NO20240412A1 - A medical manual suction device - Google Patents

Description

Medical manual suction pump

Introduction

The invention relates to a medical emergency manual suction pump for field use. In the field the emergency personnel usually carry much equipment. Emergency operations may take place under conditions wherein it is not advantageous to be dependent on batteries, or where there is a risk that electrical power may not be available. Thus a light, manual suctions pump may be required.

The manual pump device of the present invention has a suction hose arranged to be inserted in a patients' mouth or throat, to suction clean the passage to the lungs or the nose in order to clear passages for bodily fluids and more or less soft particles therein which otherwise prevent the patient from breathing. The manual pump device has in an embodiment of the invention a bodily fluids collection bag for receiving slime, stomach contents including food particles, and water and blood.

Background art

Very simple manual suction pumps for use in the field may comprise of a suction hose connected to an elastic compressible, self-inflatable balloon which as such works as the pump, please see Fig.2a. The balloon is compessed manually and provides a weak vacuum when returning to its initial expanded state. A bellows-type manual pump wherein the bellows also is the collector chamber is illustrated in Fig.22b.

Other suction pumps have a rigid or semi-rigid collector bottle connected between a manual vacuum pump and the suction hose, please see Fig.21a and Figs.22d and 22e. The collector bottle of such pumps us subject to vacuum pumping and must be rigid in order not to collapse due to the vacuum generated by the downstream vacuum pump. A disadvantage of having an intermediate rigid collector bottle is the loss of pressure via the bottle in the form of increased fluid path length, and if the bottle is parly flexible, hysteresis loss in the bottle, which both reduce the efficiency of the suction pump. Another problem with a rigid or semi-rigid collector bottle is importanly that the bottle itself interfers with the patient's face, which is impractical to the operator and highly inconvenient for the patient if the patient is awake or awakens. Moreover a bottle requires excess baggage space for the operator in the field. Any excess baggage for the field operator, such as ambulance personnel, is a disadvantage as they carry much essential equipment anyway.

Electrical suction pumps exist, please see Fig.22c, but are heavy and depend on external power or batteries and re-charging, and may fail electrically in field use such as under wet conditions or rough use. An electrically powered suction pump may often be installed in an ambulance or at an emergency ward but may be impractical to carry in the field during a rescue operation.

The present pump advantageously has a rather straight fluid path through the pump and a rear collection bag which does not interfer with the patient. It is lightweight and takes up little volume before use.

Brief summary

The invention is a medical manual suction device,

comprising

- a manualy driven pump (3) with

- a piston (4) dividing a pump cylinder (3c) into a suction chamber (3a) and an exhaust chamber (3b),

- a pump inlet (2) to said suction chamber (3a), with an inlet check valve (6),

- a suction hose (1) on said pump inlet (2),

- a piston rod (5) with a manual actuator (8, 8a, 5p) and a return mechanism (17) , - an outlet check valve (7) arranged in said piston (4) leading from said suction chamber (3a) to said exhaust chamber (3b),

- an exhaust chamber aperture (11).

Further embodiments of the invention are defined in the attached dependent claims.

Brief figure captions

The invention is illustrated in the attached drawing Figures.

Fig.1 is a general illustration and longitudinal vertical section through the manual suction pump of the invention, with a central body with a pump actuator mechanism and provided with an outlet channel in a central body between the pump cylinder and a hollow grip, which hollow grip also forms a connector sleeve to an inflatable collection bag. A connector sleeve at the fore end of the pump for a suction hose (sketched) is illustrated to the left.

We have used the terms "vertical" for the position of the long axis of the hollow grip, and "horizontal" for the section plane of the pump and section body shown in Fig 6, but the person skilled in the art will know that the device of the invention may be held in any position and pointed in any direction during use.

Fig.2 is a vertical section view of the manual suction pump's vacuum pump cylinder and the central body with the piston rod, and the hollow grip with the pump handle. An outlet valve element 7 f is illustrated in a closed and open (dashed outline) position .

