Patent ID: 8622995

Claim:
A method of delivering an antimicrobial composition into the proximal end of a transdermal catheter, the method comprising: a) providing a transdermal catheter implanted within a patient, the transdermal catheter having a proximal end located outside of the patient and a distal end located at least partially within a blood vessel of the patient, the catheter comprising: i) a hub located at the proximal end of the catheter, ii) exterior threads on the proximal end of the hub, and iii) an interior channel in the hub leading from an opening at the proximal end of the catheter to a lumen in the catheter, wherein at least a portion of the interior channel has a tapered interior surface; b) providing an antimicrobial composition delivery device for insertion into the proximal opening of the catheter, the antimicrobial composition delivery device comprising: i) a tapered member configured for insertion into the catheter hub, the tapered member configured to substantially seal the proximal end of the catheter, ii) an elongate member extending from the tapered member, the elongate member configured for insertion into the catheter hub, iii) an antimicrobial composition positioned on the elongate member, and iv) a retaining ring comprising threads configured to engage the exterior threads on the catheter hub; c) injecting a liquid lock solution into the transdermal catheter such that at least the proximal end of the transdermal catheter is substantially filled with the lock solution; d) applying a clamp across the proximal end of the catheter, the clamp substantially preventing the flow of fluids across the clamped portion of the catheter; and e) after applying the clamp, insertion of the elongate member and tapered member of the antimicrobial delivery device into the hub located at the proximal end of the catheter; wherein the elongate member is retained substantially within the hub of the transdermal catheter; wherein the elongate member is entirely proximal to the clamp; wherein the tapered member of the antimicrobial delivery device sealingly engages the tapered member of the hub of the catheter; and wherein the antimicrobial composition elutes into the lock solution on the proximal end of the clamp.