Device–host response interface. Classification centers on limiting unwanted biological responses while preserving useful tissue interaction.

Biological responses and surface design

Proteins, bacteria and tissue can interact with medical-device and biomaterial surfaces in different ways. This theme examines materials designed to reduce unwanted attachment, friction or inflammation while supporting useful biological interactions. Summaries distinguish laboratory models, animal studies and clinical evidence.

Antifouling and lubricious surfaces

Research on reducing nonspecific attachment and friction at device surfaces while retaining the intended biological contact.

8 papers

Ureteral friction, adhesion and encrustation: the FLUID study examines a microporous TPU interface that stores silicone oil. Distinguish initial bacterial adhesion at 72 hours from bacterial recovery in a 14-day mature-biofilm model, and read the four- and eight-week porcine implantation results as separate preclinical evidence.

Antifouling surfaces and biliary stent occlusion: the ELFS study examines a lubricated dopamine–fluoropolymer interface. Fouling in mouse gallbladders and patency in rabbit bile ducts were evaluated in different models, with fluid environments and endpoints that also differ from ureteral stent studies.

Antifouling, lubricious endoscope lenses: the LIDENS study evaluates visibility under blood droplets and condensation in laboratory tests. Read the results alongside residual small droplets and the need to replenish lubricant after sterilization.

0962026Summary based on the full text

Lubricious anti-adhesive interface prevents friction, biofilm, and encrustation in long-term indwelling ureteral stents

Materials Today Bio, 39, 103405 (2026)

Biological responses and surface designAntifouling and lubricious surfaces

FLUID maintains a lubricated interface using silicone oil stored in a porous ureteral-stent wall. Initial bacterial adhesion fell by over 94% at 72 hours, while bacterial recovery in a 14-day mature-biofilm model fell by about 21% or 28%, depending on the comparator stent.

Immune and foreign-body responses

Approaches to studying and modulating inflammatory and immune responses to materials and devices.

7 papers
0572020Summary based on the full text

Antibacterial infection and immune-evasive coating for orthopedic implants

Science Advances, 6 (44), eabb0025 (2020)

Biological responses and surface designImmune and foreign-body responses

A lubricant-infused stainless-steel implant coating prevented infection in all six rabbits given MRSA-preincubated fixation implants, versus six of six bare.

Biological interaction control

An extended grouping for functional interactions between materials or devices and biological targets. Papers with a weak direct connection to host responses retain an ambiguity flag.

6 papers

The TAB neural-recording interface: lubricant and BDNF combines reduced nonspecific attachment with support for neural interactions. Distinguish the representative single-unit recording shown at 12 months in mice from the eight-month window available for electrode-level comparisons.

0852025Summary based on the full text

Bioadaptive liquid-infused multifunctional fibers for long-term neural recording via BDNF stabilization and enhanced neural interaction

Science Advances, 11(37), eadz1228 (2025)

Biological responses and surface designBiological interaction control

TAB combines a lubricated interface with immobilized BDNF to reduce nonspecific attachment and support neuronal interactions. Representative single-unit recordings in mice extend to 12 months; electrode-level statistical comparisons cover a separate 8-month period.

0582021Summary based on the full text

Electronic Drugs: Spatial and Temporal Medical Treatment of Human Diseases

Advanced Materials, 33(47), 2005930 (2021)

Biological responses and surface designBiological interaction control

A review of electronic drugs grouped by site and duration of action: ingestible and patch devices, bioresorbable implants and long-term implants.

Foundations · connection under review

A provisional grouping for foundational materials or processes that may connect to this theme. It does not establish theme fit; each paper retains a rationale and ambiguity flag.

8 papers
0372017Summary based on the full text

Evolution and clinical translation of drug delivery nanomaterials

Nano Today, 15, 91-106 (2017)

Biological responses and surface designFoundations · connection under review

Review tracing inorganic, polymeric and lipid-based drug delivery nanomaterials to FDA approval, noting over 200 nanomaterial products then in clinical studies.

0302016Summary based on the full text

Bio-Inspired Extreme Wetting Surfaces for Biomedical Applications

Materials, 9(2), 116 (2016)

Biological responses and surface designFoundations · connection under review

A review of bio-inspired extreme wetting surfaces, from lotus-type to slippery designs, and their use in cell patterning, spheroid culture, devices and assays.