CN104274869A - Medical suction system - Google Patents

Abstract

A disposable inner container/ top cover system with a rigid cylinder has adhesive sealing which can provide an improved sealing performance and effectively reduces possibilities of overflowing and leakage. An inner container is provided with a flange, a top cover is provided with an adhesive, and the adhesive is fixed on the inner surface of the top cover and the flange of the inner cylinder during installation to provide sealing.

Description

Medical suction system

Technical field

The present invention relates to medical suction system, particularly, relate to a kind of medical suction system utilizing rigid cartridge to connect semi-rigid disposable inner bag, thus improve sealing, prevent excessive.

Background technology

The medical suction system with rigid cartridge and a semi-rigid disposable inner bag of routine be accommodated in cylinder of traditional type has many drawbacks.Semirigid inner bag is easy to break, and it is weak that the structure of the installation of system top cover and mode make this kind of system be highly brittle, and easily reveals and excessive.Therefore, need to make improvements.

Summary of the invention

The medical suction system that the present invention relates to comprises cylinder, the top cover that can be accommodated in the inner bag in cylinder and be arranged on cylinder and inner bag.

Top cover has the peripheral seal member being used as location extended out from the inner surface of top cover, in order to a part for rigidity of support cylinder, thus air and outside being placed in cylinder inner bag between sealing is provided.Peripheral adhesion substance adheres to the inner surface of the top cover near peripheral seal member, when top cover is installed on inner bag, adhesion substance can positioningly be sticked on the flange of inner bag, thus forms sealing between the inner side and outer side part of inner bag.

Inner bag and top cover are disposable.When inner bag fills pumping liquid, inner bag can remove from cylinder and top cover still keeps being arranged on inner bag by binding agent.Inner bag and top cover have improved sealing characteristics, are compared to conventional inner bag/roof system, effectively can reduce probability that is excessive and that reveal.

Accompanying drawing explanation

Fig. 1 is the front view of suction system according to the present invention.

Fig. 2 is the cross-section front view of system shown in Figure 1.

Fig. 3 is the cross-sectional side view of system shown in Figure 1.

Fig. 4 shows the view of Fig. 3 after some assembly of a place.

Fig. 5 is the partial cross-section front view of Fig. 1 system, the top cover that display is installed.

Fig. 6 is partial cross-sectional side view detail view, the top cover that display is installed.

Fig. 7 shows the embodiment of the inner bag that Fig. 1 system uses.

Fig. 8 shows the embodiment according to suction system of the present invention.

Detailed description of the invention

First with reference to figure 1-6, the present invention relates to a kind of medical suction system 10, it has rigid cartridge 12, semi-rigid inner bag 14 and top cover 16.Fixed mount 18 for system 10 is fixed on wall or other supporting surfaces, and for placement system 10, makes itself and negative pressure source V--as medical suction tube--and carry out fluid and be connected.

Cylinder 12 is installed on fixed mount 18 and remains fixed in certain place as persistent firmware, in the room of such as hospital.Inner bag 14 and top cover 16 are the single use parts of system 10.Therefore, when inner bag 14 fills pumping liquid substantially, inner bag 14 is removed from cylinder together with top cover 16 and is abandoned.Compare conventional inner bag/roof system, inner bag 14 and top cover 16 are of value to raising sealing and effectively reduce possibility that is excessive and seepage.

Rigid cartridge 12 is in fact be made up of rigid material, preferably as clear as crystal plastic material, such as Merlon.The polycarbonate resin of preferred material to be Dow Chemical's code name be Calibre201-15.Cylinder 12 has enough rigidity in normal conditions of use, can not break and lose.Itself is cup-shaped for cylinder 12, has bottom 20 and extends to the peripheral sidewall 22 on top 24 from bottom.But, for providing desirable anti-excessive and anti-leakage characteristic to system 10, cylinder 12 is set so that its upper end 24 has the required form matched with inner bag 14 and top cover 16.Vacuum port 26 runs through sidewall 22 to be connected with fixed mount 18, and the inner side of cylinder 12 (when inner bag is arranged on wherein, also comprising the outside of inner bag 14) is communicated with fluid between negative pressure source.Therefore, be understandable that, when the system 10 of use, pressure equal is in fact applied in the inner side and outer side of inner bag 14.

