Abstract:
A surgical instrument comprises a shaft, an end effector extending distally from the shaft, and a housing extending proximally from the shaft. The housing comprises a first shroud portion, a second shroud portion, a working assembly nested in the first shroud portion, wherein the working assembly is detachable from the first shroud portion, wherein the second shroud portion is removably couplable to the first shroud portion to permit the working assembly to be detached from the first shroud portion, and at least one securing member movable to secure the working assembly to the first shroud portion.
Abstract:
The invention relates to a tubular medical instrument having a hollow shaft, a handle equipped with at least two gripping members and positioned on the proximal end of the shaft, and at least one push-pull rod that is mounted in the hollow shaft and has a tool consisting of at least two jaw members. For opening and closing at least one jaw member of the tool, said push-pull rod can be coupled with at last one rotatable gripping member of the handle, and the hollow shaft and handle can be releasably connected to one another by means of a coupling mechanism. To create a coupling mechanism that is simple to operate, it is proposed with the invention that the coupling mechanism should be configured as a combined clamping and snap-on device.
Abstract:
Methods and devices are provided for anchoring suture to tissue, incorporating anchoring devices constructed substantially from suture. The anchoring devices are constructed as longitudinally extended, preformed knot configurations that upon deployment are reconfigured to form anchoring knots having an increased cross-section relative to the preformed knot configuration, for secure lodging in tissue. The anchoring devices are suitable for single and multi-anchor surgical procedures in soft tissue or bone, and multiple anchors can be delivered using a single delivery device.
Abstract:
The surgical instrument comprises a forceps tool (5) having a forceps base (21) and at least two forceps fingers (29) guided such that they can move relative to one another on the forceps base (21), and a manual actuation element for opening and closing the forceps element (5). The manual actuation element is connected to the forceps tool (5) via an elongated, flexible actuation cable (3) which comprises a tubular, flexible cable sheath (13) connected to the forceps base (21) and a flexible cable core (15) guided displaceably in the cable sheath (13) and connected to the forceps fingers (29) for opening and closing the forceps tool (5). At least the forceps fingers (29) of the forceps tool (5) are made of a non-ferromagnetic or substantially non-ferromagnetic metal, in particular titanium. The cable sheath (13) and the cable core (15) are each made of a electrically non-conducting composite material in which a plurality of reinforcing threads (37) running along the actuation cable (3) are embedded in a plastics matrix. Such a gripper instrument can also be employed under the operating conditions of a magnetic resonance tomograph.
Abstract:
The invention relates to a tubular medical instrument having a hollow shaft, a handle positioned on the proximal end of the shaft, and at least one tool actuation element that is positioned in the hollow shaft and has on its distal end a tool, wherein the tool actuation element can be coupled with at least one actuation mechanism of the handle to actuate the tool and wherein the tool actuation element and the hollow shaft can be detachably connected to one another by a coupling mechanism. To create a coupling mechanism that is essentially free of any play and is simple to operate, it is proposed with the invention that the stopping of the coupling mechanism between the tool actuation element and the hollow shaft should be dependent on the position of the tool.
Abstract:
An exemplary embodiment providing one or more improvements includes a micro endoscope having steering, rotation and tool control function which can be utilized for insertion using a needle and catheter for performing arthroscopy and endoscopic procedures.
Abstract:
The disclosed subject matter describes a tubular shaft for a tubular shaft instrument having a hollow shaft component, an actuating rod arranged in the hollow shaft component and functional elements that are disposed at the distal ends of the shaft component and/or the actuating rod. The actuating rod is axially displaceable relative to the hollow shaft component to thereby move the distal segments of the functional elements toward one another, past one another and/or away from one another. The actuating rod has at least one area in which flexible segments and support segments alternate with one another and in which the actuating rod has a clearly lower bending resistance at least in one transverse direction than outside this at least one area. The hollow shaft component additionally has at least one area in which the wall of the shaft component features recesses and the shaft component has, at least in a transverse direction, a clearly lower bending resistance than that outside this at least one area. The at least one areas of the actuating rod and of the shaft component overlap at least partially in the longitudinal direction of the tubular shaft. A friction-reducing layer is provided at the at least one area of the actuating rod, which decreases the friction of the actuating rod at the inner wall of the shaft component. The friction-reducing layer is preferably comprised of a heat-shrink tube.
Abstract:
A surgical instrument may include a shaft, a force transmission mechanism, and an end effector. The shaft may have a proximal end and a distal end. The force transmission mechanism may be coupled to the proximal end of the shaft. The end effector may be coupled to the distal end of the shaft. The shaft may include a body having an outer surface and an inner surface. The inner surface may surround a lumen configured to receive a drive member that extends through the lumen. The outer surface of the body may form an outer surface of the shaft. The body may be made of a single material from the inner surface of the body to the outer surface of the body.
Abstract:
A suturing device including an outer bendable body and an inner bendable needle with a freely bendable angle includes a longitudinally extending outer hollow body having a point and a hollow passage and an inner needle portion or part disposed therein. The outer hollow body is constructed and dimensioned to receive a sized suture needle within the hollow passage with slightly close tolerances welded at its base to a point along the hollow body of the outer part and wherein the outer body includes a lower relatively stiff bendable material and an upper portion of relatively malleable material adjacent to and fixed to the lower portion. Further, the outer hollow body is more malleable as it becomes closer to the point.
Abstract:
Methods and devices are provided for anchoring suture to tissue, incorporating anchoring devices constructed substantially from suture. The anchoring devices are constructed as longitudinally extended, preformed knot configurations that upon deployment are reconfigured to form anchoring knots having an increased cross-section relative to the preformed knot configuration, for secure lodging in tissue. The anchoring devices are suitable for single and multi-anchor surgical procedures in soft tissue or bone, and multiple anchors can be delivered using a single delivery device.