Endoscopic ligating instrument for applying elastic bands
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-017/00
출원번호
US-0021036
(1993-02-23)
발명자
/ 주소
Ahmed, Munir
대리인 / 주소
Marnock, Marvin J.
인용정보
피인용 횟수 :
163인용 특허 :
6
초록▼
An endoscopic instrument for ligating multiple lesions within a hollow body organ. A flexible endoscope 10 is provided with a pair of tubular members 25, 26 affixed to the insertion end of the endoscope and a plurality of elastic ligating rings 50 are mounted side-by-side on one of the tubular membe
An endoscopic instrument for ligating multiple lesions within a hollow body organ. A flexible endoscope 10 is provided with a pair of tubular members 25, 26 affixed to the insertion end of the endoscope and a plurality of elastic ligating rings 50 are mounted side-by-side on one of the tubular members in uniformly spaced relationship. The endoscope is provided with longitudinally extending tubular passages comprising channels 16, 17 for accommodating means for illumination and viewing, a channel 18 for applying a suction force and a working channel 19. A flexible cable or wire 55 inserted through the working channel and connected at one end to one of the tubular members is movable for imparting relative motion between the tubular members in response to which an elastic ring 50 can be dislodged from the endoscope and placed in ligating relation to a lesion when the insertion end of the endoscope is oriented in surrounding relation to a target lesion and lesion tissue drawn into one of the tubular members by suction and whereby additional elastic rings can be sequentially dislodged and additional lesions similarly ligated during a single insertion of the instrument.
대표청구항▼
1. A flexible endoscopic instrument for ligating multiple lesions within a hollow body organ such as the alimentary tract, said instrument comprising: a flexible endoscope having a forward insertion end and a rearward viewing end, said endoscope including an illumination channel and a viewing cha
1. A flexible endoscopic instrument for ligating multiple lesions within a hollow body organ such as the alimentary tract, said instrument comprising: a flexible endoscope having a forward insertion end and a rearward viewing end, said endoscope including an illumination channel and a viewing channel, said illumination channel extending from the insertion end of the endoscope to a lateral port located near the viewing end of the endoscope and having a fiber optic cable inserted therethrough for connection to a light source, said viewing channel extending from the insertion end of the endoscope to said lateral port and having a fiber optic cable inserted therethrough for connection to a viewing means; means for providing a suction at the insertion end of the endoscope, said suction-providing means comprising a suction channel extending from the insertion end of the endoscope to said lateral port and being connectable therefrom in fluid communication with a source of suction; a first tubular member having a forward end and a rearward end, said rearward end having means for providing attachment to the insertion end of the endoscope in coaxial relation therewith; a second tubular member mounted to said first tubular member for relative motion with respect to said first tubular member, said second tubular member being of inelastic woven textile material and mounted with a first portion thereof sleeved over said first tubular member and a second portion thereof disposed internally of the first tubular member by folding of the textile material over the forward end of the first tubular member; a plurality of elastic ligating rings removably mounted in stretched condition about the radial periphery of said second tubular member in spaced side-by-side relation thereon; and means for imparting relative motion between said first and second tubular members to dislodge each of the elastic rings in controlled sequence during a single insertion of the endoscope into the body organ whereby each of the elastic rings can be dislodged from the endoscope and placed in ligating relation to a lesion when leison tissue is drawn into the first tubular member by said suction means, each said ring being applied to a different one of multiple lesions present in the body organ. 2. A flexible endoscopic instrument as set forth in claim 1 wherein means are provided on said first portion of textile material for maintaining the plurality of elastic ligating rings in spaced side-by-side relation where said first portion is sleeved over said first tubular member. 3. A flexible endoscopic instrument as set forth in claim 1 wherein said first portion of textile material is provided with a plurality of annular grooves formed in the external surface thereof in encircling relation to the central longitudinal axis of said second tubular member and in uniform spaced relation to one another, each said groove adapted to receive one of said elastic ligating rings. 4. A flexible endoscopic instrument as set forth in claim 1 and comprising a flexible actuating cable extending through said working channel from the insertion end of the endoscope through a second lateral port located near the viewing end of the endoscope with one end of the cable being attached to the rearward end of said second tubular member and the other end of the cable extending beyond said second lateral port whereby the cable can be pulled to cause sliding movement of the textile tubular member on the first tubular member and thereby controlled dislodgement of the elastic rings to effect the sequential ligation of multiple lesions. 