10 results about "Embolization coil" patented technology

An embolic coil implant system is provided that includes a microcoil having a portion that includes one or more sets of rings. The rings of each of the one or more groups continuously intersect one another in one cycle, collectively forming a three-dimensional shape. A shape setting device includes a three-dimensional (3D) body having a curved surface and a plurality of winding members extending from the curved surface of the 3D body and arranged in a plurality of groups. The winding members of each of the plurality of groups are configured to allow the microcoils to be wound to form loops, and adjacent groups of the winding members share the winding members to allow the loops formed by the adjacent groups to cross each other. A method of manufacturing an embolic device is also provided.

An embolic coil implantation system is provided, including a microcoil having a portion comprising one or more sets of loops. The loops of each of the one or more sets continuously intersect one another in a cycle, collectively forming a three-dimensional shape. A shape setting device includes a three-dimensional (3D) body having a curved surface and a plurality of winding members extending from the curved surface of the 3D body and arranged in a plurality of sets. The winding members of each of the plurality of sets are configured to allow the microcoil to be wound to form loops, and adjacent sets of winding members share winding members to allow loops formed by the adjacent sets to cross one another. A method of manufacturing an embolic device is also provided.

The utility model relates to an embolism spring ring structure which comprises a conveying rod and a spring, two connecting pieces are installed at the end, facing the conveying rod, of the spring, inserting grooves are formed in the connecting pieces, a push rod is inserted into the conveying rod, a guide rod is installed at the end, facing the spring, of the push rod, and an air bag is installed on the outer surface of the guide rod through an inflation and deflation mechanism. Movable plates are connected to the upper side and the lower side of the outer surface of the air bag, and inserting blocks matched with the inserting grooves are arranged on the outer surfaces of the movable plates. The inside of the air bag is inflated and deflated through the inflation and deflation mechanism, so that the insertion block can be driven to ascend and descend, when the insertion block is inserted into the insertion groove, the spring can be fixed, the situation that the spring loosens and shifts in the operation process is avoided, potential safety hazards are eradicated, and when the insertion block is pulled out of the insertion groove, fixation of the spring can be relieved. And the materials are pushed into the conveying rod through the push rod to complete separation.

The invention provides an embolism spring coil system which comprises a conveying device and a spring coil, the conveying device comprises a conveying pipe and a guide wire arranged in the conveying pipe, the conveying pipe is provided with a cavity, the cavity comprises a first cavity body and a second cavity body located at the far end of the first cavity body, and the second cavity body is provided with a partition part to divide the second cavity body into a first channel and a second channel; the spring ring device comprises a spring ring and an anti-unwinding wire arranged in the spring ring, the far end of the anti-unwinding wire is fixedly connected with the far end of the spring ring, a rope sleeve is arranged at the near end of the anti-unwinding wire, the rope sleeve penetrates through the first channel and extends into the first cavity, and the guide wire sequentially penetrates through the rope sleeve and the second channel. The rope sleeve of the anti-unwinding wire penetrates through the first channel and is arranged on the guide wire in a sleeving mode, so that stable connection of the conveying device and the spring ring device is achieved, the locking state can be kept even if the conveying device passes through a bent blood vessel, the situation of mistaken unwinding is avoided, the surgical risk and the operation difficulty are reduced, and the working efficiency is improved. And meanwhile, the spring ring can be reliably released through the arrangement of the anti-unwinding wire.

The present invention relates to a medical Pt alloy comprising a Pt alloy containing a metal M. In the Pt alloy according to the present invention, the metal M contains at least one of 6-11 at% of Ti, 3.5-9 at% of Zr, 5-11 at% of Nb, 6-16 at% of Mo, 4-9 at% of Hf, and 5-10 at% of Ta. The Pt alloy comprises the metal M with a total content of 3.5-18 at%, with the balance being Pt and inevitable impurities. The medical Pt alloy of the present invention has biocompatibility and X-ray visibility and also has good mechanical properties and workability. The medical Pt alloy of the present invention is formed into a medical member in the form of a Pt alloy wire rod or another form and then applied to medical devices such as embolization coils, guide wires, stents, and catheters.

