Why this digit
Only because the hypothetical injury is in the middle finger. The digit is heavily loaded, mechanically coupled, crowded by tendon and vessels, and not a favorable implant site.
CONCEPT 01 — UNRESOLVED HYPOTHESIS
MF-01
NeuroLattice
Observing recovery after a digital-nerve gap
Could a temporary, intermittently reader-powered, non-stimulating interface make recovery after an existing traumatic middle-finger digital-nerve gap more observable?
Current evidence does not show that it can. External ultrasound, sensory testing, and wearable comparators remain unresolved. This is a question, not a product, prototype, recommendation, or invitation to take part.
ILLUSTRATIVE AMBIENT GEOMETRY — NOT MF-01 DEVICE GEOMETRY OR EVIDENCE
THE POSITION
Observing recovery is the question. An implant is not yet the answer.
Why keep the internal question
An internal interface is recorded only as a question for an existing nerve gap. Its observation role is unsupported unless it changes a clinical decision more than ultrasound, sensory testing, or a removable external comparator would.
Who is excluded
Healthy people, children, consumers, body-modification customers, enhancement users, and self-experimenters. No one is being recruited or studied for this concept.
EVIDENCE LADDER
Adjacent evidence is not integrated evidence.
Human and animal work supports parts of the problem space. Nothing in the reviewed record demonstrates the complete MF-01 hypothesis.
- 01Adjacent only
Human precedent
Digital-nerve gaps are repaired in people. Human studies also use serial sensory assessment, electrodiagnostics, high-resolution ultrasound, and, in one small comparison, fMRI. The inspected sources do not show that implant telemetry improves a decision or outcome.
- 02Component evidence
Animal signal
Animal studies already include instrumented regenerative microchannels and sieve interfaces, impedance or EIT monitoring, and passive batteryless peripheral-nerve recording. None validates a digital sensory recovery proxy or MF-01.
- 03Unbuilt
System hypothesis
The inspected sources did not establish the exact proposed combination or its clinical usefulness. The search remains incomplete.
- 04Decision gate
Unknown
Fit, signal specificity, foreign-body response, external-comparator value, power transfer, thermal behavior, removal, clinical usefulness, classification, differentiation, and freedom to operate remain unresolved.
SYSTEM RISK — UNRESOLVED
The signal can fail. The object can harm.
The hypothesized input is endogenous activity or a reader-interrogated interface change. The hypothesized output is a low-data research signal. It is not a diagnosis, recovery score, treatment instruction, stimulation command, consumer alert, identity check, or health prediction.
Major failure modes
- Compression, tethering, ischemia, altered tendon glide, or loss of motion.
- Infection, migration, fracture, delamination, debris, or foreign-body response.
- Fibrosis, biofouling, electrode drift, cross-talk, or movement artifact destroying signal quality.
- A weak proxy being misread as recovery, reassurance, or a reason to intervene.
- Power-transfer, thermal, electromagnetic, imaging, security, or package failure.
- Removal or degradation causing additional injury to already-repaired tissue.
Gates before practical development
- 01
A qualified hand and peripheral-nerve team identifies a clinical decision that better observation would actually change.
- 02
A qualified comparison assesses ultrasound, sensory testing, electrodiagnostics, wearables, and other external methods without presuming equivalence or an implant advantage.
- 03
Benchtop work separates a plausible recovery signal from motion, inflammation, cross-talk, and noise.
- 04
Non-animal mechanical and packaging work establishes whether the abstract system question deserves further study.
- 05
Qualified biomaterials, neural-engineering, regulatory, ethics, human-factors, and patent review supports a lawful path.
- 06
The final finished system earns device-specific evidence for biocompatibility, sterility, thermal, electromagnetic, mechanical, security, degradation, and removal risk.
- 07
Qualified review finds a benefit capable of outweighing the added risk of implantation.
KILL CRITERIA
Reasons to stop are part of the study.
Any one of these conditions defeats the direction. None has been cleared.
- 01
No internal signal correlates with meaningful sensory recovery.
- 02
Qualified comparison finds that ultrasound, sensory testing, electrodiagnostics, a wearable, or another lower-invasiveness method provides equivalent useful information.
- 03
The interface compromises nerve health, perfusion, tendon glide, joint motion, or grip.
- 04
Fibrosis, biofouling, cross-talk, or motion artifact makes the readout uninterpretable.
- 05
Removal or degradation could add injury to the repaired nerve.
- 06
The concept needs healthy-person implantation or active stimulation to justify itself.
- 07
Qualified patent review finds no useful freedom to operate or meaningful differentiation.
- 08
The evidence, regulatory, manufacturing, or surveillance burden exceeds plausible patient benefit.
SOURCE BOUNDARIES
Every source has a boundary.
These are bounded anchors from an incomplete research register. The search is not systematic and is not a novelty, freedom-to-operate, regulatory, or clinical opinion.
Neurovascular anatomy of a third digit
One embalmed hand; anatomy evidence, not a universal design dimension.
Open primary or official record ↗Digital-nerve repair comparison
Human repair precedent; no sensorized conduit or monitoring benefit.
Open primary or official record ↗Regenerative microchannel electrode recordings
Rat sciatic nerve, wired system, and no meaningful human recovery proxy.
Open primary or official record ↗External follow-up after nerve-conduit repair
Human ultrasound series with one fMRI comparison case; no implant-telemetry comparison or outcome-prediction proof.
Open primary or official record ↗Biodegradable restorative nerve interface
Rat long-gap injury with active electrical cues and external hardware; not human, digital-nerve, passive, or MF-01 evidence.
Open primary or official record ↗Wireless rat nerve-impedance monitoring
Animal abstract-level evidence; full paper not inspected, active stimulation present in one group, and impedance is not a validated recovery proxy.
Open primary or official record ↗Pressure changes nerve impedance
Ex-vivo rat and monkey evidence that impedance is mechanically confounded; not regeneration monitoring.
Open primary or official record ↗Batteryless ultrasonic peripheral recording
Acute anesthetized-rat backscatter recording; no regenerative conduit, digital nerve, or chronic recovery outcome.
Open primary or official record ↗FDA radio-frequency wireless technology guidance
System-level obligations; not a link budget, thermal result, or authorization.
Open primary or official record ↗The question remains open.
MF-01 remains a bounded research question. No fabrication, engineering, biological work, implantation, animal work, human testing, or development program is authorized.