WO1995007666A1 - Curved prosthetic mesh and method of manufacture - Google Patents
Curved prosthetic mesh and method of manufacture Download PDFInfo
- Publication number
- WO1995007666A1 WO1995007666A1 PCT/US1994/010297 US9410297W WO9507666A1 WO 1995007666 A1 WO1995007666 A1 WO 1995007666A1 US 9410297 W US9410297 W US 9410297W WO 9507666 A1 WO9507666 A1 WO 9507666A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mesh
- mesh according
- curved
- template
- margins
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/0063—Implantable repair or support meshes, e.g. hernia meshes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/0095—Packages or dispensers for prostheses or other implants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
- Y10S425/048—Sheet clamping
Definitions
- the present invention relates to prosthetic meshes and their methods of manufacture.
- the prior art includes a prosthetic mesh made of an implantable, non-resorbable, flexible material, designed to be implanted for the parietal repair of hernias and eventrations of the abdominal wall.
- These meshes which are usually made of implantable polypropylene, preferably have tight mesh openings and are obtained by knitting, welding or weaving. They are supplied to surgeons pre-cut, in the form of a flat element. However, this flat element must be applied to a concave surface by the surgeon. As a result of the difference in conformation, the mesh is difficult to put into position, especially since one of its relatively broad margins has to be slipped between the parietal peritoneium and the abdominopelvic wall.
- the invention palliates these disadvantages by means of a mesh which is easier to put in place and which, once in position, has virtually no tendency to shift, without the need for any additional intervention such as fixation, thereby making it possible to reinforce all the weak points of the inguinofemoral region, resulting in a much lower failure rate than heretofore.
- the mesh assumes a curved shape of itself.
- the mesh conforms to the anatomic shapes, and it has no tendency to shift because it is not subjected to strain due to its deformation.
- the mesh while being capable of the temporary deformation necessary for it to be put in place, should have a sufficient tendency to resume its initial curved shape, without deviating therefrom, so that it does not fold or wrinkle under the pressure of the viscera.
- the preferred mesh resumes its approximate original shape after a single temporary deformation.
- the margins of the mesh are more rigid than the rest of the mesh, for example by fusing of the material marginally over a width of at least 5 mm.
- the margins are preferably smooth, to keep the mesh from catching as it is being positioned.
- the mesh have, not an external side, but a roughly tapered end by which it can be slipped more easily between the parietal peritoneum and the abdominopelvic wall. It is also preferred that its inner margin, the farthest from that end, be incurvated, especially in its outer portion, roughly according to a circle permitting the repositioning of the bladder after the mesh has been put in place.
- the mesh can have a double convexity in two perpendicular planes.
- this mesh is composed of a part in the form of a spherical cap extending from the inner margin to beyond the location where the strongest reinforcement is desired, prolonged by a conical part which, at its end, defines the outer tip.
- the radius of the spherical part can be between 80 and 120 mm.
- the largest dimension of the mesh can be between 120 and 150 mm, while the dimension perpendicular to this largest dimension can be between 70 and 100 mm.
- a rounded edge is provided between the spherical cap and the cone on one hand, and a lower part with a large radius of curvature, which has a depression near its center. This depression is designed to be placed opposite the external iliac vessels, while the rounded edge is designed to be placed within the axis of the inguinal ligament.
- a further object of the invention is a method of manufacture of a mesh according to the invention, which consists in placing a flat piece of an implantable, non-resorbable, flexible material in a curved template and bringing this piece to a sufficient temperature for a sufficient period of time so that it retains a curved shape, even after cooling, and upon removal from the template.
- a final object of the invention is a package for a mesh, which comprises a body in which a cover nests, characterized in that the upper surface of the bottom of the body is derived from a template which, together with a concave part of the same shape provided on the lower surface of the cover, defines a receptacle for the curved mesh.
- Figure 1 is a plan view of the mesh according to the invention.
- Figure 2 is a perspective view, partially cut away, of the mesh according to the invention.
- Figure 3 is an exploded view depicting the method of manufacture of the mesh according to the invention.
- Figure 4 depicts a package for the mesh.
- the mesh according to the invention is made of knitted polypropylene (Marlex) cloth; for purposes of clarity, the mesh openings are shown in the drawing as larger than they really are.
- the mesh is curved. It comprises a part 1 in the form of a spherical cap extending from the rounded inner margin 2 to beyond the location 3 where the strongest reinforcement is desired. This spherical cap 1 is prolonged by a conical part 4 which defines at its end the outer tip 5.
- the radius of spherical part 1 is 100 mm, the largest dimension of the mesh from margin 2 to the tip 5 is 130 mm, while the dimension perpendicular to this largest dimension is 85 mm.
- a lower part 6 is connected both to the spherical cap 1 and to the cone 4 by a rounded edge 7, and a depression 8 is provided beginning at the bottom margin 9 of the lower part, near the median portion.
- All the margins of the mesh are smooth and are made more rigid than the rest by fusing the material marginally over a width of 3 mm.
- a template consists of a supporting base 10, from the surface of which is derived a template per se 11 in the shape of the mesh to be obtained, and an aluminum frame 12 designed to clamp the margins of a flat piece of mesh 13 when it is placed on the template 11 after the retaining tabs 16 have been folded down.
