US20090035572A1 - Yarns containing thermoplastic elastomer copolymer and polyolefin filaments - Google Patents
Yarns containing thermoplastic elastomer copolymer and polyolefin filaments Download PDFInfo
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- US20090035572A1 US20090035572A1 US12/189,845 US18984508A US2009035572A1 US 20090035572 A1 US20090035572 A1 US 20090035572A1 US 18984508 A US18984508 A US 18984508A US 2009035572 A1 US2009035572 A1 US 2009035572A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L17/00—Materials for surgical sutures or for ligaturing blood vessels ; Materials for prostheses or catheters
- A61L17/04—Non-resorbable materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
- A61B17/06166—Sutures
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L17/00—Materials for surgical sutures or for ligaturing blood vessels ; Materials for prostheses or catheters
- A61L17/06—At least partially resorbable materials
- A61L17/10—At least partially resorbable materials containing macromolecular materials
- A61L17/105—Polyesters not covered by A61L17/12
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/448—Yarns or threads for use in medical applications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/0409—Instruments for applying suture anchors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/0414—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors having a suture-receiving opening, e.g. lateral opening
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/044—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors with a threaded shaft, e.g. screws
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/0446—Means for attaching and blocking the suture in the suture anchor
- A61B2017/0454—Means for attaching and blocking the suture in the suture anchor the anchor being crimped or clamped on the suture
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/0446—Means for attaching and blocking the suture in the suture anchor
- A61B2017/0458—Longitudinal through hole, e.g. suture blocked by a distal suture knot
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
- A61B17/06004—Means for attaching suture to needle
- A61B2017/06028—Means for attaching suture to needle by means of a cylindrical longitudinal blind bore machined at the suture-receiving end of the needle, e.g. opposite to needle tip
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
- A61B17/06166—Sutures
- A61B2017/0619—Sutures thermoplastic, e.g. for bonding, welding, fusing or cutting the suture by melting it
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
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Abstract
Braids and surgical devices are made from yarns that include a core sheath construction with at least one yarn made from a thermoplastic elastomer and at least one yarn made from a polyolefin material.
Description
- The present application claims the benefit of and priority to U.S. Patent Application Publication No. 20070260279, the entire disclosure of which is incorporated by reference herein.
- 1. Technical Field
- The present disclosure relates to a surgical device, i.e., sutures, including at least one yarn made from a thermoplastic elastomer copolymer and at least one yarn made from a polyolefin material. Also disclosed are braided multifilaments suitably adapted for use as surgical devices and made from such yarns.
- 2. Background of Related Art
- Braided multifilaments often offer a combination of enhanced pliability, knot security and tensile strength when compared to their monofilament counterparts. The enhanced pliability of a braided multifilament is a direct consequence of the lower resistance to bending of a bundle of very fine filaments relative to one large diameter monofilament. However, a tradeoff between braid strength and pliability exists in the design of conventional braided multifilaments.
- Braided multifilaments intended for the repair of body tissues should meet certain requirements: they should be substantially non-toxic, capable of being readily sterilized, they should have good tensile strength and pliability, they should also have acceptable knot-tying and knot-holding characteristics and if the braided multifilaments are of the bio-degradable variety, the degradation of the braided multifilaments should be predictable and closely controlled. When used in combination with a fixation device (e.g., bone screw or the like), the suture must be able to withstand the heat generated when the suture contacts the fixation device.
- It would be advantageous to provide a braided multifilament suture that exhibits a combination of desirable characteristics.
- The present disclosure describes a surgical device having a core comprising at least one filament; and a sheath disposed around the core, the sheath including a first yarn comprising a thermoplastic elastomer in combination with a second yarn comprising a polyolefin. The thermoplastic elastomer is preferably a polyester-ether block copolymer. The polyester block of the polyester-ether block copolymer may include polyalkylene terephthalate, polyethylene terephthalate, polytrimethylene terephthalate or polybutylene terephthalate. The polyether block of the polyester-ether block copolymer may be a long chain poly ether glycol, polyalkylene ether glycols, poly(ethylene ether)glycol, poly(1,2- and 1,3-propylene ether)glycol, poly(tetramethylene ether)glycol, poly(1,2-butylene ether)glycol, poly(pentamethylene ether)glycol, poly(hexamethylene ether)glycol, poly(heptamethylene ether)glycol, poly(octamethylene ether)glycol, or poly(nonamethylene ether)glycol. The thermoplastic elastomer may be a poly(ester-ether) block which includes a polybutylene terephthalate and poly(tetramethylene ether) glycol. Additionally, the polyolefin may be an ultra high molecular weight polyethylene.
