IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0674971
(2003-09-30)
|
등록번호 |
US-8673004
(2014-03-18)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
145 |
초록
▼
An interbody spinal fusion implant adapted for placement at least in part across an intervertebral space formed across a disc space between two adjacent vertebral bodies and for penetrating engagement into each of those vertebral bodies, the implant having a trailing end adapted to sit upon and not
An interbody spinal fusion implant adapted for placement at least in part across an intervertebral space formed across a disc space between two adjacent vertebral bodies and for penetrating engagement into each of those vertebral bodies, the implant having a trailing end adapted to sit upon and not protrude from the anterolateral peripheral rim of bone of the vertebral body.
대표청구항
▼
1. A method of inserting a pair of artificial implants into a disc space between two adjacent vertebral bodies, the method comprising: providing a first artificial implant having generally non-linear leading and trailing ends, the trailing end being configured to generally conform to at least a port
1. A method of inserting a pair of artificial implants into a disc space between two adjacent vertebral bodies, the method comprising: providing a first artificial implant having generally non-linear leading and trailing ends, the trailing end being configured to generally conform to at least a portion of the natural anatomical curvature of at least one of the anterior, posterior, and lateral aspects of the vertebral bodies, the first implant having a lateral side and an opposite medial side and a maximum width therebetween less than one half of the width of the disc space, the implant having a mid-longitudinal axis passing through said leading and trailing ends, the mid-longitudinal axis being perpendicular to and bisecting the maximum width into two equal parts, and a length between the leading and trailing ends adapted to allow at least a portion of the implant proximate the leading end and at least a portion of the implant proximate the trailing end to each overlie a peripheral rim of the densely compacted bone of the apophyseal rim along the anatomical curvature of the adjacent vertebral bodies when the first implant is implanted in the disc space, each of the lateral and medial sides being at least in part straight in a direction from the leading end to the trailing end along at least a portion of the length of the first implant;providing a second artificial implant having generally non-linear leading and trailing ends being configured to generally conform to at least a portion of the natural anatomical curvature of at least one of the anterior, posterior, and lateral aspects of the vertebral bodies, the second implant having a lateral side and an opposite medial side and a maximum width therebetween less than one half of the width of the disc space, the implant having a mid-longitudinal axis passing through said leading and trailing ends, the mid-longitudinal axis being perpendicular to and bisecting the maximum width into two equal parts, and a length between the leading and trailing ends adapted to allow at least a portion of the implant proximate the leading end and at least a portion of the implant proximate the trailing end to each overlie the peripheral rim of the densely compacted bone of the apophyseal rim along the anatomical curvature of the adjacent vertebral bodies when the second implant is implanted in the disc space, each of the lateral and medial sides being at least in part straight in a direction from the leading end to the trailing end along at least a portion of the length of the second implant;forming at least one opening across a height of the disc space and into a portion of each of the adjacent vertebral bodies, the at least one opening in the portion of each of the adjacent vertebral bodies being at least in part curved;inserting, after the forming of the at least one opening, the first implant into the at least one opening with the lateral side facing one of the anterior and lateral aspects of the vertebral bodies, the inserting of the first implant includes rotating the first implant at least one half turn into the at least one opening;inserting, after the forming of the at least one opening, the second implant into the at least one opening with the lateral side of the second implant facing one of the anterior and lateral aspects of the vertebral bodies, the inserting of the second implant includes rotating the second implant at least one half turn into the at least one opening;positioning the leading end of each implant so that at least a portion of the implant proximate the leading end between the medial side and the mid-longitudinal axis overlies the apophyseal rim without substantially protruding from the spine; andpositioning the trailing end of each implant so that at least a portion of the implant proximate the trailing end between the medial side and the mid-longitudinal axis overlies the apophyseal rim when the at least a portion of the implant proximate the leading end overlies the apophyseal rim without substantially protruding from the spine. 2. The method of claim 1, wherein the providing of at least one of the implants includes providing an implant with an asymmetrical trailing end. 3. The method of claim 1, wherein each implant is a fusion implant having a hollow therein, further comprising loading each implant with fusion promoting material prior to inserting each implant. 4. The method of claim 3, wherein the fusion promoting material includes at least one of bone, coral, bone morphogenetic protein, and genes coding for the production of bone. 5. The method of claim 1, further comprising combining at least one of the implants with a fusion promoting material. 6. The method of claim 5, wherein the fusion promoting material includes at least one of bone, coral, bone morphogenetic protein, and genes coding for the production of bone. 7. The method of claim 1, wherein the forming of the opening includes drilling the at least one opening. 8. The method of claim 1, wherein each insertion includes linearly inserting the implant into the at least one opening. 9. The method of claim 1, wherein the positioning of each implant includes positioning a majority of the trailing end of each implant along the apophyseal rim of at least one of the adjacent vertebral bodies. 10. The method of claim 1, wherein the providing of at least one of the implants includes providing the trailing end of at least one of the implants with a curved portion generally corresponding to the natural curvature of at least one of the anterior and lateral aspects of the vertebral bodies. 11. The method of claim 1, wherein the positioning of each implant includes positioning the entire trailing end of each implant on the peripheral rim of the densely compacted bone along the anatomical curvature of the adjacent vertebral bodies. 12. The method of claim 1, wherein the positioning of each implant includes positioning at least a portion of the trailing end of each implant between the medial side and the mid-longitudinal axis of the implant on at least one of the anterior cortex and apophyseal rim of the adjacent vertebral bodies. 13. The method of claim 1, wherein the providing of each implant includes providing each implant with a first maximum length measured along the medial side that is longer than a second maximum length measured along the lateral side. 14. The method of claim 1, wherein each of the implants provided include upper and lower surfaces that are each arcuate along a vertical plane transverse to the mid-longitudinal axis of each respective implant. 15. The method of claim 1, wherein each of the implants provided include upper and lower surfaces that each include an arcuate portion extending from the lateral side to the medial side of each respective implant. 16. The method of claim 1, wherein each of the implants provided include upper and lower surfaces that have an arcuate portion extending across the mid-longitudinal axis of each respective implant. 17. The method of claim 1, wherein each of the implants provided include upper and lower surfaces that include at least one opening adapted to communicate with one of the adjacent vertebral bodies, the openings in the upper and lower surfaces being in communication with one another and adapted to permit for the growth of bone from adjacent vertebral body to adjacent vertebral body through each respective implant. 18. A method of inserting a pair of artificial implants into a disc space between two adjacent vertebral bodies, the method comprising: providing a first artificial implant having generally non-linear leading and trailing ends, the trailing end being configured to generally conform to at least a portion of the natural anatomical curvature of at least one of the anterior, posterior, and lateral aspects of the vertebral bodies, the first implant having a lateral side and an opposite medial side and a maximum width therebetween less than one half of the width of the disc space, the implant having a mid-longitudinal axis passing through said leading and trailing ends, the mid-longitudinal axis being perpendicular to and bisecting the maximum width into two equal parts, and a length between the leading and trailing ends adapted to allow at least a portion of the implant proximate the leading end and at least a portion of the implant proximate the trailing end to each overlie a peripheral rim of the densely compacted bone of the apophyseal rim along the anatomical curvature of the adjacent vertebral bodies when the first implant is implanted in the disc space, each of the lateral and medial sides being at least in part straight in a direction from the leading end to the trailing end along at least a portion of the length of the first implant;providing a second artificial implant having generally non-linear leading and trailing ends being configured to generally conform to at least a portion of the natural anatomical curvature of at least one of the anterior, posterior, and lateral aspects of the vertebral bodies, the second implant having a lateral side and an opposite medial side and a maximum width therebetween less than one half of the width of the disc space, the implant having a mid-longitudinal axis passing through said leading and trailing ends, the mid-longitudinal axis being perpendicular to and bisecting the maximum width into two equal parts, and a length between the leading and trailing ends adapted to allow at least a portion of the implant proximate the leading end and at least a portion of the implant proximate the trailing end to each overlie the peripheral rim of the densely compacted bone of the apophyseal rim along the anatomical curvature of the adjacent vertebral bodies when the second implant is implanted in the disc space, each of the lateral and medial sides being at least in part straight in a direction from the leading end to the trailing end along at least a portion of the length of the second implant;forming at least one opening across a height of the disc space and into a portion of each of the adjacent vertebral bodies, the at least one opening in the portion of each of the adjacent vertebral bodies being at least in part curved;inserting, after the forming of the at least one opening, the first implant into the at least one opening with the lateral side facing one of the anterior and lateral aspects of the vertebral bodies, the inserting of the first implant, includes screwing the first implant into the at least one opening;inserting, after the forming of the at least one opening, the second implant into the at least one opening with the lateral side of the second implant facing one of the anterior and lateral aspects of the vertebral bodies, the inserting of the second implant includes screwing the second implant into the at least one opening;positioning the leading end of each implant so that at least a portion of the implant proximate the leading end between the medial side and the mid-longitudinal axis overlies the apophyseal rim without substantially protruding from the spine; andpositioning the trailing end of each implant so that at least a portion of the implant proximate the trailing end between the medial side and the mid-longitudinal axis overlies the apophyseal rim when the at least a portion of the implant proximate the leading end overlies the apophyseal rim without substantially protruding from the spine.
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