Instrument for endoscopic applications or the like
An instrument for endoscopic applications, including a tubular member having a handling end portion having a flexible portion and actuating devices located at the other end portion, and longitudinal elements for transferring the movement of the actuating devices to the handling end portion resulting in a change of orientation thereof, whereby the handling end portion includes at least two independent flexible portions, whereby the actuating end portion has a corresponding number of actuating devices, and whereby each actuating device is connected by its own set of longitudinal elements to a part of the handling end portion for effecting a change of orientation of one of the flexible portions.
1. An instrument for endoscopic applications, comprising:
a multi-layered elongated tubular body having a first end portion and a second end portion, the first end portion being a handling end portion, and actuating means being disposed at the second end portion, the second end portion being an actuating end portion, and the elongated tubular body having longitudinal elements configured to translate a deflection of the actuating means to a related deflection of the handling end portion,
wherein the handling end portion comprises at least two independent flexible portions,
wherein a number of the actuating means of the actuating end portion is equal to a number of the independent flexible portions of the handling end portion, each actuating means being associated with a set of longitudinal elements,
wherein each actuating means is connected by the set of longitudinal elements associated therewith to a part of the handling end portion for effecting a related deflection of one of the flexible portions,
wherein the elongated tubular body comprises at least one cylindrical intermediate layer which has a number of longitudinal slits defining at least one set of longitudinal elements,
wherein the longitudinal elements are formed by remaining parts of the intermediate layer;
wherein the actuating means comprise a tubular section containing a number of alternating flexible and rigid zones, and wherein each set of longitudinal elements connects one of the rigid zones with a part of the handling end portion.
2. An instrument according to claim 1 , wherein the instrument includes a number of intermediate layers, and wherein each set of the longitudinal elements is located within one of the intermediate layers.
3. An instrument according to claim 2 , wherein each set of longitudinal elements is located in a separate intermediate layer.
4. An instrument according to claim 1 , wherein the instrument further comprises an outer protective layer and an inner protective layer.
5. An instrument according to claim 4 , wherein the instrument has at least two intermediate layers containing different sets of longitudinal elements, and wherein between each pair of adjacent intermediate layers there is a separation layer.