MEDHA 2026
Grant Medical College · M.I.C.E · MEDHA 2026

Designed to open.
Engineered to seal.

Reusable syringes and IV sets depend on a loose plastic cap to stay sterile. It gets left off, set down, or lost mid-shift — and the tip pays for it. We designed two ways to remove the cap as a point of failure, not just remind people to use it.

See the two concepts → Why the cap fails
46%
of syringe tips test contaminated intra-op
67%
of connectors stay contaminated after a standard wipe
₹8,160cr
India syringe market, 2026
FIG. 01 — HINGE-CAP PROTOTYPE SCALE N.T.S.
CAD render of the hinged protective cap in the open position, mounted on a graduated syringe barrel
Integrated hinge — molded as one piece, nothing to lose
Wedge seal encloses the sterile luer tip when closed
Swings open/closed one-handed, no separate part to align
01 — The Problem

A cap is not a system. It's a single point of failure.

Every existing safeguard — alcohol wipes, disinfecting caps, careful technique — depends on someone doing the right thing, every time, under time pressure. The data says that doesn't hold.

42%
of split-septum connectors show microbial growth in clinical studies
46%
of syringe tips tested contaminated across 426 intra-operative syringes
67%
of connectors still transmit contamination after a standard alcohol wipe

Why caps fail in practice

  • Loose, separate component — easy to drop, misplace, or set on an unsterile surface
  • Time pressure leads to skipped or rushed re-capping
  • Once contaminated, the cap becomes a contamination source, not a barrier
  • No way to visually confirm the cap — or the surface beneath it — is still sterile

Clinical consequence

  • Open-lumen setups like stopcocks are frequently left uncapped and directly exposed
  • Hub/connector contamination is the leading cause of maintenance-related CLABSIs
  • Existing fixes treat the symptom — disinfecting a surface — not the failure point itself
  • CLABSIs are largely preventable, yet cost ~$46,000 per case on average
02 — Two Concepts

Remove the cap as a decision, not a habit

One concept is built and physically prototyped now. The second is a proposed direction we're pursuing once medical-grade antimicrobial silicone is sourced — both aimed at the same failure point from different angles.

Prototype

Integrated Hinge Cap

A cap molded directly onto the barrel rim. It swings open to use, swings closed to protect — and it is physically never a separate piece.

Clinician holding the first hinged syringe-cap prototype in a realistic operating-room setting
First prototype · clinical-use context
Close product view of the first syringe prototype with its integrated cap open
Integrated hinge · open position
Three-step demonstration showing the hinged syringe cap closed, opening, and fully open
One-handed opening sequence
Three first-prototype syringes placed on a sterile blue clinical drape
Prototype set · physical build
CAD render of the assembled syringe with the hinged cap closed
  • Single-piece injection-molded barrel + hinge-cap, medical-grade polypropylene
  • One-handed open/close motion — mirrors familiar flip-cap handling
  • Wedge geometry fully encloses the luer tip when closed
  • Standard luer-lock compatible, no change to hospital workflow
MATERIAL — Medical-grade PP  ·  STATUS — First physical prototype completed
Proposed

Single-Slit Self-Sealing Silicone Cap

No separate cap to lose at all. A single-slit bud of medical-grade silicone retracts on connection and closes itself the instant the line is disconnected.

Product render of the single-slit self-sealing silicone cap mounted on an IV set end
  • Retracts like a bud when the IV set connects, sealed by a single self-sealing slit
  • Closes back to its original shape by itself the moment it's detached
  • No separate component exists — nothing to drop, lose, or forget
  • Medical-grade silicone; sterilizable (EO / autoclavable); latex-free, biocompatible
Four-step diagram: idle state, connecting, connected, and detached, showing the self-sealing cap retracting and resealing
MATERIAL — Medical-grade silicone  ·  STATUS — Proposed, pending material sourcing
03 — Evidence Base

Grounded in published clinical data

Four studies anchor the problem statement and the design direction — spanning needleless connectors, intra-operative syringe handling, and reusable equipment.

2015 · Nursing Research and Practice

Disinfection of Needleless Connector Hubs: Clinical Evidence Systematic Review

Moureau NL, Flynn J
140 studies reviewed — 33–45% of connectors become contaminated; ~50% of post-insertion infections trace back to the connector.
2015 · Journal of Hospital Infection

Bacterial Contamination of Intravenous Fluids and Drugs in Anaesthetic Practice

Mahida N, Levi K, Kearns A, Snape S, Moppett I
426 syringes studied intra-operatively — failure to recap and bare-handed technique were significant risk factors.
2008 · Anesthesiology

Transmission of Pathogenic Bacterial Organisms in the Anesthesia Work Area

Loftus RW, Koff MD, Burchman CC, et al.
Contaminated work surfaces raised the odds of stopcock contamination by 4.7×, with links to higher mortality.
2021 · JA Clinical Reports

Microbial Contamination on Cuff Syringe & Surroundings in the OR

Oishi R, Nakamura K, Yahagi Y, et al.
Reused, non-sterilized cuff syringes carried S. aureus and E. faecalis — direct precedent for reusable-device risk.
ISO 7886-1 ISO 8536-4 ISO 594-1/2 ISO 10993-1/5/10 ISO 10993-17/18 ISO 22196 ASTM E2180 ISO 13485 CDSCO MDR 2017
04 — Why It Matters

The market is large, the fix is cheap

₹8,160cr
India syringe market, 2026
₹4,566cr
Global disinfection cap market, 2026
$46,000
Average cost per preventable CLABSI
~₹8
Estimated added material cost per hinge-cap unit
05 — Team

Medicine, engineering, and design in one room

Postgraduate Medical
Dr. Sharvari Kinge
Senior Medic · Mumbai
Undergraduate Medical
Dr. Kalyani Jalgaonkar
Junior Medic · Mumbai
Engineer
Shruti Bhosale
Engineer · Mumbai
Designer
Anuj Yadav
Designer · Mumbai

Clinician — Dr. Kundan Gosavi