Access apparatus including integral zero-closure valve and check valve
View Patent ↗An access apparatus for use in surgical procedures is provided. The access apparatus includes a zero-closure valve disposed within a housing associated with the access apparatus and adjacent a longitudinal passage defined by an access member operably associated with the access apparatus. The zero-closure valve is configured to provide a substantially fluid-tight seal in the absence of the surgical instrument inserted therethrough. A check-valve is operably associated with the zero-closure valve and is in fluid communication with the longitudinal passage and an insufflation port operably associated with the access member. The check-valve is configured to provide a fluid-tight seal when a pressure inside the access apparatus is greater than a pressure external thereof.
1. An access apparatus for use in surgical procedures, the access apparatus comprising:
an access member defining a longitudinal axis and having a longitudinal passage that provides entry to an abdominal cavity of a patient, the longitudinal passage being adapted to permit passage of a surgical instrument utilized in performing a surgical procedure;
a housing including a proximal end defining an opening in communication with the longitudinal passage of the access member to permit passage of the surgical instrument; and
a zero-closure valve disposed within the housing and adjacent the longitudinal passage, the zero-closure valve configured to provide a substantially fluid-tight seal in the absence of the surgical instrument inserted therethrough, the zero-closure valve including a check-valve integrally formed therewith, the check-valve in fluid communication with the longitudinal passage and an insufflation port operably associated with the access member, wherein the check-valve is configured to provide a fluid-tight seal when a pressure inside the access apparatus is greater than a pressure external thereof,
wherein the check-valve includes a flapper portion hinged to the zero-closure valve, the flapper portion and zero-closure valve formed with a region of material therebetween that functions as a living hinge configuration when the flapper portion is moved relative to the zero-closure valve.
2. An access apparatus according to claim 1 , wherein a detent is operably disposed on the flapper portion and configured to provide increased fluid tight integrity of the fluid-tight seal in the absence of fluid through the check-valve.
3. An access apparatus according to claim 1 , wherein a spring is operably associated with the check-valve and configured to assist in maintaining a fluid tight seal between the flapper portion and the insufflation port in the absence of fluid therethrough and when a pressure inside one of the abdominal cavity and the access apparatus is greater than a pressure external thereof.
4. An access apparatus according to claim 3 , wherein the spring is of the type selected from the group consisting of a torsion spring, leaf spring and coil spring.
5. An access apparatus according to claim 1 , wherein at least a portion of the zero-closure valve and the check-valve are made from an elastomeric material.
6. An access apparatus according to claim 1 , wherein the access apparatus includes an instrument seal.
7. A zero closure valve adapted to connect to an access apparatus configured to provide access into an abdominal cavity of a patient, comprising:
a check-valve integrally formed with the zero-closure valve and, the check-valve in fluid communication with a longitudinal passage and an insufflation port operably associated with the access member, wherein the check-valve is configured to provide a fluid-tight seal when a pressure inside the access apparatus is greater than a pressure external thereof,
wherein the check-valve includes a flapper portion hinged to the zero-closure valve, the flapper portion and zero-closure valve formed with a region of material therebetween that functions as a living hinge configuration when the flapper portion is moved relative to the zero-closure valve.
8. An access apparatus according to claim 7 , wherein a detent is operably disposed on the flapper portion and configured to provide increased fluid tight integrity of the fluid-tight seal in the absence of fluid through the check-valve.
9. An access apparatus according to claim 7 , wherein a spring is operably associated with the check-valve and configured to assist in maintaining a fluid-tight seal between the flapper portion and the insufflation port in the absence of fluid therethrough and when a pressure inside one of the abdominal cavity and the access apparatus is greater than a pressure external thereof.
10. An access apparatus according to claim 9 , wherein the spring is of the type selected from the group consisting of a torsion spring, leaf spring and coil spring.
11. An access apparatus according to claim 7 , wherein at least a portion of the zero-closure valve and the check-valve are made from an elastomeric material.
12. An access apparatus according to claim 7 , wherein the access apparatus includes an instrument seal.