Detailed reference diagram 6, the top 24 of cylinder 12 comprises the first peripheral vertical part 28 defined by the top of sidewall 22, and extend along sidewall 22 outside, and from the radially outer second peripheral vertical part 30 of first component 28, it is configured to the height extending beyond parts 28, and is used for being defined in the blind hole 32 between the first vertical part 28 and the second vertical part 30.As described below, to the selection of the height (i.e. the degree of depth in hole 32) of parts 28, meet exceed that inner bag 14 may expand in use latent distance.Noun " periphery " is used to describe the characteristic of surrounding herein.But, be understandable that, although cylinder, inner bag and top cover show as have circular cross section, also can use other shape of cross section, such as have embody respective shapes non-circular around or the ellipse of peripheral structure, triangle, square.

First vertical part 28 is preferably formation upright rib to support inner bag 24, hereafter can more absolutely prove.In order to strengthen the snapping relationship between cylinder 12 and top cover 16, the second vertical part 30 for buckle top cover 16 also comprises the end that has flange, and this flange has the flat surface 36a on top.In addition, vertical part 30 has the chamfered edge shape edge, inside 38 in close hole 32 equally, in order to mate top cover 16 in order to provide sealing between the outside and air of inner bag 14, below will describe in detail.The preferred direction of top 38a at edge 38 be shallow decline thus for top cover 16 facility settle guide is provided.

Inner bag 14 can have the plastic construction of conventional molding, is cut to the suitable size meeting cylinder 12 inside.Inner bag 14 has bottom 40 and a surrounding's sidewall 42 extending to top end opening 44 from bottom, outward extending peripheral flange 46 is defined at top end opening 44 place, flange 46 is smooth in the horizontal direction, and extends from top 24 level (relative to the longitudinal major axis of the routine of inner bag 14).

In a preferred embodiment, preferred inner bag 14 is injection molding molding instead of hot briquetting.Observed injection mo(u)lding inner bag can riser wall intensity and opposing for traditional heating molding inner bag incidental explosion.Inner bag 14 is equally preferably semi-rigid, because phase specific rigidity inner bag, its cost is lower.That is, inner bag 14 substantially can self-sustained, and can not self-sustained unlike plastic bag, but equally frivolous with disposable plastics watered glass for drinking and be rich in toughness.In this, injection molding technology is used to make the preferred material of semi-rigid inner bag for resinous polymer, such as acrylic resin copolymer, this material obtains by mountain, the Flint resource company (Flints Hills Resources, LP) being positioned at Wichita city, the Kansas State.Particularly preferred resin can adopt mountain, Flint resource company number to be the product of P9-053X.The another one advantage using injection molding technology is that this technology can make heap lamination be placed in the bottom 40 of inner bag 14.Heap lamination contributes to providing gas channels thus avoids the pressure of stacking inner bag to adhere to, and impels the separation of stacking inner bag 14.

With reference to Fig. 7, illustrate the embodiment of an inner bag 14 ', inner bag 14 ' is unanimous on the whole with inner bag 14, except flange 46 ' herein comprises outward extending a plurality of orientation tab 46a.

Top cover 16 preferably has Unitarily molded constructed in plastic material and comprises the peripheral snap ring 50 having and define neighboring, extend from the inner surface of top cover 16, and snap ring 50 interval and radially inner peripheral seal ring 52, and the peripheral guide ring 54 in sealing ring 52 inside.As the jointing material 56 be applied between sealing ring 52 and guide ring 54 of peripheral ring.Part or all of or the extra port of different port 58a-58d defines by top cover 16 inside of guide ring 54, so as with inner bag 14 configured in fluid communication of the system 10 of assembling.

