WO2009010076A1 - Trocart présentant deux surfaces distales convexes - Google Patents
Trocart présentant deux surfaces distales convexes Download PDFInfo
- Publication number
- WO2009010076A1 WO2009010076A1 PCT/EP2007/006252 EP2007006252W WO2009010076A1 WO 2009010076 A1 WO2009010076 A1 WO 2009010076A1 EP 2007006252 W EP2007006252 W EP 2007006252W WO 2009010076 A1 WO2009010076 A1 WO 2009010076A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- distal
- trocar
- ridge
- cylindrical section
- convex surfaces
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/0084—Material properties low friction
- A61B2017/00849—Material properties low friction with respect to tissue, e.g. hollow organs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
- A61B17/06066—Needles, e.g. needle tip configurations
- A61B2017/06071—Needles, e.g. needle tip configurations with an abrupt angle formed between two adjacent sections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
Definitions
- the present invention relates to a trocar which is designed to penetrate e.g. an abdominal wall
- Disposable trocars are used together with tubular sheath at present as devices that guide medical instrument into a patient.
- U.S. Patent 5, 314, 417 discloses a needle unit and a tubular sheath, wherein the trocar is pointed at its distal end and can penetrate an abdominal wall.
- a fracture may be supplied with e.g. a nail or screws securing a plate.
- tubular sheaths are used here.
- a needle unit the so-called trocar, is used with an outer diameter equal to the inner diameter of the said tubular sheath.
- a trocar that is designed such that it slides more easily through human tissue and may be restrict the tissue harm to an unavoidable minimum.
- a trocar comprises an elongated cylindrical section with a radius R and a distal part adjacent to the cylindrical section.
- the distal part comprises two convex surfaces.
- the two convex surfaces are sy mmetrical to each other with respect to an axis of the trocar.
- the distal part further comprises two curved ridges. Each curved ridge is defined by one of the two convex surfaces and the adjacent cylindrical section. Two endpoints of each lateral curved ridge spanning a chord at a distal end of the distal part.
- the distal part further comprises a rounded distal ridge at the distal end, the distal ridge is defined by the two convex surfaces. The length of each chord and the length of the distal ridge is equal to the radius R of the cylindrical section.
- the trocar has a flattened blade-shaped tip to better penetrate tissue.
- the two convex surfaces defining an acute apex angle which complies with a bevel angle of a sheath used with the trocar.
- distal can be interpreted such that distal means away from a surgeon during an operation.
- the convex surfaces have a radius of curvature in a range between 2 mm and 12 mm, preferably between 4 mm and 8 mm, more preferably between 5 mm and 7 mm.
- the radius R of the cylindrical section is in a range between 1,5 mm and 5 mm, preferably between 2,5 mm and 3,5 mm.
- the distal ridge has a radius of curvature of about 3 mm at most, preferably in a range between 0,05 mm and 0,4 mm.
- the elongated cylindrical section has a length in a range between 40 mm and 180 mm, preferably between 110 mm and 140 mm.
- the distal part has a length in a range between 4 mm and 30 mm.
- the two convex surfaces defining an acute apex angle ( ⁇ ) with a range from 20° to 60°, preferably from 25° to 40°.
- Fig. 1 shows a schematic side view of a trocar according to an embodiment of the present invention.
- Fig. 2 shows a further side view onto the distal extremit of the trocar according to Fig. 1.
- Fig. 3 to Fig. 7 show different perspective views of the trocar.
- Fig. 1 and Fig. 2 show a trocar 1 with a an elongated cylindrical section 2 with 137,1 mm length and a radius R of 2,95 mm, and a distal part 3 with a axial length of 10,4 mm adjacent to the cylindrical section 2.
- the distal part 3 comprises two convex surfaces 4a, 4b.
- the two convex surfaces 4a, 4b are symmetrical to each other with respect to an axis 5 of the trocar 1.
- the distal part 3 further comprises two curved ridges 6a, 6b.
- Each curved ridge 6a, 6b is defined by one of the two convex surfaces 4a, 4b and the adjacent cylindrical section 2.
- Two endpoints 7a, 8a, 7b, 8b of each lateral curved ridge 6a, 6b geometrically span a chord 9a, 9b at a distal end 10 of the distal part 3.
- the distal part 3 further comprises a rounded distal ridge 11 at the distal end 10, the distal ridge is defined by the two convex surfaces 4a, 4b each has a radius of curvature of 6 mm. Further, two endpoints of the distal ridge 11 geometrically span a chord 9c at a distal end 10 of the distal part 3. Further, the two convex surfaces 4a, 4b define an acute apex angle ( ⁇ ) of 30°.
- the distal ridge has a radius of curvature of 0,2 mm.
- the length of the said three chords is equal to the radius R of the cylindrical section 2. In this embodiment the chords of the lateral curved ridges and the distal ridge, and the associated end points are in line with each other.
- Figs. 3 to 7 show a trocar in different perspectives.
- Fig. 6 shows a sheath with an inner diameter of 5,9 mm.