- a silicone frame 14 with a form similar to the template 11 recessed into its inner surface can then be placed on the mesh 13 and held there by an aluminum cover plate 15. Once the flat piece 13 of mesh has been secured in this fashion, it is heated in the template to a temperature of 150°C for one hour. The template is cooled and the mesh, now curved, is removed.
- Figure 4 depicts a package for the curved mesh.
- This package consists of a body 17, the upper surface of whose bottom is inwardly convex in the shape of the mesh which it is to hold, and a cover 18 which is inwardly concave in this same shape.
- a cover 18 which is inwardly concave in this same shape.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69431730T DE69431730T2 (en) | 1993-09-13 | 1994-09-13 | CURVED, PROSTHETIC NET, AND METHOD FOR PRODUCING IT |
EP94929187A EP0746267B1 (en) | 1993-09-13 | 1994-09-13 | Curved prosthetic mesh and method of manufacture |
US09/346,791 US6368541B1 (en) | 1993-09-13 | 1999-07-02 | Method of manufacturing a curved prosthetic mesh |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR93/10857 | 1993-09-13 | ||
FR9310857A FR2709947B1 (en) | 1993-09-13 | 1993-09-13 | Curved prosthetic mesh and its manufacturing process. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995007666A1 true WO1995007666A1 (en) | 1995-03-23 |
Family
ID=9450788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1994/010297 WO1995007666A1 (en) | 1993-09-13 | 1994-09-13 | Curved prosthetic mesh and method of manufacture |
Country Status (6)
Country | Link |
---|---|
US (2) | US5954767A (en) |
EP (1) | EP0746267B1 (en) |
DE (1) | DE69431730T2 (en) |
ES (1) | ES2186692T3 (en) |
FR (1) | FR2709947B1 (en) |
WO (1) | WO1995007666A1 (en) |
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FR2735015A1 (en) * | 1995-06-12 | 1996-12-13 | Microval | INTERNAL PROSTHESIS IN THE FORM OF A TEXTILE OR OTHER SUPPORT AND ITS COELIOSCOPIC INSERTION DEVICE |
FR2783155A1 (en) * | 1998-09-11 | 2000-03-17 | Bard Corporate | Prosthetic harness for external iliac vessels has domed panel and lower cap sections with similar radii of curvature |
FR2783156A1 (en) * | 1998-09-11 | 2000-03-17 | Bard Corporate | Prosthetic harness for external iliac vessels |
US6113641A (en) * | 1997-08-27 | 2000-09-05 | Ethicon, Inc. | Prosthesis for the obturation of a hernial canal |
US6180848B1 (en) | 1997-08-27 | 2001-01-30 | Ethicon, Inc. | Prosthesis obturating device for the obturation of a hernial canal |
US6241768B1 (en) | 1997-08-27 | 2001-06-05 | Ethicon, Inc. | Prosthetic device for the repair of a hernia |
FR2807936A1 (en) | 2000-04-20 | 2001-10-26 | Sofradim Production | ABDOMINAL WALL REINFORCEMENT FOR THE TREATMENT OF INGUINAL HERNIA BY ANTERIOR VOLTAGE-FREE |
FR2807937A1 (en) | 2000-04-20 | 2001-10-26 | Sofradim Production | Self-gripping prosthesis of knitted fabric for parietal reinforcement has outer monofilament layer with loops broken by fusion to make spikes |
US6610006B1 (en) | 2000-07-25 | 2003-08-26 | C. R. Bard, Inc. | Implantable prosthesis |
US6712859B2 (en) | 2001-06-28 | 2004-03-30 | Ethicon, Inc. | Hernia repair prosthesis and methods for making same |
US6723133B1 (en) | 1998-09-11 | 2004-04-20 | C. R. Bard, Inc. | Performed curved prosthesis having a reduced incidence of developing wrinkles or folds |
US6740122B1 (en) | 1998-09-11 | 2004-05-25 | C. R. Bard, Inc. | Preformed curved prosthesis that is adapted to the external iliac vessels |
US6755868B2 (en) | 2002-03-22 | 2004-06-29 | Ethicon, Inc. | Hernia repair device |
US9242026B2 (en) | 2008-06-27 | 2016-01-26 | Sofradim Production | Biosynthetic implant for soft tissue repair |
US9308068B2 (en) | 2007-12-03 | 2016-04-12 | Sofradim Production | Implant for parastomal hernia |
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US9445883B2 (en) | 2011-12-29 | 2016-09-20 | Sofradim Production | Barbed prosthetic knit and hernia repair mesh made therefrom as well as process for making said prosthetic knit |
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Also Published As
Publication number | Publication date |
---|---|
FR2709947B1 (en) | 1995-11-10 |
DE69431730D1 (en) | 2002-12-19 |
US6368541B1 (en) | 2002-04-09 |
EP0746267B1 (en) | 2002-11-13 |
EP0746267A1 (en) | 1996-12-11 |
DE69431730T2 (en) | 2003-07-17 |
FR2709947A1 (en) | 1995-03-24 |
US5954767A (en) | 1999-09-21 |
ES2186692T3 (en) | 2003-05-16 |
EP0746267A4 (en) | 1997-08-27 |
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