WO2010145774A1 - Laparoscopic port with tubular section - Google Patents

Laparoscopic port with tubular section Download PDF

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Publication number
WO2010145774A1
WO2010145774A1 PCT/EP2010/003471 EP2010003471W WO2010145774A1 WO 2010145774 A1 WO2010145774 A1 WO 2010145774A1 EP 2010003471 W EP2010003471 W EP 2010003471W WO 2010145774 A1 WO2010145774 A1 WO 2010145774A1
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WO
WIPO (PCT)
Prior art keywords
port
tube
hose
tubular section
abdominal wall
Prior art date
Application number
PCT/EP2010/003471
Other languages
German (de)
French (fr)
Inventor
Jens Waldmann
Original Assignee
Olympus Winter & Ibe Gmbh
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 Olympus Winter & Ibe Gmbh filed Critical Olympus Winter & Ibe Gmbh
Publication of WO2010145774A1 publication Critical patent/WO2010145774A1/en

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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
    • A61B17/3421—Cannulas
    • A61B17/3423—Access ports, e.g. toroid shape introducers for instruments or hands
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00535—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated
    • A61B2017/00539—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated hydraulically
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00535—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated
    • A61B2017/00544—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated pneumatically
    • 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
    • A61B17/3421—Cannulas
    • A61B2017/3443—Cannulas with means for adjusting the length of a cannula
    • 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
    • A61B17/3421—Cannulas
    • A61B2017/3445—Cannulas used as instrument channel for multiple instruments
    • 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
    • A61B17/3421—Cannulas
    • A61B2017/3445—Cannulas used as instrument channel for multiple instruments
    • A61B2017/3449—Cannulas used as instrument channel for multiple instruments whereby the instrument channels merge into one single channel
    • 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
    • A61B17/3462—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
    • A61B2017/3466—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals for simultaneous sealing of multiple instruments

