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The cryosurgical instrument for obtaining a tissue sample, a method for cooling a sensor head of a cryostat the surgical probe
The cryosurgical instrument for obtaining a tissue sample, a method for cooling a sensor head of a cryostat the surgical probe
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机译：用于获得组织样本的冷冻外科手术器械，用于冷却低温恒温器传感器头的方法以及外科手术探针
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摘要
The present invention relates to a the cryosurgical instrument for obtaining a tissue sample with a probe, wherein the probe a probe head for freezing adhesion of woven fabric, a sensor shaft for the delivery of the sensor head to the tissue, a feeding means for feeding a fluid into an expansion chamber and a removal device comprises. The discharge device for the removal of the expanded fluid from the expansion chamber connected to the same. The expansion of the fluid in the expansion chamber and cools the probe head in such a way that it leads to a freezing adhesion of tissue at a probe head. Such surgical instruments should, according to the invention, even in thin hollow organs such as, for example, gallen - or pancreas gear be used in order to remove tissue samples. However, in this field of use of certain demands on the dimension of the probe, which with conventional probes do not fulfill. The present invention solves this problem by the fact that the removal device at least one opening at the distal region of the probe comprises, in which the fluid discharges an external region outside of the probe. Thus, that is, according to the invention, a part of the expanded gas is discharged directly into the hollow organ.
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