DE2359338A1 - CLOSED SUCTION DEVICE FOR WOUNDS - Google Patents

Description

DR.-ING. G. RIEBLING PATENT ADVOCATE

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^Your message from 899 Lindau (Bodensee)

Rennerle 10 ■ P.O. Box 3160

Nov. 26, 1973

Supervisor: 1. ROYCE CLAY LEWIS Jr., 5233 West 19th Street, Lubbock, Texas 794o7 2. KELSEY MARTIN, 5233 West I9th Street, Lubbock, Texas 794o7 / Ü.S.A.

Closed suction arrangement for wounds

The present invention relates to a device that has a closed Arrangement for moving fluids in postoperative procedures and other occasions where cleanliness, sterility and the like The absence of moving parts is desirable. The device contains a pump device that has a plate therein Assemblies, which receives a compressible hose laid in a loop, the hose with through, are in flow connection, which are formed in the plate assembly in such a way that the plate assembly and the hose can be stored after use. The hose, laid in a loop, is between a distant

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Baren pressure shoe and a number of rollers arranged so that the rollers, when they rotate, attack one edge of the tube one after the other and compress it, and thereby force contained fluid to move through it.

The pressure shoe provides a curved surface against which the rollers can compress the looped ones Press hose; provides a mounting arrangement for the Plate member appropriately attached relative to the rest of the device to keep; and also provides a housing within which the tubing and rollers are protected.

After a patient underwent surgery it is advantageous to subject the wound to continuous suction in order to inevitably drain it to provide a manner as generally described in US Pat. 3 115 138 is illustrated. Known surgical Emptying devices are usually limited in shape to a compressible pump container made of a resilient, elastic polymerization product is made having corrugated side walls which inside the same form a suction chamber. Opposite walls of the chamber are pushed apart to a pressure difference of about

2
0.0352 kgf / cm (0.5 psig) and the atmosphere. A

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Plastic tube is inserted into the wound itself and extends outward from the patient's body in fluid communication with the suction chamber. From time to time, the accumulation ^must: be drained of fluids from the chamber, a thereby extremely hazardous condition bring about, in which the fluid could be pushed back through the hose · in the wound, the nurse or caregiver should the suction chamber inadvertently to a Raise height above the wound exceeding 0.61m (2 feet). Furthermore, it is possible for the patient to roll onto the suction chamber in order to thereby compress the container by a sufficient amount and to generate a hydrostatic pressure head so that the above-mentioned backflow occurs.

Moreover, the interior of the wound constantly in direct contact with fluids which have been previously pumped out thereof, and sometimes the fluids are sufficiently aged, thereby generating a deleterious physiological effect, they should zurückfHessen into the cavity of the wound.

Others have proposed a closed loop type pumping device as exemplified by US Pat. No. 2,483. A device of this type has the advantage of having a check valve within the flow passage

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effective to provide which connects the wound to the disposable vessel containing the accumulated fluids. But in this way The pumps used in the arrangement must because of the associated Cost of the various pump components to be carefully sterilized and reused. Hence the reuse of Parts of the pump device undesirable for obvious reasons.

It will be desirable to provide a closed arrangement for inevitably draining a wound which enjoys all of the above features while avoiding the practice of the hazards mentioned above. It would It may be desirable that such an arrangement contain a sterile, packaged assembly of all components which are in fluid communication should be brought with the wound and that the packaged, sterile device is cheap enough to have it after everyone Use to be able to retire.

An evacuator or evacuation assembly for removing fluids from a closed wound includes an undercarriage, comprising spaced apart rollers or a pressure exerting arrangement supported thereon and a Flow plate assembly removably mounted around the support member, the plate assembly being a loop of a compressible Hose line takes up so that the hose line is on a part of the described by the rotating rollers ümfanges is arranged to the outside. A removable pressure shoe holds the flow plate assembly

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releasable in an appropriate position relative to the rest of the device and sees an arrangement for applying pressure against the Hose line in front, thereby enabling the rollers to attack one edge of the hose line one after the other and compressing these, thereby moving fluid contained therein constantly therethrough, with at least one roller constantly attacks an edge length of the hose line. The pressure shoe also forms a closure arrangement for the chamber inside which the hose line is housed.

