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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0082951 (2013-11-18) |
등록번호 | US-9737455 (2017-08-22) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 1 인용 특허 : 351 |
A tissue treatment apparatus and method are provided for treating tissue by the application of the time-varying sub-atmospheric pressure. The apparatus includes a cover adapted to cover a wound and adapted to maintain sub-atmospheric pressure the site of the wound. The apparatus further includes a s
A tissue treatment apparatus and method are provided for treating tissue by the application of the time-varying sub-atmospheric pressure. The apparatus includes a cover adapted to cover a wound and adapted to maintain sub-atmospheric pressure the site of the wound. The apparatus further includes a source of suction configured to generate a time-varying sub-atmospheric pressure having a periodic waveform comprising a gradual change in pressure. The suction source cooperates with the cover to supply the time-varying sub-atmospheric pressure under the cover to the wound. The time-varying sub-atmospheric pressure may vary between a first pressure value below the inherent tissue tension of the wound tissue and a second pressure value above the inherent tissue tension of the wound tissue.
1. A method for growing wound tissue employing gradually varying sub-atmospheric pressure, the method comprising: (a) overlaying wound tissue with a reticulated screen configured to stimulate tissue growth at the wound tissue;(b) enclosing the reticulated screen and the wound tissue under a cover to
1. A method for growing wound tissue employing gradually varying sub-atmospheric pressure, the method comprising: (a) overlaying wound tissue with a reticulated screen configured to stimulate tissue growth at the wound tissue;(b) enclosing the reticulated screen and the wound tissue under a cover to provide an enclosure above the wound tissue and the reticulated screen in which sub-atmospheric pressure may be maintained; and(c) applying a non-intermittent, gradually varying sub-atmospheric pressure to the enclosure from a source of sub-atmospheric pressure operably connected to the cover, and maintaining the non-intermittent, gradually varying sub-atmospheric pressure for a time sufficient to stimulate tissue growth at the wound tissue. 2. The method of claim 1, wherein the step of applying a non-intermittent, gradually varying sub-atmospheric pressure comprises applying a sinusoidal waveform variation in sub-atmospheric pressure. 3. The method of claim 1, wherein the step of applying a non-intermittent, gradually varying sub-atmospheric pressure comprises applying a triangular waveform variation in sub-atmospheric pressure. 4. The method of claim 1, wherein the step of applying a non-intermittent, gradually varying sub-atmospheric pressure comprises applying a saw-tooth waveform variation in sub-atmospheric pressure. 5. The method according to any one of claims 1-4, wherein the step of applying a non-intermittent, gradually varying sub-atmospheric pressure comprises applying a pressure value of between about 25 mmHg below atmospheric pressure and 100mmHg below atmospheric pressure. 6. The method according to any one of claims 1-4, wherein the cover comprises a flexible self-adhesive sheet. 7. The method according to any one of claims 1-4, wherein the reticulated screen comprises an open-cell foam, a synthetic polymer material, a non-adherent material, a polymer mesh, or a combination thereof. 8. The method according to any one of claims 1-4, wherein the step of applying a sub-atmospheric pressure comprises communicating the sub-atmospheric pressure through a port that is operably connected to both the source of sub-atmospheric pressure and the cover. 9. The method according to claim 8, wherein the step of applying a sub-atmospheric pressure comprises communicating the sub-atmospheric pressure through a tube that is operably connected to the port and the source of sub-atmospheric pressure. 10. The method according to any one of claims 1-4, wherein step of applying a non-intermittent, gradually varying sub-atmospheric pressure comprises applying a digitized waveform. 11. An apparatus employing gradually varying sub-atmospheric pressure for growing wound tissue, the apparatus comprising: (a) a reticulated screen configured to stimulate tissue growth at the wound tissue;(b) a cover configured to enclose the wound tissue and the reticulated screen and provide an enclosure above the wound tissue and the reticulated screen in which sub-atmospheric pressure may be maintained; and(c) a source of sub-atmospheric pressure configured to apply and maintain a non-intermittent, gradually varying sub-atmospheric pressure to the enclosure for a time sufficient to stimulate tissue growth at the wound tissue. 12. The apparatus of claim 11, wherein the source of sub-atmospheric pressure is configured to apply and maintain a sinusoidal waveform variation in sub-atmospheric pressure. 13. The apparatus of claim 11, wherein the source of sub-atmospheric pressure is configured to apply and maintain a triangular waveform variation in sub-atmospheric pressure. 14. The apparatus of claim 11, wherein the source of sub-atmospheric pressure is configured to apply and maintain a saw-tooth waveform variation in sub-atmospheric pressure. 15. The apparatus of claim 11, wherein the source of sub-atmospheric pressure is configured to provide a sub-atmospheric pressure having a pressure value of between about 25 mmHg below atmospheric pressure and 100 mmHg below atmospheric pressure. 16. The apparatus of claim 11, wherein the cover comprises a flexible self-adhesive sheet. 17. The apparatus of claim 11, wherein the reticulated screen comprises an open-cell foam, a synthetic polymer material, a non-adherent material, a polymer mesh, or a combination thereof. 18. The apparatus of claim 11, comprising a port operably connected to the cover. 19. The apparatus of claim 18, comprising a tube operably connected to the source of sub-atmospheric pressure and the port. 20. The apparatus of claim 11, wherein the source of sub-atmospheric pressure is configured to apply and maintain a digitized waveform variation in sub-atmospheric pressure. 21. The method according to any one of claims 1-4, wherein the screen has a degree of reticulation is selected to deter tissue growth within the reticulated screen. 22. The method according to any one of claims 1-4, wherein the screen comprises a bioabsorbable material. 23. The apparatus of any one of claims 11-14, wherein the screen has a degree of reticulation selected to deter tissue growth within the reticulated screen. 24. The apparatus of any one of claims 11-14, wherein the screen comprises a bioabsorbable material.
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