Shunt Valve Library

CERTAS Plus

Programmable MRI-resistant — still confirmConvert ↗

Codman CERTAS Plus Programmable Valve · Integra (Codman) · Current

Radiograph of a Codman CERTAS Plus Programmable Valve — X-ray: Vach M, Weiss D, Ivan VL, et al. *Clin Neuroradiol* 2025;35:347–354, Fig. 2 — CC BY 4.0; cropped.

More radiograph examples of a Codman CERTAS Plus Programmable Valve — X-ray: Vach M, Weiss D, Ivan VL, et al. *Clin Neuroradiol* 2025;35:347–354, Fig. 2 — CC BY 4.0; cropped.

8-setting programmable ball-in-cone valve; setting 8 is a flow-limiting 'virtual off' (≥400 mmH2O). Optional integrated SiphonGuard.

Mechanism	Ball-in-cone differential-pressure valve; magnetically adjustable rotating construct.
Measured as	Average pressure across 5–50 mL/h (Integra performance chart), same in any gravitational orientation.
Tolerance	±20 mmH2O (settings 1–3) · ±25 (setting 4) · ±35 (settings 5–7)
MRI	Resists unintended change at 3 T — Confirm the setting after MRI (Integra).
X-ray ID	Elongated valve; bright rectangular magnets on a central rotating construct. Setting = the overlay sector holding the magnet that has the tantalum ball beside it; a right-hand-side (RHS) marker orients the film. Read with the Integra X-ray overlay tool aligned to the valve centerline and connectors.
Adjustment	CERTAS Tool Kit (mechanical) or CERTAS Plus Electronic Tool Kit (not for the MR suite). Audible click per step; safety stop between settings 1 and 8. Keep tissue over the valve <10 mm.

Setting	mmH₂O	cmH₂O	mmHg	Tolerance
1	25	2.5	1.8	±20
2	50	5.0	3.7	±20
3	80	8.0	5.9	±20
4	110	11.0	8.1	±25
5	145	14.5	10.7	±35
6	180	18.0	13.2	±35
7	215	21.5	15.8	±35
8 Virtual off — flow-limiting, minimum 400 mmH2O	≥400	40.0	29.4

Practical points from the manufacturer

Made available after March 2015 (Integra).
Setting 8 is not 'closed' — it limits flow with a ≥400 mmH2O minimum.

Integra — CERTAS Plus Electronic Tool Kit Quick Reference Guide (1195787-2-EN, ©2024)

Hakim Programmable (CHPV)

Programmable MRI may change the settingConvert ↗

Codman HAKIM Programmable Valve · Integra (Codman) · Current

Radiograph of a Codman HAKIM Programmable Valve — X-ray: Vach M, Weiss D, Ivan VL, et al. *Clin Neuroradiol* 2025;35:347–354, Fig. 2 — CC BY 4.0; cropped.

More radiograph examples of a Codman HAKIM Programmable Valve — X-ray: Vach M, Weiss D, Ivan VL, et al. *Clin Neuroradiol* 2025;35:347–354, Fig. 2 — CC BY 4.0; cropped.

18 settings from 30 to 200 mmH2O in 10 mmH2O steps; programmed with a codified magnetic signal that drives an internal stepper motor. Available with SiphonGuard.

Mechanism	Synthetic-ruby ball-in-cone; flat stainless spring on a stepper-motor cam (titanium chassis).
Measured as	Nominal setting = valve opening pressure. Integra's L-P IFU also reports the measured system pressure with a 120 cm peritoneal catheter at 20 mL/h (shown as 'with catheter').
Tolerance	±14 mmH2O (settings 30–120) · ±19 (130–200), regardless of orientation; ~10 mmH2O per step
MRI	Up to 3 T will not damage it but MAY CHANGE THE SETTING — Always confirm the setting after MRI (X-ray or programmer). Repeated 3 T exposure may demagnetize the rotor and reduce programmability.
X-ray ID	Small ring (cam) with an adjacent white dot — the radiopaque marker on the cam. Read the marker position against the fixed right-hand-side marker; settings 70, 120 and 170 sit on the central cross. Inverted valve: the white marker appears on the LEFT. Program 210 − desired (190/200 not reachable) after first setting 200.
Adjustment	Codman HAKIM programmer (82-3190R) or VPV System. Keep ≤1 cm tissue over the mechanism (programmer reaches ~2 cm). Programmer is MR Unsafe.

Setting	mmH₂O	cmH₂O	mmHg	Tolerance	With 120 cm catheter @20 mL/h
30	30	3.0	2.2	±14	61
40	40	4.0	2.9	±14	68
50	50	5.0	3.7	±14	79
60	60	6.0	4.4	±14	86
70	70	7.0	5.1	±14	97
80	80	8.0	5.9	±14	106
90	90	9.0	6.6	±14	116
100	100	10.0	7.4	±14	124
110	110	11.0	8.1	±14	135
120	120	12.0	8.8	±14	144
130	130	13.0	9.6	±19	153
140	140	14.0	10.3	±19	162
150	150	15.0	11.0	±19	174
160	160	16.0	11.8	±19	184
170	170	17.0	12.5	±19	197
180	180	18.0	13.2	±19	208
190	190	19.0	14.0	±19	221
200	200	20.0	14.7	±19	229

Practical points from the manufacturer

While becoming familiar, change by no more than ±40 mmH2O per 24 h and monitor for 24 h (Integra IFU).
Magnets >80 gauss (speakers, household magnets) near the valve can change the setting.
X-ray the whole system after implantation, after every reprogramming, and after every MRI.

Strata II (with Delta chamber)

Programmable MRI may change the settingConvert ↗

Medtronic PS Medical Strata / Strata II Adjustable Pressure Valve · Medtronic (PS Medical) · Legacy (widely implanted)

Radiograph of a Medtronic PS Medical Strata / Strata II Adjustable Pressure Valve — X-ray: Rhomberg T, Trivik-Barrientos F, Hakim A, Raabe A, Murek M. *Acta Neurochir* 2024;166:69, Fig. 1B — CC BY 4.0; tiles cropped and joined.

5 performance levels (0.5–2.5). Adjustable ball-in-cone mechanism in series with the Delta chamber siphon-control device.

