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US 5,282,829 AGranted
Hollow body implants
AssigneeUnited States Surgical Corporation
InventorMatthew E. Hermes
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AssigneeUnited States Surgical Corporation
InventorMatthew E. Hermes
Estimating the term…
The present invention provides a surgical incision or wound closure implant device possessing an interior hollow core region while maintaining the mechanical beam characteristics of the overall structure. In the case of cored biodegradable implant devices the thickness of the cored region can be varied to regulate the speed at which the device is biodegraded. The core region may optionally be filled with a medicinal agent or a stabilizing material.
A surgical implant possessing a core contained entirely within an interior region of the implant, the implant comprising tissue piercing means, the implant being thereby independently insertable and configured to receive and support a mechanical load in use.
A biodegradable surgical implant possessing a core contained entirely within an interior region of the implant, the implant comprising tissue piercing means, the implant being adapted to receive and support a mechanical load in use wherein the core is crenelated.
A surgical implant possessing a core contained entirely within an interior region of the implant, the implant comprising tissue piercing means, the implant being adapted to receive and support a mechanical load in use wherein the implant is fabricated from a material selected from the group consisting of chromium-cobalt-molybdenum alloy, titanium, stainless steel and titanium alloy.
A surgical implant possessing a core contained entirely within an interior region of the implant, the implant comprising tissue piercing means, the implant being adapted to receive and support a mechanical load in use wherein the core of the implant contains at least one medicinal.
A surgical implant possessing a core contained entirely within an interior region of the implant, the implant comprising tissue piercing means, the implant being adapted to receive and support a mechanical load in use wherein the core contains a stabilizing fluid.
A surgical implant selected from the group consisting of connectors, clips, clamps, tacks, bands, and fasteners comprising a core contained entirely within an interior region of said implant, said implant containing tissue piercing means, said implant being thereby independently insertable and configured to receive and support a mechanical load in use.
A surgical implant selected from the group consisting of connectors, clips, clamps, tacks, bands, staples and fasteners comprising structural members having at least one hollow compartment entirely disposed therein, the structural members being configured to receive and support a mechanical load in use, the implant further comprising tissue piercing means, the implant being independently insertable.
A surgical implant selected from the group consisting of connectors, clips, clamps, staples, tacks, bands and fasteners comprising structural members having at least one hollow compartment disposed therein, the structural members being adapted to receive and support a mechanical load in use wherein the hollow compartment of the implant contains at least one medicinal.
A surgical implant selected from the group consisting of connectors, clips, clamps, staples, tacks, bands and fasteners comprising structural members having at least one hollow compartment disposed therein, the structural members being adapted to receive and support a mechanical load in use wherein the hollow compartment contains a stabilizing fluid.
A method of controlling the rate of decomposition of an independently insertable biodegradable surgical implant having tissue piercing means comprising:
A method of controlling the rate of decomposition of a biodegradable surgical implant selected from the group consisting of connectors, clips, clamps, staples, tacks, bands and fasteners comprising:
A surgical implant selected from the group consisting of staples and clips, the implant comprising a first leg connected to a second leg by a backspan, the backspan comprising at least one interiorly disposed hollow core.
A surgical tack comprising a shaft having at least one hollow core disposed completely within the shaft.
A surgical fastener comprising a U-shaped member, the U-shaped member having two prongs, each prong attached to a backspan, said backspan comprised of at least one interiorly disposed hollow core, the fastener further comprising a retainer member which engages said prongs of said U-shaped member.
Dependencies are inferred from the claim text.
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No related US applications are recorded in the indexed filing history.
For ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord: clamps or clips, e.g. for the umbilical cord
Surgical instruments, devices or methods: surgical staples, i.e. penetrating the tissue
Surgical staples, i.e. penetrating the tissue: with separate closing member, e.g. for interlocking with staple
Surgical instruments, devices or methods: wound clamps or clips, i.e. not or only partly penetrating the tissue ; Devices for bringing together…
Term ended 15 Aug 2011 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
This invention relates to fastening devices, implants and articles used in surgical procedures.
Surgical fasteners such as staples, clips, clamps, bands, tacks, or other wound or incision closure devices are commonly used in surgical procedures to allow a surgeon to fasten, secure and/or repair body tissue quickly without the need for time consuming suturing. Examples of surgical fasteners are given in U.S. Pat. Nos. 4,994,073 or 4,950,284 or 4,934,364, or 4,932,960.
Surgical fasteners are designed to be inserted into and to join tissue or layers of tissue. In so doing, they are adapted to receive a mechanical load or stress without substantial deformation or breakage. The stress may be generated at different points in time and may arise from different stimuli. For example, when the fastener is a two-part device, such as that shown in U.S. Pat. No. 4,932,960, a generally U-shaped fastener member is ejected from a stapling device, passed through tissue, and lodged into a retainer member. Consequently, the backspan of the U-shaped fastener member receives a load when the pusher of the stapling device contacts the backspan and propels the fastener out of the device. The fastener member also receives loads when its prongs penetrate the tissue, and further, when the prongs contact and mate with the retainer. In order to function properly, the fastener and retainer should be designed and constructed to withstand operational stress without substantial deformation or breakage. Once in place, the fastener must also withstand the shearing stress placed upon the tissue, and consequently, on the fastener itself, which is created by the characteristics of tissue interaction in a living creature.
FIG. 1 is a perspective view of an implant device in the nature of a surgical fastener in accordance with the present invention, further depicting a cored region in phantom.
FIG. 2 is a perspective view of an implant device in the nature of a surgical fastener in accordance with the present invention, further depicting a crenelated cored region in phantom.
FIG. 3 is a perspective view of an implant device in the nature of a surgical fastener in accordance with the present invention further depicting a crenelated cored region in phantom wherein apertures leading to the cored region are covered by plugs.
The implant device illustrated in FIG. 1 is a surgical fastener 10 constructed in accordance with the present invention. A U-shaped fastener member 1 has two prongs 3 attached to one another via a backspan 5. The prongs 3 have barbs 7 at their ends which mate and engage a retainer member 9. A novel core 11 runs the entire length of the fastener member 1 and the beam-like characteristics of the overall structure are maintained. As used herein, the "core" or "cored region" is an interiorly disposed hollow section which may be completely enclosed, or open at one or more locations on the surface of the implant. As such, the fastener member 1 is capable of carrying concentrated as well as evenly distributed load forces. The load forces normally act transverse to the longitudinal axis of the core. At any point along the fastener member 1 the shear force and bending moment acting on the beam cross section is used to balance the external loads on either side of the cross section.
When a load is applied to the fastener, such as when the fastener member 1 is propelled from a stapler into tissue, a pusher from the stapler contacts the backspan 5 and forces the fastener member 1 out of the stapler. The stress from the contact is generally evenly distributed over the backspan 5 and the rest of the fastener member 1. Notwithstanding the cored region, the fastener member 1 acts in a manner mechanically similar to, or better than, the backspan of a fastener not possessing a cored region.
When the fastener member 1 pierces the tissue to be fastened, the barbs 7 initially receive most of the force of entry and transmit the force and consequent stress to the rest of the fastener member 1. As above, the fastener member 1 and its core region 11 have the mechanical characteristics of a beam and concentrated forces are distributed over the fastener member 1. External forces to which the fastener member 1 is subjected are balanced over the cross section of the beam and the cored fastener member 1 performs in a manner mechanically similar to, or better than, fasteners not possessing such a core.