Fig.3 is a vertical cross section and view of the pump cylinder and the central body.

Fig.4 is a vertical section and view along B-B looking toward a first end wall (3f) of said pump cylinder (3), with an inlet flap valve element (6f) of said inlet valve (6).

Fig.5 is a cross section and view of the pump cylinder along B-B looking toward a first end wall (3f) of said pump cylinder (3), but without said inlet flap valve element (6f) of said inlet valve (6), the view revealing the pump inlet (2) and the release channel (6r). Fig 5 also shows a hole (6h) through said first end cylinder wall (3f) for a flap valve stem (6p) to be inserted from the inside of the suction chamber (3a) through the end cylinder wall (3f).

Fig.6 is a horizontal section of the pump and central section along A-A of fig.2.

Fig.7 is a section view along B'- B' of Fig.6, the same section as B-B of Fig 2, of inlet check valve element 6f, a flap valve, on end cylinder wall 3f, as in Fig 4.

Fig.8is a section view along B'- B'- of Fig.6, the same section as B- B of Fig 2, of the cylinder (3) and view of the end cylinder wall (3f).

Fig.9 is a section view along F'-F' of Fig.6 showing the central body (15) with the actuator mechanism including piston rod guide pins (5p) for transferring force from the actuator grip (8a) to the piston rod (5), and a return spring (9).

Fig.10 is a vertical section view of of the manual suction pump's vacuum pump cylinder (3) and the central body (15) with the piston rod (5), and the hollow grip with the pump handle. The outlet valve element 7 f is illustrated in a closed and open (dashed outline) position. The wide opening flap range of the flap valve ( 7f) is illustrated. This wide flap range is allowed due to the transverse bridge fork (4B) on the fore end of the piston rod (15), the bridge fork straddling the width of the flap valve element (7f) as illustrated in Fig.11 below. If the piston rod (5) was connected directly into the centre of the pump piston (4) the space for the flap valve (7f) would otherwise be much smaller, resulting in a more restricted passage through check valve (7).

Fig.11 is a section view of the pump (3) along C-C of Fig.10. The transverse bridge fork (4B) on the fore end of the piston rod (15), straddles the width of the flap valve element (7f). This arrangement of the transverse bridge fork (4B) on the fore end of the piston rod (15), the bridge fork straddling the width of the flap valve element (7f), alows the wide flap range between the closed and open flap valve (7f) illustrated in Fig.10 above.

Fig.12 is a section view of the pump (3) along C-C of Fig.10, similar to Fig.11. The transverse bridge fork (4B) on the fore end of the piston rod (15) is shown, but witout showing the flap valve (7f) on the pump piston (4).

Fig.14 is a section view along C'-C' of Fig.13 with piston check valve element (7f) on the piston (4) and the piston transverse bridge (4B) straddling the check valve element, flap valve (7f).

Fig.15 is a section view along C'-C' of Fig.13 without the piston check valve element (7f). Fig.15 shows the same as Fig.12.

Fig.16 is a section view along D'-D' of the pump cylinder (3), showing a bellow (10) and a rear cylinder wall (3d) of the pump cylinder (3). Further, an exhaust chamber aperture (11) through the gasket (10g) leads to a fluid outlet channel (12) through the central body (15) and has an outlet to the hollow shaft which further holds the inflatable collector bag (20i) on the hollow main grip (16), please also see Fig.10.

Fig 17 illustrates in a partly transparent, isometric view of the central body (15) with the actuator mechanism including piston rod guide pins (5p) for transferring force from the actuator grip (8a) to the piston rod (5), and a return spring (9).

Fig.18 illustrates in a perspective view the rear cylinder wall (3d) with the cylinder gasket (10g) removed, and a baoyonet mount for the pump cylinder (3) at the rear cylinder wall (3d) at the fore end of the central body (15). The central body (15) has the outlet fluid channel (12) with an aperture (11) in the rear cylinder wall (3d).

