Endoscopic apparatus with integrated variceal ligation device
First Claim
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1. A medical device, comprising:
- an elongate shaft having a proximal end and a distal portion;
a plurality of compressible structures disposed on the distal portion and arranged so that each pair of compressible structures defines a space therebetween;
a plurality of compressive elements, wherein each compressive element corresponds to one of the plurality of compressible structures on the distal portion;
a plurality of elastic members, each elastic member disposed in the space between a corresponding pair of adjacent compressible structures; and
an elongate member, wherein a portion of the elongate member is coupled to each compressible structure such that, upon tension of the elongate member, one of the plurality of elastic members is released from the distal portion;
wherein, prior to applying tension to the elongate member, the plurality of compressible structures extend radially outward from an exterior surface of the distal portion; and
wherein, upon tension of the elongate member, one of the plurality of compressible structures is pulled toward the exterior surface of the distal portion.
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Abstract
A variceal banding endoscope includes an elongated shaft having a distal end and a proximal end that is removably connected to a control unit. The endoscope includes a variceal banding apparatus fixedly attached to the distal end of the endoscope and capable of receiving a plurality of ligation bands. A trigger cable extends from the proximal end to the distal end of the shaft and is digitally actuated by an actuator in the control unit or handle of the scope in response to a user input device.
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Citations
19 Claims
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1. A medical device, comprising:
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an elongate shaft having a proximal end and a distal portion; a plurality of compressible structures disposed on the distal portion and arranged so that each pair of compressible structures defines a space therebetween; a plurality of compressive elements, wherein each compressive element corresponds to one of the plurality of compressible structures on the distal portion; a plurality of elastic members, each elastic member disposed in the space between a corresponding pair of adjacent compressible structures; and an elongate member, wherein a portion of the elongate member is coupled to each compressible structure such that, upon tension of the elongate member, one of the plurality of elastic members is released from the distal portion; wherein, prior to applying tension to the elongate member, the plurality of compressible structures extend radially outward from an exterior surface of the distal portion; and wherein, upon tension of the elongate member, one of the plurality of compressible structures is pulled toward the exterior surface of the distal portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A medical device, comprising:
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a shaft having a proximal end and a distal end; a hood coupled to the distal end of the shaft, the hood having a plurality of elastic members disposed on the hood and a plurality of compressible structures disposed on the hood, wherein each elastic member is disposed between adjacent compressible structures; a plurality of compressive elements, wherein each compressive element corresponds to one of the plurality of compressible structures on the hood; and an elongate member coupled to the plurality of compressive elements such that, upon tension of the elongate member, one of the plurality of elastic members is released from the hood; wherein, prior to applying tension to the elongate member, the plurality of compressible structures extend radially outward of an exterior surface of the hood; and wherein, upon tension of the elongate member, one of the plurality of compressible structures is compressed toward the exterior surface of the hood. - View Dependent Claims (10, 11, 12, 13)
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14. A medical system, comprising:
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a medical device having a proximal end and a distal end; a plurality of compressible structures disposed on the distal end and arranged so that each pair of compressible structures defines a space therebetween, wherein each compressible structure includes a compressive element configured to press against a corresponding compressible structure extending radially outward from an exterior surface of the distal end; a plurality of elastic members, each elastic member disposed in the space between a corresponding pair of adjacent compressible structures; and an elongate member coupled to each compressive element; and a control unit including an actuator configured to apply tension to the elongate member, thereby causing each of the compressive element to pull a corresponding compressible structure toward the exterior surface of the medical device. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification