RU2000121959A - CONNECTING DEVICE FOR MEDICAL CANULA - Google Patents

Claims (18)

1. A connecting device for a medical cannula containing a female member (1) having a socket (11), a male member (2) having a centering protrusion (20) that engages in a tight fit into the socket (11), a cap (21) attached to one element and able to rotate into engagement with another element to secure the centering protrusion, preventing disengagement from the socket, and a locking device for fixing the cap (21), preventing it from rotating in the direction of uncoupling from another element, characterized in that the locking device comprises an outer spline means (45) on the male element (2) and a control element (15) having a complementary spline means on its inner surface and configured to move on the female element to bring the spline means into engagement, and thus to fix the cap (21), preventing its rotation in the direction of disengagement.  2. The connecting device according to claim 1, in which the outer spline means (45) is made on the cap (21).  3. The connecting device according to claim 1 or 2, in which the control element (15) comprises a sleeve (44) with an internal spline means made on its inner peripheral surface.  4. The connecting device according to any one of paragraphs. 1-3, in which the outer spline means and / or inner spline means contain a series of evenly distributed slots.  5. The connecting device according to claim 1, in which the cap (21) is permanently mounted on the male element (2) and has external splines, and the control element (15) contains a sleeve (44) with internal splines for engagement with the splined cap.  6. The connecting device according to claim 5, in which the control element (15) is made to rotate at a limited angle substantially less than a full revolution to align the splines during the entry of the control element (15) into engagement with the cap (21).  7. The connecting device according to claim 6, in which the ends of the slots are profiled to automatically implement the necessary rotation of the control element (15) to enable the locking engagement of the control element (15) with the cap (21).  8. The connecting device according to any one of paragraphs. 1-7, in which the female member comprises a valve having a valve control member configured to move.  9. The connecting device according to claim 8, wherein the axial movement of the valve control to open the valve engages the locking device.  10. Covered connecting element for attaching a medical cannula, containing a centering protrusion (20) for tight fit engagement in the socket of the female connecting element, a cap (21) with an internal screw thread, attached to the centering protrusion for threaded connection with the female element for fixing the centering protrusion (20), preventing disengagement from the socket, characterized in that on the cap an external spline means (45) is made for engaging with the fixing part of the female element for fixing the cap against rotation in the disengagement direction.  11. The male connector according to claim 10, wherein the outer spline means comprises a series of splines (45) evenly distributed around the outer peripheral surface of the cap.  12. A female connector for attaching a medical cannula comprising a socket (11) in a sleeve (4) for receiving a centering protrusion of a male member that engages in a clutch in it tightly, and means (10) on a sleeve (4) included in the clutch with a cap of the male element provided with internal screw thread for securing the centering protrusion against disengagement from the socket (11), characterized in that the control element (15), movable relative to the sleeve, contains a sleeve (44) equipped with an internal spline medium stvom for coupling with a complementary spline means (45) formed on the outer surface of the cap of the male member, for fixing the cap against rotation in the disengagement direction.  13. The female connector according to claim 12, wherein the inner spline means comprises a series of splines evenly distributed around the inner peripheral surface of the sleeve (44).  14. A group or series of medical connecting devices for use with catheters designed for different applications to the patient, each connecting device from a group or series of connecting devices contains a female member (1) having a socket (11), a male member (2), having a centering protrusion (20) for engagement on a tight fit in the socket (11), a cap (21) made on one element and providing, during rotation, an engagement with another element for fixing the centering protrusion against disengaged from the socket, and a locking device for fixing the cap (21) against rotation in the direction of disengagement, characterized in that each connecting device in a series or group of connecting devices has complementary spline means (44, 45) on the male and female elements made with the possibility of preventing the functional connection of the male or female element with the respectively female or male element of any other connecting device in the group or with Rhee connecting elements.  15. The group or series of connecting devices according to claim 14, in which the locking devices of the connecting devices are made different to prevent the functional connection of the male and female elements of the respective connecting devices with each other.  16. A group or series of connecting devices according to claim 15, in which the locking device of each connecting device comprises a control element (15) with spline means (44) entering the clutch and emerging from it with complementary spline means (45) on the cap (21 ), while the spline means are made to prevent the spline means (44) on the control element from entering into functional engagement with the spline means (45) on the cap (21) of another connecting device in a group or series of connecting devices.  17. A group or series of connecting devices according to any one of paragraphs. 14-16, in which the male centering protrusion and female socket of each of the connecting devices are different in size and / or shape from the male centering protrusion and female socket of other connecting devices.  18. A group or series of connecting devices according to any one of paragraphs. 14-16, in which each connecting device is made according to any one of paragraphs. 1-9.