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US3577837A Expired / Lapsed US ⏱️ 0.0 years remaining

Subdermal tendon implant

Assignee: Individual
•
Filing: 1968-04-30
•
Granted: 1971-05-11
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Expires: 1988-04-30
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Abstract

Abstract A subdermal tendon implant for use in repairing and reconstructing tendons which is compatible with the human cellular structure and includes the process of making the implant. The subdermal implant is resistant to degeneration and substantially eliminates adhesions allowing full range of motion after healing and includes in its structure a flexible sheeting of chemically inert material sculptured to a desired size and shape and means for anchoring the implant to prevent it from moving axially along the tendon.

Inventors

  • 👤 Karl F Bader Jr

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 15:52
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; A61B; A61B90/00; A61B90/08; A61B2090/0815; A61B2090/0816; A61F2/30; A61F2/42; A61F2/4241; A61F2002/4243

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 130 words
A subdermal tendon implant for use in tendon surgery including: an elongated member having a smooth, nonwetting inferior surface and a smooth, nonwetting superior surface, said elongated member adapted to be positioned between a viable, constantly moving, damaged tendon and the surrounding body tissue, and being made from a flexible, substantially inert material that is compatible with human cellular structure; a mesh material bonded to only a portion of the inferior surface of the elongated member, said mesh material adapted to contact substantially immovable body tissue with the remaining smooth, nonwetting inferior surface adapted to contact the damaged tendon; and suture means for anchoring the implant to the substantially immovable body tissue to prevent it from moving axially along the constantly moving, damaged tendon during the early stages of healing.
Claim 2
Dependent Claim 130 words
A subdermal tendon implant for use in tendon surgery including: an elongated member having a smooth, nonwetting inferior surface and a smooth, nonwetting superior surface, said elongated member adapted to be positioned between a viable, constantly moving, damaged tendon and the surrounding body tissue, and being made from a flexible, substantially inert material that is compatible with human cellular structure; a mesh material bonded to only a portion of the inferior surface of the elongated member, said mesh material adapted to contact substantially immovable body tissue with the remaining smooth, nonwetting inferior surface adapted to contact the damaged tendon; and suture means for anchoring the implant to the substantially immovable body tissue to prevent it from moving axially along the constantly moving, damaged tendon during the early stages of healing.
Claim 3
Dependent Claim 20 words
The structure of claim 1 further characterized in that the elongated member is made from a reinforced, medical-grade silicon elastomer.
Claim 4
Dependent Claim 41 words
The structure of claim 1 further characterized in that the mesh material is made from a polyester netting adapted to cause fibroblastic infiltration through the mesh material securing the subdermal tendon implant to the substantially immovable body tissue by periosteal attachment.
Claim 5
Dependent Claim 43 words
The structure of claim 1 further characterized in that the elongated member is sculptured to form at each end a shackle portion linked together by a central portion, said mesh material being bonded only to the inferior surface of the shackle end portions.
Claim 6
Dependent Claim 134 words
The process of making a subdermal tendon implant from a flexible sheeting of substantially inert, nonreactive material having a smooth exterior surface, the process including the steps of: sculpturing the flexible sheeting to a desired size and shape; bonding a mesh material to at least a portion of one surface of the flexible sheeting; positioning the flexible sheeting with the bonded mesh material subcutaneously between a damaged tendon and the surrounding body tissue so that a portion of the smooth exterior surface of the sheeting material rests against the damaged tendon and the portion of the surface containing the mesh material rests against substantially immovable body tissue; and fixedly securing the flexible sheeting with the bonded mesh material to the substantially immovable body tissue to anchor the subdermal tendon implant for rapid fibrous fixation.
Claim 7
Dependent Claim 134 words
The process of making a subdermal tendon implant from a flexible sheeting of substantially inert, nonreactive material having a smooth exterior surface, the process including the steps of: sculpturing the flexible sheeting to a desired size and shape; bonding a mesh material to at least a portion of one surface of the flexible sheeting; positioning the flexible sheeting with the bonded mesh material subcutaneously between a damaged tendon and the surrounding body tissue so that a portion of the smooth exterior surface of the sheeting material rests against the damaged tendon and the portion of the surface containing the mesh material rests against substantially immovable body tissue; and fixedly securing the flexible sheeting with the bonded mesh material to the substantially immovable body tissue to anchor the subdermal tendon implant for rapid fibrous fixation.
Claim 8
Dependent Claim 23 words
The process as set forth in claim 5 further including the initial step of sculpturing the flexible sheeting to form an elongated member.
Claim 9
Dependent Claim 32 words
The process as set forth in claim 5 further including the initial step of sculpturing the flexible sheeting to form at each end a shackle portion linked together by a central portion.

References Cited (Backward Citations)

US3176316A Cited
US3461869A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-05-10 1974-11-09 1975-05-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-10 1978-11-09 1979-05-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-10 1982-11-09 1983-05-11 $7700.00 Window Closed / Lapsed

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