Definitions

  • the invention relates to a laparoscopic port according to the preamble of claim 1.
  • Laparoscopic ports of sufficient inherent rigidity are inserted into an opening of the abdominal wall after it has been elastically expanded to keep it open for insertion of instruments into the abdominal cavity.
  • the opening closing valves ensure that even with imported instruments, the opening remains gas-tight.
  • Such ports are known with narrow pipe sections of greater length, through which only a single, thin instrument can be inserted. Larger diameter ports are suitable for simultaneously inserting multiple instruments or for inserting a hand of the surgeon into the abdomen.
  • Structures such as according to EP 0 845 960 B1 with an intrinsically rigid piece of pipe, are easier to lay and keep the opening of the abdominal wall in a simple manner, but have a predetermined length.
  • a port with a piece of pipe of predetermined length optimally fits only to a stomach wall of a certain thickness. If the abdominal wall is significantly thinner, the tube piece interferes far into the abdominal wall. Is the abdominal wall essential Thick, so the length of pipe is not sufficient in length to keep the zuzuschellenden fat layers of the abdominal wall open.
  • the object of the present invention is to provide a laparoscopic port that is easy and safe to use.
  • the pipe section consists of a helically wound hose, which is adjustable by means of an insertable pressure medium in the hose cross-section. This changes the length of the pipe section formed from this hose. By changing the internal pressure of the hose, the length can be adjusted very easily. It can e.g. also be adjusted during the operation.
  • the surfaces of the construction can be relatively soft and rounded and thus form injury-resistant.
  • the tube may be formed with sufficient inherent rigidity, so that it is still cross-sectional expandable under higher pressure, but still stiffen the opening of the abdominal wall with sufficient force.
  • the hose is advantageous but reinforced according to claim 2 with a spring wire. This can give the tube substantially the stiffening effect, wherein the tube itself can be highly elastic designed to be easily extended.
  • the tube piece is tapered towards the distal end in the shape of a truncated cone. This makes it easier to insert into the body opening to be dilated.
  • FIG. 1 shows a port according to the invention in the axial section
  • Fig. 2 shows the port of Fig. 1 in the extended state, inserted into a
  • Fig. 1 shows a laparoscopic port 1, which is formed from an annular flange 2 forming the proximal end and a tube piece 3 attached thereto at its proximal end.
  • the tube piece 3 may be cylindrically shaped or, as in the illustrated preferred embodiment, frustoconical, wherein the distal end is narrower than the proximal end of the tubular piece 3 lying on the annular flange 2.
  • the pipe section 3 consists of a helically wound hose 4 with closely spaced turns.
  • the tube 4 may be shaped such that its turns are pressed together sealingly.
  • the turns can also be glued together for better grip.
  • the hose 4 is reinforced with a spring wire 5, which is arranged in the embodiment inside the hose 4, but for example, outside the wall of the hose can be attached or, for example, can be installed embedded in the wall of the hose 4.
  • At the distal end of the tube 4 is closed and extends from the proximal end as a connecting tube 6 to a device for pressure supply, not shown, which is adapted to put the interior of the tube 4 either under pressure or to reduce the internal pressure.
  • the hose 4 is formed cross-sectional widening, in particular in the direction of the axis A of the pipe section 3.
  • the hose 4 may be made of suitably elastic plastic material, while the spring wire 5, e.g. Made of suitable steel.
  • the port 1 is equipped with a closure plate 7 fastened in the annular flange 2 in the exemplary embodiment, in which two through valves 8 are arranged in the exemplary embodiment.
  • These may be formed in a manner not shown, conventional construction, e.g. with check valves, which are still well sealed even when plugged instrument.
  • There may also be larger passage means, e.g. for the whole hand, be provided, e.g. as described in US 2005/0148823 A1.
  • Fig. 1 it is shown in the direction of arrow 9 that the printing medium, e.g. Gas or liquid is withdrawn from the tube 4, so that it reduces its cross-section in the direction of the axis A, that is, the total length of the blank 3 is shortened.
  • the printing medium e.g. Gas or liquid
  • Fig. 2 shows the port 1 shown in Fig. 1 in a different length position.
  • the direction of the arrow 9 is reversed and symbolizes that now pressure in the tube 4 is given, so that this increases the cross section, in particular in the direction of the axis A, whereby the length of the pipe section 3 increases.
  • the working position of the port 1 in a stomach wall 10 is shown. Approximately at the location of the axis A, a puncture or incision is first introduced into the abdominal wall 10 and then the port 1 shown to the operating position shown in Fig. 2 introduced into the thus created opening of the abdominal wall 10.
  • abdominal wall 10 is of a thickness for which the length of the pipe section 3 in the shortened position of FIG. 1 would not be sufficient.
  • the extended position as shown in FIG. 2, but is well enough.
  • the two different length positions of the port 1 in Figures 1 and 2 show that the length of the port is adjustable and so different thickness abdominal walls 10 can be adjusted.
  • Fig. 2 also shows two instruments 11, 12 inserted in the two passage valves 8, of which e.g. one can be a forceps and the other an observation optics.
  • the tube 4 is designed as a continuous helically wound tube. This results in advantages, e.g. because the hose can be supplied with only one connection hose 6.
  • the tube may also be formed in the form of individual rings, which are glued to each other, for example, or otherwise secured.
  • each ring is self-contained and must, together with the other rings, be pressure-supplied, for which a suitable connection system, for example by means of passage connections from ring to ring, is required.
  • a suitable connection system for example by means of passage connections from ring to ring, is required.
  • the inherent rigidity of the pipe section ckes 3 are increased by a spring wire, for example, as shown in Figures 1 and 2, may be arranged inside the tube.

Abstract

The invention relates to a laparoscopic port (1) having an adjustable-length tubular section (3) that can be inserted into a widened opening in the abdominal wall (10) and that has an inherent stiffness that is sufficient to keep the opening open. The port is characterized in that the tubular section (3) comprises a helically wound, closed flexible tube (4) made of material the cross section of which can be widened, at least in the direction of the axis (A) of the tubular section (3), wherein the flexible tube (4) is connected to a source of a pressure medium.

