Source: https://patents.justia.com/patent/7452346
Timestamp: 2019-12-10 16:51:25
Document Index: 783768899

Matched Legal Cases: ['art 96', 'art 92', 'art 94', 'art 96', 'art 94', 'art 92', 'art 96', 'art 94', 'art 92', 'art 94', 'art 96', 'art 94', 'art 96', 'art 94', 'art 96', 'art 98']

US Patent for Coupling device and medical line set including same Patent (Patent # 7,452,346 issued November 18, 2008) - Justia Patents Search
Justia Patents Peritoneal DialysisUS Patent for Coupling device and medical line set including same Patent (Patent # 7,452,346)
Dec 19, 2001 - Gambro Lundia AB
Extracorporeal blood treatment system for individualized treatment
Monitoring a property of the cardiovascular system of a subject
a second connecting part connectable with the liquid introducing portion, the central part and the second connecting part being integrally formed with the first connecting part; and
a predetermined breaking section between the central part and the first connecting part.
In one aspect of the invention the medical line set is a PD line set and in a preferred aspect it is an APD line set.
In a preferred embodiment the central part of the coupling device of said medical line set is adapted to be connectable with the third connector.
The liquid introducing portion 20 includes connection tubes 22 with clamps 26a and one or more first connectors 24 adapted for the introduction of different medical solutions from medical supply bags (not shown). The liquid introducing portion 20 further includes a distributor 28 and a first feed line 30 for delivering the medical solutions to the liquid distribution portion 40.
In connection with the heater bag 54 there is provided a second feed line 42, a dose valve 46, a first F-connector 44, a third feed line 50 provided with a clamp 26b and a first seal 52a for introducing medical solutions from the liquid introducing portion 20 to the heater bag 54. Liquid from the heater bag 54 flows into a patient via an inflow valve 48, an inflow line 58, a Y-connector 62, a patient line 64 provided with a clamp 26d and an injection port 68, and a second connector 66 attached to a PD catheter (not shown) entered into the peritoneal cavity of the patient.
In connection with the drain bag 56 of the liquid distribution portion 40 there is provided a second seal 52b, a first drain line 74, a second F-connector 72, a sampling port 76 and an outflow line 60 having an outflow valve 70 for allowing liquid to flow, on one hand, from the patient to the drain bag 56 and, on the other hand, from the drain bag 56 to the drain portion 80.
The drain portion 80 of the medical line set 10 includes a second drain line 84, having a drain valve 82 and a clamp 26c, and a third connector 86. Said third connector 86 is adapted to be connectable with the coupling device 90 for discharge of used PD solution.
In the embodiment shown in FIGS. 2 and 3, the central part 96 is shaped in the form of a male luer cone having standard luer cone dimensions. Said standard dimensions of a male luer cone connector is as follows: the connection diameter is 4.29 mm and the length of the cone is at least 7.5 mm with a cone angle of 1°43′6″ towards the smallest diameter of the luer cone. The connection diameter of the luer cone is, with reference to FIG. 2, the diameter adjacent the first connecting part 92 at the predetermined breaking section 100 and the smallest diameter of the luer cone is the one adjacent the second connecting part 94.
introducing a PD solution via the liquid introducing portion 20 into the heater bag 54 to prepare a predetermined dose of the PD solution;
introducing said dose of PD solution into the peritoneal cavity of a patient;
extracting the used PD solution from peritoneal cavity of the patient and allowing said used solution to enter the drain bag 56;
separating the liquid introducing portion 20 from the liquid distribution portion 40 through breaking the predetermined breaking section 100, thus separating the central part 96 and the second connecting part 94 of the coupling device from the first connecting part 92; and
connecting the central part 96 and the second connecting part 94 to the third connector 86 of the drain portion 80 for draining the used PD solution via the drain portion 80 to the medical supply bags (not shown).
The coupling device and the medical line set of the invention is preferably used in an APD system, but may also be used in other systems, having the need for a coupling device according to the invention.
First a sterile medical line set 10 is mounted on a PD cycler (not shown). The PD cycler includes four valves, dose valve 46, inflow valve 48, outflow valve 70 and drain valve 82, which are all initially closed. The liquid flow on the PD cycler can be created optional, by e.g. gravitation, in a pressure chamber, with a pump etc. Clamps 26a, b, c, d of the PD medical line set 10 shall now be closed. The first connectors 24, which maybe screw connectors, piercing connectors etc., are attached to medical supply bags (not shown) including for the treatment required solutions. The liquid introducing portion of a medical PD line set used in a previous treatment (not shown) is attached to the third connector 86 of the drain portion 80. Now the clamps 26a are opened and the PD medical line set is automatically primed with PD solution. The dose valve 46 of the PD cycler and clamp 26b are opened and liquid from the medical supply bags flows through first and second feed lines 30 and 42 via the first F-connector 44 and the third feed line 50 to the heater bag 54 to prepare a required and predetermined dose of a PD solution. When the required dose has been filled into the heater bag 54 the dose valve 46 is closed. In the meantime the second connector 66 is connected to a PD catheter (not shown) of a patient to be treated. The PD solution in the heater bag 54 is heated to around body temperature and weighed a first time to define a first weight. The inflow valve 48 and the clamp 26d are opened and the PD solution is allowed to flow through the inflow line 58 and the patient line 64 into the peritoneal cavity of the patient via the second connector 66 and the PD catheter of the patient. When the required dose of PD solution has been distributed to the patient the inflow valve 48 is closed. The injection port 68 on the patient line 64 may be used for injecting into the patient any further solution, substance, etc. such as insulin and antibiotics. Alternatively, it may be used for taking samples, such as samples of the spent PD solution.
Finally, the drain valve 82 and the clamp 26c are opened and the spent and weighed PD solution is drained through the second drain line 84 into the empty medical supply bags used in a previous treatment and attached via the third connector 86. After completion of a treatment the liquid introduction portion 20 of the medical PD line set used in the previous treatment is disconnected from the third connector 86 of the drain portion 80 and discarded. In this final step the coupling device 90 of the now used medical line set (10) is separated into two pieces, one piece comprising the first connecting part 92 and the other piece comprising the second connecting part 94 and the central part 96, by breaking the predetermined breaking section 100 through twisting or bending either of the connecting parts. The resulting second connecting part 94 together with the central part 96 having the shape of a luer lock is then connected to the mating third connector 86, which has the form of a mating luer lock. In general the patient does not separate the coupling device into two pieces, thus moving the liquid introducing portion to the drain portion, until just before the next treatment.
10 medical line set 20 liquid introducing portion 22 connection tube 24 first connector 26a, b, c, d clamp 28 distributor 30 feed line, first 40 liquid distribution portion/PD portion 42 second feed line 44 first F-connector 46 dose valve 48 inflow valve 50 third feed line 52a, b seal 54 heater bag 56 drain bag 58 inflow line 60 outflow line 62 Y-connector 64 patient line 66 second connector 68 Injection port 70 outflow valve 72 second F-connector 74 first drain line 76 sampling port 80 drain portion 82 drain valve 84 second drain line 86 third connector 90 coupling device 92 first connecting part 94 second connecting part 96 central part 98 thread 100 predetermined breaking section 102 bevelled surface 104 gripping surface
5836619 November 17, 1998 Shemesh et al.
0 555 927 August 1993 EP
0 488 288 May 1996 EP
59-139269 August 1984 JP
6125990 May 1994 JP
10234849 September 1998 JP
WO 81/01654 June 1981 WO
Patent number: 7452346
Patent Publication Number: 20040067161
Inventor: Mikael Axelsson (Furulund)
Application Number: 10/250,482
Current U.S. Class: Peritoneal Dialysis (604/29); Coupling Or Connector Structure (604/533); Multiple Sections (604/534)
International Classification: A61M 1/00 (20060101); A61M 39/10 (20060101); A61M 25/16 (20060101);