards from the first end of the first supporting portion, and the second operating portion extends upwards from the first end of the second supporting portion; the first clamping portion extendsupwards from the second end of the first supporting portion, and the second clamping portion extends upwards from the second end of the second supporting portion; the distance between the first clamping portion and/or the second supporting portion and a middle vertical plane between the first supporting portion and the second supporting portion is gradually increased upwards from the first supporting portion or the second supporting portion; and the deformation portion is connected with an extending end of the first clamping portion and an extending end of the second clamping portion, and thedeformation portion can be deformed by operating the operating portions. When the vascular clamp is used, the gravity center of the vascular clamp is lower than that of a blood vessel, tissue damage caused by pulling and twisting can be reduced, and the vascular clamp is suitable in size and does not occupy the view during operation.

The invention relates to a blood vessel holder which comprises a holder body; the holder body is cylindrical; an elastic clamping piece is fixedly connected to the outer side wall of the holder body;and a clamping opening capable of clamping a blood vessel is formed by the holder body and the elastic clamping piece. The blood vessel holder can well clamp a bridge blood vessel, and is easy to control and small in damage to the blood vessel.

The invention discloses an emergency hemostasis method and an emergency hemostasis device for vascular surgery. The method is mainly realized by the following methods: determining a blood vessel that needs hemostasis, puncturing a blood vessel wall of the blood vessel from a bleeding site, sending an inflatable balloon matching a diameter of the blood vessel into the blood vessel, and blocking a blood flow channel inside the blood vessel through the inflatable balloon, so as to achieve a purpose of blood vessel hemostasis; withdrawing gas from the inflatable balloon and withdrawing the inflatable balloon from the blood vessel after surgery. The invention further discloses an emergency hemostasis device suitable for the emergency hemostasis method. The emergency hemostasis device comprises a pressing structure, a positioning structure, an air compression structure, an outer sleeve, a balloon gas injection pipe and an inflation balloon. The method and device can complete two actions of needle tip recovery and balloon inflation at the same time; are simple to operate, convenient and quick to use, have good hemostasis effect, and have little damage to blood vessels, are particularly suitable for patients whose blood vessels are fragile and cannot be stopped by clamping and compression methods such as vascular clamps, and are also particularly suitable for hemostasis in emergencies that occur during surgery.

To provide suction forceps for endoscopic surgery which are capable of quickly aspirating a fluid such as blood or another body fluid without requiring reinsertion of a dedicated aspiration tube even when there is leakage of blood or another body fluid during surgery, and consequently, also make it possible to prevent the duration of surgery from lengthening. Thus, suction forceps for endoscopic surgery are provided which are equipped with: a hollow section formed in a body section; a gripping part which manages tissue during surgery, and is formed at the tip end of the body section on one side thereof; and a suction port which is formed so as to be connected to the hollow section, and aspirates body fluid that has leaked from the tissue or blood that was effused during the surgery.

The invention provides a recyclable vascular interlayer plugging device. The recyclable vascular interlayer plugging device comprises a bare stent and a flow blocking film. The bare stent comprises a stent body and a recovery body; the support body comprises a support body section, a first turnover section and a second turnover section, wherein the first turnover section and the second turnover section are connected to the two ends of the support body section respectively, the recovery body is connected to one end of the support body section, and the first turnover section and the second turnover section both face the outer side of the support body section and overturn towards the recovery body; the flow blocking film covers the stent main body section, the first turnover section and the second turnover section; the first turnover section and the second turnover section are supported on the blood vessel wall in the circumferential direction and located on the two sides of a crevasse of the blood vessel interlayer respectively to block the crevasse, and the recovery body is used for recycling the recyclable blood vessel interlayer blocking device. The recyclable vascular interlayer plugging device provided by the invention can block blood flow of a true cavity and a false cavity and promote thrombosis of the false cavity, is particularly suitable for plugging a far-end crevasse of a vascular interlayer, and is wide in application range; and moreover, the device can be recycled and taken out, so that in-vivo implants and complications are reduced.