SURGICAL IMPLANT AND METHOD

• US 20140309744A1
• Filed: 02/28/2012
• Published: 10/16/2014
• Est. Priority Date: 02/28/2011
• Status: Active Grant

• Current Assignee: Scimotana Pty., Ltd.
• Original Assignee: Scimotana Pty., Ltd.
• Inventors: Batty, Andrew, D'Urso, Paul
• Granted Patent: US 9,883,944 B2
• Time in Patent Office: Days
• US Class Current: 623/17.19
• CPC Class Codes: A61B 5/686 Permanently implanted devices, e.g. pacemakers, other stimulators, biochips A61B5/6861 takes precedence
• CPC Class Codes: A61F 13/12 specially adapted for the head or neck
• CPC Class Codes: A61F 2/0077 Special surfaces of prostheses, e.g. for improving ingrowth A61F2/30767 takes precedence
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• CPC Class Codes: A61F 2/2875 Skull or cranium A61F2/2803 and A61F2/3099 take precedence
• CPC Class Codes: A61F 2/484 Fluid means, i.e. hydraulic or pneumatic
• CPC Class Codes: A61F 2002/009 for hindering or preventing attachment of biological tissue
• CPC Class Codes: A61F 2002/30069 elastomeric
• CPC Class Codes: A61F 2002/3067 for data transfer
• CPC Class Codes: A61F 2002/30672 temporary
• CPC Class Codes: A61F 2002/30677 Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
• CPC Class Codes: A61F 2002/30932 for retarding or preventing ingrowth of bone tissue
• CPC Class Codes: A61F 2002/3096 trimmed or cut to a customised size
• CPC Class Codes: A61L 2300/404 Biocides, antimicrobial agents, antiseptic agents
• CPC Class Codes: A61L 2300/41 Anti-inflammatory agents, e.g. NSAIDs
• CPC Class Codes: A61L 31/06 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds A61L31/041 takes precedence
• CPC Class Codes: A61L 31/16 Biologically active materials, e.g. therapeutic substances A61L31/047 takes precedence
• CPC Class Codes: C08L 83/06 containing silicon bound to oxygen-containing groups C08L83/12 takes precedence

Abstract

A surgical implant, which in use, provides a barrier between layers of tissue such that tissue on one side of the implant does not adhere to tissue on the other side, the improvement comprising that the implant is made of suitably anatomically shaped surgically acceptable sheet material.

Claims

1. A temporary cranial repair barrier made from thin film sheet material that is flexible and preformed prior to use to conform to a curvature of a cranial contour, wherein in use the thin film sheet material is sufficiently flexible to enable the barrier to flex to accommodate brain swelling.

2. The barrier of claim 1, wherein the cranial contour is a contour of frontal or temporo-parietal regions of the cranium.

3. The barrier of claim 1, wherein the thin film sheet material is medical grade flexible silicone film.

4. The barrier of claim 1, wherein the thin film sheet material is reinforced in peripheral areas for suture retention or the thin film sheet material contains fixation sites that allow sutures screws or rivets to be used to secure the implant to the surrounding hard or soft tissues.

5. The barrier of claim 1, wherein the thin film sheet material incorporates one or more pharmaceutical compositions.

6. The barrier of claim 5, wherein the one or more pharmaceutical compositions include antibiotics or anti inflammatory compounds.

7. The barrier of claim 1, wherein the thin film sheet material incorporates monitoring probes.

8. The barrier of claim 7, wherein the monitoring probes have one or numerous monitoring functions selected from intracranial pressure, temperature, electroencephalometric, blood gas saturation, pH and microdialysis for biochemical monitoring.

9. The barrier of claim 1, wherein the thin film sheet material incorporates therapeutic delivery mechanisms or substances.

10. The barrier of claim 1, wherein the thin film sheet material further includes enclosed channels to deliver therapeutic substances to the brain and associated tissues via apertures or probes.

11. The barrier of claim 1, wherein the thin film sheet material further includes a closed system of channels that allow circulation of fluid to and from an external device incorporating a positive or negative pressure pump.

12. The barrier of claim 1, wherein the thin film sheet material further includes a network of channels that allow closed circulation of fluid to and from an external device incorporating a positive or negative pressure pump.

13. The barrier of claim 12, further including a semi-permeable membrane between the channels and the surface of the brain.

14. The barrier of claim 13, wherein the membrane is designed so that only substances with specific molecular weights may cross.

15. The barrier of claim 1, wherein the thin film sheet material comprises a scaffold and a network of channels to and from an incorporated port or reservoir.

16. The barrier of claim 15, wherein a port is accessed percutaneously via injection or through access apertures so that therapeutic substances and stem cells can be introduced to promote the formation of new bone to integrate the implant with the surrounding skull.

17. A surgical method including providing a barrier according to claim 1.