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
L'invention porte sur un trocart (1) comprenant une section cylindrique allongée (2) ayant un rayon R et une partie distale (3) adjacente à la section cylindrique. La partie distale comprend deux surfaces convexes (4a, 4b), les deux surfaces convexes étant symétriques l'une par rapport à l'autre par rapport à un axe (5) du trocart. La partie distale comprend en outre deux arêtes incurvées (6a, 6b), chaque arête incurvée étant définie par l'une des deux surfaces convexes et la section cylindrique adjacente. Entre deux points d'extrémité (7a, 8a, 7b, 8b) de chaque arête incurvée latérale s'étend sur une corde (9a, 9b) à une extrémité distale de la partie distale. La partie distale comprend en outre une arête distale arrondie (11) à l'extrémité distale, l'arête arrondie étant définie par les deux surfaces convexes. Entre deux points d'extrémité de l'arête distale s'étend sur une corde (9b) à l'extrémité distale de la partie distale, et la longueur de chacune desdites cordes est égale au rayon R de la section cylindrique.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2007/006252 WO2009010076A1 (fr) | 2007-07-13 | 2007-07-13 | Trocart présentant deux surfaces distales convexes |
DE202008009288U DE202008009288U1 (de) | 2007-07-13 | 2008-07-10 | Trokar mit Körnerspitze |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2007/006252 WO2009010076A1 (fr) | 2007-07-13 | 2007-07-13 | Trocart présentant deux surfaces distales convexes |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009010076A1 true WO2009010076A1 (fr) | 2009-01-22 |
WO2009010076A8 WO2009010076A8 (fr) | 2009-03-26 |
Family
ID=39166320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/006252 WO2009010076A1 (fr) | 2007-07-13 | 2007-07-13 | Trocart présentant deux surfaces distales convexes |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE202008009288U1 (fr) |
WO (1) | WO2009010076A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210212722A1 (en) * | 2020-01-10 | 2021-07-15 | Aok Innovations, Llc | Chest tube insertion device |
US11963692B2 (en) | 2021-04-30 | 2024-04-23 | Aok Innovations, Llc | Body cavity access device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB205105A (en) * | 1922-10-06 | 1924-10-16 | Louis Marie Clement Charnaux | Improvements in bougies, catheters, sounds and the like used in medicine and surgery |
US20020013597A1 (en) * | 2000-05-16 | 2002-01-31 | Mcfarlane Richard H. | Penetrating tip for trocar assembly |
WO2003026512A1 (fr) * | 2001-09-24 | 2003-04-03 | Applied Medical Resources Corporation | Obturateur sans lame |
WO2004032770A2 (fr) * | 2002-10-04 | 2004-04-22 | Conmed Corporation | Systeme de trocart |
US20050251190A1 (en) * | 2000-05-16 | 2005-11-10 | Mcfarlane Richard H | Penetrating tip for trocar assembly |
EP1712196A2 (fr) * | 2005-04-12 | 2006-10-18 | Tyco Healthcare Group Lp | Trocart avec optique et ensemble de fixation pour un instrument |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5314417A (en) | 1992-12-22 | 1994-05-24 | Ethicon, Inc. | Safety trocar |
CA2184958A1 (fr) * | 1995-09-22 | 1997-03-23 | John S. Gentelia | Trocart-canule amelioree |
DE20318220U1 (de) * | 2003-02-01 | 2004-02-12 | Fresenius Kabi Deutschland Gmbh | Vorrichtung für die Punktion von Hohlorganen und Anordnung mit einer Kanüle und einem Führungsdraht sowie einer derartigen Vorrichtung |
-
2007
- 2007-07-13 WO PCT/EP2007/006252 patent/WO2009010076A1/fr active Application Filing
-
2008
- 2008-07-10 DE DE202008009288U patent/DE202008009288U1/de not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB205105A (en) * | 1922-10-06 | 1924-10-16 | Louis Marie Clement Charnaux | Improvements in bougies, catheters, sounds and the like used in medicine and surgery |
US20020013597A1 (en) * | 2000-05-16 | 2002-01-31 | Mcfarlane Richard H. | Penetrating tip for trocar assembly |
US20050251190A1 (en) * | 2000-05-16 | 2005-11-10 | Mcfarlane Richard H | Penetrating tip for trocar assembly |
WO2003026512A1 (fr) * | 2001-09-24 | 2003-04-03 | Applied Medical Resources Corporation | Obturateur sans lame |
WO2004032770A2 (fr) * | 2002-10-04 | 2004-04-22 | Conmed Corporation | Systeme de trocart |
EP1712196A2 (fr) * | 2005-04-12 | 2006-10-18 | Tyco Healthcare Group Lp | Trocart avec optique et ensemble de fixation pour un instrument |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210212722A1 (en) * | 2020-01-10 | 2021-07-15 | Aok Innovations, Llc | Chest tube insertion device |
US11963692B2 (en) | 2021-04-30 | 2024-04-23 | Aok Innovations, Llc | Body cavity access device |
Also Published As
Publication number | Publication date |
---|---|
DE202008009288U1 (de) | 2009-01-02 |
WO2009010076A8 (fr) | 2009-03-26 |
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