Mechanism	Magnetically adjustable valve mechanism + normally closed Delta chamber (opens to positive ventricular pressure, stays closed to negative distal pressure).
Measured as	Median pressure at 5 → 50 mL/h. Lying = 0 cmH2O hydrostatic; upright = −50 cmH2O hydrostatic (Medtronic charts). Nominal = midpoint of the range.
Tolerance	Not stated on the Strata II chart (Strata NSC: ±15–25 mmH2O)
MRI	3 T will not damage the valve but may change the setting — Check the performance level immediately after MRI (Medtronic).
X-ray ID	Bright, slightly irregular dense magnet inside a faint (mostly non-metallic) valve body. Performance level can be confirmed by X-ray, though Medtronic designed the hand tools to verify without one.
Adjustment	Strata hand tools (locator, indicator, adjustment — 45805) or StrataVarius electronic system (45806, numeric mmH2O readout).

Setting	Lying mmH₂O	cmH₂O	mmHg	Range (mmH₂O)	Upright mmH₂O	Upright mmHg
PL 0.5	20	2.0	1.5	15–25	40 (30–50)	2.9
PL 1.0	45	4.5	3.3	35–55	60 (50–70)	4.4
PL 1.5	80	8.0	5.9	70–90	95 (85–105)	7.0
PL 2.0	115	11.5	8.5	105–125	130 (120–140)	9.6
PL 2.5	145	14.5	10.7	135–155	157 (147–167)	11.5

⚠️ FDA Class 2 recall Z-1121-2017 (Strata II & Strata NSC, all catalog numbers; 1/17/2017–6/2/2017): reports of discrepancies between the set performance level and the X-ray reading; IFU warning updated.

Practical points from the manufacturer

StrataVarius shows a numeric value per level (e.g., PL 2.0 = 115 mmH2O, the chart midpoint).

Strata NSC (no siphon control)

Programmable MRI may change the settingConvert ↗

Medtronic PS Medical Strata NSC Adjustable Pressure Valve (incl. NSC LP) · Medtronic (PS Medical) · Legacy (widely implanted)

Radiograph of a Medtronic PS Medical Strata NSC Adjustable Pressure Valve (incl. NSC LP) — X-ray: Giancardo L, Arevalo O, Tenreiro A, Riascos R, Bonfante E. *Sci Rep* 2018;8:16052, Fig. 2 — CC BY 4.0; tiles cropped and joined.

Same adjustable mechanism as Strata without the Delta chamber — so the upper levels run much higher. Also the lumboperitoneal (NSC LP) valve.

Mechanism	Magnetically adjustable valve mechanism, no siphon control.
Measured as	Median pressure at 5 → 50 mL/h; nominal = midpoint.
Tolerance	PL 0.5: ±15 mmH2O (5 mL/h), ±25 (50 mL/h); PL 1.0–2.5: ±25 mmH2O
MRI	3 T will not damage the valve but may change the setting — Check the performance level immediately after MRI.
X-ray ID	Dense magnet inside a faint valve body — radiographically similar to Strata II (the source dataset grouped them as 'Strata II – NSC').
Adjustment	Strata hand tools or StrataVarius; the NSC LP valve requires StrataVarius (45806) postoperatively.

Setting	mmH₂O	cmH₂O	mmHg	Range (mmH₂O)
PL 0.5	25	2.5	1.8	15–35
PL 1.0	45	4.5	3.3	35–55
PL 1.5	100	10.0	7.4	90–110
PL 2.0	155	15.5	11.4	145–165
PL 2.5	210	21.0	15.4	200–220

⚠️ FDA Class 2 recall Z-1121-2017 (see Strata II).

Practical points from the manufacturer

Same 'PL' number ≠ same pressure across Strata models: PL 2.5 is ~145 mmH2O on Strata II but ~210 on Strata NSC.

StrataMR II

Programmable MRI-resistant — still confirmConvert ↗

Medtronic StrataMR II Adjustable Pressure Valve · Medtronic · Current

No openly licensed radiograph available yet.
No openly licensed radiograph yet — see Medtronic's StrataMR II materials ↗

MRI-resistant successor to Strata: ball-and-cone valve in series with a normally closed siphon-control mechanism; 5 performance levels; regular and small sizes.

Mechanism	Ball-and-cone pressure valve + siphon-control diaphragm; 'MRI resistance walls' — the mechanism must be lifted then turned to change level.
Measured as	Single labelled value per level on Medtronic's horizontal and vertical performance charts (10–50 mL/h).
Tolerance	Not stated in the brochure
MRI	Designed to withstand unintended change up to 3.0 T — Medtronic still advises verifying the performance level after MRI. MR Conditional 1.5/3 T (max spatial gradient 1900 G/cm).
X-ray ID	An additional tantalum marker distinguishes StrataMR II from the first-generation StrataMR (FDA K212641).
Adjustment	StrataMR four-tool set (locator, guider, indicator, adjustment — 45909SMR); tools are not position-dependent.

Setting	Lying mmH₂O	cmH₂O	mmHg	Upright mmH₂O	Upright mmHg
PL 0.5	25	2.5	1.8	37	2.7
PL 1.0	45	4.5	3.3	57	4.2
PL 1.5	80	8.0	5.9	92	6.8
PL 2.0	115	11.5	8.5	127	9.3
PL 2.5	145	14.5	10.7	157	11.5

⚠️ Predecessor StrataMR (2016): FDA Class 1 recall Z-1702-2017 (2/22/2017–9/19/2017) — locator-tool misalignment could set the rotor wrong → higher opening pressure and underdrainage.

Polaris (SPV)

Programmable MRI-resistant — still confirmConvert ↗

Sophysa Polaris Adjustable Pressure Valve · Sophysa · Current

Radiograph of a Sophysa Polaris Adjustable Pressure Valve — X-ray: Giancardo L, Arevalo O, Tenreiro A, Riascos R, Bonfante E. *Sci Rep* 2018;8:16052, Fig. 2 — CC BY 4.0; tiles cropped and joined.

5 positions in four pressure ranges; patented magnetic lock (two opposed micro-magnets) so a one-directional field cannot unlock the rotor. SX models come pre-attached to SiphonX.

Mechanism	Ruby ball-in-cone loaded by a flat semicircular spring on a rotor; self-locking rotor.
Measured as	Calibrated at 10 mL/h, valve alone (catheters add resistance). Standard SPV at 20 mL/h: 35 / 75 / 115 / 160 / 225.
Tolerance	−10 / +15 mmH2O
MRI	MRI-stable (magnetic lock); MR Conditional 1.5/3 T — Sophysa still recommends checking the setting before and after MRI; valve rotation during a 3 T exposure can change it.
X-ray ID	Two square magnets in a round, mostly radiolucent body; arrow-shaped connectors show flow direction. Titanium studs on the right side mark the 5 rotor positions; radiopaque range dots left of the inlet: 0 = 10–140, 1 = 30–200, 2 = 50–300, 3 = 80–400.
Adjustment	Polaris Adjustment Kit (locator, compass, magnet) or Electronic Compass; clockwise raises, counter-clockwise lowers. The locator range must match the valve range.

SPV-140 / SPVA-140 (10–140) — 0 range dots

Position	mmH₂O	cmH₂O	mmHg
1	10	1.0	0.7
2	40	4.0	2.9
3	80	8.0	5.9
4	110	11.0	8.1
5	140	14.0	10.3

SPV / SPVA / SPVB standard (30–200) — 1 dot

Position	mmH₂O	cmH₂O	mmHg
1	30	3.0	2.2
2	70	7.0	5.1
3	110	11.0	8.1
4	150	15.0	11.0
5	200	20.0	14.7

SPV-300 / SPVA-300 (50–300) — 2 dots

Position	mmH₂O	cmH₂O	mmHg
1	50	5.0	3.7
2	100	10.0	7.4
3	150	15.0	11.0
4	220	22.0	16.2
5	300	30.0	22.1

SPV-400 / SPVA-400 (80–400) — 3 dots

Position	mmH₂O	cmH₂O	mmHg
1	80	8.0	5.9
2	150	15.0	11.0
3	230	23.0	16.9
4	330	33.0	24.3
5	400	40.0	29.4

SPV-SX — standard + pre-attached SiphonX (+200 upright)

Position	Lying mmH₂O	cmH₂O	mmHg	Upright mmH₂O	Upright mmHg
1	30	3.0	2.2	230	16.9
2	70	7.0	5.1	270	19.9
3	110	11.0	8.1	310	22.8
4	150	15.0	11.0	350	25.7
5	200	20.0	14.7	400	29.4

SPV-140-SX — 10–140 + pre-attached SiphonX (+200 upright)

Position	Lying mmH₂O	cmH₂O	mmHg	Upright mmH₂O	Upright mmHg
1	10	1.0	0.7	210	15.4
2	40	4.0	2.9	240	17.7
3	80	8.0	5.9	280	20.6
4	110	11.0	8.1	310	22.8
5	140	14.0	10.3	340	25.0

Sophy Mini SM8

Programmable MRI may change the settingConvert ↗

Sophysa Sophy Mini SM8 Adjustable Pressure Valve · Sophysa · Current

Radiograph of a Sophysa Sophy Mini SM8 Adjustable Pressure Valve — X-ray: Vach M, Weiss D, Ivan VL, et al. *Clin Neuroradiol* 2025;35:347–354, Fig. 2 — CC BY 4.0; cropped.

More radiograph examples of a Sophysa Sophy Mini SM8 Adjustable Pressure Valve — X-ray: Vach M, Weiss D, Ivan VL, et al. *Clin Neuroradiol* 2025;35:347–354, Fig. 2 — CC BY 4.0; cropped.

8 positions in four pressure ranges; transparent polysulfone body. No magnetic lock — the most MRI-sensitive current valve.

Mechanism	Ball-in-cone; magnetic rotor drives a flat spring; two safety stops.
Measured as	Calibrated at 10 mL/h, valve alone.
Tolerance	−10 / +15 mmH2O
MRI	MR Conditional 1.5/3 T but NO magnetic lock — high risk of accidental change — Check the setting before AND after every MRI (adjustment kit or X-ray).
X-ray ID	Two square magnets inside a faint round outline; arrow-shaped connectors. Radiopaque dots read the 8 positions directly; range dots left of the inlet (0–3) identify the range.
Adjustment	Sophy Mini Adjustment Kit (locator with range ring, compass, magnet).

SM8-140 (10–140) — 0 range dots

Position	mmH₂O	cmH₂O	mmHg
1	10	1.0	0.7
2	25	2.5	1.8
3	40	4.0	2.9
4	60	6.0	4.4
5	80	8.0	5.9
6	100	10.0	7.4
7	120	12.0	8.8
8	140	14.0	10.3

SM8 standard (30–200) — 1 dot

Position	mmH₂O	cmH₂O	mmHg
1	30	3.0	2.2
2	50	5.0	3.7
3	70	7.0	5.1
4	90	9.0	6.6
5	110	11.0	8.1
6	140	14.0	10.3
7	170	17.0	12.5
8	200	20.0	14.7

SM8-300 (50–300) — 2 dots

Position	mmH₂O	cmH₂O	mmHg
1	50	5.0	3.7
2	75	7.5	5.5
3	100	10.0	7.4
4	125	12.5	9.2
5	150	15.0	11.0
6	180	18.0	13.2
7	220	22.0	16.2
8	300	30.0	22.1

SM8-400 (80–400) — 3 dots

Position	mmH₂O	cmH₂O	mmHg
1	80	8.0	5.9
2	120	12.0	8.8
3	150	15.0	11.0
4	190	19.0	14.0
5	230	23.0	16.9
6	270	27.0	19.9
7	330	33.0	24.3
8	400	40.0	29.4

Practical points from the manufacturer

SM8-140 and SM8 can be paired with SiphonX (+200 mmH2O upright).

Sophy SM3

Programmable MRI may change the settingConvert ↗

Sophysa Sophy SM3 Adjustable Valve · Sophysa · Legacy

No openly licensed radiograph available yet.

Three-position Sophy valve.

Mechanism	Ball-in-cone; magnetic rotor on a flat spring.
Measured as	Calibrated at 10 mL/h.
Tolerance	−10 / +15 mmH2O
MRI	No magnetic lock — Check the setting before and after MRI.
X-ray ID	Studs on the right side mark the 3 rotor positions (Sophysa IFU).

Setting	mmH₂O	cmH₂O	mmHg
1	50	5.0	3.7
2	110	11.0	8.1
3	170	17.0	12.5

Sophysa — Sophy valve IFU (NT110_ML_SD Rev000, 2019-10)

proGAV 2.0

Programmable MRI: no setting changeConvert ↗

Miethke proGAV 2.0 (B. Braun / Aesculap) · Miethke · Current

Radiograph of a Miethke proGAV 2.0 (B. Braun / Aesculap) — X-ray: Vach M, Weiss D, Ivan VL, et al. *Clin Neuroradiol* 2025;35:347–354, Fig. 2 — CC BY 4.0; cropped.

More radiograph examples of a Miethke proGAV 2.0 (B. Braun / Aesculap) — X-ray: Vach M, Weiss D, Ivan VL, et al. *Clin Neuroradiol* 2025;35:347–354, Fig. 2 — CC BY 4.0; cropped.

Adjustable differential-pressure unit (0–20 cmH2O) with an optional integrated SHUNTASSISTANT 2.0 gravitational unit (10–35 cmH2O). Lying = DP setting; upright = DP + gravitational unit.

Mechanism	Titanium; ball-cone DP unit with bow spring on a braked rotor + tantalum-ball gravitational unit.
Range	DP 0–20 cmH2O in 1-cmH2O steps (factory preset 5) · gravitational unit none / 10 / 15 / 20 / 25 / 30 / 35 cmH2O
Measured as	Opening pressures in cmH2O; gravitational-unit values referenced to 5 mL/h (~1–2 cmH2O higher at 20 mL/h).
Tolerance	Not stated in the IFU excerpt
MRI	MR Conditional ≤3 T — no setting change — Miethke: verification after MRI is not required.
X-ray ID	Round titanium valve; four rotor magnets show as white dots in opposite pairs. Two black burr holes mark the rotor's rear; the gap between the two front magnets (triangle apex) points to the setting. A side recess marks orientation so the scale is not read mirror-image; the gravitational unit carries a coded pressure marking.
Adjustment	proGAV 2.0 Compass (locate/read), Adjustment Tool, Checkmate, or M.blue plus instruments. Light pressure releases the rotor brake (click).

Adjustable DP unit — adjustable

cmH₂O	mmH₂O	mmHg
0	0	0.0
1	10	0.7
2	20	1.5
3	30	2.2
4	40	2.9
5	50	3.7
6	60	4.4
7	70	5.1
8	80	5.9
9	90	6.6
10	100	7.4
11	110	8.1
12	120	8.8
13	130	9.6
14	140	10.3
15	150	11.0
16	160	11.8
17	170	12.5
18	180	13.2
19	190	14.0
20	200	14.7

Gravitational unit (fixed at implant; 0 = none) — fixed at implant

cmH₂O	mmH₂O	mmHg
0 (none)	0	0.0
10	100	7.4
15	150	11.0
20	200	14.7
25	250	18.4
30	300	22.1
35	350	25.7

Opening pressure: lying = DP unit · upright = DP unit + gravitational unit. Use the converter for any combination.

Practical points from the manufacturer

Change by ≤8 cmH2O per adjustment step — the rotor takes the short way (3 → 18 must go 3 → 11 → 18).
Implant the gravitational unit parallel to the body axis (retroauricular is fine; height doesn't matter).
Vibration (e.g., jogging) can transiently lower opening pressure by 25–35% (lab data).

proGAV (1st generation)

Programmable MRI: no setting changeConvert ↗

Miethke proGAV · Miethke · Legacy (superseded by proGAV 2.0)

Radiograph of a Miethke proGAV — X-ray: Rhomberg T, Trivik-Barrientos F, Hakim A, Raabe A, Murek M. *Acta Neurochir* 2024;166:69, Fig. 1B — CC BY 4.0; tiles cropped and joined.

The first adjustable gravitational valve: adjustable DP unit 0–20 cmH2O with an optional integrated SHUNTASSISTANT.

Mechanism	Titanium ball-cone DP unit on an adjustable rotor + tantalum-ball gravitational unit.
Range	DP 0–20 cmH2O · gravitational unit none / 10 / 15 / 20 / 25 / 30 / 35 cmH2O (20 and 25 are the standard levels)
Measured as	Opening pressures in cmH2O.
Tolerance	Not stated
MRI	MR Conditional ≤3 T — no setting change — Miethke: verification after MRI is not required.
X-ray ID	Round titanium valve with a central rotor; the rotor position is read against the scale (0–20 cmH2O).
Adjustment	proGAV Verification Tool, Adjustment Tool, Checkmate.

Adjustable DP unit — adjustable

cmH₂O	mmH₂O	mmHg
0	0	0.0
1	10	0.7
2	20	1.5
3	30	2.2
4	40	2.9
5	50	3.7
6	60	4.4
7	70	5.1
8	80	5.9
9	90	6.6
10	100	7.4
11	110	8.1
12	120	8.8
13	130	9.6
14	140	10.3
15	150	11.0
16	160	11.8
17	170	12.5
18	180	13.2
19	190	14.0
20	200	14.7

Gravitational unit (fixed at implant; 0 = none) — fixed at implant

cmH₂O	mmH₂O	mmHg
0 (none)	0	0.0
10	100	7.4
15	150	11.0
20	200	14.7
25	250	18.4
30	300	22.1
35	350	25.7

Opening pressure: lying = DP unit · upright = DP unit + gravitational unit. Use the converter for any combination.

Practical points from the manufacturer

Miethke starting levels: DP 5 cmH2O (NPH standard); gravitational unit 20 (children ≤5 y, adults >60 y) or 25 (children >5 y, adults ≤60 y); −5 if <1.60 m, +5 if >1.80 m; bedridden → no gravitational unit.

M.blue

Programmable MRI: no setting changeConvert ↗

Miethke M.blue Adjustable Gravitational Valve (B. Braun / Aesculap) · Miethke · Current

No openly licensed radiograph available yet.
No openly licensed radiograph yet — see Miethke's M.blue radiographic guide (brochure p. 19) ↗

One titanium valve combining a FIXED differential-pressure unit (0, 5, 10 or 15 cmH2O) with an ADJUSTABLE gravitational unit (0–40 cmH2O). Lying = DP unit; upright = DP + gravitational setting. It is an integrated valve, not an add-on.

Mechanism	Fixed ball-cone DP unit + adjustable gravitational unit (tantalum weight, sapphire ball, braked rotor); Active-Lock against everyday magnets.
Range	Fixed DP unit 0 / 5 / 10 / 15 cmH2O (FX800T–FX803T) · gravitational unit continuously adjustable 0–40 cmH2O
Measured as	Opening pressures in cmH2O; intermediate body angles give graded values.
Tolerance	Not stated in the brochure
MRI	MR Conditional ≤3 T — no setting change; Active-Lock — Miethke: no X-ray verification after MRI needed.
X-ray ID	Round titanium valve; gravitational coding holes every 4 cmH2O (0–40) around the rim, with a triangular tip pointing at the set value and a non-adjustable sector between 40 and 0. Coding burr holes at the outlet give the DP unit: none = 0, one = 5, two = 10, three = 15 cmH2O.
Adjustment	M.blue plus instruments: compass with floater (locate + read), adjustment ring (light pressure releases the rotor brake).

