摘要:
The present invention is a probe (20) for detecting, and removing radioactively tagged tissue (12), e.g., a sentinel lymph node, within the body of a living being. The probe is arranged to be inserted through a small percutaneous portal into the patient's body, and is movable to various positions adjacent the tagged tissue (12) to detect the presence of radiation therefrom so that the probe can be positioned immediately adjacent that tissue to ensnare or trap it. The probe can then be removed from the patient's body, carrying the tagged tissue with it. The probe may be constructed to make use of a scintillation crystal (52), a collimator, adjustable or fixed, and a back shielding light pipe (64).
摘要:
A stent graft delivery system and methods for use are provided for use in treating aneurysms occurring in single and bifurcated lumen hollow body organs or vessels, and for treating arteriovenous fistulas. A graft delivery component (10) provides a clinician with complete control over the location of a graft at any time prior to implantation of stents, even when the graft is deployed from its introducer catheter. The graft delivery component (10) includes a plurality of radially expandable fingers (11-16) that releasably engage the graft, while the stent delivery component (10) includes a small diameter introducer catheter and permits a wide range of conventional stent designs to be used to permanently fix the graft in position.
摘要:
Methods and apparatus are provided for such uses as attaching grafts of tubing (e.g., lengths of saphenous vein) between sites in a patient's body via the patient's existing arteries and veins. Grafts may be held in place during graft delivery using a partially inflated proximal balloon and a partially inflated distal balloon which frictionally engage axially spaced portions of the graft (e.g., pronged attachment rings that pierce the graft adjacent its ends). After aligning the distal balloon and distal end of the graft with the distal attachment site, the distal balloon may be further inflated to help attach the distal end of the graft to the distal attachment site (e.g., by driving the prongs of the distal attachment ring into the distal attchment site). The proximl balloon may then be inflated to similarly help attach the proximal end of the graft to the proximal attachment site. The balloons are deflated to facilitate withdrawal of the apparatus from the installed graft. The insertion instruments allows the distance between the distal and proximal balloons to be adjusted, thereby accommodating grafts of various lengths. The separation between distal and proximal balloons may be fixed or substantially fixed using a locking mechanism.
摘要:
A tubular artificial graft for attachment to a patient's tubular body tissue has an initially radially relatively small connector structure adjacent each of its ends. The initial relatively small size of each connector structure facilitates insertion of that portion of the graft into the body tissue to which that connector structure is to make a connection. After a connector structure is properly positioned relative to the body tissue, the connector structure is radially enlarged to connect the graft to the body tissue. The connection is preferably both a mechanical and a fluid-tight connection.
摘要:
An apparatus (10) and a method for managing polyps by which an elongated tubular member (11) generally positionable within a working channel of an endoscopic device. The tubular member (11) carries a selectively extendable severing device (13) and capturing device (14) at its distal end (12). Slide member (17) at the proximal end (16) of the tubular member (11) enables a physician to extend and retract the severing and capturing devices (13, 14). The physician retracts the capturing device (14) to grasp the portion of the polyp to be severed and retracts the severing device (13) to sever the polyp. The capturing device (14) retains the severed portion of the polyp for removal with the tubular member (11). In one of the embodiments the capturing device (14) includes an injection needle (71A).
摘要:
A medical grasper device (10) that is useful for holding and manipulating a body organ is described. The grasper device is partially inserted into a body cavity and comprises a flexible strap (14) having a distal section (18) that is deployed from a tube (12) to form a partial closed loop (2). A terminal end of the strap has an aperture (42) that is manipulated by a separate forceps-type device to mate with a connection means (56) provided on the grasper device to complete the loop. The closed loop is then adjustable in size to provide for positioning the loop at a desired location around the target body organ to hold and manipulate the body organ. At such time as the grasper device is no longer needed in the surgical procedure, the strap is either removed from the connection means with the aforementioned forceps-type device or is cut by a separate cutting means to release the loop from the body organ and the grasper device is removed from the body cavity.
