Apparatus for inducing an immune response in cancer therapy

A device for inducing a generalized immune response against primary solid tumors and metastases in cancer therapy that acts by enclosing autologous living malignant tissue in an inhibitive ischemic environment formed by a porous membrane inside a holder which can take any suitable anatomically compatible shape when introduced either partially or integrally at an implantation site in a body cavity, wherein the membrane has pores larger than 2 microns but smaller than the mean size of the cells of the biological tissue which is enclosed in the holder and wherein the size of the pores is specifically chosen so that all forms of large immunologically active leucocytes can pass freely in and out of the holder while smaller malignant cells of specific tumors remain safely trapped inside without the risk of their secondary dissemination at the implantation site.