Description

Laparoskopischer Port mit Rohrstück Laparoscopic port with tube piece
Die Erfindung betrifft einen laparoskopischen Port nach dem Oberbegriff des Anspruches 1.The invention relates to a laparoscopic port according to the preamble of claim 1.
Laparoskopische Ports ausreichender Eigensteifigkeit werden in eine Öffnung der Bauchwand eingesetzt, nachdem diese elastisch erweitert ist, um sie für das Durchführen von Instrumenten in den Bauchraum offen zu halten. Die Öffnung verschließende Ventile sorgen dafür, dass auch bei eingeführten Instrumenten die Öffnung gasdicht verschlossen bleibt.Laparoscopic ports of sufficient inherent rigidity are inserted into an opening of the abdominal wall after it has been elastically expanded to keep it open for insertion of instruments into the abdominal cavity. The opening closing valves ensure that even with imported instruments, the opening remains gas-tight.
Solche Ports sind mit engen Rohrstücken größerer Länge bekannt, durch die nur ein einzelnes, dünnes Instrument einführbar ist. Ports größeren Durchmessers sind zum gleichzeitigen Einführen mehrerer Instrumente geeignet oder zum Einführen einer Hand des Operateurs in den Bauchraum.Such ports are known with narrow pipe sections of greater length, through which only a single, thin instrument can be inserted. Larger diameter ports are suitable for simultaneously inserting multiple instruments or for inserting a hand of the surgeon into the abdomen.
Konstruktionen, wie beispielsweise gemäß EP 0 845 960 Bl mit einem eigensteifen Rohrstück, lassen sich einfacher verlegen und halten die Öffnung der Bauchwand auf einfache Weise offen, haben jedoch eine vorgegebene Länge.Structures, such as according to EP 0 845 960 B1 with an intrinsically rigid piece of pipe, are easier to lay and keep the opening of the abdominal wall in a simple manner, but have a predetermined length.
Ein Port mit einem Rohrstück vorgegebener Länge passt optimal nur zu einer Bauchwand bestimmter Dicke. Ist die Bauchwand wesentlich dünner, so steht das Rohrstück störend weit in den Bauchwand hinein. Ist die Bauchwand wesentlich dicker, so reicht das Rohrstück in seiner Länge nicht aus, um die zuquellenden Fettschichten der Bauchwand offen zu halten.A port with a piece of pipe of predetermined length optimally fits only to a stomach wall of a certain thickness. If the abdominal wall is significantly thinner, the tube piece interferes far into the abdominal wall. Is the abdominal wall essential Thick, so the length of pipe is not sufficient in length to keep the zuzuschellenden fat layers of the abdominal wall open.
Aus der DE 603 14 464 T2 ist ein gattungsgemässer Port bekannt, bei dem das Rohrstück aus einem flexiblen Schlauch besteht, der an seinen Enden innerhalb und außerhalb der Bauchwand mit Ringen versteift wird. Diese Konstruktion lässt sich leicht an unterschiedlich dicke Bauchwände anpassen, erfordert aber eine aufwendige Verlegung, um die Öffnung ausreichend offen zu halten.From DE 603 14 464 T2 a generic port is known in which the pipe section consists of a flexible hose which is stiffened at its ends inside and outside the abdominal wall with rings. This construction can be easily adapted to different thickness abdominal walls, but requires a complex installation to keep the opening sufficiently open.
Ein weiterer gattungsgemässer Port ist aus der US 5 746 720 bekannt. Dabei ist das Rohrstück mehrteilig teleskopisch ineinander verschraubbar ausgebildet und ebenfalls leicht an unterschiedlich dicke Bauchwände anpassbar. Die resultierende Konstruktion ist jedoch ebenfalls schwierig bedienbar und zudem verletzungsgefähr- dend.Another generic port is known from US 5,746,720. In this case, the pipe section is formed in several parts telescopically screwed into each other and also easily adaptable to different thickness abdominal walls. However, the resulting construction is also difficult to use and also injurious to life.
Die Aufgabe der vorliegenden Erfindung besteht darin, einen laparoskopischen Port zu schaffen, der einfach und sicher verwendbar ist.The object of the present invention is to provide a laparoscopic port that is easy and safe to use.
Diese Aufgabe wird mit den Merkmalen des Anspruches 1 gelöst.This object is achieved with the features of claim 1.
Erfindungsgemäss besteht das Rohrstück aus einem schraubenförmig gewickelten Schlauch, der mithilfe eines einführbaren Druckmediums im Schlauchquerschnitt verstellbar ist. Dadurch verändert sich die Länge des aus diesem Schlauch gebildeten Rohrstückes. Durch Veränderung des Innendruckes des Schlauches lässt sich die Länge sehr einfach einstellen. Sie kann z.B. auch während der Operation verstellt werden. Die Oberflächen der Konstruktion lassen sich relativ weich und verrundet und somit verletzungssicher ausbilden.According to the invention, the pipe section consists of a helically wound hose, which is adjustable by means of an insertable pressure medium in the hose cross-section. This changes the length of the pipe section formed from this hose. By changing the internal pressure of the hose, the length can be adjusted very easily. It can e.g. also be adjusted during the operation. The surfaces of the construction can be relatively soft and rounded and thus form injury-resistant.
