AU2002320182A1 - Porous sponge matrix medical devices and methods - Google Patents
Porous sponge matrix medical devices and methodsInfo
- Publication number
- AU2002320182A1 AU2002320182A1 AU2002320182A AU2002320182A AU2002320182A1 AU 2002320182 A1 AU2002320182 A1 AU 2002320182A1 AU 2002320182 A AU2002320182 A AU 2002320182A AU 2002320182 A AU2002320182 A AU 2002320182A AU 2002320182 A1 AU2002320182 A1 AU 2002320182A1
- Authority
- AU
- Australia
- Prior art keywords
- matrix
- sponge matrix
- sponge
- medical device
- dry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Description
POROUS SPONGE MATRIX MEDICAL DEVICES AND METHODS
BACKGROUND
The present invention relates generally to medical devices and methods. In one particular aspect, the invention relates to porous sponge matrix devices and materials which are medically useful, for example, to facilitate hemostasis when applied to or within patient tissues .
As further background, sponge matrix devices have found wide application in the medical (including veterinary) fields. Among other things, sponge matrices have been used to provide hemostasis, and to serve as substrates and/or scaffolds in the delivery of therapeutic chemicals, proteins, nucleic acids or cells to patients.
In one facet of medicine, tissue biopsies are often taken from suspect tissue for diagnostic purposes. A wide variety of core biopsy devices and methods have been proposed, all of which typically excise a volume of tissue from the patient. Such procedures can lead to internal bleeding within the biopsied tissues, both due to the removal of tissue and to the needle tract created to extend the sampling
portion of the device to the tissue site from which the biopsy is needed.
In current clinical practice, no measures are taken to try to stop or slow the internal bleeding, and the body is simply allowed to undertake its natural clotting and healing processes. This is perhaps due to the difficulties in treating the affected areas, which are often located in relatively deep tissue of the patient.
Needs exist generally in the medical field for devices, materials and methods for providing treatment of patient tissues, for example tissues from which biopsy samples have been obtained. Such devices, materials and methods, as utilized to treat biopsied tissues, would desirably minimize any further procedure or discomfort to the patient, and would be relatively simple to use. The present invention addresses these needs .
SUMMARY OF THE INVENTION
In one aspect, the present invention provides medical devices that include a dry sponge matrix material in a compressed configuration. The preferred sponge matrix material of the invention defines pores and is stabilized in a compressed state, for example by drying the sponge matrix material in a compressed state. The preferred material is highly dense and compact when dry, but expands substantially when wetted. For example, in advantageous embodiments, the inventive compressed matrix material expands at least 100% by volume when wetted. The sponge matrix material desirably has a density, in its compacted, dry state, of at least about 0.05g/cm3. The preferred matrix material is crosslinked, desirably with a polar crosslinking agent that imparts a hydrophilic character to the matrix material thus improving its wettability. Suitable crosslinking agents for these purposes include for instance polyepoxide compounds such as polyglycidyl ethers .
In preferred embodiments of the invention, the compacted or compressed sponge matrix material of the invention is incorporated in percutaneously-deliverable medical devices. Such devices are advantageously sized and configured for passage through needle and/or catheter cannulas . For example, the present invention provides a . hemostasis device which comprise a compacted, dry sponge matrix, wherein the device is
sized for deployment through a cannula, for example a cannula of a diameter consistent with a core biopsy needle and/or associated catheter.
In another aspect, the invention provides a method for preparing an expandable sponge matrix, which comprises providing a hydrated or otherwise wetted, porous sponge matrix, and drying the material under compression. Drying can be conducted, for instance, by freeze drying or vacuum drying the sponge matrix. Compression forces may be applied in one dimension or multiple dimensions during the drying process .
The invention also provides a method for treating a patient which comprises implanting in the patient a medical device including a compressed sponge matrix of the invention as described above. In a preferred mode, this method provides hemostasis in a biopsy site from which a biopsy tissue sample has been taken.
The invention also provides a tissue biopsy method that includes inserting a cannula (such as a needle cannula) to extend to a tissue site for biopsy, the cannula having an associated cutting member for cutting a sample of tissue from the tissue site. The cutting member is used to cut the sample of tissue, which is extracted from the patient through the cannula. The method also includes delivering to the tissue site through the cannula a hemostatic element formed from a
dry sponge matrix stabilized in a compressed configuration and expansible when wetted.
The present invention provides improved medical devices including sponge matrices which can be used for example in providing hemostasis, and methods for preparing and using the matrices and devices . Additional objects, features and advantages of the invention will be apparent from the descriptions herein.
BRIEF DESCRIPTION OF THE FIGURES
Figure 1 provides a perspective view of a hemostatic sponge pellet device of the invention.
Figures 2A-2C provide cross-sectional views of various stages during the implantation of a compressed sponge pellet device of the invention.
DESCRIPTION OF PREFERRED EMBODIMENTS
For the purpose of promoting an understanding of the principles of the invention, reference will now be made to certain preferred embodiments thereof and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations, further modifications and applications' of the principles of the invention as described herein being contemplated as would normally occur to one skilled in the art to which the invention relates.
As disclosed above, the present invention provides medical sponge matrices which are useful inter alia in hemostasis implant devices. Preferred such devices include compact, dry, sponge elements configured for deployment through a cannula to a biopsy site. The invention also provides methods for using such devices and matrices in the treatment of patients, for example for treatment of biopsied sites. Further, the invention provides methods for preparing highly compact and dense sponge matrices which involve compressing sponge matrices while hydrated, and drying the matrices in their compressed state.
Sponge matrices in accordance with the invention will generally comprise porous, three-dimensionally stable bodies formed from suitable biocompatible matrix materials. For example, suitable biocompatible matrix
materials include naturally-occurring polymers and/or synthetic polymers . More preferred sponge compositions of the invention will comprise collagen as a matrix- forming material, either alone or in combination with one or more other matrix forming materials . In general, sponge matrices of the invention can be formed by providing a liquid solution or suspension of a matrix-forming material, and causing the material to form a porous three-dimensionally stable structure. Other methods are known and can be used within the scope of the present invention.
