A rod inserter, system and method are provided which allows for insertion of a rod through a freehand method. The inserter can include an extension structure extending from a handle, the extension structure having a distal end, a proximal end, and a longitudinal axis. The inserter can also include a
A rod inserter, system and method are provided which allows for insertion of a rod through a freehand method. The inserter can include an extension structure extending from a handle, the extension structure having a distal end, a proximal end, and a longitudinal axis. The inserter can also include a plurality of linkage structures located in a passageway in the extension structure. The linkage structures can cause a rod connection structure to connect to the rod when the distal linkage structure is moved in a first direction, and to cause the rod connection structure to disconnect from the rod when the distal linkage structure is moved in a second direction substantially opposite to the first direction.
대표청구항▼
1. A rod inserter for use with a rod, comprising: a handle;a curved extension structure extending from the handle, the extension structure having a distal end, a proximal end, and a longitudinal axis, the extension structure including a passageway extending along the longitudinal axis of the extensi
1. A rod inserter for use with a rod, comprising: a handle;a curved extension structure extending from the handle, the extension structure having a distal end, a proximal end, and a longitudinal axis, the extension structure including a passageway extending along the longitudinal axis of the extension structure;a rod connection structure located at the distal end of the extension structure, the rod connection structure being disposed within the passageway and encompassed by the extension structure, the rod connection structure configured to connect and disconnect from the rod;a proximal linkage structure located in the passageway of the extension structure and adjacent the handle; anda distal linkage structure located in the passageway of the extension structure and connected to the rod connection structure by a guide pin which permits hinged movement of the entire rod connection structure with respect to the distal linkage structure, wherein the proximal linkage structure is connected to the distal linkage structure, and the distal linkage structure is configured to cause the rod connection structure to connect to the rod when the distal linkage structure is moved in a first direction, and to cause the rod connection structure to disconnect from the rod when the distal linkage structure is moved in a second direction substantially opposite to the first direction. 2. The rod inserter of claim 1, wherein the distal linkage structure is curved. 3. The rod inserter of claim 2, further comprising: an intermediary linkage structure disposed between the proximal linkage structure and the distal linkage structure. 4. The rod inserter of claim 3, wherein the intermediary linkage structure is curved. 5. The rod inserter of claim 4, wherein the proximal linkage structure is connected to the intermediary linkage structure by an intermediary pin, and the distal linkage structure is connected to the intermediary linkage structure by a distal pin. 6. The rod inserter of claim 5, wherein the extension structure includes at least one window portion located adjacent one of the intermediary pin and the distal pin such that movement of the one of the intermediary pin and the distal pin during actuation of the rod inserter is viewable from a location external to the rod inserter. 7. The rod inserter of claim 6, wherein the extension structure includes indicia located adjacent the at least one window portion designating at least one of a locked and an unlocked position. 8. The rod inserter of claim 1, further comprising: an actuation structure located adjacent the handle and configured to move the distal linkage structure in the first direction when actuated and to move the distal linkage structure in the second direction, which is different from the first direction, when de-actuated, such that the rod connection structure connects to the rod when the actuation structure is actuated, and such that the rod connection structure disconnects from the rod when the actuation structure is de-actuated. 9. The rod inserter of claim 8, wherein the actuation structure is a knob that includes internal threads, and the proximal linkage includes external threads that threadably engage with the internal threads of the knob, and actuation of the actuation structure is accomplished by rotation of the knob in a first rotary direction causing the proximal linkage to move in a linear direction with respect to the knob. 10. The rod inserter of claim 1, wherein the rod connection structure includes a collet attached to the distal linkage structure. 11. The rod inserter of claim 10, wherein the passageway includes a tapered inner surface, the tapered inner surface slidingly engages with an exterior surface of the collet wherein the collet flexes inwardly towards the longitudinal axis of the extension structure when the collet is drawn into the passageway by the distal linkage structure. 12. A rod inserter, comprising: a handle;an arcuate housing extending from the handle, the housing defining a passageway extending along a longitudinal axis of the housing;a plurality of links located in the passageway of the housing, at least one of the links extending in an arcuate manner along the longitudinal axis of the housing;a rod connection structure disposed within the passageway and encompassed by the housing, wherein the rod connection structure is connected to at least one of the plurality of links by a guide pin which permits hinged movement of the entire rod connection structure with respect to the at least one of the plurality of links, and wherein the rod connection structure is configured to connect to and release from a rod; andan actuation structure connected via the plurality of links to the rod connection structure, the actuation structure configured such that actuation of the actuation structure causes the rod connection structure to connect to the rod and de-actuation of the actuation structure causes the rod connection structure to release from the rod. 13. The rod inserter of claim 12, wherein the actuation structure is a knob configured to rotate about the longitudinal axis of the housing, and the knob includes internal threads, and at least one of the plurality of links includes external threads that threadably engage with the internal threads of the knob, and rotation of the knob in a first rotary direction moves the plurality of links with respect to the housing. 14. The rod inserter of claim 12, wherein the actuation structure is a knob that includes internal threads, and a proximal one of the plurality of links includes external threads that threadably engage with the internal threads of the knob, and actuation of the actuation structure is accomplished by rotation of the knob in a first rotary direction causing the proximal one of the plurality of links to move in a linear direction with respect to the knob. 15. The rod inserter of claim 12, wherein the actuation structure is configured such that actuation of the actuation structure moves at least one of the plurality of links along the longitudinal axis of the housing. 16. The rod inserter of claim 12, wherein the rod connection structure includes a collet structure located at a distal end of the plurality of links. 17. The rod inserter of claim 16, wherein the housing includes a tapered surface located inside a distal end of the passageway, the tapered surface slidably engages with an exterior surface of the collet wherein the collet flexes inwardly towards the longitudinal axis of the housing when the collet is drawn into the housing by a distal one of the plurality of links. 18. The rod inserter of claim 12, wherein each of the plurality of links is connected to an adjacent one of the plurality of links by a pin. 19. The rod inserter of claim 18, wherein the housing includes at least one window portion located adjacent the pin such that movement of the pin during actuation of the rod inserter is viewable from location external to the rod inserter. 20. The rod inserter of claim 19, wherein the housing includes indicia located adjacent the at least one window portion designating at least one of a locked and an unlocked position. 21. A method of using a rod inserter for inserting a rod, comprising: providing a rod inserter including, a handle,an actuator located adjacent the handle,an extension structure extending from the handle, the extension structure having a distal end, and a proximal end, the extension structure including an passageway running along and defining a curved longitudinal axis of the extension structure,a plurality of links located in the passageway of the extension structure, anda rod connection structure located at the distal end of the extension structure, the rod connection structure being disposed within the passageway and encompassed by the extension structure, the rod connection structure configured to connect to and release from the rod, the rod connection structure being connected to one link of the plurality of links by a guide pin which permits hinged movement of the entire rod connection structure with respect to the one link of the plurality of links;actuating the actuator to move at least two of the plurality of links along the curved longitudinal axis of the extension structure; andactuating the actuator to cause the rod connection structure to one of connect to the rod and release from the rod.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (27)
Bruneau, Aurelien; Lange, Eric C.; Allard, Randall N.; Anderson, Kent M., Expandable spinal rods and methods of use.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.