摘要:
Medical devices and methods for making and using medical devices are disclosed. An example method for manufacturing a medical device may include cutting a tubular body into a plurality of ring members. The plurality of ring members may include a first ring member and a second ring member. A connecting member may extend between the first ring member and the second ring member. The method may also include disposing a polymeric member along the plurality of ring members to define a tubular member and articulating the tubular member to break the connecting member.
摘要:
An intravascular device delivery system (100) has an elongated member (102) with an outer sleeve (114) and a distal cap (112) longitudinally fixed to a guidewire receiving member (116). The guidewire receiving member is moveable longitudinally relative to the outer sleeve to move the distal cap relative to the outer sleeve.
摘要:
The invention relates to an elongated steerable tubular body (18) and a steerable instrument (10; 2201) comprising the same. The elongated steerable tubular body comprises at least one flexible zone (15, 17; 14, 16) and at least one intermediate cylindrical element (102; 2203) that comprises at least three longitudinal steering elements (4; 2338). In said at least one flexible zone, at least two longitudinal steering elements comprise respective first (64) and second (65) flexible strips being provided with one or more of respective first (67a) and second (68b) spacers. Each spacer (67a, 68b) comprises a respective strip (71, 72) having at least one first curved section (51a, 52a). Each strip being attached to its respective flexible strip (64, 65) with at least two portions of said respective strip. Said first (67a) and second (68b) spacers are alternatingly arranged in the axial direction of the elongated steerable tubular body.
摘要:
A surgical instrument (10, 110, 210) includes an articulating tube assembly (20, 120, 220) having a proximal end and a distal end, an articulating region (23, 123, 223) disposed between the proximal end and the distal end, and a proximal axis axially extending from the proximal end to the articulating region (23, 123, 223). The articulating tube assembly (20, 120, 220) includes an inner tube (24, 124, 224) and an outer tube (26, 126, 226) each having the articulating region (23, 123, 223). The inner tube (24, 124, 224) and the outer tube (26, 126, 226) being movable relative to each other proximal to the articulating region (23, 123, 223) and fixed axially relative one another distal to the articulating region (23, 123, 223). The surgical instrument (10, 110, 210) also includes an actuation assembly (22, 122, 222a) coupled to the articulating tube assembly (20, 120, 220) for moving the inner tube (24, 124, 224) and the outer tube (26, 126, 226) axially relative to each other for articulating the articulating region (23, 123, 223) of the articulating tube assembly (20, 120, 220) between a first configuration and a second configuration, wherein the articulating region (23, 123, 223) is rigid in the first configuration and the second configuration.
摘要:
A method for manufacturing a steerable instrument (10) for endoscopic and/or invasive type applications, the instrument comprising an elongated tubular body (18) having a proximal end part (11), a distal end part (13) and an intermediate part (12) between proximal and distal end parts, the proximal end part having at least one actuation proximal zone (14, 15). The distal end part has at least one flexible distal zone (16, 17), and the elongated tubular body is configured such that a movement of an actuation proximal zone is transferred to a corresponding flexible distal zone for a corresponding movement thereof. The elongated tubular body comprises an inner cylindrical element (101), an outer cylindrical element (104) and at least one intermediate cylindrical element (102, 103) having longitudinal elements (4) and provided between the inner and outer cylindrical elements. Inner, outer and intermediate cylindrical elements are coupled such that movement of an actuation proximal zone is transferred by the longitudinal elements of one of the intermediate cylindrical elements to a corresponding flexible distal zone. Adjacent longitudinal elements of an intermediate cylindrical element are releasably or flexibly attached, for instance, by fracture or flexure elements (7).
摘要:
A surgical tool (50) with a bendable shaft (190). At least one inelastic cable (280) and at least one elastic cable (288) extend along the shaft. The shaft moves relative to the body (80) to which the shaft is attached. When the shaft is so displaced, the shat bends around the inelastic cable. The inelastic and elastic cables cooperate to hold the bendable section (224) of the shaft in compression so the bendable section of the shaft resists deformation.
摘要:
Catheter curve shape struts for steerable medical devices such as catheters are disclosed. These struts may not only help shape a steerable portion of a medical device (e.g., a distal portion of a catheter), but also may help to return a steered or deflected portion of the medical device to an uncurved configuration when it is no longer desirable or necessary to steer or deflect the medical device. These struts may include first and second pluralities of complementary, staggered cutout regions. When used in a catheter that is deployed via an introducer, at least some configurations of the catheter curve shape strut can enable the catheter to be rotated about its longitudinal axis, even when the distal deflectable section is in a curved configuration and inside of the introducer.
摘要:
A steering tool (10) includes an internal tube (12) disposed inside an external tube (14). The internal and external tubes (12, 14) are arranged for longitudinal axial movement relative to one another. A distal end of the internal tube (12) is fixedly joined to a distal end of the external tube (14). At least one of the internal and external tubes (12, 14) is slotted near the distal end thereof, and the longitudinal axial movement causes bending of the distal ends of the tubes.