- In another embodiment, the surgical device includes a core comprising at least one filament, and, a sheath disposed around the core, the sheath including a first yarn comprising a polyester-ether copolymer in combination with a second yarn comprising an ultra high molecular weight polyethylene.
- In some embodiments, the first yarns and the second yarns of the sheath are in a braided construction. Additionally, the first yarns and second yarns may each be multifilament yarns.
- In one embodiment, the core may be about 100 weight % polyolefin. Alternatively, the core may comprise about 100 weight % polybutester. The sheath may be from about 35 weight % to about 98 weight %, and in certain embodiments from about 40 weight % to about 94 weight % polyolefin. Additionally, the sheath may be from about 2 weight % to about 65 weight %, and in certain embodiments, from about 6 weight % to about 60 weight % thermoplastic elastomer.
- In some embodiments, the surgical device includes a suture in combination with a suture anchor.
- The above and other objects, features, and advantages will become more readily apparent from the following description, reference being made to the accompanying drawings in which:
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FIG. 1 is a schematic view of a heterogeneous yarn in accordance with one embodiment of this disclosure; -
FIGS. 2A , 2B and 2C show illustrative embodiments of braids in accordance with one embodiment of this disclosure; -
FIG. 3 shows a needle-suture combination that includes a suture made with a heterogeneous braid in accordance with one embodiment of this disclosure; -
FIG. 4 is a perspective view of a suture, suture anchor and associated suture anchor driver as in one embodiment described herein; -
FIG. 5 is an enlarged area of detail ofFIG. 4 ; -
FIG. 6 is a perspective view of a two part suture anchor being assembled with sutures of the present disclosure; -
FIG. 7 is a perspective view of the suture anchor ofFIG. 6 being positioned on an anchor driver; -
FIG. 8 is a perspective view, partially shown in section, of the suture driver being rotated to drive the suture anchor carrying sutures in accordance with the present disclosure into bone; and -
FIG. 9 is a cross-sectional view partially shown in perspective of the suture anchor and associated sutures installed through tissue and into bone; and, -
FIG. 10 is a cross-sectional view of a core sheath construction of one embodiment of a suture according to the present disclosure. - Filaments made from a thermoplastic elastomer copolymer and filaments made from a polyolefin material are used in accordance with the present disclosure to prepare yarns that can be incorporated into a braided, knitted, woven or other structure to provide a surgical device.
- A plurality of filaments is used to form a yarn. A plurality of yarns is used to form a braid, knit or weave.
- A “heterogeneous yarn” is a configuration containing at least two dissimilar filaments mechanically bundled together to form a yarn. The filaments are continuous and discrete, so therefore each filament extends substantially along the entire length of the yarn and maintains its individual integrity during yarn preparation, processing and use.
- Unlike a heterogeneous yarn, a “homogeneous” yarn is a configuration containing substantially similar filaments. The filaments are also continuous and discrete. Therefore each filament extends substantially along the entire length of the yarn and maintains its individual integrity during yarn preparation, processing and use.
- A “heterogeneous braid” is a configuration containing at least two dissimilar yarns. The two types of yarns are intertwined in a braided construction. The yarns are continuous and discrete, so therefore each yarn extends substantially along the entire length of the braid and maintains its individual integrity during braid preparation, processing and use. A heterogeneous braid may comprise either homogeneous or heterogeneous yarns.
- In the broadest sense, this disclosure contemplates yarns that include at least one yarn made from a thermoplastic elastomer copolymer and at least one yarn made from a polyolefin material. This disclosure further contemplates the medical devices in a core sheath construction made from these yarns and their use in surgery.
- It is envisioned that any thermoplastic elastomer copolymer known to one skilled in the art and capable of being spun into continuous filaments may be used. Particularly useful thermoplastic elastomer copolymers include polyester-ether block copolymers that contain at least a polyester hard segment and a polyether soft segment. These polyester-ether block copolymers can be formed of various configurations, i.e., AB, ABA, or BAB, wherein A is a polyester and B is a polyether.
- Some examples of suitable polyesters include, but are not limited, to polyalkylene terephthalate, polyethylene terephthalate, polytrimethylene terephthalate and polybutylene terephthalate. Some examples of suitable polyethers include, but are not limited to, long chain poly ether glycols, polyalkylene ether glycols, poly(ethylene ether)glycol, poly(1,2- and 1,3-propylene ether)glycol, poly(tetramethylene ether)glycol, poly(1,2-butylene ether)glycol, poly(pentamethylene ether)glycol, poly(hexamethylene ether)glycol, poly(heptamethylene ether)glycol, poly(octamethylene ether)glycol, and poly(nonamethylene ether)glycol. A particularly useful polyester-ether block copolymer contains polybutylene terephthalate and a long chain polyether glycol and is commercially available under the trademark ARNITEL® from DSM, The Netherlands. In certain embodiments, the thermoplastic elastomer is comprised of a long chain ether glycol and polybutylene terephthalate, which, as used herein, is termed a “polybutester.”
