Device with a locating member for removably implanting a blood filter in a vein of the human body
First Claim
1. Apparatus to be removably implanted in a human body for filtering blood, which comprises;
- a filter adapted for filtering blood in a blood vessel;
a divisible catheter adapted for implanting in said human body;
said catheter having a proximal and a distal end;
said filter being permanently fixed to said distal end of said catheter;
a locating member adapted to be disposed subcutaneously for localizing said catheter through a skin surface of said human body after said catheter is implanted;
said locating member being fixed to said proximal end of said catheter;
said locating member comprising a sleeve enclosing an internal closing means;
said internal closing means being disposed at said proximal end of said catheter for closing thereof;
said sleeve having a central opening therethrough; and
said internal closing means comprising a plug engaged within said proximal end of said catheter through said central opening.
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Accused Products
Abstract
This device comprises an elastic guide wire onto which is fitted a semi-rigid tubular mandrel which is in turn fitted into a thin-walled tubular sheath. A catheter in the form of an easily divisible flexible tube has a distal end that permanently holds a blood filter. The catheter'"'"'s proximal end receives a locating member that can be confined under the skin of a patient to insure that no infection develops. After the filter is temporarily implanted, a removable strengthening cable can be inserted into the catheter to advance the filter along the sheath to a chosen position in a vein, in particular the inferior vena cava, of the patient. The locating member makes it easy to remove the filter whenever the risk of pulmonary embolism is no longer present.
335 Citations
5 Claims
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1. Apparatus to be removably implanted in a human body for filtering blood, which comprises;
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a filter adapted for filtering blood in a blood vessel; a divisible catheter adapted for implanting in said human body; said catheter having a proximal and a distal end; said filter being permanently fixed to said distal end of said catheter; a locating member adapted to be disposed subcutaneously for localizing said catheter through a skin surface of said human body after said catheter is implanted; said locating member being fixed to said proximal end of said catheter; said locating member comprising a sleeve enclosing an internal closing means; said internal closing means being disposed at said proximal end of said catheter for closing thereof; said sleeve having a central opening therethrough; and
said internal closing means comprising a plug engaged within said proximal end of said catheter through said central opening. - View Dependent Claims (2, 3, 4)
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5. Apparatus to be removably implanted in a human body for filtering blood, which comprises;
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a filter adapted for filtering blood in a blood vessel; a divisible catheter adapted for implanting in said human body up to said blood vessel; said catheter having a proximal and a distal end; said filter being permanently fixed to said distal end of said catheter which is closed by a plug means; a locating member adapted to be disposed subcutaneously for localizing said catheter through a skin surface of said human body after said catheter is implanted; said locating member being fixed to said proximal end of said catheter; said locating member comprising a sleeve having a central opening therethrough wherein said proximal end of said catheter is closely engaged for fixing said sleeve thereto;
said sleeve enclosing an internal closing means disposed at said proximal end of said catheter for closing thereof; andsaid internal closing means comprising a screw engaged within said proximal end of said catheter through said central opening of said sleeve.
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Specification