Retrieval basket with releasable tip
First Claim
Patent Images
1. A medical device, comprising:
- a basket comprising a plurality of wires and a tip joint disposed at the distal end of the basket, an end of each of the plurality of wires is secured at the tip joint, the end of at least one of the plurality of wires is released from the tip joint when a predetermined force is applied to the basket.
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Accused Products
Abstract
A medical retrieval device is used to retrieve and/or fragment stones (and/or other objects) from the body of a patient. The device has a retrieval basket with a releasable tip. The tip release is designed to release in a controlled pre-determined manner and under a predetermined force before any other component of the device fails due to a force exerted on the basket.
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Citations
76 Claims
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1. A medical device, comprising:
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a basket comprising a plurality of wires and a tip joint disposed at the distal end of the basket, an end of each of the plurality of wires is secured at the tip joint, the end of at least one of the plurality of wires is released from the tip joint when a predetermined force is applied to the basket. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
a handle;
a sheath extending distally from the handle, the sheath having a lumen extending therethrough from a distal end of the sheath to a proximal end of the sheath; and
,an elongate traction member axially disposed within the lumen of the sheath, the traction member distally extending from the handle and connected to the proximal end of the basket.
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19. The device of claim 18 wherein the traction member is selected from a group consisting of a cable, a coil, a shaft, a guidewire and a mandril wire.
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20. The device of claim 18 wherein the traction member and the basket are formed from a single piece of material.
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21. The device of claim 18 wherein the handle comprises at least one actuating mechanism therein.
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22. The device of claim 18 wherein the traction member is slideably moveable relative to the sheath.
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23. The device of claim 18 wherein the traction member is connected to the actuating mechanism.
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24. The device of claim 18, wherein the sheath is slideably moveable relative to the traction member.
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25. The device of claim 18 wherein the sheath is connected to the actuating mechanism.
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26. The device of claim 18 wherein the predetermined force is less than the force required to cause the traction member or at least one wire of the basket to fail.
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27. The device of claim 26 wherein the handle is detachable.
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28. The device of claim 26, wherein the sheath is dimensioned to fit within a working channel of an endoscope.
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29. The device of claim 18 wherein the basket is moveable between a withdrawn position in which the basket is collapsed within the lumen of the sheath, and an expanded position in which the basket extends from the distal end of the sheath and is disposed outside of the lumen for capturing the objects in the body.
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30. The device of claim 29 wherein movement of the basket between the expanded position and the withdrawn position causes the objects in the body to fragment.
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31. The device of claim 18 wherein the basket wires are joined to the traction member by a proximal connector.
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32. The device of claim 31 wherein the proximal connector is selected from a group consisting of an adhesive joint, a solder joint, a welded joint and an over-molding joint.
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33. The device of claim 31 wherein the proximal connector comprises a proximal tubular member having a distal end, a proximal end, and a lumen extending therethrough, wherein the lumen of the proximal tubular member is adapted to receive the proximal end of the basket therein.
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34. The device of claim 33 wherein the lumen of the proximal tubular member is compressed around the basket wires thereby securing the proximal end of the basket therein.
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35. The device of claim 34 wherein the proximal tubular member is manufactured from stainless steel.
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36. A method for removing objects from a body tract, comprising the steps of:
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providing a medical device comprising;
a handle, a sheath extending distally from the handle, the sheath having a lumen extending therethrough from a distal end of the sheath to a proximal end of the sheath, the sheath is dimensioned to fit within a working channel of an endoscope, a basket comprising a plurality of wires and a tip joint disposed at the distal end of the basket, an end of each of the plurality of wires is secured at the tip joint, the end of at least one of the plurality of wires is released from the tip joint when a predetermined force is applied to the basket;
introducing the medical device with the basket in the withdrawn position into the body tract;
shifting the basket into the expanded position;
manipulating the basket to capture the objects therein; and
withdrawing the medical device from the body tract. - View Dependent Claims (37, 38, 39, 40, 41)
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42. A medical device for removing objects from a body, comprising:
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a basket comprising a plurality of wires, a proximal end, and a distal end, the distal end of the basket failing when a predetermined force applied to the basket is less than a force required to cause one of the plurality of wires or the proximal end of the basket to fail. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69)
a handle, a sheath extending distally from the handle, the sheath having a lumen extending therethrough from a distal end of the sheath to a proximal end of the sheath, and an elongate traction member axially disposed within the lumen of the sheath, the traction member distally extending from the handle and connected to a proximal end of the basket.
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53. The device of claim 52 wherein the basket is moveable between a withdrawn position in which the basket is collapsed within the lumen of the sheath, and an expanded position in which the basket extends from the distal end of the sheath and is disposed outside of the lumen for capturing the objects in the body.
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54. The device of claim 52 wherein the handle comprises at least one actuating mechanism therein.
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55. The device of claim 52 wherein the traction member is slideably moveable relative to the sheath.
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56. The device of claim 52 wherein the traction member is connected to the actuating mechanism.
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57. The device of claim 52 wherein the sheath is slideably moveable relative to the traction member.
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58. The device of claim 52 wherein the sheath is connected to the actuating mechanism.
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59. The device of claim 52 wherein the predetermined force is less than the force required to cause the traction member or at least one wire of the basket to fail.
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60. The device of claim 59 wherein the handle is detachable.
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61. The device of claim 59 wherein the sheath is dimensioned to fit within a working channel of an endoscope.
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62. The device of claim 52 wherein the basket wires are joined to the traction member by a proximal connector.
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63. The device of claim 62 wherein the proximal connector comprises an adhesive joint.
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64. The device of claim 62 wherein the proximal connector comprises a solder joint.
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65. The device of claim 62 wherein the proximal connector comprises a welded joint.
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66. The device of claim 62 wherein the proximal connector comprises an over-molding joint.
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67. The device of claim 62 wherein the proximal connector comprises a proximal tubular member having a distal end, a proximal end, and a lumen extending therethrough, wherein the lumen of the proximal tubular member is adapted to receive the proximal end of the basket therein.
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68. The device of claim 67 wherein the lumen of the proximal tubular member is compressed around the basket wires thereby securing the proximal end of the basket therein.
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69. The device of claim 68 wherein the proximal tubular member is manufactured from stainless steel.
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70. A method for removing objects from a body tract, comprising the steps of:
- providing a medical device comprising;
a handle, a sheath extending distally from the handle, the sheath having a lumen extending therethrough from a distal end of the sheath to a proximal end of the sheath, the sheath dimensioned to fit within a working channel of an endoscope, a basket comprising a plurality of wires, a proximal end, and a distal end, the distal end of the basket failing when a predetermined force applied to the basket is less than a force required to cause one of the plurality of wires or the proximal end of the basket to fail, the basket moveable between a withdrawn position in which the basket is collapsed within the lumen of the sheath, and an expanded position in which the basket extends from the distal end of the sheath and is disposed outside of the lumen for capturing the objects in the body;
introducing the medical device with the basket in the withdrawn position into the body tract;
shifting the basket into the expanded position;
manipulating the basket to capture the objects therein; and
withdrawing the medical device from the body tract. - View Dependent Claims (71, 72, 73, 74, 75)
- providing a medical device comprising;
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76. A medical device for removing objects from a body, comprising:
a basket comprising a plurality of wires and a distal end, the distal end of the basket failing when a predetermined force is applied to the basket, wherein the predetermined force is in the range of about 20 pounds to 50 pounds.
Specification