WO2010045702A1 - Improved trocar sealing - Google Patents

Improved trocar sealing Download PDF

Info

Publication number
WO2010045702A1
WO2010045702A1 PCT/BR2009/000355 BR2009000355W WO2010045702A1 WO 2010045702 A1 WO2010045702 A1 WO 2010045702A1 BR 2009000355 W BR2009000355 W BR 2009000355W WO 2010045702 A1 WO2010045702 A1 WO 2010045702A1
Authority
WO
WIPO (PCT)
Prior art keywords
circular opening
base
area
cylindrical body
trocar
Prior art date
Application number
PCT/BR2009/000355
Other languages
French (fr)
Inventor
Theodore Geordiadis
Original Assignee
Imbros Administração E Participações Ltda
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imbros Administração E Participações Ltda filed Critical Imbros Administração E Participações Ltda
Publication of WO2010045702A1 publication Critical patent/WO2010045702A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3498Valves therefor, e.g. flapper valves, slide valves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/06Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M39/0606Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof without means for adjusting the seal opening or pressure
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/06Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M2039/0626Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof used with other surgical instruments, e.g. endoscope, trocar
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/06Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M2039/0633Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof the seal being a passive seal made of a resilient material with or without an opening
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/06Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M2039/0633Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof the seal being a passive seal made of a resilient material with or without an opening
    • A61M2039/0646Duckbill-valve
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/06Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof

Definitions

  • the present invention is in respect of an improvement of a trocar seal. More specifically it consists of a disposable seal for the trocar produced in biocompatible silicone which has a set up which minimizes the gas flow in the escape direction and allows the introduction and removal of instruments in a smooth way. INVENTION BACKGROUND
  • Video laparoscopy surgery is carried out with the help of instruments and suitable apparatus to get abdominal cavity visualization without the necessity of large incisions and as a result less surgical trauma. Therefore this type of intervention needs the abdominal cavity to be transformed from potential to real with gas insufflation.
  • the trocars are the instruments which allow these procedures to be carried out, being equipped with seals to avoid gas escape.
  • the sealing mechanism is positioned inside the trocar housing chamber, sealing against the external surface of the inserted instruments, impeding or minimizing the exit of fluids and insufflation gases of the body cavity through the trocar cannula.
  • the prior art concept describes double sealing assemblies with a proximal seal to seal around the instrument and a duckbill seal provided below the proximal seal to seal the trocar housing when the instrument is not there.
  • Other trocars use a single seal mechanism, generally a silicone device with an opening diameter orifice less than the diameter of the instrument to be used with the trocar.
  • the present invention is related to an improvement in the sealing of a trocar which consists of a cylindrical body which includes a circular opening in one of its ends; a base at the opposite end of this circular opening, the base has on the surface an arrangement of cuts; a surrounding enlarged diameter area arranged on the cylindrical body surface contiguous to the circular opening; an area with a diameter equal to the measured diameter of the circular opening and it has concave radial contours on the internal and external surfaces, this area is between the enlarged diameter area and the base end, and semi-circular depressions on the base, these depressions are aligned with the concave radial contours and inserted between extensions aligned with the circular opening perimeter on the opposite end of the cylindrical body.
  • An invention characteristic is the improvement in trocar sealing which enables the fast and easy connecting of the trocar due to the minimum component number.
  • An invention characteristic is the improvement in trocar sealing which provides the sealing during the whole procedure minimizing escaping gas flow.
  • An invention characteristic is the improvement in trocar sealing with a biocompatible silicone material which eliminates the deformation caused by instruments passing, maintaining the material resilience and allowing the introduction of instruments with diverse diameters.
  • An invention characteristic is the improvement in trocar sealing which allows the instrument to slide through the sealing device with the minimum attrition possible, eliminating ruptures.
  • BRIEF DESCRIPTION OF THE DRAWINGS Figure 1A shows details of the sealing element positioning in the trocar chamber.
  • FIG. 2 shows details of the sealing element.
  • Figure 3 shows a perspective view of the sealing element, figure 3A is the front face and figure 3B is the rear face.
  • the trocar sealing improvement consists of a silicone sealing element to be positioned in the internal part of the trocar, with the objective of restricting gas escape during the surgical procedure through an innovative geometry which minimizes the escaping gas flow.
  • the sealing element consists of a cylindrical body which includes a circular opening (10) in one of its ends and the opposite end of this circular opening (10) having a base (11).
  • the base (11) has an arrangement of cuts on the surface (111) which allows instruments to pass through the cuts (111) which due to the material resilience guarantee the seal when there is no instrument placed in the trocar, as shown in figure 3B.
  • the cylindrical body surface is contiguous with the circular opening (10) it has a surrounding enlarged diameter area (12).
  • the concave radial contours (13) create semi-circular depressions (112) on the base surface (11 ) aligned with the concave radial contours (13), these depressions are inserted between extensions (113) aligned with the circular opening perimeter (10) on the opposite end of the cylindrical body.
  • the silicone cylindrical body has flexibility and the concave radial contours (13) maintain the structure, maintaining the original shape.
  • the sealing element (100) is positioned and fixed in the trocar chamber (200) by inserting the ring structure around the mouth with the trocar base, having a dimensional interference between the sealing element and the trocar base which provides the adjustment and the perfect fit having in mind the sealing element body to be produced in silicone which allows malleability.

Abstract

Improved trocar sealing comprising a cylindrical body that includes a circular opening (10) at one end; a base (11 ) at the opposite end to said circular opening (10), base (11 ) showing on the surface the provision of cuts (111 ), equipped with a surrounding area of enlargement in diameter (12) disposed on the surface of the cylindrical body adjacent to the circular opening (10), an area with a diameter as the diameter of the circular opening (10) and endowed ray- shaped hollow (13) in internal and external surface, said area disposed between the area of enlargement in diameter (12) and endowed with the basic end (11 ), and semi-circular indentations (112) arranged on the base (11), said indentations (112) aligned with the concave-ray (13) and interspersed with extensions (113) aligned with the perimeter of the circular opening (10) disposed at the opposite end of the cylindrical body.

Description

IMPROVED TROCAR SEALING
The present invention is in respect of an improvement of a trocar seal. More specifically it consists of a disposable seal for the trocar produced in biocompatible silicone which has a set up which minimizes the gas flow in the escape direction and allows the introduction and removal of instruments in a smooth way. INVENTION BACKGROUND
Video laparoscopy surgery is carried out with the help of instruments and suitable apparatus to get abdominal cavity visualization without the necessity of large incisions and as a result less surgical trauma. Therefore this type of intervention needs the abdominal cavity to be transformed from potential to real with gas insufflation.
In the case of intra-abdominal procedures, the use of the instrument is indispensible. In this way it is necessary that the forceps get access to the peritoneal cavity, without gas escaping from the operative field.
The trocars are the instruments which allow these procedures to be carried out, being equipped with seals to avoid gas escape. The sealing mechanism is positioned inside the trocar housing chamber, sealing against the external surface of the inserted instruments, impeding or minimizing the exit of fluids and insufflation gases of the body cavity through the trocar cannula.
The prior art concept describes double sealing assemblies with a proximal seal to seal around the instrument and a duckbill seal provided below the proximal seal to seal the trocar housing when the instrument is not there. Other trocars use a single seal mechanism, generally a silicone device with an opening diameter orifice less than the diameter of the instrument to be used with the trocar.
However, these trocar seals have the inconvenience of being difficult to assemble in the trocar because of the countless constituent components of the sealing device. Also the devices have a fragile resistant sealing point which can be broken due to instrument attrition.
Therefore, there is a need to provide a trocar sealing device which maintains the pneumoperitoneum during the whole procedure, including introducing and removing instruments providing a minimum attrition with the instruments, such an improvement in a trocar sealing device is described and claimed in this present application. SUMMARY
Generally, the present invention is related to an improvement in the sealing of a trocar which consists of a cylindrical body which includes a circular opening in one of its ends; a base at the opposite end of this circular opening, the base has on the surface an arrangement of cuts; a surrounding enlarged diameter area arranged on the cylindrical body surface contiguous to the circular opening; an area with a diameter equal to the measured diameter of the circular opening and it has concave radial contours on the internal and external surfaces, this area is between the enlarged diameter area and the base end, and semi-circular depressions on the base, these depressions are aligned with the concave radial contours and inserted between extensions aligned with the circular opening perimeter on the opposite end of the cylindrical body. An invention characteristic is the improvement in trocar sealing which enables the fast and easy connecting of the trocar due to the minimum component number.
An invention characteristic is the improvement in trocar sealing which provides the sealing during the whole procedure minimizing escaping gas flow.
