Endoscopic instrument
AssigneeOlympus Optical Co., Ltd.
InventorsTakayuki Suzuki, Masumi Matsushita
Life of this patent
Estimating the term…
Abstract
A fitting hole portion of a shaft portion fitted to a mouth ring portion of an endoscope is provided to an attachment portion of a ligation band operation band, and an operation to switch between a flange portion insertion position at which the flange portion of the mouth ring is insertable and an engagement position at which a protrusion portion of the mouth ring portion is engagable is performed by a sliding member slidable with respect to the shaft portion.
Claims15
An endoscopic instrument,
- an operation portion of an endoscope having a mouth ring of a channel which is inserted through a main body of said endoscopic instrument used in combination with said endoscope,
- said mouth ring portion having a protrusion portion which protrudes from said operation portion toward the outer side and a flange portion arranged at an edge portion of said protrusion portion,
- said endoscopic instrument main body having an attachment portion attached to said mouth ring,
- wherein said attachment portion has a mouth ring fitting portion fitted to said mouth ring portion,
- said mouth ring fitting portion having:
- a cylindrical shaft portion including at a shaft center portion a fitting hole portion fitted to said mouth ring portion;
- and
- an engagement operation portion which is supported on said shaft portion and operates to switch between a flange portion insertion position at which said flange portion of said mouth ring portion can be inserted and an engagement position at which it can be engaged with said protrusion portion of said mouth ring.
An endoscopic instrument used in combination with an endoscope, wherein said endoscopic instrument is an endoscopic ligation apparatus which ligates a living tissue,
- said endoscopic ligation apparatus comprising:
- an attachment which can be attached at an end of said endoscope and has at least one ligation band fitted thereon;
- one operation cord which is inserted into a channel of said endoscope from said attachment;
- an equipment operation portion which is fixed in the vicinity of said operation portion of said endoscope and gives a pulling operation toward the front side to said operation cord;
- a take-up shaft of said operation cord which is supported by said equipment operation portion so as to be capable of swiveling;
- a fixing portion of said operation cord which is provided on the peripheral surface of said take-up shaft;
- and
- a plurality of coupling points in a range where said operation cord and said equipment operation portion exist.
An endoscopic instrument used in combination with an endoscope, wherein said endoscopic instrument is an endoscopic ligation apparatus which ligates a living tissue,
- said endoscopic ligation apparatus comprising:
- an attachment which can be attached at an end of said endoscope and has at least one ligation band fitted thereon;
- one operation cord which is inserted into a channel of said endoscope from said attachment;
- an equipment operation portion which is fixed in the vicinity of an operation portion of said endoscope and gives a pulling operation toward the front side to said operation cord;
- a take-up shaft of said operation cord which is supported by said equipment operation portion so as to be capable of swiveling;
- and
- a fixing portion of said operation cord provided on the peripheral surface of said take-up shaft,
- said fixing portion including a groove which can hold said operation cord and a protrusion portion that said operation cord can be wound around and fixed to.
An endoscopic instrument used in combination with an endoscope, wherein said endoscopic instrument is an endoscopic ligation apparatus which ligates a living tissue,
- said endoscopic ligation apparatus comprising:
- an attachment which can be attached at an end of said endoscope and has at least one ligation band fitted thereon;
- one operation cord which is inserted into a channel of said endoscope from said attachment;
- an equipment operation portion which is fixed in the vicinity of an operation portion of said endoscope and gives a pulling operation toward the front side to said operation cord;
- a take-up shaft of said operation cord, said take-up shaft having a cavity therein;
- at least one engagement cam which restricts a rotational stroke of said take-up shaft;
- and
- an engagement claw which engages with said engagement cam and has the elasticity which gives a rotational operation and a fixing operation of said take-up shaft.
Dependencies are inferred from the claim text.