Source: http://www.google.com/patents/US7462200?dq=6188988
Timestamp: 2017-11-18 05:05:33
Document Index: 271776889

Matched Legal Cases: ['application No. 10', 'application No. 10', 'application No. 10', 'application No. 10', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 07']

Patent US7462200 - Method for tissue grafting - Google Patents
The present invention provides a method for tissue grafting. The method includes obtaining tissue harvested from an individual, obtaining allograft material, placing the allograft material in a chamber, adding the tissue to the allograft material in the chamber with force to create graft material, and...http://www.google.com/patents/US7462200?utm_source=gb-gplus-sharePatent US7462200 - Method for tissue grafting
Publication number US7462200 B2
Application number US 11/286,607
Also published as US6503277, US6638309, US6776938, US6860904, US6905517, US6989029, US7070557, US7727283, US20010008979, US20010027344, US20030045934, US20030050708, US20030125811, US20030130744, US20040169311, US20040172033, US20040172140, US20060106464
Publication number 11286607, 286607, US 7462200 B2, US 7462200B2, US-B2-7462200, US7462200 B2, US7462200B2
Patent Citations (103), Non-Patent Citations (7), Referenced by (18), Classifications (53), Legal Events (10)
US 7462200 B2
The present invention provides a method for tissue grafting. The method includes obtaining tissue harvested from an individual, obtaining allograft material, placing the allograft material in a chamber, adding the tissue to the allograft material in the chamber with force to create graft material, and implanting the graft material in the individual.
1. A method for tissue grafting, the method comprising:
obtaining tissue harvested from an individual;
obtaining allograft material;
placing the allograft material in a chamber;
adding the tissue to the allograft material in the chamber with force to create graft material; and
implanting the graft material in the individual,
wherein air pressure is used to generate the force to create the graft material.
2. The method of claim 1 wherein fluid is expressed from the tissue during the step of adding the tissue to the allograft material.
3. The method of claim 2 wherein the tissue included in the graft material is in a viable living condition.
4. A method for tissue grafting, the method comprising:
removing tissue from a human patient's body;
placing a retainer into a chamber;
adding the tissue to the retainer in the chamber with force to create graft material, wherein air pressure is used to generate the force; and
implanting the graft material in the human patient's body, wherein the tissue included in the graft material is in a viable living condition, the retainer is made of allograft material taken from a donor, and the donor and patient are different individuals.
5. The method of claim 1 further comprising the step of adding an antibiotic to the graft material prior to implanting the graft material.
6. The method of claim 5 wherein the tissue is reduced in volume during the step of adding the tissue to the allograft material.
This application is a continuation of application No. 10/793,287, filed Mar. 4, 2004. The aforementioned application No. 10/793,287 is itself a continuation of application No. 10/279,451, filed Oct. 24, 2002. The aforementioned application No. 10/279,451 is itself a continuation of application No. 09/798,870, filed Mar. 1, 2001, now U.S. Pat. No. 6,503,277 B2. The aforementioned application No. 09/798,870 is itself a continuation of application No. 09/602,743, filed Jun. 23, 2000, now U.S. Pat. No. 6,361,565. The aforementioned application No. 09/602,743 is a continuation of application No. 09/263,006, filed Mar. 5, 1999, now U.S. Pat. No. 6,132,472. The aforementioned application No. 09/263,006 is itself a continuation of application No. 08/834,028, filed Apr. 11, 1997, now U.S. Pat. No. 5,888,219. The aforementioned application No. 08/834,028 is itself a divisional of application No. 08/590,193, filed Jan. 23, 1996, now U.S. Pat. No. 5,662,710. The aforementioned application No. 08/590,193 is itself a divisional of application No. 08/273,028, filed Jul. 8, 1994, now U.S. Pat. No. 5,545,222. The aforementioned application No. 08/273,028 is itself a divisional of application No. 07/728,247, filed Aug. 12, 1991, now U.S. Pat. No. 5,329,846. The benefit of the earlier filing dates of the aforementioned applications and patents is claimed.
FIG. 4A, for example, illustrates the forming elements 50 and 60 of FIG. 1-3 which shape tissue into a cylindrical cross-sectional shape. FIG. 4B illustrates forming elements 100 and 102 which shape tissue into an oblong cross-sectional shape, between a forming surface 104 on the first forming element 100 and a forming surface 106 on the second forming element 102. FIG. 4C illustrates forming elements 108 and 110 which shape tissue into a square cross-sectional shape, between a forming surface 112 on the first forming element 108 and a forming surface 114 on the second forming element 110.
As discussed above, when tissue is compressed, fluid may be expressed from the tissue. In the press 150, the second forming element 180 fits within the first forming element 156 to define between them a closed forming chamber in which the tissue is compressed. Expressed fluid is drained from the forming chamber through the fluid drain opening 160. If a closed forming chamber is not formed, as for example with the open-ended forming elements shown in FIG. 1-4, then expressed fluid can drain outwardly from the tissue being pressed, without the need for a separate fluid drain port. Of course, a separate fluid drain port could be provided in any of the forming elements of the present invention.
Thus, as illustrated schematically in FIGS. 7 and 7A, the tissue press 10 of FIG. 1-4 is being used to compress bone tissue 240 around tendon tissue 242 to form a substitute anterior cruciate ligament 244. The tendon 242 can he harvested from one site and the bone 240 can be harvested from another site.
