Implantable flow connector

1. A method of implanting and securing an implantable flow connector in a body of a patient for providing communication of a first space within the body of the patient with a second space within the body of the patient, the method comprising:

providing a flow connector having a longitudinally extending wall forming a conduit having a longitudinally extending lumen within the longitudinally extending wall and having a first orifice at a distal portion and a second orifice at a proximal portion for inflow and outflow between the orifices;

providing a retention device having a proximal portion and a distal portion, the retention device having a first set of engaging elements with penetrating tips;

inserting a section of the retention device into the first space within the body;

subsequently inserting the flow connector through an opening in the retention device so the proximal portion of the flow connector extends into the first space within the body; and

placing the second space within the body over the retention device so the second space within the body overlaps and extends along the longitudinally extending wall of the flow connector and flow continues through the lumen of the conduit of the flow connector.

2. The method of claim 1 , wherein the step of inserting the retention device into the first space within the body comprises compressing the retention device to reduce an outer diameter of the retention device.

3. The method of claim 1 , wherein the step of inserting the retention device includes placing the retention device in a delivery cannula wherein it is compressed and then releasing the retention device from the cannula so it returns to a non-compressed position.

4. The method of claim 1 , wherein the tips penetrate the first space within the body when the section of the retention device is in a placement position within the first space within the body.

5. The method of claim 1 , wherein the retention device has a second set of engaging elements with penetrating tips, the penetrating tips penetrating a wall of the second space within the body when the second space within the body is in a placement position over the retention device.

6. The method of claim 4 , wherein the retention device has a second set of engaging elements with penetrating tips, the penetrating tips penetrating a wall of the second space within the body when the second space within the body is in a placement position over the retention device.

7. The method of claim 1 , wherein the proximal portion of the flow connector includes a flange extending radially from the conduit of the connector, the flange engaging an inner wall of the first space within the body and extending laterally on both sides of the conduit.

8. The method of claim 1 , wherein the distal portion of the retention device includes a first component and the proximal portion of the retention device includes a second component, and the method further includes the step of moving the first component in a longitudinal direction toward the second component to interlock the first and second components.

9. The method of claim 8 , wherein the second component engages the first space within the body and the first component engages the second space within the body.

10. The method of claim 8 , wherein one of the first and second components has at least one locking tab and the other component has at least one slot, and the step of interlocking the components includes the step of causing the at least one locking tab to lockingly engage the at least one slot.

11. The method of claim 1 , wherein the step of inserting the flow connector through an opening in the retention device includes the step of placing the flow connector in a reduced profile position within a delivery member and inserting the delivery member through the opening in the retention device.

12. The method of claim 1 , wherein the first space within the body is a source body space and the proximal portion of the flow connector is inserted through an opening formed in a tissue wall of the source body space, and the second space within the body is a destination element and the distal portion of the flow connector is insertable into the destination element through an opening in a surface of the destination element.

13. The method of claim 1 , wherein the retention device provides a sutureless connection of the flow connector to the first and second spaces within the body.

14. The method of claim 4 , further comprising the step of pulling the retention device and flow connector distally so the first set of engaging members penetrate a wall of the first space within the body.

15. The method of claim 8 , wherein the step of interlocking the first and second components includes the step of releasingly interlocking the first and second components so the first and second components can be disengaged.

16. The method of claim 15 , wherein the first and second components are disengaged by movement in a direction opposite a direction of movement to interlock the first and second components.

17. The method of claim 9 , wherein the second space within the body is placed over the first component prior to the step of interlocking the first and second components.

18. The method of claim 9 , wherein the first component has a longitudinal axis and is slid in a longitudinal direction over the second component to interlock the first and second components.

19. The method of claim 18 , wherein the step of interlocking the first and second components includes the step of engaging a tab of one component with a slot of the other component.

20. The method of claim 8 , wherein the first component is a separate component from the second component such that the first and second components are not attached prior to interlocking of the first and second components.

21. The method of claim 1 , wherein the second orifice is in fluid communication with the first space within the body and the first orifice is in fluid communication with the second space within the body, and the connector includes a flange extending radially from the conduit adjacent the first orifice.

22. The method of claim 1 , wherein the retention device has an elongated portion surrounding the conduit.