Illustratively, in the formation of a collagen sponge, a collagen solution can be prepared. The collagen may be derived from mammalian or other animal sources, for example, bovine, porcine or human sources. Synthetically-derived collagen may also be used. The determination of suitable collagen concentrations in the solution will be within the purview of those skilled in the art, with concentration ranges of about 0.05 g/ml to about 0.2 g/ml being typical.
Digestion of the collagen to form the collagen solution is usually carried out under acidic conditions, starting with ground, minced or otherwise comminuted collagen-containing tissue. Optionally, enzymatic digestion may be utilized using known enzymes for this purpose such as pepsin, trypsin, and/or papain. After digestion, the enzymes can be removed by suitable, known techniques.
In further preparative steps, the collagen solution is treated with a precipitating buffer solution to neutralize the pH and precipitate the collagen. This precipitation can occur during incubation over several hours or days . The resulting product can be dried directly, but is preferably crosslinked with a suitable crosslinking agent and then dried. Illustrative crosslinking agents for these purposes include glutaraldehyde, formaldehyde, carbodiimides, UV irradiation, or other crosslinking agents. In preferred embodiments of the invention, the crosslinking agent will contain polar groups that impart a hydrophilic character to the final sponge matrix material. Desirably, a polyepoxide crosslinker is utilized for this purpose, especially a polyglycidyl ether compound. Suitable such compounds include ethylene glycol diglycidyl ether, available under the trade name Denacol EX810 from Nagese Chemical Co., Osaka, Japan, and glycerol polyglycidyl ether available under the trade name Denacol EX313 also from Nagese Chemical Co. Typically, polyglycidyl ethers or other polyepoxide compounds utilized in the invention will have from 2 to about 10 epoxide groups per molecule. The use of such epoxides and/or other crosslinking agents which impart polar groups and a hydrophilic character to the resulting matrix will provide for good wettability and rapid hydration and expansion of hemostasis devices of the invention.
Preferred sources of collagen for use in the sponge matrices of the invention include extracellular matrix materials such as collagenous submucosal tissues, and other collagenous basement membrane materials. These include, for example, small intestinal submucosa, stomach submucosa, urinary bladder submucosa, liver basement membrane, and other basement membrane materials. For additional information as to these collagenous matrix materials and their preparation, reference can be made for example to U.S. Patent Nos. 4,511,653, 4,902,508, 4,956,178, 5,554,389, and 6,099,567, and International Publication Nos. W09825637 and W09822158, each of which is hereby incorporated herein by reference in its entirety. In forming sponge matrices of the invention, these materials are preferably processed and utilized under conditions which retain their favorable growth properties. This may include, for example, processing under conditions in which native proteins and/or other materials, for instance biotropic agents, are retained in their bioactive form. For example, the collagen sources, and resulting sponge matrices, may include active native substances such as one or more growth factors, e.g. basic fibroblast growth factor (FGF-2); transforming growth factor beta (TGFss) ; epidermal growth factor (EFG) ; platelet derived growth factor (PDGF) ; and/or other substances such as glycosaminoglycans (GAGs) ; and/or fibronectin (FN) .
With reference to Fig. 1, in one embodiment of the invention, compact sponge matrices of the invention will be used in forming percutaneously-implantable medical devices. For example, the matrices may be used to provide a small sponge element such as a pellet 10 that is useful for implantation into biopsied tissues to facilitate hemostasis and/or to deliver agents. For deployment, sponge element 10 of the invention will be highly compacted and configured for passage through the cannula of a needle and/or a catheter such as that used to obtain core biopsies. Preferred sponge pellets of the invention will have compacted sizes having diameters "d" preferably less than about 2 millimeters so as to be deployable through a needle of corresponding size, e.g. a needle of size 6 French or smaller. Illustrative lengths "1" for sponge pellets of this diameter are less than about 3 centimeters, typically in the range of about 0.25 to about 3 centimeters . These diameters and lengths may of course be varied to suit a particular patient need.
Preferred dry, compressed sponge matrices (and devices formed therefrom) will be highly dense, typically having densities of at least about 0.05g/cm3, preferably in the range of about 0.05g/cm3 to about 0.2g/cm3, and more preferably about 0.075g/cm3 to about 0.2g/cm3. The preferred compacted sponge matrix will have sufficient rigidity to be deployed by passage through needles or catheters as discussed above, for
example by utilizing a pusher rod or other pusher element to force the sponge matrix device through the needle and/or catheter cannula. Expanded sponge densities (dry) will generally be less than the corresponding compacted densities. Typical expanded densities (dry) will range from about O.Olg/cm3 to about O.lg/cm3, more preferably about 0.02g/cm3 to about 0.07g/cm3.
Sponge matrix materials of the invention will advantageously be highly expandable when wetted, so as to achieve an expanded configuration (see 10A, Fig. 1) . Preferred sponge materials will exhibit the capacity to expand at least 100% by volume, more preferably at least about 200% by volume, and typically in the range of about 300% by volume to about 1000% by volume, when wetted to saturation with deionized water. Preferred sponge materials of the invention will also exhibit advantageous rates of expansion, achieving volume expansions as noted above in less than about 10 seconds, more preferably less than about 5 seconds, when immersed in deionized water.
The expanded sizes typical for hemostatic sponge pellets of the invention include diameters "D" of about 0.5cm to about 3cm, and lengths "L" of about 0.5cm to 3cm. Such levels of expansion and final sizes are expected to exert compression on surrounding tissues when implanted, so as to benefit the patient by
providing a hemostatic effect within the biopsied tissue. Alternatively or in addition, the pellets may deliver active agents to the implantation site and surrounding tissue.
Highly compact, dense sponge matrices of the invention can be prepared by first hydrating or otherwise wetting a porous sponge matrix, and then compressing and drying the element . Such preparative processes generally provide a more dense, rigid and stably compressed sponge matrix than processes such as simple compaction of the dry sponge matrix. Drying will be conducted sufficiently to stabilize the sponge matrix. For example, preferred drying procedures will reduce the liquid (e.g. water) content of the matrix to less than about 20% by weight, more preferably less than about 10% by weight. Compression forces will be applied so as to achieve a final density and/or configuration desired, and can be applied in one, two or three dimensions, including radially. For example, a sponge pellet prepared from the inventive matrices can have a generally cylindrical shape having a circular or multi-sided (e.g. square or rectangular) cross section, and can have a diameter approximating that or smaller than that of the needle and/or catheter cannula through which it is to be passed. The drying of the compacted element can involve lyophilization (or freeze drying) or vacuum drying at ambient or elevated temperatures. When processed in this fashion, upon removal of the compaction force, the sponge matrix is
stabilized structurally and remains in its highly dense and compacted state until contacted with a liquid susceptible to absorption by the matrix, for example body fluids . The pores of the matrix are thereby stably retained at a volume substantially reduced from their maximum volume, but return to a partially or fully expanded state when the matrix material is wetted.