- It is also envisioned that any polyolefin known to one skilled in the art and capable of being spun into continuous filaments may be used. In useful embodiments the polyolefin material is made from polyethylene. In particularly useful embodiments, the polyethylene material is a gel-spun ultra high molecular weight polyethylene. Ultra high molecular weight polyethylene (“UHMWP”) is a linear polymer with an average molecular weight greater than about 400,000, typically in the range from about 500,000 to about 6,000,000. Gel-spun UHMWP has a high tenacity and low elongation rate to provide articles with greatly increased strength and decreased elongation.
- Ultra high molecular weight polyethylene, which may be gel-spun, typically exhibits a very substantial degree of crystalline orientation (95-99%) and crystalline content (60-85%). The significant strength and stability of UHMWP is normally caused by the high degree of molecular orientation. As a result, the filaments exhibit strengths from about 375 kpsi (thousands of pounds per square inch) to about 560 kpsi, and tensile moduli of about 15 msi (millions of pounds per square inch) to about 30 msi. Gel-spun UHMWP is commercially available under the trademark SPECTRA® from Allied-Signal Technologies, Petersberg, Va. and under the trademark DYNEEMA® from DSM High Performance Fibers, JH Heerlen, The Netherlands.
- The yarns may optionally contain filaments made of other materials. Materials used to construct these optional filaments can include a wide variety of natural and synthetic materials such as any materials previously known for the construction of sutures, meshes, sternal closure devices, cables, tapes and tethers. Such materials include bioabsorbable, non-bioabsorbable, biodegradable, non-biodegradable and bioerodible polymeric materials. Additionally carbon fibers, steel fibers, memory-shape alloys, silk, cotton, linen and other fibrous materials can also be employed.
- Representative natural biodegradable polymers include polysaccharides such as alginate, dextran, cellulose, collagen, and chemical derivatives thereof (substitutions, additions of chemical groups, for example, alkyl, alkylene, hydroxylations, oxidations, and other modifications routinely made by those skilled in the art), and proteins such as albumin, zein and copolymers and blends thereof, alone or in combination with synthetic polymers.
- Representative synthetic polymer blocks include polyphosphazenes, poly(vinyl alcohols), polyamides, polyester amides, poly(amino acid)s, synthetic poly(amino acids), polyanhydrides, polycarbonates, polyacrylates, polyalkylenes, polyacrylamides, polyalkylene glycols, polyalkylene oxides, polyvinyl halides, polyvinylpyrrolidone, polylactides, polyglycolides, polysiloxanes, polyurethanes and copolymers thereof.
- Examples of suitable polyacrylates include poly(methyl methacrylate), poly(ethyl methacrylate), poly(butyl methacrylate), poly(isobutyl methacrylate), poly(hexyl methacrylate), poly(isodecyl methacrylate), poly(lauryl methacrylate), poly(phenyl methacrylate), poly(methyl acrylate), poly(isopropyl acrylate), poly(isobutyl acrylate) and poly(octadecyl acrylate).
- Synthetically modified natural polymers include cellulose derivatives such as alkyl celluloses, hydroxyalkyl celluloses, cellulose ethers, cellulose esters, nitrocelluloses, and chitosan. Examples of suitable cellulose derivatives include methyl cellulose, ethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, hydroxybutyl methyl cellulose, cellulose acetate, cellulose propionate, cellulose acetate butyrate, cellulose acetate phthalate, carboxymethyl cellulose, cellulose triacetate and cellulose sulfate sodium salt. These are collectively referred to herein as “celluloses”.
- Representative synthetic degradable polymers include polyhydroxy acids, such as polylactides, polyglycolides and copolymers thereof; poly(hydroxybutyric acid); poly(hydroxyvaleric acid); poly(lactide-co-(ε-caprolactone-)); poly(glycolide-co-(ε-caprolactone)); polycarbonates, poly(pseudo amino acids); poly(amino acids); poly(hydroxyalkanoate)s; polyanhydrides; polyortho esters; and blends and copolymers thereof.
- Examples of non-biodegradable polymers include ethylene vinyl acetate, poly(meth)acrylic acid, polyamides, polystyrene, polyvinyl chloride, polyvinylphenol, and copolymers and mixtures thereof.
- Rapidly bioerodible polymers such as poly(lactide-co-glycolide)s, polyanhydrides, and polyorthoesters, which have carboxylic groups exposed on the external surface as the smooth surface of the polymer erodes, also can be used.
