Combined spinal epidural device
First Claim
Patent Images
1. A needle joinder kit, comprising:
- a first needle having an inner lumen;
a second needle having an inner lumen and an outer diameter that is smaller than the inner diameter of the inner lumen of the first needle; and
an adapter element adapted to facilitate connection and stabilization of the second needle within the first needle, the adapter element havinga housing with distal and proximal ends,an internal channel, disposed within the housing, having an inner diameter that decreases in the direction from the proximal to the distal end, the distal end of the internal channel being matable with the first needle, anda cover associated with the proximal end of the housing of the adapter element, adjacent to the internal channel, through which the second needle is inserted to traverse the internal channel and the lumen of the first needle;
the cover including a puncturable membrane for providing positional stability to the second needle when the second needle is inserted into the internal channel.
2 Assignments
0 Petitions
Accused Products
Abstract
An adapter element joins and stabilizes cooperating needle sets, such as epidural and spinal needles. The adapter element is particularly useful in combined spinal epidural anesthesia delivery techniques in which the adapter element is mated to the proximal portion of an epidural needle and a spinal needle can be inserted through and supported by an internal channel formed within the adapter element.
40 Citations
12 Claims
-
1. A needle joinder kit, comprising:
-
a first needle having an inner lumen; a second needle having an inner lumen and an outer diameter that is smaller than the inner diameter of the inner lumen of the first needle; and an adapter element adapted to facilitate connection and stabilization of the second needle within the first needle, the adapter element having a housing with distal and proximal ends, an internal channel, disposed within the housing, having an inner diameter that decreases in the direction from the proximal to the distal end, the distal end of the internal channel being matable with the first needle, and a cover associated with the proximal end of the housing of the adapter element, adjacent to the internal channel, through which the second needle is inserted to traverse the internal channel and the lumen of the first needle; the cover including a puncturable membrane for providing positional stability to the second needle when the second needle is inserted into the internal channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A needle assembly, comprising:
-
an outer needle having a proximal hub and defining an internal channel; a housing including a cover, the housing being attachable to the outer needle; and an inner needle extending through a puncturable membrane and slidably disposable within the internal channel, the puncturable membrane configured to engage an outer surface of the inner needle to stabilize the inner needle and affixed to a proximal end of the housing such that it provides a barrier through which the inner needle must pass, thereby acting as a constraint on the inner needle to reduce inadvertent displacement or movement of the inner needle.
-
-
12. A needle joinder kit, comprising:
-
a first needle having an inner lumen; a second needle having an inner lumen and an outer diameter that is smaller than the inner diameter of the inner lumen of the first needle; and an adapter element adapted to facilitate connection and stabilization of the second needle within the first needle, the adapter element having a housing with distal and proximal ends, an internal channel disposed within the housing, and a membrane element associated with the proximal end of the housing of the adapter element, adjacent to the internal channel, through which the second needle is inserted to traverse the internal channel and the lumen of the first needle, the membrane element being adapted to stabilize the second needle.
-
Specification