Der Schlauch kann mit ausreichender Eigensteifigkeit ausgebildet sein, so dass er zwar noch unter höherem Druck querschnittserweiterbar ist, aber dennoch die Öffnung der Bauchwand mit ausreichender Kraft aussteift. Vorteilhaft ist der Schlauch jedoch gemäß Anspruch 2 mit einem Federdraht verstärkt. Dieser kann dem Schlauch im Wesentlichen die aussteifende Wirkung verleihen, wobei der Schlauch selbst hoch elastisch ausgebildet sein kann, um leicht verlängert werden zu können.The tube may be formed with sufficient inherent rigidity, so that it is still cross-sectional expandable under higher pressure, but still stiffen the opening of the abdominal wall with sufficient force. The hose is advantageous but reinforced according to claim 2 with a spring wire. This can give the tube substantially the stiffening effect, wherein the tube itself can be highly elastic designed to be easily extended.
Vorteilhaft, gemäß Anspruch 3, ist das Rohrstück zum distalen Ende hin kegel- stumpfförmig verjüngt. Dadurch lässt es sich einfacher in die aufzuweitende Körperöffnung einführen.Advantageously, according to claim 3, the tube piece is tapered towards the distal end in the shape of a truncated cone. This makes it easier to insert into the body opening to be dilated.
In den Zeichnungen ist die Erfindung beispielsweise und schematisch dargestellt. Es zeigen:In the drawings, the invention is shown for example and schematically. Show it:
Fig. 1 einen erfindungsgemäßen Port im Achsschnitt und1 shows a port according to the invention in the axial section and
Fig. 2 den Port der Fig. 1 in verlängertem Zustand, eingesetzt in eineFig. 2 shows the port of Fig. 1 in the extended state, inserted into a
Bauchwand.Abdominal wall.
Fig. 1 zeigt einen laparoskopischen Port 1 , der gebildet ist aus einem, das proximale Ende bildenden Ringflansch 2 und einem daran mit seinem proximalen Ende befestigten Rohrstück 3. Das Rohrstück 3 kann zylindrisch geformt sein oder, wie im dargestellten bevorzugten Ausführungsbeispiel, kegelstumpfförmig, wobei das distale Ende enger ist, als das am Ringflansch 2 liegende proximale Ende des Rohrstückes 3.Fig. 1 shows a laparoscopic port 1, which is formed from an annular flange 2 forming the proximal end and a tube piece 3 attached thereto at its proximal end. The tube piece 3 may be cylindrically shaped or, as in the illustrated preferred embodiment, frustoconical, wherein the distal end is narrower than the proximal end of the tubular piece 3 lying on the annular flange 2.
Das Rohrstück 3 besteht aus einem schraubenförmig gewundenen Schlauch 4 mit eng aneinander liegenden Windungen. Dabei kann der Schlauch 4 derart geformt sein, dass seine Windungen dichtend aneinander gepresst werden. Die Windungen können auch zum besseren Halt miteinander verklebt sein.The pipe section 3 consists of a helically wound hose 4 with closely spaced turns. In this case, the tube 4 may be shaped such that its turns are pressed together sealingly. The turns can also be glued together for better grip.
Im dargestellten Ausführungsbeispiel ist der Schlauch 4 mit einem Federdraht 5 verstärkt, der im Ausführungsbeispiel im Inneren des Schlauches 4 angeordnet ist, aber beispielsweise auch außen an der Wand des Schlauches befestigt sein kann oder z.B. in die Wand des Schlauches 4 eingebettet verlegt sein kann.In the illustrated embodiment, the hose 4 is reinforced with a spring wire 5, which is arranged in the embodiment inside the hose 4, but for example, outside the wall of the hose can be attached or, for example, can be installed embedded in the wall of the hose 4.
Am distalen Ende ist der Schlauch 4 verschlossen und verläuft vom proximalen Ende als Anschlussschlauch 6 zu einer nicht dargestellten Einrichtung zur Druckversorgung, die geeignet ist, das Innere des Schlauches 4 wahlweise unter Druck zu setzen oder den Innendruck zu verringern.At the distal end of the tube 4 is closed and extends from the proximal end as a connecting tube 6 to a device for pressure supply, not shown, which is adapted to put the interior of the tube 4 either under pressure or to reduce the internal pressure.
Der Schlauch 4 ist querschnittserweiterbar ausgebildet, und zwar insbesondere in Richtung der Achse A des Rohrstückes 3. Beispielsweise kann der Schlauch 4 aus geeignet elastischem Kunststoffmaterial bestehen, während der Federdraht 5 z.B. aus geeignetem Stahl besteht.The hose 4 is formed cross-sectional widening, in particular in the direction of the axis A of the pipe section 3. For example, the hose 4 may be made of suitably elastic plastic material, while the spring wire 5, e.g. Made of suitable steel.
Der Port 1 ist mit einer im Ausführungsbeispiel im Ringflansch 2 befestigten Verschlussplatte 7 ausgerüstet, in der im Ausführungsbeispiel zwei Durchgangsventile 8 angeordnet sind. Diese können in nicht dargestellter, üblicher Bauweise ausgebildet sein, z.B. mit Rückschlagventilen, die auch bei durchgestecktem Instrument noch gut abdichtend ausgebildet sind. Es können auch größere Durchgangseinrichtungen, z.B. für die ganze Hand, vorgesehen sein, z.B. so, wie in US 2005/0148823 Al beschrieben.The port 1 is equipped with a closure plate 7 fastened in the annular flange 2 in the exemplary embodiment, in which two through valves 8 are arranged in the exemplary embodiment. These may be formed in a manner not shown, conventional construction, e.g. with check valves, which are still well sealed even when plugged instrument. There may also be larger passage means, e.g. for the whole hand, be provided, e.g. as described in US 2005/0148823 A1.