The retainer may be one of many different shapes. The shape of the retainer is chosen to meet the specific application. There are a number of suitable shapes, such as a ring, a cylinder, a cage, a rectangular shape, a mesh, a suture-like wrap, etc. Some of these are illustrated schematically in FIG. 9A-9F. It should be understood that this is not an exhaustive listing, but rather that these are merely exemplary of the principle involved, and accordingly, the invention is not limited to these particular shapes. For example, a retainer may be provided which is in the particular shape of the tissue material being compressed, which can be rectangular, cylindrical, planar, etc.
Any of these retainers may be made of various materials. The material of the retainer is chosen to meet the specific application. Some of the many materials which are suitable are biodegradable materials, ceramics (especially with bone-growth enhancers, hydroxyapatite, etc.); polymeric material such as Dacron®(a trademark of DuPont, USA) or other known surgical plastics; metal; or composite materials.
If, instead, the implant is made of an expanding material such as PEEK, only a smaller opening is needed, thus reducing trauma to the bone. Although it is best to lock against the cortical bone, it is possible to implant solely in the cancellous bone, which because of the expansion of the implant provides a better fit than a metal implant. A benefit of implanting in the cancellous bone is reduction of the danger of putting the implant in so tightly that the cortical bone is split (wedged open). Further, if the opening in the bone is not exactly the same shape as the outer surface of the implant, the implant expands to provide a custom contoured fit to the bone and provide immediate mechanical stability. Thus, less machining of the bone is needed, while at the same-time obtaining a closer fit.
Thus, as illustrated in FIG. 11-11B, a hip replacement (femoral head) 340 is made of PEEK or another expandable material. The replacement 340 is inserted into an intramedullary channel 342 cut into a femur 344. The replacement 340 is smaller in diameter than the channel 342. The replacement 340 absorbs body fluids and expands to lock itself into the channel 342 in the femur 344. (It should be understood that the scale shown in FIG. 11-11B is exaggerated as to the amount by which the replacement 340 expands.)
US3618605 Nov 12, 1969 Nov 9, 1971 Glassman Jacob A Catamenial tampon
US4092113 Sep 16, 1976 May 30, 1978 Aesculapius Scientific Limited Preparation of blood plasma and serum samples
US4654464 Oct 18, 1984 Mar 31, 1987 Oscobal Ag Bone substitute material on the base of natural bones
US4726373 Sep 26, 1985 Feb 23, 1988 Keymed (Medical & Industrial Equipment) Ltd Wire guided dilator device
US4736850 Oct 17, 1986 Apr 12, 1988 W. L. Gore & Associates, Inc. Endothelial cell harvesting kit
US5166048 * Aug 14, 1991 Nov 24, 1992 Soll David B Protection of human corneal endothelial cells
US6025538 * Nov 20, 1998 Feb 15, 2000 Musculoskeletal Transplant Foundation Compound bone structure fabricated from allograft tissue
US20020151975 * Apr 17, 2001 Oct 17, 2002 Jack Farr Methods and instruments for improved meniscus transplantation
1 * Biology Online.org definition of "culture media" located at http://www.biology-online.org/dictionary/Culture-media.
2 Brian A. Naughton, Hematopoiesis on Nylon Mesh Templates, vol. 18, Nos. 3 & 4, (1987), pp. 219-250.
3 John A. Bierly, Osseous Filtration: An Improved Technique for Bone Implantation, J. Periodontol, Jun. 1974, pp. 414-420.
4 John A. Robertson et al., Fetal Tissue Transplants, Washington University Law Quarterly, vol. 66, No. 3, 1988.
5 John Connolly, Development of an Osteogenic Bone-Marrow Preparation, The Journal of Bone and Joint Surgery, vol. 71-A, Jun. 1989, pp. 684-691.
6 Marcel E. Nimmi, Ectopic Bone Formation Is Enhanced in Senescent Animals Implanted with Embryonic Cells, Clinical Orthopaedic and Related Research 234, (1988), pp. 255-266.
7 Robert E. Marx et al., A Technique for the Compression and Carriage of Autogenous Bone During Bone Grafting Procedures, J. Oral Maxillofac Surg., 45:988-989, 1987.
U.S. Classification 623/23.72, 623/23.63, 623/901
International Classification A61F2/08, B30B11/02, A61F2/30, B30B1/04, A61B17/86, A61F2/02, A61B17/06, A61B17/88, A61F2/46, A61F2/00, A61B17/00, A61F2/36, A61F2/28
Cooperative Classification Y10S623/901, Y10S623/908, A61F2/3662, A61F2/28, A61F2002/30224, B30B11/02, A61F2002/30075, A61F2002/30579, A61B2017/00539, A61F2250/001, B30B1/04, A61B2017/00969, A61F2002/2839, A61B17/1606, A61F2230/0069, A61B2017/00004, A61B2017/00544, A61B17/86, A61F2210/0061, A61F2/3094, A61F2/0811, A61B17/06166, A61F2210/0004, A61F2002/30062, A61F2/08, A61F2002/30545, A61F2/4644, A61F2240/001, A61B17/885
European Classification A61B17/88C, A61F2/36D, A61B17/16C2, B30B1/04, A61F2/46G, B30B11/02, A61F2/28, A61F2/08