Two-part medical pressure transducer with diaphragm stand-offs

• US 5,868,678 A
• Filed: 12/02/1996
• Issued: 02/09/1999
• Est. Priority Date: 06/30/1993
• Status: Expired due to Term

• Current Assignee: Medex Incorporated (Smiths Group International Holdings Ltd.)
• Original Assignee: Medex Incorporated (Smiths Group International Holdings Ltd.)
• Inventors: Patzer, Charles R., Brunner, Glenn D., Shah, Nilesh M.
• Primary Examiner(s): Nasser, Robert L.
• Application Number:
  US08/759,303
• Time in Patent Office: 799 Days
• Field of Search: 600/486, 600/488, 600/561, 73/706, 73/756
• US Class Current: 600/486
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 5/1413 Modular systems comprising interconnecting elements
• CPC Class Codes: A61M 5/16854 by monitoring line pressure
• CPC Class Codes: F16M 11/041 Allowing quick release of the apparatus
• CPC Class Codes: F16M 11/16 Details concerning attachment of head-supporting legs, with or without actuation of locking members thereof
• CPC Class Codes: F16M 11/22 with approximately constant height, e.g. with constant length of column or of legs F16M11/42 takes precedence
• CPC Class Codes: F16M 13/005 integral with the apparatus or articles to be supported
• CPC Class Codes: F16M 13/02 for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
• CPC Class Codes: G01L 19/0023 for flowthrough systems having a flexible pressure transmitting element

Abstract

A medical pressure transducer includes a reusable component with channels to either side of a reusable diaphragm, and a disposable dome with mounting wings to either side of a disposable diaphragm and slidably receivable in the channels to mount the dome with the diaphragms in confronting relationship. Stand-off bumps are provided on the wings which cooperate with support surfaces on the reusable component in the channel to keep the dome and reusable diaphragms sufficiently spaced apart as to minimize deleterious wear thereon when the dome and reusable component are put together and/or taken apart. Dimples may be provided in the support surface to receive the bumps when the diaphragms are in confronting relationship and no longer need to be spaced sufficiently apart. Camming ramps are provided in the channels and on the wings by which to drive the dome diaphragm into the reusable diaphragm.

Claims

1. A medical pressure transducer disposable dome for use with a reusable component having a pressure sensor and diaphragm in pressure communication with said sensor and having at least one channel member disposed to one side of said reusable component diaphragm, the disposable dome comprising:

a fluid path adapted to be coupled to a patient;

a diaphragm coupled to the fluid path; and

at least one mounting wing having a free end disposed to extend laterally outwardly from the dome to one side of the dome diaphragm and being configured to slidably engage into said reusable component channel without substantial rotation of the dome relative to said reusable component wherein to bring the dome diaphragm into confronting relationship with said reusable component diaphragm upon sliding the dome wing into said channel, the disposable dome further comprising stand-off means associated with the dome wing for maintaining sufficient separation between the dome diaphragm and said reusable component diaphragm as the dome wing is slid into said channel.

2. The disposable dome of claim 1, the stand-off means including a projection having a distal end extending to at least a plane defined by the dome diaphragm.

3. The disposable dome of claim 2, wherein the distal end of the projection extends beyond the dome diaphragm plane.

4. The disposable dome of claim 1, the stand-off means including a bump carried on an underside of the mounting wing.

5. The disposable dome of claim 1, the stand-off means including a pair of spaced-apart projections each having a distal end extending to at least a plane defined by the dome diaphragm.

6. The disposable dome of claim 5, wherein the distal ends of the projections extend beyond the dome diaphragm.

7. The disposable dome of claim 1, the stand-off means including a pair of spaced-apart bumps carried on an underside of the mounting wing.

8. The disposable dome of claim 1 further comprising a second mounting wing disposed to an opposite side of the dome diaphragm and second stand-off means associated with the second dome wing for maintaining said sufficient separation.

9. A medical pressure transducer disposable dome comprising:

a fluid path adapted to be coupled to a patient;

a diaphragm coupled to the fluid path;

a pair of mounting wings extending laterally outwardly from the dome to opposite sides of the diaphragm; and

a plurality of spacing bumps carried on the undersides of the mounting wings.

10. The transducer of claim 9 wherein each mounting wing carries two of the bumps, the bumps on each mounting wing being spaced apart along the associated wing.

11. A medical pressure transducer disposable dome for use with a reusable component having a pressure sensor and diaphragm in pressure communication with said sensor and having at least one channel member, the disposable dome comprising:

a fluid path adapted to be coupled to a patient;

a diaphragm coupled to the fluid path; and

at least one mounting wing having a free end extending laterally outwardly from the dome and being configured to slidably engage into said reusable component channel wherein to bring the dome diaphragm into confronting relationship with said reusable component diaphragm upon sliding the dome wing into said channel, the disposable dome further comprising a rigid projection situated to maintain separation between the dome diaphragm and said reusable component diaphragm as the dome wing is slid into said channel.

12. The disposable dome of claim 11, the projection being rigidly connected to the mounting wing.

13. A medical pressure transducer disposable dome for use with a reusable component having a pressure sensor and diaphragm in pressure communication with said sensor and having at least one channel member, the disposable dome comprising:

a fluid path adapted to be coupled to a patient;

a diaphragm coupled to the fluid path; and

at least one mounting wing being configured to slidably engage into said reusable component channel whereby to bring the dome diaphragm into confronting relationship with said reusable component diaphragm upon sliding the dome wing into said channel, the disposable dome further comprising a rigid projection situated to maintain separation between the dome diaphragm and said reusable component diaphragm as the dome wing is slid into said channel, the mounting wing and projection extending in perpendicular directions relative one another.