With reference to Fig. 6, the preferable shape of the inner surface 50a of snap ring 50 is make its shape that can engage flange 36.Such as, as shown in the figure, inner surface 50a is conventional concave surface, and flange 36 is conventional convex surfaces, therefore when top cover 16 is installed, can engage rightly each other.Be understandable that, other matching form also can be adopted to close.

Therefore inner sealing ring 52 can provide an external conical surface 52a with the chamfered edge shape edge, inside 38 of vertical part 30 making it and engage cylinder 12 suitably and the interface along edge 38a and conical surface 52a seals for taper, thus makes to seal between the outside of air and inner bag 14.

Guide ring 54 is set to only extend to the sidewall 42 of inner bag 14, and has the length being greater than ring 50 and ring 52, to make top cover 16 and inner bag 14 and cylinder 12 auto-alignment installing inner bag 14.

Preferred jointing material 56 is pressure sensitive adhesives.Preferred pressure-sensitive heat is melted sticker and can be obtained from Henkel (Henkel) company, and product designation is Euromelt808697.Euromelt product is preferably with wide about 0.2 inch, use for thick about 0.1 inch, and the edge of jointing material 56 next-door neighbour's guide ring 54, and stay some gaps that the binding agent when top cover 16 is installed can be expanded in the place near sealing ring 52, the thickness of binding agent will be reduced because apply pressure (suction manually or by being applied to system 10) and increase its width.That is, when top cover 16 is installed, the flange 46 of inner surface and inner bag 14 that binding agent 56 adheres to top cover 16 is simultaneously to provide sealing, and sealing effect is equivalent to the outer side seal in the inner side of inner bag 14 and inner bag 14.Be understandable that, sealing effectively will completely cut off fluid, comprise the compressed air come from passage.Thus, refer again to Fig. 6, be understandable that, the upper plane 36a of flange leaves distance on the top of parts 28, this distance is consistent with the thickness of inner bag 14 upper flange 46 and the thickness of binding agent 56, and flange 36 like this can fasten top cover 16 and binding agent 56 is slightly extruded.

Port 58a is vacuum ports, and it is connected to fixed mount 18 by pipeline 60, for negative pressure fluid communication.Be arranged in the upper filter 62 be communicated with port 58a fluid inside top cover 16 and provide shutoff device to prevent the content adverse current being collected in inner bag 14 by port 58a.That is, when filter 62 provides air filtration, the major function that it has is exactly prevent the on-gaseous content in inner bag to be absorbed in vacuum line.Filter 62 is preferably solid, and it is mixed with carboxymethyl cellulose (CMC) powder mutually by polyethylene powder, the shape becoming to need with high temperature and high pressure clinkering, as United States Patent (USP) the 6th, described by 780, No. 309, be incorporated in this as a whole.When liquid inflow filter 62, such as after pipeline 14 is filled, the viscosity that carboxymethyl cellulose powder improves liquid no longer through the filter opening of filter, therefore can be closed vacuum source and is communicated with the fluid between inner side of liner, prevent liquid from passing filter 62 to it.But be understandable that, can use other shutoff devices, such as one is plastered shutoff device.

Port 58b and 58c can be connected to a pipeline connected in patient body, for carrying the material collected in patient body.Port 58d is a dump port, if needed, for flowing blank pipe road 14.There is provided block 64a-64d to difference corresponding ports 58a-58d.

Fixed mount 18 has molded plastic structure, comprises pedestal 70, and main body 72 extends out and embedded valve 74 from pedestal 70, and receptor 76.Pedestal 70 can be fixed on the wall or on other supporting surfaces.The effect of valve 74, as switch, is used for applying vacuum equipment in system, and can regulates the air capacity through system 10.The rotary valve having rotatable grip 78 by one, to equip valve 74, rotates this handle and can cut out path selectively to regulate flow through valve 74.The access end of valve 74 is configured to be communicated with negative pressure source V fluid.The opposite port end of valve 74 is configured to carry air vent 80 and 82.Air vent 80 is configured to be communicated with pipeline 60 fluid.Receptor 76 is configured to the vacuum port 26 of receiving barrel 12 and accommodating cylinder, makes it be communicated with air vent 80 fluid of valve 74.Air vent 82 is configured to make it to be communicated with negative pressure source V fluid, is usually connected to the external vacuum actuator of system 10 upstream, as parts of negative pressure source V.

For assembly system 10, fixed mount 18, by pedestal 70, uses fastener or similar articles to be fixed in wall or other supports.Cylinder 12 is received by receptor 76, and the port 26 of cylinder 12 like this is connected to port 82.Now, handle 78 position is fixed, so that valve is cut off from negative pressure source V.Being positioned in inner bag 14 by the guide ring 54 on top cover 16, and inner bag 14 and top cover 16 are pressed when the flange 46 of inner bag 14 and the joint of binding agent 56 apply pressure, inner bag 14 is just connected to top cover 16 simultaneously.On this point, when using inner bag 14 ', can be observed lug 46a and assisting in ensuring that inner bag 14 ' and top cover 16 are coaxial further.Get back to Fig. 6, can see that flange 46 does not extend into contact ring 52 adjacent surface.With regard to this point, the preferred size of lug 46a is for being extensible to ring 52.The excess binder 56 that lug 46a also contributes to for flowing out outside inner bag 14 provides space.If inner bag 14 ' uses, be appreciated that guide ring 54 can omit from top cover 16.But the top cover 16 preferably with guide ring 54 uses together with inner bag 14, because ring 54 has advantage in the inside creep suppressing binding agent 56.

The inner bag 14 with top cover 16 at this point assembled is placed in cylinder 12, and the sealing ring 52 of top cover 16 like this is in periphery holes 32, and the chamfered edge shape edge, inside 38 of top cover contacts with the conical surface 52a of sealing ring 52.Next, the snap ring 50 on pressing flange 36, until be in buckling state.Pipeline 60 invests port 58a, and port 58b invests on patient's pipeline, port 58c or with block 64c cover or invest patient's pipeline, block 64d be arranged on port 58d.Finally, rotating handles 78 according to need, so provides required negative pressure by valve 74.

Thus, in the process using system 10, be understandable that, negative pressure is applied to inner side and the outside of inner bag 14.The material that negative pressure inside supply inner bag 14 is collected by port 58b (optional port 58c) traction.Negative pressure outside the inner bag 14 supplying in cylinder 12 by port 26 maintains inner bag 14 and is not destroyed.Along with the long-pending full material absorbed of inner bag 14, the weight of inclusions is tending towards inner bag 14 is expanded, and impels the bottom 40 of inner bag 14 to press the bottom 20 of cylinder 12, and the sidewall 42 of inner bag 14 expands to the sidewall 22 of cylinder 12.Finally, once inner bag 14 is long-pending full, inner liquid contacts with filter 62, and latter reaction is the negative pressure increasing and reduce to put in inner bag, stops immediately applying negative pressure in inner bag.Now, the pressure put on outside inner bag 14 is greater than the pressure of inner side, makes inner bag 14 expand further.Along with the generation of this expansion, the power same purpose produced because expanding is on flange 46.But vertical part 28 plays the effect of pivot flange 46.Therefore, the length of parts 28 should select the potential drawn expanded degree being greater than inner bag 14, maintains flange 46 on parts 28.Thus, it further is understood that, binding agent 56 and top cover 16 are play to maintain flange 46 and be positioned at effect on parts 28 equally.

When inner bag 14 amasss full time, need rotating handles 78 to carry out valve-off 74, remaining block covers the port of uncovered separately simultaneously.When occurring all pressing, the small diastole of inner bag 14 is normal, and this is removed due to the negative pressure put on outside it, the non-slight expansion of inner bag 14.Do traditional inner bag/roof system if change in the case, it can be very common for now leakage occurring.But, observable, by the present invention, system be improved and largely avoid reveal and excessive.Same, if a traditional fully loaded inner bag/top cover is overturned, will occur excessive.By the present invention, when overturning generation, the system that can be observed is not revealed or excessive, or reduces greatly and to reveal or excessive.