Fixed DP unit (chosen at implant) — fixed at implant

cmH₂O	mmH₂O	mmHg
0	0	0.0
5	50	3.7
10	100	7.4
15	150	11.0

Adjustable gravitational unit — adjustable

cmH₂O	mmH₂O	mmHg
0	0	0.0
4	40	2.9
8	80	5.9
12	120	8.8
16	160	11.8
20	200	14.7
24	240	17.7
28	280	20.6
32	320	23.5
36	360	26.5
40	400	29.4

Continuously adjustable; every 4 cmH₂O shown (the dial's marked increments).

Opening pressure: lying = DP unit · upright = DP unit + gravitational unit. Use the converter for any combination.

Practical points from the manufacturer

Miethke starting levels (DP 5 for all; upright total in brackets): <5 y grav 20 (25); ≥5 y 25 (30); adults 25 (30) [<1.60 m 20 (25); >1.80 m 30 (35)]; adults >65 y 20 (25) [<1.60 m 15 (20); >1.80 m 25 (30)]. Lower the gravitational unit for low mobility or high BMI.

M.blue plus

Programmable MRI: no setting changeConvert ↗

Miethke M.blue plus (M.blue + proGAV 2.0 adjustable DP unit) · Miethke · Current

No openly licensed radiograph available yet.
See Miethke M.blue brochure ↗

Both units adjustable: proGAV 2.0 DP unit (0–20 cmH2O) + M.blue gravitational unit (0–40 cmH2O).

Mechanism	Adjustable ball-cone DP unit + adjustable gravitational unit, both braked rotors.
Range	DP 0–20 cmH2O + gravitational 0–40 cmH2O (FX804T)
Measured as	Opening pressures in cmH2O.
Tolerance	Not stated
MRI	MR Conditional ≤3 T — no setting change — Miethke: no verification after MRI needed.
X-ray ID	Two round titanium units in series: the proGAV 2.0-type DP rotor and the M.blue gravitational dial.
Adjustment	M.blue plus instruments adjust both units.

Adjustable DP unit — adjustable

cmH₂O	mmH₂O	mmHg
0	0	0.0
1	10	0.7
2	20	1.5
3	30	2.2
4	40	2.9
5	50	3.7
6	60	4.4
7	70	5.1
8	80	5.9
9	90	6.6
10	100	7.4
11	110	8.1
12	120	8.8
13	130	9.6
14	140	10.3
15	150	11.0
16	160	11.8
17	170	12.5
18	180	13.2
19	190	14.0
20	200	14.7

Adjustable gravitational unit — adjustable

cmH₂O	mmH₂O	mmHg
0	0	0.0
4	40	2.9
8	80	5.9
12	120	8.8
16	160	11.8
20	200	14.7
24	240	17.7
28	280	20.6
32	320	23.5
36	360	26.5
40	400	29.4

Continuously adjustable; every 4 cmH₂O shown (the dial's marked increments).

Opening pressure: lying = DP unit · upright = DP unit + gravitational unit. Use the converter for any combination.

Miethke — M.blue & M.blue plus brochure (EN)

proSA

Add-on device MRI: no setting change

Miethke proSA — programmable SHUNTASSISTANT · Miethke · Current

No openly licensed radiograph available yet.
See Miethke proSA IFU ↗

Add-on ADJUSTABLE gravitational unit (0–40 cmH2O) implanted in series below a differential-pressure valve. Open when lying; adds its setting when upright.

Mechanism	Tantalum weight + sapphire ball; bow-spring pretension set by a braked rotor.
Range	0–40 cmH2O (preset 20); Miethke recommends pairing with a 5 cmH2O DP unit
Measured as	cmH2O.
Tolerance	Not stated
MRI	MR Conditional ≤3 T — no setting change — Miethke: verification after MRI is not required.
X-ray ID	The rotor tip indicates the setting; a cut-out in the casing ring marks orientation.
Adjustment	proSA Verification Tool + Adjustment Tool / Checkmate (masterdisc to check the tool).

Adjustable gravitational unit — adjustable

cmH₂O	mmH₂O	mmHg
0	0	0.0
4	40	2.9
8	80	5.9
12	120	8.8
16	160	11.8
20	200	14.7
24	240	17.7
28	280	20.6
32	320	23.5
36	360	26.5
40	400	29.4

Continuously adjustable; every 4 cmH₂O shown (the dial's marked increments).

Miethke — proSA IFU (IFU_38 V09)

Hakim Precision (fixed)

Fixed No setting to changeConvert ↗

Codman HAKIM Precision Fixed Pressure Valve · Integra (Codman) · Current

Radiograph of a Codman HAKIM Precision Fixed Pressure Valve — X-ray: Rhomberg T, Trivik-Barrientos F, Hakim A, Raabe A, Murek M. *Acta Neurochir* 2024;166:69, Fig. 1B — CC BY 4.0; tiles cropped and joined.

Fixed ball-in-cone valve in five pressure ranges; cylindrical, in-line, right-angle and micro housings; optional SiphonGuard, Rickham reservoir, Bactiseal catheters.

Mechanism	Ruby ball-in-cone with fixed spring.
Measured as	Operating pressure printed on the FDA device label.
Tolerance	±10 mmH2O
MRI	Fixed valve — no setting to change — No setting check needed.
X-ray ID	Small metallic ball-in-cone housing; no adjustable cam or rotor.

Setting	mmH₂O	cmH₂O	mmHg	Tolerance
Very Low	10	1.0	0.7	±10
Low	40	4.0	2.9	±10
Medium Low	70	7.0	5.1	±10
Medium High	100	10.0	7.4	±10
High	130	13.0	9.6	±10

Practical points from the manufacturer

Some newer labels read only 'Medium Range' without a number — check the package label or implant record.

FDA GUDID / openFDA device labels — CODMAN HAKIM Precision Fixed Pressure Valve

Delta valve

Fixed No setting to changeConvert ↗

Medtronic PS Medical Delta Valve · Medtronic (PS Medical) · Current

Radiograph of a Medtronic PS Medical Delta Valve — X-ray: Rhomberg T, Trivik-Barrientos F, Hakim A, Raabe A, Murek M. *Acta Neurochir* 2024;166:69, Fig. 1B — CC BY 4.0; tiles cropped and joined.

Fixed performance-level membrane valve with an integral Delta chamber; regular, small and neonatal sizes. Non-metallic.

Mechanism	Membrane valve (polypropylene + silicone) + normally closed Delta chamber ('hydrodynamic leverage').
Measured as	Median pressure at 5 → 50 mL/h; lying = 0, upright = −50 cmH2O hydrostatic. Nominal = midpoint.
Tolerance	Not stated
MRI	Non-metallic — no MRI/CT interference — No setting check needed.
X-ray ID	Valve body is essentially radiolucent — look for the radiopaque arrow/dot code: PL 0.5 = bar + arrow, 1.0 = single arrow, 1.5 = dot + arrow, 2.0 = double arrow.

Setting	Lying mmH₂O	cmH₂O	mmHg	Range (mmH₂O)	Upright mmH₂O	Upright mmHg
PL 0.5	20	2.0	1.5	15–25	40 (30–50)	2.9
PL 1.0	45	4.5	3.3	35–55	60 (50–70)	4.4
PL 1.5	80	8.0	5.9	70–90	95 (85–105)	7.0
PL 2.0	115	11.5	8.5	105–125	130 (120–140)	9.6

Medtronic — CSF Management product catalog (UC201709479bEN, ©2020), p. 11

CSF-Flow Control (PS Medical)

Fixed No setting to changeConvert ↗

Medtronic PS Medical CSF-Flow Control Valves (contoured, burr hole, ultra small) · Medtronic (PS Medical) · Current

No openly licensed radiograph available yet.
No openly licensed radiograph yet — see Medtronic catalog p. 14 ↗

Classic fixed differential-pressure membrane valves in four ranges, identified by a dot code.

Mechanism	Membrane valve (polypropylene + silicone); non-metallic.
Measured as	Median pressure at 5 → 50 mL/h; nominal = midpoint.
Tolerance	Not stated
MRI	Non-metallic — no MRI/CT interference — No setting check needed.
X-ray ID	Radiolucent body; radiopaque dot code: Low-Low none, Low 1 dot, Medium 2 dots, High 3 dots.

Setting	mmH₂O	cmH₂O	mmHg	Range (mmH₂O)
Low-Low	20	2.0	1.5	10–30
Low	37.5	3.8	2.8	30–45
Medium	95	9.5	7.0	85–105
High	157.5	15.8	11.6	145–170

Medtronic — CSF Management product catalog (UC201709479bEN, ©2020), p. 14

Sophy Mini SM1

Fixed No setting to changeConvert ↗

Sophysa Sophy Mini SM1 Monopressure Valve · Sophysa · Current

No openly licensed radiograph available yet.
See Sophysa SM1 brochure ↗

Low-profile fixed ball-in-cone valve in three pressures; A = antechamber, B = burr-hole reservoir.

Mechanism	Ball-in-cone, fixed.
Measured as	Sophysa labelled pressure.
Tolerance	Not stated in the brochure
MRI	Monopressure — no setting to change (artifact ~9–12 mm) — No setting check needed.
X-ray ID	Small low-profile valve; much smaller artifact than the adjustable Sophysa valves.

Setting	mmH₂O	cmH₂O	mmHg
L (Low)	50	5.0	3.7
M (Medium)	110	11.0	8.1
H (High)	170	17.0	12.5

Sophysa — Sophy Mini SM1 brochure (2026)

GAV 2.0

Fixed No setting to changeConvert ↗

Miethke GAV 2.0 Gravitational Assisted Valve · Miethke · Current

No openly licensed radiograph available yet.
See Miethke GAV 2.0 IFU ↗

Fixed ball-cone DP unit + fixed gravitational unit in one titanium valve; six lying/upright combinations.

Mechanism	Ball-cone (spring) unit + tantalum-ball gravitational unit.
Measured as	cmH2O.
Tolerance	Not stated
MRI	MR Conditional ≤3 T; fixed — No setting check needed.
X-ray ID	Titanium valve; pressure-level coding visible on X-ray.

Setting	Lying mmH₂O	cmH₂O	mmHg	Upright mmH₂O	Upright mmHg
5 / 20	50	5.0	3.7	200	14.7
5 / 25	50	5.0	3.7	250	18.4
5 / 30	50	5.0	3.7	300	22.1
5 / 35	50	5.0	3.7	350	25.7
10 / 25	100	10.0	7.4	250	18.4
10 / 30	100	10.0	7.4	300	22.1

Miethke — GAV 2.0 IFU (IFU_61 V04)

GAV (classic)

Fixed No setting to changeConvert ↗

Miethke GAV Gravitational Assisted Valve · Miethke · Legacy

No openly licensed radiograph available yet.
See Miethke GAV IFU ↗

Original gravitational assisted valve; six lying/upright combinations measured at 5 mL/h.

Mechanism	Ball-cone unit + tantalum-ball gravitational unit (titanium).
Measured as	Pressure drop at 5 mL/h (cmH2O).
Tolerance	Not stated
MRI	MR Conditional ≤3 T; fixed — No setting check needed.
X-ray ID	Titanium valve with an X-ray pressure code (e.g., the IFU's example image is the 10/40 cmH2O model).

Setting	Lying mmH₂O	cmH₂O	mmHg	Upright mmH₂O	Upright mmHg
5 / 30	50	5.0	3.7	300	22.1
5 / 35	50	5.0	3.7	350	25.7
5 / 40	50	5.0	3.7	400	29.4
10 / 30	100	10.0	7.4	300	22.1
10 / 40	100	10.0	7.4	400	29.4
10 / 50	100	10.0	7.4	500	36.8

Practical points from the manufacturer

Choose the upright pressure from the height difference between the third ventricle and the diaphragm (Miethke).

Miethke — GAV IFU (IFU_60 V13)

paediGAV

Fixed No setting to changeConvert ↗

Miethke paediGAV · Miethke · Current

No openly licensed radiograph available yet.
See Miethke paediGAV IFU ↗

Pediatric gravitational assisted valve; six lying/upright combinations (coding rings).

Mechanism	Ball-cone (spiral spring) unit + gravitational unit.
Measured as	cmH2O.
Tolerance	Not stated
MRI	MR Conditional ≤3 T; fixed — No setting check needed.
X-ray ID	Coding rings identify the pressure combination.

