Abstract: A drive system includes a carrying device with a wearable carrying frame, an energy store carried by the carrying frame, and at least one electric drive motor carried by the carrying frame. A coupling device is configured to mechanically couple a work apparatus to the drive system. The carrying device is formed as a shoulder bag or backpack, having at least one strap that permits the carrying device to be worn over a shoulder of a user. Two straps may be provided that permit the carrying device to be worn over both shoulders of a user. Also disclosed is a tool having such a drive system and a work apparatus, which may be concrete vibrator.

Abstract: In an adaptive device and an adaptive method for adapting the stomach opening of a patient, a gastric band having a non-elastic back part on the exterior and a first expandable chamber on the interior are placed around the stomach of the patient for adapting the stomach opening, and the stomach opening of the patient is adapted by modifying the amount of fluid in the first expandable chamber. For this purpose, the adaptive device includes a second expandable chamber, so that the second expandable chamber is connected to the first expandable chamber, and whereby the fluid is displaced from the one expandable chamber to the other expandable chamber in order to modify the stomach opening of the patient. The adaptive device can in particular be controlled by changing the position of the body of the patient.

Abstract: This invention relates to a device (20) for inserting and positioning surgical instruments (10) in the body of a patient, with an outer cover (22), into which outer cover (22) at least a front part (11) of the surgical instrument (10) is insertable, and which outer cover (22) is removable for positioning the surgical instrument (10) at the point of application, the outer cover (22) being pulled away from the front part (11) of the surgical instrument (10) by means of a pulling device (21). In particular, the outer cover (22) is able to be pulled backwards over the front part (21) <sic. (11)> of the surgical instrument (10), and the surgical instrument (10), or respectively its front part, is able to be uncovered again, so that the function assigned to the surgical instrument (10) is able to be carried out unimpeded. The outer cover (22) can be returned to the starting position, in particular also by means of a return device.

Abstract: In an adaptive device and an adaptive method for adapting the stomach opening of a patient, a gastric band having a non-elastic back part on the exterior and a first expandable chamber on the interior are placed around the stomach of the patient for adapting the stomach opening, and the stomach opening of the patient is adapted by modifying the amount of fluid in the first expandable chamber. For this purpose, the adaptive device includes a second expandable chamber, so that the second expandable chamber is connected to the first expandable chamber, and whereby the fluid is displaced from the one expandable chamber to the other expandable chamber in order to modify the stomach opening of the patient. The adaptive device can in particular be controlled by changing the position of the body of the patient.