In Fig. 1 ist mit der Richtung des Pfeils 9 dargestellt, dass das Druckmedium, wie z.B. Gas oder Flüssigkeit, aus dem Schlauch 4 abgezogen wird, so dass dieser seinen Querschnitt in Richtung der Achse A verringert, also die Gesamtlänge des Rohstückes 3 verkürzt ist.In Fig. 1, it is shown in the direction of arrow 9 that the printing medium, e.g. Gas or liquid is withdrawn from the tube 4, so that it reduces its cross-section in the direction of the axis A, that is, the total length of the blank 3 is shortened.
Fig. 2 zeigt den in Fig. 1 dargestellten Port 1 in anderer Längenstellung. Die Richtung des Pfeils 9 ist umgekehrt und symbolisiert, dass jetzt Druck in den Schlauch 4 gegeben wird, so dass dieser den Querschnitt, insbesondere in Richtung der Achse A, vergrößert, wodurch sich die Länge des Rohrstückes 3 vergrößert. Außerdem ist in Fig. 2 die Arbeitsstellung des Ports 1 in einer Bauchwand 10 dargestellt. Etwa an der Stelle der Achse A ist zunächst ein Einstich oder Schnitt in die Bauchwand 10 eingebracht und sodann der dargestellte Port 1 bis zur in Fig. 2 dargestellten Betriebsstellung in die so geschaffene Öffnung der Bauchwand 10 eingeführt.Fig. 2 shows the port 1 shown in Fig. 1 in a different length position. The direction of the arrow 9 is reversed and symbolizes that now pressure in the tube 4 is given, so that this increases the cross section, in particular in the direction of the axis A, whereby the length of the pipe section 3 increases. In addition, in Fig. 2, the working position of the port 1 in a stomach wall 10 is shown. Approximately at the location of the axis A, a puncture or incision is first introduced into the abdominal wall 10 and then the port 1 shown to the operating position shown in Fig. 2 introduced into the thus created opening of the abdominal wall 10.
Wie der Vergleich der Figuren 1 und 2 zeigt, ist die in Fig. 2 dargestellte Bauchwand 10 von einer Dicke, für die die Länge des Rohrstückes 3 in der verkürzten Stellung der Fig. 1 nicht ausreichen würde. Die verlängerte Stellung, gemäß Fig. 2, ist jedoch gut ausreichend. Die beiden unterschiedlichen Längenstellungen des Ports 1 in den Figuren 1 und 2 zeigen, dass die Länge des Ports verstellbar ist und so unterschiedlich dicken Bauchwänden 10 angepasst werden kann.As the comparison of Figures 1 and 2 shows, the illustrated in Fig. 2 abdominal wall 10 is of a thickness for which the length of the pipe section 3 in the shortened position of FIG. 1 would not be sufficient. The extended position, as shown in FIG. 2, but is well enough. The two different length positions of the port 1 in Figures 1 and 2 show that the length of the port is adjustable and so different thickness abdominal walls 10 can be adjusted.
Fig. 2 zeigt ferner zwei in die beiden Durchgangsventile 8 eingesteckte Instrumente 11, 12, von denen z.B. eines eine Zange und das andere eine Beobachtungsoptik sein kann.Fig. 2 also shows two instruments 11, 12 inserted in the two passage valves 8, of which e.g. one can be a forceps and the other an observation optics.
Bei der in den Figuren 1 und 2 dargestellten Ausführungsform des Ports 1 ist der Schlauch 4 als ein durchgehender, schraubenförmig gewundener Schlauch ausgebildet. Daraus ergeben sich Vorteile, z.B. weil der Schlauch mit nur einem Anschlussschlauch 6 versorgbar ist. Außerdem lässt sich der Port 1, mithilfe der Windungen des Schlauches 4, gewindeartig in die Öffnung in der Bauchwand 10 einschrauben, was die Einbringung erleichtert.In the embodiment of port 1 shown in FIGS. 1 and 2, the tube 4 is designed as a continuous helically wound tube. This results in advantages, e.g. because the hose can be supplied with only one connection hose 6. In addition, the port 1, using the turns of the tube 4, threadably screw into the opening in the abdominal wall 10, which facilitates the introduction.
In nicht dargestellter anderer Ausführungsform kann der Schlauch jedoch auch in Form einzelner Ringe ausgebildet sein, die beispielsweise aneinander verklebt oder sonstwie befestigt sind. Dabei ist jeder Ring in sich abgeschlossen und muss, zusammen mit den anderen Ringen, druckversorgt werden, wozu ein geeignetes Anschlusssystem, z.B. mittels Durchgangs Verbindungen von Ring zu Ring, erforderlich ist. Auch bei dieser Ausführungsform kann die Eigensteifigkeit des Rohrstü- ckes 3 durch einen Federdraht erhöht werden, der z.B. genauso wie in den Figuren 1 und 2 dargestellt, im Inneren des Schlauches angeordnet sein kann. In another embodiment, not shown, however, the tube may also be formed in the form of individual rings, which are glued to each other, for example, or otherwise secured. In this case, each ring is self-contained and must, together with the other rings, be pressure-supplied, for which a suitable connection system, for example by means of passage connections from ring to ring, is required. Also in this embodiment, the inherent rigidity of the pipe section ckes 3 are increased by a spring wire, for example, as shown in Figures 1 and 2, may be arranged inside the tube.