Sponge elements or other devices of the invention may be formed individually by compaction/drying of an appropriately sized sponge element, or they may be individually excised from a larger compacted/dried sponge matrix.
For medical use, the compacted or compressed sponge matrix device can be sterilized using any suitable means, including for example radiation. The device will be suitably packaged in sterile packaging for medical use, to form medical articles of the invention. In this regard, products of the invention may include biopsy kits containing at least one needle for obtaining a biopsy, and at least one sponge pellet of the invention. Suitable biopsy devices including needles include for example Quick-Core® biopsy needles or Twist-Core® biopsy needles available from Cook Diagnostic & Interventional Products .
In use in a biopsy procedure, after a core biopsy has been obtained, sponge elements of the invention are
implanted into the biopsy site, for instance including the site of the excised tissue and/or the needle tract from the biopsy procedure. Implantation of the sponge element can be achieved through a cannula disposed within the biopsy needle tract. With reference now to Figs. 2A-2C, in a preferred method, the biopsy procedure is performed with a biopsy device including an outer cannula 20 and an inner sampling needle (not shown) . The inner sampling needle is used to obtain the biopsy tissue from the target patient tissue area 21 and withdrawn from the outer needle cannula, which is left in place. Thereafter, a sponge element 10 of the invention can be passed through the outer cannula (Fig. 2A) , for example using a rod 22 or other device or mechanism to force the sponge element through the outer cannula and out an opening thereof (Fig. 2B) . If desired, multiple sponge elements can be delivered to a single biopsy site. After placement of the sponge element or elements of the invention, the outer cannula can be withdrawn (Fig. 2C) , leaving the sponge devices in place in the affected tissue.
Sponge elements or other devices of the invention may also contain one or more active agents therapeutic to the patient. For example, they may include proteins or other substances which promote clotting, for example Thrombin and/or Fibrinogen. Alternatively or in addition, sponge elements or other devices of the invention may include local anesthetics to be delivered to the affected (e.g. biopsied) tissue, and/or growth
factors to promote tissue growth and healing within the affected tissue. Illustratively, such active agents can be included in the liquid used to wet the sponge prior to compression.
Sponge elements of the invention may also contain agents which promote further retention of the compressed, high density form of the elements. These may include for example starch, cellulose, sugars such as dextrose, or glycerin. Such agents can optionally be included in the liquid (preferably aqueous) used to hydrate or otherwise wet the sponge prior to compaction and drying .
For the purpose of promoting the further understanding of the present invention and its advantages, the following specific examples are provided. It will be understood that these examples are illustrative and not limiting of the invention.
EXAMPLE 1
Fifty grams of SIS tissue, cut into two-centimeter length pieces, are added to 200 milliliters of a 0.1% pepsin in 0.5 M aqueous acetic acid solution. The resulting preparation is incubated at 37°C for about 48 hours with stirring. Optionally, any undigested material at that point may be removed by centrifugation at 12,000 RPM for 20 minutes at room temperature. The gelled preparation is dialyzed (molecular weight cutoff
of 3500) against several changes of phosphate buffered saline (pH 7.4) over 48 hours at 4°C. The gelled solution is then stored at 4°C until ready for use. The chilled SIS gel is spread into a mold of desired shape and submersed in a collagen crosslinking solution. The crosslinking solution contains 2%vol/vol diglycidyl ether plus 20%vol/vol ethanol solution at 4°C for 3-6 days. The resulting crosslinked SIS forms are removed from the crosslinking solution and frozen in a -80°C freezer. The frozen SIS forms are then lyophilized over a period of approximately 8 hours. The SIS forms are then soaked in several baths of high purity water, ringing residual water from the SIS sponge material between rinses .
EXAMPLE 2
An SIS sponge material in hydrated form, prepared as in Example 1, is placed between two ridged plates and compressed. The plates are clamped so that compression is maintained, and the clamped structure is lyophilized over a period of approximately 1-2 hours. The rigid plates are removed, leaving the SIS sponge material in a highly densed, compacted, flattened shape. This compacted material is highly absorbent and expandable, and can be used in a variety of medical applications. In one embodiment a sponge pellet configured for percutaneous insertion through the cannula of a catheter and/or needle is cut from the compacted SIS sponge matrix.
EXAMPLE 3
A crosslinked SIS sponge matrix, prepared as in Example 1, was swollen in a 0.9% USP saline for injection solution. This material was used alongside a sample of GELFOAM in testing to determine the coagulation time of untreated whole human blood in the presence of the materials. The average clotting time for both materials was 8 minutes, within the normal coagulation time for human blood.
While the invention has been detailed in the foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiment has been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected. Further, all publications cited herein are considered indicative of the skills possessed by those in the art, and all such publications are hereby incorporated herein by reference in their entirety.
Claims (45)
1. A medical device, comprising: a dry sponge matrix defining pores, said sponge matrix stabilized in a compressed configuration and expansible when wetted.
2. The medical device of claim 1, wherein said sponge matrix is formed from matrix-forming material including collagen.
3. The medical device of claim 1, wherein said device is configured for percutaneous delivery.
4. The medical device of claim 2, wherein said device is configured for percutaneous delivery.
5. The medical device of claim 1, wherein said dry sponge matrix is expansible at least about 100% by volume when saturated with deionized water.
6. The medical device of claim 2 , wherein said dry sponge matrix is expansible at least about 100% by volume when saturated with deionized water.
7. The medical device of claim 6, wherein said dry sponge matrix has a density of least about
0.05g/cm3.
8. The medical device of claim 7 , wherein said dry sponge matrix has a density in the range of about
0.05g/cm3 to about 0.2g/cm3.
