Radio-opaque marker for medical implants
AssigneeBiotronik Vi Patent AG
InventorsBodo Gerold, Claus Harder, Bernd Heublein, Heinz Müller
Life of this patent
Estimating the term…
Abstract
A radio-opaque marker for medical implants comprising between 10 and 90 weight percent of a biodegradable base component, between 10 and 90 weight percent of one or more radio-opaque elements selected from the consisting of I, Au, Ta, Y, Nb, Mo, Ru, Rh, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir and Bi as a marker component and 10 weight percent of residual components, the aforementioned components amounting to 100 weight percent.
Claims18
A radiopaque marker for medical implants comprising:
- a) 10 to 90 weight-percent of a biodegradable base component consisting essentially of an alloy and capable of degrading in situ over a medically useful period of time;
- b) 10 to 90 weight-percent of a marker component comprising one or more radiopaque elements selected from the group consisting of I, Au, Ta, Y, Nb, Mo, Ru, Rh, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, W, Re, Os, Ir, and Bi, wherein the radiopaque elements comprise at lest 90 weight-percent Ta, the marker component comprising fine particles;
- and,
- c) less than or equal to 10 weight-percent residual components,
- the components cited adding up to 100 weight-percent, wherein as the base component degrades the marker component particles are excreted without appreciable absorption into surrounding tissue.
A biodegradable implant having a section or coating incorporating a radiopaque marker, the section or coating incorporating the radiopaque marker comprising:
- a) 30 to 70 weight-percent of a base component consisting essentially of a biodegradable alloy capable of degrading in situ over a medically useful period of time;
- b) 30 to 70 weight-percent of a marker component comprising one or more radiopaque elements selected from the group consisting of I, Au, Ta, Y, Nb, Mo, Ru, Rh, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, W, Re, Os, Ir, and Bi, wherein the radiopaque elements comprise at least 90 weight-percent Ta, the marker component comprising fine particles;
- and,
- c) less than or equal to 10 weight-percent residual components,
- the components cited adding up to 100 weight-percent wherein as the base component degrades the marker component particles are excreted without appreciable absorption into surrounding tissue.
A biodegradable implant comprising:
- a) a main body;
- and
- b) a radiopaque marker at least partially comprising the main body, the radiopaque marker comprising
- (i) 10 to 90 weight-percent of a base component consisting essentially of a biodegradable alloy;
- (ii) 10 to 90 weight-percent of one or more radiopaque elements selected from the group consisting of I, Au, Ta, Y, Nb, Mo, Ru, Rh, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, W, re, Os, Ir, and Bi, wherein the radiopaque elements comprise at least 90 weight-percent Ta, the marker component comprising fine particles;
- and,
- (iii) less than or equal to 10 weight-percent residual components, the components cited adding up to 100 weight-percent wherein as the base component degrades the marker component particles are excreted without appreciable absorption into surrounding tissue.
A radiopaque marker for medical implants comprising:
- a) 10 to 90 weight-percent of a biodegradable base component consisting essentially of an alloy and capable of degrading in situ over a medically useful period of time;
- b) 10 to 90 weight-percent of a marker component comprising at least 90 weight-percent of Ta, the marker component comprising fine particles;
- and,
- c) less than or equal to 10 weight-percent residual components, the components cited adding up to 100 weight-percent, wherein as the base component degrades the marker component particles are excreted without appreciable absorption into surrounding tissue.
A biodegradable implant having a section or coating incorporating a radiopaque marker, the section or coating incorporating the radiopaque marker comprising:
- a) 10 to 90 weight-percent of a base component consisting essentially of a biodegradable alloy capable of degrading in situ over a medically useful period of time;
- b) 10 to 90 weight-percent of a marker component comprising at least 90 weight-percent of Ta, the marker component comprising fine particles;
- and,
- c) less than or equal to 10 weight-percent residual components, the components cited adding up to 100 weight-percent wherein as the base component degrades the marker component particles are excreted without appreciable absorption into surrounding tissue.
A biodegradable implant comprising:
- a) a main body;
- and
- b) a radiopaque marker at least partially comprising the main body, the radiopaque marker comprising
- (i) 10 to 90 weight-percent of a base component consisting essentially of a biodegradable alloy;
- (ii) 10 to 90 weight-percent of one or more radiopaque elements wherein the radiopaque elements comprise at least 90 weight-percent Ta, the marker component comprising fine particles;
- and,
- (iii) less than or equal to 10 weight-percent residual components, the components cited adding up to 100 weight-percent wherein as the base component degrades the marker component particles are excreted without appreciable absorption into surrounding tissue.
Dependencies are inferred from the claim text.