- In one embodiment, a
heterogeneous yarn 10 contains a plurality of two dissimilar filaments as shown inFIG. 1 .First filaments 12 are made from a thermoplastic elastomer copolymer andsecond filaments 13 are made from a polyolefin material. A plurality of the two dissimilar filaments are comingled to form a heterogeneous yarn. - In another embodiment shown in
FIG. 2A , aheterogeneous braid 20 contains two dissimilar yarns. Afirst yarn 22 contains a plurality of filaments made from a thermoplastic elastomer copolymer. Asecond yarn 24 contains a plurality of filaments made from a polyolefin material. The first and second yarns are intertwined to form a heterogeneous braid. - In still another embodiment shown in
FIG. 2B , a heterogeneous braid 120 contains aheterogeneous yarn 122 and ahomogeneous yarn 124. As described above, a heterogeneous yarn contains a plurality of two dissimilar filaments. Preferably, a first filament is made from a thermoplastic elastomer copolymer and a second filament is made from a polyolefin material. A homogeneous yarn contains a plurality of filaments made from any material capable of being spun into a filament. The heterogeneous yarn and the homogeneous yarn are intertwined to form a heterogeneous braid. - In yet another embodiment shown in
FIG. 2C , abraid 210 contains two similarheterogeneous yarns - A heterogeneous braid and/or yarn can be prepared using conventional braiding technology and equipment commonly used in the textile industry, and in the medical industry for preparing multifilament sutures. Suitable braid constructions are disclosed, for example, in U.S. Pat. Nos. 3,187,752; 3,565,077; 4,014,973; 4,043,344; 4,047,533; 5,019,093; and 5,059,213, the disclosures of which are incorporated herein by reference. Illustrative flat braided structures (suitable, e.g., for tendon repair) which can be formed using the presently described heterogeneous yarns include those described in U.S. Pat. Nos. 4,792,336 and 5,318,575. Suitable mesh structures are shown and described, for example, in Hain et al. U.S. Pat. No. 5,292,328. In addition, shape memory fibers may be incorporated into non-woven structures, such as felt. One suitable non-woven structure is shown and described in Koyfman et al. U.S. Pat. No. 5,393,534.
- In some embodiments, core sheath constructions are preferred. For example, several of the above-mentioned U.S. patents for braided constructions discuss core sheath structures. For example, U.S. Pat. No. 5,019,093 discloses braided sutures and a core component around which the braid is constructed.
- In some embodiments, core sheath braids include a core which may be a multifilament yarn, a plurality of multifilament yarns, or a single filament. Yarns and filaments comprising the core may be either heterogeneous or homogeneous. In certain embodiments, the core may comprise a first yarn and a second yarn which are dissimilar, although in other embodiments, the first and second yarns may be similar. The first yarns and the second yarns may be multifilament yarns which may be homogeneous or heterogeneous. Multifilament yarns of the present disclosure may be constructed by braiding, plying, weaving, or twisting individual filaments together. Alternately, the core may comprise at least two multifilament yarns, and the multifilament yarns may be woven, braided or otherwise entangled together.
- In some embodiments, core sheath braids include a sheath which may be a multifilament yarn or a plurality of multifilament yarns. Similar to the core described above, yarns comprising the sheath may be either heterogeneous or homogeneous. In certain embodiments, the sheath comprises first yarns and second yarns which are dissimilar, although in other embodiments, the first and second yarns may be of the same material. Additionally, the first yarn may comprise UHMWP and the second yarn may be a colored identifier, i.e. a tracer, such as silk or nylon. The first yarns and the second yarns may be multifilament yarns which may be homogeneous or heterogeneous. Multifilament yarns of the present disclosure may be constructed by braiding, plying, weaving, or twisting individual yarns together. Alternately, the sheath may comprise a plurality of multifilament yarns; the plurality of multifilament yarns may be woven, braided or otherwise entangled together. For example, a suture may include a core, which is a twisted homogeneous yarn, and a braided multifilament sheath, having a first thermoplastic elastomer yarn and second polyolefin yarn disposed about the core.
- In another example, the core sheath construction may include a multifilament core yarn in combination with a multifilament sheath as shown in
FIG. 10 . Thesuture 30 includes a core 36 which is a multifilament yarn although is it contemplated that the core may a monofilament. Thesuture 30 includes amultifilament sheath 38 which has a plurality of twodissimilar yarns core 36. - The core may comprise about 100% of a polyolefin material. The core is from about 0 weight % to about 30 weight % of the suture, and in certain embodiments, from about 5 weight % to about 25 weight % of the suture. The sheath yarns comprise from about 70% to about 100% by weight of the suture, and in certain embodiments, from about 75% to 95% by weight of the suture.
