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Platinum nanocoating technology

Nitinol wire used in the Cocoon VSD Occluder is coated with Platinum atoms using nano fusion technology by plasma deposition

Raw nitinol
Platinum nanocoating
Platinum nanocoating makes the Cocoon VSD Occluder:
More radiopaque
Key highlights
  • Self-expanding, double disc device which with unique Platinum nanocoating
  • 4, 7, & 10 mm waist lengths available
  • Available in multiple lengths to match the types and locations of the ventricular septal defects to close membranous and muscular defects
  • Discs are filled with polypropylene fabric which assists thrombogenicity
  • Ability to recapture and redeploy*
  • Left ventricular disc diameter (Ø1)
  • Right ventricular disc diameter (Ø2)
  • Waist diameter (Ø3)
  • Waist length (L)

Thickness of the septum is considered for selecting the length of the device

*Recapture and redeployment is possible only if delivery cable is securely connected to the disc.

Technical specifications
Product Code Left ventricular disc diameter (Ø 1)
Right ventricular disc diameter (Ø 2 )
Waist diameter (Ø3)
Waist length (L)
Recommended for VSD size Accessory catalog number
COV0404 10 10 3.25 4 3 mm COV6F or COVII6F
COV0604 12 12 5.25 4 3.1 to 5 mm COV6F or COVII6F
COV0804 14 14 7.25 4 5.1 to 7 mm COV6F or COVII6F
COV1004 16 16 9.25 4 7.1 to 9 mm COV7F or COVII7F
COV1204 18 18 11.25 4 9.1 to 11 mm COV7F or COVII7F
COV0407 10 10 4 7 2 mm COV6F or COVII6F
COV0607 12 12 6 7 2.1 to 4 mm COV6F or COVII6F
COV0807 14 14 8 7 4.1 to 6 mm COV6F or COVII6F
COV1007 16 16 10 7 6.1 to 8 mm COV7F or COVII7F
COV1207 18 18 12 7 8.1 to 10 mm COV7F or COVII7F
COV0410 10 10 4 10 2 mm COV6F or COVII6F
COV0610 12 12 6 10 2.1 to 4 mm COV6F or COVII6F
COV0810 14 14 8 10 4.1 to 6 mm COV6F or COVII6F
COV1010 16 16 10 10 6.1 to 8 mm COV7F or COVII7F
COV1210 18 18 12 10 8.1 to 10 mm COV7F or COVII7F
Usable lengths of compatible accessories (cm)
Usable Length (cm)
  6F 7F
Sheath 83 83
Dilator 89 89
Loader 9 9
Delivery cable & sheath
Catalog number Description Diameter (inch) Length (cm)
Delivery cable 0.030 140
Delivery cable sheath ID OD 125
0.055 0.079
Delivery cable: View 1
Delivery cable: View 2
Delivery cable sheath
Preclinical studies*

Ventricular Septal Defect was created in swine models and subsequently implanted with a Cocoon VSD Occluder

Explants at 30 days show the device incorporated with tissues

Preclinical studies*

Echo images of the swine at a day 1 and day 30 showing the complete closure of the defect


VSD : Ventricular Septal Defect

*Data on SMT file.

#Recapture and redeployment is possible only if delivery cable is securely connected to the disc

Caution: This product is intended for use by or under the direction of a physician. Prior to use, refer to the "Instructions for use" supplied with these devices for indications, contraindications, side effects, suggested procedure warnings and precautions. As part of our continuous product development policy, we reserve the right to change product specifications without prior notification. Information contained herein is for distribution outside the USA & Japan.

Check the regulatory status of the device before distribution in areas where CE marking is not the regulation in force. Tests performed by and data on file at Sahajanand Medical Technologies Limited (SMT). Illustrations are artist’s representations only and should not be considered as engineering drawings or photographs. Photos on file at Sahajanand Medical Technologies Limited.

Cocoon VSD Occluder is manufactured by Vascular Innovations Co., Ltd. Thailand, a SMT group company. Cocoon is a trademark of Vascular Innovations Co., Ltd.

Cocoon range of occluders are currently not approved by USFDA and are not available for sale in USA.

Disclaimer: © 2022 Sahajanand Medical Technologies Limited – All rights reserved. Specifications are subject to modification, revision and improvement.