Pre-loaded lockable stimulating catheter for delivery of anaesthetic drugs
First Claim
1. An anaesthetic drug delivery device comprising:
- a. a needle assembly including a needle having a proximal end and a distal end, a central bore extending between the proximal end and the distal end, said distal end having a sharp distal tip, and the needle assembly further comprising a needle hub including a distal portion connected to the proximal end of the needle;
i. the needle hub further comprising a central bore along the entire length thereof;
b. a releasable catheter lock having a locked position and an unlocked position, attached to and extending proximally from a proximal portion of the needle hub, the catheter lock including a central bore extending the entire length of the catheter lock; and
c. a catheter having a portion pre-loaded through the central bore of the needle or needle hub and including a proximal end, a distal end, a central bore along the entire length of the catheter and an electrical conductor extending from the proximal end to the distal end of the catheter to an electrically conductive distal tip of the catheter, the distal end of the catheter being disposed in the central bore of the catheter lock and extending into the needle hub;
wherein the catheter lock releasably holds the catheter in a position within the central bore of the catheter lock such that the electrically conductive distal tip of the catheter is in electrical contact with an inner surface of the needle.
11 Assignments
0 Petitions
Accused Products
Abstract
A stimulating needle and catheter system, including components, is provided such that the position of the stimulating needle or the stimulating catheter may be identified after insertion into the body of a patient by electrically stimulating and thus locating a specific nerve. Use of the needle and catheter system is eased by providing the system to the medical practitioner in a unitary structure. That is, the needle and catheter are connected by a catheter lock. The catheter lock is attached to the hub of the needle and can be actuated to either firmly grip the catheter or allow the catheter to move axially with respect to the lock and needle assembly. Thus, supplying the catheter to the practitioner already locked into the catheter lock allows the practitioner to insert the needle into the patient and, when ready, release the catheter for disposal through the needle into the patient. This and other disclosed features allow the medical practitioner to focus attention on the medical procedure.
-
Citations
30 Claims
-
1. An anaesthetic drug delivery device comprising:
-
a. a needle assembly including a needle having a proximal end and a distal end, a central bore extending between the proximal end and the distal end, said distal end having a sharp distal tip, and the needle assembly further comprising a needle hub including a distal portion connected to the proximal end of the needle; i. the needle hub further comprising a central bore along the entire length thereof; b. a releasable catheter lock having a locked position and an unlocked position, attached to and extending proximally from a proximal portion of the needle hub, the catheter lock including a central bore extending the entire length of the catheter lock; and c. a catheter having a portion pre-loaded through the central bore of the needle or needle hub and including a proximal end, a distal end, a central bore along the entire length of the catheter and an electrical conductor extending from the proximal end to the distal end of the catheter to an electrically conductive distal tip of the catheter, the distal end of the catheter being disposed in the central bore of the catheter lock and extending into the needle hub; wherein the catheter lock releasably holds the catheter in a position within the central bore of the catheter lock such that the electrically conductive distal tip of the catheter is in electrical contact with an inner surface of the needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An anaesthetic drug delivery device comprising:
-
a. a needle having a central bore, a distal end, a proximal end, and a hub disposed over the proximal end; b. a catheter having a distal end, a proximal end, a central bore and an electrical conductor extending from the distal end to the proximal end of the catheter; c. a releasable catheter lock comprising; i. a connection portion that attaches the catheter lock to the needle hub; ii. a housing comprising a central bore; iii. a clamping mechanism which is actuatable between a locked position and an unlocked position; wherein the releasable catheter lock is connected to and extends proximally from a proximal end of the needle hub by way of the connection portion of the catheter lock; wherein a distal portion of the catheter is pre-loaded and disposed in the central bore of the housing and, in the locked position, is clamped in place by the clamping mechanism; and wherein the catheter is clamped in place by the clamping mechanism such that an electrically conductive tip portion of the catheter electrical conductor adjacent the distal end of the catheter makes electrical contact with an inside surface the needle. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. An anaesthetic drug delivery device comprising:
-
a. a needle assembly comprising; i. a needle including a central bore, a distal end, a proximal end and a sharp distal tip; ii. a hub including a distal end, a proximal end, and a central bore extending from the distal end to the proximal end;
the proximal end of the hub being disposed closely about and rigidly holding the proximal end of the needle;
the central bore defining a flash chamber inside the hub;
the proximal end of the needle extending into the flash chamber and the proximal end of the needle having one or more holes connecting the central bore of the needle with the flash chamber;
the hub further comprising an translucent or semi-translucent portion between the exterior of the hub and the flash chamber;b. a catheter lock attached to and extending proximally from the proximal end of the hub, the catheter lock including a central bore extending the entire length of the catheter lock, from a catheter lock proximal end to a catheter lock distal end; and c. a catheter having a portion pre-loaded through the central bore of the needle and including a proximal end, a distal end, a central bore along the entire length of the catheter and an electrical conductor extending from the proximal end to the distal end of the catheter to an electrically conductive catheter tip, the distal end of the catheter being disposed through the central bore of the catheter lock; wherein the catheter lock locks the catheter in place such that the electrically conductive catheter tip of the catheter electrical conductor at the distal end of the catheter makes electrical contact with an inside surface of the needle. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
-
Specification