9. The medical device of claim 8, wherein said dry sponge matrix has a density in the range of about
0.075g/cm3 to about 0.2g/cm3.
10. The medical device of claim 1, wherein said sponge matrix comprises at least one biotropic agent.
11. The medical device of claim 1, wherein said sponge matrix comprises collagen from an extracellular matrix.
12. The medical device of claim 11, wherein said sponge matrix comprises at least one active biotropic agent from said extracellular matrix.
13. The medical device of claim 11, wherein said extracellular matrix is submucosa or basement membrane.
14. The medical device of claim 12 , wherein said extracellular matrix is submucosa or basement membrane.
15. The medical device of claim 2 , wherein said sponge matrix is crosslinked.
16. The medical device of claim 15, wherein said sponge matrix is crosslinked with a chemical crosslinking agent providing polar groups in the matrix.
17. The medical device of claim 16, wherein said crosslinking agent is a polyepoxide compound.
18. The medical device of claim 17, wherein said polyexpoxide compound is a polyglycidyl ether compound.
19. The medical device of claim 18, wherein said polygylcidyl ether compound is a diglycidyl ether compound.
20. A method for preparing a compressed sponge matrix, comprising, comprising: providing a wetted porous sponge matrix; compressing said wetted sponge matrix; and drying said sponge matrix to form a dry, compressed sponge matrix.
21. The method of claim 20, wherein said sponge matrix is formed from matrix-forming material including collagen.
22. The method of claim 20, wherein said dry sponge matrix is expansible at least about 100% by volume when saturated with deionized water.
23. The method of claim 21, wherein said dry sponge matrix is expansible at least about 100% by volume when saturated with deionized water.
24. The method of claim 23, wherein said dry, compressed sponge matrix has a density of least about
0.05g/cm3.
25. The method of claim 24, wherein said dry, compressed sponge matrix has a density in the range of about 0.05g/cm3 to about 0.2g/cm3.
26. The method of claim 25, wherein said sponge matrix comprises at least one active biotropic agent.
27. The method of claim 20, wherein said sponge matrix comprises collagen from an extracellular matrix.
28. The method of claim 27, wherein said sponge matrix comprises at least one active biotropic agent from said extracellular matrix.
29. The method of claim 28, wherein said extracellular matrix is submucosa or basement membrane.
30. The method of claim 20, wherein said sponge matrix is crosslinked.
31. The method of claim 30, wherein said sponge matrix is crosslinked with a chemical crosslinking agent providing polar groups in the matrix.
32. The method of claim 31, wherein said crosslinking agent is a polyepoxide compound.
33. The method of claim 32, wherein said polyexpoxide compound is a polyglycidyl ether compound.
34. A device useful for providing hemostasis in a tissue biopsy site, comprising: an element formed from a dry sponge matrix and configured for percutaneous delivery to the biopsy site, said sponge matrix stabilized in a compressed configuration and expansible when wetted.
35. The device of claim 34, wherein said sponge matrix comprises collagen and is crosslinked.
36. The device of claim 35, wherein said sponge matrix is crosslinked with a chemical crosslinking agent providing polar groups in the matrix.
37. The device of claim 36, wherein the chemical crosslinking agent is a polyepoxide compound.
38. The device of claim 37, wherein the polyepoxide compound is a polyglycidyl ether compound.
39. The device of claim 35, wherein said dry sponge matrix has a density of at least about 0.05 g/cm3 and is expansible at least 100% by volume when wetted.
40. A sponge device, comprising: a dry, compressed sponge matrix defining pores, said sponge matrix having a density of at least about 0.05 g/cm3 and expansible at least about 100% by volume when saturated with deionized water.
41. A method for providing hemostasis in a biopsy site from which a biopsy tissue sample has been taken, comprising implanting in the biopsy tract a hemostatic element formed from a dry sponge matrix stabilized in a compressed configuration and expansible when wetted.
42. The method of claim 41, wherein said implanting is conducted percutaneously.
43. The method of claim 42, wherein said percutaneously implanting comprises delivering said hemostatic element through a cannula used in obtaining the biopsy tissue sample.
44. A tissue biopsy method, comprising: inserting a cannula to extend to a tissue site for biopsy, said cannula having an associated cutting member for cutting a sample of tissue from the tissue site; cutting the sample of tissue with said cutting member; extracting the sample of tissue through said cannula; and delivering to the tissue site through the cannula a hemostatic element formed from a dry sponge matrix stabilized in a compressed configuration and expansible when wetted.
