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Simplified T-tube replacement with two-piece retrievable catheters
1Department of Radiology, Methodist Hospital, Thomas Jefferson University, Philadelphia, PA 19148.
Journal of Vascular and Interventional Radiology : JVIR
|August 1, 1991
Summary
A novel two-piece T tube simplifies biliary drainage procedures, allowing easy insertion and removal over a guide wire. This innovative design enhances safety for tube exchanges, even through immature or transhepatic tracts.
Area of Science:
- Gastroenterology and Hepatology
- Surgical Innovation
- Medical Device Development
Background:
- Biliary T-tube placement and replacement can be challenging, particularly in cases requiring repeated interventions or through difficult access routes.
- Existing T-tube designs may necessitate tract dilation or complex manipulation, increasing procedural risks and patient discomfort.
Purpose of the Study:
- To introduce and evaluate a new two-piece T tube designed for simplified insertion, secure fixation, and versatile application in biliary drainage.
- To assess the safety and efficacy of this novel T tube in patients requiring biliary access, including those with immature or transhepatic tracts.
Main Methods:
- Development of a two-piece T tube system with a guide wire insertion capability and a suture-locking mechanism for self-retaining configuration.
- In situ formation of the T configuration within the common bile duct using guiding sutures.
- Modification of the distal tube with a long limb or T loop for internal biliary drainage.
- Clinical application in patients with immature (n=6) and transhepatic (n=6) tracts, with a total of 33 catheters placed in 21 patients.
Main Results:
- The two-piece T tube was successfully introduced as a single unit over a guide wire, typically without tract dilation.
- The self-retaining T configuration was reliably maintained by the suture-locking device.
- The T tube demonstrated ease of retrieval, repositioning, and exchange.
- Placement through immature and transhepatic tracts was feasible and safe.
- Thirty-three catheters were placed in 21 patients without significant complications.
Conclusions:
- The new two-piece T tube offers a safe, effective, and user-friendly alternative for biliary drainage and T-tube management.
- Its design facilitates easier and potentially less invasive procedures, improving patient outcomes.
- The device's versatility in configuration and application through various tracts warrants its consideration in clinical practice.