Claims

Laparoskopischer Port mit RohrstückPATENTANSPRÜCHE: Laparoscopic port with tube piecePATENTIAL CLAIMS:
1. Laparoskopischer Port (1) mit einem in eine erweiterte Öffnung der Bauchwand (10) einsetzbaren Rohrstück (3) von zum Offenhalten der Öffnung ausreichender Eigensteifigkeit, das in seiner Länge verstellbar ausgebildet ist, dadurch gekennzeichnet, dass das Rohstück (3) aus einem schraubenförmig gewickelten, geschlossenen Schlauch (4) aus wenigstens in Richtung der Achse (A) des Rohrstückes (3) querschnittserweiterbarem Material besteht, wobei der Schlauch (4) an eine Quelle eines Druckmediums angeschlossen ist.1. Laparoscopic port (1) with an in an expanded opening of the abdominal wall (10) insertable tube piece (3) of sufficient to hold the opening sufficient inherent rigidity, which is adjustable in its length, characterized in that the blank (3) from a helically wound, closed tube (4) consists of at least in the direction of the axis (A) of the pipe section (3) querschnittserweiterbarem material, wherein the hose (4) is connected to a source of a pressure medium.
2. Port nach Anspruch 1, dadurch gekennzeichnet, dass der Schlauch (4) mit einem Federdraht (5) verstärkt ist.2. Port according to claim 1, characterized in that the hose (4) is reinforced with a spring wire (5).
3. Port nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das Rohrstück (3) kegelstumpfförmig sich zum distalen Ende hin verjüngend ausgebildet ist. 3. Port according to one of claims 1 or 2, characterized in that the pipe piece (3) is frusto-conically tapering towards the distal end.
PCT/EP2010/003471 2009-06-19 2010-06-10 Laparoscopic port with tubular section WO2010145774A1 (en)

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DE102011111284A1 (en) 2011-08-26 2013-02-28 Olympus Winter & Ibe Gmbh Laparoscopic port used for passing surgical instrument into abdominal cavity, has sealing portions that are provided for blocking flow of gas stream with respect to tube section which is inserted into opening in abdominal wall

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US5746720A (en) 1995-10-18 1998-05-05 Stouder, Jr.; Albert E. Method and apparatus for insertion of a cannula and trocar
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US20050148823A1 (en) 2003-10-15 2005-07-07 Trevor Vaugh Surgical sealing device
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