45. The method of claim 44, wherein said cannula comprises a needle cannula.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US30224501P | 2001-06-29 | 2001-06-29 | |
US60/302,245 | 2001-06-29 | ||
PCT/US2002/020462 WO2003002168A1 (en) | 2001-06-29 | 2002-06-28 | Porous sponge matrix medical devices and methods |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2002320182A1 true AU2002320182A1 (en) | 2003-05-15 |
AU2002320182B2 AU2002320182B2 (en) | 2008-02-21 |
Family
ID=23166916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2002320182A Ceased AU2002320182B2 (en) | 2001-06-29 | 2002-06-28 | Porous sponge matrix medical devices and methods |
Country Status (5)
Country | Link |
---|---|
US (1) | US8877233B2 (en) |
EP (1) | EP1404390B1 (en) |
AU (1) | AU2002320182B2 (en) |
CA (1) | CA2452040C (en) |
WO (1) | WO2003002168A1 (en) |
Families Citing this family (108)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8123814B2 (en) | 2001-02-23 | 2012-02-28 | Biomet Manufacturing Corp. | Method and appartus for acetabular reconstruction |
US7597715B2 (en) | 2005-04-21 | 2009-10-06 | Biomet Manufacturing Corp. | Method and apparatus for use of porous implants |
US20030088240A1 (en) * | 2001-11-02 | 2003-05-08 | Vahid Saadat | Methods and apparatus for cryo-therapy |
US7550004B2 (en) * | 2002-08-20 | 2009-06-23 | Cook Biotech Incorporated | Endoluminal device with extracellular matrix material and methods |
US8709038B2 (en) * | 2002-12-20 | 2014-04-29 | Boston Scientific Scimed, Inc. | Puncture hole sealing device |
US20040122349A1 (en) * | 2002-12-20 | 2004-06-24 | Lafontaine Daniel M. | Closure device with textured surface |
US7942897B2 (en) * | 2003-07-10 | 2011-05-17 | Boston Scientific Scimed, Inc. | System for closing an opening in a body cavity |
US20050020899A1 (en) * | 2003-07-25 | 2005-01-27 | Rubicor Medical, Inc. | Post-biopsy cavity treatmetn implants and methods |
US7744852B2 (en) | 2003-07-25 | 2010-06-29 | Rubicor Medical, Llc | Methods and systems for marking post biopsy cavity sites |
US7537788B2 (en) * | 2003-07-25 | 2009-05-26 | Rubicor Medical, Inc. | Post-biopsy cavity treatment implants and methods |
US7645229B2 (en) * | 2003-09-26 | 2010-01-12 | Armstrong David N | Instrument and method for endoscopic visualization and treatment of anorectal fistula |
WO2005053547A2 (en) | 2003-11-28 | 2005-06-16 | Cook Incorporated | Vascular occlusion methods, systems and devices |
CN102551814B (en) | 2004-01-21 | 2015-09-09 | 库克医疗技术有限公司 | Be used for the implantable graft of closed fistula |
GB2430626B (en) | 2004-02-09 | 2008-09-24 | Cook Biotech Inc | Stent graft devices having collagen coating |
US20080089933A1 (en) | 2006-10-16 | 2008-04-17 | Amir Alon | Device and method for reducing calorie intake |
WO2005094694A2 (en) | 2004-03-29 | 2005-10-13 | Cook Biotech Incorporated | Medical graft products with differing regions and methods and systems for producing the same |
EP1827250B1 (en) * | 2004-08-31 | 2018-05-16 | Cook Medical Technologies LLC | Device for treating an aneurysm |
US7744621B2 (en) * | 2004-12-06 | 2010-06-29 | Cook Incorporated | Inflatable occlusion devices, methods, and systems |
US8066732B2 (en) * | 2004-12-30 | 2011-11-29 | Cook Incorporated | Inverting occlusion devices, methods, and systems |
US9138445B2 (en) * | 2005-03-09 | 2015-09-22 | Cook Biotech Incorporated | Medical graft materials with adherent extracellular matrix fibrous mass |
US8292967B2 (en) * | 2005-04-21 | 2012-10-23 | Biomet Manufacturing Corp. | Method and apparatus for use of porous implants |
US8021432B2 (en) | 2005-12-05 | 2011-09-20 | Biomet Manufacturing Corp. | Apparatus for use of porous implants |
US8266780B2 (en) * | 2005-04-21 | 2012-09-18 | Biomet Manufacturing Corp. | Method and apparatus for use of porous implants |
US8066778B2 (en) * | 2005-04-21 | 2011-11-29 | Biomet Manufacturing Corp. | Porous metal cup with cobalt bearing surface |
US9788821B2 (en) | 2005-04-29 | 2017-10-17 | Cook Biotech Incorporated | Physically modified extracellular matrix materials and uses thereof |
JP4995811B2 (en) | 2005-04-29 | 2012-08-08 | クック・バイオテック・インコーポレーテッド | Acupuncture positive displacement implants and related methods and systems |
JP5149162B2 (en) * | 2005-04-29 | 2013-02-20 | クック・バイオテック・インコーポレーテッド | Vaginal graft with deformable sheet material |
EP1903947B1 (en) | 2005-06-21 | 2015-12-30 | Cook Medical Technologies LLC | Implantable graft to close a fistula |
CN1903144A (en) * | 2005-07-29 | 2007-01-31 | 广东冠昊生物科技有限公司 | Biological artificial ligamentum and method for preparing same |
CN1903143A (en) * | 2005-07-29 | 2007-01-31 | 广东冠昊生物科技有限公司 | Biological type artificial blood vessel and method for preparing the same |
CN100482178C (en) * | 2005-08-04 | 2009-04-29 | 广东冠昊生物科技有限公司 | Blood vessel tumor clip with biological film |
US8057495B2 (en) * | 2005-09-13 | 2011-11-15 | Cook Medical Technologies Llc | Aneurysm occlusion device |
CA2630452C (en) * | 2005-12-02 | 2011-02-22 | Cook Incorporated | Devices, systems, and methods for occluding a defect |
CN1985778B (en) * | 2005-12-20 | 2010-10-13 | 广东冠昊生物科技股份有限公司 | Artificial biological cornea |
CN1986007B (en) * | 2005-12-20 | 2011-09-14 | 广东冠昊生物科技股份有限公司 | Biological surgical patch |
CN1986001B (en) * | 2005-12-20 | 2011-09-14 | 广东冠昊生物科技股份有限公司 | Biological wound-protecting film |
CN1986006A (en) | 2005-12-20 | 2007-06-27 | 广州知光生物科技有限公司 | Biological nerve duct |
