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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0198754 (2018-11-21) |
| 등록번호 | US-10245159 (2019-04-02) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 0 인용 특허 : 878 |
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 selectively 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. In one embodiment, the integrated fusion cage is an expandable integrated fusion cage.
1. A bone graft material delivery system, comprising: an elongate hollow tube constructed to receive bone graft material, said elongate hollow tube being generally linear and having an extended axis, a generally rectangular cross-section, a proximal end, a distal end with at least one opening, a hol
1. A bone graft material delivery system, comprising: an elongate hollow tube constructed to receive bone graft material, said elongate hollow tube being generally linear and having an extended axis, a generally rectangular cross-section, a proximal end, a distal end with at least one opening, a hollow interior extending from said proximal end to said distal end, and indicia formed on an exterior surface of said elongate hollow tube, wherein said distal end of said elongate hollow tube is at least partially closed; anda plunger adapted to extend in said elongate hollow tube, said plunger having a shaft and a distal portion with an exterior surface contoured to form a substantially congruent fit with said hollow interior of said elongate hollow tube such that said plunger is precluded from rotating within said elongate hollow tube, wherein teeth are formed along a longitudinal axis of said plunger shaft, and wherein said plunger is adapted to urge bone graft material through said elongate hollow tube to deliver bone graft material through said at least one opening of said distal end. 2. The system of claim 1, wherein said indicia are configured to indicate how far said elongate hollow tube has been inserted into a surgical site. 3. The system of claim 1, wherein said indicia comprises at least one of a marking, a score, and a groove. 4. The system of claim 1, wherein said indicia comprises a radiographic marker. 5. The system of claim 1, wherein said at least one opening comprises two openings. 6. The system of claim 1, further comprising actuating means for applying pressure to said shaft of said plunger. 7. The system of claim 1, further comprising an actuator configured to engage said teeth of said plunger to advance said plunger toward said distal end of said elongate hollow tube. 8. The system of claim 7, further comprising a gear to engage said plunger teeth. 9. The system of claim 8, wherein rotational motion of said gear is translated into linear movement of said plunger. 10. The system of claim 1, wherein said distal end of said elongate hollow tube comprises a wedge or a bullet shaped distal tip. 11. The system of claim 1, wherein said elongate hollow tube is rigid. 12. The system of claim 1, further comprising a funnel configured to be coupled to said proximal end of said hollow tube. 13. A bone graft insertion apparatus comprising: a hollow tube constructed to receive bone graft, said hollow tube having an extended axis, a proximal end, a distal end that is wedge-shaped, an opening to discharge bone graft, and a generally uniform interior rectangular cross-section from said proximal end to said distal end, wherein said distal end is at least partially closed;a plunger adapted for inserting into said proximal end of said hollow tube along the extended axis, said plunger having a shaft and a distal portion of rectangular cross-section contoured to said interior rectangular cross-section of said hollow tube, said plunger distal portion forming a congruent fit with said hollow tube uniform interior rectangular cross-section, said shaft having a longitudinal axis and teeth that are formed along said shaft longitudinal axis; andan actuator configured to engage said teeth of said plunger shaft to advance said plunger from said proximal end toward said distal end of said hollow tube to urge the bone graft through said hollow tube and to deliver the bone graft through said opening. 14. The apparatus of claim 13, further comprising one or more of: indicia on said hollow tube that are configured to indicate how far said hollow tube has been inserted into a surgical site;a gear to engage said plunger teeth, wherein said gear is associated with said actuator and is configured to convert rotational motion of said gear into linear movement of said plunger; anda funnel configured to be coupled to said proximal end of said hollow tube. 15. The apparatus of claim 13, wherein said hollow tube is generally linear and rigid, and wherein said opening comprises a first pair of edges and a second pair of edges, wherein the first pair of edges are straight and the second pair of edges are not straight. 16. A bone graft delivery device, comprising: an elongate tube including a first side opposite to a second side, the first and second sides connected by opposing third and fourth sides such that the elongate tube has a hollow interior with a generally rectangular cross-section, wherein the elongate tube includes a proximal end, at least one opening to discharge bone graft, and a distal end that is wedge-shaped, wherein the distal end is at least partially closed;a plunger with a distal portion and a shaft, the distal portion configured to urge the bone graft through the hollow interior of the elongate tube, the shaft being generally linear and having a plurality of teeth; andactuating means for applying a force to the plunger to advance the plunger within the elongate tube toward the distal end such that bone graft is delivered through the opening into a surgical site. 17. The bone graft delivery device of claim 16, wherein the actuating means includes an actuator configured to engage the plurality of teeth of the plunger shaft. 18. The bone graft delivery device of claim 16, wherein the actuating means includes a gear configured to engage the plurality of teeth of the plunger shaft to convert rotational motion of the gear into linear movement of the plunger. 19. The bone graft delivery device of claim 16, wherein the at least one opening includes an opening formed through one of the first, second, third, and fourth sides. 20. The bone graft delivery device of claim 16, wherein the hollow tube is generally linear and is rigid.
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