US3805300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tendon prosthesis
Assignee: Bayer Corp
•
Filing: 1972-07-28
•
Granted: 1974-04-23
•
Expires: 1992-07-28
Abstract
Abstract A tendon prosthesis for repair or replacement of a damaged or diseased natural tendon which comprises an elongated member made of biocompatible material having a central portion and two end sections at least one of which has a plurality of longitudinally arranged fenestrations for interweaving with a resected tendon to provide a strong, functional anastomosis. In one embodiment, the second end section of the prosthesis is formed of a pair of flexible cord-like members adapted to anchor the prosthesis to bone structure. In a second embodiment, both end sections include fenestrations allowing each end section to be secured to interwoven segments of a resected tendon.
Inventors
- 👤 Alonso M Tascon
- 👤 J Stubstad
- 👤 J Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:57
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; Y; Y10; Y10S; Y10S128/00; Y10S128/14; Y10S128/21
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
205 words
A tendon prosthesis for repair of a resected tendon within a living organism wherein the tendon is characterized by an elongated segment having a free end, comprising a. an elongated central portion formed of flexible, biocompatible material; b. a first end portion connected with one end of said elongated central portion, said first end portion including first connective means for securing said first end portion within the living organism; and c. a second end portion connected with the other end of said elongated central portion, said second end portion including second connective means for connecting the second end portion with the resected tendon by permitting the elongated segment of the resected tendon to be interwoven through said second end portion, said second connective means including a plurality of longitudinally spaced fenestrations formed in said second end portion, each said fenestration passing completely through said second end portion from one side to the other, each said fenestration further being of sufficient size to permit the elongated segment of the resected tendon to pass therethrough, whereby the free end of the elongated segment may be interwoven with said second connective means by being passed back and forth through said longitudinally spaced fenestrations of said second end portion.
Claim 2
Dependent Claim
205 words
A tendon prosthesis for repair of a resected tendon within a living organism wherein the tendon is characterized by an elongated segment having a free end, comprising a. an elongated central portion formed of flexible, biocompatible material; b. a first end portion connected with one end of said elongated central portion, said first end portion including first connective means for securing said first end portion within the living organism; and c. a second end portion connected with the other end of said elongated central portion, said second end portion including second connective means for connecting the second end portion with the resected tendon by permitting the elongated segment of the resected tendon to be interwoven through said second end portion, said second connective means including a plurality of longitudinally spaced fenestrations formed in said second end portion, each said fenestration passing completely through said second end portion from one side to the other, each said fenestration further being of sufficient size to permit the elongated segment of the resected tendon to pass therethrough, whereby the free end of the elongated segment may be interwoven with said second connective means by being passed back and forth through said longitudinally spaced fenestrations of said second end portion.
Claim 3
Dependent Claim
23 words
A tendon prosthesis as defined in claim 1 wherein the surface of said elongated central portion includes means resistant to living tissue ingrowth.
Claim 4
Dependent Claim
14 words
forming a plurality of longitudinally spaced fenestrations within one end portion of the prosthesis;
Claim 5
Dependent Claim
14 words
forming a plurality of longitudinally spaced fenestrations within one end portion of the prosthesis;
Claim 6
Dependent Claim
12 words
anchoring the other end portion of the prosthesis within the living organism;
Claim 7
Dependent Claim
12 words
anchoring the other end portion of the prosthesis within the living organism;
Claim 8
Dependent Claim
24 words
A tendon prosthesis as defined in claim 1 including reinforcement means for reinforcing said elongated central portion and said first and second end portions.
Claim 9
Dependent Claim
25 words
A tendon prosthesis as defined in claim 3, wherein said reinforcement means includes fibers within said central portion and said first and second end portions.