Fig.19 illustrates the piston rod (5) guide pins (5p) on a piston guide portion (5g) running in the central body (15), and a lower slide block (8s) which forms a support along the hollow main grip (16) for the pivot point of the actuator grip (8a), which prevents the actuator grip (8a) fork to excert transverse forces onto the piston rod (5) guide pins, ensuring a purely axial force on the piston rod (5) in the pump (3) and the piston rod guide portion (5g) in its channel in the central body (15), reducing friction and preventing the piston from getting stuck.

Fig.20 illustrates in a perspective and section view an upper portion of the fork portion of the actuator grip (8a) coupled to the guide pins (5p) on the piston rod guide portion (5g) of the piston rod (5), and a section near the aft end of the fluid channel (12).

Figs 21a and 21b. illustrates the principles of background art with a rigid collection chamber arranged between the inlet suction hose and the vacuum pump, and the present invention's principle that the mass flow from the patient passes directly through the pump. Fig 21a compares with embodiments illustrated in Fig.22d and 22e.

Fig.22a - e illustrates background art examples of

Fig.22a: a simple compressible balloon pump at the upper left,

Fig.22b: a direct collection vacuum pump wherein the bodily fluids are collected in a vacuum bellow (to the right) ,

Fig.22c: an electrical, advanced pump to the lower left, and

Figs.22d and 22e: two rigid bottle collector chamber pumps.

Embodiments of the invention

The invention provides a medical manual suction device. In an embodiment it comprises a manualy driven pump (3), please see Fig.1, Fig.2 attached. The pump comprises a slidable piston (4) dividing a pump cylinder (3c) into a suction chamber (3a) portion of the cylinder, and an exhaust chamber (3b) portion of the cylinder. There is a pump inlet (2) to said suction chamber (3a), with an inlet check valve (6), and a suction hose (1) on said pump inlet (2), and there is a piston rod (5) with a manual actuator (8, 8a, 5p) and a return mechanism (17). There is an outlet check valve (7) arranged in said piston (4) leading from said suction chamber (3a) to said exhaust chamber (3b), leading to an exhaust chamber aperture (11).

The invention provides, in other words, a medical manual suction device, comprising

- a manualy driven pump (3) with a suction hose (1) on a pump inlet (2) with a inlet check valve (6) through a first end cylinder wall (3f) of a suction chamber (3a) of a pump cylinder (3),

- a piston (4) dividing said pump cylinder (3c) into said suction chamber (3a) and an exhaust chamber (3b),

- a piston rod (5) with a manual actuator (8, 8a, 5p) and a return mechanism (17), and an outlet check valve (7) arranged in said piston (4) leading from said suction chamber (3a) to said exhaust chamber (3b),

- an exhaust chamber aperture (11) from said pump cylinder (3).

The present invention's medical manual suction device sucks the bodily fluids from the patient directly into the suction chamber, forces it further through the piston upon piston return, and the subsequent stroke of the piston forces the bodily fluids out through the exhaust chamber aperture. The fluid doesn't reverse direction during the pumping with the present invention, it is always fed forwardly. Advantageously the exhaust chamber aperture (11) is indirectly connected to an inflatable collection bag for bodily fluids.

In an embodiment of the invention said inlet check valve (6) from said pump inlet (2) to said suction side chamber (3a) is arranged for opening when vacuum arises in said suction chamber (3a) when said piston (4) is pulled away from a first end wall (3f), and closing when pressure increases in said suction side chamber (3a).

In an embodiment of the invention said outlet check valve (7) from said suction side chamber (3a) to said exhaust side chamber (3b) is arranged for closing when said piston (4) is pulled away from said first end wall (3f), and for opening when pressure increases in said suction side chamber (3a). Any leakage in or around the piston such as due to small trapped particles in the bodily fluid, will just make the particles leak the right way upon return of the piston and be forwarded.

In an embodiment of the invention said inlet check valve (6) comprises an inlet flap valve element (6f) , please see Fig.3, Fig.4, and Fig.5, the flap valve element (6f) made of a flexible material such as silicone rubber.

A significant advantage with the outlet check valve (7) arranged through the piston (5), please see Fig.19, is that any leak in the valve (7) due to delay during the closing of the flap valve (7f) or particles trapped in the flap valve, will just go back to the piston chamber. Any leakage around and past the piston (5), such as particles trapped in the wiper lip (4L), please see Fig.12, will go the way it should pass: downstream to the exhaust chamber (3b) and futher to the exhaust chamber aperture (11). A fluid portion is sucked through the inlet check valve (6), and filled into the suction chamber (3a) depending on the stroke length applied, and the outlet check valve (7) will remain closed. The fluid portion will remain in the suction chamber (3a) until the piston (4) starts returning. When the piston starts returning, the pressure in the suction chamber (3a) will increase; the inlet check valve (6) will close, and the outlet check valve (7) will open to the exhaust chamber (3b), and all or part of the fluid portion will be forced to the exhaust chamber (3b). The next stroke with the piston (4) will force all or part of the fluid portion to the exhaust chamber aperture (11). In the present inveniton we advantageously let the bodily fluid pass through the pump and the piston, please see Fig.21b, while in some of the prior art the pump is dry, which may superficially seem as an advantage of the prior art, but complicates the flow setup and requires the rigid canister. Pumps of the kind used in Fig.21a and 21b are cheaply manufactured and for one time use, disposable, and there is little reason to not contaminate the pump with bodily fluids.

In an embodiment of the invention, said pump inlet (2) is arranged through a first end cylinder wall (3f) of said pump cyllinder (3c) to said suction chamber (3a). Please see Fig.1. In this embodiment the pump inlet (2) is axial or parallel with the pump cylinder (3c) and at least the suction hose (1) part being closest to the pump inlet (2) is parallel with the pump cylinder (3c); in an embodiment the suction hose (1) is flexible and slightly curved, adapted for being inserted into the patient's mouth cavity.

The suction hose (1), please see Fig.1, is arranged to be inserted in a patient's mouth or nose. The suction hose (1) is of the type of suitable length and diameter to be put into a patient's mouth, nose, throat, trachea to the lungs, pharynx to the stomach, a bronchi, usually of flexible plastic material, with sufficient flexibility and having a rounded tip not being harmful to the skin or mucous membranes of a patient.

The manual actuator (8, 8a, 5p) arranged for manually retracting said piston rod (5) from a forward position. In practice, one has to pump using at least 2 strokes, the initial stroke to fill fluid into the suction chamber (3a) (then the exhaust side chamber (3b) initially is void), and the second stroke to pump the fluid from the suction chamber (3a) to the exhaust chamber (3b). The process continues successively with successive strokes an brings the bodily fluids forward.

In the illustrated embodient in Fig.1, Fig.1A-1, the flap valve (6, 6f) is provided with a projection, a valve stem (6p) with a barbed retainer edge, the valve stem (6p) snap inserted from the inside of the suction chamber (3a) through a hole (6h) through said first end cylinder wall (3f), please see Figs.1, 3, 4, and 5.

Vacuum release channel

In an embodiment of the invention, please see Fig.6 and Fig.8, the inner face of the end cylinder wall there is an inlet valve vacuum release channel (6r) for manual vacuum bleeding by pushing laterally on the outer part of pressing valve stem (6p) which will open the release channel to atmosphere and release vacuum in suction tip. This vacuum release is useful if the operator unintentionally has pumped the vacuum hose's outer end to soft tissue in the mouth cavity and has to release the tip from the soft tissue.

Outlet flap valve

In an embodiment of the invention, please see Figs.6, 7, and 8, said outlet check valve (7) is an outlet flap valve (7f) of a flexible material such as silicone rubber. It covers an aperture in the pump piston (4) from the rear side. In an embodiment the outlet flap valve (7f) is provided with an outlet valve stem (7p) with a barbed rim fixed through a hole in the piston (4), please see Figs.6 and 8. The aperture of the piston continues in an embodiment to a lateral channel (5L) on the fore end of the piston rod (5) so as for fluid and particles to pass through the open flap valve (7f) to the exhaust chamber (3b).

In an embodiment of the invention said manual actuator (8, 8a, 5p) is arranged for retracting said piston rod (5) from a forward position, please see the pistol-like embodiment illustrated in Fig.1.

Transverse bridge fork

In an embodiment of the invention, please see Fig.6, a transverse bridge fork (4B) on the fore end of the piston rod (15) straddles the width of said flap valve element (7f). This arrangement of the transverse bridge fork (4B) on the fore end of the piston rod (15), the bridge fork straddling the width of the flap valve element (7f), alows the wide flap range between the closed and open flap valve (7f) illustrated in Fig.10.

Valve passage diameters

In an embodiment of the invention, the passage diameter through inlet valve (6) is less than the passage diameter of the outlet valve (7) through the piston, please see Fig.1, and please compare the passage diameter (Ø6) of inlet valve (6) in Fig.5 with the passage diameter (Ø7) of piston outlet (7) of Fig.12. An advantage of this increasing diameter is that any particle size which may enter the suction chamber (3a) will not block the piston outlet valve (7), thus there is little risk of particles blocking the pump unless they are jammed before the inlet. This feature provides further advantages to the use of the piston's transverse bridge fork (4B) at the rear of the piston which preserves the good passage through the outlet valve.

Bias spring

In an embodiment of the invention said return mechanism (17) comprises a bias spring (9) on said piston rod (5), arranged for excerting a bias force on said piston rod (5) toward said first end cylinder wall (3f). In practice, the piston (4) will be manually pulled away from an initial position near the inlet valve (6), wherein the initial position is due to the bias spring (9), and the bias spring (9) will force the piston to return towards the end cylinder wall (3f) when the manual pull force ceases, and the contents in the suction chamber (3a) will advantageously be forced through the outlet valve (7) to the exhaust chamber (3b).

Bellow

In an embodiment of the invention a bellow (10) is arranged on said piston rod (5), insulating said piston rod (5) from surrounding fluids in said exhaust chamber (3b). In this embodiment, the bellow envelopes and seals the piston rod and avoids bodily fluids to enter the pump actuation mechanism. Here, the bellow is illustrated as wide and short, but may have slenderer and less radially extensive shape. The bellow may itself contribute to a bias force on the piston (4) in the direction of the inlet valve (6) and contributes in the same direction as the bias spring (9). Please refer to Fig.1. The outside surface of bellow (10) guides liquid and air in the exhaust chamber (3b) further to the exhaust chamber aperture (11) and in an embodiment further to an outlet channel (12) through and along inside the central body, and into a main grip cavity (14) which further leads to the inflatable collector bag (20i) which receives bodily fluids and expands while being filled.

Inflatable collector bag

The inflatable collector bag (20i) please see Fig.1 and Fig.21b, may be arranged in a folded/ packed state into the main grip body (16), please see Fig.1, right hand side and lower right hand side. The fluid pressure resulting from the pumping action will inflate the collector chamber bag (20i) with air and bodily fluids and will soon after it starts filling extend more and more out of the shaft body. The collector chamber bag (20i) may be pulled off and sealed, and replaced by a spare collector chamber bag (20i). Please note that the present invention will not cease to function in case of lack of the collector chamber bag, the pump (3) will continue to function and the patient's mouth cavity and throat may still be cleared for slime or vomit, the lifesaving operation may continue, despite the operator and / or the patient may become soaked and contaminated.

Relief valve

In an embodiment of the invention, at the top of the main grip cavity (14) there is arranged a relief valve (14). The relief valve will have a pre-set opening pressure for releasing excess air, and to prevent spill when the device is laid down sideways in a filled or partially filled state of the collector chamber bag. The pre-set opening pressure forces inflation of the collector chamber bag when being pumped with liquid and / or air. In an embodiment of the invention a filter holder (19) for an air filter is arranged at the outlet of the relief valve (18). An air filter is used in order to prevent contaminating particles and droplets to escape with air from the filling collector chamber bag (20i).

With the bellow, a further advantage is that any leak past the piston will to the way it shall pass: into the exhaust chamber (3b) and past the internal bellows and further to the exhaust chamber aperture (11).

In an embodiment of the invention said return mechanism (17) comprises said bellow (10) arranged for excerting a bias force on said piston rod (5) toward said first end cylinder wall (3f).

Wiper lip

In an embodiment of the invention said piston (4) comprises a circumferential wiper lip (4L) directed towards the exhaust chamber (3b), please see Fig.1. The wiper lip will slightly expand and excert a sealing force radially toward the cylinder wall when the piston (4) is pulled rearwardly, i.e. away from the first end cylinder wall (3f).

In an embodiment the inflatable collection bag (20) is arranged to, before filling, to be pre-packed in a main grip shaft body (8m) arranged with said manual actuator's (8) pump handle (8h), and may be prearranged with an elastic lock ring around the end of the pistol grip pump handle (8h); it will emerge from the open shaft when pumping starts.

An advantage of the invention over background art with a rigid collection bottle arranged between the suction hose and the pump, is that the suction path is shortened, and there occurs less energy loss in the present invention's direct vacuum path than in the background art (see Fig.21a) with loss from a suction hose via any collection container and an inlet valve to a wet suction chamber during pump suction action. A rigid collection bottle is absent in the present invention.

Another advantage of the present invention is that the inflatable collection bag initially takes less space before use, when empty, the collection bag (2) may be packed in a compressed state before use.

A further advantage of the present invention over the background art is that the collection bag does not interfer with the patient's face as it is behind/below the grip handle at the rear of the apparatus.

A still further advantage of the invention is that the collection bag may be replaced during use, or simply removed in emergency: the device will work if collection bag is removed.

In an embodiment of the invention, said outlet check valve (7) is arranged through said piston (4) excentrically relative to said piston rod (5), and a bellow (10) enveloping said piston rod (5) and fluidly isolating said piston rod (5) through said rear cylinder chamber (3b), and with a rear chamber outlet (11) through a rear cylinder wall (3d) and the rear bellow wall to an outlet channel (12) leading to said collection container (2).

A rear portion of the bellow also constitutes a rear gasket sealing between the pump cylinder wall and the rear cylinder wall.

An advantage of having the bellow enveloping the piston rod is that bodily fluids do not interfer with the piston rod nor the actuating mechanism nor the return spring for the piston rod. The bellow (10) guides the bodily fluids through and lumps (think of vomit) in the rear cylinder chamber (3c) further to the outlet channel (12).

An advantage of the embodiment is that any fluid leakage around the piston may only leak in the desired direction.

Components list

Claims (18)

1. A medical manual suction device,

comprising

- a manualy driven pump (3) with

- a piston (4) dividing a pump cylinder (3c) into a suction chamber (3a) and an exhaust chamber (3b),

- a pump inlet (2) to said suction chamber (3a), with an inlet check valve (6),

- a suction hose (1) on said pump inlet (2),

- a piston rod (5) with a manual actuator (8, 8a, 5p) and a return mechanism (17) ,

- an outlet check valve (7) arranged in said piston (4) leading from said suction chamber (3a) to said exhaust chamber (3b), and

- an exhaust chamber aperture (11).

2. The manual suction device of claim 1, wherein said pump inlet (2) is through a first end cylinder wall (3f) of said pump cyllinder (3c) to said suction chamber (3a).

