Cannulas having wall strengthening features, and related systems and methods
AssigneeIntuitive Surgical Operations, Inc.
InventorsDouglas S. LANGLEY, Justin KROM, Robert C. REID
Life of this patent
Estimating the term…
Abstract
A cannula may include a bowl portion comprising a first opening and a second opening, and an insertion tube extending from the bowl portion. The insertion tube defines a passage extending from the second opening and terminating in a distal end opening. The passage is configured to receive an instrument to be advanced through the cannula. The insertion tube has a transparent portion extending proximally from the distal end opening, and a strengthened portion extending proximally from the transparent portion.
Claims22
(canceled)
A cannula, comprising:
- a proximal end comprising a proximal end opening;
- a distal end comprising a distal end opening;
- a lateral wall defining a passage extending from the proximal end opening at the proximal end to the distal end opening at the distal end, the passage configured to receive a medical instrument through the proximal end opening and advance the medical instrument toward the distal end opening;
- a predetermined target insertion region indicated along the lateral wall, the predetermined target insertion region indicative of a depth to which the cannula is to be inserted to perform a medical procedure;
- a proximal portion of the lateral wall extending distally from the proximal end, the proximal portion of the lateral wall comprising a first material;
- and
- a distal portion of the lateral wall extending proximally from the distal end, the distal portion of the lateral wall comprising a second material different from the first material.
A method of making a cannula configured for advancement of a medical instrument therethrough, the method comprising:
- forming a proximal portion comprising a proximal end opening of the cannula from a first material;
- forming a distal portion comprising a distal end opening of the cannula from a second material different from the first material;
- forming a target insertion indicium on an exterior of the distal portion;
- and
- joining the proximal portion and the distal portion at a location proximal of the target insertion indicium, a passage configured to receive and advance a medical instrument being extending from the proximal end opening to the distal end opening and through the joined proximal and distal portions.
Dependencies are inferred from the claim text.