CN101450002B - Transport device for sterile media - Google Patents

Abstract

Pump devices are known in water-jet surgery, that are used to transport a sterile fluid through a reservoir to the surgical instrument by means of piston pumps or other such volumetric pumps. According to the invention, either drive devices for the pumps are embodied in such a way that the suction cycle thereof is shorter than the output cycle, or a pump comprises at least three pump chambers and the drive devices are embodied in such a way that the suction and output cycles of the pump chambers overlap each other.

Description

Transport device for sterile media

The application is that the international patent application no that the original name that got into the China national stage on March 27th, 2006 is called " transport device for sterile media " is PCT/EP2004/006451 (a Chinese application number 200480027931.5), and international filing date is dividing an application of on August 24th, 2004.

Technical field

The present invention relates to a kind of sterile liquid that is used to carry,, can for example use in the water jet operation such as the device of Ringer's solution.

Background technology

In the water jet field of surgery (this is the example of a particular importance), require below generally speaking must satisfying:

-must guarantee the aseptic of liquid, because it not only can touch patient's health, and can more or less stay in the human body;

-in order to realize the effect of tissue regeneration, needed flow of liquid and/or the needed pressure of this flow of liquid must be quite constant with can repeat to adjust;

The people of this device of-operation must freely select each persistent period with the constant current running;

-the container that stores liquid should have different sizes, so that can lay in the amount that special applications needs, does not need in use to change container on the one hand, on the other hand, can not stay the excessive container that only consumes part;

-device startup and stop there is not the time lag phenomenon, promptly pressure must increase and in use after this, can not descend soon;

-must change applicator at an easy rate.

It is existing that the surgery water jet is operated on the device itself of building pressure in equipment and relevant being used for.Keep the technical scheme of operation liquid integral asepsis, prevent that promptly it from having any contact with the parts of pumping mechanism, open in the DE4200976C2 file.But through this known solution, the user can only use a true quantitative liquid medium, because this liquid leaves in the previous ready cartridge case.In case open cartridge case, no matter in the operation process of reality, used wherein what, any remaining liquid just can not utilize again.Residue must be dropped.The big or small full-size that has determined the liquid reservoir of this known device of device most importantly.In the time of the needs dingus, be easy to occur in the situation that must change liquid reservoir in the operation process, this has just interrupted the operation process.And liquid reservoir must be by entire pressurisation, thereby also will depend on the free space that is used for liquid reservoir.

Sterilizing filter, in the process of the medium of carrying non-sterile, can filter out any can from one not the disinfectant conveyer device get into the antibacterial the cutting medium, have a lot of shortcomings.One of shortcoming is exactly that maintenance cost improves significantly owing to must remove to change filter at the interval of confirming.And filter tends to suppress flowing of liquid.Under high-pressure situations, some limitation of the sterilizing filter of embedding, because they will stand bigger liquid flow variation when this device starts and closes, this has also influenced the rapid rising of required pressure.

Summary of the invention

The object of the invention is to provide a kind of sterile liquid conveyer device, has simplified and improved its availability in operating room.

This purpose is transported to operating theater instruments to sterile media from the perhaps similar source of a reservoir through a kind of sterile liquid conveyer device and realizes; Apparatus or a kind of similar consumer especially for the water jet operation; This conveyer device comprises piston pump or similar gageable delivery pump; Have one and suck that circulation sucks medium and an output circulation comes ejection medium; And comprise pump is connected to conduit and valving on source and the operation device, and the driving device that drives the pump housing, the mode that this driving device is shorter than the output cycle with imbibition cycle is come construction and is connected on the pump.Can be selectively, this pump comprises three or more a plurality of pump chambers, and each pump chamber starts with the mode that overlaps each other the service cycle of each pump.

Under the situation of first kind of selection, pump preferably comprises first and second piston/cylinder unit or similar pump chamber at least.Thereby it can control the output cycle that the imbibition cycle that makes the pump chamber of winning is shorter than second pump chamber with the mode of push away-drawing, and vice versa.Therefore, only just be enough to guarantee to produce a lasting flow of liquid with two pump chambers.

The preferable construction of driving device is that the output cycle is overlapped each other, can guarantee an isostatic especially flow of liquid like this, there is no need to re-use storage capsule or similar device.

Each driving device all preferably is construed as and can be transported to operation device to medium with a suitable constant compression force and a constant conveying capacity, and this has improved availability widely.

Preferably, pump is connected on the driving device with removably.Therefore one " sterile equipment parts " can be separated with a very difficult disinfectant " not sterilizing equipment decontaminating apparatus parts ".

In the present embodiment, pump and/or conduit, it is particularly advantageous preferably being designed to one " disposable assembly " together with valving.Therefore in each use, a cover comprises that pump, conduit and necessary valving can one be connected to store and treats that the other end is connected on the operating theater instruments on the container of pumped (conveying) medium, and then is connected on the driving arrangement.This covering device is promptly abandoned by whole after using.Shirtsleeve operation can be guaranteed integral asepsis like this, because the manufacturer can be through simple mode to this package unit sterilization.

Driving device can have the different replaced form; Such as can a CD-ROM drive motor of control separately being set for each pump chamber; Therefore the velocity contour of each pump chamber can be set by means of suitable electronic control system (such as using stepping motor) at an easy rate as required.Selectively (but being additional in some cases), driving device is a gear drive, this device has a gear train that links to each other with CD-ROM drive motor and the gear train output shaft that is used for each pump chamber.Although imbibition cycle can not change with the ratio in output cycle in this embodiment, transporting velocity still is easy to just can set, and its complexity is also very low equally.

Description of drawings

With reference to accompanying drawing more detailed description is made in preferred embodiment of the present invention below, wherein:

Fig. 1 is the sketch map of the first embodiment of the present invention,

Fig. 2 is the chart of pump cycles,

Fig. 3 similarly illustrates another embodiment of the present invention with one with Fig. 1,

Fig. 4 is the chart according to the pump cycles of device shown in Figure 3, and

Fig. 5 illustrates one the 3rd preferred embodiment of the present invention.

The specific embodiment

In the following description, the identical parts that perhaps have said function use identical label.

One first pump 20 and second pump 30 have been equipped with in the embodiment shown in fig. 1; Each pump comprises a piston 25,35 respectively; 27,37 and one of 26,36, one piston rods of a cylinder are connected to the pumping conduit 21,31 on the operation apparatus 1 through 24,34 and pinch valves 2 of output valve separately.

Pumping conduit 21 and 31 respectively through suction catheter 22 and 32 and inhaling valve 23 and 33 be connected on the suction catheter 12, suction catheter 12 can be connected on the source 10 through dismountable coupling 11.

Piston rod 27 and 37 removably is connected on one first motor 41 and one second motor 42 through one first coupling 43 and one second coupling 44 respectively.The parts that dotted line comprises among Fig. 1 constitute a disposable assembly, and this assembly is placed in the aseptic packaging after being sterilized by the manufacturer, and offers whole seller and/or end user with this form.

CD-ROM drive motor 41 and 42 is connected on the driving device (not shown) of control CD-ROM drive motor 41 and 42, and piston 25 and 35 is pressed in the time course shown in Figure 2 with the S path movement like this.As shown in Figure 2, the S value rises (rising of curve S shown in Fig. 2) in imbibition cycle, input period ratio output cycle (curve in this process among Fig. 2 descends) much shorter.And, the output cycle with time per unit inner volume total amount (through piston 25 and 35 and cylinder 26 and 36 limit) remain unchanged and the mode that not have to descend overlaps, thereby guarantee that from the source 10 is constant to the flow of liquid maintenance of operation apparatus 1.In the water jet operative process, can quote habitual force value, about 20 to 100 crust.Pump 20,30 preferable pump outputs are each 2 to 100 milliliters.

Embodiments of the invention shown in Figure 3; Mainly be to be provided with one the 3rd pump 50 and the 3rd pumping conduit 51, the 3rd suction catheter 52, the 3rd inhaling valve 53 with embodiment difference shown in Figure 1; One the 3rd output valve 54; One the 3rd piston 55, the 3rd cylinder 56 and one the 3rd piston rod 57, and one the 3rd CD-ROM drive motor 45 and the 3rd coupling 46 that is connected with the 3rd piston rod 57.

In addition; In this embodiment of the present invention, be provided with the control device (not shown) that is used for motor 41,42 and 45, make that imbibition cycle and output cycle are identical just, in this case; Three cycles are set to overlap each other and have guaranteed a stable pumping output, the i.e. pump output of time per unit.This illustrates that in Fig. 4 wherein each pump 20,30 and 50 pairing curves indicate with 20,30 and 50 these three corresponding digital.

Fig. 5 has shown another embodiment of the present invention, except not being equipped with independently the motor 41,42,45, with embodiment illustrated in fig. 3 consistent.Driving device 40 comprises an independent motor 64 and the axle 65 that is connected with actuating device 60, and this actuating device 60 comprises three gear parts 61,62,63.Each gear parts is driving pump 20,30,50 respectively. Gear parts 61,62 and 63 can be designed to such as disk cam mechanism, therefore can be set the working cycle according to the shape of similar waveform shown in Figure 4.Can certainly use one according to embodiment illustrated in fig. 1 and the design driving device 40.

List of reference numbers

1 operating theater instruments

2 pinch valves

10 sources

11 couplings

12 suction catheteies

20 first pumps

21 first pumping conduits

22 first suction catheteies

23 first inhaling valves

24 first output valves

25 first pistons

26 first cylinders

27 first piston connecting rods

30 second pumps

31 second pumping conduits

32 second suction catheteies

33 second inhaling valves

34 second output valves

35 second pistons

36 second cylinders

37 second piston rods

40 driving devices

41 first motors

42 second motors

43 first couplings

44 second couplings

45 the 3rd motors

46 the 3rd couplings

50 the 3rd pumps

51 the 3rd pumping conduits

52 the 3rd suction catheteies

53 the 3rd inhaling valves

54 the 3rd output valves

55 the 3rd pistons

56 the 3rd cylinders

57 the 3rd piston rods

60 actuating devices

61 transmission components 1

62 transmission components 2

63 transmission components 3

64 motors

65

Claims (7)

1. carry the transport device for sterile media of sterile liquid to an operational tool (1) from a source (10), comprising:

The pump (20,30) that metering is carried has one and sucks that circulation sucks liquid and an output circulation comes atomizing of liquids,

Conduit and valving (12; 21 to 24; 31 to 34), be used for being connected to pump (20,30) on source (10) and the operational tool (1),

Driving device (40) is used for driving pump (20,30), like this

Pump (20,30,50) comprises three pump chambers at least, and driving device (40) is configured to the mode that pump chamber imbibition cycle and output cycle overlap each other, and the mode that overlaps each other of pump chamber output cycle.

2. conveyer device as claimed in claim 1 is characterized in that, said operational tool (1) is configured to the operating theater instruments of water jet operation usefulness.

3. according to claim 1 or claim 2 conveyer device is characterized in that, said driving device (40) is configured to fluid and supplies with operational tool (1) with a constant compression force.

4. conveyer device as claimed in claim 3 is characterized in that, said driving device (40) removably is connected to pump (20,30,50).

5. conveyer device as claimed in claim 4 is characterized in that, said pump (20,30,50) and/or conduit (12; 21,22; 31,32; 51,52), together with valving (23,24; 33,34; 53,54), be configured to a disposable assembly.

6. like claim 1,4, one of 5 described conveyer devices, it is characterized in that said each pump chamber (25,26 that is used for; 35,36; 55,56) driving device (40) comprises an independent controlled CD-ROM drive motor (41,42,45).

7. conveyer device as claimed in claim 6; It is characterized in that; Said driving device (40) comprises an independent controlled CD-ROM drive motor (64) and a gear drive (60); This gear drive (60) has a gear train power shaft that links to each other with CD-ROM drive motor (64) and is used for each pump chamber (25,26; 35,36; 55,56) gear train output shaft.

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