Catheter for injecting a fluid or medicine
First Claim
1. A catheter for injecting a fluid or medication into hollow organs and body cavities, particularly into coronary vessels and arteries, comprising:
- a front end with a catheter tip adapted to be inserted into arteries and an extracorporal end opposite said catheter tip;
a catheter stem extending between said catheter tip and said extracorporal end;
a plurality of injection needles arranged in a bundle and firmly mounted in said catheter stem and having needle points arranged in the catheter tip for relative movement of said tip with respect to said injection needles, said injection needle points, in a retracted position, lying inside the catheter tip and, in an extended position, lying exposed in readiness for applying said fluid or medicine;
an operating device connected to the extracorporal end of the catheter and an operating wire extending through said bundle and being connected to said catheter tip and being operable to effect movement of said catheter tip; and
openings formed in the catheter tip allowing the needle points to protrude therefrom laterally as well as forwardly when said catheter tip is retracted;
said catheter stem including said lumen and said needles being connected to one part of the operating device and the operating wire being connected to the other part thereof, the arrangement being such that movement of one of said two parts in a predetermined direction relative to the other effects a corresponding relative movement between the catheter tip and the injection needles.
1 Assignment
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Accused Products
Abstract
An injection catheter including a catheter stem, a cathetertip, and a bundle of injection needles, wherein either the catheter tip is axially displaceable relative to the catheter shaft or the catheter tip is fixedly connected to the catheter stem and the bundle of injection needles is longitudinally displaceable relative to the catheter tip. The catheter tip may take various forms, as the injection needles within the catheter stem may take various forms and may be guided in various ways. An operating device is provided for effecting relative movements between the injection needles and the catheter tip, which operating device comprises two parts that are controllably displaceable relative to one another, thereby to cause the injection needles to be exposed or retracted. The operating device also includes inlets allowing medication to be applied through the injection needles.
677 Citations
12 Claims
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1. A catheter for injecting a fluid or medication into hollow organs and body cavities, particularly into coronary vessels and arteries, comprising:
- a front end with a catheter tip adapted to be inserted into arteries and an extracorporal end opposite said catheter tip;
a catheter stem extending between said catheter tip and said extracorporal end;
a plurality of injection needles arranged in a bundle and firmly mounted in said catheter stem and having needle points arranged in the catheter tip for relative movement of said tip with respect to said injection needles, said injection needle points, in a retracted position, lying inside the catheter tip and, in an extended position, lying exposed in readiness for applying said fluid or medicine;
an operating device connected to the extracorporal end of the catheter and an operating wire extending through said bundle and being connected to said catheter tip and being operable to effect movement of said catheter tip; and
openings formed in the catheter tip allowing the needle points to protrude therefrom laterally as well as forwardly when said catheter tip is retracted;
said catheter stem including said lumen and said needles being connected to one part of the operating device and the operating wire being connected to the other part thereof, the arrangement being such that movement of one of said two parts in a predetermined direction relative to the other effects a corresponding relative movement between the catheter tip and the injection needles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a front end with a catheter tip adapted to be inserted into arteries and an extracorporal end opposite said catheter tip;
Specification