The present invention makes an inexpensive, sterile flow sheet It can be assembled and stored after each use can be. The plate assembly contains as an additional Embodiment a built-in pressure sensing arrangement, so that a predetermined, minimum pressure on the Wound is caused and that a warning is given, should the emptying device become inoperative.

Accordingly, it is a primary object of this invention to be a closed one Provide suction assembly for wounds, the associated ^ luidbef ordernd has disposable components.

Another object of the invention is to provide a pumping device having a disposable flow plate assembly, which is held in place with a pressure shoe, the pressure shoe providing a curved wall surface against which the Loop of the compressible hose assembly is pressed.

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■ ORIGINAL INSPEOTH)

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Another object of this invention is to provide a disposable flow plate assembly that does one therewith has unified pressure sensing arrangement which interrupts the flow of current to the pump motor and a warning operated when the pressure drops below a predetermined amount.

Another object of this invention is to provide improvers to be provided on sterile evacuators to remove fluids from a closed wound.

Another object of this invention is to provide improvements to provide pumps for transferring fluids in surgical procedures where a continuous flow of fluid is underneath Maintain constant, reduced pressure and sterile condition must become.

An additional object of this invention is to provide a to provide closed suction arrangement for wounds, which eliminates any possibility of fluids flowing back into the wound turns off.

These and various other objects and advantages of the invention will become apparent to those skilled in the art upon reading the following Description and claims and by reference to the accompanying drawings are easily apparent.

The above objects are achieved in accordance with the present invention achieved by providing a combination of elements,

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ORIGINAL INSPECTED

which are manufactured in a manner essentially as described in the introduction and summary above.

It shows:

1 shows a perspective view of a preferred embodiment a closed suction device for wounds, which according to the present Invention is made;

FIG. 2 is an enlarged plan view of the disclosed in FIG Device;

Figure 3 is a side view of the device disclosed in Figure 2;

Figure 4 is an enlarged plan view of part of the previous one Figures disclosed device, some of which are parts thereof broken away and some of the remaining parts thereof shown in section to illustrate an embodiment of the invention better to illustrate;

FIG. 5 is a sectional view taken along line 5-5 of FIG some additional parts thereof are schematically included therein;

FIG. 6 is an enlarged partial sectional view of that disclosed in FIG Device;

Figure 7 is a sectional view taken along line 7-7 of Figure 11;

8, 11 and 12 different partial sectional views, some illustrate the important features of the invention; Fig. 9 and IO views of the side and underside of the part

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of the device disclosed in the preceding figures;

13 is a side view of the device disclosed in the preceding figures and FIG

FIG. 14 shows an animal embodiment of that disclosed in FIG Part of the device.

In Fig.l of the drawings, a device 15 is disclosed which a closed one made in accordance with the present invention Forms suction arrangement for wounds. The device contains a box-like Main enclosure in the form of a housing 16 within which various components of the device are enclosed are. An underframe 17 of the housing has an upwardly facing front surface on which an upright support member l8 is attached. As best from the illustrated embodiment Referring to Figures 2 and 3, a removable flow sheet assembly 19 is seen on the floor through the undercarriage with the upright support member being received therethrough to thereby place most of the support member over the panels To arrange assembly.

A pressure shoe Zo in the shape of an inverted "U" forms an containment plate as it is the area between the two includes illustrated upright legs 21 and 22, of which the inner peripheral edge parts through the outer peripheral edges the legs 23 are covered. As in the context of Fig.3 9, the reference numeral 123 designates one of the free downwardly projecting connection ends of a pair

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of parallel legs arranged at a distance from one another. Each leg is tangential to the outermost one, extending on the circumference arranged extending surface of the pressure shoe and is therefrom down forward.

Looking at various of the figures of the drawing, it is noted that the pressure shoe further includes a circumferentially extending inwardly directed widening 24 which is limited to about 180 ° of the curve. The inside of the circumferentially extending, inwardly directed surface of the widening terminates at the spaced apart edge portions or lugs 'Attachment 126 attached to ^; will. The specific details of the attachment and attachment arrangement can take several different forms, if desired.

