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Catheter placement units

  • US 5,562,633 A
  • Filed: 03/25/1994
  • Issued: 10/08/1996
  • Est. Priority Date: 09/25/1991
  • Status: Expired due to Fees
First Claim
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1. A catheter placement unit comprising a catheter (4) having an axial bore, a catheter hub (5) at one end of the catheter (4), an introducing needle (2) having a pointed tip (6) for introducing the catheter (4) into a desired position in a patient'"'"'s body, a needle hub (3) at the end of the needle (2) remote from the tip (6) for mounting the needle (2) so that it extends through the catheter bore for introduction of the catheter into the patient'"'"'s body and so that it can subsequently be withdrawn from the catheter bore leaving the catheter in position in the patient'"'"'s body, and a needle tip protector (10) on the needle (2) for shielding the needle tip (6) when the needle has been withdrawn from the catheter bore, the needle tip protector (10) including a guard element (14) which is held against a resilient bias in a cocked position to one side of the catheter (4) while the catheter is introduced into the patient'"'"'s body and which, on subsequent withdrawal of the needle (2) from the catheter bore, moves laterally by resilient action from the cocked position into a guard position shielding the needle tip (6), the needle tip protector (10) obstructing movement of the catheter hub (5) along the needle (2) so as to prevent separation of the catheter (4) from the needle tip protector (10) until the needle (2) has been withdrawn from the catheter bore so as to thereafter trigger shielding of the needle tip (6).

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