Rinsing line, medical technical functional device, medical technical treatment apparatus and method

Abstract

A rinsing line for discharging a rinsing fluid out of a medical technical functional device having been rinsed by means of the rinsing fluid is described, in which the rinsing line is, on the one side, connected, provided or intended for being connected with a section of the medical technical functional device and in which the rinsing line is, on the other side, connected with, provided or intended for being connected with a fluid supplying device for supplying a medical fluid into the medical technical functional device. A medical technical functional device, a medical technical treatment apparatus, a method and a control unit are also described.

Claims

1. A medical technical functional device comprising: a rinsing line configured to discharge a rinsing fluid out of the medical technical functional device which was rinsed or flushed with the rinsing fluid; an extracorporeal blood circuit comprising an arterial line section, wherein a blood pump is arranged along the arterial line section; a predilution access, wherein a portion of the arterial line section extends from the blood pump to the predilution access; and a rinsing valve directly connected to the rinsing line and directly connected to the portion of the arterial line section that extends from the blood pump to the predilution access, wherein the rinsing line is connected with or configured to be connected with a fluid supplying device configured to supply a medical fluid into the medical technical functional device.

2. The medical technical functional device according to claim 1, further comprising: a port, the port comprising at least: an inner tubing segment having a first lumen; and an outer tubing segment having a second lumen, wherein the outer tubing segment is arranged at least around one area of the inner tubing segment such that a space is formed within the second lumen between an exterior of the inner tubing segment and the outer tubing segment; wherein the first lumen of the inner tubing segment is configured to at least one of receive or conduct the medical fluid, and wherein the space of the outer tubing segment is configured to at least one of receive or conduct at least the rinsing fluid, or vice versa.

3. The medical technical functional device according to claim 1, wherein the medical technical functional device is configured as one of an extracorporeal blood tubing set, a blood treatment cassette, or a disposable blood treatment cassette.

4. A medical technical treatment apparatus, connected with or configured to be connected with at least one medical technical functional device according to claim 1.

5. A method comprising at least one of rinsing, flushing or priming the medical technical functional device according to claim 1.

6. The method according to claim 5, further comprising: at least partially discharging or draining, respectively, the rinsing fluid out of the rinsed medical technical functional device through the rinsing line into a port or a machine connector for supplying substituate liquid from a medical technical treatment apparatus into the medical technical functional device.

7. A control unit, configured to be used with the medical technical treatment apparatus according to claim 4, and configured for automatically performing or executing the method of at least one of rinsing, flushing or priming the at least one medical technical functional device.

8. The medical technical functional device according to claim 1, wherein the medical technical functional device further comprises the fluid supplying device, wherein the fluid supplying device is a port for supplying a substituate liquid into the medical technical functional device.

9. The medical technical functional device according to claim 1, wherein the medical technical functional device further comprises the fluid supplying device, wherein the fluid supplying device is or comprises a biluminal connection section configured to concurrently conduct two fluids.

10. The medical technical functional device according to claim 1, wherein the medical technical functional device further comprises a blood cassette.

11. The medical technical functional device according to claim 10, wherein the arterial line section of the extracorporeal blood circuit is arranged between (a) the blood pump or an intervention or engaging section of the extracorporeal blood circuit for the blood pump and (b) an extracorporeal blood treatment device.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a front view of a medical technical functional device of the present invention.

(2) FIG. 2 shows, in a schematically simplified manner, a medical technical functional device for performing a rinsing or flushing and/or priming method according to the present invention.

DETAILED DESCRIPTION

(3) FIG. 1 shows a front view of a medical technical functional device 1000 according to the present invention.

(4) The functional device 1000 is designed or embodied as a blood cassette (in the following shortly referred to as: cassette).

(5) The cassette 1000 comprises an arterial patient access 1 as well as a venous patient access 3.

(6) The cassette 1000 comprises a connector 5 for discharging blood out of the blood cassette 1000 as well as a connector 7 for introducing blood into the cassette 1000.

(7) Both connectors 5 and 7 are connectable or connected with a pump tubing segment or set of a blood pump (not shown in FIG. 1).

(8) The cassette 1000 comprises an arterial filter line 9 as well as a venous filter line 11.

(9) The cassette's 1000 interior comprises a venous blood chamber 13.

(10) The cassette 1000 comprises an addition site 15 for adding substituate liquid into the cassette 1000. The substituate liquid can be a substituate liquid having been prepared online by the treatment apparatus.

(11) For further details of elements, components or constituents of the cassette shown in FIG. 1, it is referred to the afore-mentioned German Application Nos. DE 10 2009 018 664.6 and DE 10 2009 024 468.9 of the applicant of the present application, in particular to FIGS. 17 to 24 therein.

(12) The addition site 15 for substituate liquid comprises a substituate port (not shown in FIG. 1).

(13) The substituate port can be a port as described in German Application No. DE 10 2010 032 181.1 of the present applicant having the title Ankoppeleinrichtung, Konnektor, medizintechnische Funktionseinrichtung, medizintechnische Behandlungsvorrichtung sowie Verfahren (Coupling device, connector, medico-technical functional device, medico-technical treatment device and method) that has been filed with the German Patent and Trademark Office on Jul. 23, 2010. The respective disclosure thereof is fully incorporated herein in its entirety by reference thereto.

(14) The cassette 1000 comprises a connector 17 for discharging substituate out of the cassette 1000 as well as a connector 19 for introducing substituate into the cassette 1000, wherein the connectors 17 and 19 are connectable with a pump tubing segment or set of a substituate pump (not shown in FIG. 1) for the purpose of conveying the substituate liquid within an interior of the cassette 1000.

(15) The cassette 1000 comprises a substituate line 37, a predilution access 21 and a postdilution access 23.

(16) The cassette 1000 that isexemplarily and without being limited to this exemplary embodimentdesigned as a single-needle blood treatment cassette comprises a single-needle chamber 25.

(17) The cassette 1000 comprises a rinsing line 27 according to the present invention.

(18) In the example of FIG. 1, the rinsing line 27 is arranged between the addition site 15 for substituate liquid, i.e., a fluid supplying device, and the predilution access 21.

(19) In the following, the execution or performance of the method according to the present invention will be described with reference to FIG. 2 in an exemplary embodiment using a single-needle treatment cassette.

(20) Substituate liquid is exemplarily used as a rinsing or flushing and/or priming liquid; however, the present invention is again not limited to this example.

(21) In a schematically simplified manner, FIG. 2 shows a functional device 1000 according to the present invention for performing a rinsing or flushing and/or priming method according to the present invention.

(22) The functional device 1000 comprises an extracorporeal blood circuit 2000. The extracorporeal blood circuit 2000 comprises an arterial line section 29 as well as a venous line section 31.

(23) The arterial line section 29 and the venous line section 31 are short-circuited. Herefor, a standard straight connector may be used.

(24) A blood pump 33 is arranged in the arterial line section 29.

(25) A substituate pump 35 is arranged in the substituate line 37.

(26) A treatment device 3000 between the arterial line section 29 and the venous line section 31 serves for extracorporeally treating blood.

(27) Exemplarily being designed as a dialysis device (also referred to as a blood filter), the treatment device 3000 comprises a dialysate inlet 3001 at a respective dialysate supply line 3002 as well as a dialysate outlet 3003 at a respective dialysate drain line 3004.

(28) The rinsing line 27 comprises a rinsing valve 271. The rinsing valve 271 may, however, also be part of the functional device 1000; furthermore, the rinsing valve 271 may also be part of the rinsing line 27 and the functional device 1000.

(29) The rinsing line 27 branches off from the functional device 1000 or a fluid-conducting section thereof, respectively, in the range of a rinsing branch or a rinsing junction 273, respectively.

(30) The rinsing line 27 further comprises an optional first blood detection sensor 275 (e.g., an optical sensor).

(31) The rinsing line 27 ends in a substituate port 4000. In the substituate port 4000, the rinsing line 27 branches off to a drain line 39.

(32) The substituate line 37 extends or leads from the substituate port 4000 to the extracorporeal blood circuit 2000. The substituate line 37 is supplied with fresh substituate from a substituate liquid source (not shown) via a supply line 41.

(33) In the substituate line 37, a second blood detection sensor 375 (e.g., an optical sensor) is arranged.

(34) For performing the rinsing or flushing and/or priming method according to the present invention, the venous chamber 13 is filled at first.

(35) Herefor, the substituate pump 35 conveys substituate liquid, for example, with a defined flowthe latter may be set by the uservia the postdilution access 23 into the venous chamber 13. A venous clamp (not shown in FIG. 2) may thereby be closed.

(36) The substituate liquid flows from the venous chamber 13 through an opened single-needle valve (not shown in FIG. 2) that is connected with the single-needle chamber 25 into the single-needle chamber 25. The single-needle chamber 25 is preferably opened to the surroundings. In certain exemplary embodiments, ventilation may be effected via a connection that can be opened at or on the single-needle chamber 25e.g., a ventilation valve arranged at or on the single-needle chamber 25.

(37) As soon as a level has been detected in the venous chamber 13, arterial and venous tubing clamps (not shown in FIG. 2, respectively) are opened in order to fill the arterial and the venous line sections.

(38) The blood pump 33 is started with a defined flow, and the substituate pump 35 is stopped.

