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Device for forming an inserting hole for an endoscope

  • US 4,981,482 A
  • Filed: 05/10/1989
  • Issued: 01/01/1991
  • Est. Priority Date: 08/20/1987
  • Status: Expired due to Term
First Claim
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1. A kit for forming an increasingly large opening through the skin for the sequential draining of liquid and the insertion of an endoscope, said kit comprising(a) a metallic guide wire,(b) a small diameter synthetic resin tube (1) that is elastically bendable and has a central passage which can accommodate within it said metallic guide wire,(c) a medium diameter synthetic resin tube having an inner diameter slightly larger than the outer periphery of said small diameter tube so that it will fit closely around the exterior periphery of the small diameter tube (1);

  • (d) a medium-large diameter flexible synthetic resin tube (3) having an inner diameter only slightly larger than the outer diameter of said small diameter tube (1) so that it will fit closely around the exterior periphery of the small diameter tube (1) when said medium diameter tube (2) is no longer surrounding said small diameter tube (1), but an outer diameter larger than said medium diameter tube (2);

    (e) a large diameter synthetic resin tube (4) having an inner diameter only slightly larger than the outer diameter of said small diameter tube (1) so that it will fit closely around the exterior periphery of the small diameter tube (1) when said medium-large diameter tube (3) is no longer when said medium-large diameter tube (3) is no longer surrounding said small diameter tube (1), but an outer diameter larger tan said medium-large diameter tube (3);

    (f) a drainage tube (5) of soft elastic synthetic resin having an inner diameter only slightly larger than the outer diameter of said small diameter tube (1) so that it will fit closely around the exterior periphery of the small diameter tube (1) when said large diameter tube (4) is no longer surrounding said small diameter tube (1) and an outer diameter the same as said large diameter tube (4), and(g) an extra large diameter tube (6) made of hard synthetic resin having an inner diameter only slightly larger than the outer diameter of said drainage tube (5), so that it will fit closely around the exterior periphery of said drainage tube (5),and whereineach of said tubes having outer and inner ends,the inner ends of said small, medium, medium-large and large diameter tubes (1, 2, 3 &

         4) being of reduced diameter so as to thereby form tapered inner ends,the inner end of said drainage tube (5) being provided with several openings (5a).

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