12 results about "Vessel sealing" patented technology

A method for sealing a vessel includes supplying electrical energy to an ultrasonic surgical instrument having an end effector and a transducer coupled to the end effector, when the end effector is grasping a vessel, sensing parameters of the vessel when the end effector achieves a predetermined velocity, estimating a size of the vessel based on the sensed parameters, controlling the electrical energy based on maintaining a predetermined initial heating rate of heating the vessel until a predetermined amount of energy corresponding to the estimated size of the vessel has been delivered, and controlling the electrical energy based on a predetermined heating rate curve of heating the vessel after the predetermined amount of energy corresponding to the estimated size of the vessel has been delivered.

Vessel sealing instruments are provided that comprise an ultrasonic transducer having a reduced longitudinal length distal of the articulation wrist of the instrument to improve the maneuverability of the instrument within a tight surgical area, such as encountered during a laparoscopic procedure. The vessel sealing instruments may be particularly useful as part of a robotic-assisted surgical system. A vessel sealing instrument comprises a blade having a distal portion with a smaller sectional density than a proximal portion. This design minimizes the length of the blade, allowing the blade to be located distal of an articulation wrist, which avoids generating ultrasonic transducer vibrations through the wrist, thereby reducing the wear and tear on the instrument components.

The invention belongs to the technical field of surgical instruments, and particularly relates to a surgical operation blood vessel suturing device convenient to hold, which comprises a shell, a thread pushing rod, a threading assembly and a thread cutting assembly, the thread pushing rod is provided with a thread hole for a suture thread to penetrate in and out, the threading assembly comprises a connecting rod fixedly mounted on the shell, and a thread cutting assembly is arranged on the connecting rod; the wire pushing rod is mounted at the end part of the connecting rod; the cover plate is rotationally mounted on the wire pushing rod, and the cover plate and the wire pushing rod are combined to form a cylindrical structure with a hemispherical end part; through the arrangement of the threading assembly, threading does not need to be conducted by depending on a traditional stay wire rod, threading positioning can be completed only through the simple steps of opening the cover plate, embedding a suture line and closing the cover plate, repeated disassembly and assembly and precise insertion operation of the stay wire rod are omitted, the operation step of single-time suture is greatly reduced, handheld operation is facilitated, and the operation efficiency is improved. The device is especially suitable for multi-vessel suturing scenes, and the operation burden of doctors is remarkably reduced.

A tissue sealing and cutting instrument includes a jaw actuation handle movably coupled to the instrument body handle and configured to move a pair of opposing jaws disposed on a shaft extending from the instrument body from an open position to an approximate position for clamping tissue therebetween. A cutting member is disposed in the shaft in a retracted position, wherein the cutting member may be advanced distally to cut tissue clamped between the jaws by a cutting member translation assembly that includes a rack and pinion assembly mounted in the instrument body, wherein a portion of the jaw actuation handle interferes with and prevents rotation of the pinion, and corresponding distal advancement the cutting member, unless the jaw actuation handle is moved sufficiently towards the instrument body handle to move the pair of opposing jaws into the approximate position.

The utility model relates to the technical field of sealing components, and discloses a high-pressure container sealing mechanism which comprises a sealing container, the interior of the sealing container is communicated with a connecting pipeline extending to the outside of the sealing container, the interior of the connecting pipeline is fixedly connected with a sealing baffle ring, and the inner side of the connecting pipeline is fixedly provided with a connecting support. An elastic telescopic pushing piece is fixedly installed on the inner side of the connecting support, a sliding support is fixedly installed on the inner side of the connecting pipeline, and a sealing block making contact with the inner wall of the sealing baffle ring is slidably connected to the inner side of the sliding support. The outer portion of the connecting pipeline is connected with a pushing component through threads, the pushing component extends into the connecting pipeline and pushes the elastic telescopic pushing piece to act, and the inner wall of the connecting pipeline is provided with an extrusion elastic piece extruded with the sealing block. The sealing mechanism of the high-pressure container has the advantages that the rotating friction does not exist in the sealing piece in the pressure relief process, and the service life of the sealing piece is prolonged.

A seal assembly that seals opening in the wall of a blood vessel has a first sealing element for placing inside the lumen of the blood vessel and to engage the interior wall surface, a shaft integrally formed with the first sealing element and fixed in a predetermined configuration relative to the first sealing element, an outer floating element slidingly movable along the shaft; and a second sealing element, the second sealing element slidingly movable relative to the first sealing element along the shaft to engage the outer floating element and position the outer floating element against the exterior surface and the first sealing element against the interior surface of the blood vessel to seal the opening in the blood vessel.

A forceps system for sealing a blood vessel can include a first jaw and an opposing second jaw. At least one of the first and second jaws includes at least a first electrode having first and second electrode portions that are laterally separated to permit electrical isolation between the first and second electrode portions, and the first and second electrode portions are independently addressable to permit individual testing by the first and second electrodes portions of a blood vessel characteristic. This can help permit individual testing of each side of a target seal region of the blood vessel.

Electrical medical therapy systems, devices, and methods can employ “electrodes” that are galvanically isolated from target biologic tissue. An electric field can be generated in the biologic tissue via such electrically insulated and galvanically isolated electrodes. Further the electric field can be directionally varied, such as to form a Rotating Electric Field (REF), such that it can impact biological cells from different directions. Directional variation of the electric field can be obtain using a set of three (triad) or more electrodes, or multiple such sets or triads, and applying respective phase-delayed time-varying electric signals to corresponding individual electrodes in the triad or other set of galvanically isolated electrodes. Medical electrical REF therapies can include, among other things, at least one of cardioversion, defibrillation, pacing or other cardiac resynchronization, ablation, cautery, vessel sealing, or thermal sterilization.

To provide a forceps system for sealing a blood vessel.SOLUTION: A forceps system for sealing a vessel may include a first jaw and an opposing second jaw. At least one of the first jaw and the second jaw includes at least a first electrode having a first electrode portion and a second electrode portion laterally separated to permit electrical isolation between the first electrode portion and the second electrode portion, the first electrode portion and the second electrode portion being individually operationally addressable to permit blood vessel characteristics to be individually tested by the first electrode portion and the second electrode portion. This can help allow each side of the target sealing region of the vessel to be tested individually.SELECTED DRAWING: Figure 3A