Catheter connection hub
Fluid communication to an end of a catheter is afforded through a connection hub selectively attachable thereto. The connection hub includes a catheter-receiving element and a fluid-coupling element that are relatively rotatable coaxially between one of two states by way of a determinant assembly feature. The first state is an unlocked state and the second state is a locked state. The unlocked state is for determinately receiving a catheter and the locked state is for determinately securing the catheter. A method of making a connection hub is also provided.
1. A connection hub having a determinant assembly feature for attaching a catheter, the connection hub comprising:
a catheter-receiving element configured to slidably admit a free end of a catheter, the catheter-receiving element comprising:
a catheter-receiving element actuation handle, comprising:
an outer end configured to slidably admit the free end of the catheter into the connection hub;
an abutment end opposite the outer end; and
a catheter passageway extending through the catheter-receiving element actuation handle between an access opening at the outer end thereof and an inner opening at the abutment end thereof;
a pair of resilient elongated, parallel clamping jaws projecting from the abutment end of the catheter-receiving element actuation handle on opposite sides of the inner opening to the catheter passageway, each of the clamping jaws terminating equidistant from the abutment end of the catheter-receiving element actuation handle in a respective clamp tip and an associated inner clamp-tip surface centrally traversed by an open-ended catheter accommodation recess aligned with the inner opening to the catheter passageway, the clamping jaws assuming an open condition thereof when free from the influence of external forces and a closed condition thereof when under the influence of external forces, in the open condition of the clamping jaws the inner clamp-tip surfaces on the clamping jaws being in a substantially spaced-apart facing relationship, and, in the closed condition of the clamping jaws, the clamping jaws being mutually inwardly resiliently deformed sufficiently to bring the inner clamp-tip surfaces into close proximity and to place the catheter accommodation recesses in aligned opposition;
a compressible sealing sleeve retained between the clamping jaws in the catheter accommodation recesses, in the open condition of the clamping jaws, the free end of the catheter entered into the catheter passage from the access opening being slidably receivable in the sealing sleeve from the inner opening to the catheter passageway, and, in the closed condition of the clamping jaws, the exterior of the free end of the catheter being gripped mechanically through the sealing sleeve by the catheter accommodation recesses and the sealing sleeve being urged by the clamping jaws into a fluid seal about the exterior of the free end of the catheter;
a fluid-coupling element configured to selectively effect fluid communication with the free end of the catheter when retentively attached thereto, the fluid-coupling element movably coupled to the catheter-receiving element for movement relative thereto between a catheter-capture condition and a
catheter-receiving condition, the fluid-coupling element further comprising:
a fluid-coupling element actuation handle, comprising:
an outer end configured to selectively effect fluid communication with the free end of the catheter when the free end of the catheter is attached to the connection hub; and
an abutment end opposite the outer end of the fluid-coupling element actuation handle, the abutment end of the fluid-coupling element actuation handle secured to the abutment end of the catheter-receiving element actuation handle and enabling relative rotation of the fluid-coupling element and the catheter-receiving element between a catheter-receiving condition of the connection hub, wherein the free end of the catheter is admittable into the connection hub and a catheter-capture condition of the connection hub, wherein the connection hub is attached to the free end of the catheter; and
a clamp-actuation socket, opening at a first end thereof on the abutment end of the fluid-coupling element actuation handle and communicating at the opposite second end thereof with the outer end of the coupling element, the clamp-actuation socket being configured to admit through the first end thereof the clamping jaws in the open condition thereof when the connection hub is in the catheter-receiving condition thereof, and the clamp-actuation socket being rotatable with the fluid-coupling element about the clamping jaws into the catheter-capture condition of the connection hub urging the clamping jaws into the closed condition thereof; and
a determinant assembly comprising at least one element restricting movement of the fluid-coupling element relative to the catheter-receiving element.
2. The connection hub of claim 1 , wherein the at least one element of the determinant assembly comprises a rotational engagement element and a rotational stop element cooperatively engaging the rotational engagement element, wherein the fluid-coupling element is secured rotatably to the catheter-receiving element.
3. The connection hub of claim 2 , wherein the rotational engagement element is disposed upon a planar interface surface of the fluid-coupling element adjacently opposed to another planar interface surface of the catheter-receiving element, and the rotational stop element is disposed upon the another planar interface surface of the catheter-receiving element.
4. The connection hub of claim 2 , wherein the rotational engagement element is disposed upon a planar interface surface of the catheter-receiving element adjacently opposed to another planar interface surface of the fluid-coupling element, and the rotational stop element is disposed upon the another planar interface surface of the fluid-coupling element.
5. The connection hub of claim 2 , wherein the rotational engagement element is an arch-shaped channel comprising two sidewalls and at least one end stop extending between the two sidewalls.
6. The connection hub of claim 5 , wherein the at least one end stop is configured to prevent rotational movement of the rotational stop element beyond the catheter-capture condition in a direction defined from the catheter-capture condition to the catheter-receiving condition.
7. The connection hub of claim 2 , wherein the rotational engagement element is a channel comprising first and second end stops, the first end stop configured to prevent rotational movement of the rotational stop element beyond the catheter-receiving condition in a direction defined from the catheter-capture condition to the catheter-receiving condition, and the second end stop configured to prevent rotational movement of the rotational stop element beyond the catheter-capture condition in a direction defined from the catheter-receiving condition to the catheter-capture condition.
8. The connection hub of claim 3 , wherein the rotational stop element is a stub extending from the another planar surface of the catheter-receiving element and having a cylindrically shaped surface.
9. The connection hub of claim 8 , wherein the stub is configured to prevent rotational movement of the rotational engagement element beyond the catheter-receiving condition in a direction defined from the catheter-capture condition to the catheter-receiving condition.
10. The connection hub of claim 8 , wherein the stub is configured to prevent rotational movement of the rotational engagement element beyond the catheter-receiving condition in a direction defined from the catheter-capture condition to the catheter-receiving condition and configured to prevent rotational movement of the rotational engagement element beyond the catheter-capture condition in a direction defined from the catheter-receiving condition to the catheter-capture condition.
11. The connection hub of claim 1 , wherein the determinant assembly comprises a rotational engagement element and a rotational stop element cooperatively engaging the rotational engagement element.
12. The connection hub of claim 11 , wherein the rotational engagement element extends into a planar interface surface of the catheter-receiving element, and the rotational stop element extends from a planar interface surface of the fluid-coupling element.
13. The connection hub of claim 11 , wherein the rotational engagement element comprises at least one end stop configured to prevent rotational movement of the rotational stop element beyond the catheter-receiving condition in a direction defined from the catheter-capture condition to the catheter-receiving condition.
14. The connection hub of claim 1 , wherein the at least one element of the determinant assembly comprises a rotational engagement element coupled to the catheter-receiving element, and a rotational stop element cooperatively engaging the rotational engagement element and coupled to the fluid-coupling element.
15. The connection hub of claim 14 , wherein the rotational engagement element extends into a planar interface surface of the catheter-receiving element and the rotational stop element extends from a planar interface surface of the fluid-coupling element.
16. The connection hub of claim 14 , wherein the rotational engagement element comprises at least one end stop configured to prevent rotational movement of the rotational stop element beyond the catheter-receiving condition in a direction defined from a catheter-capture condition to a catheter-receiving condition.
17. The connection hub of claim 14 , wherein the rotational engagement element is a channel comprising two end stops, the first end stop configured to prevent rotational movement of the rotational stop element beyond the catheter-receiving condition in a direction defined from a catheter-capture condition to a catheter-receiving condition, and the second end stop configured to prevent rotational movement of the rotational stop element beyond the catheter-capture condition in a direction defined from the catheter-receiving condition to the catheter-capture condition.
18. A method of making the connection hub of claim 1 having a determinant assembly feature for attaching a catheter, the method comprising:
forming the catheter-receiving element configured to slidably admit a free end of a catheter and having a first portion of the determinant assembly;
forming the fluid-coupling element configured to selectively effect fluid communication with the free end of the catheter when retentively attached thereto and having a second portion of the determinant assembly; and
rotatably securing the fluid-coupling element to the catheter-receiving element for movement relative thereto between the catheter-receiving condition and the catheter-capture condition.
19. The method of claim 18 , further comprising forming the first portion of the determinant assembly to comprise a rotational engagement element, and forming the second portion of the determinant assembly to comprise a rotational stop element cooperatively engaging the rotational engagement element.
20. A method of connecting a free end of a catheter to the connection hub of claim 1 , the method comprising:
receiving the free end of the catheter slidably into the catheter-receiving element configured to admit the free end of the catheter therein in the catheter-receiving condition, the catheter-receiving element having a first portion of the determinant assembly and rotatably securable to the fluid-coupling element for movement relative thereto between the catheter-receiving condition and the catheter-capture condition, the fluid-coupling element having a second portion of the determinant assembly; and
securing the fluid-coupling element relative to the catheter-receiving element into the catheter-capture condition to effect fluid communication with the free end of the catheter.
21. A method of utilizing a connection hub for connecting the free end of a catheter thereto, wherein the method comprises utilizing the connection hub of claim 1 .