Single port access system
First Claim
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1. A surgical access system comprising:
- a retractor comprising;
a proximal ring, wherein the proximal ring is configured to be disposed proximate an outer surface of a body wall of a patient;
a retraction sheath coupled to the proximal ring, wherein the retraction sheath is configured to be disposed through an opening in the body wall of the patient;
a distal ring coupled to the retraction sheath, wherein the distal ring is configured to be disposed proximate an inner surface of the body wall of the patient; and
a sealing cap couplable to the proximal ring of the retractor;
a trocar comprising;
a fixation cannula comprising a cannula body comprising a proximal end and a distal end;
a seal assembly coupled to the proximal end of the cannula body;
a retainer radially extending from the distal end of the cannula body;
wherein the trocar has an insertion configuration in which the cannula body is insertable into the sealing cap and disposed proximate an outer surface of the sealing cap and the trocar has a fixation configuration in which the cannula body captures the sealing cap between the proximal end of the cannula body and the retainer of the cannula body, thereby fixing the cannula to the sealing cap;
wherein the retainer remains unchanged radially extending from the distal end of the cannula body in both the insertion configuration and in the fixation configuration.
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Abstract
Embodiments of a surgical access system useful for single or limited port procedures comprise a trocar comprising a fixation cannula, a retractor, and a gel cap removably coupled to the retractor. The gel cap comprises a gel pad that acts as an artificial body wall, through which instruments may be inserted into a body cavity, either directly or through one or more trocars. The fixation cannula comprises a retainer and a bolster, which together, capture the artificial body wall therebetween, thereby fixing the trocar thereto. The gel pad permits flexible instrument placement, as well as translational and angular degrees of freedom for the instruments while maintaining a gas tight seal.
809 Citations
18 Claims
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1. A surgical access system comprising:
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a retractor comprising; a proximal ring, wherein the proximal ring is configured to be disposed proximate an outer surface of a body wall of a patient; a retraction sheath coupled to the proximal ring, wherein the retraction sheath is configured to be disposed through an opening in the body wall of the patient; a distal ring coupled to the retraction sheath, wherein the distal ring is configured to be disposed proximate an inner surface of the body wall of the patient; and a sealing cap couplable to the proximal ring of the retractor; a trocar comprising; a fixation cannula comprising a cannula body comprising a proximal end and a distal end; a seal assembly coupled to the proximal end of the cannula body; a retainer radially extending from the distal end of the cannula body; wherein the trocar has an insertion configuration in which the cannula body is insertable into the sealing cap and disposed proximate an outer surface of the sealing cap and the trocar has a fixation configuration in which the cannula body captures the sealing cap between the proximal end of the cannula body and the retainer of the cannula body, thereby fixing the cannula to the sealing cap; wherein the retainer remains unchanged radially extending from the distal end of the cannula body in both the insertion configuration and in the fixation configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A surgical access system comprising:
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a sealing cap comprising gel material and a gas inlet or outlet port, the sealing cap connectable to a retractor, and a trocar comprising; a fixation cannula comprising a cannula body comprising a proximal end and a distal end; a seal assembly coupled to the proximal end of the cannula body; and a retainer radially extending from the distal end of the cannula body; wherein the trocar has an insertion configuration in which the cannula body is insertable through the gel material and is disposed outside and proximate an outer surface of the gel material and the trocar has a fixation configuration in which the cannula body captures the gel material between the proximal end of the cannula body and the retainer of the cannula body, thereby fixing the cannula to the sealing cap; wherein the retainer remains unchanged radially extending from the distal end of the cannula body in both the insertion configuration and in the fixation configuration. - View Dependent Claims (15, 16, 17, 18)
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Specification