Device and method for delivery of multiple heterogenous orthopedic implants
View Patent ↗An orthopedic coupling device is used for simultaneous attachment of multiple heterogeneous orthopedic components, such as a spacer and plate, for implantation in the body. The device coupler includes a coupling base, at least one coupling member configured to attach to one an orthopedic spacer while also trapping or clamping an orthopedic fixation plate between the coupling base and the orthopedic spacer. The orthopedic coupler device may have a detachable handle to facilitate access and visibility of the spacer and plate after initial implantation.
1. A surgical delivery tool, comprising:
an outer tubular shaft having a proximal end, a distal end and a lumen therebetween;
an inner tubular shaft having a proximal end, a distal end, wherein the inner tubular shaft is located at least partially in the lumen of the outer tubular shaft;
a handle located at the proximal end of the inner tubular shaft;
a device coupler wherein the device coupler comprises a coupling base with a through lumen and an elongate coupling member comprising a proximal end and a distal end, wherein the distal end is configured with at least one radial projecting structure configured to abut the coupling base and the proximal end is configured to releasably engage the distal end of the inner tubular shaft, wherein at least a portion of the elongate coupling member is configured so as to move in the through lumen of the coupling base such that the elongate coupling member has a proximal position and a distal position, wherein, in the proximal position, the radial projecting structure on the distal end of the elongate coupling member abuts a distal surface of the coupling base and in the distal position the radial projecting structure lies distal to and separated from the distal surface of the coupling base; and
a releasable lock assembly located about the distal end of the inner tubular shaft and configured to releasably engage the proximal end of the elongate coupling member of the device coupler.
2. The surgical delivery tool of claim 1 , further comprising two distal coupling members fixed to the distal surface of the coupling base, wherein the distal coupling members are adapted to engage complementary structures on a proximal surface of an implant.
3. The surgical delivery tool of claim 1 , wherein the distal end of the inner shaft comprises a distal lumen, a lumenal surface, an ablumenal surface, and a lock lumen between the lumenal surface and the ablumenal surface.
4. The surgical delivery tool of claim 3 , wherein the distal lumen of the inner shaft comprises a non-circular cross-sectional shape.
5. The surgical delivery tool of claim 4 , wherein the proximal end of the elongate coupling member has a configuration that forms a mechanical interfit with the distal lumen of the inner shaft.
6. The surgical delivery tool of claim 3 , wherein the lock lumen has a luminal opening and an ablumenal opening.
7. The surgical delivery tool of claim 6 , wherein the luminal opening has at least one dimension that is smaller than the ablumenal opening.
8. The surgical delivery tool of claim 6 , wherein the releasable lock assembly is located at least partially within the lock lumen of the inner shaft.
9. The surgical delivery tool of claim 8 , wherein the releasable lock assembly comprises a lock element having a lock position wherein the lock element protrudes through the lumenal opening and a release position wherein the lock element does not protrude through the lumenal opening.
10. The surgical delivery tool of claim 9 , wherein the lumen of the outer tubular shaft has art enlarged cross-sectional area about the distal end of the outer tubular shaft.
11. The surgical delivery tool of claim 9 , wherein the lock element is a ball bearing.
12. The surgical delivery tool of claim 1 , further comprising a bias member within the lumen of the outer shaft.
13. The surgical delivery tool of claim 12 , wherein the bias member is configured to bias the lock element in the lock position.
14. The surgical delivery tool of claim 1 , wherein the coupling base comprises a distal concave surface.
15. The surgical delivery tool of claim 1 , wherein the inner shaft and the outer tubular shaft are configured to permit at feast some relative rotational movement between the inner shaft and the outer tubular shaft.
16. The surgical delivery tool of claim 1 , wherein the inner shaft and the outer tubular shaft are configured to permit at least some relative axial movement between the inner shaft and the outer tubular shaft.
17. The surgical delivery tool of claim 1 , wherein the elongate coupling member is integrally formed.
18. A system for performing an orthopedic procedure, comprising:
a first orthopedic implant configured with a first access opening;
a second orthopedic implant having a second access opening and at least one transverse dimension that is larger than the smallest transverse dimension of the first access opening; wherein the second orthopedic implant has a different configuration from the first orthopedic implant; and
a delivery tool comprising a retaining surface and one or more coupling sites wherein at least one coupling a distal elongate coupling member;
wherein the retaining surface comprises at least one transverse dimension that is larger than the smallest transverse dimension of the first access opening;
wherein the at least one distal elongate coupling member is configured to simultaneously pass through the first access opening of the first orthopedic implant and to form a mechanical interfit with the second access opening of the second orthopedic implant so as to retain the first orthopedic implant by compression between the retaining surface and the second orthopedic implant and without forming a mechanical interfit between the retaining surface of the delivery tool and the first orthopedic implant; and
wherein the retaining surface and the distal elongate coupling member are configured to releasably detach from the delivery tool.
19. The system for performing an orthopedic procedure as in claim 18 , wherein the first orthopedic implant is a fixation plate.
20. The system for performing an orthopedic procedure as in claim 18 , wherein the second orthopedic implant is an interbody vertebral spacer.
21. The system for performing an orthopedic procedure as in claim 20 , wherein the interbody vertebral spacer is an interbody cervical spacer.
22. The system for performing an orthopedic procedure as in claim 18 , wherein the mechanical interfit between the delivery tool and the second access opening of the second orthopedic implant comprises a mechanical interfit.
23. The system for performing an orthopedic procedure as in claim 18 wherein the first access opening of the first orthopedic implant is larger in at least one transverse dimension than the corresponding transverse dimension of the area occupied by the one or more coupling sites and wherein the first orthopedic implant is not coupled to the second orthopedic implant during insertion such that the first orthopedic implant may be repositionable relative to the second orthopedic implant and the delivery tool while the delivery tool is coupled to the second orthopedic implant.
24. A system for performing an orthopedic procedure, comprising:
a first orthopedic implant configured with a first access opening;
a second orthopedic implant having a second access opening and at least one transverse dimension that is larger than the smallest transverse dimension of the first access opening; wherein the second orthopedic implant has a different configuration from the first orthopedic implant; and
a delivery tool comprising
a device coupler comprising a coupling base with a through lumen, a proximal surface, and a distal retaining surface
and an elongate coupling member comprising a proximal end and a distal end, wherein the distal end of the coupling member is configured with at least one radial projecting structure configured to abut the distal retaining surface of the coupling base,
wherein at least a portion of the elongate coupling member is configured so as to move in the through lumen of the coupling base such that the elongate coupling member has a retracted position and an extended position,
wherein, when the elongate coupling member is in the retracted position, the radial projecting structure on the distal end of the elongate coupling member abuts the distal retaining surface of the coupling base and is not coupled to the second orthopedic implant and in the extended position of the elongate coupling member, the radial projecting structure lies distal to and separated from the distal retaining surface of the coupling base and is detachably coupled to the second orthopedic implant.