System 10 is also configured to benefit as storing and transport saving space.Such as, inner bag 14 and 14 ' is easy to stacking, and top cover 16 is relatively put down and deposited in bag by adjustment simultaneously.Inner bag 14 and 14 ' and top cover 16 use also easily and convenient.Such as, inner bag is easy to launch, and the calibration characteristics, of top cover is convenient to being connected with inner bag by top cover fast and safely.

About Fig. 8, show an embodiment, a kind of medical suction system 100, has rigid cartridge 102, semi-rigid inner bag 104, and top cover 106.System 100 is mutually compatible according to aforementioned manner with fixed mount 18, and except the difference herein indicated, substantive similar to system 10.

Cylinder 102 is essentially cup-shaped, and has bottom surface and a circle extend into open top end sidewall 122 from bottom surface.The top single peripheral vertical part 124 that comprises a top based on sidewall 122 to determine of cylinder 102.For convenience of the fastening relation between cylinder 102 and top cover 106, vertical part 124 has end, and it is shaped as has flange 126, is configured to fasten with top cover 106.In addition, vertical part 124 also has inner chamfered edge shape edge 128, is configured to the part engaging top cover 106, to provide sealing between side and air outside the tank, hereafter can describes in detail this.The top 128a at edge 128 preferably has inclination a little thus provides convenience for the installation of top cover 16.

Inner bag 104 is substantive identical with inner bag 14, except the sidewall 142 of inner bag 104 is higher than the sidewall 42 of inner bag 14, so it extends higher than the distance of general 0.20 foot of flange 126, and comprises a flange 146 but not flange 46.Flange 146 outwards extends from the upper open end of inner bag 104 according to the mode of flange 46, except flange 146 has a transverse section consistent with inversion V or V-type.

Top cover 106 has the peripheral snap ring 150 defining neighboring, from the peripheral seal ring 152 that top cover 106 inner surface extends, and the peripheral guide ring 154 in sealing ring 52 inside.The position of ring 150 below the top cover near sealing ring 152 to downward-extension one segment distance to extend beyond the distance of cylinder 102 upper flange 126 consistent with the flange 146 on inner bag 104.Jointing material 156 is provided as the peripheral ring between sealing ring 152 and guide ring 154.Jointing material 156 is preferably identical with binding agent 56.Top cover 106 also has port, than port 58a-58d as the aforementioned.

The inner surface 150a of snap ring 150 is shaped as the shape of engageable flange 146.Inner sealing ring 152 is tapers, to provide external conical surface 152a, be configured to engage inner chamfered edge shape edge 128a by the square, and provide sealing along edge 128a inner surface and surperficial 152a, to seal between outside air and inner bag 104.Retainer 160, such as peripheral ledge or multiple projection or weldering thorn, be installed in the inner surface of sealing ring 152 so that when top cover 106 is mounted the free margins 146a of pivot flange 146.Guide ring 154 is set to only extend to the sidewall 142 of inner bag 104, and matches with the higher height on the sidewall 142 of inner bag 104, so that when inner bag is installed, and top cover 106 and inner bag 104 and cylinder 102 auto-alignment.

The installation of system 100 is effective for preventing the flange 146 of inner bag 104 from binding agent 156 slippage, such as after long-time use.Such as, retainer 160 and the V-arrangement shape of flange 146 match incompatible be convenient to fasten install, additionally provide a surface, this surface is meshed with flange 146 under vacuum when top cover 106 departs from from binding agent 156 simultaneously.That is, retainer 160 effect upwards changes V-type flange, causes effective diameter to increase, make flange 146 more be difficult to through retainer 160, therefore makes top cover be separated more difficult from binding agent 156.

