Valve arrangement for surgical instruments and valve cage for accommodating the valve arrangement
First Claim
1. A trocar comprising a trocar sleeve with a valve cage coupled to an access end of the trocar sleeve;
- wherein the valve cage comprises a valve arrangement for surgical instruments disposed inside the valve cage that allows an inserted surgical instrument to pass through, the valve arrangement having a valve body of closed-cell, gas-tight foamed material with an upper surface and a bottom surface, the valve body further incorporating at least one slit lying in a plane and penetrating the valve body for inserting a surgical instrument, wherein the valve body receives the surgical instrument at the upper surface prior to inserting the surgical instrument and the surgical instrument passes through the bottom surface when the surgical instrument is inserted, characterized in that the upper surface of the valve body incorporates a beveled cutout that tapers towards the plane of the slit and guides the surgical instrument towards the slit for inserting the surgical instrument;
wherein the valve body has a ring shaped hollow space with an outer circumference and an inner circumference, wherein the ring shaped hollow space is disposed beneath the portion of the valve body comprising the beveled cutout and above the bottom surface, wherein the outer circumference of the ring shaped hollow space is formed by the valve body, wherein a portion of the slit is surrounded by the ring shaped hollow space and extends into the ring shaped hollow space in the direction of the bottom surface prior to the insertion of the surgical instrument, wherein a portion of the beveled cutout is circumferentially surrounded by the ring shaped hollow space.
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Accused Products
Abstract
The invention relates to a valve arrangement for surgical instruments, particularly trocars, such as those used for minimally invasive operations, e.g. operations involving laparoscopic techniques. The invention also relates to a valve cage for accommodating the valve arrangement. The valve arrangement comprises a valve body made of closed-cell, gas-tight foam material having at least one slot, which passes through the valve body and which is provided for introducing a surgical instrument guided inside the trocar. The valve cage is provided in the form of a housing whose shape and size are adapted to the outer dimensions of the valve body. The housing can be joined to a conventional trocar sleeve in a sealed and detachable manner.
32 Citations
17 Claims
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1. A trocar comprising a trocar sleeve with a valve cage coupled to an access end of the trocar sleeve;
- wherein the valve cage comprises a valve arrangement for surgical instruments disposed inside the valve cage that allows an inserted surgical instrument to pass through, the valve arrangement having a valve body of closed-cell, gas-tight foamed material with an upper surface and a bottom surface, the valve body further incorporating at least one slit lying in a plane and penetrating the valve body for inserting a surgical instrument, wherein the valve body receives the surgical instrument at the upper surface prior to inserting the surgical instrument and the surgical instrument passes through the bottom surface when the surgical instrument is inserted, characterized in that the upper surface of the valve body incorporates a beveled cutout that tapers towards the plane of the slit and guides the surgical instrument towards the slit for inserting the surgical instrument;
wherein the valve body has a ring shaped hollow space with an outer circumference and an inner circumference, wherein the ring shaped hollow space is disposed beneath the portion of the valve body comprising the beveled cutout and above the bottom surface, wherein the outer circumference of the ring shaped hollow space is formed by the valve body, wherein a portion of the slit is surrounded by the ring shaped hollow space and extends into the ring shaped hollow space in the direction of the bottom surface prior to the insertion of the surgical instrument, wherein a portion of the beveled cutout is circumferentially surrounded by the ring shaped hollow space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- wherein the valve cage comprises a valve arrangement for surgical instruments disposed inside the valve cage that allows an inserted surgical instrument to pass through, the valve arrangement having a valve body of closed-cell, gas-tight foamed material with an upper surface and a bottom surface, the valve body further incorporating at least one slit lying in a plane and penetrating the valve body for inserting a surgical instrument, wherein the valve body receives the surgical instrument at the upper surface prior to inserting the surgical instrument and the surgical instrument passes through the bottom surface when the surgical instrument is inserted, characterized in that the upper surface of the valve body incorporates a beveled cutout that tapers towards the plane of the slit and guides the surgical instrument towards the slit for inserting the surgical instrument;
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16. A valve arrangement for surgical instruments, having a valve body of closed-cell, gas-tight foamed material with an upper surface and a bottom surface, the valve body further incorporating at least one slit lying in a plane and penetrating the valve body for inserting a surgical instrument, wherein the valve body receives the surgical instrument at the upper surface prior to inserting the surgical instrument and the surgical instrument passes through the bottom surface when the surgical instrument is inserted, characterized in that the upper surface of the valve body incorporates a beveled cutout that tapers towards the plane of the slit and guides the surgical instrument towards the slit for inserting the surgical instrument;
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wherein the valve body has a ring shaped hollow space with an outer circumference and an inner circumference, wherein the ring shaped hollow space is disposed beneath the portion of the valve body comprising the beveled cutout and above the bottom surface, wherein the outer circumference of the ring shaped hollow space is formed by the valve body, wherein a portion of the slit is surrounded by the ring shaped hollow space and extends into the ring shaped hollow space in the direction of the bottom surface prior to the insertion of the surgical instrument, wherein a portion of the beveled cutout is circumferentially surrounded by the ring shaped hollow space; wherein a surface of the cutout is provided at least partly with a protective coating that is a smooth and harder coating compared to the valve body.
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17. A valve arrangement for surgical instruments, having a valve body of closed-cell, gas-tight foamed material with an upper surface and a bottom surface, the valve body further incorporating at least one slit lying in a plane and penetrating the valve body for inserting a surgical instrument, wherein the valve body receives the surgical instrument at the upper surface prior to inserting the surgical instrument and the surgical instrument passes through the bottom surface when the surgical instrument is inserted, characterized in that the upper surface of the valve body incorporates a beveled cutout that tapers towards the plane of the slit and guides the surgical instrument towards the slit for inserting the surgical instrument;
wherein the valve body has a ring shaped hollow space with an outer circumference and an inner circumference, wherein the ring shaped hollow space is disposed beneath the portion of the valve body comprising the beveled cutout and above the bottom surface, wherein the outer circumference of the ring shaped hollow space is formed by the valve body, wherein a portion of the slit is surrounded by the ring shaped hollow space and extends into the ring shaped hollow space in the direction of the bottom surface prior to the insertion of the surgical instrument, wherein a portion of the beveled cutout is circumferentially surrounded by the ring shaped hollow space.
Specification