Suction drain for the aspiration of discharges

• US 5,451,215 A
• Filed: 01/13/1995
• Issued: 09/19/1995
• Est. Priority Date: 09/17/1990
• Status: Expired due to Term

• Current Assignee: Dietmar Wolter
• Original Assignee: Dietmar Wolter
• Inventors: Wolter, Dietmar
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): GRING, NOELLE K
• Application Number:
  US08/372,885
• Time in Patent Office: 249 Days
• Field of Search: 604/93, 604/264, 604/266, 604/268, 604/269, 604/280, 604/265
• US Class Current: 604/265
• CPC Class Codes: A61M 2025/0056 provided with an antibacterial agent, e.g. by coating, residing in the polymer matrix or releasing an agent out of a reservoir
• CPC Class Codes: A61M 25/00 Catheters; Hollow probes dilators A61M29/00; peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00 ; for measuring or testing A61B; materials for catheters A61L29/00
• CPC Class Codes: A61M 27/00 Drainage appliance for wounds or the like , i.e. wound drains, implanted drains negative pressure wound therapy devices A61M1/90; implements for holding wound open A61B17/02 ; middle ear drainage A61F11/202

Abstract

A suction drain for the aspiration of fluids from a body, comprising an elongated, tubular first portion to be introduced into a body, the first portion having a generally constant outer diameter and a plurality of openings along substantially its entire length, an interior portion, an exterior surface, and a terminal end supporting an antibacterial material, wherein the antibacterial material is in the form of an end-cap which extends longitudinally outward from the terminal end of the first portion and which has an outer diameter that is no larger than the outer diameter of the first portion.

Claims

1. A suction drain for the aspiration of fluids from a body, comprising an elongated, tubular first portion to be introduced into a body, the first portion having a generally constant outer diameter and a plurality of openings along substantially its entire length, an interior portion, an exterior surface, and a terminal end supporting an antibacterial material, wherein the antibacterial material is in the form of an end-cap which extends longitudinally outward from the terminal end of the first .portion and which has an outer diameter that is no larger than the outer diameter of the first portion.

2. A suction drain as claimed in claim 1, wherein the antibacterial material is releasably attached to the terminal end of the first portion.

3. A suction drain as claimed in claim 1, wherein the size of the openings in the suction drain decreases in the direction of suction.

4. A suction drain as claimed in claim 1, wherein the antibacterial material is enclosed in an absorbable material which can be absorbed by the body.

5. A suction drain as claimed in claim 4, wherein the absorbable material is polyglycolidelactide.

6. A suction drain as claimed in claim 4, wherein the absorbable material is collagen.

7. A suction drain as claimed in claim 4, wherein the suction drain has an intended breaking point.

8. A suction drain as claimed in claim 1, wherein the antibacterial material is an antibiotic.

9. A suction drain as claimed in claim 1, wherein the antibacterial material is gentamicin.

10. A suction drain as claimed in claim 1, wherein the antibacterial material has gentamicin as an antibiotic and polymethyl-methacrylate as a carrier substance.

11. A suction drain as claimed in claim 1, wherein the antibacterial material includes an antibiotic in a carrier, and the rate of release of the antibiotic depends upon the ratio of the antibiotic and the carrier.

12. A suction drain according to claim 1, wherein the end-cap has a first cylindrical portion which is configured to be positioned within the first portion at the terminal end and a second cylindrical portion which is connected to the first cylindrical portion and is configured to be positioned outside the first portion.

13. A suction drain according to claim 1, wherein the end-cap is configured to permit diffusion of antibacterial material into the body in a flow direction which is generally parallel to the length of the tube.

14. A suction drain for the aspiration of fluid from a body, comprising:

a suction tube having a length and an elongated first portion with a generally constant outer diameter to be introduced into the body, the first portion having a plurality of openings along substantially the entire length thereof for discharge of the fluid, and a terminal end having an antibacterial material positioned thereon, the antibacterial material being in the form of an end-cap which extends longitudinally outward from the terminal end of the first portion away from the first portion, has a diameter that is no larger than the outer diameter of the first portion, and contains polymethyl methacrylate as a carrier.

15. A suction drain according to claim 14, wherein the antibacterial material is releasably attached to the terminal end of the first portion.

16. A method of making a suction drain, comprising:

obtaining an elongated, narrow tube to be introduced into a body, the tube including a length and a first portion having a generally constant outer diameter, the first portion having a plurality of openings along substantially its entire length and a terminal end, and

adhering an end-cap comprising antibacterial material to the terminal end of the first portion, the end-cap extending longitudinally outward from the tube and having a diameter which is no larger than the diameter of the first portion of the tube, the end-cap being positioned to permit diffusion of antibacterial material into the body in a flow direction which is generally parallel to the length of the tube.

17. A method according to claim 16, wherein the end-cap contains polymethyl methacrylate and the end-cap is adhered to the terminal end of the tube using methyl methacrylate.