Delivering a uretheral stent
First Claim
1. A delivery system for placement of a stent within a body of a patient, comprising:
- (a) a stent comprising a coil defining a lumen and having an initial length when in an expanded rest state, adjacent turns of the coil being positioned to substantially prevent tissue ingrowth through the turns and into the lumen when the stent is placed within the body;
(b) a retaining structure sized for insertion into the body and comprising one or more pins which collapse and deform at least a portion of the stent, thereby altering the cross-sectional shape of the stent, while the stent maintains substantially its initial length; and
(c) an elongated member coupled to a distal end of the retaining structure to enable insertion of the retaining structure with the collapsed and deformed stent into the body such that the collapsed and deformed stent can be deployed from the retaining structure and placed into the body of the patient while maintaining substantially its initial length.
2 Assignments
0 Petitions
Accused Products
Abstract
A delivery system for placement of a stent within a body of a patient includes a stent, a retaining structure, and an elongated member. The stent includes a coil which defines a lumen and has an initial length when in an expanded rest state. Adjacent turns of the coil are positioned to substantially prevent tissue ingrowth through the turns and into the lumen when the stent is placed within the body. The retaining structure is sized for insertion into the body and includes one or more pins. The pins collapse and deform the stent while the stent maintains substantially its initial length. The elongated member is coupled to the retaining structure and enables insertion of the retaining structure with the stent into the body such that the stent can be deployed from the retaining structure and placed into the body while maintaining substantially its initial length.
182 Citations
20 Claims
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1. A delivery system for placement of a stent within a body of a patient, comprising:
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(a) a stent comprising a coil defining a lumen and having an initial length when in an expanded rest state, adjacent turns of the coil being positioned to substantially prevent tissue ingrowth through the turns and into the lumen when the stent is placed within the body;
(b) a retaining structure sized for insertion into the body and comprising one or more pins which collapse and deform at least a portion of the stent, thereby altering the cross-sectional shape of the stent, while the stent maintains substantially its initial length; and
(c) an elongated member coupled to a distal end of the retaining structure to enable insertion of the retaining structure with the collapsed and deformed stent into the body such that the collapsed and deformed stent can be deployed from the retaining structure and placed into the body of the patient while maintaining substantially its initial length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of loading a stent into a retaining structure, comprising:
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(a) providing a stent comprising a coil defining a lumen and having an initial length when in an expanded rest state, adjacent turns of the coil being positioned to substantially prevent tissue ingrowth through the turns and into the lumen when the stent is placed within a body of a patient;
(b) providing a retaining structure sized for insertion into the body and comprising one or more pins; and
(c) inserting the stent into the retaining structure such that at least a portion of the stent becomes collapsed and deformed by the one or more pins, thereby altering the cross-sectional shape of the stent, while the stent retains its initial length. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A delivery system for placement of a stent within a body of a patient, comprising:
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(a) means for retaining at least a portion of a stent in a collapsed and deformed state with one or more pins, thereby altering the cross-sectional shape of the stent, while the collapsed and deformed stent maintains substantially an initial length, the stent having the initial length when in an expanded rest state, the stent comprising a coil defining a lumen, adjacent turns of the coil being positioned to substantially prevent tissue ingrowth through the turns and into the lumen when the stent is placed within the body; and
(b) means, coupled to the retaining means, for enabling insertion of the retaining means with the collapsed and deformed stent into the body such that the collapsed and deformed stent can be deployed from the retaining means and placed into the body of the patient while maintaining substantially its initial length. - View Dependent Claims (19, 20)
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Specification