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Claims for Patent: 5,860,946

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Claims for Patent: 5,860,946

Title: Instrument for inserting a suppository
Abstract:In an instrument for inserting a suppository, which instrument comprises a tubular housing (31) with a first end adapted to receive said suppository between two tongues (30) and a second end through which a plunger (22) is inserted in the tube, which plunger has a first end having a circular cross section and two axially spaced circumferential flanges (26, 27) and a second end projecting from the second end of the tube (31). The first end of the tube has an inwardly extending shoulder (25) which engage between said flanges (26, 27) and the first end of the piston is by radial slots divided into an uneven number of sectors (29). The plunger (22) has between its first end and a press button (24) at its second end angular spaced radial walls (21) abutting the inner wall of the tube (31) and axial spaced disc shaped walls are provided having a diameter corresponding to the inner diameter of the tube (31).
Inventor(s): Hofstatter; Thibaud (Helsing.o slashed.r, DK)
Assignee: Novo Nordisk A/S (Bagsvaerd, DK)
Application Number:08/886,588
Patent Claims: 1. An instrument for inserting a suppository, which instrument comprises a tube with a first end adapted to receive said suppository and a second end through which a plunger is inserted in the tube, which plunger has a first end having a circular cross section and two axially spaced circumferential flanges and a second end projecting from the second end of the tube, the first end of the tube having an inwardly extending shoulder which engage between said flanges, characterised in that the first end of the piston by radial slots are divided into a number of sectors.

2. An instrument according to claim 1, characterised in that the number of sectors into which the first end of the piston rod is divided is uneven.

3. An instrument according to claim 1, characterised in that the piston between its first end and a press button formed at its second end comprises angular spaced radial walls abutting the inner wall of the tube.

4. An instrument according to claim 3, characterised in that axial spaced disc shaped walls are provided having a diameter corresponding to the inner diameter of the tube.

5. An instrument according to claim 3, characterised in that the suppository is held in the tube by opposite resilient tongues having in walls facing each other recesses mating the outer contour of the suppository.
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