Low pressure delivery system and method for delivering a solid and liquid mixture into a target site for medical treatment
First Claim
1. A system for forming an implant to stabilize a vertebral body having an interior of cancellous bone, said system comprising:
- a delivery cannula defining a delivery passage for providing access to the interior of the vertebral body;
a plurality of elements disposed adjacent to one another in said delivery passage of said delivery cannula with a void space defined among said elements, said plurality of elements including a first element adjacent to a second element;
a fluent material capable of setting to a hardened condition disposed within at least a portion of said void space in said delivery passage; and
a push rod slidably disposed within said delivery passage of said delivery cannula to apply a force to said first element to push said first element in said delivery passage and transfer the force through said first element to said second element to move said elements through said delivery passage and into the interior of the vertebral body, said elements simultaneously carrying said fluent material therewith through said delivery passage and into the interior of the vertebral body upon application of said force to said first element whereby said fluent material sets to the hardened condition to secure said elements and form the implant,said delivery cannula including a delivery wall surrounding said delivery passage wherein said delivery wall defines at least one groove separate from said delivery passage, said at least one groove open to said delivery passage and configured to allow said fluent material to flow around said elements and to allow said fluent material to backflow from said void space into said at least one groove so that pressurization of said fluent material is reduced.
4 Assignments
0 Petitions
Accused Products
Abstract
A system for forming an implant to stabilize an interior of a vertebral body is provided. The system includes a delivery cannula. A plurality of elements are disposed adjacent to one another in the delivery cannula with void spaces defined between the elements. A fluent material, capable of setting to a hardened condition, is disposed within at least a portion of the void space in the delivery cannula. A push rod is movably disposed within the delivery cannula to apply a force to move the elements through the delivery cannula and into the interior of the vertebral body. Upon application of the force, the elements simultaneously carry the fluent material through the delivery cannula and into vertebral body to delivery the fluent material at a low pressure. The fluent material sets to the hardened condition to secure the elements and form the implant.
126 Citations
20 Claims
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1. A system for forming an implant to stabilize a vertebral body having an interior of cancellous bone, said system comprising:
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a delivery cannula defining a delivery passage for providing access to the interior of the vertebral body; a plurality of elements disposed adjacent to one another in said delivery passage of said delivery cannula with a void space defined among said elements, said plurality of elements including a first element adjacent to a second element; a fluent material capable of setting to a hardened condition disposed within at least a portion of said void space in said delivery passage; and a push rod slidably disposed within said delivery passage of said delivery cannula to apply a force to said first element to push said first element in said delivery passage and transfer the force through said first element to said second element to move said elements through said delivery passage and into the interior of the vertebral body, said elements simultaneously carrying said fluent material therewith through said delivery passage and into the interior of the vertebral body upon application of said force to said first element whereby said fluent material sets to the hardened condition to secure said elements and form the implant, said delivery cannula including a delivery wall surrounding said delivery passage wherein said delivery wall defines at least one groove separate from said delivery passage, said at least one groove open to said delivery passage and configured to allow said fluent material to flow around said elements and to allow said fluent material to backflow from said void space into said at least one groove so that pressurization of said fluent material is reduced. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for forming an implant in a non-soft body tissue, the system comprising:
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a delivery cannula configured for insertion into the non-soft body tissue and having an open distal end and a proximal end opposite the distal end; an agglomeration of solid beads and fluent material contained within the delivery cannula, the solid beads not being interconnected, the fluent material being capable of setting into a hardened condition; a delivery mechanism attached to the proximal end of the delivery cannula and being configured to urge the agglomeration out of the distal end of the delivery cannula; a first passage configured to hold the solid beads adjacent one another along a delivery axis such that void spaces are defined between the solid beads; a second passage, separate from the first passage, opening into the first passage at a location distal to the proximal end of the delivery cannula, the second passage being configured to allow the fluent material to flow therethrough and into the void spaces between the solid beads and configured to allow the fluent material to backflow from the void spaces into the second passage so that pressurization of the fluent material is reduced; and a plurality of ribs configured to radially support the solid beads and confine the solid beads to the first passage, the first passage being radially inward of the second passage. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification