Surgical access device
First Claim
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1. A surgical access device, comprising:
- a proximal housing, a distal cannula, and a working channel extending through the proximal housing and the distal cannula that is sized and configured to receive a surgical instrument;
a seal disposed within the proximal housing configured to seal the working channel when no surgical instrument is disposed therethrough, the seal having an opening extending therethrough and positioned to receive a surgical instrument passed through the working channel; and
a fluid remover positioned distal of the seal, the fluid remover having an opening extending therethrough and positioned to receive a surgical instrument passed through the working channel, and the fluid remover being configured such that, when an instrument occludes the opening in the fluid remover, the fluid remover allows insufflation gas to pass between a proximal side of the fluid remover and the distal cannula to thereby equalize a pressure on proximal and distal sides of the fluid remover.
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Abstract
The present invention generally provides methods and devices for removing fluid from a surgical instrument. Surgical access devices and seal systems are generally provided having one or more valves or seal assemblies to create a closed system between the outside environment and the environment in which the surgical access device is being inserted. The devices of systems can also include a fluid remover in the form of a sorbent element, a scraper element, a wicking element, or any combination thereof that is configured to remove fluid from a working channel of the device or system and/or from a surgical instrument inserted therethrough.
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Citations
26 Claims
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1. A surgical access device, comprising:
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a proximal housing, a distal cannula, and a working channel extending through the proximal housing and the distal cannula that is sized and configured to receive a surgical instrument; a seal disposed within the proximal housing configured to seal the working channel when no surgical instrument is disposed therethrough, the seal having an opening extending therethrough and positioned to receive a surgical instrument passed through the working channel; and a fluid remover positioned distal of the seal, the fluid remover having an opening extending therethrough and positioned to receive a surgical instrument passed through the working channel, and the fluid remover being configured such that, when an instrument occludes the opening in the fluid remover, the fluid remover allows insufflation gas to pass between a proximal side of the fluid remover and the distal cannula to thereby equalize a pressure on proximal and distal sides of the fluid remover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A surgical access device, comprising:
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a housing defining a working channel sized and configured to receive a surgical instrument; a seal disposed within the housing, the seal having an opening positioned to receive a surgical instrument passed through the working channel; a sorbent disposed in the housing and configured to sorb fluid to prevent fluid from being redeposited on surgical instruments passed through the working channel; and a scraper disposed in the housing and configured to scrape fluid off of surgical instruments passed through the working channel, the scraper being in contact with a proximal surface of the sorbent. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An assembly for use in a surgical access device, comprising:
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a seal having an opening configured to receive a surgical instrument therethrough; a sorbent associated with the seal and configured to sorb fluid away from at least one of the opening and a surgical instrument passed through the opening; and a scraper element configured to scrape fluid off of a surgical instrument extending through the opening of the seal, the scraper element being in contact with a proximal surface of the sorbent. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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Specification