Setting	Lying mmH₂O	cmH₂O	mmHg	Upright mmH₂O	Upright mmHg
4 / 14	40	4.0	2.9	140	10.3
4 / 19	40	4.0	2.9	190	14.0
4 / 24	40	4.0	2.9	240	17.7
9 / 19	90	9.0	6.6	190	14.0
9 / 24	90	9.0	6.6	240	17.7
9 / 29	90	9.0	6.6	290	21.3

Practical points from the manufacturer

Miethke recommendations: <6 months 4/24; 6 months–5 years 9/24; >5 years 9/29 cmH2O.

Miethke — paediGAV IFU (GBA_40_16_1120)

DualSwitch Valve (DSV)

Fixed No setting to changeConvert ↗

Miethke DUALSWITCH VALVE · Miethke · Current

No openly licensed radiograph available yet.
See Miethke DSV IFU ↗

Two parallel chambers — a low-pressure chamber active lying and a high-pressure chamber active upright — switched by a tantalum ball.

Mechanism	Titanium; two spring-loaded discs on silicone membranes; tantalum-ball switch.
Range	Lying 5 / 10 (standard) / 13 / 16 cmH2O · upright 30 / 40 / 50 cmH2O
Measured as	Horizontal ratings at 20 mL/h (cmH2O).
Tolerance	Not stated
MRI	MR Conditional ≤3 T; fixed — No setting check needed.
X-ray ID	Low-pressure code sits next to the ball switch (white dot); the high-pressure code is farther from it.

Low-pressure (lying) chamber — fixed at implant

cmH₂O	mmH₂O	mmHg
5	50	3.7
10	100	7.4
13	130	9.6
16	160	11.8

High-pressure (upright) chamber — fixed at implant

cmH₂O	mmH₂O	mmHg
30	300	22.1
40	400	29.4
50	500	36.8

Opening pressure: lying = low-pressure chamber · upright = high-pressure chamber.

Practical points from the manufacturer

Pick the high side just above (Monro-to-diaphragm distance − 5 cm) so standing IVP stays −5 to +5 cmH2O (Miethke).

Miethke — DUALSWITCH VALVE IFU (IFU_01 V10)

miniNAV

Fixed No setting to changeConvert ↗

Miethke miniNAV · Miethke · Current

No openly licensed radiograph available yet.
See Miethke miniNAV brochure ↗

Smallest Miethke differential-pressure valve (premature/newborn infants, bedridden patients); combine with a SHUNTASSISTANT/proSA for active patients.

Mechanism	Ball + spring in a slim titanium shell.
Measured as	cmH2O.
Tolerance	Not stated
MRI	MR Conditional ≤3 T; fixed — No setting check needed.
X-ray ID	Pressure coded by the valve-end shapes (e.g., concave proximal + convex distal = 5 cmH2O).

Setting	mmH₂O	cmH₂O	mmHg
0	0	0.0	0.0
5	50	5.0	3.7
10	100	10.0	7.4
15	150	15.0	11.0

Miethke — miniNAV brochure (EN)

Integra DP

Fixed No setting to change

Integra DP Valve System · Integra · Legacy (many SKUs no longer in US distribution)

Radiograph of a Integra DP Valve System — X-ray: Rhomberg T, Trivik-Barrientos F, Hakim A, Raabe A, Murek M. *Acta Neurochir* 2024;166:69, Fig. 1B — CC BY 4.0; tiles cropped and joined.

Fixed differential-pressure valve with two ruby ball-in-cone mechanisms in series (stainless steel housings); colour-coded pressure ranges; the very-low (blue band) model is for hygroma / extraventricular drainage.

Mechanism	Two ball-in-cone mechanisms in series.
MRI	Fixed valve — No setting check needed.
X-ray ID	Two small metallic in-line housings (the paired ball-in-cone mechanisms).
Converter	Not convertible — No publicly accessible manufacturer document gives the numeric pressure for each colour band — check the implant record / package label.

FDA 510(k) K152897 — Integra DP Valve Systems / Gravity Compensating Accessory

Spitz-Holter

Fixed No setting to change

Spitz-Holter valve (historic, 1956) · Holter (later Integra) · Historic

Radiograph of a Spitz-Holter valve (historic, 1956) — X-ray: Rhomberg T, et al. *Acta Neurochir* 2024;166:69, Fig. 1B row (j) — CC BY 4.0; cropped. The source caption labels row (j) "Codman Certas Plus", duplicating row (a); the study's 10 classes include the Integra Spitz-Holter, which this cylindrical in-line valve matches.

Historic in-line slit valve still seen on films of long-shunted patients.

Mechanism	Silicone slit valves in a cylindrical housing with metal end fittings.
MRI	Fixed valve — No setting check needed.
X-ray ID	Cylindrical in-line valve with metal end segments, often just below a burr-hole reservoir ring.
Converter	Not convertible — Historic device; no current manufacturer pressure documentation.

SHUNTASSISTANT 2.0 (SA 2.0)

Add-on device No setting to change

Miethke SHUNTASSISTANT 2.0 · Miethke · Current

No openly licensed radiograph available yet.
See Miethke SA 2.0 IFU ↗

Add-on FIXED gravitational unit implanted in series with any conventional or adjustable DP valve. Open lying; adds its rating upright.

Mechanism	Titanium housing, heavy tantalum ball over a sapphire locking ball.
Measured as	Referenced to 5 mL/h (~1–2 cmH2O higher at 20 mL/h).
Tolerance	Not stated
MRI	MR Conditional ≤3 T; fixed — No setting check needed.
X-ray ID	Small titanium cylinder; pressure level coded on X-ray.

Setting	Adds upright	mmHg
10	+100 mmH₂O (10.0 cmH₂O)	+7.4
15	+150 mmH₂O (15.0 cmH₂O)	+11.0
20	+200 mmH₂O (20.0 cmH₂O)	+14.7
25	+250 mmH₂O (25.0 cmH₂O)	+18.4
30	+300 mmH₂O (30.0 cmH₂O)	+22.1
35	+350 mmH₂O (35.0 cmH₂O)	+25.7

Practical points from the manufacturer

Implant parallel to the body axis: chest wall in adults, behind the ear in children; abdomen/back for LP shunts.

Miethke — SHUNTASSISTANT 2.0 IFU (IFU_34 V04)

SHUNTASSISTANT / paediSHUNTASSISTANT

Add-on device No setting to change

Miethke SHUNTASSISTANT (original) and paediSHUNTASSISTANT · Miethke · Legacy

No openly licensed radiograph available yet.
See Miethke SHUNTASSISTANT IFU ↗

Original add-on gravitational unit (15–35 cmH2O) and the smaller pediatric version (10 cmH2O).

