Modular wound treatment apparatus with releasable clip connection

• US 8,622,981 B2
• Filed: 06/27/2008
• Issued: 01/07/2014
• Est. Priority Date: 07/02/2007
• Status: Active Grant

• Current Assignee: Smith & Nephew PLC
• Original Assignee: Smith & Nephew PLC
• Inventors: Hartwell, Edward, Saxby, Carl
• Primary Examiner(s): Zalukaeva, Tatyana
• Assistant Examiner(s): TREYGER, ILYA Y
• Application Number:
  US12/667,227
• Publication Number:
  US 20100185164A1
• Time in Patent Office: 2,020 Days
• Field of Search: 604/317, 604/319, 604/320, 604/321, 604/322, 604/323
• US Class Current: 604/313
• CPC Class Codes: A61M 1/60 Containers for suction drainage, adapted to be used with an external suction source containers not adapted for subjection to vacuum A61M1/69
• CPC Class Codes: A61M 1/63 with means for emptying the suction container, e.g. by interrupting suction
• CPC Class Codes: A61M 1/732 Visual indicating means for vacuum pressure
• CPC Class Codes: A61M 1/734 Visual indicating means for flow
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• CPC Class Codes: A61M 1/784 by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
• CPC Class Codes: A61M 1/882 Draining devices provided with means for releasing antimicrobial or gelation agents in the drained fluid
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/96 Suction control thereof
• CPC Class Codes: A61M 1/982 with means for detecting level of collected exudate
• CPC Class Codes: A61M 2205/21 insensitive to tilting or inclination, e.g. spill-over prevention
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site
• CPC Class Codes: A61M 2205/3379 Masses, volumes, levels of fluids in reservoirs, flow rates
• CPC Class Codes: A61M 2205/75 with filters
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 2205/8262 connectable to external power source, e.g. connecting to automobile battery through the cigarette lighter

Abstract

Apparatus (200) for the application of topical negative pressure therapy to a user of the apparatus (200) is described together with a method for protecting said apparatus (200) when subjected to abnormal stresses, the apparatus (200) comprising a device (202) and a waste canister (204) releasably connected thereto wherein the device (202) and waste canister (204) are connected together by clip means (222), said clip means (222) being subject to failure upon application of abnormal stresses thereby permitting separation of the device (202) and waste canister (204).

Claims

1. An apparatus for the application of topical negative pressure therapy to a user of the apparatus, the apparatus comprising:

a device;

a waste canister releasably connected to the device; and

one or more clip members configured to extend between the device and the waste canister and to releasably connect the device to the waste canister;

wherein;

the one or more clip members each have a first engagement element configured to disengageably couple with the device and a second engagement element configured to disengageably couple with the canister; and

the clip members are configured to fail in the event of application of an abnormal force to the apparatus.

2. An apparatus according to claim 1, wherein the first engagement element is positioned at or adjacent to a first end portion of at least one of the clip members and the second engagement element is positioned at a second end portion at least one of the clip members.

3. An apparatus according to claim 2, wherein said clip members comprise a metal or plastic, such as polyoxymethylene (POM) acetal polymer.

4. An apparatus according to claim 2, wherein said clip members comprise grip strips to assist the user in engaging said waste canister to said device.

5. An apparatus according to claim 1, wherein

the apparatus comprises a shaft member attached to the canister;

and

the second engagement element comprises a resiliently deformable C-shaped recess engageable with the shaft member.

6. An apparatus according claim 1, wherein the clip members are able to withstand a pulling force tending to separate the device and waste canister of at least 20N.

7. An apparatus according to claim 6, wherein the pulling force is about 40N.

8. An apparatus according to claim 6, wherein the pulling force is about 100N.

9. An apparatus according to claim 1, wherein the abnormal force is a force in excess of 100N.

10. An apparatus according to claim 1, wherein said apparatus comprises an alarm that is activated when various abnormal conditions apply.

