Effect of Reuse on Surface Characteristics of Balloon Angioplasty Catheters
Bibliographic record
Abstract
Surfaces of reused angioplasty catheter balloons were characterized by scanning electron microscopy (SEM), image analysis, Fourier transform infrared (FT-IR) spectroscopy and X-ray photoelectron spectroscopy (XPS). The surfaces were found to have longitudinal ridges, cracks, wrinkled regions and particulates. Most of the particles were carbon-based, and contained traces of Cl and Si. The average number of particles ranged between 11 and 38 per mm2, while the average particle size ranged from 14 micron to 28 micron. About 70%-90% of the particles were larger then 10 micron which is approximately the diameter of the fine blood capillaries. The particles appeared to be firmly attached to the outer surface of the balloon. FT-IR and XPS analysis revealed the presence of Si, the absence of proteins, and suggested that the surface of the reused balloon catheters was oxidized. The study highlights the large number of particles created and released during angioplasty.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".