Mechanism	Titanium casing, weight ball, sealing ball.
Measured as	Referenced to 5 mL/h (~1–2 cmH2O higher at 20 mL/h).
Tolerance	Not stated
MRI	MR Conditional ≤3 T; fixed — No setting check needed.
X-ray ID	Ring-coded titanium cylinder; on a supine film the tantalum ball sits a little farther from its seat than on a standing film.

Setting	Adds upright	mmHg
paediSA 10	+100 mmH₂O (10.0 cmH₂O)	+7.4
15	+150 mmH₂O (15.0 cmH₂O)	+11.0
20	+200 mmH₂O (20.0 cmH₂O)	+14.7
25	+250 mmH₂O (25.0 cmH₂O)	+18.4
30	+300 mmH₂O (30.0 cmH₂O)	+22.1
35	+350 mmH₂O (35.0 cmH₂O)	+25.7

Practical points from the manufacturer

Miethke sizing method: (DP valve + SA) ≈ (diaphragm → foramen of Monro distance) − 5 cm. Example: 42 cm, DP 13 → choose SA 25 → standing IVP ≈ −4 cmH2O.

Miethke — paediSHUNTASSISTANT / SHUNTASSISTANT IFU (IFU_30 V11)

SiphonX

Add-on device No setting to change

Sophysa SiphonX gravitational anti-siphon device (SX-200) · Sophysa · Current

No openly licensed radiograph available yet.
See Sophysa SiphonX brochure ↗

Add-on gravitational anti-siphon device placed downstream of a valve: +200 mmH2O fully upright, 0 lying, angle-dependent in between; not affected by implant height.

Mechanism	Ball-in-cone; tantalum weight ball presses on a ruby ball.
Measured as	Same curve for 5–50 mL/h.
Tolerance	Not stated
MRI	MR Conditional with Polaris/Sophy systems; fixed — No setting check needed.
X-ray ID	Small in-line device distal to the valve (pre-attached on Polaris -SX models).

Setting	Adds upright	mmHg
SX-200	+200 mmH₂O (20.0 cmH₂O)	+14.7

SiphonGuard

Add-on device No setting to change

Codman SIPHONGUARD Anti-Siphon Device · Integra (Codman) · Current

No openly licensed radiograph available yet.

FLOW-activated (not posture-activated) anti-siphon device integrated into some Hakim, Hakim Precision and CERTAS Plus valves.

Mechanism	Dual pathway: a surge in flow closes the central ruby ball-and-cone, forcing all CSF through a long spiral secondary path (resistance 1 cmH2O per mL/h); it reopens when flow falls and never fully stops.
MRI	No setting
X-ray ID	Rigid in-line chamber distal to the valve mechanism.
Converter	Not convertible — Adds flow-dependent resistance, not a fixed upright pressure. Does not activate at low CSF flow.

Practical points from the manufacturer

Prime slowly (~0.5 mL/min) — fast priming can trigger the closed (secondary-path) state.
Any orientation and body location distal to the valve mechanism is allowed.

Integra — HAKIM Programmable Valve L-P IFU (Rev E, 11/2020)

Gravity Compensating Accessory

Add-on device No setting to change

Integra Gravity Compensating Accessory (GCA) · Integra · Legacy

No openly licensed radiograph available yet.

Posture-activated add-on placed anywhere along the distal tubing: a ruby ball held on its seat (when vertical) by two to four stainless steel balls; each ball adds resistance upright, minimal resistance lying.

Mechanism	Stainless steel housing in silicone; 2–4 steel balls load a ruby ball.
MRI	No setting
X-ray ID	Small cylinder on the distal tubing containing a column of 2–4 metal balls.
Converter	Not convertible — The FDA summary gives the mechanism but not the added pressure per ball count.

FDA 510(k) K152897

OSV II (flow-regulating)

Flow-regulated No setting to change

Integra OSV II Valve System (and Flow Regulating Valve Low Flow) · Integra · Current

No openly licensed radiograph available yet.

Flow-regulating valve designed to drain close to CSF secretion (18–30 mL/h) rather than at a set opening pressure.

Mechanism	Variable-resistance pin-and-seat flow regulator; three stages; mechanism has no metal.
Measured as	Stage I: opens at ~5 mL/h (ΔP 30–80 mmH2O), stays in stage I to 18 mL/h (ΔP 40–120). Stage II: holds 18–30 mL/h over ΔP 120–300. Stage III: pressure-relief mode for abrupt ICP rise.
MRI	MR Conditional ≤3 T (max gradient 3500 G/cm); flow characteristics unaffected — No setting.
X-ray ID	Low Flow model has a black radiopaque flow-direction arrow that distinguishes it from OSV II.
Converter	Not convertible — Regulates flow, not opening pressure — no setting maps to a single pressure.

Practical points from the manufacturer

OSV II for drainage ≈ CSF secretion (18–30 mL/h); Low Flow model for 8–17 mL/h.

Integra — OSV II Valve System IFU (BL515010 Rev A, 2022-10)

M.flow

Flow-regulated MRI: no setting change

Miethke M.flow adjustable flow-reducing unit · Miethke · Current

No openly licensed radiograph available yet.

Adjustable FLOW-RESISTANCE unit with a full shunt switch-off range, used together with M.blue.

Mechanism	Rotor aperture sets the effective length of a circular flow channel (= resistance); a channel interruption gives 'shunt off'.
MRI	MR Conditional ≤3 T — no setting change — Miethke: verification after MRI is not required.
X-ray ID	Titanium unit with a rotor; combined with an M.blue.
Converter	Not convertible — Sets flow resistance, not an opening pressure.

Miethke — M.flow IFU (IFU_18 V2.1)

Every valve, every setting — in mmH₂O, cmH₂O and mmHg

CERTAS Plus

Hakim Programmable (CHPV)

Strata II (with Delta chamber)

Strata NSC (no siphon control)

StrataMR II

Polaris (SPV)

Sophy Mini SM8

Sophy SM3

proGAV 2.0

proGAV (1st generation)

M.blue

M.blue plus

proSA

Hakim Precision (fixed)

Delta valve

CSF-Flow Control (PS Medical)

Sophy Mini SM1

GAV 2.0

GAV (classic)

paediGAV

DualSwitch Valve (DSV)

miniNAV

Integra DP

Spitz-Holter

SHUNTASSISTANT 2.0 (SA 2.0)

SHUNTASSISTANT / paediSHUNTASSISTANT

SiphonX

SiphonGuard

Gravity Compensating Accessory

OSV II (flow-regulating)

M.flow