- As described above, the sheath may contain two dissimilar yarns, the first yarn being a thermoplastic elastomer copolymer and the second yarn being a polyolefin. More specifically, in some embodiments, the sheath is about 35 weight % to about 98 weight % polyolefin, and in certain embodiments, from about 40 weight % to about 94 weight % polyolefin. Additionally, the sheath is about 2 weight % to about 65 weight % thermoplastic elastomer, and in certain embodiments from about 6 weight % to about 60 weight % thermoplastic elastomer.
- Overall, the composition of the suture may contain from about 2 weight % to about 75 weight %, and in some embodiments from about 5 weight % to about 65 weight percent of a thermoplastic elastomer. The polyolefin composition in the suture is from about 25 weight % to about 98 weight %, and in certain embodiments, from about 35 weight % to about 95 weight %.
- Particularly useful sheath materials may include a thermoplastic elastomer such as ARNITEL®, and a polyolefin, such as an ultra high molecular weight polyethylene (UHMWP) like DYNEEMA®. A particularly useful core material may be a polyolefin, such as an ultra high molecular weight polyethylene like DYNEEMA®. Alternatively, the core material may comprise a thermoplastic elastomer such as ARNITEL®.
- Furthermore, sutures of the present disclosure may include a colored identifier such as a tracer. “Tracers” as defined herein, include an identifiable trace such as a filament which provides color contrasting to the suture or medical device against a surrounding environment such as the surgical field. For example, the tracer may be a dyed, pigmented, or color coated polymer filament of a material such as polybutester or nylon.
- The tracers may be comingled or braided with other yarns to create a multifilament yarn. A length or portion of the suture may include a tracer, or conversely, a tracer may run the entire length of the suture. The tracers may be braided into the suture to exhibit a specific pattern on the surface of the suture, which may assist a surgeon in identifying specific suture strands in the surgical field.
- If desired, the surface of a filament, yarn or braid can be coated with a bioabsorbable or nonabsorbable coating to further improve the performance of the braid. For example, a braid can be immersed in a solution of a desired coating polymer in an organic solvent, and then dried to remove the solvent.
- If the surface of a filament, yarn or braid is coated, then the coating composition may desirably contain bioactive materials. Some examples include: vasoactive agents, neuroactive agents, hormones, growth factors, cytokines, anaesthetics, steroids, anticoagulants, anti-inflammatories, immunomodulating agents, cytotoxic agents, prophylactic agents, antibiotics, antimicrobials, antivirals, antisense, antigens and antibodies.
- A heterogeneous braid is sterilized so it can be used for a host of medical applications, especially for use as a surgical suture, cable, tether, tape and sternal closure device, preferably attached to a needle, suture anchor, or bone anchor. For example, as shown in
FIG. 3 , a needle-suture combination 100 includes asuture 101 made from a heterogeneous yarn in accordance with this disclosure attached to aneedle 102. A braid can be sterilized using any of the conventional techniques well known in the art. - Once sterilized, a braided multifilament surgical device, as described herein, may be used to repair wounds located between two or more soft tissues, two or more hard tissues, or at least one soft tissue and at least one hard tissue. The braided multifilament surgical device is passed through, wrapped around or secured to tissue and then the tissue is approximated by manipulating the braided multifilament surgical device, such as, for example, by tying a knot, cinching the device, applying a buckle, or the like.
- Sutures made in accordance with the foregoing description will exhibit superior strength and resistance to abrasion, and may find particular use in cardiac surgery and orthopedic surgery. With respect to orthopedic surgery in particular, the suture will be useful in securing bone under high stress and abrasion. The present multifilament braided sutures can advantageously be used in combination with a fixation device, including, but not limited to, for example, suture anchors.
- In a particularly useful embodiment, it is contemplated that the suture in accordance with the disclosure may be delivered in conjunction with a suture anchor delivery system and may be passed through tissue using an arthroscopic suturing instrument. Referring now to
FIGS. 4 and 5 , one suitable sutureanchor delivery system 310 is shown having ahandle 314 with anelongate shaft 316 supporting a threadedsuture anchor 320 at thedistal tip 318 of theshaft 316 away from thehandle 314. As shown inFIG. 5 ,suture 322 made in accordance with the present disclosure is attached to thesuture anchor 320 and is led throughtrough 317 in the shaft 316 (and a corresponding trough (not shown) on the other side shaft 316) to handle 314. Referring now toFIGS. 6 and 7 , one method of pre-attaching a pair ofsutures suture anchor 320 consists of two parts, a hollow-threadedbody portion 410 and atip portion 420 having ashaft 422 insertable into thehollow body portion 410 and configured to receive and hold twosutures transverse apertures tip bead section 426 does not pass into or through the hollow threadedbody 410, thereby retaining the suture relative to the suture anchor as thesutures proximal ends - In use during an arthroscopic procedure a
cannula 300 is inserted into the joint capsule and theshaft 316 of the suture anchor delivery system is inserted through thecannula 300 to a prepared site suitable to receive suture anchor.FIG. 8 shows the shaft of the instrument inserted through cannula 430 with thesuture anchor 320 inserted into bone B. Thesuture anchor 320 is released from thedelivery system 310 leaving thesutures - In the context of a suture anchor, a suture constructed in accordance with the present disclosure provides significantly enhanced resistance to abrasion as the suture is manipulated, including drawing the suture through the suture eyelets of the suture anchor, forming knots in the suture, and cinching the knots down tightly for secure approximation of the soft tissue to bone.
