IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0175744
(2011-07-01)
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등록번호 |
US-8795246
(2014-08-05)
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발명자
/ 주소 |
- Hu, Dean
- Yorkey, Thomas
- Anderson, Evan
- Wu, Kenneth
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출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
94 |
초록
▼
Described herein are alarm systems for suction devices for reduced pressure therapy. Alarms systems provide alerts to the patient and/or practitioner regarding the ability of the suction device to continue to provide negative pressure to a tissue region. Alarm systems comprise a sensor mechanism, wh
Described herein are alarm systems for suction devices for reduced pressure therapy. Alarms systems provide alerts to the patient and/or practitioner regarding the ability of the suction device to continue to provide negative pressure to a tissue region. Alarm systems comprise a sensor mechanism, which is capable of detecting the position of a slidable seal within the suction device, and generating an alert. Certain variations of alarms systems comprise magnetic field sensitive switches and/or electric switches. Other variations of alarm systems comprise rotary encoders to detect the motion and location of constant force springs, which signal the notification mechanism to issue alerts accordingly. Described herein are alarm devices configured to retain a suction device therein and to attach the suction device to a patient. The alarm devices disclosed herein detect the depleted state of the suction device and are capable of retaining the suction device in a plurality of orientations.
대표청구항
▼
1. A reduced pressure therapy system comprising: a suction device comprising a suction chamber and a slidable seal therein, wherein the suction device comprises a superior surface, an inferior surface, a proximal end and a distal end, a minimum chamber size configuration and a maximum chamber size c
1. A reduced pressure therapy system comprising: a suction device comprising a suction chamber and a slidable seal therein, wherein the suction device comprises a superior surface, an inferior surface, a proximal end and a distal end, a minimum chamber size configuration and a maximum chamber size configuration;a magnet coupled to the slidable seal; andan alarm device configured to retain the suction device in multiple pre-determined orientations, wherein the alarm device comprises first and second sensors, wherein the first sensor is configured to detect the maximum chamber size configuration when the suction device is in a first pre-determined orientation with the proximal end of the suction device closer to the first sensor than the second sensor, and wherein the second sensor is configured to detect when the same suction device is in the maximum chamber size configuration when in a reversed, second pre-determined orientation with the proximal end of the suction device closer to the second sensor than the first sensor; anda notification mechanism configured to generate an alert according to the location of the magnet. 2. The reduced pressure therapy system of claim 1, wherein the alarm device is configured to be automatically electrically activated upon placement of the suction device into the alarm clip. 3. The reduced pressure therapy system of claim 2, wherein the suction device further comprises a conductive element along an outer surface and the alarm device comprises two or more connectors, wherein the conductive element is configured to detachably provide an electrical conduit between the two or more connectors to electrically activate the alarm device while the suction device is placed in the alarm clip. 4. The reduced pressure therapy system of claim 1, the alarm device further comprising a power switch configured to be pressed by the suction device when the suction device is placed in the alarm device. 5. The reduced pressure therapy system of claim 1, wherein the suction device further comprises a fluid absorption material retained by a carrier within the suction chamber, wherein the fluid absorption material comprises a first and second state, wherein the material in the first state is a dry solid and the material in the second state is semi-solid or gel-like. 6. The reduced pressure therapy system of claim 5, wherein the fluid absorption material is bonded to an outer surface of the carrier. 7. The reduced pressure therapy system of claim 5, wherein the carrier comprises a pouch configured to releasably retain the fluid absorption material. 8. The reduced pressure therapy system of claim 5, wherein the suction device further comprises a screen located between the carrier and the distal portion of the suction chamber. 9. The reduced pressure therapy system of claim 8, wherein the screen is adhesively attached to the suction chamber. 10. The reduced pressure therapy system of claim 9, wherein the screen is adhesively attached to the carrier. 11. The reduced pressure therapy system of claim 1, wherein in the minimum chamber size configuration, the magnet is not detectable by either the first or second sensor and in the maximum chamber size configuration, the magnet is detectable by only one of the first or second sensors. 12. The reduced pressure therapy system of claim 11, wherein the alarm device is configured to detect the configuration of the suction device regardless of the orientation of the suction device as it is retained within the alarm device. 13. The reduced pressure therapy system of claim 12, wherein the first sensor comprises a first reed switch at a first location and the second sensor comprises a second reed switch at a second location separate from the first location, and where the alarm device retains the suction device such that in the minimum chamber size configuration, the magnet is located between the first and second locations and not detectable by either reed switch. 14. The reduced pressure therapy system of claim 13, wherein the first and second locations define a first line with a first midpoint, wherein the travel path of the magnet from the minimum chamber size to the maximum chamber size configurations define a second line with a second midpoint, and wherein the first and second midpoints are offset from each other. 15. The reduced pressure therapy system of claim 13, wherein the distance of the magnet to the nearest reed switch is less in the maximum chamber size configuration than in the minimum chamber size configuration. 16. The reduced pressure therapy system of claim 12, wherein the suction device may be retained within the alarm device in two pre-determined orientations. 17. The reduced pressure therapy system of claim 12, wherein the suction device may be retained within the alarm device in four pre-determined orientations. 18. The reduced pressure therapy system of claim 12, wherein the second pre-determined orientation is rotated 180 degrees around a transverse axis of the suction device from the first pre-determined orientation. 19. The reduced pressure therapy system of claim 12, wherein the suction device may be retained within the alarm device in a third predetermined orientation and a fourth pre-determined orientation, where the third pre-determined orientation is rotated 180 degrees around a longitudinal axis of the suction device from the first pre-determined orientation, and the fourth pre-determined orientation is rotated 180 degrees around the longitudinal axis of the suction device from the second pre-determined orientation. 20. The reduced pressure therapy system of claim 11, further comprising a reed switch at a proximal location of the alarm device, where the alarm device retains the suction device such that in the minimum chamber size configuration, the magnet is not detectable by the reed switch, and in the maximum chamber size configuration, the magnet is detectable by the reed switch. 21. A method of treating a patient, comprising: providing suction to a treatment site using a suction device comprising a suction chamber with an inlet opening and a slidable seal configured to generate reduced pressure within the suction chamber; andabsorbing fluid from a treatment site using a fluid absorbent material retained on a carrier and located in the suction chamber, the fluid absorbent material having a first and second state, wherein the material in the first state is a dry solid and the material in the second state is semi-solid or gel-like, wherein the fluid absorbent material, prior to fluid absorption, has a fixed location adjacent to the inlet opening within the suction chamber of the suction device that is independent of suction device orientation but is at least partially separable from the carrier during use upon fluid absorption and movable in the suction chamber. 22. The method of treating a patient of claim 21, further comprising: blocking expulsion of the fluid absorbent material using a screen located within the suction device. 23. A method of treating a patient, comprising: providing suction to a treatment site using a suction device comprising a suction-generating chamber with an inlet opening and a slidable seal configured to generate a vacuum within the suction-generating chamber;absorbing fluid from a treatment site using a fluid absorbent material retained on a carrier and surrounding the inlet opening of the suction-generating chamber of the suction device that is independent of suction device orientation, the fluid absorbent material having a first and second state, wherein the material in the first state is a dry solid and the material in the second state is semi-solid or gel-like and is configured to separate from the carrier during use upon fluid absorption; andblocking expulsion of the fluid absorbent material using a screen located within the suction-generating chamber. 24. A reduced pressure therapy system comprising: a suction device comprising a suction chamber with an inlet opening at a distal portion of the chamber and a slidable seal therein;an expandable fluid absorbent material located within the suction chamber, wherein the expandable fluid absorbent material has a first and second state, wherein the material in the first state is a dry solid releasably retained by a carrier within the suction chamber adjacent to the inlet opening that is independent of suction device orientation and the material in the second state is a semi-solid or gel-like state that is movable in the suction chamber; anda screen configured to sequester the expandable fluid absorbent material in a distal region of the suction chamber,wherein the expandable fluid absorbent material is configured to separate from the carrier during use upon fluid absorption. 25. The reduced pressure therapy system of claim 24, wherein the expandable fluid absorbent material is bonded to the carrier structure. 26. The reduced pressure therapy system of claim 25, wherein the expandable fluid absorbent material is bonded to a surface of the carrier structure. 27. The reduced pressure therapy system of claim 25, wherein the expandable fluid absorbent material is woven into the carrier structure. 28. The reduced pressure therapy system of claim 27, wherein the carrier structure comprises an aperture therethrough, wherein the aperture is aligned with the inlet opening of the suction chamber. 29. The reduced pressure therapy system of claim 28, wherein the screen is interposed between the inlet opening and the carrier structure. 30. The reduced pressure therapy system of claim 24, wherein the expandable fluid absorbent material is releasably contained within the carrier structure. 31. The reduced pressure therapy system of claim 30, wherein the carrier structure comprises a permeable pouch. 32. The reduced pressure therapy system of claim 31, wherein the permeable pouch comprises two permeable layers sealed together. 33. The reduced pressure therapy system of claim 32, wherein the two permeable layers are sealed together along the perimeter of each of the layers. 34. The reduced pressure therapy system of claim 31, wherein the permeable pouch is attached to the screen. 35. The reduced pressure therapy system of claim 24, wherein the expandable fluid absorbent material comprises one or more disinfecting agents.
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