3. The manual suction device of any of of the preceding claims, wherein

- said manual actuator (8, 8a, 5p) arranged for retracting said piston rod (5) from a forward position.

4. The manual suction device of any of the preceding claims, wherein

- said return mechanism (17) comprises a bias spring (9) on said piston rod (5), arranged for excerting a bias force on said piston rod (5) toward said first end cylinder wall (3f).

5. The manual suction device of any of the preceding claims, comprising

- a bellow (10) on said piston rod (5) insulating said piston rod (5) from surrounding fluids in said exhaust chamber (3b).

6. The manual suction device of claim 5, wherein

- said return mechanism (17) comprises said bellow (10) arranged for excerting a bias force on said piston rod (5) toward said first end cylinder wall (3f).

7. The manual suction device of any of the preceding claims, comprising

- a flexible collection container (20) arranged for receiving fluids ( ) directly or indirectly from said exhaust chamber aperture (11).

8. The manual suction device of claim 7, wherein said flexible collection container (20) comprises an inflatable bag (20i) connected directly or indirectly to said exhaust chamber aperture (11), said inflatable bag (20i) initially being stored in a packed or folded state before use of said pump (3), and arranged for being inflated by fluids received from said exhaust chamber aperture (11).

9. The medical manual suction pump of any of the preceding claims, wherein

- said inlet check valve (6) from said pump inlet (2) to said suction side chamber (3a), is arranged for opening when vacuum arises in said suction chamber (3a) when said piston (4) is pulled away from said first end wall (3f), and closing when pressure increases in said suction side chamber (3a).

10. The medical manual suction pump of any of the preceding claims, wherein

said inlet check valve (6) is an inlet flap valve (6f) of a flexible material such as silicone rubber.

11. The medical manual suction pump of any of the preceding claims, wherein

- said outlet check valve (7) from said suction side chamber (3a) to said exhaust side chamber (3b) is arranged for closing when said piston (4) is pulled away from said first end wall (3f), and for opening when pressure increases in said suction side chamber (3a).

12. The medical manual suction pump of any of the preceding claims, wherein

said piston (4) comprises a circumferential wiper lip (4L) directed towards the exhaust chamber (3b).

13. The medical manual suction pump of any of the preceding claims, wherein

said outlet check valve (5) is an outlet flap valve (7f) of a flexible material such as silicone rubber.

14. The medical manual suction pump of any of the preceding claims,

wherein said inlet check valve (6) comprises an inlet vacuum release channel (6r) for manually operating said inlet check valve so as for releasing undesired vacuum in the suction hose (1).

15. The medical manual suction pump of any of the preceding claims,

wherein a transverse bridge fork (4B) on the fore end of the piston rod (15) straddles the width of said flap valve element (7f).

16. The manual suction pump of any of the preceding claims, wherein the passage diameter through inlet valve (6) is less than the passage diameter of the outlet valve (7) through the piston.

17. The device of any of the preceding claims,, wherein the inflatable, replacable collection bag is packed in a main grip shaft body (8m) arranged with said manual actuator's (8) pump handle (8h) at a rear portion of the manual suction pump.

18. The device of any of the preceding claims, wherein said outlet check valve (7) is arranged through said piston (4) eccentrically of said piston rod (5), and a bellow (10) enveloping said piston rod (5) and fluidly isolating said piston rod (5) through said rear cylinder chamber (3b), and with a rear chamber outlet (11) through a rear cylinder wall (3d) to an outlet channel (12) leading to said collection container (2).

19: The device of claim any of the preceding claims, wherein said manual actuator (8) comprises a hollow main handle (8m) and a pump handle (8m), wherein said outlet channel (12) ends up in the top of said hollow main handle (8m) wherein an inlet portion of said collection bag (2i) is arranged sealingly to said outlet channel (12) to receive said bodily fluids pumped.