AU2007210970B2 (en) * | 2006-01-31 | 2013-09-05 | Cook Biotech Incorporated | Fistula grafts and related methods and systems for treating fistulae |
US7635447B2 (en) * | 2006-02-17 | 2009-12-22 | Biomet Manufacturing Corp. | Method and apparatus for forming porous metal implants |
WO2007147127A2 (en) | 2006-06-15 | 2007-12-21 | Cook Incorporated | Methods, systems, and devices for the delivery of endoluminal prostheses |
JP5269779B2 (en) | 2006-06-21 | 2013-08-21 | クック・バイオテック・インコーポレーテッド | Acupuncture grafts and related methods and systems useful for the treatment of gastrointestinal fistulas |
CN101332314B (en) * | 2008-07-22 | 2012-11-14 | 广东冠昊生物科技股份有限公司 | Biotype articular cartilage repair piece |
CN101332316B (en) * | 2008-07-22 | 2012-12-26 | 广东冠昊生物科技股份有限公司 | Biotype nose bridge implantation body |
US20100023129A1 (en) * | 2008-07-22 | 2010-01-28 | Guo-Feng Xu | Jawbone prosthesis and method of manufacture |
WO2008024920A1 (en) * | 2006-08-24 | 2008-02-28 | Wilson-Cook Medical Inc. | Devices and methods for occluding a fistula |
US8343536B2 (en) | 2007-01-25 | 2013-01-01 | Cook Biotech Incorporated | Biofilm-inhibiting medical products |
WO2008124361A2 (en) * | 2007-04-06 | 2008-10-16 | Cook Biotech Incorporated | Fistula plugs having increased column strength and fistula plug delivery apparatuses and methods |
US20080279833A1 (en) * | 2007-05-10 | 2008-11-13 | Matheny Robert G | Laminate sheet articles for tissue regeneration |
US8932619B2 (en) * | 2007-06-27 | 2015-01-13 | Sofradim Production | Dural repair material |
US20090004455A1 (en) * | 2007-06-27 | 2009-01-01 | Philippe Gravagna | Reinforced composite implant |
US8535349B2 (en) * | 2007-07-02 | 2013-09-17 | Cook Biotech Incorporated | Fistula grafts having a deflectable graft body portion |
DE102007037053A1 (en) * | 2007-07-24 | 2009-01-29 | Aesculap Ag | Hemostatic for minimally invasive surgery |
US9113851B2 (en) | 2007-08-23 | 2015-08-25 | Cook Biotech Incorporated | Fistula plugs and apparatuses and methods for fistula plug delivery |
US20090068250A1 (en) | 2007-09-07 | 2009-03-12 | Philippe Gravagna | Bioresorbable and biocompatible compounds for surgical use |
US20090069843A1 (en) * | 2007-09-10 | 2009-03-12 | Agnew Charles W | Fistula plugs including a hydration resistant component |
US8029560B2 (en) * | 2007-09-12 | 2011-10-04 | Cook Medical Technologies Llc | Enhanced remodelable materials for occluding bodily vessels |
US20090084491A1 (en) * | 2007-09-25 | 2009-04-02 | Biomet Manufacturing Corp. | Cementless Tibial Tray |
US9308068B2 (en) * | 2007-12-03 | 2016-04-12 | Sofradim Production | Implant for parastomal hernia |
WO2009111306A2 (en) * | 2008-02-29 | 2009-09-11 | Cook Biotech Incorporated | Coated embolization device |
GB2471632B (en) | 2008-05-02 | 2012-04-18 | Cook Biotech Inc | Self deploying SIS in needle |
GB2471635B (en) * | 2008-05-29 | 2012-09-26 | Cook Biotech Inc | Devices for treating rectovaginal and other fistulae |
US9295757B2 (en) | 2008-06-10 | 2016-03-29 | Cook Biotech Incorporated | Quilted implantable graft |
CA2728240C (en) * | 2008-06-10 | 2016-11-15 | Cook Biotech Incorporated | Quilted implantable graft |
CA2734560C (en) * | 2008-06-20 | 2018-10-23 | Cook Biotech Incorporated | Composite extracellular matrix materials and medical products formed therefrom |
US9242026B2 (en) * | 2008-06-27 | 2016-01-26 | Sofradim Production | Biosynthetic implant for soft tissue repair |
WO2010129587A1 (en) * | 2009-05-04 | 2010-11-11 | Oregon Biomedical Engineering Institute, Inc. | Hemorrhage control devices and methods |
US8652500B2 (en) | 2009-07-22 | 2014-02-18 | Acell, Inc. | Particulate tissue graft with components of differing density and methods of making and using the same |
FR2949688B1 (en) | 2009-09-04 | 2012-08-24 | Sofradim Production | FABRIC WITH PICOTS COATED WITH A BIORESORBABLE MICROPOROUS LAYER |
EP2621549B1 (en) | 2010-09-28 | 2015-10-21 | Cook Biotech Incorporated | Device for treating fistulae and other bodily openings and passageways |
FR2972626B1 (en) | 2011-03-16 | 2014-04-11 | Sofradim Production | PROSTHETIC COMPRISING A THREE-DIMENSIONAL KNIT AND ADJUSTED |
EP2717790B1 (en) | 2011-06-06 | 2019-08-21 | Muffin Incorporated | Vascular occlusion devices |
WO2012174234A2 (en) | 2011-06-14 | 2012-12-20 | Cook Medical Technologies Llc | Fistula closure devices and methods |
FR2977789B1 (en) | 2011-07-13 | 2013-07-19 | Sofradim Production | PROSTHETIC FOR UMBILIC HERNIA |
FR2977790B1 (en) | 2011-07-13 | 2013-07-19 | Sofradim Production | PROSTHETIC FOR UMBILIC HERNIA |
JP2014528264A (en) | 2011-09-30 | 2014-10-27 | ソフラディム・プロダクション | Reversible hardness of light weight mesh |
CN103841959A (en) | 2011-09-30 | 2014-06-04 | 索弗拉狄姆产品公司 | Multilayer implants for delivery of therapeutic agents |
FR2985271B1 (en) | 2011-12-29 | 2014-01-24 | Sofradim Production | KNITTED PICOTS |
FR2985170B1 (en) | 2011-12-29 | 2014-01-24 | Sofradim Production | PROSTHESIS FOR INGUINAL HERNIA |
US10130346B2 (en) * | 2012-07-24 | 2018-11-20 | Omrix Biopharmaceuticals Ltd. | Device and method for the application of a curable fluid composition to a bodily organ |
FR2994185B1 (en) | 2012-08-02 | 2015-07-31 | Sofradim Production | PROCESS FOR THE PREPARATION OF A POROUS CHITOSAN LAYER |
FR2995779B1 (en) | 2012-09-25 | 2015-09-25 | Sofradim Production | PROSTHETIC COMPRISING A TREILLIS AND A MEANS OF CONSOLIDATION |
FR2995778B1 (en) | 2012-09-25 | 2015-06-26 | Sofradim Production | ABDOMINAL WALL REINFORCING PROSTHESIS AND METHOD FOR MANUFACTURING THE SAME |
