摘要:
A medical device for manipulating a portion of tissue(4). The device may have one or more opposing jaws (20,30). One of the jaws may be configured to be placed between the portion of tissue and an underlying portion of tissue, and have an orifice (43) configured to direct a fluid towards a surface of the other jaw so as to move the portion of tissue towards the said other jaw. A fluid delivery channel(44)may extend between the orifice and a fluid source. A switch may be operable to flow the fluid from the source, through the channel, and out of the orifice. Related methods are also disclosed.
摘要:
In accordance with an aspect of the present disclosure, a tissue extraction device may include a bag (14) having an interior. The tissue extraction device also may include a cutting element (18) extending through the interior of the bag. The cutting element may include a strand. The cutting element also may include a cutting member on the strand. The cutting member may include an edge for cutting tissue as the cutting member is drawn across tissue.
摘要:
This specification describes methods of attaching a mesh to a loop member, which includes covering a wire with a layer, manipulating the wire along with the layer to form the loop member, placing the mesh over the loop member, transferring heat to the layer to cause it to partially melt and become tacky, allowing the mesh to fuse with the tacky layer and form a secure bond on cooling, and trimming portions of the mesh extending beyond the circumference of the loop member. A retrieval device formed by the methods include the loop member and attached mesh positioned, and longitudinally movable within, a tubular sheath. The loop member and mesh are deployed to capture a target object and partially retracted for removal of the object.
摘要:
A medical device may include an insertion device having a proximal end, a distal end, and a lumen extending therethrough. The medical device may further include a snare device configured to transition between a contracted state within the lumen of the insertion device, and an expanded state extending distally of the insertion device. The snare device may include a loop including a pair of legs and a distal tip. The distal tip may include a plurality of stabilizers between the pair of legs.
摘要:
An exemplary surgical device includes a shaft with a lumen defined therethrough and an element movable from a stored position to a deployed position in which a larger portion of the element extends out of the distal end of the lumen; wherein motion from the stored position to the deployed position causes a first leg of the element to advance distally relative to the distal end of the shaft, and causes a second leg of the element to move proximally relative to the distal end of the shaft.
摘要:
Disclosed is a snare instrument with a shaft area, a snare structure in a snaring area distally adjoining the shaft area, and a plurality of noose wires. The snare structure can be pulled closed, from an opened position with distally open snare, and has a plurality of flexible bending tubes which extend distally forwards and radially outwards in a radiating shape to form the snare, and of which the distal ends can be moved radially inwards towards each other so as to pull the snare structure closed. Each noose wire extends with a first base portion from the shaft area loosely through one of the bending tubes as far as the distal end thereof, from there with a noose arch to the distal end of the same or another bending tube, and from there with a second base portion loosely through the latter back to the shaft area. At least one of the noose wire base portions extends through each bending tube.
摘要:
Die Erfindung betrifft eine endoskopische Schneidvorrichtung (1) zur Zerteilung von Gewebe (7) des menschlichen oder tierischen Körpers, mit einem Rohr (2), einem in dem Rohr (2) in dessen Längsrichtung verschiebbar aufgenommenen Verschiebungselement (3) und einem mit dem distalen Ende (4) des Verschiebungselements (3) verbundenen Schneidnetz (5), mit oder ohne Schneidelement (16) an der Spitze, mit dazwischen angeordneten Maschenöffnungen (6, 6a), wobei das Schneidnetz (5) zwischen einer ersten außerhalb des Rohrs (2) angeordneten Position zur Aufnahme zumindest eines Teils des zu zerteilenden Gewebes (7) und einer zweiten innerhalb des Rohrs (2) angeordneten Position überführbar ist, wobei das Gewebe (7) durch die Maschenöffnungen (6, 6a) des Schneidnetzes (5) gezwungen und zerteilt wird.
摘要:
The present invention generally provides treatment devices for ligating and resecting biological tissue, in particular, ligating and resecting internal biological tissue while being used in conjunction with a flexible endoscope, and methods for use thereof. The aim being to maintain haemostasis and subsequently allow for the delivery of electrical current to said biological tissue. The treatment devices are in particular for the ligation and removal of large pedunculated colonic polyp and comprise a snare member (5) and a ligating member (4).
摘要:
The present invention generally provides treatment devices for ligating and resecting biological tissue, in particular, ligating and resecting internal biological tissue while being used in conjunction with a flexible endoscope, and methods for use thereof. The aim being to maintain haemostasis and subsequently allow for the delivery of electrical current to said biological tissue. The treatment devices are in particular for the ligation and removal of large pedunculated colonic polyp and comprise a snare member (5) and a ligating member (4).
摘要:
An electrosurgical snare (500), e.g. suitably sized for insertion down the instrument channel of an endoscope, arranged to radiate microwave frequency energy (e.g. having a frequency greater than 1 GHz) from an elongate conductive element (122) within an area encircled by a retractable loop (118). The elongate conductive element (122) and retractable loop (118) may be independently slidable relative to a snare base (512) at a distal end of a sleeve (114) to provide an appropriate device configuration. By controlling the shape of the emitted microwave field, the risk of collateral thermal damage can be reduced.