The aforementioned flow plate assembly has a length which is defined by connecting edge parts 27 and 28. The plate is large with an opening or a cutout 29 to freely receive the upright support member 18 therethrough. Inward facing opposing pads or hose holders 3o or 32 are equipped with hose connections 31, and 33, respectively, around opposite ends of a length of deformable looped tubing record, which is in flow connection with it.

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• ./ ORfBiNAL IMSPECTEÖ

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The exact manner in which the hose line ends are attached to the panel is considered a matter of choice or convenience of training. A passage 34 'connects the hose connection 33 to an outlet connection 34. A pressure sensitive bellows 35 is connected by means of a passage 36V with an inlet 36 and the aforementioned hose connection in fluid connection.

As in Fig. 7-12 in connection with some of the remaining figures, As illustrated, a pressurizing arrangement has the form a number of rollers, one of which is shown at 37, which are individually received or mounted on a shaft 38 so as to be rotatable with each of the illustrated rollers being equidistant from a centrally mounted shaft 39 ' is. The plate 4o includes a gear arranged around a peripheral edge portion thereof for engaging with a drive mechanism. gear 41 of an electric motor 42. An opposing plate member is received in a cavity 43, the above-mentioned Shaft 39 'is received in a counterbore 44.

As used herein, the term "roles" is intended to include any To comprise device which successively touch an edge length of a hose arranged in a loop and can squeeze to cause the fluid contained in the hose to move from an inlet to an outlet of the in a Loop laid hose to flow. As used herein, "tubing in a loop" refers to

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a compressible & tubular flow line of any Cross-sectional shape suitable for use in a fluid pump of the current type is suitable.

A downwardly arranged holder 45 forms an approach to grip the upward-facing surface of the undercarriage. An opening 47 accommodates the gear 41 when the Motor is properly screwed onto the motor mounting plate.

The deformable tube 48 laid in a loop has at its opposite end parts a flow connection with the hose connections 31, 33, the above-mentioned Section between the spaced apart Hose line connections is attached.

As shown from the illustration of FIGS the above-mentioned bellows 35 is provided with an air hole 49, which the fluid communication between the chamber 5p and the atmosphere manufactures. The central surface of the case is deformable, so you can press your finger against the housing and give the bellows a movement, the purpose of which is further down the line Disclosure is described in more detail. A large, upper, movable wall surface 51 is at a distance from a smaller, movable wall surface 52 arranged so that when a pressure difference between the environment and the interior of the bellows is effected, the shaft 5 3 axially longitudinally and in engagement with the Switch 54 is moved with the switch in its off

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ORI0JNAL INSPECTED

or invalid position is illustrated.

The central, opposite parts of the spaced apart arranged walls of the bellows are brought together to be diametrical opposing, outwardly opening cylindrical cavities 61, 62, the lower cavity receiving the illustrated shaft therein so that the shaft moves therewith. the Surface 63 of the bellows is free to move while surface 64 is anchored to part of the panel assembly.

The hose line 67 is in fluid communication with the inlet, the remaining end of the edge part of the hose line perforated and housed in the cavity of the wound, so that the flow connection between the interior of the bellows and the Inside the patient's wound is established. Outlet connection 34 is preferably in flow connection with an expandable plastic bag through the hose line illustrated A container other than a plastic bag can be used when deemed desirable.

Now to the details of Figures 6 and 7 in connection with Looking at the remaining figures, the flow sheet assembly is shown received by the subframe, with the cutout telescopically accommodates the upright limb and its accessories therethrough. The spaced apart Legs 21, 22 are each lowered to provide a hollow tree,

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ORIGINAL JNSPECTi ¹ Bo

in which the illustrated, mutually spaced, opposing rotatable plates 55, 57 are received. The plates are connected to one another by means of members 38 and 38. _f wherein the 'shaft 39' is fastened to the axially aligned bearings 58 which are arranged at a distance from one another. A gear 56 forms an outer peripheral surface of the plate 55.-...-

