Operating trocar
AssigneeOlympus Optical Co., Ltd.
InventorsHideyuki Kasahara, Takahiro Kogasaka
Life of this patent
Estimating the term…
Abstract
An operating trocar according to the invention includes a guide tube inserted through a body surface to introduce an endoscope and an operating instrument into a living body, and a flange portion provided on the guide tube to make a predetermined angle with a plane approximately perpendicular to an axial direction of the guide tube, the flange portion being fixed to an outer surface of the body surface. Preferably, the operating trocar also includes a gastightness retaining portion provided in the guide tube to retain gastightness between a circumferential surface of an internal hole of the guide tube and a medical instrument such as an endoscope and an operating instrument inserted in the internal hole of the guide tube.
Claims39
A trocar for endoscopic operation, comprising:
- a guide tube for introducing a medical instrument into a living body;
- and
- a flange provided on an outer circumference of the guide tube at a location other than opposite ends thereof, the flange having a contact surface which comes into contact with an outer surface of the living body and which is oblique with respect to an axis of the guide tube.
An operating trocar, comprising:
- a guide tube for introducing a medical instrument into a living body;
- and
- a flange removably secured to an outer circumference of the guide tube.
An operating trocar, comprising:
- a guide tube for introducing a medical instrument into a living body;
- a flange provided on an outer circumference of the guide tube;
- and
- a fixing portion for fixing the trocar to the living body.
An operating trocar, comprising:
- a guide tube for introducing a medical instrument into a living body;
- a flange having a hole through which to pass a suture, the flange being provided on an outer circumference of the guide tube and having a contact surface which comes into contact with an outer surface of the living body and which is oblique with respect to an axis of the guide tube.
An operating trocar, comprising:
- a guide tube having a gastightness retaining member provided in an interior of the guide tube for sealing against a medical instrument inserted into the guide tube;
- and
- a flange provided on an outer circumference of the guide tube.
An operating trocar, comprising:
- a guide tube for introducing a medical instrument into a living body;
- and
- a flange provided on an outer circumference of the guide tube and having a wall thickness different from a wall thickness of the guide tube.
An operating trocar, comprising:
- a guide tube for introducing a medical instrument into a living body;
- and
- a flange provided on an outer circumference of the guide tube and having a contact surface which comes into contact with an outer surface of the living body and which makes a variable angle with an axis of the guide tube.
An endoscopic operating trocar which is fitted into a hole formed in a body surface in order to introduce at least one of an endoscope and an operating instrument into a living body, comprising:
- a guide tube inserted through a body surface to introduce at least one of the endoscope and the operating instrument into the living body through an internal conduit in the guide tube;
- a flange portion provided on the guide tube to make a predetermined angle with a plane approximately perpendicular to an axial direction of the guide tube, the flange portion being disposed on an outer surface of the body surface;
- and
- a sealing portion provided in the guide tube to at least retain gastightness between a circumferential surface of the internal conduit of the guide tube and an exterior surface of at least one of the endoscope and the operating instrument inserted in the internal conduit of the guide tube.
A method of inserting a trocar into a living body, comprising the steps of:
- inserting at least a portion of the trocar into the living body at an oblique angle relative to an outer surface of the living body;
- and
- fixing a flange to the living body at the oblique angle to cause the outer surface of the living body to adhere to a contact surface of the flange which comes into contact with the outer surface of the living body.
A method of inserting a trocar into a living body, comprising the steps of:
- inserting at least a portion of the trocar into the living body;
- causing at least a portion of a flange of the trocar and an outer surface of the living body to adhere to each other;
- and
- adhering an adhesive sheet having at least a portion wider in area than the flange to the flange as well as the outer surface of the living body to fix the trocar to the living body.
A method of inserting a trocar into a living body, comprising the steps of:
- inserting at least a portion of the trocar into the living body;
- and
- fixing the trocar to the living body by securing a band extending from the trocar around a portion of the living body.
Dependencies are inferred from the claim text.