Catheter compression clamp

• US 5,279,597 A
• Filed: 01/13/1992
• Issued: 01/18/1994
• Est. Priority Date: 01/13/1992
• Status: Expired due to Term

• Current Assignee: Arrow International Incorporated (Teleflex Incorporated)
• Original Assignee: Arrow International Investment Corporation (Teleflex Incorporated)
• Inventors: Dassa, Alyssa J., Newswanger, Raymond K.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): Gutowski, Anthony
• Application Number:
  US07/819,323
• Time in Patent Office: 736 Days
• Field of Search: 604/163, 604/165, 604/171, 604/240-243, 604/250, 604/256, 604/283, 604/905, 251/7, 285/104, 285/339, 285/343
• US Class Current: 604/535
• CPC Class Codes: A61B 2017/00469 for insertion of instruments, e.g. guide wire, optical fibre
• CPC Class Codes: A61M 2039/1033 Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
• CPC Class Codes: A61M 2039/1066 having protection means, e.g. sliding sleeve to protect connector itself, shrouds to protect a needle present in the connector, protective housing, isolating sheath
• CPC Class Codes: A61M 25/0111 Aseptic insertion devices
• CPC Class Codes: A61M 39/12 for joining a flexible tube to a rigid attachment

Abstract

A catheter clamp. The clamp comprises a snap-acting device which contains a rotatable inner and outer member. The inner member has an inner passageway for a catheter and an outer surface containing at least one protrusion. The outer member has an interior beveled sidewall. When the outer member is twisted or rotated in a first direction relative to the inner member, the protrusion on the inner member is compressed by the beveled sidewall, thereby compressing the inner member and the catheter. When the outer member is twisted in the opposite direction relative to the inner member, the protrusion disengages from the beveled sidewall and the catheter is decompressed. Use of the clamp in conjunction with a catheter contamination sleeve is disclosed.

Claims

1. A non-rotational catheter clamp comprising:

a first compressible inner member having an interior passageway for a catheter, an outer surface containing at least one rib-like protrusion and a plurality of slits which facilitate the even compression of said first compressible inner member;

a second co-axial outer member in rotatable contact with said inner member and having at least one interior sidewall which rotatably compresses said at least one rib-like protrusion when said outer member is rotated in a first direction relative to said first compressible inner member, thereby compressing said inner member and locking a catheter within said passageway, and which rotatably decompresses said rib-like protrusion when said outer member is rotated in a second direction relative to said compressed inner member, thereby decompressing said inner member and unlocking a catheter within said passageway

2. The non-rotational catheter clamp of claim 1 wherein said slits extend longitudinally along the surface of said inner member.

3. The catheter clamp of claim 1 wherein the interior passageway defined by said inner member is lined with a resilient compressible material.

4. The catheter clamp of claim 3 wherein said resilient compressible material is a spongy foam.

5. A non-rotational catheter clamp comprising:

a first cylindrical hollow inner member containing a central passageway for a catheter and an outer generally flexible wall containing four rib-like protrusions separated at about 90 degree intervals by elongated slits extending lengthwise thereof;

a second coaxial cylindrical outer member rotatably matable with said inner member and having a plurality of interior surfaces each of which is rotatably matable with one of said protrusions, such that when said first inner member is rotated at about 45 degrees in a first direction relative to said second outer member, each of said protrusions is compressed against a corresponding one of said surfaces, thereby compressing said inner member and said passageway, and such that when said compressed inner member is rotated at about 45 degrees in the opposite direction relative to said second member each of said protrusions is rotated away from each of said corresponding interior surfaces, and said inner member and said passageway decompresses.

6. A non-rotational catheter clamp comprising:

a first inner member containing a central passageway for compressing and securing a catheter and an outer generally flexible wall having four rib-like protrusions separated at 90 degree intervals;

a second co-axial outer member rotatably matable with said inner member and having four beveled interior sidewalls, each of which is rotatably matable with one of said rib-like protrusions, such that when said inner member is rotated in a first direction relative to said second member, each of said protrusions is compressed against one of said sidewalls thus compressing said central passageway, and such that when said compressed inner member is rotated in the opposite direction relative to said second outer member each said protrusion is rotated away from each said sidewall and said passageway decompresses; and

means for limiting the rotation of said first inner and second outer members.

7. The catheter clamp of claim 6 wherein said central passageway is lined with a compressible spongy foam material

8. The catheter clamp of claim 6 wherein said inner member contains a plurality of slits disposed between said protrusions which facilitate the even compression of said inner member about said catheter.

9. The catheter clamp of claim 6 wherein said inner member contains means for connecting the clamp to another implement.

10. The catheter clamp of claim 6 further including a protective catheter sheath disposed in overlying relationship to a length of catheter intended for introduction into a blood vessel of a patient, wherein said outer member contains means for securing said catheter clamp to said protective sheath.

11. A clamp according to claim 9 wherein said implement is a catheter introducer, further including a protective catheter sheath disposed in overlying relationship to a length of catheter intended for introduction into a blood vessel of a patient, wherein said outer member contains means for securing said catheter clamp to said protective sheath.