Workbook Archive

Scenario Model

Scenario workbook comparing operating assumptions, funding choices, and delivery constraints for the xTend prosthetic arm project.

Workbook: 03_Funding_Plan_Scenarios.xlsx Download original

Scenario Model

A scenario workbook that shows how funding and delivery assumptions change the plan.

  • Scenario planning
  • Assumption testing
  • Funding coverage

This workbook was made to compare cases without mixing assumptions and outputs in the same place.

The structure lets a reader move from assumptions to scenarios and then to grant coverage, so the logic stays visible.

Overview

Source sheet: 00_Read_Me

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Workbook: 03_Funding_Plan_Scenarios.xlsx · Sheet: 00_Read_Me
xTend — Funding Plan Scenarios
Forward-looking. All inputs derived from confirmed source figures.
This workbook answers: 'What does it cost xTend to deliver N arms, and what funding does it need to raise?' All cost inputs come from the P2 file (£91/arm basic, £158/arm bionic, £1,046 Phase 1 equipment, £3,378 Capacity Build). Arm-count targets are scenario inputs — edit cells in '02_Scenarios' to model alternative plans.

Assumptions

Source sheet: 01_Assumptions

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Workbook: 03_Funding_Plan_Scenarios.xlsx · Sheet: 01_Assumptions
Confirmed-source Assumptions
Input Value (£) Source
Cost per basic arm (materials + delivery) £91 P2 file, Phase 1 sheet: £46 + £45
of which materials £46 P2 file, Phase 1 sheet, R19
of which delivery £45 P2 file, Phase 1 sheet, R23
Cost per bionic arm (components + delivery) £158 P2 file, Phase 2 sheet, R27
of which components £130 P2 file, Phase 2 sheet, R20 line total
of which delivery £40 P2 file, Phase 2 sheet, R24
Phase 1 equipment (one-time) £1,046 P2 file, Phase 1 sheet, R11
Capacity build — equipment (one-time) £2,463 P2 file, Capacity sheet, R11
Capacity build — prototyping (one rotation) £915 P2 file, Capacity sheet, R18
Capacity build total £3,378 P2 file, Capacity sheet, R20
Phase 2 operational tooling £133 P2 file, Phase 2 sheet (sum of itemised lines)
NHS comparator per arm £2,600 HY CV, Abstract paragraph 2
Arms delivered to date £1 CV: 1 arm to Ksar el Kebir, Morocco within ~6 months of founding

Scenarios

Source sheet: 02_Scenarios

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Workbook: 03_Funding_Plan_Scenarios.xlsx · Sheet: 02_Scenarios
Funding Plan — Scenarios (editable arm counts)
Line A: 'Steady' B: 'Capacity Build' C: 'Wolfson + Capacity' D: 'Stretch'
Basic arms delivered 10 30 50 100
Bionic arms delivered 0 5 10 20
Equipment plan (one-time £) £1,046 £3,378 £3,378 £3,378
Phase 1 equipment £1,046 £1,046 £1,046 £1,046
Capacity build (add'l) 0 2332 2332 2332
Basic arms cash (basic × £91) £910 £2,730 £4,550 £9,100
Bionic arms cash (bionic × £158) £0 £790 £1,580 £3,160
Phase 2 tooling (if any bionic) £0 £133 £133 £133
TOTAL FUNDING REQUIRED (£) £1,956 £7,031 £9,641 £15,771
Arms total 10 35 60 120
Avg cost per arm (incl. equipment) £196 £201 £161 £131
Equivalent NHS cost saved (£) £24,044 £83,969 £146,359 £296,229
Funding gap vs known cash on hand (placeholder) TBD — fill cash-on-hand TBD — fill cash-on-hand TBD — fill cash-on-hand TBD — fill cash-on-hand

Grant Coverage

Source sheet: 03_Grant_Coverage

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Workbook: 03_Funding_Plan_Scenarios.xlsx · Sheet: 03_Grant_Coverage
Which Grants Would Close Each Funding Need
Scenario Funding required Weighted pipeline (per 02_Grant_Pipeline) Headline grants needed Coverage ratio (weighted) Comment
A: 'Steady' — 10 basic arms £1,956 £8,500 Ann Rylands + 1 small trust covers this 435% Phase 1 only — no new equipment needed if already purchased
B: 'Capacity Build' — 30 basic + 5 bionic £7,031 £8,500 Bailey Thomas + Anton Jurgens + Westham House 121% Adds 2× Cr-10, 3× Bamboo, prototyping
C: 'Wolfson + Capacity' — 50 basic + 10 bionic £9,641 £33,500 Wolfson £25k + 2–3 mid-size trusts 347% Wolfson opens up the model
D: 'Stretch' — 100 basic + 20 bionic £15,771 £33,500 Wolfson + James Tutor + Anton Jurgens + corporate top-up 212% Multi-funder coordination required