Medical instrument with injection needles that can be spread out sideways

#The invention relates to a medical instrument comprising a tubular body housing at least one injection needle.

#A medical instrument of this type in the form of a catheter is known from U.S. Pat. No. 5,538,504.

#This catheter has a tubular body housing one injection needle with a radially outwardly directed tip portion in an axially undisplaceable manner, and has a control element for deploying the tip of the injection needle out sideways from the tubular body.

#The invention is described in more detail and explained below on the basis of a selected exemplary embodiment in conjunction with the accompanying drawings, in which:

#FIG. 1 shows a perspective view of a component of the medical device, to be specific the tubular body, from which the handle laterally projects,

#FIG. 2 shows a perspective view of a further component, to be specific a protective shaft, in which four injection needles are housed,

#A medical instrument represented in the figures is designated as a whole by the reference numeral 10. This medical instrument is an anuscope.

#It can be seen from FIG. 1 that the medical instrument has an elongated tubular body 12 in the form of a tube 14, which is terminated at the distal end by means of a half-round cap 16. The length and diameter of the tube 14 are formed such that it can be pushed into the anus of a human body.

#In the region of the end cap 16, four openings 18, 18′ are provided in the tubular body 12 in a circumferentially distributed manner, the purpose of which will be explained later.