IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0681487
(2007-10-04)
|
등록번호 |
US-8728020
(2014-05-20)
|
국제출원번호 |
PCT/IB2007/002949
(2007-10-04)
|
§371/§102 date |
20100616
(20100616)
|
국제공개번호 |
WO2009/044221
(2009-04-09)
|
발명자
/ 주소 |
- Caleffi, Luca
- Sakota, Ranko
- Franzoni, Giuseppe
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
92 |
초록
▼
In an infusion apparatus, an infusion line (4) connects a container (2) of an infusion fluid to an extracorporeal blood circuit (23). A first valve (6) closes the infusion line downstream of an infusion pump (5). An expansion chamber (9), provided with a pressure sensor (10), is arranged between the
In an infusion apparatus, an infusion line (4) connects a container (2) of an infusion fluid to an extracorporeal blood circuit (23). A first valve (6) closes the infusion line downstream of an infusion pump (5). An expansion chamber (9), provided with a pressure sensor (10), is arranged between the infusion pump and the first valve. A second valve (8) closes a vent line (7) of the expansion chamber. The processor closes the first valve when the container is emptied. After replacement with a new and full container, the processor restarts the pump and selectively opens the first valve or the second valve according to the increase in pressure measured in the expansion chamber.
대표청구항
▼
1. An infusion apparatus comprising: at least a batch container containing an infusion fluid;an infusion line having a first end which is connected to the batch container and a second end which is configured to supply the infusion fluid, the second end of the infusion line being directly connected t
1. An infusion apparatus comprising: at least a batch container containing an infusion fluid;an infusion line having a first end which is connected to the batch container and a second end which is configured to supply the infusion fluid, the second end of the infusion line being directly connected to a blood withdrawal line or a blood return line;an infusion pump operating on the infusion line and configured for circulation of the infusion fluid from the first end of the infusion line to the second end of the infusion line;a first valve designed to open and close the infusion line between the pump and the second end;a gas-liquid separator arranged in an intermediate tract of the infusion line extending between the infusion pump and the first valve;a vent line having a first end which is connected to the gas-liquid separator and a second discharge end which is opposite the first end, the second discharge end of the vent line being directly connected to an element selected from the group of elements consisting of: the batch container of the infusion fluid,an initial tract of the infusion line comprised between the batch container and the infusion pump,an aspiration device,a fluid transport line connected to a fluid chamber of a blood treatment device having a semipermeable membrane which separates the fluid chamber from a blood chamber, anda used fluid discharge line of a hemo(dia)filtration apparatus;a second valve designed to open and close the vent line;a first pressure sensor configured for emitting a first signal indicative of pressure in the intermediate tract;a control unit programmed to: close the first valve and the second valve,activate the infusion pump,receive the first signal,determine at least one pressure change value based on the first signal,compare the pressure change value with at least one reference value, andopen either the first valve or the second valve depending upon the outcome of the comparison. 2. The apparatus of claim 1, wherein the control unit is configured to open the first valve or the second valve according to whether the pressure change value is greater or, respectively, lower than the reference value. 3. The apparatus of claim 1, wherein the control unit is configured to determine the pressure change value in the intermediate tract during a predetermined change of another parameter while the pump is activated. 4. The apparatus of claim 3, wherein the another parameter is selected from the group of parameters consisting of the time, the volume/weight of fluid displaced by the pump, the displacement of a mobile element of the pump, and a weight of the batch container of the infusion fluid. 5. The apparatus of claim 3, wherein the pressure change value is placed in relation with or normalised with respect to said another parameter. 6. The apparatus of claim 1, wherein the gas-liquid separator comprises an expansion chamber. 7. The apparatus of claim 1, wherein the first end of the vent line is connected with or engaged to a top of the gas-liquid separator. 8. The apparatus of claim 1, wherein the first pressure sensor is associated to the gas-liquid separator. 9. The apparatus of claim 1, wherein the second end of the infusion line is connected to an extracorporeal blood circuit of an apparatus for extracorporeal blood treatment. 10. The apparatus of claim 1, comprising a weight sensor which emits a signal indicating a weight of the batch container, the control unit being programmed to perform the following stages: opening the first valve, closing the second valve, activating the pump with the first valve open and the second valve closed, acquiring at least a weight value of the batch container, comparing the weight value with a reference weight value, and signalling a faulty situation and/or stopping the pump and/or closing the first valve according to a result of the comparison. 11. The apparatus of claim 10, wherein the reference weight value comprises a previously acquired weight value of the batch container and wherein comparing comprises assessing whether the weight of the batch container is no longer decreasing, or wherein the reference weight value comprises a predefined value indicative of the weight of the empty fluid batch container. 12. The apparatus of claim 1, wherein the infusion pump is a volumetric pump. 13. The apparatus of claim 1, wherein the infusion pump is an occlusive pump. 14. The apparatus of claim 1, comprising a second pressure sensor for emitting a second signal indicating the pressure in an initial tract of the infusion line comprised between the batch container and the infusion pump. 15. The apparatus of claim 14, wherein the control unit is programmed to: acquire at least a pressure value in the initial tract supplied by the second pressure sensor, compare the pressure value in the initial tract with a reference value, and signal a faulty situation and/or stop the pump and/or close the first valve according to the comparison. 16. An infusion apparatus comprising: an infusion line having a first end which is configured to be connected to a source of infusion fluid and a second end which is configured to supply the infusion fluid;an infusion pump operating on the infusion line and configured for circulation of the infusion fluid from the first end to the second end;a first valve designed to open and close the infusion line between the pump and the second end;a gas-liquid separator arranged in an intermediate tract of the infusion line extending between the infusion pump and the first valve;a vent line having a first end which is connected to the gas-liquid separator and a second end which is opposite the first end, the second end of the vent line being directly connected to an element selected from the group of elements consisting of: the source of infusion fluid,an initial tract of the infusion line comprised between the first end of the infusion line and the infusion pump,an aspiration device,a fluid transport line connected to a fluid chamber of a blood treatment device having a semipermeable membrane which separates the fluid chamber from a blood chamber, anda used fluid discharge line of a hemo(dia)filtration apparatus;a second valve designed to open and close the vent line;a first pressure sensor configured for emitting a first signal indicative of pressure in the intermediate tract;a control unit programmed to: close the first valve and the second valve,activate the pump while said first and second valves are closed,determine at least a value of pressure change in the intermediate tract taking place during a predetermined variation of another parameter while the pump is activated,compare the above-mentioned pressure change value with a reference value, andopen either the first valve or the second valve according to the comparison. 17. The apparatus of claim 16 wherein the another parameter is selected from the group consisting of: the volume of fluid pumped by the infusion pump, a parameter indicative of this volume, the time, the displacement of a mobile element of the infusion pump, and the weight of a container of the infusion fluid. 18. An infusion apparatus comprising: an infusion line having a first end which is configured to be connected to a source of infusion fluid and a second end which is configured to supply the infusion fluid;an infusion pump operating on the infusion line and configured for circulation of the infusion fluid from the first end to the second end;a first valve designed to open and close the infusion line between the pump and the second end;a gas-liquid separator arranged in an intermediate tract of the infusion line extending between the infusion pump and the first valve;a vent line having a first end which is connected to the gas-liquid separator and a second end which is opposite the first end;a second valve designed to open and close the vent line;a first pressure sensor configured for emitting a first signal indicative of pressure in the intermediate tract;a second pressure sensor for emitting a second signal indicating the pressure in an initial tract of the infusion line comprised between the first end of the infusion line and the infusion pump;a control unit programmed to: close the first valve and the second valve,activate the pump while said first and second valves are closed,determine at least a value of pressure change in the intermediate tract taking place during a predetermined variation of another parameter while the pump is activated,compare the above-mentioned pressure change value with a reference value, andopen either the first valve or the second valve according to the comparison. 19. An infusion apparatus comprising: at least a batch container containing an infusion fluid;an infusion line having a first end which is connected to the batch container and a second end which is configured to supply the infusion fluid, the second end of the infusion line being directly connected to a blood withdrawal line or a blood return line;an infusion pump operating on the infusion line and configured for circulation of the infusion fluid from the first end of the infusion line to the second end of the infusion line;a first valve designed to open and close the infusion line between the pump and the second end;a gas-liquid separator arranged in an intermediate tract of the infusion line extending between the infusion pump and the first valve;a vent line having a first end which is connected to the gas-liquid separator and a second discharge end which is opposite the first end;a second valve designed to open and close the vent line;a first pressure sensor configured for emitting a first signal indicative of pressure in the intermediate tract;a second pressure sensor for emitting a second signal indicating the pressure in an initial tract of the infusion line comprised between the batch container and the infusion pump;a control unit programmed to: close the first valve and the second valve,activate the infusion pump,receive the first signal,determine at least one pressure change value based on the first signal,compare the pressure change value with at least one reference value, andopen either the first valve or the second valve depending upon the outcome of the comparison. 20. The apparatus of claim 19, wherein the control unit is configured to open the first valve or the second valve according to whether the pressure change value is greater or, respectively, lower than the reference value. 21. The apparatus of claim 19, wherein the control unit is configured to determine the pressure change value in the intermediate tract during a predetermined change of another parameter while the pump is activated. 22. The apparatus of claim 21, wherein the another parameter is selected from the group of parameters consisting of the time, the volume/weight of fluid displaced by the pump, the displacement of a mobile element of the pump, and a weight of the batch container of the infusion fluid. 23. The apparatus of claim 21, wherein the pressure change value is placed in relation with or normalised with respect to said another parameter. 24. The apparatus of claim 19, wherein the gas-liquid separator comprises an expansion chamber. 25. The apparatus of claim 19, wherein the first end of the vent line is connected with or engaged to a top of the gas-liquid separator. 26. The apparatus of claim 19, wherein the first pressure sensor is associated to the gas-liquid separator. 27. The apparatus of claim 19, wherein the second end of the infusion line is connected to an extracorporeal blood circuit of an apparatus for extracorporeal blood treatment. 28. The apparatus of claim 19, comprising a weight sensor which emits a signal indicating a weight of the batch container, the control unit being programmed to perform the following stages: opening the first valve, closing the second valve, activating the pump with the first valve open and the second valve closed, acquiring at least a weight value of the batch container, comparing the weight value with a reference weight value, and signalling a faulty situation and/or stopping the pump and/or closing the first valve according to a result of the comparison. 29. The apparatus of claim 28, wherein the reference weight value comprises a previously acquired weight value of the batch container and wherein comparing comprises assessing whether the weight of the batch container is no longer decreasing, or wherein the reference weight value comprises a predefined value indicative of the weight of the empty fluid batch container. 30. The apparatus of claim 19, wherein the infusion pump is a volumetric pump. 31. The apparatus of claim 19, wherein the infusion pump is an occlusive pump. 32. The apparatus of claim 19, wherein the control unit is programmed to: acquire at least a pressure value in the initial tract supplied by the second pressure sensor, compare the pressure value in the initial tract with a reference value, and signal a faulty situation and/or stop the pump and/or close the first valve according to the comparison.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.