I claim:
1. A tool to manipulate an endless chain on a bicycle comprising:
an elongated central member having a near end and a far end;
a first open portion disposed at the far end;
a second open portion disposed at the near end;
said first and second portions sized to engage and manipulate said chain by movement of the central member.
2. The tool to manipulate an endless chain on a bicycle as claimed in 1 where said first open portion opens towards the near end to form a first puller and said second portion opens towards the far end to form a second puller.
3. The tool to manipulate an endless chain on a bicycle as claimed in 1 where said first portion opens towards the near end to form a puller and said second portion opens away from the far end to form a pusher.
4. The tool to manipulate an endless chain on a bicycle as claimed in 1 wherein said portions are substantially semi circular.
5. The tool to manipulate an endless chain on a bicycle as claimed in 2 where both open portions are aligned on the same plane.
6. The tool to manipulate an endless chain on a bicycle as claimed in 2 where said first portion is rotated 180 degrees about the central member from the second portion.
7. The tool to manipulate an endless chain on a bicycle as claimed in 3 where both open portions are on the same plane.
8. The tool to manipulate an endless chain on a bicycle as claimed in 3 where said first open portion is on a plane rotated 180 degrees from the plain of the second portion.
9. A tool to manipulate an endless chain on a bicycle comprising:
an elongated central member having a near end and a far end;
a first element disposed at the far end having an open portion;
a second element disposed at the near end having an open portion, said first and second elements sized to engage and pull said chain.
10. The tool to manipulate an endless chain on a bicycle as claimed in 9 where said portion of the first element opens towards said near end and said portion of the second element opens towards the near end.
11. The tool to manipulate an endless chain on a bicycle as claimed in 9 where said elements are on the same plane.
12. The tool to manipulate an endless chain on a bicycle as claimed in 9 where said first element on a plane rotated 180 degrees about the axis of the central member with respect to the second element.
13. The tool to manipulate an endless chain on a bicycle as claimed in 9 wherein said elements are substantially semi circular.
14. A method of making a tool to manipulate an endless chain on a bicycle comprising the steps of:
bending a far end of an elongated member into a curve to create a first opening;
bending a near end of the elongated member into a curve to create a second opening, each opening sized to engage and manipulate said chain.
15. The method of making a tool to manipulate an endless chain on a bicycle as described in claim 14 where the far end is bent so that the first opening faces the near end and the near end is bent so that the second opening faces the far end.
16. The method of making a tool to manipulate an endless chain on a bicycle as described in claim 14 where the far end is bent so that the first opening faces the near end and the near end is bent so that the second opening faces away from the far end.
17. The method of making a tool to manipulate an endless chain on a bicycle as described in claim 14 where said openings are bent in a semi circular fashion.
18. The method of making a tool to manipulate an endless chain on a bicycle as described in claim 14 where said openings are bent on the same plain.
19. The method of making a tool to manipulate an endless chain on a bicycle as described in claim 14 where said first opening is bent 180 about the axis of the elongated member with respect to the second opening.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An ostomy port comprising:
a waste channel configured to and positioned so that it extends through the abdominal wall and a valve for selectively blocking and unblocking said waste channel; wherein
said valve is positioned within said channel between and spaced from distal and proximal ends thereof, said distal end being deeper within the body than said proximal end;
said valve comprises a portion which, in an uncovered blocking configuration, blocks the channel and resists the pressure of waste pushing proximally;
said unblocks said channel upon distal deflection of said valve portion by pressing from a cover portion insertable to said channel from a proximal direction; and
said valve, in said blocking configuration, opens by deflection of said valve portion proximally when a pressure exerted in a proximal direction by waste content in said waste channel is higher than a predetermined safety threshold.
2. The ostomy port according to claim 1, wherein said valve comprises a shutter valve which is opened by axial force along said channel in a direction towards the body.
3. The ostomy port according to claim 2, wherein said valve comprises an expandable element.
4. The ostomy port according to claim 2, wherein said port includes one or both of a reservoir of fluid and a pump for causing inflation of a chamber associated with said expandable element.
5. The port according to claim 2, wherein said valve is automatically activated to unblock said channel when said channel is covered by a suitable cover or bag.
