Endoscopic cholangiogram guide instrument and method of use
First Claim
1. A guide instrument for cannulating a biliary duct with a flexible catheter as part of a laparoscopic cholangiographic surgical procedure, said instrument comprising:
- (a) a grasping forceps component comprising;
(i) an elongate shaft extending along a longitudinal axis between a first and a second end;
(ii) a pair of jaws positioned at said first end of said shaft and mutually pivotally coupled thereat for movement between an opened and a closed orientation for selectively grasping said duct; and
(iii) an actuator positioned at said second end of said shaft and coupled in a drive relationship with said jaws for moving said jaws between said opened orientation and said closed orientation; and
(b) an elongate, generally cylindrical guide tube slidably supported along said elongate shaft, having an internal catheter channel extending therethrough, said catheter channel having a central axis spaced radially from said longitudinal axis and extending between an input end for receiving the catheter and an output end for expressing the catheter from said guide tube, said guide tube being rotatable about said longitudinal axis to define with the central axis of said catheter channel a first confrontation radius for presenting the catheter expressed from the output end of said catheter channel to said biliary duct at a confrontation angle effective for cannulating said duct as said duct is grasped between the jaws of said grasping forceps component.
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Accused Products
Abstract
A guide instrument for cannulating a biliary duct with a flexible catheter, and a method of using the same as part of a laparoscopic cholangiographic surgical procedure. The guide instrument is provided as having a grasping forceps component formed of an elongate shaft extending along a longitudinal axis between a first and a second end. A pair of jaws are positioned at the first end of the shaft and are mutually pivotally coupled thereat for movement between an opened and a closed orientation for selectively grasping the duct. An actuator positioned at the second end of the shaft is coupled in a drive relationship with the jaws for moving the jaws between the opened and closed orientations. An elongate, generally cylindrical guide tube is slidably supported along the longitudinal axis of the elongate shaft and is formed as having an internal catheter channel therethrough. The catheter channel has a central axis which is spaced radially from the longitudinal axis, and is provided to extend between an input end for receiving the catheter and an output end for expressing the catheter from the guide tube. The guide tube is rotatable about the longitudinal axis to define with the central axis of the catheter channel a first confrontation radius for presenting the catheter expressed from the output end of the catheter channel to the biliary duct at a confrontation angle effective for cannulating the duct as it is grasped between the jaws of the grasping forceps component.
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Citations
23 Claims
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1. A guide instrument for cannulating a biliary duct with a flexible catheter as part of a laparoscopic cholangiographic surgical procedure, said instrument comprising:
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(a) a grasping forceps component comprising; (i) an elongate shaft extending along a longitudinal axis between a first and a second end; (ii) a pair of jaws positioned at said first end of said shaft and mutually pivotally coupled thereat for movement between an opened and a closed orientation for selectively grasping said duct; and (iii) an actuator positioned at said second end of said shaft and coupled in a drive relationship with said jaws for moving said jaws between said opened orientation and said closed orientation; and (b) an elongate, generally cylindrical guide tube slidably supported along said elongate shaft, having an internal catheter channel extending therethrough, said catheter channel having a central axis spaced radially from said longitudinal axis and extending between an input end for receiving the catheter and an output end for expressing the catheter from said guide tube, said guide tube being rotatable about said longitudinal axis to define with the central axis of said catheter channel a first confrontation radius for presenting the catheter expressed from the output end of said catheter channel to said biliary duct at a confrontation angle effective for cannulating said duct as said duct is grasped between the jaws of said grasping forceps component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A guide instrument for presenting a second instrument to a biliary duct as part of a laparoscopic cholangiographic surgical procedure, said instrument comprising:
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(a) a gasping forceps component comprising; (i) an elongate shaft extending along a longitudinal axis between a first and a second end; (ii) a pair of jaws being positioned at said first end of said shaft and mutually pivotally coupled thereat for movement between an opened and a closed orientation for selectively grasping said duct; (iii) an actuator positioned at said second end of said shaft and coupled in a drive relationship with said jaws for moving said jaws between said open orientation and said closed orientation; and (b) an elongate, generally cylindrical guide tube slidably supported along said longitudinal axis of said elongate shaft having an internal instrument channel therethrough, said instrument channel having a central axis spaced radially from said longitudinal axis and extending between an input end for receiving the second instrument and an output end for expressing the second instrument from said guide tube, said guide tube being rotatable about said longitudinal axis to define with the central axis of said instrument channel a first confrontation radius for presenting the second instrument expressed from the output end of said instrument channel to said biliary duct at a select confrontation angle as said duct is grasped between the jaws of said grasping forceps component. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for cannulating a biliary duct with a flexible catheter as part of a laparoscopic cholangiographic surgical procedure, said method comprising the steps of:
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(a) providing a guide instrument comprising; (i) a grasping forceps component comprising; an elongate shaft extending along a longitudinal axis between a first and a second end; a pair of jaws positioned at said first end of said shaft and mutually pivotally coupled thereat for movement between an opened and a closed orientation for selectively grasping said duct; and an actuator positioned at said second end of said shaft and coupled in a drive relationship with said jaws for moving said jaws between said opened orientation and said closed orientation; and (ii) an elongate, generally cylindrical guide tube slidably supported on said longitudinal axis of said elongate shaft having an internal catheter channel therethrough, said catheter channel having a central axis spaced radially from said longitudinal axis and extending between an input end for receiving the catheter and an output end for expressing the catheter from said guide tube, said guide tube being rotatable about said longitudinal axis to define with the central axis of said catheter channel a first confrontation radius for presenting the catheter expressed from the output end of said catheter channel to said biliary duct at a confrontation angle effective for cannulating said duct as said duct is grasped between the jaws of said gasping forceps component; (b) grasping said biliary duct between the jaws of said grasping forceps component; (c) directing the catheter of said guide instrument through the catheter channel of the guide tube to express the catheter from the output end thereof; (d) rotating the guide tube about the longitudinal axis of the elongate shaft of the gasping forceps component to present the catheter expressed from the output end of said guide tube to said biliary duct at a confrontation angle effective for cannulating said duct; and (e) inserting the catheter into said duct for its cannulation. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification