Shielded septum trocar seal
First Claim
1. A trocar assembly having a channel defined along an elongate axis, the trocar assembly being adapted to receive a surgical instrument, the trocar assembly comprising:
- a septum seal disposed in the channel including a seal tip having a proximal facing surface, the seal tip including portions defining an orifice; and
a septum shield including a tubular member having a proximal end and a distal end, and a plurality of blades protruding distally from the distal end of the tubular member, the septum shield being placed inside the septum seal such that the blades engage the proximal facing surface of the seal tip.
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Accused Products
Abstract
The invention is directed to a trocar assembly having a channel defined along an elongate axis, the trocar assembly being adapted to receive a surgical instrument, the trocar assembly comprising a septum seal disposed in the channel including a seal tip having a proximal facing surface, the seal tip including portions defining an orifice; and a septum shield including a tubular member having a proximal end and a distal end, and a plurality of blades or leaflets protruding distally from the distal end of the tubular member, the septum shield being placed inside the septum seal such that the blades engage the proximal facing surface of the seal tip. The trocar assembly may further comprise a zero closure seal such as a double duckbill valve disposed in the channel outside of the septum seal. The septum shield operates to reduce the drag force and to minimize axial movement of the septum shield and the instrument during insertion and removal of the instrument through the septum seal. The septum shield may be formed from a rigid plastic material, and the septum seal may be formed of an elastomeric material. The blades or leaflets may overlap or offset one another. The orifice may be expandable to accommodate the instrument having a diameter of about 5-15 mm. The blades or leaflets have distal tips that glide or roll against the instrument during placement of the instrument. The distal tips may comprise of a combination of material, durometer and shield geometry to control the behavior of the septum shield. The trocar assembly may further comprise a second septum shield disposed outside of the septum seal.
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Citations
37 Claims
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1. A trocar assembly having a channel defined along an elongate axis, the trocar assembly being adapted to receive a surgical instrument, the trocar assembly comprising:
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a septum seal disposed in the channel including a seal tip having a proximal facing surface, the seal tip including portions defining an orifice; and
a septum shield including a tubular member having a proximal end and a distal end, and a plurality of blades protruding distally from the distal end of the tubular member, the septum shield being placed inside the septum seal such that the blades engage the proximal facing surface of the seal tip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A valve assembly adapted to receive a surgical instrument having a cross-sectional dimension, comprising:
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a housing defining a channel extending therethrough along an elongate axis;
a septum seal disposed in the housing having distal portions defining an orifice, the distal portions being expandable radially outwardly to enlarge the orifice; and
a septum shield operably attached to the housing and engaging the septum seal outwardly of the orifice for enlarging the orifice, the septum shield being responsive to the instrument for enlarging the orifice in proportion to the cross-sectional dimension of the instrument, the septum shield including a proximal end and a distal end, the distal end comprising a plurality of blades, each of the blades having a distal end being adapted to engage the septum seal radially of the distal portions defining the orifice. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A seal assembly adapted to receive an elongate object and to form a seal around the object, comprising:
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a housing defining a channel configured to receive the object moving generally axially through the channel;
a septum extending across the channel of the housing;
portions of the septum defining a hole adapted to receive the object with the septum portions engaging the object through the channel; and
a septum shield placed within the housing having a proximal end a distal end, the distal end comprising a plurality of blades that facilitate guidance of the object toward the hole and enlargement of the hole in response to insertion of the object into the channel. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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Specification