| 摘要 |
Balloon catheter and stent delivery device A balloon catheter comprising a tubular catheter shaft (1 ) having a proximal and a distal end (2), an elongated dilatation balloon (3) being arranged on the catheter shaft (1) in the vicinity of the distal end (2) thereof, and an indistensible covering sleeve (4) being movable along the catheter shaft (1), said covering sleeve (4) having a first portion (10) with a first inner diameter (D1) surrounding the catheter shaft (1) and a second portion (11) with a second inner diameter (D2) being pushable over the deflated dilatation balloon (3), said second inner diameter (D2) being larger than said first inner diameter (D1), comprises for continuous adjustability of the fully expandable balloon length at the outside end of the second portion (1 1 ) an indistensible third portion (12) with a third inner diameter (D3), said third inner diameter (D3) ranging from said first inner diameter (D1) to said second inner diameter (D2).
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