# US 10,117,696 B2 · Cement-directing orthopedic implants > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,117,696 B2 - Document ID: US10117696B2 - Status: Granted - Kind: B2 - Application number: 15/798,669 - Filed: 2017-10-31 - Published: 2018-02-22 - Granted: 2018-11-06 - Earliest claimed: 2004-04-15 - Assignees: Globus Medical, Inc. - Applicants: Globus Medical, Inc. - Inventors: Andrew R. Sennett; William Harwick Gruber; Joseph Ernest Richard - Web page: https://patentgrep.com/patent/US10117696B2 ## CPC - A61B 17/8811: {characterised by the introducer tip, i.e. the part inserted into or onto the bone} - A61B 17/7098: {wherein the implant is permeable or has openings, e.g. fenestrated screw (hollow surgical screws A61B17/864)} - A61B 17/8822: {characterised by means facilitating expulsion of fluid from the introducer, e.g. a screw pump plunger, hydraulic force transmissions, application of vibrations or a vacuum} - A61B 17/8858: {laterally or radially expansible (inflatable A61B17/8855)} - A61F 2/0063: {Implantable repair or support meshes, e.g. hernia meshes} - A61F 2/30907: {Nets or sleeves applied to surface of prostheses or in cement} - A61F 2/442: {Intervertebral or spinal discs, e.g. resilient (non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455)} - A61F 2/4455: {for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages (intervertebral discs A61F2/442)} - A61F 2002/30019: {differing in mechanical expandability, e.g. in mechanical, self- or balloon expandability} - A61F 2002/3008: {radio-opaque, e.g. radio-opaque markers} - A61F 2002/30092: {using shape memory or superelastic materials, e.g. nitinol} - A61F 2002/30243: {the overall spherical surface being composed of a plurality of adjacent circular or polygonal segments, e.g. football-like shaped} - A61F 2002/30451: {soldered or brazed or welded} - A61F 2002/30912: {made of expanded metal, e.g. diamond mesh or metal nets having lozenge-shaped apertures} - A61F 2002/3097: {using laser} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## Abstract A cement-directing structure for use in cement-injection bone therapy includes a collapsible, self-restoring braided structure with regions of differential permeability to the bone cement. The regions of differential permeability may be provided by areas where the braided mesh density is greater or lesser than surrounding areas and/or by means of a baffle. After the structure is placed in a void within a bony structure, cement is injected into the interior of the structure then oozes out in preferred directions according to the locations of the regions of differential permeability. ## Claims ### Claim 1 A surgical method comprising: inserting a device into a cavity in a patient in a first collapsed configuration; and expanding the device to a second expanded configuration in order to maintain walls of the cavity apart from each other, wherein the device includes a collapsible, expandable mesh structure having co-braided primary members and secondary members occupying interstices between said primary members. ### Claim 2 (depends on 1) The method of claim 1, wherein said mesh structure is elastic and capable of self-expansion. ### Claim 3 (depends on 1) The method of claim 1, wherein said mesh structure includes a coating on at least a portion of said mesh structure. ### Claim 4 (depends on 3) The method of claim 3, wherein the coating defines a flow-retarding baffle member. ### Claim 5 (depends on 4) The method of claim 4, wherein the flow-retarding baffle is formed on select regions of said mesh structure. ### Claim 6 (depends on 1) The method of claim 1, wherein the primary and secondary members comprise wire members. ### Claim 7 (depends on 1) The method of claim 1, wherein the primary and secondary members are different from one another. ### Claim 8 (depends on 1) The method of claim 1, wherein the secondary members are smaller than the primary members. ### Claim 9 (depends on 1) The method of claim 1, wherein the first, collapsed configuration is maintained by a sheath. ### Claim 10 (depends on 1) The method of claim 1, wherein said mesh structure has at least one region in which the mesh opening size of said region is greater than the mesh opening size of surrounding regions. ### Claim 11 (depends on 10) The method of claim 10, wherein said mesh structure is configured such that bone cement flows preferentially out of the device through said at least one region of greater mesh opening size. ### Claim 12 (depends on 1) The method of claim 1, wherein said device is generally hollow and has first and second ends, both of which are closed. ### Claim 13 (depends on 1) The method of claim 1, wherein said device is generally hollow and has first and second ends, said first end is fastener closed and said second end is unrestrained. ### Claim 14 A surgical method comprising: inserting a device into a cavity in a patient in a first collapsed configuration; and expanding the device to a second expanded configuration in order to maintain walls of the cavity apart from each other, wherein the device includes a flexible mesh structure having sufficient rigidity to maintain walls of the cavity apart from each other in the second expanded position, wherein the flexible mesh structure having co-braided primary members and secondary members occupying interstices between said primary members. ### Claim 15 (depends on 14) The method of claim 14, wherein said mesh structure has regions of different permeability or flow resistance. ### Claim 16 (depends on 14) The method of claim 14, wherein said structure includes a coating on a portion of outer surface of the mesh structure to control the direction of the bone cement or other orthopedic filler material through the mesh structure. ### Claim 17 (depends on 14) The method of claim 14, wherein the mesh structure is elastic and capable of self-expanding. ### Claim 18 (depends on 17) The method of claim 17, wherein the secondary members are smaller than the primary members. ### Claim 19 (depends on 14) The method of claim 14, wherein the primary and secondary members are wire and are different from one another. ### Claim 20 (depends on 14) The method of claim 14, wherein the first, collapsed configuration is maintained by a sheath.