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Carinal reconstruction with a Y-shaped collagen-conjugated prosthesis
T Sekine1, T Nakamura, K Matsumoto
1Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan. sekine@frontier.kyoto-u.ac.jp
The Journal of Thoracic and Cardiovascular Surgery
|June 6, 2000
Summary
A novel bifurcated tracheal prosthesis shows promise for carinal reconstruction in dogs, offering a safer alternative to direct suturing and reducing mortality associated with tracheobronchial fistula.
Area of Science:
- Biomaterials science
- Surgical innovation
- Veterinary medicine
Background:
- Direct suturing for carinal reconstruction leads to high mortality due to tracheobronchial fistula.
- A new tracheal prosthesis was developed to address limitations in carinal reconstruction.
Purpose of the Study:
- To evaluate the safety and efficacy of a novel bifurcated tracheal prosthesis for experimental carinal replacement in dogs.
Main Methods:
- A Y-shaped Marlex mesh tube prosthesis reinforced with polypropylene spirals was designed.
- Collagen from porcine skin was conjugated to the prosthesis for biocompatibility and airtightness.
- The prosthesis was used to replace the tracheobronchial bifurcation in 10 beagle dogs.
Main Results:
- Eight out of 10 dogs survived the 6-month postoperative period.
- Bronchoscopic and histologic examinations showed no stenosis or dehiscence in surviving dogs.
- The prosthesis was integrated with smooth whitish tissue, with partial epithelial coverage observed.
Conclusions:
- The developed bifurcated tracheal prosthesis demonstrates long-term safety for carinal reconstruction.
- This prosthesis offers a viable alternative to traditional suturing methods, potentially improving patient outcomes.