Description of the preferred embodiment of the present invention is to enumerate and describing above.It is also not intended to limit all situations or limits the invention to disclosed precise forms.According to above-mentioned teaching, various obvious modifications and variations are all possible.Select and describe embodiment to provide the best illustration of principle of the present invention and practical application thereof, thus make those of ordinary skill in the art implement different embodiments of the invention, and meet the specific various amendments using expection.When the explanation of claims meet with it reasonable, legal and the just scope enjoyed is consistent time, all above-mentioned modifications and variations are all in the scope of the present invention limited by claims.

Claims (10)

1. a suction system, it comprises: cylinder; Can be accommodated in the inner bag in described cylinder, described inner bag has outward extending flange; And when described inner bag is incorporated in described cylinder, orientable top cover on described inner bag and described cylinder, described top cover has peripheral snap ring, described peripheral snap ring has one or more for engaging a part for described cylinder with manner, extend from described top cover inner surface with described snap ring isolated peripheral seal member inherently, described peripheral seal member for locating and engaging and support the upstanding portion of described cylinder, thus air and outside being accommodated in described cylinder described inner bag between sealing is provided; And be bonded in the peripheral jointing material of the described top cover inner surface near described peripheral seal member, described peripheral jointing material can be located and be bonded the described flange of described inner bag when being arranged on described inner bag by described top cover, thus outside described inner side of liner and described inner bag between sealing is provided.

2. the system as claimed in claim 1, is characterized in that: described inner bag has multiplely to be made it to align with described inner bag from the outward extending lug of described flange for adjusting described top cover.

3. the system as claimed in claim 1, it is characterized in that: described cylinder has top end opening, described top end opening has the first peripheral vertical part near position, described top, and be positioned at the second peripheral vertical part at described first peripheral vertical part radial outside place near described top, and described second peripheral vertical part is higher than the height of described first peripheral vertical part.

4. system as claimed in claim 3, it is characterized in that: described inner bag has top end opening, described top end opening has outward extending peripheral flange, and when installing described top cover, described flange is supported on the described first peripheral vertical part of described cylinder.

5. system as claimed in claim 4, is characterized in that: after described top cover is mounted, described peripheral snap ring closely engages described second peripheral vertical part.

6. the system as claimed in claim 1, is characterized in that: described top cover also has the guide ring extended internally on the sidewall of described inner bag, aligns to make described top cover and described inner bag.

7. the system as claimed in claim 1, is characterized in that: also comprise negative pressure source; Extend through the first port of described top cover, this first port is used for the inside of accommodating described inner bag and makes itself and described negative pressure fluid communication; Extend through the second port of described top cover, when negative pressure is applied to the inside of described inner bag, this second port is for importing the body fluid from patient.

8. the system as claimed in claim 1, it is characterized in that: described inner bag also has V-arrangement flange, the inner surface of the described peripheral seal member on described top cover also has retainer, when installing described top cover, described retainer is used to engage described V-arrangement flange thus prevents being separated of described top cover and described binding agent.

9. the system as claimed in claim 1, is characterized in that: described binding agent is contact adhesive.

10. a suction system, it comprises: cylinder; Can be accommodated in the inner bag in described cylinder, described inner bag has outward extending flange; And when described inner bag is incorporated in described cylinder, the orientable top cover on described inner bag and described cylinder, described top cover has peripheral snap ring, and described peripheral snap ring has one or more for engaging a part for described cylinder with manner; Extend from described top cover inner surface with described snap ring isolated peripheral seal member inherently, described peripheral seal member for locating and engaging and support the upstanding portion of described cylinder, thus air and outside being accommodated in described cylinder described inner bag between sealing is provided; The guide ring that the sidewall of described inner bag extends internally; And for locate, be bonded in the peripheral jointing material of described top cover inner surface near described peripheral seal member, when described top cover is installed on described inner bag, for by described inner bag and described flange bonding, thus outside described inner side of liner and described inner bag between sealing is provided.