In operation, the flow plate device is used together with the flow hose line and container 66, preferably available in a sterile container or packaging made so that the pack can be opened under sterile conditions and the device in its operating position simply lowering the flow plate assembly in the operating position can be attached to the undercarriage, with the upright Support members are included through the cutout. This assembly step brings the looped one Hose in appropriate relation to the rollers as shown in the illustrated position in Figures 6, 8 and 12. The pressure shoe is then in operative engagement with the upright support member lowered and in the appropriate operating position fastened by means of the above-mentioned fastening arrangement. The spaced apart legs of the support member now take on any load transferred through the pressure shoe, while the downwardly protruding ends of the pressure shoe the Flow plate assembly in a downward direction against

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Pre-tension the underframe. ■

The bag 66 can, if desired, be placed in the container 7p and the free edge end of the hose line 67 can now be placed in the cavity of the wound using techniques known to those skilled in the art.

The free, downwardly protruding edge end part of the hose line 67 is preferably provided with a number of openings arranged at a radial distance from one another and in the Cavity the wound by attaching a needle to the opposite end of the same attached to the plastic tube to enable subcutaneous exposure of the wound cavity through healthy skin at a location remote from the incision to be drawn. The needle is removed from the tubing and the end of the tubing is in fluid communication to the inlet 36 while the wound is being sutured. This tool leaves the perforated tube inside of the cavity of the wound, thereby placing the interior of the wound in fluid communication with the first passage of the flow sheet to bring, but still completely separate the wound from its surroundings.

The engine of Figure 5 is then illustrated by closing the Switch activated, whereupon the illustrated warning device will sound until a predetermined pressure in the passage 36 'is developed. The rheostat can

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can be set to regulate the speed with which the rollers describe a circle, the outer one Has circumference 137.

As can be seen from FIG. 9, the inner widening 24 of the pressure shoe has a scope described by a dashed line 124. The space or distance between lines 124 and 137, the distance required to cause the tubing 48 to be looped is one assume a compressed form, as best illustrated in Figure 12 at 148 and 248. It is essential that sufficient distance 14S between the legs 23 and the circumference 137 is to receive the hose connections attached to the hose 48 laid in a loop. As illustrated in the illustration of FIGS. 11 and 12, at least one roller constantly grips an edge length of the in one Looping the hose and compresses it, thereby continuously passing the fluid contained therein move.

Those familiar with the subject will now recognize that this Device for effective separation of the stored fluid in the

Bag 66 testifies to the direct connection with the wound via the passage in the hose line 67. Should be about it If the bag 66 requires replacement or evacuation, the device can continue to evacuate the wound during the Bag is changed to avoid any possible contamination

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to exclude the inside of the wound.

By making the flow sheet assembly from plastic material the tubing, the bag, the needle, the tubing in a loop and the plate can be robustly designed and yet made low enough in cost that it can be destructively filed after each use of the same.

In the modification of Fig. 6, the plate member is shortened and the inlet 36 and outlet 34 have been positioned relative to each other and lengthwise to the plate.

In the modification shown in FIG. 14, the bellows 135 has a lower surface 152 brought into engagement with a ball 135, the ball being held against the upper surface of the base 17 is. A switch 16o, which has lines 161 leading therefrom, is operated by movement of the ball 153. As long as 136 reduced pressure is effected, the lower wall 152 presses the ball 153 in a downward direction, thereby the To operate switch 16o, which in turn is connected in the circuit illustrated in Figure 5. The bellows are to a flow plate arrangement on the same in Fig. 4 and 5 illustrated Way attached. The motor is operated by connecting the switch to a power source S and then the Press down on the bellows 135 to deform the bellows sufficiently and the ball 153 against the actuator of the

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Press switch 16o. A lighter one, by an index finger applied pressure is on the order of one second completely sufficient »to start the engine. The pump will continue to run until the circuit breaker to the power source is opened, or until an accident results in the loss of the 9> reduced pressure in the formation.