Claim 10
Dependent Claim
34 words
preparing the remaining portion of natural tendon by forming at least one elongated end segment of natural tendon having a free end with a cross section sufficiently small to pass through each fenestration; and
Claim 11
Dependent Claim
34 words
preparing the remaining portion of natural tendon by forming at least one elongated end segment of natural tendon having a free end with a cross section sufficiently small to pass through each fenestration; and
Claim 12
Dependent Claim
29 words
interweaving the elongated end segment with the one end portion of the prosthesis by passing the free end of the elongated end segment back and forth through the fenestrations.
Claim 13
Dependent Claim
29 words
interweaving the elongated end segment with the one end portion of the prosthesis by passing the free end of the elongated end segment back and forth through the fenestrations.
Claim 14
Dependent Claim
34 words
A tendon prosthesis as defined in claim 4, wherein said fibers are formed of polyethylene terephthalate cord extending substantially the entire longitudinal length of said central portion and said first and second end portions.
Claim 15
Dependent Claim
123 words
A tendon prosthesis for repair or replacement of a natural tendon comprising an elongated central portion formed of flexible, biocompatible material, a first end portion integral with a first end of said central portion, said first end portion including first connective means for securing said first end portion, and a second enD portion integral with a second end of said central portion, said second end portion including second connective means for securing said second end to a segment of a natural tendon, said second connective means including a plurality of longitudinally spaced fenestrations formed in said second end portion for receiving the tendon segment, wherein the surface of said second end portion extending longitudinally between said fenestrations includes means receptive to tissue ingrowth.
Claim 16
Dependent Claim
123 words
A tendon prosthesis for repair or replacement of a natural tendon comprising an elongated central portion formed of flexible, biocompatible material, a first end portion integral with a first end of said central portion, said first end portion including first connective means for securing said first end portion, and a second enD portion integral with a second end of said central portion, said second end portion including second connective means for securing said second end to a segment of a natural tendon, said second connective means including a plurality of longitudinally spaced fenestrations formed in said second end portion for receiving the tendon segment, wherein the surface of said second end portion extending longitudinally between said fenestrations includes means receptive to tissue ingrowth.
Claim 17
Dependent Claim
26 words
A tendon prosthesis as defined in claim 4, wherein said first connective means is formed by an extension of said fibers beyond said first end portion.
Claim 18
Dependent Claim
25 words
A tendon prosthesis as defined in claim 7, wherein the portions of said fibers forming said extension are formed into at least one cord-like member.
Claim 19
Dependent Claim
25 words
A tendon prosthesis as defined in claim 8, wherein at least a portion of the surface of said cord-like member is receptive to tissue ingrowth.
Claim 20
Dependent Claim
53 words
A tendon prosthesis as defined in claim 7, wherein said fibers are separated into groups, said groups being combined to form a pair of cord-like extensions extending from said first end portion, a single reinforcing strand extending through said central portion and a pair of reinforcing strands extending through said second end portion.
Claim 21
Dependent Claim
33 words
A tendon prosthesis as defined in claim 1, wherein said first connective means includes a plurality of longitudinally spaced fenestrations formed in said first end portion for receiving a segment of natural tendon.
Claim 22
Dependent Claim
28 words
A tendon prosthesis as defined in claim 1, wherein said first connective means includes at least one cord-like extension secured at one end to said first end portion.
Claim 23
Dependent Claim
39 words
A tendon prosthesis as defined in claim 12, wherein said cord-like extension includes a plurality of strands and a woven cloth tube surrounding at least a portion of said strands, said woven cloth tube being receptive to tissue ingrowth.
Claim 24
Dependent Claim
34 words
A tendon prosthesis as defined in claim 13, including at least one pad secured to said first end portion adjacent the terminal end thereof, said pad being formed of material receptive to tissue ingrowth.
Claim 25
Dependent Claim
167 words
A tendon prosthesis for repair or replacement of a natural tendon comprising an elongated central portion formed of flexible biocompatible material, a first end portion integral with a first end of said central portion, said first end portion including first connective means for securing said first end portion; a second end portion integral with a second end of said central portion, said second end portion including second connective means for securing said second end to a segment of a natural tendon, said second connective means including a plurality of longitudinally spaced fenestrations formed in said second end portion for receiving the tendon segment; and a cuff member surrounding the adjacent outer surfaces of said central portion and said second end portion, said cuff member being secured to said central portion and extending a sufficient distance over said second end portion to cover at least a substantial portion of the innermost fenestration formed therein, said cuff member having an outer surface which includes means resistant to tissue ingrowth.