6. The ostomy port according to claim 2, wherein said valve comprises a plurality of flaps.
7. The ostomy port according to claim 6, wherein said valve comprises an expandable element.
8. The ostomy port according to claim 6, wherein said port includes one or both of a reservoir of fluid and a pump for causing inflation of a chamber associated with said expandable element.
9. The port according to claim 6, wherein said valve is automatically activated to unblock said channel when said channel is covered by a suitable cover or bag.
10. The ostomy port according to claim 1, wherein said valve comprises an expandable element.
11. The ostomy port according to claim 10, wherein said port includes one or both of a reservoir of fluid and a pump for causing inflation of a chamber associated with said expandable element.
12. The port according to claim 10, wherein said valve is automatically activated to unblock said channel when said channel is covered by a suitable cover or bag.
13. The ostomy port according to claim 10, wherein said port includes one or both of a reservoir of fluid and a pump for causing inflation of a chamber associated with said expandable element.
14. The port according to claim 13, wherein said valve is automatically activated to unblock said channel when said channel is covered by a suitable cover or bag.
15. The ostomy port according to claim 1, wherein said valve is configured to automatically block said channel when at least one of one of a cover and a bag on said channel and comprising said cover portion is removed.
16. The port according to claim 15, wherein said valve is automatically activated to unblock said channel when said channel is covered by a suitable cover or bag.
17. The ostomy port according to claim 15, wherein said at least one of a cover and a bag includes a tube comprised in said cover portion which, when inserted into said channel, opens said valve and, when removed form said channel, allows said valve to self-close.
18. The port according to claim 1, wherein said valve is automatically activated to unblock said channel when said channel is covered by a suitable cover or bag.
19. The ostomy port according to claim 1, comprising a manual actuator for at least one of opening and closing said valve.
20. The port according to claim 1, wherein said predetermined safety threshold is between 70 and 200 mmHg.
21. A method for regulating waste content flow through a waste channel configured to and positioned so that it extends through the abdominal wall in an ostomy port comprising:
closing a valve to block said channel in a valve configuration resisting the pressure of waste pushing proximally upon said valve;
uncovering a proximal opening of said channel;
allowing said pressure of waste pushing proximally upon said valve to increase; and
opening automatically said closed valve by deflection of a portion of said valve proximally upon pressure exerted in a proximal direction by said waste content in said waste channel being higher than a predetermined safety threshold;
wherein said closing a valve comprises automatically closing said valve by said uncovering;
wherein said port has a cover including an elongate element which maintains said valve in an open configuration when inserted in said channel, and wherein said uncovering retracts said elongate element and allows said valve to close; and
wherein said valve is positioned within said channel between and spaced from distal to proximal ends of the channel, said distal end deeper within the body than said proximal end.
22. The method according to claim 21, comprising attaching a bag or a cover to said port, said attaching automatically opening said valve.
23. The method according to claim 21, comprising manually closing said valve.
24. The method according to claim 21, comprising irrigating said waste channel.
25. An ostomy port having a waste channel configured to and positioned so that it extends through the abdominal wall comprising:
said valve is positioned within said channel between and spaced from distal and proximal ends thereof, said distal end being deeper within the body than said proximal end;
an inflatable section inside said waste channel, between and spaced from distal and proximal ends thereof, said distal end being deeper within the body than said proximal end, and said section being inflatable to a degree sufficient to block said channel and deflatable to a degree whereby it does not block or interfere with flow in said channel; and
an integral inflator configured for pumping to selectively inflate said inflatable section to block said channel
wherein said port includes a reservoir for holding inflation fluid for said inflatable section.
26. The port according to claim 25, comprising a stomal cover and wherein said inflator is provided in or on said stomal cover.
27. The port according to claim 25 including a check valve for regulating pressure in said inflatable section.
28. The port according to claim 27, wherein said check valve is suitable for deflation of said inflatable section.
29. The port according to claim 25, wherein said inflator comprises an air pump.
30. The port according to claim 25, comprising a deflation valve.
31. The port according to claim 25, wherein said inflator is electrically operated and activated by one or both of covering and uncovering of said port, using a covering or uncovering sensing circuit.
32. The port according to claim 25, including an indicator indicating one or both of when said channel is blocked and when said channel is open.
33. The port according to claim 32, wherein said indicator is a visual or acoustic display electrically activated by a sensing element which senses a state of said valve.
34. The port according to claim 25, wherein said inflator is electrically operated and includes a battery for powering said electrically operated inflator.