(39) As soon as the level in the venous chamber 13 has dropped appropriately, the substituate pump 35 is started with a volume flow larger than the volume flow of the blood pump 33. Hereby, the blood pump 33 is still running.

(40) Thereby, the venous chamber 13 is filled again. The substituate pump 35 will be stopped, when the level in the venous chamber 13 has been detected and, additionally, a defined volume has been conveyed by means of the substituate pump 35 thereafter.

(41) If liquid is detected at the arterial air detector (not shown in FIG. 2), the blood pump 33 conveys a defined volume for filling the blood pump tubing and further on until the venous level has dropped.

(42) For filling the treatment device 3000, the venous clamp and the postdilution valve of the postdilution access 23 are closed.

(43) The substituate pump 35 conveys substituate liquid via the opened predilution valve of the predilution access 21 into the extracorporeal blood circuit until a level has been detected in the venous chamber 13. In this way, the treatment device 3000 is filled.

(44) Subsequently, rinsing or flushing is started, wherein the extracorporeal blood circuit 2000 is completely filled with liquid. In certain exemplary embodiments of the present invention, rinsing or flushing, respectively, the extracorporeal circuit 2000 can be carried out immediately after filling.

(45) In certain exemplary embodiments, rinsing or flushing serves for removing particles from the extracorporeal blood circuit 2000 and the treatment device 3000 in order to avoid any incorporation thereof into the patient.

(46) As the arterial line section 29 and the venous line section 31 are short-circuited, rinsing or flushing in a single-pass procedure is not possible. In those exemplary embodiments, the method according to the present invention may advantageously consider and correspondingly avoid a possible recirculation as described below.

(47) The treatment device 3000 is filled with substituate liquid on the blood side. The extracorporeal blood circuit 2000 is free from air.

(48) For filling the single-needle chamber 25, the substituate pump 35 conveys with a defined flow via the predilution valve of the predilution access 21.

(49) Thereby, substituate liquid is introduced via the treatment device 3000 into the single-needle chamber 25. The single-needle valve as well as a ventilation valve at or on the single-needle chamber 25 are opened.

(50) Arterial and venous clamps (not shown in FIG. 2) are closed. The rinsing valve 271 is closed. The blood pump 33 is not operated.

(51) As soon as a level has been detected in the single-needle chamber 25, the latter is filled volumetrically.

(52) When the volumetric filling of the single-needle chamber 25 has been finished, the ventilation valve at or on the single-needle chamber 25 is closed.

(53) The rinsing valve 271 is being opened.

(54) Additionally, the arterial and the venous clamp are opened, preferably at the same time.

(55) The blood pump 33 is started with a flow significantly lower than the flow of the substituate pump 35. Thus, the substituate flow is divided at the predilution access 21. One portion of the substituate liquid is directly discarded into the rinsing line 27, the other portionthat is initially only defined by the conveyance rate of the blood pump 33flows through the treatment device 3000.

(56) The flow path of the substituate liquid is illustrated in FIG. 2 by means of a block arrow.

(57) If the flow of the substituate pump 35 is sufficiently high, the complete substituate fluid conveyed by means of the blood pump 33 flows into the rinsing line 27. In certain exemplary embodiments of the method according to the present invention, a repulsion can be ruled out at a relation of blood pump rate to substituate pump rate of 1:2.

(58) In this way, it may advantageously be possible to inhibit an overpulsing or overflowing, respectively, of the substituate liquid through the predilution access 21 back into the substituate line 37. A recirculation of the substituate liquid may thus advantageously be avoided.

(59) In order to reduce the level in the single-needle chamber 25, air is conveyed into the single-needle chamber 25 by means of a single-needle compressor (not shown in FIG. 2).

(60) Air can be conveyed as long as a venous level detector (not shown in FIG. 2) does not detect a level anymore.

(61) In order to avoid that used liquid, i.e., liquid having been used for rinsing or flushing, respectively, and/or priming the functional device 1000, is pushed back or opposite, respectively, to the usual flow direction through the treatment device 3000, the volume flow resulting from emptying the single-needle chamber 25 will, in certain exemplary embodiments, be set such that it does not exceed the flow of the blood pump 33.

(62) The venous level detector and the pressure within the single-needle container are used for reducing the liquid level within the venous chamber 13 as much as possible.

(63) If a predetermined level has been reached, the blood pump 33 is stopped.

(64) The venous clamp and the ventilation valve at or on the single-needle chamber 25 are closed. The single-needle compressor is stopped.

(65) For determining the amount of rinsing liquid, the flow conveyed by means of the blood pump 33 can be considered. If a defined value has been reached, the rinsing process will be finished.

(66) If this is not the case, in certain exemplary embodiments, the single needle chamber 25 can be filled again and rinsing can be continued.