Claim 26
Dependent Claim
167 words
A tendon prosthesis for repair or replacement of a natural tendon comprising an elongated central portion formed of flexible biocompatible material, a first end portion integral with a first end of said central portion, said first end portion including first connective means for securing said first end portion; a second end portion integral with a second end of said central portion, said second end portion including second connective means for securing said second end to a segment of a natural tendon, said second connective means including a plurality of longitudinally spaced fenestrations formed in said second end portion for receiving the tendon segment; and a cuff member surrounding the adjacent outer surfaces of said central portion and said second end portion, said cuff member being secured to said central portion and extending a sufficient distance over said second end portion to cover at least a substantial portion of the innermost fenestration formed therein, said cuff member having an outer surface which includes means resistant to tissue ingrowth.
Claim 27
Dependent Claim
26 words
A tendon prosthesis as defined in claim 2 wherein said first and second end portions include surfaces which includes means receptive to the ingrowth of tissue.
Claim 28
Dependent Claim
31 words
A tendon prosthesis as defined in claim 16 wherein said fenestrations are centrally located with respect to the side edges of said second end portion, said fenestrations being oval in shape.
Claim 29
Dependent Claim
39 words
A tendon prosthesis as defined in claim 17 wherein said central and first and second end portions form a unitary molded body of plastic material and fiber reinforcing means are provided which extend essentially longitudinally within said molded body.
Claim 30
Dependent Claim
28 words
A tendon prosthesis as defined in claim 18 wherein said first connective means is formed by an extension of said fiber reinforcing means beyond said first end portion.
Claim 31
Dependent Claim
48 words
A tendon prosthesis as defIned in claim 18 wherein said first connective means is formed by oval shaped fenestrations formed in said first end portion and centrally located with respect to the side edges thereof, said means receptive to tissue ingrowth being positioned to extend between said fenestrations.
Claim 32
Dependent Claim
76 words
A tendon prosthesis as defined in claim 19 which includes a cuff member surrounding the adjacent outer surfaces of said central portion and said second end portion, said cuff member being secured at one end to said central portion and extending a sufficient distance over said second end portion to cover at least a substantial portion of the innermost fenestration formed therein, said cuff member having an outer surface which includes means resistant to tissue ingrowth.
Claim 33
Dependent Claim
41 words
A tendon prosthesis as defined in claim 18 wherein said second end section has a dumbell cross sectional configuration with edge sections extending on either side of a center section, said edge sections being of greater thickness than said center section.
Claim 34
Independent Claim
15 words
A method for repairing a natural tendon within a living organism comprising the steps of
Claim 35
Independent Claim
15 words
A method for repairing a natural tendon within a living organism comprising the steps of
Claim 36
Dependent Claim
81 words
The method as claimed in claim 23 wherein step 4 further includes the step of forming at least one additional elongated segment of natural tendon having a free end with a cross section sufficiently small to pass through each fenestration and wherein step 5 includes the step of interweaving the additional elongated segment of natural tendon with the one end portion of the prosthesis by passing the free end of the additional elongated end segment back and forth through the fenestrations.
Claim 37
Dependent Claim
19 words
The method of claim 24 wherein elongated segments of natural tendon are formed by splitting the natural tendon longitudinally.
Claim 38
Dependent Claim
60 words
The method of claim 25 further including the step of forming surfaces receptive to tissue ingrowth between the fenestrations and wherein the step of interweaving the elongated segments of natural tendon with the one end portion of the prosthesis includes the step of placing the split surfaces of the elongated segments in contact with the surfaces receptive to tissue ingrowth.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |