IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0020792
(2004-12-22)
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등록번호 |
US-7381208
(2008-06-03)
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발명자
/ 주소 |
- van der Walt,Nicholas R.
- Xiao,Jia Hua
- Vancelette,David W.
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출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
49 인용 특허 :
51 |
초록
▼
A cryoablation system for performing endometrial ablation comprising an elongated tubular cannula having a proximal end, a distal end, and a longitudinal axis, an expandable balloon extending from the distal end of the cannula and fluidly connected to a source of heat transfer fluid by at least one
A cryoablation system for performing endometrial ablation comprising an elongated tubular cannula having a proximal end, a distal end, and a longitudinal axis, an expandable balloon extending from the distal end of the cannula and fluidly connected to a source of heat transfer fluid by at least one fluid path, a pump for circulating the heat transfer fluid into and out of the balloon, a probe handle coupled to the proximal end of the cannula and in fluidic communication with the balloon through the cannula, and a heat exchanger for varying the temperature of the heat transfer fluid, wherein the heat exchanger is fluidly connected to a secondary refrigerant source, and wherein the heat exchanger comprises an outer tubular wall and a plurality of fins extending from the tubular wall toward the interior portion of the heat exchanger.
대표청구항
▼
The invention claimed is: 1. A cryoablation system for performing endometrial ablation, comprising: an elongated tubular cannula having a proximal end, a distal end, a longitudinal axis, an internal fluid path, and a central longitudinal axis; a probe tip at the distal end of the cannula; a probe h
The invention claimed is: 1. A cryoablation system for performing endometrial ablation, comprising: an elongated tubular cannula having a proximal end, a distal end, a longitudinal axis, an internal fluid path, and a central longitudinal axis; a probe tip at the distal end of the cannula; a probe handle extending from the proximal end of the cannula; a heat exchanger comprising a tubular wall having an inner surface, an outer surface, and a plurality of extensions within the fluid path, wherein the plurality of extensions extend from the inner surface of the tubular wall toward the central longitudinal axis of the cannula; and a source of compressed refrigerant fluidly connected to the probe handle. 2. The cryoablation system of claim 1, wherein the probe tip comprises an expandable member. 3. The cryoablation system of claim 1, wherein the each of the plurality of extensions is spaced from each adjacent extension by a gap distance. 4. The cryoablation system of claim 3, wherein the gap distance is identical between each of the plurality of extensions. 5. The cryoablation system of claim 1, wherein the plurality of extensions are continuous along the length of the heat exchanger. 6. The cryoablation system of claim 1, wherein the plurality of extensions are discontinuous along the length of the heat exchanger. 7. A cryoablation system for performing endometrial ablation, comprising: an elongated tubular cannula having a proximal end, a distal end, and a longitudinal axis; an expandable balloon extending from the distal end of the cannula and fluidly connected to a source of heat transfer fluid by at least one fluid path; a pump for circulating the heat transfer fluid into and out of the balloon; a probe handle coupled to the proximal end of the cannula and in fluidic communication with the balloon through the cannula; and a heat exchanger for varying the temperature of the heat transfer fluid, wherein the heat exchanger is fluidly connected to a secondary refrigerant source, and wherein the heat exchanger cornprises a central longitudinal axis, a tubular wall an inner surface, an outer surface, and a plurality of fins extending from the inner surface of the tubular wall toward the central longitudinal axis of the heat exchanger. 8. The cryoablation system of claim 7, wherein the heat exchanger is positioned within the probe handle so that the secondary refrigerant can cool the heat transfer fluid to a treatment temperature before the heat transfer fluid is provided to the balloon. 9. The cryoablation system of claim 7, wherein the heat exchanger is positioned within the cannula so that the secondary refrigerant can cool the heat transfer fluid to a treatment temperature before the heat transfer fluid is provided to the balloon. 10. The cryoablation system of claim 7, wherein the heat exchanger is positioned within a console of the system so that the secondary refrigerant can cool the heat transfer fluid to a treatment temperature before the fluid is provided to the probe handle. 11. The cryoablation system of claim 7, wherein the each of the plurality of extensions is spaced from each adjacent extension by a gap distance. 12. The cryoablation system of claim 11, wherein the gap distance is identical between each of the plurality of extensions. 13. The cryoablation system of claim 7, wherein the plurality of extensions are continuous along the length of the heat exchanger. 14. The cryoablation system of claim 7, wherein the plurality of extensions are discontinuous along the length of the heat exchanger.
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