Silicon micro machined occlusion implant

Claim 2

An occlusion implant for a very small body lumen comprising a unitary monocrystalline semiconductive disk having at least one integral spring loaded helical wing for frictionally contacting the wall of said lumen to maintain said disk in position and at the same time to also provide a small enough opening to prevent passage of unwanted fluid material downstream in said lumen.

Claim 3

An implant as in claim 1 where said disk is produced by micromachining semiconductor techniques.

Claim 4

An implant as in claim 1 where said disk consists of a bio-compatible material.

Claim 5

An implant as in claim 3 where said material is silicon.

Claim 6

An implant as in claim 4 where said disk is vertically stacked with similar disks with at least one intermediate silicon disk and forming a unified assembly by silicon wafer fusion bonding.

Claim 7

A catheter for insertion of a occlusion implant for a very small body lumen the implant having a unitary monocrystalline semiconductive disk having at least one integral spring loaded helical wing for frictionally contacting the wall of said lumen to maintain said disk in position and at the same time to also provide a small enough opening to prevent passage of unwanted fluid material downstream in said lumen, said catheter including a slidable collar on a distal end of said catheter for retaining said spring loaded helical wing of said disk, and means for sliding said collar toward a proximal end of said catheter to release said disk and allow said helical wing to expand against said wall of said lumen to contact said wall and to thereby maintain said disk in position.

Claim 8

A catheter for insertion of a occlusion implant for a very small body lumen the implant having a unitary monocrystalline semiconductive disk having at least one integral spring loaded helical wing for frictionally contacting the wall of said lumen to maintain said disk in position and at the same time to also provide a small enough opening to prevent passage of unwanted fluid material downstream in said lumen, said catheter including a slidable collar on a distal end of said catheter for retaining said spring loaded helical wing of said disk, and means for sliding said collar toward a proximal end of said catheter to release said disk and allow said helical wing to expand against said wall of said lumen to contact said wall and to thereby maintain said disk in position.

Claim 9

A process of installing an occlusion implant in a very small body lumen in the form of a unitary monocrystalline semiconductive disk having at least one integral spring loaded helical wing for frictionally contacting the wall of the lumen to maintain said disk in position comprising the following steps: a) providing a catheter having a slidable collar on a distal end; b) placing in said slidable collar said disk to thereby retain the spring wing of said disk; c) inserting said catheter in said lumen to a desired location; d) releasing said disk and said at least one helical wing of said disk for frictionally contacting the wall of said lumen by pulling back said collar toward a proximal end of said catheter.

Claim 10

A process of installing an occlusion implant in a very small body lumen in the form of a unitary monocrystalline semiconductive disk having at least one integral spring loaded helical wing for frictionally contacting the wall of the lumen to maintain said disk in position comprising the following steps: a) providing a catheter having a slidable collar on a distal end; b) placing in said slidable collar said disk to thereby retain the spring wing of said disk; c) inserting said catheter in said lumen to a desired location; d) releasing said disk and said at least one helical wing of said disk for frictionally contacting the wall of said lumen by pulling back said collar toward a proximal end of said catheter.

Claim 11

A stent for a blood vessel comprising a unitary monocrystalline silicon disk having at least one integral spring loaded helical wing for frictionally contacting the wall of said blood vessel to maintain said disk in position, said disk having a central opening to allow for circulation of blood.

Claim 12

A stent for a blood vessel comprising a unitary monocrystalline silicon disk having at least one integral spring loaded helical wing for frictionally contacting the wall of said blood vessel to maintain said disk in position, said disk having a central opening to allow for circulation of blood.

Claim 13

An occlusion implant for a very small body lumen comprising a unitary disk having at least one integral spring loaded helical wing for frictionally contacting the wall of said lumen to maintain said disk in position said at least one helical wing being compressed to form open interstices with said wing and said disk and said wall of said lumen said interstices providing a small enough opening to prevent passage of unwanted particle or fluid material downstream in said lumen, said entire at least one helical wing substantially lying in a common plane with said disk.

Claim 14

An occlusion implant for a very small body lumen comprising a unitary disk having at least one integral spring loaded helical wing for frictionally contacting the wall of said lumen to maintain said disk in position said at least one helical wing being compressed to form open interstices with said wing and said disk and said wall of said lumen said interstices providing a small enough opening to prevent passage of unwanted particle or fluid material downstream in said lumen, said entire at least one helical wing substantially lying in a common plane with said disk.

Claim 15

An implant as in claim 9 where said disk consists of metal or plastic.

Claim 16

An implant as in claim 10 where said disk is produced by the following process: a) etch a semiconductive material to form a micro mold, b) using the mold, cast or injection mold, said implant using metal or plastic.