摘要:
Adjunct material is provided that has multiple reservoirs formed therein and releasably carrying a plurality of vessels that each retain at least one medicant. An implantable adjunct has at least one bioabsorbable polymer configured to maintain the vessels within a reservoir. Disruption of the at least one bioabsorbable polymer allows release of the vessels from at least one of the reservoirs. A rate of the vessels' release can be controlled by a degradation rate of the at least one bioabsorbable polymer. The released vessels are, in turn, disrupted to thereby cause at least one medicant disposed therein to release and thus provide a desired effect on tissue in-growth.
摘要:
Various exemplary matrix metalloproteinase (MMP) inhibiting adjuncts for surgical devices are provided. In general, an implantable adjunct can be configured to be applied to tissue by a surgical stapler in conjunction with staples. The adjunct can have at least one medicant releasably retained therein that is configured to reduce a length of the epithelialization process. In other words, the at least one medicant releasably retained in the adjunct can be configured to speed up an inflammation stage of wound healing and/or a proliferation stage of wound healing and, accordingly, reduce an amount of time before a remodeling stage of wound healing begins. The at least one medicant can be configured to be released along the staple line defined by the staples.
摘要:
Various exemplary surgical adjuncts with medicants affected by activator materials are provided. In general, an adjunct is provided with at least one medicant that is configured to be activated by an activator material. The adjunct can be delivered to a tissue of a patient, where the adjunct can be implanted. Various activator materials can be configured to activate the at least one medicant retained by the adjunct, the activation causing any one or more of a variety of actions. For example, the at least one medicant can be activated so as to yield at least one of a signal and/or an effect on the adjunct.
摘要:
A staple cartridge is disclosed. The staple cartridge comprises a cartridge body including staple cavities and staples removably stored in the staple cavities. The staple cartridge further comprises a firing member configured to eject the staples from the staple cavities. The staples and staple cavities include features which reduce friction forces between the staples and the staple cavities when the firing member ejects the staples from the staple cavities. Each of the staples comprises a base including a drive portion and staple legs extending from the base and, in at least one instance, each of the staple cavities includes a proximal guide and a distal guide configured to guide the staple legs of the staple positioned therein as it is ejected from the staple cavity. In certain instances, each of the staple cavities further includes an intermediate guide offset from the proximal guide and the distal guide.
摘要:
A biodegradable pure magnesium bone nail comprises a rod-shaped pure magnesium screw bone nail (1). From the bottom of a crossed groove (4), for turning a screw, of a tip of the screw bone nail (1), an axial hole (2) whose length is 2/3 of that of a rod of the screw bone nail is manufactured. In the length of the axial hole (2) of the screw bone nail (1), several radial holes (3) are uniformly manufactured from the bottom of thread into the axial hole (2) at 90 degrees.
摘要:
A staple cartridge is disclosed. The staple cartridge includes a cartridge body, a plurality of staples, and an implantable layer including a plurality of foam fragments, wherein the foam fragments are fused together to form a unitary body. The implantable layer further includes a plurality of intrastitial voids intermediate the foam fragments and/or a plurality of interstitial voids within the foam fragments. A method of forming an implantable layer for use with a surgical stapler is also disclosed. The method includes the steps of obtaining a plurality of foam fragments, heating the foam fragments, and compressing the foam fragments. The method of forming an implantable layer for use with a surgical stapler can also include lyophilizing a solution.
摘要:
A medical product comprises a biodegradable filament and a non-biodegradeable coating. The biodegradable filament forms a stent body having a first end portion, a middle portion, and a second end portion opposite the first end portion. The middle portion extends between the first and second end portions. The non-biodegradeable coating encapsulates the at least one biodegradable filament along the middle portion of the stent body. The non-biodegradeable coating forms a barrier such that the non-biodegradeable coating prevents degradation of the at least one biodegradable filament along the middle portion. The first and second end portions are uncoated. After implantation, the end portions of the stent may biodegrade. The middle portion will not biodegrade due to its encapsulation by the non-biodegradeable coating.
摘要:
A microalloyed magnesium material for absorption in the body of a human or animal. The microalloyed magnesium material consists of: 0.85 to 1.4 percent by weight of zinc (Zn), 0.2 to 0.5 percent by weight of calcium (Ca), 0.2 to 0.5 percent by weight of manganese (Mn) with the remainder being magnesium (Mg) and inevitable impurities.