Systems and techniques for tissue manipulation during ocular surgery
View Patent ↗Tissue manipulation during ocular surgery may be achieved by a variety of systems and techniques. In particular implementations, a system may include spaced apart levers, hinge members, a grasping mechanism, and a guide mechanism located between the levers. A first hinge member may extend from one of the levers to the guide mechanism and move the guide mechanism in one of a proximal or distal direction when the levers are moved toward each other. The grasping mechanism may be coupled to the guide mechanism and extend distally from the guide mechanism. A second hinge member may extend from one of the levers and be coupled to a tube that surrounds a portion of the grasping mechanism. The second hinge member distally displaces the tube when the levers are moved towards each other. The relative motion of the guide mechanism and the tube may cause actuation of the grasping mechanism.
1. A system for tissue manipulation during ocular surgery, the system comprising:
at least two spaced apart levers, the levers coupled together at one end;
a first hinge member extending from one of the levers to a guide mechanism located between the levers, the first hinge member adapted to displace the guide mechanism in one of a proximal or distal direction when the levers are moved toward each other;
a grasping mechanism coupled at a proximal end to the guide mechanism, the grasping mechanism extending distally from the guide mechanism;
a second hinge member extending from one of the levers and coupled to a tube that surrounds a portion of the grasping mechanism, the second hinge member adapted to displace the tube distally when the levers are moved towards each other such that the tube moves relative to the guide mechanism; and
a third hinge member extending to the guide mechanism from the lever opposite the lever from which the first hinge member extends, the third hinge member also adapted to move the guide mechanism in one of a proximal or distal direction when the levers are moved toward each other; and
a fourth hinge member coupled to the tube and extending from the lever opposite the lever from which the second hinge member extends, the fourth hinge member adapted to move the tube distally when the levers are moved toward each other,
wherein movement of the guide mechanism relative to the tube causes the tube to engage the grasping mechanism such that the grasping mechanism is actuated.
2. The system of claim 1 , wherein at least one of the hinge members is adapted to bend when the levers are moved towards each other.
3. The system of claim 2 , wherein at least one of the hinges is adapted to form a curved shape when bent.
4. The system of claim 1 , further comprising a member extending between the levers and slideably receivable into the guide mechanism.
5. The system of claim 1 , wherein the tube is slideably receivable into the guide mechanism.
6. The system of claim 1 , wherein the second hinge member is coupled to a hub that surrounds the tube, the hub being coupled to the tube.
7. The system of claim 1 , wherein the grasping mechanism comprises:
a guide that extends through a passage formed in the tube; and
actuatable grasping arms disposed at a distal end of the guide.
8. The system of claim 7 , wherein the grasping arms are moveable towards each other when engaged by a distal end of the tube.
9. The system of claim 1 , wherein the tube is curved.
10. A system for tissue manipulation during ocular surgery, the system comprising:
at least two spaced apart levers, the levers coupled together at one end;
a first hinge member extending from one of the levers to a guide mechanism located between the levers, the first hinge member adapted to displace the guide mechanism in one of a proximal or distal direction when the levers are moved toward each other;
a grasping mechanism coupled at a proximal end to the guide mechanism, the grasping mechanism extending distally from the guide mechanism; and
a second hinge member extending from one of the levers and coupled to a tube that surrounds a portion of the grasping mechanism, the second hinge member adapted to displace the tube distally when the levers are moved towards each other such that the tube moves relative to the guide mechanism,
wherein movement of the guide mechanism relative to the tube causes the tube to engage the grasping mechanism such that the grasping mechanism is actuated,
wherein the tube is slideably receivable into the guide mechanism.
11. The system of claim 10 , further comprising:
a third hinge member extending to the guide mechanism from the lever opposite the lever from which the first hinge member extends, the third hinge member also adapted to move the guide mechanism in one of a proximal or distal direction when the levers are moved toward each other; and
a fourth hinge member coupled to the tube and extending from the lever opposite the lever from which the second hinge member extends, the fourth hinge member adapted to move the tube distally when the levers are moved toward each other.
12. The system of claim 10 , wherein at least one of the hinge members is adapted to bend when the levers are moved towards each other.
13. The system of claim 12 , wherein at least one of the hinges is adapted to form a curved shape when bent.
14. The system of claim 10 , further comprising a member extending between the levers and slideably receivable into the guide mechanism.
15. The system of claim 10 , wherein the second hinge member is coupled to a hub that surrounds the tube, the hub being coupled to the tube.
16. The system of claim 10 , wherein the grasping mechanism comprises:
a guide that extends through a passage formed in the tube; and
actuatable grasping arms disposed at a distal end of the guide.
17. The system of claim 16 , wherein the grasping arms are moveable towards each other when engaged by a distal end of the tube.
18. The system of claim 10 , wherein the tube is curved.