14. A medical pressure transducer comprising:

a reusable component having a pressure sensor and a diaphragm in pressure communication with the sensor, the reusable component further having at least one channel member; and

a disposable dome having a fluid path adapted to be coupled to a patient, a diaphragm coupled to the fluid path, and at least one mounting wing, the mounting wing and channel member being configured to slidably engage together without relative rotation between the dome and the reusable component wherein to bring the dome diaphragm into confronting relationship with the reusable component diaphragm upon sliding the dome wing into the channel, the disposable dome further comprising stand-off means associated with the dome wing for maintaining separation between the dome diaphragm and the reusable component diaphragm as the dome wing is slid into the channel.

15. The transducer of claim 14, the disposable dome stand-off means including a projection having a distal end extending to at least a plane defined by the dome diaphragm.

16. The transducer of claim 15, wherein the distal end of the projection extends beyond the dome diaphragm plane.

17. The transducer of claim 14, the disposable dome stand-off means including a bump carried on an underside of the mounting wing.

18. The transducer of claim 14, the disposable dome stand-off means including a pair of spaced-apart projections each having a distal end extending to at least a plane defined by the dome diaphragm.

19. The transducer of claim 18, wherein the distal ends of the projections extend beyond the dome diaphragm plane.

20. The transducer of claim 14, the stand-off means including a pair of spaced apart bumps carried on an underside of the mounting wing.

21. The transducer of claim 14, the channel being disposed to one side of the reusable component diaphragm and the mounting wing being disposed to one side of the dome diaphragm.

22. A medical pressure transducer comprising:

a reusable component having a pressure sensor and a diaphragm in pressure communication with the sensor, the reusable component further having at least one channel member; and

a disposable dome component having a fluid path adapted to be coupled to a patient, a diaphragm coupled to the fluid path, and at least one mounting wing, the mounting wing and channel member being configured to slidably engage together without relative rotation between the dome and the reusable components wherein to bring the dome diaphragm into confronting relationship with the reusable component diaphragm upon sliding the dome wing into the channel;

the reusable component and disposable dome component including cooperating means for maintaining separation between the dome diaphragm and the reusable component diaphragm as the dome wing is slid into the channel and for situating the dome diaphragm against the reusable component diaphragm as the diaphragms are slid into confronting relationship.

23. The transducer of claim 22, wherein the cooperating means includes (i) a projection associated with one of the components;

and (ii) a support surface of the other one of the components.

24. The transducer of claim 23, the cooperating means further including recess means associated with the component having the support surface for receiving the projection as the diaphragms are slid into confronting relationship.

25. The transducer of claim 24, the recess means being defined in the support surface.

26. The transducer of claim 24, wherein the recess means is defined by a teardrop-shaped dimple.

27. The transducer of claim 23 wherein the projection is carried on an underside of the disposable dome component mounting wing and the support surface is defined within the channel of the reusable component.

28. The transducer of claim 27, the cooperating means further including recess means within the channel for receiving the projection as the diaphragms are slid into confronting relationship.

29. The transducer of claim 28, the recess means being defined in the support surface.

30. The transducer of claim 28 wherein the recess means is defined by a teardrop-shaped dimple.

31. The transducer of claim 23 wherein the cooperating means includes a bump carried on an underside of the dome component mounting wing and a support surface of the reusable component within the channel.

32. The transducer of claim 23, the cooperating means further including recess means within the channel for receiving the bump as the diaphragms are slid into confronting relationship.

33. The transducer of claim 32 wherein the recess means defines a dimple.

34. The transducer of claim 33, the recess means being defined in the support surface.

35. The transducer of claim 33, the dimple being teardrop-shaped.

36. The transducer of claim 22, the channel being disposed to one side of the reusable component diaphragm and the mounting wing being disposed to one side of the dome diaphragm.

37. A reusable medical pressure transducer component having a pressure sensor and a diaphragm in pressure communication with the sensor, the reusable component further having at least one channel member disposed to one side of the reusable component diaphragm and recess means for receiving a stand-off projection of a disposable dome when a diaphragm of said dome is in confronting relationship to the reusable component diaphragm.

38. The reusable component of claim 37, the recess means defining a dimple.

39. The reusable component of claim 38, the dimple being teardrop-shaped.

40. The reusable component of claim 37, further comprising a second channel member disposed to an opposite side of the reusable component diaphragm and second recess means for receiving a second stand-off projection of said disposable dome.

41. A method of mounting a disposable dome to a reusable sensor wherein the dome includes a fluid path adapted to be coupled to a patient and a diaphragm coupled to the fluid path and the reusable sensor includes a diaphragm in pressure communication therewith, the method comprising:

with the diaphragms spaced apart, sliding the dome and sensor relative to one another along a generally straight line from a position where the diaphragms are not in confronting relationship towards a substantially full confronting relationship;

continuing to slide the dome and sensor relative to one another along the generally straight line so as to bring the diaphragms into substantially full confronting relationship; and

causing the diaphragms to be in contact with one another when in the substantially full confronting relationship.

42. The method of claim 41 wherein the diaphragms are caused to come into contact with one another as they are brought into the substantially fully confronting relationship.