IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0103285
(2013-12-11)
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등록번호 |
US-9848924
(2017-12-26)
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발명자
/ 주소 |
|
출원인 / 주소 |
- DEPUY SYNTHES PRODUCTS, INC.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
7 |
초록
▼
A bone plate includes a first surface which, when the bone plate is positioned over a bone, faces the bone, and a second surface opposing the first surface, the bone plate comprising an elongate shaft portion extending along a longitudinal axis of the bone plate and including a plurality of through
A bone plate includes a first surface which, when the bone plate is positioned over a bone, faces the bone, and a second surface opposing the first surface, the bone plate comprising an elongate shaft portion extending along a longitudinal axis of the bone plate and including a plurality of through holes extending therethrough from the first surface to the second surface to receive a bone anchor therethrough and a head portion extending from an end of the elongate shaft portion along a length smaller than a length of the elongate shaft portion, a width of the head between lateral walls connecting edges of the first and second surface being greater than a width of the shaft distance between the lateral walls, wherein the second surface includes a cavity extending between a first one of the plurality of through holes situated closest to the head portion and the head portion.
대표청구항
▼
1. A bone plate having a first surface which, when the bone plate is positioned over a bone, faces the bone, and a second surface opposing the first surface, the bone plate comprising: an elongate shaft portion extending along a longitudinal axis of the bone plate and including a plurality of throug
1. A bone plate having a first surface which, when the bone plate is positioned over a bone, faces the bone, and a second surface opposing the first surface, the bone plate comprising: an elongate shaft portion extending along a longitudinal axis of the bone plate and including a plurality of through holes extending therethrough from the first surface to the second surface configured to threadedly engage a bone screw therethrough;a head portion extending from an end of the elongate shaft portion along a length smaller than a length of the elongate shaft portion, a width of the head between lateral walls connecting edges of the first and second surface being greater than a width of the shaft between the lateral walls,wherein the second surface includes a cavity extending between a first one of the plurality of through holes situated closest to the head portion and the head portion, the cavity forming a contiguous concavity into the second surface, andwherein the bone plate has a thickness defined by a distance between the first and second surfaces of the bone plate, wherein the cavity extends into the second surface to a depth of no more than 30% of the thickness of the bone plate. 2. The bone plate according to claim 1, wherein the cavity extends into the head portion. 3. The bone plate according to claim 1, wherein the second surface includes a depression overlapping the first through hole, the cavity and the depression being open to one another. 4. The bone plate according to claim 3, wherein a width in a direction transverse to the longitudinal axis of the bone plate of a portion of the cavity bordering the depression is equal to a width in a direction transverse to the longitudinal axis of the bone plate of a portion of the depression bordering the cavity. 5. The bone plate according claim 1, wherein a length of the cavity in a longitudinal direction of the bone plate is greater than a width of the cavity in a direction transverse to the longitudinal axis of the bone plate. 6. The bone plate according to claim 1, wherein the cavity is spaced from the side walls of the bone plate. 7. The bone plate according to claim 1, wherein an end of the cavity extending toward the head portion is rounded. 8. The bone plate according to claim 1, wherein the cavity has a curved cross-sectional profile in a direction from the shaft portion to the head portion. 9. The bone plate according to claim 1, wherein the cavity has a depth that increases continuously in a direction from the shaft portion to the head portion to a deepest point and decreases continuously from the deepest point to an end of the cavity nearest the head portion. 10. The bone plate according to claim 1, wherein a depth of the cavity tapers in a direction toward the head portion. 11. A bone plate having a first surface which, when the bone plate is positioned over a bone, faces the bone, and a second surface opposing the first surface, the bone plate, comprising: an elongate shaft portion extending along a longitudinal axis of the bone plate and including two opposing side walls extending longitudinally between the first and second surfaces to connect edges thereof and define a width of the shaft portion;a plurality of first through holes extending through the bone plate from the first surface to the second surface, each of the first through holes being configured to receive a bone anchor therein; anda plurality of recesses in the first surface extending from the opposing side walls over a portion of the width of the shaft portion transverse to a longitudinal axis of the shaft portion, each of the first through holes having an identical group of recesses associated therewith, each group of recesses including a first recess and a second recess differing from one another,wherein each group of recesses includes a third recess, the first, second and third recesses of each group being arranged side by side in a direction along the longitudinal axis of the bone plate, the second recess of each group lying between the first and third recesses and having a dimension smaller than a dimension of the corresponding first and third recesses. 12. The bone plate according to claim 11, wherein each group includes a fourth recess interconnecting the second recess with one of the corresponding first and third recesses. 13. The bone plate according to claim 11, wherein the groups of recesses are offset from each other on the opposing side walls of the bone plate along a length of the bone plate. 14. The bone plate according to claim 11, wherein the groups of recesses extend alternately from the opposing side walls along a length of the bone plate. 15. The bone plate according to claim 14, wherein a portion of a first group of recesses extending from a first one of the opposing side walls lies directly across the bone plate from a portion of a second group of recesses immediately following the first group along a length of the bone plate. 16. The bone plate according to claim 11, wherein the recesses extend from the side walls at most up to a mid point of the bone plate between the opposing side walls. 17. The bone plate according to claim 11, wherein the bone plate includes a head portion extending from an end of the shaft portion along a length smaller than a length of the shaft portion, a width of the head portion being greater than a width of the shaft portion, the first through holes and the recesses being arranged in the shaft portion. 18. The bone plate according to claim 17, wherein a distance between the side walls of the shaft portion and a distance between the first and second surfaces is substantially constant along the shaft portion. 19. The bone plate according to claim 17, wherein a section modulus of the shaft portion is substantially constant long the longitudinal axis. 20. The bone plate according to claim 11, wherein a depth of the recesses is largest along the side walls. 21. The bone plate according to claim 11, wherein a depth of at least one of the recesses in each group of recesses decreases from a corresponding side wall toward a center axis of the bone plate extending in the direction of longitudinal extension of the shaft portion. 22. The bone plate according to claim 11, wherein each of the first through holes is a combination hole including a variable-angle portion having an inner surface with a thread-like structure interrupted by a plurality of gaps and a compression hole overlapping with the variable-angle portion, the compression hole being elongated in along the longitudinal axis and having an unthreaded inner surface tapering toward the first surface.
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