FR2995788B1 (en) | 2012-09-25 | 2014-09-26 | Sofradim Production | HEMOSTATIC PATCH AND PREPARATION METHOD |
AU2013322268B2 (en) | 2012-09-28 | 2017-08-31 | Sofradim Production | Packaging for a hernia repair device |
USD754325S1 (en) | 2013-06-06 | 2016-04-19 | Omrix Biopharmaceuticals Ltd. | Device of a curable fluid composition to a bodily organ |
FR3006581B1 (en) | 2013-06-07 | 2016-07-22 | Sofradim Production | PROSTHESIS BASED ON TEXTILE FOR LAPAROSCOPIC PATHWAY |
FR3006578B1 (en) | 2013-06-07 | 2015-05-29 | Sofradim Production | PROSTHESIS BASED ON TEXTILE FOR LAPAROSCOPIC PATHWAY |
US9775598B2 (en) | 2014-07-20 | 2017-10-03 | New York University | Anchored suture line, device and method for surgical suturing |
EP3000489B1 (en) | 2014-09-24 | 2017-04-05 | Sofradim Production | Method for preparing an anti-adhesion barrier film |
EP3000433B1 (en) | 2014-09-29 | 2022-09-21 | Sofradim Production | Device for introducing a prosthesis for hernia treatment into an incision and flexible textile based prosthesis |
EP3000432B1 (en) | 2014-09-29 | 2022-05-04 | Sofradim Production | Textile-based prosthesis for treatment of inguinal hernia |
EP3029189B1 (en) | 2014-12-05 | 2021-08-11 | Sofradim Production | Prosthetic porous knit, method of making same and hernia prosthesis |
US9238090B1 (en) | 2014-12-24 | 2016-01-19 | Fettech, Llc | Tissue-based compositions |
EP3059255B1 (en) | 2015-02-17 | 2020-05-13 | Sofradim Production | Method for preparing a chitosan-based matrix comprising a fiber reinforcement member |
CN107427304A (en) * | 2015-03-26 | 2017-12-01 | 波士顿科学国际有限公司 | Inflatable plugging device based on biology |
EP3085337B1 (en) | 2015-04-24 | 2022-09-14 | Sofradim Production | Prosthesis for supporting a breast structure |
ES2676072T3 (en) | 2015-06-19 | 2018-07-16 | Sofradim Production | Synthetic prosthesis comprising a knitted fabric and a non-porous film and method of forming it |
EP3195830B1 (en) | 2016-01-25 | 2020-11-18 | Sofradim Production | Prosthesis for hernia repair |
WO2017147306A1 (en) * | 2016-02-25 | 2017-08-31 | William Yuen | Smart garment |
WO2018051205A1 (en) * | 2016-09-16 | 2018-03-22 | Universidad De Los Andes | Extracellular-matrix haemostatic plug for percutaneous biopsies and device for the production thereof |
EP3312325B1 (en) | 2016-10-21 | 2021-09-22 | Sofradim Production | Method for forming a mesh having a barbed suture attached thereto and the mesh thus obtained |
WO2018140967A1 (en) * | 2017-01-30 | 2018-08-02 | Slendine Ag | Matrix materials having mechanically-shaped sponge architecture and methods of preparing thereof |
EP3398554A1 (en) | 2017-05-02 | 2018-11-07 | Sofradim Production | Prosthesis for inguinal hernia repair |
CN108714241A (en) * | 2018-06-22 | 2018-10-30 | 中国人民解放军陆军军医大学第附属医院 | Application of the SIS epoxy resins in preparing hemostatic material |
EP3653171A1 (en) | 2018-11-16 | 2020-05-20 | Sofradim Production | Implants suitable for soft tissue repair |
CN110975010B (en) * | 2019-11-25 | 2022-02-15 | 银丰低温医学科技有限公司 | Placenta tissue matrix material and preparation method thereof |
CN113289063A (en) * | 2021-05-27 | 2021-08-24 | 江阴市人民医院 | Biological material for soft tissue repair and preparation method thereof |
CN116036353A (en) * | 2022-12-05 | 2023-05-02 | 上海七木医疗器械有限公司 | Absorbable embolic material and preparation method and application thereof |
Family Cites Families (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB887844A (en) | 1958-11-13 | 1962-01-24 | John Straythorn Robins | Surgical dressing |
US3566871A (en) | 1968-06-11 | 1971-03-02 | American Cyanamid Co | Hydrophilic medical sponge and method of using same |
US3823212A (en) * | 1968-11-27 | 1974-07-09 | Freudenberg C Fa | Process for the production of collagen fiber fabrics in the form of felt-like membranes or sponge-like layers |
US3810473A (en) | 1972-12-04 | 1974-05-14 | Avicon Inc | Liquid-laid, non-woven, fibrous collagen derived surgical web having hemostatic and wound sealing properties |
US4193813A (en) | 1976-09-07 | 1980-03-18 | Medi-Coll, Inc. | Method for making collagen sponge |
US4271835A (en) | 1978-05-17 | 1981-06-09 | Kcdp Corporation | Fluid-expansible contraceptive tampon and applicator |
FR2516927B1 (en) | 1981-11-26 | 1986-05-23 | Merieux Fond | PROCESS FOR THE INDUSTRIAL PREPARATION OF COLLAGENIC MATERIALS FROM HUMAN PLACENTARY TISSUES, HUMAN COLLAGENIC MATERIALS OBTAINED, THEIR APPLICATION AS BIOMATERIALS |
US4578067A (en) | 1982-04-12 | 1986-03-25 | Alcon (Puerto Rico) Inc. | Hemostatic-adhesive, collagen dressing for severed biological surfaces |
IL74715A0 (en) * | 1984-03-27 | 1985-06-30 | Univ New Jersey Med | Biodegradable matrix and methods for producing same |
US4852568A (en) | 1987-02-17 | 1989-08-01 | Kensey Nash Corporation | Method and apparatus for sealing an opening in tissue of a living being |
US4846793A (en) | 1987-03-18 | 1989-07-11 | Endocon, Inc. | Injector for implanting multiple pellet medicaments |
US5219576A (en) | 1988-06-30 | 1993-06-15 | Collagen Corporation | Collagen wound healing matrices and process for their production |
US4902508A (en) | 1988-07-11 | 1990-02-20 | Purdue Research Foundation | Tissue graft composition |
US4956178A (en) | 1988-07-11 | 1990-09-11 | Purdue Research Foundation | Tissue graft composition |
US5391183A (en) | 1990-09-21 | 1995-02-21 | Datascope Investment Corp | Device and method sealing puncture wounds |