11. An apparatus according to claim 1, wherein said one or more clip members are releasably attached to the device.

12. An apparatus according to claim 1, wherein said apparatus is portable and further comprises a carry case.

13. An apparatus for the application of topical negative pressure therapy to a user of the apparatus, the apparatus comprising:

a device and a waste canister releasably connected thereto;

wherein;

the device and waste canister are connected together by one or more clip members configured to extend between the device and the waste canister;

the clip members are configured to fail in the event of application of an abnormal force to the apparatus; and

the disengagable feature at the device end is an inwardly turned resiliently deformable finger portion on the clip member which engages with a tooth portion on the device.

14. An apparatus according to claim 13, wherein the finger portion and tooth portion have co-operating inclined surfaces to assist engagement and disengagement between the finger and tooth portions.

15. An apparatus according to claim 13, wherein the clip members are able to withstand a pulling force tending to separate the device and waste canister of at least 20N.

16. An apparatus according to claim 15, wherein the clip members are able to withstand a pulling force tending to separate the device and waste canister of about 40N.

17. An apparatus according to claim 13, wherein said clip members comprise a metal or plastic, such as polyoxymethylene (POM) acetal polymer.

18. An apparatus according to claim 13, wherein said clip members comprise grip strips to assist the user in engaging said waste canister to said device.

19. An apparatus according to claim 13, wherein said apparatus is portable and further comprises a carry case.

20. An apparatus for the application of topical negative pressure therapy to a user of the apparatus, comprising:

a negative pressure device unit;

a waste canister releasably connected to the negative pressure device unit; and

one or more fasteners releasably coupleable to the device unit and the canister, the one or more fasteners being configured to releasably couple the device unit and the waste canister;

wherein;

at least one of the clips is configured to releasably engage a shaft member attached to the canister; and

the fasteners are configured to decouple the device unit from the canister upon the application of an abnormal force on the apparatus.

21. An apparatus according to claim 20, wherein:

the fasteners comprise clips configured to bridge a junction between the device and the waste canister; and

the one or more fasteners each have disengagable features at a device end thereof and at a canister end thereof.

22. An apparatus according to claim 21, wherein the disengeagable feature at the canister end comprises a resiliently deformable C-shaped recess releasably coupleable to a shaft portion on said waste canister.

23. An apparatus according to claim 20, wherein at least one of the clips is configured to rotate about the shaft member.

24. An apparatus for the application of topical negative pressure therapy to a user of the apparatus, comprising:

a device housing a negative pressure pump and controls for said pump; and

a waste canister releasably connected thereto;

wherein;

the device and waste canister are connected together by clips configured to extend between the device and the waste canister on opposite sides of the device;

the clips have a first end portion attached to the device and a second end portion attached to the waste canister; and

the clips have one or more points of intended failure configured to break in the event of application of abnormal force to the apparatus, thereby causing the separation of the device and the waste canister; and

the one or more points of intended failure comprise at least one of a reduced cross-section, a moulded in fracture line, and a finger portion configured to break in the event of the application of abnormal force to the apparatus.

25. An apparatus according to claim 24, wherein said clips have one or more disengeagable features at at least one of the first end portion and the second end portion and are configured to bridge a junction between the device and the waste canister.

26. An apparatus according to claim 25, comprising a disengeagable feature at the second end of at least one of the clips having a resiliently deformable C-shaped recess engageable with a shaft portion attached to said waste canister.

27. An apparatus according to claim 25, comprising a disengeagable feature at the first end of at least one of the clips having an inwardly turned resiliently deformable finger portion configured to engage with a tooth portion on the device.

28. An apparatus according to claim 27, wherein the finger portion and the tooth portion have cooperating inclined surfaces to assist engagement and disengagement between the finger and tooth portions.

29. An apparatus according to claim 24, wherein the one or more points of intended failure comprise a finger portion, and the finger portion contains molded-in fracture lines creating intended weakened points configured to break in the event of application of abnormal force to the apparatus.

30. An apparatus according to claim 24, wherein the one or more points of intended failure comprise a finger portion, and the finger portion is configured to break by snapping off at the root of the finger portion in the event of application of abnormal force to the apparatus.