An invention characteristic is the improvement in trocar sealing with a biocompatible silicone material which eliminates the deformation caused by instruments passing, maintaining the material resilience and allowing the introduction of instruments with diverse diameters.
An invention characteristic is the improvement in trocar sealing which allows the instrument to slide through the sealing device with the minimum attrition possible, eliminating ruptures. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1A shows details of the sealing element positioning in the trocar chamber.
Figure 2 shows details of the sealing element.
Figure 3 shows a perspective view of the sealing element, figure 3A is the front face and figure 3B is the rear face. DETAILED DESCRIPTION OF THE INVENTION
The trocar sealing improvement, the objective of this invention, consists of a silicone sealing element to be positioned in the internal part of the trocar, with the objective of restricting gas escape during the surgical procedure through an innovative geometry which minimizes the escaping gas flow.
The sealing element consists of a cylindrical body which includes a circular opening (10) in one of its ends and the opposite end of this circular opening (10) having a base (11). The base (11) has an arrangement of cuts on the surface (111) which allows instruments to pass through the cuts (111) which due to the material resilience guarantee the seal when there is no instrument placed in the trocar, as shown in figure 3B. The cylindrical body surface is contiguous with the circular opening (10) it has a surrounding enlarged diameter area (12).
Between the enlarged diameter area (12) and the base end (11) is arranged an area with a diameter equal to the circular opening diameter measurement (10), in this area are concave radial contours (13) on the internal and external surface, these concave radial contours (13) are intercalated and at equal distance.
The concave radial contours (13) create semi-circular depressions (112) on the base surface (11 ) aligned with the concave radial contours (13), these depressions are inserted between extensions (113) aligned with the circular opening perimeter (10) on the opposite end of the cylindrical body.
The silicone cylindrical body has flexibility and the concave radial contours (13) maintain the structure, maintaining the original shape.
As shown in figure 1 , the sealing element (100) is positioned and fixed in the trocar chamber (200) by inserting the ring structure around the mouth with the trocar base, having a dimensional interference between the sealing element and the trocar base which provides the adjustment and the perfect fit having in mind the sealing element body to be produced in silicone which allows malleability.

Claims

CLAIMS:
1. TROCAR SEALING IMPROVEMENT, characterized by consisting of a cylindrical body which includes: a) a circular opening (10) in one of its ends; b) a base (11 ) at the opposite end of this circular opening (10), the base (11 ) having cuts on the surface (111); c) a surrounding enlarged diameter area (12) on the cylindrical body surface contiguous with the circular opening (10); d) an area with a diameter equal to the circular opening diameter measurement (10) and having concave radial contours (13) on the internal and external surface, this area is between the enlarged diameter area (12) and the base end (11); e) semi-circular depressions (112) on the base (11), these depressions (112) are aligned with the concave radial contours (13) and intercalated with extensions (113) aligned with the circular opening perimeter (10) at the opposite end of the cylindrical body.
2. TROCAR SEALING IMPROVEMENT, in accordance with the claim 1, characterized by the fact that the concave radial contours (13) are intercalated and of equal distances.
PCT/BR2009/000355 2008-10-20 2009-10-20 Improved trocar sealing WO2010045702A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0805749A BRPI0805749B8 (en) 2008-10-20 2008-10-20 improvement in trocar sealing
BRPI0805749-4 2008-10-20

Publications (1)

Publication Number Publication Date
WO2010045702A1 true WO2010045702A1 (en) 2010-04-29

Family

ID=42118865

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2009/000355 WO2010045702A1 (en) 2008-10-20 2009-10-20 Improved trocar sealing

Country Status (2)