US5108421A (en) | 1990-10-01 | 1992-04-28 | Quinton Instrument Company | Insertion assembly and method of inserting a vessel plug into the body of a patient |
US5206028A (en) * | 1991-02-11 | 1993-04-27 | Li Shu Tung | Dense collagen membrane matrices for medical uses |
GR920100122A (en) * | 1991-04-05 | 1993-03-16 | Ethicon Inc | Ionically crosslinked carboxyl-containing polysaccharides for adhension prevention. |
US5326350A (en) * | 1992-05-11 | 1994-07-05 | Li Shu Tung | Soft tissue closure systems |
US5279555A (en) | 1992-08-24 | 1994-01-18 | Merck & Co., Inc. | Device for injecting implants |
AU4926193A (en) * | 1992-09-21 | 1994-04-12 | Vitaphore Corporation | Embolization plugs for blood vessels |
US5334216A (en) | 1992-12-10 | 1994-08-02 | Howmedica Inc. | Hemostatic plug |
US5388588A (en) * | 1993-05-04 | 1995-02-14 | Nabai; Hossein | Biopsy wound closure device and method |
US5325857A (en) | 1993-07-09 | 1994-07-05 | Hossein Nabai | Skin biopsy device and method |
US5394886A (en) | 1993-09-20 | 1995-03-07 | Nabai; Hossein | Skin biopsy plug and method |
US6130264A (en) | 1994-10-06 | 2000-10-10 | Xomed Surgical Products, Inc. | Synthetic sponge and surgical spear comprising synthetic sponge |
US5674298A (en) | 1994-10-21 | 1997-10-07 | The Board Of Regents Of The University Of Michigan | Calcification-resistant bioprosthetic tissue and methods of making same |
US5554389A (en) | 1995-04-07 | 1996-09-10 | Purdue Research Foundation | Urinary bladder submucosa derived tissue graft |
US6183497B1 (en) | 1998-05-01 | 2001-02-06 | Sub-Q, Inc. | Absorbable sponge with contrasting agent |
US6071301A (en) * | 1998-05-01 | 2000-06-06 | Sub Q., Inc. | Device and method for facilitating hemostasis of a biopsy tract |
CZ54899A3 (en) | 1996-08-23 | 1999-08-11 | Cook Biotech, Incorporated | Graft prosthesis, materials connected therewith and processes for producing thereof |
DK0936903T3 (en) | 1996-09-07 | 2004-02-09 | Guenther Beisel | Delayed action agent |
US5782914A (en) | 1996-11-29 | 1998-07-21 | Bio-Vascular, Inc. | Method for preparing heterogeneous tissue grafts |
WO1998025636A1 (en) | 1996-12-10 | 1998-06-18 | Purdue Research Foundation | Stomach submucosa derived tissue graft |
CA2274033C (en) | 1996-12-10 | 2010-05-11 | Purdue Research Foundation | Biomaterial derived from vertebrate liver tissue |
DE19739031A1 (en) * | 1997-09-05 | 1999-03-11 | Suwelack Nachf Dr Otto | Oral administration agent, its preparation and use |
US6270464B1 (en) | 1998-06-22 | 2001-08-07 | Artemis Medical, Inc. | Biopsy localization method and device |
US6008292A (en) | 1997-12-02 | 1999-12-28 | Baxter International Inc. | Method for inhibiting calcification of aldehyde-fixed bioprosthetic materials |
ATE289212T1 (en) | 1997-12-29 | 2005-03-15 | Alza Corp | VIAL FOR IMPLANT |
US20010045575A1 (en) * | 1998-05-01 | 2001-11-29 | Mark Ashby | Device and method for facilitating hemostasis of a biopsy tract |
US6056970A (en) * | 1998-05-07 | 2000-05-02 | Genzyme Corporation | Compositions comprising hemostatic compounds and bioabsorbable polymers |
US6183496B1 (en) | 1998-11-02 | 2001-02-06 | Datascope Investment Corp. | Collapsible hemostatic plug |
DK1051206T3 (en) | 1998-12-01 | 2008-11-24 | Cook Biotech Inc | A multi-shaped medical device of collagen-based biomaterial |
US6371904B1 (en) | 1998-12-24 | 2002-04-16 | Vivant Medical, Inc. | Subcutaneous cavity marking device and method |
DE60018814T2 (en) | 1999-01-21 | 2006-04-06 | Nipro Corp. | Sewable membrane for adhesion prevention |
DE20105763U1 (en) | 2001-04-02 | 2001-07-19 | Röhm GmbH, 89567 Sontheim | Drill chuck with a quick coupling |
US6605047B2 (en) | 2001-09-10 | 2003-08-12 | Vivant Medical, Inc. | Biopsy marker delivery system |
-
2002
- 2002-06-28 WO PCT/US2002/020462 patent/WO2003002168A1/en not_active Application Discontinuation
- 2002-06-28 US US10/184,559 patent/US8877233B2/en not_active Expired - Fee Related
- 2002-06-28 CA CA2452040A patent/CA2452040C/en not_active Expired - Fee Related
- 2002-06-28 AU AU2002320182A patent/AU2002320182B2/en not_active Ceased
- 2002-06-28 EP EP02749686A patent/EP1404390B1/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2452040C (en) | Porous sponge matrix medical devices and methods | |
AU2002320182A1 (en) | Porous sponge matrix medical devices and methods | |
EP2358409B1 (en) | Compressible/expandable medical graft products, and methods for applying hemostasis | |
US9788821B2 (en) | Physically modified extracellular matrix materials and uses thereof | |
US8518064B2 (en) | Method for anchoring occlusion plug | |
US20030104026A1 (en) | Processed soft tissue for topical or internal application | |
CN110665061A (en) | Acellular scaffold solution-GelMA hydrogel composite material and preparation method thereof | |
JP2002515086A (en) | Fragmented polymer hydrogels for adhesion prevention and their preparation | |
US8518104B2 (en) | Methods for occluding bodily vessels | |
US20230132953A1 (en) | Plug for lung tissue tract sealing | |
WO2009134949A1 (en) | Self deploying sis in needle | |
JPS59155248A (en) | Coating membrane and production thereof | |
JP2000262610A (en) | Artificial corium for private extraction hair foliculus transplantation designed for epidermis regeneration | |
WO2023079401A1 (en) | Plug for lung tissue tract sealing | |
CN117679552A (en) | Hemostatic sponge and preparation method and application thereof |