- The composite suture has a sheath of ultra high molecular weight polyethylene (UHMWP) multifilament yarn and polybutester multifilament yarn. The polybutester multifilament yarn is blue in color, the polybutester includes the addition of Heliogen® Blue K7090 pigment, commercially available from BASF. The suture is made on a conventional Ratera braider. The sheath contains about 76 weight % UHMWP and about 24 weight % polybutester. The core of the suture consists of about 100 weight % UHMWP yarns. Loaded onto the braider are 8 carriers of 110 dtex ultra high molecular weight polyethylene multifilament yarns in the clockwise direction, 4 carriers of 110 dtex UHMWP multifilament yarns in the counter clockwise direction and 4 carriers of 106 dtex polybutester multifilament yarns in the counterclockwise. The counterclockwise bobbins are loaded in a 2×2×2×2 manner with two consecutive carriers of UHMWP alternated with two consecutive carriers of polybutester yarns. The braid has a core construction of 1 ply 220 dtex UHMWP. The braider pick count is set at between 51-55 ppi, the core tension is set between 70-90 grams and the take-up tension at approximately 300 grams.
- Of the overall suture, the polybutesters in the sheath makes up approximately 22 weight % of the suture and the UHMWP in the sheath makes up approximately 68 weight % of the suture. The UHMWP in the core makes up approximately 10 weight % of the suture.
- The composite suture has a sheath of ultra high molecular weight polyethylene (UHMWP) multifilament yarn and polybutester monofilament yarn. The suture was made on a conventional Ratera braider. The sheath contained about 94 weight % UHMWP and about 6 weight % polybutester, the polybutester was colored blue by the inclusion of Heliogen® Blue K 7090 pigment, commercially available from BASF. The core of the suture consisted of 100 weight % UHMWP multifilament yarn. Loaded onto the braider were 8 carriers of 110 dtex UHMWP multifilament yarns in the clockwise direction, 6 carriers of 110 dtex UHMWP multifilament yarns in the counter clockwise direction and 2 carriers of 50 dtex polybutester monofilament yarns in the counterclockwise direction. The counterclockwise bobbins were loaded in a 3×1×3×1 manner with three consecutive carriers of UHMWP alternated with one carrier of polybutester yarn. The braid had a core construction of 1 ply 220 dtex UHMWP. The braider pick count was set at between 51-55 ppi, the core tension was set between 70-90 grams and the take-up tension at approximately 300 grams.
- Of the overall suture, the polybutesters in the sheath makes up approximately 6 weight % of the suture and the UHMWP in the sheath makes up approximately 84 weight % of the suture. The UHMWP in the core makes up approximately 10 weight % of the suture.
- Various modifications and variations of the yarns, braids and devices and uses thereof will be apparent to those skilled in the art from the foregoing detailed description. Such modifications and variations are intended to come within the scope of the following claims.
Claims (26)
1. A surgical device comprising:
a core comprising at least one filament; and
a sheath disposed around the core, the sheath including a first yarn comprising a thermoplastic elastomer and a second yarn comprising a polyolefin material.
2. The surgical device according to claim 1 , wherein the thermoplastic elastomer is a polyester-ether block copolymer.
3. The surgical device according to claim 2 , wherein the polyester-ether block copolymer comprises a polyester block, wherein the polyester block is selected from the group consisting of polyalkylene terephthalate, polyethylene terephthalate, polytrimethylene terephthalate and polybutylene terephthalate.
4. The surgical device according to claim 2 , wherein the polyester-ether block copolymer comprises a polyether block, wherein the polyether block is selected from the group consisting of long chain poly ether glycols, polyalkylene ether glycols, poly(ethylene ether)glycol, poly(1,2- and 1,3-propylene ether)glycol, poly(tetramethylene ether)glycol, poly(1,2-butylene ether)glycol, poly(pentamethylene ether)glycol, poly(hexamethylene ether)glycol, poly(heptamethylene ether)glycol, poly(octamethylene ether)glycol, and poly(nonamethylene ether)glycol.
5. The surgical device according to claim 1 , wherein the thermoplastic elastomer comprises a polyester-ether block copolymer including polybutylene terephthalate and poly(tetramethylene ether) glycol.
6. The surgical device according to claim 1 , wherein the polyolefin material comprises an ultra high molecular weight polyethylene.
7. The surgical device according to claim 1 , wherein the first yarn and the second yarn are in a braided construction.
8. The surgical device according to claim 1 , wherein the first yarn and the second yarn are multifilament yarns.
9. The surgical device according to claim 1 , wherein the core comprises about 100 weight % polyolefin.
10. The surgical device according to claim 1 , wherein the core comprises about 100 weight % polybutester.
11. The surgical device according to claim 1 , wherein the sheath comprises from about 35 weight % to about 98 weight % polyolefin.
12. The surgical device according to claim 1 , wherein the sheath comprises from about 40 weight % to about 94 weight % polyolefin.
13. The surgical device according to claim 1 , wherein the sheath comprises from about 2 weight % to about 65 weight % thermoplastic elastomer.
14. The surgical device according to claim 1 , wherein the sheath comprises from about 6 weight % to about 60 weight % thermoplastic elastomer.
15. The surgical device according to claim 1 , wherein the surgical device comprises a suture in combination with a suture anchor.
16. The surgical device according to claim 1 , further including a colored identifier.
17. A surgical device comprising:
a core comprising at least one filament; and,
a sheath disposed around the core, the sheath including a first yarn comprising a polyester-ether copolymer in combination with a second yarn comprising an ultra high molecular weight polyethylene.
18. The surgical device according to claim 17 , wherein the first yarn and the second yarn are multifilament yarns.
19. The surgical device according to claim 17 , wherein the polyester-ether copolymer comprises a polybutester.
20. The surgical device according to claim 17 , wherein the core comprises about 100 weight % ultra high molecular weight polyethylene.
21. The surgical device according to claim 17 , wherein the core comprises about 100 weight % polybutester.
22. The surgical device according to claim 17 , wherein the sheath comprises from about 35 weight % to about 98 weight % ultra high molecular weight polyethylene.
23. The surgical device according to claim 17 , wherein the sheath comprises from about 40 weight % to about 94 weight % ultra high molecular weight polyethylene.
24. The surgical device according to claim 17 , wherein the sheath comprises from about 2 weight % to about 65 weight % polyester-ether copolymer.
25. The surgical device according to claim 17 , wherein the sheath comprises from about 6 weight % to about 60 weight % polyester-ether copolymer.
26. The surgical device according to claim 17 , further including a colored identifier.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/189,845 US20090035572A1 (en) | 2006-04-06 | 2008-08-12 | Yarns containing thermoplastic elastomer copolymer and polyolefin filaments |
CA2671657A CA2671657A1 (en) | 2008-08-12 | 2009-07-10 | Yarns containing thermoplastic elastomer copolymer and polyolefin filaments |
AU2009202951A AU2009202951A1 (en) | 2008-08-12 | 2009-07-22 | Yarns containing thermoplastic elastomer copolymer and polyolefin filaments |
EP09251953A EP2161041A3 (en) | 2008-08-12 | 2009-08-06 | Yarns containing thermoplastic elastomer copolymer and polyolefin filaments |
JP2009187517A JP2010042260A (en) | 2008-08-12 | 2009-08-12 | Yarn including thermoplastic elastomer copolymer and polyolefin filament |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US78995006P | 2006-04-06 | 2006-04-06 | |
US11/732,997 US20070260279A1 (en) | 2006-04-06 | 2007-04-05 | Yarns containing thermoplastic elastomer copolymer and polyolefin filaments |
US12/189,845 US20090035572A1 (en) | 2006-04-06 | 2008-08-12 | Yarns containing thermoplastic elastomer copolymer and polyolefin filaments |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/732,997 Continuation-In-Part US20070260279A1 (en) | 2006-04-06 | 2007-04-05 | Yarns containing thermoplastic elastomer copolymer and polyolefin filaments |
Publications (1)
Publication Number | Publication Date |
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US20090035572A1 true US20090035572A1 (en) | 2009-02-05 |
Family
ID=41572473