摘要:
This invention is a medical device (10) having a body (18), an actuating member (24) mounted to move relative to the body, a working element (20) and an elongated force transmitting member (12) capable of transmitting force between the actuating member and the working element. The force transmitting member includes a flexible cable portion. The force transmitting member is attached on one side of the cable portion to the body, and associated in a driving relationship on an opposite side of the cable portion with the working element. The actuating member includes a pulley surface (26) bodily movable therewith. The cable portion is trained about the pulley surface such that movement of the actuating member, given a distance relative to the body, causes the working element to move a substantially greater distance than the given distance.
摘要:
A device for grasping or cutting an object has at least two elongate elements (1, 3), preferably two elongate elements, at least a portion of at least one of the elements is formed from a pseudoelastic material, preferable a shape memory alloy. End portions (7) of the elements (1, 3) can be moved away from one another and then toward one another to grasp or cut an object between the elements. In certain embodiments, the device further comprises an actuating means and at least a portion of the elements and/or the actuating means is formed from a pseudoelastic material. The device is particularly useful in grasping or cutting objects located in difficult to reach areas, for example within the body during surgery.
摘要:
An endoscopic snare device (10, 100, 100') includes a pair of bowed, resiliently deformable, snare wires (12, 14) with bow shaped memory, a mesh (20) attached to mid-portions (16, 18) and distal portions (22, 24) of the snare wires (12, 14) for a mesh length (A) that is less than the snare length (L), a bowed, resiliently deformable, support wire (116) extending in a plane out of the plane of the snare wires (12, 14), and a pair of bowed, resiliently deformable, incising wires (112, 114) side by side with the snare wires (12, 14). The support wire (116) is electrically insulated. A mouth cord or wire (46) extends from one snare wire (12), through the support wire (116), and to the other snare wire (14).
摘要:
Vorrichtung zur Aufnahme eines Präparates in einen Bergebeutel Die Erfindung betrifft eine Vorrichtung (1) zur Aufnahme eines Präparates (29) in einen Bergebeutel (5), wobei das Präparat (29) mit einer elektrochirurgischen Schneidschlinge (6, 6') in einer Körperhöhle (27) abgetrennt wurde, wobei der Bergebeutel (5) an einem Ende (7) eines in einem Einführungsrohr (3) längsverschieblichen Aktuators (4) angeordnet und aus einer distalen Öffnung (10) des Einführungsrohres (3) ausfahrbar ist, wobei im ausgefahrenem Zustand eine erste Beutelöffnung (9) des Bergebeutels (5) durch eine mit ihr verbundene elastisch federnde erste Schlinge (8, 8') aufgespannt und im eingefahrenem Zustand durch die erste Schlinge (8, 8') geschlossen und vom distalen Ende (11) des Einführungsrohres (3) abgedeckt ist, wobei die elektrochirurgische Schneidschlinge (6, 6') elastisch federnd ausgebildet und über den Aktuator (4) mit dem Bergebeutel (5) aus dem Einführungsrohr (3) sich aufspannend ausfahrbar ist und wobei die Schneidschlinge (6, 6') der ersten Beutelöffnung (9) benachbart angeordnet ist, und wobei die elektrochirurgische Schneidschlinge (6') benachbart zu der ersten Schlinge (8') angeordnet ist. Die Erfindung zeichnet sich dadurch aus,dass die Schneidschlinge (6, 6') an ihrem distalen Ende (13, 13') einen freiliegenden, unisolierten, elektrisch leitenden Schneidbereich (14, 14') aufweist und in einem Isolierbereich (15, 15') außerhalb des Schneidbereiches (14, 14') isoliert ausgebildet ist, dass der Bergebeutel (5) mindestens eine zweite verschließbare Beutelöffnung (17) aufweist, und dass die zweite Beutelöffnung (17) an dem der ersten Beutelöffnung (9) abgewandten Ende des Bergebeutels (5) angeordnet ist.