Country Link
BR (1) BRPI0805749B8 (en)
WO (1) WO2010045702A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011088337A1 (en) 2011-12-13 2013-06-13 Karl Storz Gmbh & Co. Kg Sealing device for sealing a passage for a medical instrument
DE102011088336A1 (en) 2011-12-13 2013-06-13 Karl Storz Gmbh & Co. Kg Sealing device for sealing passage of trocar that is introduced into peritoneal cavity of patient, has bar at circumferential wall section arranged partly toward of one edge to another edge of elastic circumferential wall section
DE202013100459U1 (en) 2013-02-01 2014-05-05 Karl Storz Gmbh & Co.Kg Sealing device for sealing a passage for a medical instrument
EP2762094A1 (en) 2013-02-01 2014-08-06 Karl Storz GmbH & Co. KG Sealing device for sealing a feedthrough for a medical instrument
US10028731B2 (en) 2013-11-12 2018-07-24 Genzyme Corporation Barrier application device
US20180214178A1 (en) * 2015-07-29 2018-08-02 Ab Medica Holding S.P.A. Trocar structure for abdominal surgery

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0630660A1 (en) * 1993-06-16 1994-12-28 United States Surgical Corporation Seal assembly for accomodating introduction of surgical instruments
US5401248A (en) * 1994-02-22 1995-03-28 Ethicon Endo-Surgery Seal for trocar assembly
US5662615A (en) * 1995-09-01 1997-09-02 Blake, Iii; Joseph W. Valve and valve cartridge for trocar
US20080051739A1 (en) * 2006-08-25 2008-02-28 Mcfarlane Richard H Caged floating seal assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0630660A1 (en) * 1993-06-16 1994-12-28 United States Surgical Corporation Seal assembly for accomodating introduction of surgical instruments
US5401248A (en) * 1994-02-22 1995-03-28 Ethicon Endo-Surgery Seal for trocar assembly
US5662615A (en) * 1995-09-01 1997-09-02 Blake, Iii; Joseph W. Valve and valve cartridge for trocar
US20080051739A1 (en) * 2006-08-25 2008-02-28 Mcfarlane Richard H Caged floating seal assembly

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011088337A1 (en) 2011-12-13 2013-06-13 Karl Storz Gmbh & Co. Kg Sealing device for sealing a passage for a medical instrument
DE102011088336A1 (en) 2011-12-13 2013-06-13 Karl Storz Gmbh & Co. Kg Sealing device for sealing passage of trocar that is introduced into peritoneal cavity of patient, has bar at circumferential wall section arranged partly toward of one edge to another edge of elastic circumferential wall section
EP2604203A1 (en) 2011-12-13 2013-06-19 Karl Storz GmbH & Co. KG Sealing device for sealing a feedthrough for a medical instrument
US9398923B2 (en) 2011-12-13 2016-07-26 Karl Storz Gmbh & Co. Kg Sealing means for the sealing of an introduction facility for a medical instrument
DE202013100459U1 (en) 2013-02-01 2014-05-05 Karl Storz Gmbh & Co.Kg Sealing device for sealing a passage for a medical instrument
EP2762094A1 (en) 2013-02-01 2014-08-06 Karl Storz GmbH & Co. KG Sealing device for sealing a feedthrough for a medical instrument
DE102013101019A1 (en) 2013-02-01 2014-08-07 Karl Storz Gmbh & Co. Kg Sealing device for sealing a passage for a medical instrument
US9622776B2 (en) 2013-02-01 2017-04-18 Karl Storz Gmbh & Co. Kg Sealing device for sealing a passage for a medical instrument
US10028731B2 (en) 2013-11-12 2018-07-24 Genzyme Corporation Barrier application device
US20180214178A1 (en) * 2015-07-29 2018-08-02 Ab Medica Holding S.P.A. Trocar structure for abdominal surgery
US10646253B2 (en) * 2015-07-29 2020-05-12 Ab Medica S.P.A. Trocar structure for abdominal surgery

Also Published As

Publication number Publication date
BRPI0805749A2 (en) 2010-08-24
BRPI0805749B8 (en) 2021-06-22
BRPI0805749B1 (en) 2020-11-10

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