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Claims (12)

Godfather t - A η s ρ r. before 1., Closed, surgical suction assembly that is sterile, inexpensive s. Has fluid-containing parts, which are stored after use are characterized by: an underframe (17), a main moving member (43), an upright support member (18) attached to the base (17), a number of rollers (37) spaced radially arranged by a common axis (39 ') and rotatable about this Are; an arrangement (4o) which rotates the rollers (37) on the upright Support member (18) attached so that the rollers (37) describe a circle (124) when they are rotated about their common axis; one Arrangement (45) by which the main moving member (42) is fixed relative to the underframe (17) to cause the rollers (37), to rotate in a circular path about the described common axis; a flow plate assembly (19), a compressible looped hose (48) through which fluid can pass, the looped hose having an inlet (36) and an outlet (34), an assembly (21,22) ) by means of which the looped tube is supported by the flow plate assembly (19);
a pressure shoe (2o), which has a curved, inner peripheral surface 409825/0774 " ^l8 " has region which is spaced from and parallel to an edge length of the circumferentially extending circular path described by the rollers; an assembly that removably attaches the pressure shoe to the subframe; an arrangement by which the flow sheet assemblies are removably secured in position to the undercarriage which applies an edge length of the compressible hose (48) between the rollers and the pressure shoe so that the Rolls (37) successively one edge length of the compressible The hose (48) against the pressure shoe and compress to cause fluid therein from the inlet to fHess to the outlet of the hose; wherein the pressure shoe (2o) can be removed to allow flow plate assembly (19) to be replaced with a similar flow plate assembly to become. 2. A suction assembly according to claim 1, characterized in that the flow sheet assembly (19) includes an assembly defining first and second flow passages (36 ¹ , 34 ') therein; the first flow passage (36 ¹ ) has an inlet. (36) and an outlet (31), the second flow passage (34 ') having an inlet (33) and an outlet (34);
one end of the looped tube (48), one - 19 - 409825/0 7 7A? F. ■ Flow connection with the outlet of the first flow passage (36 '), the remaining end of the loop laid hose (48) a flow connection with the inlet (33) of the second flow passage (34 '), so that a fluid flow path from the inlet of the first flow passage (36 ') through the first flow passage, through the in a loop laid hose (48) is formed through the second flow passage (34 ') and to the outlet of the second flow passage. 3. Suction arrangement according to claim 2, characterized in that that one of the flow passages (36 ') of the flow plate assembly (19) has an associated chamber (5o) contains, the chamber has deformable, mutually oppositely spaced side walls (51, 52), the area of one side wall is larger than the area of the opposite wall, so that a wall is responsive to moves a pressure reduction made in the chamber; a warning arrangement responsive to movement of the one wall for an inoperative condition of the emptying device to display. 4. suction arrangement according to claim 1, characterized that the flow plate assembly (19) is provided with a cutout (29), the upright support member (18) - 2o 409825/077 /. and the rollers are telescopically received by the cutout, the hose (48) the downwardly protruding ends thereof at a distance from each other and attached to opposite sides of the flow sheet assembly, wherein the cutout is made between the downwardly projecting ends of the hose (48), the pressure shoe is in the form of a has an inverted "U" and has its downwardly projecting ends butted against the flow plate assembly are; the arrangement by which the flow sheet assembly is secured to the subframe, the downwardly protruding ends of the pressure shoe contains 5. Suction arrangement according to claim 1, characterized in that the upright support member has two spaced apart contains mutually arranged legs (21,22), a plate member (55,57) is mounted on each leg, the rollers (37) are stored in the smooth girders; the flow plate assembly (19) has a cutout therein for receiving the im Spaced legs through it; The shoe is in the shape of a "U" shaped body to accommodate the rollers in it to include; the downwardly protruding ends of the shoe rest against the Fliessplattenzusainmenbau (19). 6. Saüganordnung according to claim 1, characterized in that net that the flow plate assembly (19) with - 21 - Λ 09825/0774 - 2359138 openings is provided between the attachment / the ends the compressible tube (48) lying; part of the upright support member (18) through the opening is included; the pressure shoe has downwardly protruding legs (21,22), which adjoined the panel assembly are to the floating assembly (19) removable on the To keep the underframe (17) attached; the shoe is removably attached to the upright support member is that the shoe can be removed from the support member and thereafter the panel assembly with a similar panel assembly can be replaced to thereby provide the aforesaid arrangement by which the flow plate assembly can be detachably attached to the underframe. 