Fusion cage with combined biological delivery system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61F-002/44
A61B-017/56
출원번호
US-0088148
(2013-11-22)
등록번호
US-8709088
(2014-04-29)
발명자
/ 주소
Kleiner, Jeffrey B.
Grimberg, Jr., Edward John
출원인 / 주소
Spinal Surgical Strategies, LLC
대리인 / 주소
Sheridan Ross P.C.
인용정보
피인용 횟수 :
18인용 특허 :
381
초록▼
The present invention relates to an apparatus and method for near-simultaneous and integrated delivery of bone graft material during the placement of surgical cages or other medical implants in a patient's spine. The integrated fusion cage and graft delivery device according to various embodiments d
The present invention relates to an apparatus and method for near-simultaneous and integrated delivery of bone graft material during the placement of surgical cages or other medical implants in a patient's spine. The integrated fusion cage and graft delivery device according to various embodiments delivers and disperses biologic material through a fusion cage to a disc space and, without withdrawal from the surgical site, may selectably detach the fusion cage for deposit to the same disc space. The integrated fusion cage and graft delivery device is formed such that a hollow tube and plunger selectively and controllably place bone graft material and a fusion cage in or adjacent to the bone graft receiving area.
대표청구항▼
1. A bone graft insertion apparatus comprising: a hollow tube constructed to receive bone graft, said hollow tube having an extended axis and a proximal end and a distal end, said hollow tube having a rectangular interior cross-section from said proximal end to said distal end, said distal end havin
1. A bone graft insertion apparatus comprising: a hollow tube constructed to receive bone graft, said hollow tube having an extended axis and a proximal end and a distal end, said hollow tube having a rectangular interior cross-section from said proximal end to said distal end, said distal end having a tapered tip interior surface with a terminus and two oval-shaped openings having an upper and a lower end located on opposite lateral sides of said distal end, said tapered tip interior surface extending into said hollow tube and said terminus positioned adjacent to said oval-shaped openings, said hollow tube of single-piece construction; anda plunger adapted for inserting into said proximal end of said hollow tube along the extended axis, said plunger having a distal end exterior surface of rectangular cross-section contoured to said interior cross-section of said hollow tube, said plunger of single-piece construction with a distal exterior tip, said plunger distal end exterior surface of rectangular cross-section forming a substantially congruent fit with said hollow tube rectangular interior cross-section, wherein said hollow tube and said plunger are configured to deliver bone graft material to a graft receiving area through one or more lateral openings near said distal end of said hollow tube, said plunger having an axial length at least sufficient wherein at a least a portion of said plunger distal end is positioned adjacent to said one or more lateral openings when fully inserted into said hollow tube, said one or more lateral openings substantially precluding the delivery of bone graft material directly along said axis of said hollow tube, said plunger precluded from rotating when inserted into said hollow tube;wherein said distal end of said hollow tube is configured to detachably interconnect to a detachable hollow implant, said implant having a tapered distal end which spans the extended axis and forms the most distal end of the bone graft insertion apparatus when attached to said hollow tube;wherein said distal exterior tip of said plunger is configured to remain always proximal to the tapered distal end of said hollow implant when said plunger is inserted into said hollow tube and said hollow implant is attached to said hollow tube. 2. The apparatus according to claim 1, wherein said tapered tip interior surface is symmetrical about an axial centerline of the hollow tube. 3. The apparatus according to claim 1, wherein said tapered tip interior surface comprises a curved surface. 4. The apparatus according to claim 1, wherein said distal end of said hollow tube comprises an exterior curved surface. 5. The apparatus according to claim 1, further comprising: a detachable funnel connected to said proximal end of said hollow tube, wherein said detachable funnel facilitates insertion of said bone graft into said hollow tube. 6. The apparatus of claim 1, wherein said hollow tube has a length and said one or more lateral openings are solely located on a lower half of said length. 7. The apparatus of claim 1, wherein said plunger distal tip forms a planar lower surface. 8. The apparatus of claim 1, wherein said distal end of at least one of said plunger and said hollow tube are constructed of material more flexible than material comprising said proximal end of said hollow tube. 9. The apparatus of claim 1, wherein said hollow tube is preloaded with one of bone graft and bone morphogenic protein. 10. A combination bone graft insertion and implant insertion apparatus comprising: a hollow tube constructed to receive bone graft, said hollow tube having an extended axis and a proximal end and a distal end, said hollow tube having a uniform interior cross-section from said proximal end to said distal end, said hollow tube of single-piece construction;a substantially hollow implant detachably interconnected to the distal end of the hollow tube, said implant constructed to receive bone graft from said hollow tube, said implant having at least two openings having an upper and a lower end located on opposite lateral sides of said implant, said implant having striations on a plurality of implant surfaces, said implant having a tapered distal end which spans the extended axis and forms the most distal end of the combination bone graft insertion and implant insertion apparatus; anda plunger adapted for inserting into said proximal end of said hollow tube along the extended axis, said plunger having a distal end exterior surface of cross-section contoured to said interior cross-section of said hollow tube, said plunger of single-piece construction with a distal exterior tip, said plunger distal end exterior surface of cross-section forming a substantially congruent fit with said hollow tube uniform interior cross-section,wherein said hollow tube, said substantially hollow implant and said plunger are configured to deliver bone graft material to a graft receiving area into the interior of the substantially hollow implant and through the at least two openings of said substantially hollow implant when the plunger is advanced from the proximal end to the distal end of the hollow tube along the extended axis,wherein the distal exterior tip of said plunger is configured to remain always proximal to the tapered distal end of said substantially hollow implant when said plunger is inserted into said hollow tube and said substantially hollow implant is attached to said hollow tube. 11. The apparatus of claim 10, wherein said hollow tube has a length and said one or more lateral openings are solely located on a lower half of said length. 12. The apparatus of claim 10, wherein said one or more lateral openings substantially preclude the delivery of bone graft material directly along said axis of said hollow tube, said plunger precluded from rotating when inserted into said hollow tube. 13. The apparatus of claim 10, wherein said hollow tube is preloaded with one of bone graft and bone morphogenic protein. 14. A combination bone graft delivery and implant insertion apparatus for integrated delivery of bone graft material to a spinal surgical site and for disposing an implant to a spinal surgical site, comprising: a hollow tube constructed to receive bone graft, said hollow tube having an extended axis and a proximal end and a distal end, said hollow tube having a uniform interior cross-section from said proximal end to said distal end;a substantially hollow implant for use in spinal surgery detachably interconnected to the distal end of the hollow tube, said implant constructed to receive bone graft from said hollow tube and constructed to be disposed in a spinal surgical site, said implant having at least two pairs of implant openings, each pair of implant openings located on opposite sides of said implant, said implant configured to fit between a spinal disk space of a spinal surgical site, said implant having striations on a plurality of surfaces adjacent at least one pair of the at least two pairs of implant openings, said hollow implant having a tapered distal end which spans the extended axis and forms the most distal end of the combination bone graft insertion and implant insertion apparatus; anda plunger adapted for inserting into said proximal end of said hollow tube along the extended axis and deliver bone graft to an interior of the implant, said plunger having a distal exterior tip and a distal end exterior surface of cross-section contoured to said interior cross-section of said hollow tube, said plunger distal end exterior surface of cross-section forming a substantially congruent fit with said hollow tube uniform interior cross-section,wherein said hollow tube, said implant and said plunger are configured to deliver the bone graft material to the spinal surgical site through the at least two pairs of implant openings of said implant after passing through the interior of the implant when the plunger is advanced from the proximal end to the distal end of the hollow tube along the extended axis,wherein the distal exterior tip of said plunger is configured to remain always proximal to the tapered distal end of said substantially hollow implant when said plunger is inserted into said hollow tube and said substantially hollow implant is attached to said hollow tube. 15. The apparatus of claim 14, wherein said striations are disposed on implant exterior surfaces defining two opposite edges of the implant openings on at least one pair of the at least two pairs of implant openings, wherein said implant has at least six implant openings. 16. The apparatus of claim 15, wherein said hollow tube is preloaded with one of bone graft and bone morphogenic protein.
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