5. A flexible endoscopic instrument as set forth in claim 4 wherein said other end of the flexible cable has a handle affixed thereto. 6. A flexible endoscopic instrument for ligating a multiplicity of lesions within a hollow body organ, such as the alimentary tract, said instrument comprising: (a) a flexible fiber optic endoscope having a forward insertion end and a rearward end, said endoscope including means for illumination and viewing through said endoscope, means for providing a suction force at said insertion end, and a working channel; (b) a first tubular member having a forward distal end and a rearward end, the rearward end having means for providing attachment to the insertion end of the endoscope; (c) a second tubular member of inelastic flexible material mounted by folding over the distal end of the first tubular member with a first portion thereof sleeved over a part of said first tubular member and a second portion thereof being disposed internally of said first tubular member; (d) a rigid ring member affixed about its periphery to one end of said second portion of said second tubular member, said ring member having an external diameter slightly smaller than the internal diameter of said second tubular member so as to be snugly receivable therein, said first portion of the second tubular member of flexible material being provided on its external surface with a plurality of annular grooves in encircling relation to the axes of said tubular members and being uniformly spaced in side-by-side relation to one another; a plurality of elastic ligating rings removably mounted in stretched condition about the circumferential periphery of said first portion of said second tubular member of inelastic flexible material, with each said elastic ring being received in a different one of said annular grooves; and means for imparting relative motion between said first and second tubular members to dislodge each of the elastic rings in controlled sequence during a single insertion of the endoscope into the body organ whereby each of the elastic rings can be dislodged from the endoscope and placed in ligating relation to a lesion when lesion tissue is drawn into the first tubular member by said suction means, each ring being applied to a different one of multiple lesions present in the body organ. 7. A flexible endoscopic instrument as set forth in claim 6 and comprising a flexible actuating cable extending through said working channel from the insertion end of the endoscope through a lateral port located near the rearward end of the endoscope with one end of the cable being attached to said rigid ring member affixed to said second tubular member and the other end of the cable extending through and beyond said lateral port whereby the cable can be pulled to cause sliding movement of the textile tubular member on the first tubular member and thereby controlled dislodgement of the elastic rings to effect the sequential ligation of multiple lesions. 8. A flexible endoscopic instrument as set forth in claim 7 wherein said other end of the flexible cable has a handle affixed thereto. 9. A flexible endoscopic instrument as set forth in claim 6 wherein the illumination and viewing means include channels extending through the endoscope from said insertion end to a lateral port near the rearward end of the endoscope and optical fibers extending through said channels for transmission of light. 10. A flexible endoscopic instrument as set forth in claim 6 wherein said flexible tubular member is of textile material. 11. A flexible endoscopic instrument for ligating a multiplicity of lesions with a hollow body organ, such as the alimentary tract, said instrument comprising: (a) a flexible fiber optic endoscope having a forward insertion end and a rearward end, said endoscope including means for illumination and viewing through said endoscope, means for providing a suction force at said insertion end, and a working channel; (b) a first tubular member having a forward distal end and a rearward end, the rearward end having means for providing attachment to the insertion end of the endoscope; (c) a second tubular member of foldable flexible material mounted by folding over the distal end of the first tubular member with a first portion thereof sleeved over a part of said first tubular member and a second portion thereof being disposed internally of said first tubular member; (d) a rigid ring member affixed about its periphery to one end of said second portion of said second tubular member, said ring member having an external diameter slightly smaller than the internal diameter of said flexible second tubular member so as to be snugly receivable therein; (e) a plurality of elastic ligating rings removably mounted in stretched condition about the circumferential periphery of said first portion of said second tubular member of flexible material in spaced side-by-side relation thereon; and (f) means for imparting relative motion between said first and second tubular members to dislodge each of the elastic rings in controlled sequence during a single insertion of the endoscope into the body organ whereby each of the elastic rings can be dislodged from the endoscope and placed in ligating relation to a lesion when lesion tissue is drawn into the first tubular member by said suction means, each said ring being applied to a different one of multiple lesions present in the body organ.
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