The utility model discloses an aneurysm embolism device which comprises a micro catheter, a micro guide wire and a spring ring, the micro guide wire is inserted into a catheter cavity of the micro catheter in a penetrating mode, and the micro guide wire conveys and guides the micro catheter so as to guide the micro catheter to be inserted into an aneurysm. The spring ring is pushed into the aneurysm from a tube cavity of the micro catheter, the embolism device further comprises a flow velocity sensor used for measuring the flow velocity of blood flow in the aneurysm, and the flow velocity sensor is arranged on the micro catheter or the micro guide wire and located at the end, close to the aneurysm, of the micro catheter or the micro guide wire. According to the aneurysm embolization device, in the process of embolizing the spring ring, the blood flow speed in the aneurysm can be monitored through the flow speed sensor, so that a doctor is assisted in judging whether the spring ring needs to be continuously embolized or not and evaluating the placing effect of the spring ring, it is guaranteed that the aneurysm is effectively treated, meanwhile, excessive treatment can be reduced, and the operation accuracy is improved.

The invention provides a blood vessel occlusion stent, and belongs to the technical field of medical instruments. The blood vessel blocking stent comprises a stent body, a blood coagulation promoting component and a conveying unit, the stent body is of a cage-shaped structure, is formed by weaving metal wires, has a radial contraction state and an expansion state and is used for conforming to and blocking a target blood vessel in the expansion state, and a flow blocking unit is arranged in the stent body in the direction perpendicular to the axial direction. The blood flow blocking module is used for blocking blood flow; the blood coagulation promoting part is arranged in the stent main body to accelerate blood coagulation near the stent main body; the conveying unit is used for conveying the stent main body to a target position in a blood vessel; during working, the conveying unit conveys the stent body in a contracted state to a target position and then withdraws, and the stent body automatically expands to block blood vessels so as to block blood flow; the plug spring ring is mainly used for solving the technical problem that an existing plug spring ring cannot achieve immediate plugging.

The present invention relates to a medical Pt alloy formed from a Pt alloy containing Pt as a main component. The Pt alloy according to the present invention is a medical Pt alloy comprising a PtRe alloy containing 6.5-16.64 at% of Re with the balance being Pt and inevitable impurities. The medical Pt alloy of the present invention has biocompatibility and X-ray visibility and also has good mechanical properties and workability. The medical Pt alloy of the present invention is formed into a medical member in the form of a Pt alloy wire rod or another form and then applied to medical devices such as embolization coils, guide wires, stents, and catheters.

The invention discloses an embolism spring ring delivery device and a release method, and belongs to the technical field of medical instruments. The device comprises a developing spring ring, a release wire, a central rod and a conveying pipe, a deformable V-shaped structure is formed at the far end of the center rod, a first matching part is arranged on the V-shaped structure, and a second matching part is formed at the tail end of the releasing wire. In a conveying state, the conveying pipe moves towards the far end and restrains the V-shaped structure to be closed, so that the first matching part and the second matching part are jointed and locked; and in the disengagement state, the conveying pipe retracts towards the near end, constraint on the V-shaped structure is relieved, the V-shaped structure recovers to be opened, and the first matching part is separated from the second matching part. Locking and quick release of the spring ring are achieved through a pure mechanical structure, side effects caused by electrolytic release or hot melting release are effectively avoided, the device has the advantages of being simple in structure, stable in operation, high in safety, short in release time and the like, and the operation efficiency is remarkably improved.

The invention discloses an embolism spring coil, an embolism spring coil assembly and a multi-coil needle, and belongs to the technical field of medical instruments.The embolism spring coil comprises at least one first spring coil and at least one second spring coil, and the first spring coil is formed by spirally winding a first wire; the second spring ring is formed by spirally winding a second wire; the rigidity of the first wire is larger than that of the second wire. The first spring ring with the large rigidity is used for supporting, the second spring ring with the low rigidity is used for filling, and through cooperation of the first spring ring and the second spring ring which are different in rigidity, high-density filling can be achieved, and the risk of ectopic embolism is effectively reduced.