7. Suction arrangement for removing fluids from a closed wound, characterized by :. An underframe (17); an upright support (18) that is r attached to the base frame; radially spaced apart pressure-exerting arrangements (21,23), which are arranged at the same distance from a central axis and are mounted on the upright support, an arrangement (42) for rotating the pressure-exerting arrangements about their central axis, so that the pressure-exerting arrangements 36o describe the circumferential path when rotated together; - 22 - 409825/0774 a pressure shoe (2o) the one extending around the circumference inner surface (24) has ^ those with a slightly greater curvature is designed as the scope described by the pressure-exerting arrangements; a flow plate assembly (19) including a looped tube (48) attached thereto? an arrangement by which the flow plate assembly (19) can be removably attached to the base (17), the in a Loop-laid hose (48) is positioned between the pressure-exerting assemblies and the shoe so that the pressure-exerting Arrangements, when they rotate, attack an edge length of the hose one after the other and compress it, to thereby move fluid contained therein therethrough, with at least one of the pressure-exerting assemblies continuously attached to the Hose attacks. 8. suction arrangement according to claim 7, characterized in that that the flow plate assembly (19) includes an arrangement having first and second flow passages therein, the first flow passage (36 ') forms an inlet (36) and having an outlet (31), the second passage (34 ') having a Has an inlet (33) and an outlet (34); one end of the looped hose (48) in fluid communication with the outlet (31) of the first flow passage (36 *) and the remaining end of the looped one - 2.3 - 409825/0774 235Q338 Hose (48) in flow connection with the inlet (33) of the second flow passage (34 '), so that a fluid flow path from the inlet of the first flow passage through the first flow passage, through the looped one Hose, through the second flow passage and to the outlet of the second flow passage is formed. 9. suction arrangement according to claim 7, characterized in that that one of the flow passages of the flow plate assembly (19) contains an associated chamber, the chamber has deformable, mutually oppositely spaced side walls, the surface of a side wall is larger than the area of the opposite wall so that one wall acted responsive to one in the chamber Pressure reduction moved; a warning arrangement is responsive to movement of the one wall to an inoperable Display the status of the emptying device. 10. suction arrangement according to claim 7, characterized that the flow plate assembly (19) is provided with a cutout (29), the protruding support member (18) and the rollers (37) are telescopically received through the cutout, the hose (48), its downwardly projecting ends spaced apart and attached to opposite sides of the flow sheet assembly, the - 24 - 409825/0774 235933a - 3A- Section between the downward protruding ends of the Hose is attached; the shoe is in the shape of an inverted "U" and the shoe has its downwardly protruding ends adjoining the flow plate assembly; the arrangement by which the flow plate assembly aii the underframe is attached, which contains downwardly protruding ends of the pressure shoe. 11. Suction arrangement according to claim 7, characterized that the upright support (18) contains two legs (21, 22) arranged at a distance from one another, a plate member supported on each leg, the rollers (37) supported on the plate members; the flow plate assembly (19) has a cutout (29) therein for receiving the spaced legs therethrough; the shoe in the Is in the form of an inverted "U" shaped body for enclosing the rollers therein; the downward protruding ends of the The shoe against the flow plate assembly (19). 12. Suction arrangement according to claim 7, characterized that the flow plate assembly (19) is provided with opening, the opening between the location of the Ends of the compressible tube (48) lying; a portion of the upright support is received through the opening; the pressure shoe has downwardly protruding legs that are received adjacent to the plate assembly to the The flow plate assembly (19) can be removed from the underframe. 409825/0774 - 25 - to hold firm; the shoe is removably attached to the upright support so that the shoe can be removed from the support and then the plate assembly with a similar plate assembly can be replaced to thereby provide the above arrangement by which the flow plate assembly can be detachably attached to the underframe. 409825/0774 Blank page