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US12/189,845 Abandoned US20090035572A1 (en) | 2006-04-06 | 2008-08-12 | Yarns containing thermoplastic elastomer copolymer and polyolefin filaments |
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US (1) | US20090035572A1 (en) |
EP (1) | EP2161041A3 (en) |
JP (1) | JP2010042260A (en) |
AU (1) | AU2009202951A1 (en) |
CA (1) | CA2671657A1 (en) |
Cited By (6)
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US20080281355A1 (en) * | 2005-05-04 | 2008-11-13 | Etech Ag | Joining Element |
US20130211430A1 (en) * | 2012-02-10 | 2013-08-15 | Novus Scientific Pte. Ltd. | Multifilaments with time-dependent characteristics, and medical products made from such multifilaments |
US8833402B2 (en) * | 2010-12-30 | 2014-09-16 | Cook Medical Technologies Llc | Woven fabric having composite yarns for endoluminal devices |
US20150258238A1 (en) * | 2014-03-13 | 2015-09-17 | River Point, Llc | Suture material having beneficial physical properties |
US10595983B1 (en) | 2018-02-05 | 2020-03-24 | Riverpoint Medical, Llc | Constructs and methods for repairing a tendon with a reduced risk of reinjury |
US10660638B2 (en) | 2012-03-01 | 2020-05-26 | DePuy Synthes Products, Inc. | Surgical suture with soft core |
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US9034011B2 (en) * | 2008-04-01 | 2015-05-19 | Covidien Lp | Anchoring device |
CA2988667C (en) * | 2009-04-27 | 2020-09-22 | Teleflex Medical Incorporated | Colored suture construction |
US9044224B2 (en) * | 2010-04-12 | 2015-06-02 | Covidien Lp | Barbed medical device and method |
CN104083188A (en) * | 2014-06-23 | 2014-10-08 | 王明旗 | Medical rubber band elastic thread special for anorectal department |
KR20160139538A (en) * | 2015-05-28 | 2016-12-07 | 주식회사 메타바이오메드 | Suture with ultra high molecular weight polyethylene fiber |
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US9757121B2 (en) | 2005-05-04 | 2017-09-12 | DePuy Synthes Products, Inc. | Joining element |
US11471154B2 (en) | 2005-05-04 | 2022-10-18 | DePuy Synthes Products, Inc. | Joining element |
US8870915B2 (en) | 2005-05-04 | 2014-10-28 | DePuy Synthes Products, LLC | Joining element |
US10542972B2 (en) | 2005-05-04 | 2020-01-28 | DePuy Synthes Products, Inc. | Joining element |
US20080281355A1 (en) * | 2005-05-04 | 2008-11-13 | Etech Ag | Joining Element |
US9757120B2 (en) | 2005-05-04 | 2017-09-12 | DePuy Synthes Products, Inc. | Joining element |
US8833402B2 (en) * | 2010-12-30 | 2014-09-16 | Cook Medical Technologies Llc | Woven fabric having composite yarns for endoluminal devices |
US9888992B2 (en) | 2012-02-10 | 2018-02-13 | Novus Scientific Ab | Multifilaments with time-dependent characteristics, and medical products made from such multifilaments |
US9080263B2 (en) * | 2012-02-10 | 2015-07-14 | Novus Scientific Ab | Multifilaments with time-dependent characteristics, and medical products made from such multifilaments |
US10716656B2 (en) | 2012-02-10 | 2020-07-21 | Novus Scientific Ab | Multifilaments with time-dependent characteristics, and medical products made from such multifilaments |
US20130211430A1 (en) * | 2012-02-10 | 2013-08-15 | Novus Scientific Pte. Ltd. | Multifilaments with time-dependent characteristics, and medical products made from such multifilaments |
US10660638B2 (en) | 2012-03-01 | 2020-05-26 | DePuy Synthes Products, Inc. | Surgical suture with soft core |
US20150258238A1 (en) * | 2014-03-13 | 2015-09-17 | River Point, Llc | Suture material having beneficial physical properties |
US20190022271A1 (en) * | 2014-03-13 | 2019-01-24 | Riverpoint Medical, Llc | Suture material having beneficial physical properties |
US10595983B1 (en) | 2018-02-05 | 2020-03-24 | Riverpoint Medical, Llc | Constructs and methods for repairing a tendon with a reduced risk of reinjury |
US11395728B1 (en) | 2018-02-05 | 2022-07-26 | Riverpoint Medical, Llc | Constructs and methods for repairing a tendon with a reduced risk of reinjury |
US11426268B1 (en) | 2018-02-05 | 2022-08-30 | Riverpoint Medical, Llc | Constructs and methods for repairing a tendon with a reduced risk of reinjury |
US11559388B1 (en) | 2018-02-05 | 2023-01-24 | Riverpoint Medical, Llc | Constructs and methods for repairing a tendon with a reduced risk of reinjury |
Also Published As
Publication number | Publication date |
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JP2010042260A (en) | 2010-02-25 |
CA2671657A1 (en) | 2010-02-12 |
EP2161041A3 (en) | 2012-11-28 |
AU2009202951A1 (en) | 2010-03-04 |
EP2161041A2 (en) | 2010-03-10 |
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