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Publication Number
US-9155832-B2
Publication Date
2015-10-13
Expiration Date
Abstract
An irrigating cannula includes a hub having an inner passage and a side port extending through the hub and connecting to the inner passage. The inner passage is configured to receive an instrument, and a fluid passage is defined between the hub and the instrument. The fluid passage is configured to deliver a fluid through an incision in a body.
Core Innovation
An irrigating cannula includes a hub having a first end, a second end, an inner passage, and a side port extending through the hub and connecting to the inner passage, with the inner passage configured to receive an instrument. A first cannula includes a body and a tubular member extending therefrom, and the first cannula is coupled to the hub such that the tubular member extends through the inner passage to define a fluid passage between the hub and the tubular member.
The fluid passage extends from the side port of the hub through the second end of the hub and is configured to deliver a fluid through an incision in a body, with the fluid delivery directed around the first cannula. The hub and first cannula are further associated with a sleeve coupled about the first end of the hub and the first cannula.
The irrigating cannula system additionally includes a second cannula with a tubular member configured for insertion into a body, and the first cannula tubular member extends into the second cannula such that the second cannula tubular member extends beyond the first cannula tubular member. The fluid passage extends between the first cannula tubular member and the second cannula to provide irrigation to the body.
A sleeve is coupled to the hub, the first cannula, and at least a portion of the second cannula, with the sleeve including a first portion engaging a body of the first cannula, a second portion engaging the hub, and a third portion engaging the second cannula. In the irrigating cannula system, a connection member coupled to the side port fluidly couples the inner passage to a fluid source.
Claims Coverage
The document includes two independent claims: an irrigating cannula and an irrigating cannula system. Across the independent claims, the main inventive features cover a hub with an inner passage and side port forming a fluid passage around an instrument-receiving cannula, and an irrigating cannula system that adds a fluid-source connection member, a second cannula arrangement for irrigation, and a sleeve that couples the hub and cannulae.
Hub with instrument-receiving inner passage and side port forming a fluid passage
A hub comprises a first end, a second end, an inner passage, and a side port extending through the hub and connecting to the inner passage, wherein the inner passage is configured to receive an instrument.
Fluid passage delivering fluid around an instrument-receiving cannula
A first cannula having a body and a tubular member extending therefrom is coupled to the hub such that the tubular member extends through the inner passage to define a fluid passage between the hub and the tubular member, the fluid passage extending from the side port of the hub through the second end of the hub and configured to deliver a fluid through an incision in a body, wherein the first cannula is configured to receive the instrument and the fluid passage is configured to deliver the fluid around the first cannula.
Sleeve coupled about the hub and first cannula
A sleeve coupled about the first end of the hub and the first cannula.
Connection member coupling the side port to a fluid source
A connection member coupled to said side port, said connection member configured to fluidly couple said inner passage and a fluid source.
First and second cannula arrangement providing irrigation around the first cannula
A second cannula including a tubular member configured for insertion into a body, wherein the first cannula tubular member extends into the second cannula such that the second cannula tubular member extends beyond the first cannula tubular member, and the fluid passage extends between the first cannula tubular member and the second cannula to provide irrigation to the body.
Sleeve coupling hub, first cannula, and at least a portion of the second cannula
A sleeve coupled to the hub, the first cannula, and at least a portion of the second cannula, the sleeve including a first portion engaging the body of the first cannula, a second portion engaging the hub, and a third portion engaging the second cannula.
Overall claim coverage centers on a single device architecture where a hub with an inner passage receives an instrument while a side port connected to the inner passage forms a fluid passage delivering fluid through an incision around an instrument-receiving cannula. The system claim extends this by adding a connection member to couple the hub to a fluid source, arranging a first cannula within a second cannula to establish irrigation between their tubular members, and using a sleeve with portions engaging the first cannula body, the hub, and the second cannula.
Stated Advantages
Delivering irrigation fluid through an incision in a body.
Providing fluid delivery around the first cannula while the first cannula is configured to receive an instrument.
Providing irrigation to the body through the defined fluid passage between the first and second cannula tubular members.
Documented Applications
Irrigating cannula and irrigating cannula system for ophthalmic and vitreo-retinal pediatric use in which smaller gauge surgery is needed (as described in the provided partial content).
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